diff --git a/jest.config.js b/jest.config.js
index 4f69cbb..ba142b7 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -20,15 +20,19 @@ module.exports = {
   modulePaths: ['<rootDir>'],
   testRegex: '(/packages/([^/]{1,})/__tests__/.*)\\.test.ts$',
   testPathIgnorePatterns: [
-    '(/packages/board/__tests__/.*)\\.test.ts$',
+    // TODO
     '(/packages/core/__tests__/.*)\\.test.ts$',
-    '(/packages/idraw/__tests__/.*)\\.test.ts$',
+    // '(/packages/idraw/__tests__/.*)\\.test.ts$',
     '(/packages/renderer/__tests__/.*)\\.test.ts$',
     '(/packages/types/__tests__/.*)\\.test.ts$'
   ],
   moduleNameMapper: {
-    '@idraw/util': '<rootDir>/packages/util/src/index.ts'
+    '@idraw/types': '<rootDir>/packages/types/src/index.ts',
+    '@idraw/util': '<rootDir>/packages/util/src/index.ts',
+    '@idraw/renderer': '<rootDir>/packages/renderer/src/index.ts',
+    '@idraw/core': '<rootDir>/packages/core/src/index.ts',
+    '^idraw$': '<rootDir>/packages/idraw/src/index.ts'
   },
   // "testRegex": "(/packages/idraw/__tests__/.*)\\.test.ts$",
-  setupFiles: ['jest-canvas-mock']
+  setupFiles: ['jest-canvas-mock', './jest.setup.js']
 };
diff --git a/jest.setup.js b/jest.setup.js
new file mode 100644
index 0000000..f882fab
--- /dev/null
+++ b/jest.setup.js
@@ -0,0 +1,29 @@
+/* eslint-disable no-undef */
+// mock OffscreenCanvas
+global.OffscreenCanvas = class OffscreenCanvas {
+  constructor(width, height) {
+    const canvas = document.createElement('canvas');
+    canvas.width = width;
+    canvas.height = height;
+    this.__canvas = canvas;
+  }
+  getContext(type) {
+    return this.__canvas.getContext(type);
+  }
+  get width() {
+    return this.__canvas.width;
+  }
+  set width(value) {
+    this.__canvas.width = value;
+  }
+  get height() {
+    return this.__canvas.height;
+  }
+  set height(value) {
+    this.__canvas.height = value;
+  }
+
+  get canvas() {
+    return this.__canvas;
+  }
+};
diff --git a/package.json b/package.json
index 9fcd592..d95775b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "private": false,
-  "version": "0.4.0-beta.40",
+  "version": "0.4.0-beta.41",
   "workspaces": [
     "packages/*"
   ],
diff --git a/packages/core/src/board/index.ts b/packages/core/src/board/index.ts
index b4628b1..ed8fec5 100644
--- a/packages/core/src/board/index.ts
+++ b/packages/core/src/board/index.ts
@@ -13,8 +13,7 @@ import type {
   ViewSizeInfo,
   PointSize,
   BoardExtendEventMap,
-  UtilEventEmitter,
-  ModifyOptions
+  UtilEventEmitter
 } from '@idraw/types';
 import { BoardWatcher } from './watcher';
 import { Sharer } from './sharer';
@@ -30,8 +29,8 @@ interface BoardMiddlewareMapItem {
 
 export class Board<T extends BoardExtendEventMap = BoardExtendEventMap> {
   #opts: BoardOptions;
-  #middlewareMap: WeakMap<BoardMiddleware, BoardMiddlewareMapItem> = new WeakMap();
-  #middlewares: BoardMiddleware[] = [];
+  #middlewareMap: Map<BoardMiddleware, BoardMiddlewareMapItem> = new Map();
+  // #middlewares: BoardMiddleware[] = [];
   #activeMiddlewareObjs: BoardMiddlewareObject[] = [];
   #watcher: BoardWatcher;
   #renderer: Renderer;
@@ -291,13 +290,12 @@ export class Board<T extends BoardExtendEventMap = BoardExtendEventMap> {
 
   #resetActiveMiddlewareObjs() {
     const activeMiddlewareObjs: BoardMiddlewareObject[] = [];
-    const middlewareMap = this.#middlewareMap;
-    this.#middlewares.forEach((middleware: BoardMiddleware) => {
-      const item = middlewareMap.get(middleware);
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
+    for (const [_, item] of this.#middlewareMap) {
       if (item?.status === 'enable' && item?.middlewareObject) {
         activeMiddlewareObjs.push(item.middlewareObject);
       }
-    });
+    }
     this.#activeMiddlewareObjs = activeMiddlewareObjs;
   }
 
@@ -313,13 +311,7 @@ export class Board<T extends BoardExtendEventMap = BoardExtendEventMap> {
     return this.#renderer;
   }
 
-  setData(
-    data: Data,
-    opts?: {
-      modifiedOptions?: ModifyOptions; // TODO
-    }
-  ): { viewSizeInfo: ViewSizeInfo } {
-    const { modifiedOptions } = opts || {};
+  setData(data: Data): { viewSizeInfo: ViewSizeInfo } {
     const sharer = this.#sharer;
     this.#sharer.setActiveStorage('data', data);
     const viewSizeInfo = sharer.getActiveViewSizeInfo();
@@ -330,17 +322,11 @@ export class Board<T extends BoardExtendEventMap = BoardExtendEventMap> {
       viewHeight: viewSizeInfo.height,
       extend: true
     });
-    if (modifiedOptions) {
-      this.#viewer.resetVirtualFlatItemMap(data, {
-        viewSizeInfo,
-        viewScaleInfo
-      });
-    } else {
-      this.#viewer.resetVirtualFlatItemMap(data, {
-        viewSizeInfo,
-        viewScaleInfo
-      });
-    }
+
+    this.#viewer.resetVirtualFlatItemMap(data, {
+      viewSizeInfo,
+      viewScaleInfo
+    });
 
     this.#viewer.drawFrame();
     const newViewSizeInfo = {
@@ -360,14 +346,14 @@ export class Board<T extends BoardExtendEventMap = BoardExtendEventMap> {
   use<C extends any = any>(middleware: BoardMiddleware<any, any, any>, config?: Partial<C>) {
     if (this.#middlewareMap.has(middleware)) {
       const item = this.#middlewareMap.get(middleware);
-      if (item) {
-        item.middlewareObject.use?.();
+      if (item && item.status !== 'enable') {
         item.status = 'enable';
-        this.#middlewareMap.set(middleware, item);
+        item.middlewareObject.use?.();
         this.#resetActiveMiddlewareObjs();
-        return;
       }
+      return;
     }
+
     const { boardContent, container } = this.#opts;
     const sharer = this.#sharer;
     const viewer = this.#viewer;
@@ -379,8 +365,6 @@ export class Board<T extends BoardExtendEventMap = BoardExtendEventMap> {
       config
     );
     obj.use?.();
-    this.#middlewares.push(middleware);
-    this.#activeMiddlewareObjs.push(obj);
 
     this.#middlewareMap.set(middleware, {
       status: 'enable',
@@ -391,11 +375,13 @@ export class Board<T extends BoardExtendEventMap = BoardExtendEventMap> {
   }
 
   disuse(middleware: BoardMiddleware<any, any>) {
-    const item = this.#middlewareMap.get(middleware);
-    if (item) {
-      item.middlewareObject.disuse?.();
-      item.status = 'disable';
-      this.#middlewareMap.set(middleware, item);
+    if (this.#middlewareMap.has(middleware)) {
+      const item = this.#middlewareMap.get(middleware);
+      if (item) {
+        item.middlewareObject.disuse?.();
+        item.status = 'disable';
+      }
+      this.#middlewareMap.delete(middleware);
       this.#resetActiveMiddlewareObjs();
     }
   }
diff --git a/packages/core/src/index.ts b/packages/core/src/index.ts
index a6a82c2..dcafe41 100644
--- a/packages/core/src/index.ts
+++ b/packages/core/src/index.ts
@@ -2,16 +2,41 @@ import type {
   Data,
   PointSize,
   CoreOptions,
-  BoardMiddleware,
+  Middleware,
   ViewSizeInfo,
   CoreEventMap,
   ViewScaleInfo,
   LoadItemMap,
-  ModifyOptions
+  ElementType,
+  RecursivePartial,
+  Element,
+  ModifyRecord,
+  ElementPosition,
+  DataLayout,
+  FlattenLayout,
+  DataGlobal
 } from '@idraw/types';
+import {
+  deepClone,
+  createElement,
+  getElementPositionFromList,
+  toFlattenElement,
+  deleteElementInList,
+  findElementFromListByPosition,
+  updateElementInListByPosition,
+  insertElementToListByPosition,
+  moveElementPosition,
+  toFlattenLayout,
+  toFlattenGlobal,
+  get,
+  mergeLayout,
+  mergeGlobal
+} from '@idraw/util';
 import { Board, Sharer, Calculator } from './board';
 import { createBoardContent, validateElements } from '@idraw/util';
 import { Cursor } from './lib/cursor';
+import { getModifyElementRecord } from './record';
+
 export { coreEventKeys } from './config';
 export type { CoreEventKeys } from './config';
 
@@ -77,26 +102,21 @@ export class Core<E extends CoreEventMap = CoreEventMap> {
     container.style.position = 'relative';
   }
 
-  use<C extends any = any>(middleware: BoardMiddleware<any, any, any>, config?: C) {
+  use<C extends any = any>(middleware: Middleware<any, any, any>, config?: C) {
     this.#board.use<C>(middleware, config);
   }
 
-  disuse(middleware: BoardMiddleware<any, any, any>) {
+  disuse(middleware: Middleware<any, any, any>) {
     this.#board.disuse(middleware);
   }
 
-  resetMiddlewareConfig<C extends any = any>(middleware: BoardMiddleware<any, any, any>, config?: Partial<C>) {
+  resetMiddlewareConfig<C extends any = any>(middleware: Middleware<any, any, any>, config?: Partial<C>) {
     this.#board.resetMiddlewareConfig(middleware, config);
   }
 
-  setData(
-    data: Data,
-    opts?: {
-      modifiedOptions?: ModifyOptions;
-    }
-  ) {
+  setData(data: Data) {
     validateElements(data?.elements || []);
-    this.#board.setData(data, opts);
+    this.#board.setData(data);
   }
 
   getData(): Data | null {
@@ -168,4 +188,265 @@ export class Core<E extends CoreEventMap = CoreEventMap> {
   offBoardWatcherEvents() {
     this.#board.offWatcherEvents();
   }
+
+  createElement<T extends ElementType = ElementType>(
+    type: T,
+    element: RecursivePartial<Element<T>>,
+    opts?: {
+      viewCenter?: boolean;
+    }
+  ): Element<T> {
+    const { viewScaleInfo, viewSizeInfo } = this.getViewInfo();
+    return createElement<T>(
+      type,
+      element || {},
+      opts?.viewCenter === true
+        ? {
+            viewScaleInfo,
+            viewSizeInfo
+          }
+        : undefined
+    );
+  }
+
+  updateElement(element: Element): ModifyRecord<'updateElement'> | null {
+    const data: Data = this.getData() || { elements: [] };
+    const uuid = element.uuid;
+    const position = getElementPositionFromList(uuid, data.elements);
+    const beforeElem = findElementFromListByPosition(position, data.elements);
+    if (!beforeElem) {
+      return null;
+    }
+    const before = toFlattenElement(beforeElem);
+    const updatedElement = updateElementInListByPosition(position, element, data.elements, { strict: true }) as Element;
+    const after = toFlattenElement(updatedElement);
+    this.setData(data);
+    this.refresh();
+
+    const modifyRecord: ModifyRecord<'updateElement'> = {
+      type: 'updateElement',
+      time: Date.now(),
+      content: { method: 'updateElement', uuid, before, after }
+    };
+    return modifyRecord;
+  }
+
+  modifyElement(
+    element: RecursivePartial<Omit<Element, 'uuid'>> & Pick<Element, 'uuid'>
+  ): ModifyRecord<'modifyElement'> | null {
+    const { uuid, ...restElement } = element;
+    const data: Data = this.getData() || { elements: [] };
+    const position = getElementPositionFromList(uuid, data.elements);
+    const beforeElem = findElementFromListByPosition(position, data.elements);
+    if (!beforeElem) {
+      return null;
+    }
+    const modifyRecord: ModifyRecord<'modifyElement'> = getModifyElementRecord({
+      modifiedElement: element,
+      beforeElement: beforeElem
+    });
+    updateElementInListByPosition(position, restElement, data.elements) as Element;
+    this.setData(data);
+    this.refresh();
+    return modifyRecord;
+  }
+
+  modifyElements(
+    elements: Array<RecursivePartial<Omit<Element, 'uuid'>> & Pick<Element, 'uuid'>>
+  ): ModifyRecord<'modifyElements'> | null {
+    const data: Data = this.getData() || { elements: [] };
+    let modifyRecord: ModifyRecord<'modifyElements'> | null = null;
+    const before: (FlattenLayout & { uuid: string })[] = [];
+    const after: (FlattenLayout & { uuid: string })[] = [];
+    elements.forEach((element) => {
+      const { uuid, ...restElement } = element;
+      const position = getElementPositionFromList(uuid, data.elements);
+      const beforeElem = findElementFromListByPosition(position, data.elements);
+      if (!beforeElem) {
+        return null;
+      }
+      const tempRecord = getModifyElementRecord({
+        modifiedElement: element,
+        beforeElement: beforeElem
+      });
+      if (tempRecord.content) {
+        before.push({
+          ...tempRecord.content.before,
+          uuid
+        });
+        after.push({
+          ...tempRecord.content.after,
+          uuid
+        });
+      }
+      updateElementInListByPosition(position, restElement, data.elements) as Element;
+    });
+
+    modifyRecord = {
+      type: 'modifyElements',
+      time: Date.now(),
+      content: {
+        method: 'modifyElements',
+        before,
+        after
+      }
+    };
+
+    this.setData(data);
+    this.refresh();
+    return modifyRecord;
+  }
+
+  addElement(
+    element: Element,
+    opts?: {
+      position: ElementPosition;
+    }
+  ): ModifyRecord<'addElement'> {
+    const data: Data = this.getData() || { elements: [] };
+
+    if (!opts || !opts?.position?.length) {
+      data.elements.push(element);
+    } else if (opts?.position) {
+      const position = [...(opts?.position || [])];
+      insertElementToListByPosition(element, position, data.elements);
+    }
+    const position: ElementPosition = getElementPositionFromList(element.uuid, data.elements);
+    const modifyRecord: ModifyRecord<'addElement'> = {
+      type: 'addElement',
+      time: Date.now(),
+      content: { method: 'addElement', uuid: element.uuid, position, element: deepClone(element) }
+    };
+    this.setData(data);
+    this.refresh();
+    return modifyRecord;
+  }
+
+  deleteElement(uuid: string): ModifyRecord<'deleteElement'> {
+    const data: Data = this.getData() || { elements: [] };
+    const position = getElementPositionFromList(uuid, data.elements);
+    const element = findElementFromListByPosition(position, data.elements);
+    const modifyRecord: ModifyRecord<'deleteElement'> = {
+      type: 'deleteElement',
+      time: Date.now(),
+      content: { method: 'deleteElement', uuid, position, element: element ? deepClone(element) : null }
+    };
+    deleteElementInList(uuid, data.elements);
+    this.setData(data);
+    this.refresh();
+    return modifyRecord;
+  }
+
+  moveElement(uuid: string, to: ElementPosition): ModifyRecord<'moveElement'> {
+    const data: Data = this.getData() || { elements: [] };
+    const from = getElementPositionFromList(uuid, data.elements);
+
+    const modifyRecord: ModifyRecord<'moveElement'> = {
+      type: 'moveElement',
+      time: Date.now(),
+      content: { method: 'moveElement', uuid, from: [...from], to: [...to] }
+    };
+    const { elements: list } = moveElementPosition(data.elements, { from, to });
+    data.elements = list;
+    this.setData(data);
+    this.refresh();
+    return modifyRecord;
+  }
+
+  modifyLayout(layout: RecursivePartial<DataLayout> | null): ModifyRecord<'modifyLayout'> {
+    const data: Data = this.getData() || { elements: [] };
+    const modifyRecord: ModifyRecord<'modifyLayout'> = {
+      type: 'modifyLayout',
+      time: Date.now(),
+      content: {
+        method: 'modifyLayout',
+        before: null,
+        after: null
+      }
+    };
+
+    if (layout === null) {
+      if (data.layout) {
+        modifyRecord.content.before = toFlattenLayout(data.layout);
+        delete data['layout'];
+        this.setData(data);
+        this.refresh();
+        return modifyRecord;
+      } else {
+        return modifyRecord;
+      }
+    }
+
+    const beforeLayout = data.layout;
+    let before: FlattenLayout = {};
+    const after: FlattenLayout = toFlattenLayout(layout);
+
+    if (data.layout) {
+      Object.keys(after).forEach((key: string) => {
+        let val = get(beforeLayout, key);
+        if (val === undefined && /(borderRadius|borderWidth)\[[0-9]{1,}\]$/.test(key)) {
+          key = key.replace(/\[[0-9]{1,}\]$/, '');
+          val = get(beforeLayout, key);
+        }
+        before[key] = val;
+      });
+      before = toFlattenLayout(before);
+      modifyRecord.content.before = before;
+    } else {
+      data.layout = {} as any;
+    }
+
+    modifyRecord.content.after = after;
+    mergeLayout(data.layout as DataLayout, layout) as DataLayout;
+
+    this.setData(data);
+    this.refresh();
+    return modifyRecord;
+  }
+
+  modifyGlobal(global: RecursivePartial<DataGlobal> | null) {
+    const data: Data = this.getData() || { elements: [] };
+    const modifyRecord: ModifyRecord<'modifyGlobal'> = {
+      type: 'modifyGlobal',
+      time: Date.now(),
+      content: {
+        method: 'modifyGlobal',
+        before: null,
+        after: null
+      }
+    };
+
+    if (global === null) {
+      if (data.global) {
+        modifyRecord.content.before = toFlattenGlobal(data.global);
+        delete data['global'];
+        this.setData(data);
+        this.refresh();
+        return modifyRecord;
+      } else {
+        return modifyRecord;
+      }
+    }
+
+    const beforeGlobal = data.global;
+    let before: FlattenLayout = {};
+    const after: FlattenLayout = toFlattenGlobal(global);
+
+    if (data.global) {
+      Object.keys(after).forEach((key: string) => {
+        before[key] = get(beforeGlobal, key);
+      });
+      before = toFlattenGlobal(before);
+      modifyRecord.content.before = before;
+    } else {
+      data.global = {} as any;
+    }
+
+    modifyRecord.content.after = after;
+    mergeGlobal(data.global as DataGlobal, global) as DataGlobal;
+
+    this.setData(data);
+    this.refresh();
+    return modifyRecord;
+  }
 }
diff --git a/packages/core/src/middleware/dragger/index.ts b/packages/core/src/middleware/dragger/index.ts
index 104c233..ca83b7c 100644
--- a/packages/core/src/middleware/dragger/index.ts
+++ b/packages/core/src/middleware/dragger/index.ts
@@ -1,4 +1,4 @@
-import type { BoardMiddleware, CoreEventMap, Point } from '@idraw/types';
+import type { Middleware, CoreEventMap, Point } from '@idraw/types';
 import { coreEventKeys } from '../../config';
 
 const key = 'DRAG';
@@ -8,7 +8,7 @@ type DraggerSharedStorage = {
   [keyPrevPoint]: Point | null;
 };
 
-export const MiddlewareDragger: BoardMiddleware<DraggerSharedStorage, CoreEventMap> = (opts) => {
+export const MiddlewareDragger: Middleware<DraggerSharedStorage, CoreEventMap> = (opts) => {
   const { eventHub, sharer, viewer } = opts;
   let isDragging = false;
 
diff --git a/packages/core/src/middleware/info/draw-info.ts b/packages/core/src/middleware/info/draw-info.ts
index 9fced8b..5542b73 100644
--- a/packages/core/src/middleware/info/draw-info.ts
+++ b/packages/core/src/middleware/info/draw-info.ts
@@ -6,7 +6,15 @@ const fontFamily = 'monospace';
 
 export function drawSizeInfoText(
   ctx: ViewContext2D,
-  opts: { point: PointSize; rotateCenter: PointSize; angle: number; text: string; fontSize: number; lineHeight: number; style: MiddlewareInfoStyle }
+  opts: {
+    point: PointSize;
+    rotateCenter: PointSize;
+    angle: number;
+    text: string;
+    fontSize: number;
+    lineHeight: number;
+    style: MiddlewareInfoStyle;
+  }
 ) {
   const { point, rotateCenter, angle, text, style, fontSize, lineHeight } = opts;
   const { textColor, textBackground } = style;
@@ -39,7 +47,7 @@ export function drawSizeInfoText(
     ctx.lineTo(bgEnd.x, bgEnd.y);
     ctx.lineTo(bgStart.x, bgEnd.y);
     ctx.closePath();
-    ctx.fill();
+    ctx.fill('nonzero');
 
     ctx.fillStyle = textColor;
     ctx.textBaseline = 'top';
@@ -49,7 +57,15 @@ export function drawSizeInfoText(
 
 export function drawPositionInfoText(
   ctx: ViewContext2D,
-  opts: { point: PointSize; rotateCenter: PointSize; angle: number; text: string; fontSize: number; lineHeight: number; style: MiddlewareInfoStyle }
+  opts: {
+    point: PointSize;
+    rotateCenter: PointSize;
+    angle: number;
+    text: string;
+    fontSize: number;
+    lineHeight: number;
+    style: MiddlewareInfoStyle;
+  }
 ) {
   const { point, rotateCenter, angle, text, style, fontSize, lineHeight } = opts;
   const { textBackground, textColor } = style;
@@ -82,7 +98,7 @@ export function drawPositionInfoText(
     ctx.lineTo(bgEnd.x, bgEnd.y);
     ctx.lineTo(bgStart.x, bgEnd.y);
     ctx.closePath();
-    ctx.fill();
+    ctx.fill('nonzero');
 
     ctx.fillStyle = textColor;
     ctx.textBaseline = 'top';
@@ -92,7 +108,15 @@ export function drawPositionInfoText(
 
 export function drawAngleInfoText(
   ctx: ViewContext2D,
-  opts: { point: PointSize; rotateCenter: PointSize; angle: number; text: string; fontSize: number; lineHeight: number; style: MiddlewareInfoStyle }
+  opts: {
+    point: PointSize;
+    rotateCenter: PointSize;
+    angle: number;
+    text: string;
+    fontSize: number;
+    lineHeight: number;
+    style: MiddlewareInfoStyle;
+  }
 ) {
   const { point, rotateCenter, angle, text, style, fontSize, lineHeight } = opts;
   const { textBackground, textColor } = style;
@@ -125,7 +149,7 @@ export function drawAngleInfoText(
     ctx.lineTo(bgEnd.x, bgEnd.y);
     ctx.lineTo(bgStart.x, bgEnd.y);
     ctx.closePath();
-    ctx.fill();
+    ctx.fill('nonzero');
 
     ctx.fillStyle = textColor;
     ctx.textBaseline = 'top';
diff --git a/packages/core/src/middleware/info/index.ts b/packages/core/src/middleware/info/index.ts
index 14ccfc8..34cf9b4 100644
--- a/packages/core/src/middleware/info/index.ts
+++ b/packages/core/src/middleware/info/index.ts
@@ -1,5 +1,13 @@
-import type { BoardMiddleware, ViewRectInfo, Element, MiddlewareInfoConfig, CoreEventMap } from '@idraw/types';
-import { formatNumber, getViewScaleInfoFromSnapshot, getViewSizeInfoFromSnapshot, createUUID, limitAngle, rotatePoint, parseAngleToRadian } from '@idraw/util';
+import type { Middleware, ViewRectInfo, Element, MiddlewareInfoConfig, CoreEventMap } from '@idraw/types';
+import {
+  formatNumber,
+  getViewScaleInfoFromSnapshot,
+  getViewSizeInfoFromSnapshot,
+  createUUID,
+  limitAngle,
+  rotatePoint,
+  parseAngleToRadian
+} from '@idraw/util';
 import { keySelectedElementList, keyActionType, keyGroupQueue } from '../selector';
 import { drawSizeInfoText, drawPositionInfoText, drawAngleInfoText } from './draw-info';
 import type { DeepInfoSharedStorage } from './types';
@@ -10,7 +18,7 @@ export { MIDDLEWARE_INTERNAL_EVENT_SHOW_INFO_ANGLE };
 const infoFontSize = 10;
 const infoLineHeight = 16;
 
-export const MiddlewareInfo: BoardMiddleware<
+export const MiddlewareInfo: Middleware<
   DeepInfoSharedStorage,
   CoreEventMap & {
     [MIDDLEWARE_INTERNAL_EVENT_SHOW_INFO_ANGLE]: { show: boolean };
diff --git a/packages/core/src/middleware/layout-selector/index.ts b/packages/core/src/middleware/layout-selector/index.ts
index 89ee133..2c20639 100644
--- a/packages/core/src/middleware/layout-selector/index.ts
+++ b/packages/core/src/middleware/layout-selector/index.ts
@@ -1,10 +1,21 @@
-import type { BoardMiddleware, ElementSize, Point, MiddlewareLayoutSelectorConfig, CoreEventMap } from '@idraw/types';
+import type {
+  Middleware,
+  ElementSize,
+  Point,
+  MiddlewareLayoutSelectorConfig,
+  CoreEventMap,
+  RecursivePartial,
+  ModifyRecord,
+  DataLayout
+} from '@idraw/types';
 import {
   calcLayoutSizeController,
   isViewPointInVertexes,
   getViewScaleInfoFromSnapshot,
   isViewPointInElementSize,
-  calcViewElementSize
+  calcViewElementSize,
+  getElementSize,
+  toFlattenLayout
 } from '@idraw/util';
 import type { LayoutSelectorSharedStorage, ControlType } from './types';
 import {
@@ -27,7 +38,7 @@ import { coreEventKeys } from '../../config';
 
 export { keyLayoutIsSelected, keyLayoutIsBusyMoving };
 
-export const MiddlewareLayoutSelector: BoardMiddleware<
+export const MiddlewareLayoutSelector: Middleware<
   LayoutSelectorSharedStorage,
   CoreEventMap,
   MiddlewareLayoutSelectorConfig
@@ -43,6 +54,8 @@ export const MiddlewareLayoutSelector: BoardMiddleware<
   let prevIsHoverContent: boolean | null = null;
   let prevIsSelected: boolean | null = null;
 
+  let pointStartLayoutSize: RecursivePartial<ElementSize> | null = null;
+
   const clear = () => {
     prevPoint = null;
     sharer.setSharedStorage(keyLayoutActionType, null);
@@ -241,6 +254,12 @@ export const MiddlewareLayoutSelector: BoardMiddleware<
         }
         sharer.setSharedStorage(keyLayoutIsSelected, false);
       }
+      const data = sharer.getActiveStorage('data');
+      if (data?.layout) {
+        pointStartLayoutSize = getElementSize(data.layout as any);
+      } else {
+        pointStartLayoutSize = null;
+      }
 
       resetController();
       const layoutControlType = resetControlType(e);
@@ -359,11 +378,25 @@ export const MiddlewareLayoutSelector: BoardMiddleware<
       const layoutControlType = sharer.getSharedStorage(keyLayoutControlType);
       const data = sharer.getActiveStorage('data');
       if (data && layoutActionType === 'resize' && layoutControlType) {
+        let modifyRecord: ModifyRecord<'modifyLayout'> | undefined = undefined;
+        if (pointStartLayoutSize) {
+          modifyRecord = {
+            type: 'modifyLayout',
+            time: Date.now(),
+            content: {
+              method: 'modifyLayout',
+              before: toFlattenLayout(pointStartLayoutSize as DataLayout),
+              after: toFlattenLayout(getElementSize(data.layout as any) as DataLayout)
+            }
+          };
+        }
         eventHub.trigger(coreEventKeys.CHANGE, {
           type: 'dragLayout',
-          data
+          data,
+          modifyRecord
         });
       }
+      pointStartLayoutSize = null;
 
       sharer.setSharedStorage(keyLayoutActionType, null);
       sharer.setSharedStorage(keyLayoutControlType, null);
diff --git a/packages/core/src/middleware/layout-selector/util.ts b/packages/core/src/middleware/layout-selector/util.ts
index 8a5ed7d..67ea0c3 100644
--- a/packages/core/src/middleware/layout-selector/util.ts
+++ b/packages/core/src/middleware/layout-selector/util.ts
@@ -1,4 +1,11 @@
-import type { ViewContext2D, LayoutSizeController, ViewRectVertexes, PointSize, ElementSize, MiddlewareLayoutSelectorStyle } from '@idraw/types';
+import type {
+  ViewContext2D,
+  LayoutSizeController,
+  ViewRectVertexes,
+  PointSize,
+  ElementSize,
+  MiddlewareLayoutSelectorStyle
+} from '@idraw/types';
 
 function drawControllerBox(ctx: ViewContext2D, boxVertexes: ViewRectVertexes, style: MiddlewareLayoutSelectorStyle) {
   const { activeColor } = style;
@@ -10,7 +17,7 @@ function drawControllerBox(ctx: ViewContext2D, boxVertexes: ViewRectVertexes, st
   ctx.lineTo(boxVertexes[2].x, boxVertexes[2].y);
   ctx.lineTo(boxVertexes[3].x, boxVertexes[3].y);
   ctx.closePath();
-  ctx.fill();
+  ctx.fill('nonzero');
 
   ctx.strokeStyle = activeColor;
   ctx.lineWidth = 2;
@@ -52,9 +59,24 @@ export function drawLayoutController(
   const { topLeft, topRight, bottomLeft, bottomRight, topMiddle, rightMiddle, bottomMiddle, leftMiddle } = controller;
 
   drawControllerLine(ctx, { start: topLeft.center, end: topRight.center, centerVertexes: topMiddle.vertexes, style });
-  drawControllerLine(ctx, { start: topRight.center, end: bottomRight.center, centerVertexes: rightMiddle.vertexes, style });
-  drawControllerLine(ctx, { start: bottomRight.center, end: bottomLeft.center, centerVertexes: bottomMiddle.vertexes, style });
-  drawControllerLine(ctx, { start: bottomLeft.center, end: topLeft.center, centerVertexes: leftMiddle.vertexes, style });
+  drawControllerLine(ctx, {
+    start: topRight.center,
+    end: bottomRight.center,
+    centerVertexes: rightMiddle.vertexes,
+    style
+  });
+  drawControllerLine(ctx, {
+    start: bottomRight.center,
+    end: bottomLeft.center,
+    centerVertexes: bottomMiddle.vertexes,
+    style
+  });
+  drawControllerLine(ctx, {
+    start: bottomLeft.center,
+    end: topLeft.center,
+    centerVertexes: leftMiddle.vertexes,
+    style
+  });
 
   drawControllerBox(ctx, topLeft.vertexes, style);
   drawControllerBox(ctx, topRight.vertexes, style);
diff --git a/packages/core/src/middleware/pointer/index.ts b/packages/core/src/middleware/pointer/index.ts
index 5e2ba77..64c3965 100644
--- a/packages/core/src/middleware/pointer/index.ts
+++ b/packages/core/src/middleware/pointer/index.ts
@@ -1,9 +1,9 @@
-import type { BoardMiddleware, CoreEventMap } from '@idraw/types';
+import type { Middleware, CoreEventMap } from '@idraw/types';
 import type { DeepPointerSharedStorage } from './types';
 import { keySelectedElementList } from '../selector';
 import { coreEventKeys } from '../../config';
 
-export const MiddlewarePointer: BoardMiddleware<DeepPointerSharedStorage, CoreEventMap> = (opts) => {
+export const MiddlewarePointer: Middleware<DeepPointerSharedStorage, CoreEventMap> = (opts) => {
   const { boardContent, eventHub, sharer } = opts;
   const canvas = boardContent.boardContext.canvas;
   const container = opts.container || document.body;
@@ -15,34 +15,23 @@ export const MiddlewarePointer: BoardMiddleware<DeepPointerSharedStorage, CoreEv
     return { left, top, width, height };
   };
 
-  const contextMenuPointer = document.createElement('div');
-  contextMenuPointer.setAttribute('id', id);
-  contextMenuPointer.style.position = 'fixed';
-  contextMenuPointer.style.top = '0';
-  contextMenuPointer.style.bottom = 'unset';
-  contextMenuPointer.style.left = '0';
-  contextMenuPointer.style.right = 'unset';
-
-  // // TODO
-  // contextMenuPointer.style.width = '10px';
-  // contextMenuPointer.style.height = '10px';
-  // contextMenuPointer.style.background = 'red';
-
-  container.appendChild(contextMenuPointer);
+  let contextMenuPointer = document.createElement('div');
 
   return {
     name: '@middleware/pointer',
     use() {
-      // TODO
+      contextMenuPointer.setAttribute('id', id);
+      contextMenuPointer.style.position = 'fixed';
+      contextMenuPointer.style.top = '0';
+      contextMenuPointer.style.bottom = 'unset';
+      contextMenuPointer.style.left = '0';
+      contextMenuPointer.style.right = 'unset';
+      container.appendChild(contextMenuPointer);
     },
     disuse() {
-      // TODO
-    },
-    pointStart(e) {
-      // TODO
-    },
-    pointEnd() {
-      // TODO
+      container.removeChild(contextMenuPointer);
+      contextMenuPointer.remove();
+      contextMenuPointer = null as any;
     },
     contextMenu(e) {
       const { point } = e;
diff --git a/packages/core/src/middleware/ruler/config.ts b/packages/core/src/middleware/ruler/config.ts
index 4c9873d..c090cc9 100644
--- a/packages/core/src/middleware/ruler/config.ts
+++ b/packages/core/src/middleware/ruler/config.ts
@@ -12,7 +12,7 @@ const scaleColor = '#000000';
 const textColor = '#00000080';
 const gridColor = '#AAAAAA20';
 const gridPrimaryColor = '#AAAAAA40';
-const selectedAreaColor = '#196097';
+const selectedAreaColor = '#19609780';
 
 export const defaultStyle: MiddlewareRulerStyle = {
   background,
diff --git a/packages/core/src/middleware/ruler/index.ts b/packages/core/src/middleware/ruler/index.ts
index 05f9a14..69cf0b1 100644
--- a/packages/core/src/middleware/ruler/index.ts
+++ b/packages/core/src/middleware/ruler/index.ts
@@ -1,11 +1,22 @@
-import type { BoardMiddleware, CoreEventMap, MiddlewareRulerConfig } from '@idraw/types';
+import type { Middleware, CoreEventMap, MiddlewareRulerConfig } from '@idraw/types';
 import { getViewScaleInfoFromSnapshot, getViewSizeInfoFromSnapshot } from '@idraw/util';
-import { drawRulerBackground, drawXRuler, drawYRuler, calcXRulerScaleList, calcYRulerScaleList, drawGrid, drawScrollerSelectedArea } from './util';
+import {
+  drawRulerBackground,
+  drawXRuler,
+  drawYRuler,
+  calcXRulerScaleList,
+  calcYRulerScaleList,
+  drawGrid,
+  drawScrollerSelectedArea
+} from './util';
 import type { DeepRulerSharedStorage } from './types';
 import { defaultStyle } from './config';
 import { coreEventKeys } from '../../config';
 
-export const MiddlewareRuler: BoardMiddleware<DeepRulerSharedStorage, CoreEventMap, MiddlewareRulerConfig> = (opts, config) => {
+export const MiddlewareRuler: Middleware<DeepRulerSharedStorage, CoreEventMap, MiddlewareRulerConfig> = (
+  opts,
+  config
+) => {
   const { boardContent, viewer, eventHub, calculator } = opts;
   const { overlayContext, underlayContext } = boardContent;
   let innerConfig = {
@@ -45,7 +56,8 @@ export const MiddlewareRuler: BoardMiddleware<DeepRulerSharedStorage, CoreEventM
     },
 
     beforeDrawFrame: ({ snapshot }) => {
-      const { background, borderColor, scaleColor, textColor, gridColor, gridPrimaryColor, selectedAreaColor } = innerConfig;
+      const { background, borderColor, scaleColor, textColor, gridColor, gridPrimaryColor, selectedAreaColor } =
+        innerConfig;
 
       const style = {
         background,
@@ -60,10 +72,10 @@ export const MiddlewareRuler: BoardMiddleware<DeepRulerSharedStorage, CoreEventM
         const viewScaleInfo = getViewScaleInfoFromSnapshot(snapshot);
         const viewSizeInfo = getViewSizeInfoFromSnapshot(snapshot);
 
-        drawScrollerSelectedArea(overlayContext, { snapshot, calculator, style });
-
         drawRulerBackground(overlayContext, { viewScaleInfo, viewSizeInfo, style });
 
+        drawScrollerSelectedArea(overlayContext, { snapshot, calculator, style });
+
         const { list: xList, rulerUnit } = calcXRulerScaleList({ viewScaleInfo, viewSizeInfo });
         drawXRuler(overlayContext, { scaleList: xList, style });
 
diff --git a/packages/core/src/middleware/ruler/util.ts b/packages/core/src/middleware/ruler/util.ts
index f508861..8448400 100644
--- a/packages/core/src/middleware/ruler/util.ts
+++ b/packages/core/src/middleware/ruler/util.ts
@@ -51,7 +51,10 @@ function limitRulerUnit(unit: number): number {
   return unit;
 }
 
-function calcRulerScaleList(opts: { axis: 'X' | 'Y'; scale: number; viewLength: number; viewOffset: number }): { list: RulerScale[]; rulerUnit: number } {
+function calcRulerScaleList(opts: { axis: 'X' | 'Y'; scale: number; viewLength: number; viewOffset: number }): {
+  list: RulerScale[];
+  rulerUnit: number;
+} {
   const { scale, viewLength, viewOffset } = opts;
   const list: RulerScale[] = [];
   let rulerUnit = 10;
@@ -87,7 +90,10 @@ function calcRulerScaleList(opts: { axis: 'X' | 'Y'; scale: number; viewLength:
   return { list, rulerUnit };
 }
 
-export function calcXRulerScaleList(opts: { viewScaleInfo: ViewScaleInfo; viewSizeInfo: ViewSizeInfo }): { list: RulerScale[]; rulerUnit: number } {
+export function calcXRulerScaleList(opts: { viewScaleInfo: ViewScaleInfo; viewSizeInfo: ViewSizeInfo }): {
+  list: RulerScale[];
+  rulerUnit: number;
+} {
   const { viewScaleInfo, viewSizeInfo } = opts;
   const { scale, offsetLeft } = viewScaleInfo;
   const { width } = viewSizeInfo;
@@ -99,7 +105,10 @@ export function calcXRulerScaleList(opts: { viewScaleInfo: ViewScaleInfo; viewSi
   });
 }
 
-export function calcYRulerScaleList(opts: { viewScaleInfo: ViewScaleInfo; viewSizeInfo: ViewSizeInfo }): { list: RulerScale[]; rulerUnit: number } {
+export function calcYRulerScaleList(opts: { viewScaleInfo: ViewScaleInfo; viewSizeInfo: ViewSizeInfo }): {
+  list: RulerScale[];
+  rulerUnit: number;
+} {
   const { viewScaleInfo, viewSizeInfo } = opts;
   const { scale, offsetTop } = viewScaleInfo;
   const { height } = viewSizeInfo;
@@ -222,7 +231,7 @@ export function drawRulerBackground(
   ctx.closePath();
 
   ctx.fillStyle = background;
-  ctx.fill();
+  ctx.fill('nonzero');
   ctx.lineWidth = lineSize;
   ctx.setLineDash([]);
   ctx.strokeStyle = borderColor;
@@ -277,7 +286,11 @@ export function drawGrid(
 
 export function drawScrollerSelectedArea(
   ctx: ViewContext2D,
-  opts: { snapshot: BoardViewerFrameSnapshot<DeepRulerSharedStorage>; calculator: ViewCalculator; style: MiddlewareRulerStyle }
+  opts: {
+    snapshot: BoardViewerFrameSnapshot<DeepRulerSharedStorage>;
+    calculator: ViewCalculator;
+    style: MiddlewareRulerStyle;
+  }
 ) {
   const { snapshot, calculator, style } = opts;
   const { sharedStore } = snapshot;
@@ -285,7 +298,10 @@ export function drawScrollerSelectedArea(
   const selectedElementList = sharedStore[keySelectedElementList];
   const actionType = sharedStore[keyActionType];
 
-  if (['select', 'drag', 'drag-list', 'drag-list-end'].includes(actionType as string) && selectedElementList.length > 0) {
+  if (
+    ['select', 'drag', 'drag-list', 'drag-list-end'].includes(actionType as string) &&
+    selectedElementList.length > 0
+  ) {
     const viewScaleInfo = getViewScaleInfoFromSnapshot(snapshot);
     const viewSizeInfo = getViewSizeInfoFromSnapshot(snapshot);
     const rangeRectInfoList: ViewRectInfo[] = [];
@@ -325,7 +341,7 @@ export function drawScrollerSelectedArea(
     ctx.lineTo(xAreaStart, rulerSize);
     ctx.fillStyle = selectedAreaColor;
     ctx.closePath();
-    ctx.fill();
+    ctx.fill('nonzero');
 
     ctx.beginPath();
     ctx.moveTo(0, yAreaStart);
@@ -334,6 +350,6 @@ export function drawScrollerSelectedArea(
     ctx.lineTo(0, yAreaEnd);
     ctx.fillStyle = selectedAreaColor;
     ctx.closePath();
-    ctx.fill();
+    ctx.fill('nonzero');
   }
 }
diff --git a/packages/core/src/middleware/scaler/index.ts b/packages/core/src/middleware/scaler/index.ts
index f0dac37..a37319f 100644
--- a/packages/core/src/middleware/scaler/index.ts
+++ b/packages/core/src/middleware/scaler/index.ts
@@ -1,8 +1,8 @@
-import type { BoardMiddleware, CoreEventMap } from '@idraw/types';
+import type { Middleware, CoreEventMap } from '@idraw/types';
 import { formatNumber } from '@idraw/util';
 import { coreEventKeys } from '../../config';
 
-export const MiddlewareScaler: BoardMiddleware<Record<string, any>, CoreEventMap> = (opts) => {
+export const MiddlewareScaler: Middleware<Record<string, any>, CoreEventMap> = (opts) => {
   const { viewer, sharer, eventHub } = opts;
   const maxScale = 50;
   const minScale = 0.05;
diff --git a/packages/core/src/middleware/scroller/index.ts b/packages/core/src/middleware/scroller/index.ts
index a4e32ce..1a2f19c 100644
--- a/packages/core/src/middleware/scroller/index.ts
+++ b/packages/core/src/middleware/scroller/index.ts
@@ -1,11 +1,29 @@
-import type { Point, BoardMiddleware, PointWatcherEvent, BoardWatherWheelEvent, MiddlewareScrollerConfig } from '@idraw/types';
+import type {
+  Point,
+  Middleware,
+  PointWatcherEvent,
+  BoardWatherWheelEvent,
+  MiddlewareScrollerConfig
+} from '@idraw/types';
 import { drawScroller, isPointInScrollThumb } from './util';
 // import type { ScrollbarThumbType } from './util';
-import { keyXThumbRect, keyYThumbRect, keyPrevPoint, keyActivePoint, keyActiveThumbType, keyHoverXThumbRect, keyHoverYThumbRect, defaultStyle } from './config';
+import {
+  keyXThumbRect,
+  keyYThumbRect,
+  keyPrevPoint,
+  keyActivePoint,
+  keyActiveThumbType,
+  keyHoverXThumbRect,
+  keyHoverYThumbRect,
+  defaultStyle
+} from './config';
 import type { DeepScrollerSharedStorage } from './types';
 import { coreEventKeys } from '../../config';
 
-export const MiddlewareScroller: BoardMiddleware<DeepScrollerSharedStorage, any, MiddlewareScrollerConfig> = (opts, config) => {
+export const MiddlewareScroller: Middleware<DeepScrollerSharedStorage, any, MiddlewareScrollerConfig> = (
+  opts,
+  config
+) => {
   const { viewer, boardContent, sharer, eventHub } = opts;
   const { overlayContext } = boardContent;
   sharer.setSharedStorage(keyXThumbRect, null); // null | ElementSize
@@ -136,7 +154,14 @@ export const MiddlewareScroller: BoardMiddleware<DeepScrollerSharedStorage, any,
       }
     },
     beforeDrawFrame({ snapshot }) {
-      const { thumbBackground, thumbBorderColor, hoverThumbBackground, hoverThumbBorderColor, activeThumbBackground, activeThumbBorderColor } = innerConfig;
+      const {
+        thumbBackground,
+        thumbBorderColor,
+        hoverThumbBackground,
+        hoverThumbBorderColor,
+        activeThumbBackground,
+        activeThumbBorderColor
+      } = innerConfig;
 
       const style = {
         thumbBackground,
diff --git a/packages/core/src/middleware/scroller/util.ts b/packages/core/src/middleware/scroller/util.ts
index a824d84..f10af66 100644
--- a/packages/core/src/middleware/scroller/util.ts
+++ b/packages/core/src/middleware/scroller/util.ts
@@ -201,7 +201,7 @@ function drawScrollerThumb(
     ctx.arcTo(x, y, x + w, y, r);
     ctx.closePath();
     ctx.fillStyle = background;
-    ctx.fill();
+    ctx.fill('nonzero');
 
     ctx.beginPath();
     ctx.lineWidth = 1;
diff --git a/packages/core/src/middleware/selector/draw-base.ts b/packages/core/src/middleware/selector/draw-base.ts
index 2c112fa..88ee007 100644
--- a/packages/core/src/middleware/selector/draw-base.ts
+++ b/packages/core/src/middleware/selector/draw-base.ts
@@ -19,10 +19,15 @@ export function drawVertexes(
   ctx.lineTo(vertexes[0].x, vertexes[0].y);
   ctx.closePath();
   ctx.stroke();
-  ctx.fill();
+  ctx.fill('nonzero');
 }
 
-export function drawLine(ctx: ViewContext2D, start: PointSize, end: PointSize, opts: { borderColor: string; borderWidth: number; lineDash: number[] }) {
+export function drawLine(
+  ctx: ViewContext2D,
+  start: PointSize,
+  end: PointSize,
+  opts: { borderColor: string; borderWidth: number; lineDash: number[] }
+) {
   const { borderColor, borderWidth, lineDash } = opts;
   ctx.setLineDash([]);
   ctx.lineWidth = borderWidth;
@@ -66,7 +71,7 @@ export function drawCircleController(
     ctx.fillStyle = background;
     ctx.circle(center.x, center.y, a, b, 0, 0, 2 * Math.PI);
     ctx.closePath();
-    ctx.fill();
+    ctx.fill('nonzero');
   }
 
   // ctx.setLineDash([]);
@@ -82,10 +87,14 @@ export function drawCircleController(
   // ctx.lineTo(vertexes[0].x, vertexes[0].y);
   // ctx.closePath();
   // ctx.stroke();
-  // ctx.fill();
+  // ctx.fill('nonzero');
 }
 
-export function drawCrossVertexes(ctx: ViewContext2D, vertexes: ViewRectVertexes, opts: { borderColor: string; borderWidth: number; lineDash: number[] }) {
+export function drawCrossVertexes(
+  ctx: ViewContext2D,
+  vertexes: ViewRectVertexes,
+  opts: { borderColor: string; borderWidth: number; lineDash: number[] }
+) {
   const { borderColor, borderWidth, lineDash } = opts;
   ctx.setLineDash([]);
   ctx.lineWidth = borderWidth;
@@ -104,7 +113,11 @@ export function drawCrossVertexes(ctx: ViewContext2D, vertexes: ViewRectVertexes
   ctx.stroke();
 }
 
-export function drawCrossByCenter(ctx: ViewContext2D, center: PointSize, opts: { size: number; borderColor: string; borderWidth: number; lineDash: number[] }) {
+export function drawCrossByCenter(
+  ctx: ViewContext2D,
+  center: PointSize,
+  opts: { size: number; borderColor: string; borderWidth: number; lineDash: number[] }
+) {
   const { size, borderColor, borderWidth, lineDash } = opts;
   const minX = center.x - size / 2;
   const maxX = center.x + size / 2;
diff --git a/packages/core/src/middleware/selector/draw-debug.ts b/packages/core/src/middleware/selector/draw-debug.ts
index 5d4d1ab..73050a8 100644
--- a/packages/core/src/middleware/selector/draw-debug.ts
+++ b/packages/core/src/middleware/selector/draw-debug.ts
@@ -22,7 +22,7 @@ function drawDebugControllerVertexes(opts: {
   ctx.lineTo(v3.x, v3.y);
   ctx.lineTo(v0.x, v0.y);
   ctx.closePath();
-  ctx.fill();
+  ctx.fill('nonzero');
 
   return false;
 }
diff --git a/packages/core/src/middleware/selector/draw-wrapper.ts b/packages/core/src/middleware/selector/draw-wrapper.ts
index 78aaf84..f8cc1b3 100644
--- a/packages/core/src/middleware/selector/draw-wrapper.ts
+++ b/packages/core/src/middleware/selector/draw-wrapper.ts
@@ -99,7 +99,12 @@ export function drawSelectedElementControllersVertexes(
   const { devicePixelRatio = 1 } = viewSizeInfo;
   const { activeColor } = style;
   const { elementWrapper, topLeft, topRight, bottomLeft, bottomRight, rotate } = controller;
-  const wrapperOpts = { borderColor: activeColor, borderWidth: selectWrapperBorderWidth, background: 'transparent', lineDash: [] };
+  const wrapperOpts = {
+    borderColor: activeColor,
+    borderWidth: selectWrapperBorderWidth,
+    background: 'transparent',
+    lineDash: []
+  };
   const ctrlOpts = { ...wrapperOpts, borderWidth: resizeControllerBorderWidth, background: '#FFFFFF' };
 
   drawVertexes(ctx, calcViewVertexes(elementWrapper, opts), wrapperOpts);
@@ -115,7 +120,11 @@ export function drawSelectedElementControllersVertexes(
     drawVertexes(ctx, calcViewVertexes(bottomRight.vertexes, opts), ctrlOpts);
 
     if (element?.operations?.rotatable !== false) {
-      drawCircleController(ctx, calcViewPointSize(rotate.center, opts), { ...ctrlOpts, size: rotate.size, borderWidth: 0 });
+      drawCircleController(ctx, calcViewPointSize(rotate.center, opts), {
+        ...ctrlOpts,
+        size: rotate.size,
+        borderWidth: 0
+      });
       const rotateCenter = calcViewPointSize(rotate.center, opts);
       ctx.drawImage(
         rotateControllerPattern.canvas,
@@ -139,7 +148,11 @@ export function drawSelectedElementControllersVertexes(
   // });
 }
 
-export function drawElementListShadows(ctx: ViewContext2D, elements: Element<ElementType>[], opts?: Omit<RendererDrawElementOptions, 'loader'>) {
+export function drawElementListShadows(
+  ctx: ViewContext2D,
+  elements: Element<ElementType>[],
+  opts?: Omit<RendererDrawElementOptions, 'loader'>
+) {
   elements.forEach((elem) => {
     let { x, y, w, h } = elem;
     const { angle = 0 } = elem;
@@ -164,12 +177,15 @@ export function drawElementListShadows(ctx: ViewContext2D, elements: Element<Ele
       }
       ctx.closePath();
       ctx.stroke();
-      ctx.fill();
+      ctx.fill('nonzero');
     }
   });
 }
 
-export function drawArea(ctx: ViewContext2D, opts: { start: PointSize; end: PointSize; style: MiddlewareSelectorStyle }) {
+export function drawArea(
+  ctx: ViewContext2D,
+  opts: { start: PointSize; end: PointSize; style: MiddlewareSelectorStyle }
+) {
   const { start, end, style } = opts;
   const { activeColor, activeAreaColor } = style;
   ctx.setLineDash([]);
@@ -183,7 +199,7 @@ export function drawArea(ctx: ViewContext2D, opts: { start: PointSize; end: Poin
   ctx.lineTo(start.x, end.y);
   ctx.closePath();
   ctx.stroke();
-  ctx.fill();
+  ctx.fill('nonzero');
 }
 
 export function drawListArea(ctx: ViewContext2D, opts: { areaSize: AreaSize; style: MiddlewareSelectorStyle }) {
@@ -201,7 +217,7 @@ export function drawListArea(ctx: ViewContext2D, opts: { areaSize: AreaSize; sty
   ctx.lineTo(x, y + h);
   ctx.closePath();
   ctx.stroke();
-  ctx.fill();
+  ctx.fill('nonzero');
 }
 
 export function drawGroupQueueVertexesWrappers(
@@ -217,7 +233,12 @@ export function drawGroupQueueVertexesWrappers(
   const { activeColor } = style;
   for (let i = 0; i < vertexesList.length; i++) {
     const vertexes = vertexesList[i];
-    const wrapperOpts = { borderColor: activeColor, borderWidth: selectWrapperBorderWidth, background: 'transparent', lineDash: [4, 4] };
+    const wrapperOpts = {
+      borderColor: activeColor,
+      borderWidth: selectWrapperBorderWidth,
+      background: 'transparent',
+      lineDash: [4, 4]
+    };
     drawVertexes(ctx, calcViewVertexes(vertexes, opts), wrapperOpts);
   }
 }
diff --git a/packages/core/src/middleware/selector/index.ts b/packages/core/src/middleware/selector/index.ts
index 965f15f..c4443a2 100644
--- a/packages/core/src/middleware/selector/index.ts
+++ b/packages/core/src/middleware/selector/index.ts
@@ -14,7 +14,8 @@ import {
   deepResizeGroupElement,
   getElementSize,
   calcPointMoveElementInGroup,
-  isSameElementSize
+  isSameElementSize,
+  toFlattenElement
 } from '@idraw/util';
 import type {
   Data,
@@ -24,13 +25,14 @@ import type {
   ViewSizeInfo,
   ElementSizeController,
   MiddlewareSelectorConfig,
-  ElementSize
+  ElementSize,
+  ModifyRecord
 } from '@idraw/types';
 import type {
   Point,
   PointSize,
   PointWatcherEvent,
-  BoardMiddleware,
+  Middleware,
   Element,
   ActionType,
   ResizeType,
@@ -93,7 +95,7 @@ import { MIDDLEWARE_INTERNAL_EVENT_SHOW_INFO_ANGLE } from '../info';
 export { keySelectedElementList, keyHoverElement, keyActionType, keyResizeType, keyGroupQueue };
 export type { DeepSelectorSharedStorage, ActionType };
 
-export const MiddlewareSelector: BoardMiddleware<
+export const MiddlewareSelector: Middleware<
   DeepSelectorSharedStorage,
   CoreEventMap & {
     [MIDDLEWARE_INTERNAL_EVENT_SHOW_INFO_ANGLE]: { show: boolean };
@@ -107,6 +109,7 @@ export const MiddlewareSelector: BoardMiddleware<
   const { viewer, sharer, boardContent, calculator, eventHub } = opts;
   const { overlayContext } = boardContent;
   let prevPoint: Point | null = null;
+  let pointStartElementSizeList: Array<Partial<ElementSize> & { uuid: string }> = [];
   let moveOriginalStartPoint: Point | null = null;
   let moveOriginalStartElementSize: ElementSize | null = null;
   let inBusyMode: 'resize' | 'drag' | 'drag-list' | 'area' | null = null;
@@ -283,6 +286,8 @@ export const MiddlewareSelector: BoardMiddleware<
       eventHub.off(coreEventKeys.CLEAR_SELECT, selectClearCallback);
       eventHub.off(coreEventKeys.SELECT_IN_GROUP, selectInGroupCallback);
       eventHub.off(coreEventKeys.SNAP_TO_GRID, setSnapToSnapCallback);
+      clear();
+      innerConfig = null as any;
     },
 
     resetConfig(config) {
@@ -428,11 +433,7 @@ export const MiddlewareSelector: BoardMiddleware<
           const target = getPointTarget(e.point, pointTargetBaseOptions());
           const isLockedElement = target?.elements?.length === 1 && target.elements[0]?.operations?.locked === true;
 
-          // if (target?.elements?.length === 1 && target.elements[0]?.operations?.locked === true) {
-          //   return;
-          // } else {
           updateHoverElement(null);
-          // }
 
           if (target?.elements?.length === 1) {
             moveOriginalStartElementSize = getElementSize(target?.elements[0]);
@@ -442,6 +443,7 @@ export const MiddlewareSelector: BoardMiddleware<
           } else if (target.type === 'over-element' && target?.elements?.length === 1) {
             updateSelectedElementList([target.elements[0]], { triggerEvent: true });
             sharer.setSharedStorage(keyActionType, 'drag');
+            pointStartElementSizeList = [{ ...getElementSize(target?.elements[0]), uuid: target?.elements[0].uuid }];
           } else if (target.type?.startsWith('resize-')) {
             sharer.setSharedStorage(keyResizeType, target.type as ResizeType);
             sharer.setSharedStorage(keyActionType, 'resize');
@@ -487,6 +489,7 @@ export const MiddlewareSelector: BoardMiddleware<
       } else if (target.type === 'over-element' && target?.elements?.length === 1) {
         updateSelectedElementList([target.elements[0]], { triggerEvent: true });
         sharer.setSharedStorage(keyActionType, 'drag');
+        pointStartElementSizeList = [{ ...getElementSize(target?.elements[0]), uuid: target?.elements[0].uuid }];
       } else if (target.type?.startsWith('resize-')) {
         sharer.setSharedStorage(keyResizeType, target.type as ResizeType);
         sharer.setSharedStorage(keyActionType, 'resize');
@@ -562,7 +565,7 @@ export const MiddlewareSelector: BoardMiddleware<
           elems[0].y = calculator.toGridNum(moveOriginalStartElementSize.y + totalMoveY);
           updateSelectedElementList([elems[0]]);
           calculator.modifyVirtualFlatItemMap(data, {
-            modifyOptions: {
+            modifyInfo: {
               type: 'updateElement',
               content: {
                 element: elems[0],
@@ -586,7 +589,7 @@ export const MiddlewareSelector: BoardMiddleware<
               elem.y = calculator.toGridNum(elem.y + moveY);
 
               calculator.modifyVirtualFlatItemMap(data, {
-                modifyOptions: {
+                modifyInfo: {
                   type: 'updateElement',
                   content: {
                     element: elem,
@@ -675,7 +678,7 @@ export const MiddlewareSelector: BoardMiddleware<
 
           updateSelectedElementList([elems[0]]);
           calculator.modifyVirtualFlatItemMap(data, {
-            modifyOptions: {
+            modifyInfo: {
               type: 'updateElement',
               content: {
                 element: elems[0],
@@ -775,7 +778,37 @@ export const MiddlewareSelector: BoardMiddleware<
             type = 'resizeElement';
           }
           if (hasChangedData) {
-            eventHub.trigger(coreEventKeys.CHANGE, { data, type, selectedElements, hoverElement });
+            const startSize = pointStartElementSizeList[0] as ElementSize & { uuid: string };
+            let modifyRecord: ModifyRecord | undefined = undefined;
+            if (selectedElements.length === 1) {
+              modifyRecord = {
+                type: 'dragElement',
+                time: 0,
+                content: {
+                  method: 'modifyElement',
+                  uuid: startSize.uuid,
+                  before: toFlattenElement(startSize),
+                  after: toFlattenElement(getElementSize(selectedElements[0]))
+                }
+              };
+            } else if (selectedElements.length > 1) {
+              modifyRecord = {
+                type: 'dragElements',
+                time: 0,
+                content: {
+                  method: 'modifyElements',
+                  before: pointStartElementSizeList.map((item) => ({
+                    ...toFlattenElement(item),
+                    uuid: item.uuid
+                  })),
+                  after: selectedElements.map((item) => ({
+                    ...toFlattenElement(getElementSize(item)),
+                    uuid: item.uuid
+                  }))
+                }
+              };
+            }
+            eventHub.trigger(coreEventKeys.CHANGE, { data, type, selectedElements, hoverElement, modifyRecord });
             hasChangedData = false;
           }
         }
diff --git a/packages/core/src/middleware/selector/types.ts b/packages/core/src/middleware/selector/types.ts
index 20b5f6b..5785f5f 100644
--- a/packages/core/src/middleware/selector/types.ts
+++ b/packages/core/src/middleware/selector/types.ts
@@ -10,7 +10,7 @@ import {
   ViewSizeInfo,
   ViewCalculator,
   PointWatcherEvent,
-  BoardMiddleware,
+  Middleware,
   ViewRectVertexes,
   ElementSizeController,
   ElementPosition
@@ -54,7 +54,7 @@ export {
   ViewSizeInfo,
   ViewCalculator,
   PointWatcherEvent,
-  BoardMiddleware
+  Middleware
 };
 
 export type ControllerStyle = ElementSize & {
diff --git a/packages/core/src/middleware/text-editor/index.ts b/packages/core/src/middleware/text-editor/index.ts
index d30a254..e178ccb 100644
--- a/packages/core/src/middleware/text-editor/index.ts
+++ b/packages/core/src/middleware/text-editor/index.ts
@@ -1,5 +1,5 @@
-import type { BoardMiddleware, CoreEventMap, Element, ElementSize, ViewScaleInfo, ElementPosition } from '@idraw/types';
-import { limitAngle, getDefaultElementDetailConfig, enhanceFontFamliy } from '@idraw/util';
+import type { Middleware, CoreEventMap, Element, ElementSize, ViewScaleInfo, ElementPosition } from '@idraw/types';
+import { limitAngle, getDefaultElementDetailConfig, enhanceFontFamliy, updateElementInList } from '@idraw/util';
 import { coreEventKeys } from '../../config';
 
 type TextEditEvent = {
@@ -19,21 +19,23 @@ type TextChangeEvent = {
   position: ElementPosition;
 };
 
-type ExtendEventMap = Record<typeof coreEventKeys.TEXT_EDIT, TextEditEvent> & Record<typeof coreEventKeys.TEXT_CHANGE, TextChangeEvent>;
+type ExtendEventMap = Record<typeof coreEventKeys.TEXT_EDIT, TextEditEvent> &
+  Record<typeof coreEventKeys.TEXT_CHANGE, TextChangeEvent>;
 
 const defaultElementDetail = getDefaultElementDetailConfig();
 
-export const MiddlewareTextEditor: BoardMiddleware<ExtendEventMap, CoreEventMap & ExtendEventMap> = (opts) => {
-  const { eventHub, boardContent, viewer, sharer } = opts;
+export const MiddlewareTextEditor: Middleware<ExtendEventMap, CoreEventMap & ExtendEventMap> = (opts) => {
+  const { eventHub, boardContent, viewer, sharer, calculator } = opts;
   const canvas = boardContent.boardContext.canvas;
-  // const textarea = document.createElement('textarea');
-  const textarea = document.createElement('div');
-  textarea.setAttribute('contenteditable', 'true');
-  const canvasWrapper = document.createElement('div');
   const container = opts.container || document.body;
-  const mask = document.createElement('div');
+  let textarea = document.createElement('div');
+  textarea.setAttribute('contenteditable', 'true');
+  let canvasWrapper = document.createElement('div');
+  let mask = document.createElement('div');
   let activeElem: Element<'text'> | null = null;
   let activePosition: ElementPosition = [];
+  let originText: string = '';
+
   const id = `idraw-middleware-text-editor-${Math.random().toString(26).substring(2)}`;
   mask.setAttribute('id', id);
   canvasWrapper.appendChild(textarea);
@@ -53,12 +55,14 @@ export const MiddlewareTextEditor: BoardMiddleware<ExtendEventMap, CoreEventMap
     resetCanvasWrapper();
     resetTextArea(e);
     mask.style.display = 'block';
+    originText = '';
     if (activeElem?.uuid) {
       sharer.setActiveOverrideElemenentMap({
         [activeElem.uuid]: {
           operations: { invisible: true }
         }
       });
+      originText = activeElem.detail.text || '';
       viewer.drawFrame();
     }
   };
@@ -201,13 +205,15 @@ export const MiddlewareTextEditor: BoardMiddleware<ExtendEventMap, CoreEventMap
     // canvasWrapper.style.background = '#000000';
   };
 
-  mask.addEventListener('click', () => {
+  const maskClickEvent = () => {
     hideTextArea();
-  });
-  textarea.addEventListener('click', (e) => {
+  };
+
+  const textareaClickEvent = (e: MouseEvent) => {
     e.stopPropagation();
-  });
-  textarea.addEventListener('input', () => {
+  };
+
+  const textareaInputEvent = () => {
     if (activeElem && activePosition) {
       // activeElem.detail.text = (e.target as any).value || '';
       activeElem.detail.text = textarea.innerText || '';
@@ -220,11 +226,14 @@ export const MiddlewareTextEditor: BoardMiddleware<ExtendEventMap, CoreEventMap
         },
         position: [...(activePosition || [])]
       });
+      calculator.modifyText(activeElem);
       viewer.drawFrame();
     }
-  });
-  textarea.addEventListener('blur', () => {
+  };
+
+  const textareaBlurEvent = () => {
     if (activeElem && activePosition) {
+      activeElem.detail.text = textarea.innerText || '';
       eventHub.trigger(coreEventKeys.TEXT_CHANGE, {
         element: {
           uuid: activeElem.uuid,
@@ -234,23 +243,75 @@ export const MiddlewareTextEditor: BoardMiddleware<ExtendEventMap, CoreEventMap
         },
         position: [...activePosition]
       });
+
+      const data = sharer.getActiveStorage('data') || { elements: [] };
+      const updateContent = {
+        detail: {
+          text: activeElem.detail.text
+        }
+      };
+      updateElementInList(activeElem.uuid, updateContent, data.elements);
+
+      eventHub.trigger(coreEventKeys.CHANGE, {
+        selectedElements: [
+          {
+            ...activeElem,
+            detail: {
+              ...activeElem.detail,
+              ...updateContent.detail
+            }
+          }
+        ],
+        data,
+        type: 'modifyElement',
+        modifyRecord: {
+          type: 'modifyElement',
+          time: Date.now(),
+          content: {
+            method: 'modifyElement',
+            uuid: activeElem.uuid as string,
+            before: {
+              'detail.text': originText
+            },
+            after: {
+              'detail.text': activeElem.detail.text
+            }
+          }
+        }
+      });
+
+      calculator.modifyText(activeElem);
+      viewer.drawFrame();
     }
 
     hideTextArea();
-  });
-  textarea.addEventListener('keydown', (e) => {
+  };
+
+  const textareaKeyDownEvent = (e: KeyboardEvent) => {
     e.stopPropagation();
-  });
-  textarea.addEventListener('keypress', (e) => {
+  };
+
+  const textareaKeyPressEvent = (e: KeyboardEvent) => {
     e.stopPropagation();
-  });
-  textarea.addEventListener('keyup', (e) => {
+  };
+
+  const textareaKeyUpEvent = (e: KeyboardEvent) => {
     e.stopPropagation();
-  });
-  textarea.addEventListener('wheel', (e) => {
+  };
+
+  const textareaWheelEvent = (e: WheelEvent) => {
     e.stopPropagation();
     e.preventDefault();
-  });
+  };
+
+  mask.addEventListener('click', maskClickEvent);
+  textarea.addEventListener('click', textareaClickEvent);
+  textarea.addEventListener('input', textareaInputEvent);
+  textarea.addEventListener('blur', textareaBlurEvent);
+  textarea.addEventListener('keydown', textareaKeyDownEvent);
+  textarea.addEventListener('keypress', textareaKeyPressEvent);
+  textarea.addEventListener('keyup', textareaKeyUpEvent);
+  textarea.addEventListener('wheel', textareaWheelEvent);
 
   const textEditCallback = (e: TextEditEvent) => {
     if (e?.position && e?.element && e?.element?.type === 'text') {
@@ -267,6 +328,27 @@ export const MiddlewareTextEditor: BoardMiddleware<ExtendEventMap, CoreEventMap
     },
     disuse() {
       eventHub.off(coreEventKeys.TEXT_EDIT, textEditCallback);
+      mask.removeEventListener('click', maskClickEvent);
+      textarea.removeEventListener('click', textareaClickEvent);
+      textarea.removeEventListener('input', textareaInputEvent);
+      textarea.removeEventListener('blur', textareaBlurEvent);
+      textarea.removeEventListener('keydown', textareaKeyDownEvent);
+      textarea.removeEventListener('keypress', textareaKeyPressEvent);
+      textarea.removeEventListener('keyup', textareaKeyUpEvent);
+      textarea.removeEventListener('wheel', textareaWheelEvent);
+      canvasWrapper.removeChild(textarea);
+      mask.removeChild(canvasWrapper);
+      container.removeChild(mask);
+
+      textarea.remove();
+      canvasWrapper.remove();
+      mask = null as any;
+      textarea = null as any;
+      canvasWrapper = null as any;
+      mask = null as any;
+      activeElem = null;
+      activePosition = null as any;
+      originText = null as any;
     }
   };
 };
diff --git a/packages/core/src/record.ts b/packages/core/src/record.ts
new file mode 100644
index 0000000..2fa6b46
--- /dev/null
+++ b/packages/core/src/record.ts
@@ -0,0 +1,34 @@
+import type { RecursivePartial, FlattenElement, Element, ModifyRecord } from '@idraw/types';
+import { toFlattenElement, get } from '@idraw/util';
+
+export function getModifyElementRecord(opts: {
+  modifiedElement: RecursivePartial<Omit<Element, 'uuid'>> & Pick<Element, 'uuid'>;
+  beforeElement: Element;
+}): ModifyRecord<'modifyElement'> {
+  const { modifiedElement, beforeElement } = opts;
+  const { uuid, ...restElement } = modifiedElement;
+  const after = toFlattenElement(restElement);
+  let before: FlattenElement = {};
+  Object.keys(after).forEach((key: string) => {
+    let val = get(beforeElement, key);
+    if (val === undefined && /(borderRadius|borderWidth)\[[0-9]{1,}\]$/.test(key)) {
+      key = key.replace(/\[[0-9]{1,}\]$/, '');
+      val = get(beforeElement, key);
+    }
+    before[key] = val;
+  });
+  before = toFlattenElement(before);
+
+  const record: ModifyRecord<'modifyElement'> = {
+    type: 'modifyElement',
+    time: Date.now(),
+    content: {
+      method: 'modifyElement',
+      uuid,
+      before,
+      after
+    }
+  };
+
+  return record;
+}
diff --git a/packages/idraw/__tests__/__snapshots__/index.test.ts.snap b/packages/idraw/__tests__/__snapshots__/index.test.ts.snap
deleted file mode 100644
index 0743723..0000000
--- a/packages/idraw/__tests__/__snapshots__/index.test.ts.snap
+++ /dev/null
@@ -1,1269 +0,0 @@
-// Jest Snapshot v1, https://goo.gl/fbAQLP
-
-exports[`idraw context 1`] = `
-[
-  {
-    "props": {
-      "height": 1600,
-      "width": 2400,
-      "x": 0,
-      "y": 0,
-    },
-    "transform": [
-      1,
-      0,
-      0,
-      1,
-      0,
-      0,
-    ],
-    "type": "clearRect",
-  },
-  {
-    "props": {
-      "path": [
-        {
-          "props": {},
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "beginPath",
-        },
-        {
-          "props": {
-            "x": 120,
-            "y": 20,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "moveTo",
-        },
-        {
-          "props": {
-            "cpx1": 860,
-            "cpx2": 860,
-            "cpy1": 20,
-            "cpy2": 460,
-            "radius": 100,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 860,
-            "cpx2": 20,
-            "cpy1": 460,
-            "cpy2": 460,
-            "radius": 100,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 20,
-            "cpx2": 20,
-            "cpy1": 460,
-            "cpy2": 20,
-            "radius": 100,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 20,
-            "cpx2": 860,
-            "cpy1": 20,
-            "cpy2": 20,
-            "radius": 100,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {},
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "closePath",
-        },
-      ],
-    },
-    "transform": [
-      1,
-      0,
-      0,
-      1,
-      0,
-      0,
-    ],
-    "type": "stroke",
-  },
-  {
-    "props": {
-      "fillRule": "nonzero",
-      "path": [
-        {
-          "props": {},
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "beginPath",
-        },
-        {
-          "props": {
-            "x": 120,
-            "y": 40,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "moveTo",
-        },
-        {
-          "props": {
-            "cpx1": 840,
-            "cpx2": 840,
-            "cpy1": 40,
-            "cpy2": 440,
-            "radius": 80,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 840,
-            "cpx2": 40,
-            "cpy1": 440,
-            "cpy2": 440,
-            "radius": 80,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 40,
-            "cpx2": 40,
-            "cpy1": 440,
-            "cpy2": 40,
-            "radius": 80,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 40,
-            "cpx2": 840,
-            "cpy1": 40,
-            "cpy2": 40,
-            "radius": 80,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {},
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "closePath",
-        },
-      ],
-    },
-    "transform": [
-      1,
-      0,
-      0,
-      1,
-      0,
-      0,
-    ],
-    "type": "fill",
-  },
-  {
-    "props": {
-      "path": [
-        {
-          "props": {},
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "beginPath",
-        },
-        {
-          "props": {
-            "x": 560,
-            "y": 316,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "moveTo",
-        },
-        {
-          "props": {
-            "cpx1": 1124,
-            "cpx2": 1124,
-            "cpy1": 316,
-            "cpy2": 804,
-            "radius": 244,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 1124,
-            "cpx2": 316,
-            "cpy1": 804,
-            "cpy2": 804,
-            "radius": 244,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 316,
-            "cpx2": 316,
-            "cpy1": 804,
-            "cpy2": 316,
-            "radius": 244,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 316,
-            "cpx2": 1124,
-            "cpy1": 316,
-            "cpy2": 316,
-            "radius": 244,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {},
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "closePath",
-        },
-      ],
-    },
-    "transform": [
-      1,
-      0,
-      0,
-      1,
-      0,
-      0,
-    ],
-    "type": "stroke",
-  },
-  {
-    "props": {
-      "fillRule": "nonzero",
-      "path": [
-        {
-          "props": {},
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "beginPath",
-        },
-        {
-          "props": {
-            "x": 560,
-            "y": 320,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "moveTo",
-        },
-        {
-          "props": {
-            "cpx1": 1120,
-            "cpx2": 1120,
-            "cpy1": 320,
-            "cpy2": 800,
-            "radius": 240,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 1120,
-            "cpx2": 320,
-            "cpy1": 800,
-            "cpy2": 800,
-            "radius": 240,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 320,
-            "cpx2": 320,
-            "cpy1": 800,
-            "cpy2": 320,
-            "radius": 240,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 320,
-            "cpx2": 1120,
-            "cpy1": 320,
-            "cpy2": 320,
-            "radius": 240,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {},
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "closePath",
-        },
-      ],
-    },
-    "transform": [
-      1,
-      0,
-      0,
-      1,
-      0,
-      0,
-    ],
-    "type": "fill",
-  },
-  {
-    "props": {
-      "maxWidth": null,
-      "text": "Hello Text",
-      "x": 715,
-      "y": 520,
-    },
-    "transform": [
-      1,
-      0,
-      0,
-      1,
-      0,
-      0,
-    ],
-    "type": "fillText",
-  },
-]
-`;
-
-exports[`idraw context 2`] = `
-[
-  {
-    "props": {
-      "height": 1600,
-      "width": 2400,
-      "x": 0,
-      "y": 0,
-    },
-    "transform": [
-      1,
-      0,
-      0,
-      1,
-      0,
-      0,
-    ],
-    "type": "clearRect",
-  },
-  {
-    "props": {
-      "height": 1600,
-      "width": 2400,
-      "x": 0,
-      "y": 0,
-    },
-    "transform": [
-      1,
-      0,
-      0,
-      1,
-      0,
-      0,
-    ],
-    "type": "clearRect",
-  },
-  {
-    "props": {
-      "dHeight": 1600,
-      "dWidth": 2400,
-      "dx": 0,
-      "dy": 0,
-      "img": <canvas
-        height="1600"
-        width="2400"
-      />,
-      "sHeight": 1600,
-      "sWidth": 2400,
-      "sx": 0,
-      "sy": 0,
-    },
-    "transform": [
-      1,
-      0,
-      0,
-      1,
-      0,
-      0,
-    ],
-    "type": "drawImage",
-  },
-  {
-    "props": {
-      "dHeight": 1600,
-      "dWidth": 2400,
-      "dx": 0,
-      "dy": 0,
-      "img": <canvas
-        height="1600"
-        width="2400"
-      />,
-      "sHeight": 1600,
-      "sWidth": 2400,
-      "sx": 0,
-      "sy": 0,
-    },
-    "transform": [
-      1,
-      0,
-      0,
-      1,
-      0,
-      0,
-    ],
-    "type": "drawImage",
-  },
-]
-`;
-
-exports[`idraw undo/redo 1`] = `
-[
-  {
-    "props": {
-      "height": 1600,
-      "width": 2400,
-      "x": 0,
-      "y": 0,
-    },
-    "transform": [
-      1,
-      0,
-      0,
-      1,
-      0,
-      0,
-    ],
-    "type": "clearRect",
-  },
-  {
-    "props": {
-      "path": [
-        {
-          "props": {},
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "beginPath",
-        },
-        {
-          "props": {
-            "x": 120,
-            "y": 20,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "moveTo",
-        },
-        {
-          "props": {
-            "cpx1": 860,
-            "cpx2": 860,
-            "cpy1": 20,
-            "cpy2": 460,
-            "radius": 100,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 860,
-            "cpx2": 20,
-            "cpy1": 460,
-            "cpy2": 460,
-            "radius": 100,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 20,
-            "cpx2": 20,
-            "cpy1": 460,
-            "cpy2": 20,
-            "radius": 100,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 20,
-            "cpx2": 860,
-            "cpy1": 20,
-            "cpy2": 20,
-            "radius": 100,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {},
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "closePath",
-        },
-      ],
-    },
-    "transform": [
-      1,
-      0,
-      0,
-      1,
-      0,
-      0,
-    ],
-    "type": "stroke",
-  },
-  {
-    "props": {
-      "fillRule": "nonzero",
-      "path": [
-        {
-          "props": {},
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "beginPath",
-        },
-        {
-          "props": {
-            "x": 120,
-            "y": 40,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "moveTo",
-        },
-        {
-          "props": {
-            "cpx1": 840,
-            "cpx2": 840,
-            "cpy1": 40,
-            "cpy2": 440,
-            "radius": 80,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 840,
-            "cpx2": 40,
-            "cpy1": 440,
-            "cpy2": 440,
-            "radius": 80,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 40,
-            "cpx2": 40,
-            "cpy1": 440,
-            "cpy2": 40,
-            "radius": 80,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 40,
-            "cpx2": 840,
-            "cpy1": 40,
-            "cpy2": 40,
-            "radius": 80,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {},
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "closePath",
-        },
-      ],
-    },
-    "transform": [
-      1,
-      0,
-      0,
-      1,
-      0,
-      0,
-    ],
-    "type": "fill",
-  },
-  {
-    "props": {
-      "path": [
-        {
-          "props": {},
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "beginPath",
-        },
-        {
-          "props": {
-            "x": 560,
-            "y": 316,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "moveTo",
-        },
-        {
-          "props": {
-            "cpx1": 1124,
-            "cpx2": 1124,
-            "cpy1": 316,
-            "cpy2": 804,
-            "radius": 244,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 1124,
-            "cpx2": 316,
-            "cpy1": 804,
-            "cpy2": 804,
-            "radius": 244,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 316,
-            "cpx2": 316,
-            "cpy1": 804,
-            "cpy2": 316,
-            "radius": 244,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 316,
-            "cpx2": 1124,
-            "cpy1": 316,
-            "cpy2": 316,
-            "radius": 244,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {},
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "closePath",
-        },
-      ],
-    },
-    "transform": [
-      1,
-      0,
-      0,
-      1,
-      0,
-      0,
-    ],
-    "type": "stroke",
-  },
-  {
-    "props": {
-      "fillRule": "nonzero",
-      "path": [
-        {
-          "props": {},
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "beginPath",
-        },
-        {
-          "props": {
-            "x": 560,
-            "y": 320,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "moveTo",
-        },
-        {
-          "props": {
-            "cpx1": 1120,
-            "cpx2": 1120,
-            "cpy1": 320,
-            "cpy2": 800,
-            "radius": 240,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 1120,
-            "cpx2": 320,
-            "cpy1": 800,
-            "cpy2": 800,
-            "radius": 240,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 320,
-            "cpx2": 320,
-            "cpy1": 800,
-            "cpy2": 320,
-            "radius": 240,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {
-            "cpx1": 320,
-            "cpx2": 1120,
-            "cpy1": 320,
-            "cpy2": 320,
-            "radius": 240,
-          },
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "arcTo",
-        },
-        {
-          "props": {},
-          "transform": [
-            1,
-            0,
-            0,
-            1,
-            0,
-            0,
-          ],
-          "type": "closePath",
-        },
-      ],
-    },
-    "transform": [
-      1,
-      0,
-      0,
-      1,
-      0,
-      0,
-    ],
-    "type": "fill",
-  },
-  {
-    "props": {
-      "maxWidth": null,
-      "text": "Hello Text",
-      "x": 715,
-      "y": 520,
-    },
-    "transform": [
-      1,
-      0,
-      0,
-      1,
-      0,
-      0,
-    ],
-    "type": "fillText",
-  },
-]
-`;
-
-exports[`idraw undo/redo 2`] = `
-[
-  {
-    "props": {
-      "height": 1600,
-      "width": 2400,
-      "x": 0,
-      "y": 0,
-    },
-    "transform": [
-      1,
-      0,
-      0,
-      1,
-      0,
-      0,
-    ],
-    "type": "clearRect",
-  },
-  {
-    "props": {
-      "height": 1600,
-      "width": 2400,
-      "x": 0,
-      "y": 0,
-    },
-    "transform": [
-      1,
-      0,
-      0,
-      1,
-      0,
-      0,
-    ],
-    "type": "clearRect",
-  },
-  {
-    "props": {
-      "dHeight": 1600,
-      "dWidth": 2400,
-      "dx": 0,
-      "dy": 0,
-      "img": <canvas
-        height="1600"
-        width="2400"
-      />,
-      "sHeight": 1600,
-      "sWidth": 2400,
-      "sx": 0,
-      "sy": 0,
-    },
-    "transform": [
-      1,
-      0,
-      0,
-      1,
-      0,
-      0,
-    ],
-    "type": "drawImage",
-  },
-  {
-    "props": {
-      "dHeight": 1600,
-      "dWidth": 2400,
-      "dx": 0,
-      "dy": 0,
-      "img": <canvas
-        height="1600"
-        width="2400"
-      />,
-      "sHeight": 1600,
-      "sWidth": 2400,
-      "sx": 0,
-      "sy": 0,
-    },
-    "transform": [
-      1,
-      0,
-      0,
-      1,
-      0,
-      0,
-    ],
-    "type": "drawImage",
-  },
-]
-`;
diff --git a/packages/idraw/__tests__/history-addElement.test.ts b/packages/idraw/__tests__/history-addElement.test.ts
new file mode 100644
index 0000000..213b8c8
--- /dev/null
+++ b/packages/idraw/__tests__/history-addElement.test.ts
@@ -0,0 +1,171 @@
+import { iDraw, useHistory, deepClone, createElement, findElementFromListByPosition } from 'idraw';
+
+const createData = () => ({
+  elements: [
+    createElement('rect', {
+      uuid: 'test-001',
+      x: 0,
+      y: 0,
+      w: 100,
+      h: 100,
+      detail: {
+        background: '#DDDDDD'
+      }
+    }),
+    createElement('group', {
+      uuid: 'test-005',
+      detail: {
+        children: [
+          createElement('image', { uuid: 'test-004', detail: { src: 'https://example.com/001.png' } }),
+          createElement('circle', { uuid: 'test-007' }),
+          createElement('text', {
+            uuid: 'test-008',
+            detail: {
+              text: 'Text in Group'
+            }
+          }),
+          createElement('image', { uuid: 'test-009', detail: { src: 'https://example.com/002.png' } })
+        ]
+      }
+    })
+  ]
+});
+
+describe('idraw: useHistory ', () => {
+  beforeEach(() => {
+    jest.useFakeTimers().setSystemTime(new Date('2025-01-01'));
+  });
+
+  test('updateElement', () => {
+    const data = createData();
+    const div = document.createElement('div') as HTMLDivElement;
+
+    const idraw = new iDraw(div, {
+      height: 200,
+      width: 200
+    });
+    const { MiddlewareHistory, history } = useHistory({ instance: idraw });
+    const { undo, redo, __getDoRecords, __getUndoRecords } = history;
+    idraw.use(MiddlewareHistory);
+    idraw.setData(data);
+
+    // modify 1: do
+    const newElement1 = idraw.createElement('rect', {
+      x: 22,
+      y: 33,
+      h: 300,
+      w: 400,
+      name: 'new element 001',
+      detail: {
+        background: '#666666'
+      }
+    });
+    const position = [1, 2];
+    idraw.addElement(newElement1, {
+      position
+    });
+    const record1 = {
+      type: 'addElement',
+      time: new Date().getTime(),
+      content: {
+        method: 'addElement',
+        uuid: newElement1.uuid,
+        position: [...position],
+        element: deepClone(newElement1)
+      }
+    };
+    expect(findElementFromListByPosition(position, idraw.getData()?.elements || [])).toStrictEqual(newElement1);
+    expect(__getDoRecords()).toStrictEqual([record1]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+
+    // modify 2: do
+    const newElement2 = idraw.createElement('text', {
+      x: 22,
+      y: 33,
+      h: 300,
+      w: 400,
+      name: 'new element 002',
+      detail: {
+        text: 'Hello Element'
+      }
+    });
+    idraw.addElement(newElement2, { position });
+    const record2 = {
+      type: 'addElement',
+      time: new Date().getTime(),
+      content: {
+        method: 'addElement',
+        uuid: newElement2.uuid,
+        position: [...position],
+        element: deepClone(newElement2)
+      }
+    };
+    expect(findElementFromListByPosition(position, idraw.getData()?.elements || [])).toStrictEqual(newElement2);
+    expect(__getDoRecords()).toStrictEqual([record1, record2]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+
+    // modify 3: undo
+    undo();
+    const record3 = {
+      type: 'undo',
+      time: new Date().getTime(),
+      content: {
+        method: 'deleteElement',
+        uuid: record2.content.uuid,
+        position: deepClone(record2.content.position),
+        element: deepClone(record2.content.element)
+      }
+    };
+    expect(findElementFromListByPosition(position, idraw.getData()?.elements || [])).toStrictEqual(newElement1);
+    expect(__getDoRecords()).toStrictEqual([record1]);
+    expect(__getUndoRecords()).toStrictEqual([record3]);
+
+    // modify 4: undo
+    undo();
+    const record4 = {
+      type: 'undo',
+      time: new Date().getTime(),
+      content: {
+        method: 'deleteElement',
+        uuid: record1.content.uuid,
+        position: deepClone(record1.content.position),
+        element: deepClone(record1.content.element)
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(createData());
+    expect(__getDoRecords()).toStrictEqual([]);
+    expect(__getUndoRecords()).toStrictEqual([record3, record4]);
+
+    // modify 5: redo
+    redo();
+    const record5 = {
+      type: 'redo',
+      time: new Date().getTime(),
+      content: {
+        method: 'addElement',
+        uuid: record4.content.uuid,
+        position: record4.content.position,
+        element: deepClone(record4.content.element)
+      }
+    };
+    expect(findElementFromListByPosition(position, idraw.getData()?.elements || [])).toStrictEqual(newElement1);
+    expect(__getDoRecords()).toStrictEqual([record5]);
+    expect(__getUndoRecords()).toStrictEqual([record3]);
+
+    // modify 5: redo
+    redo();
+    const record6 = {
+      type: 'redo',
+      time: new Date().getTime(),
+      content: {
+        method: 'addElement',
+        uuid: record3.content.uuid,
+        position: record3.content.position,
+        element: deepClone(record3.content.element)
+      }
+    };
+    expect(findElementFromListByPosition(position, idraw.getData()?.elements || [])).toStrictEqual(newElement2);
+    expect(__getDoRecords()).toStrictEqual([record5, record6]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+  });
+});
diff --git a/packages/idraw/__tests__/history-deleteElement.test.ts b/packages/idraw/__tests__/history-deleteElement.test.ts
new file mode 100644
index 0000000..498fcd0
--- /dev/null
+++ b/packages/idraw/__tests__/history-deleteElement.test.ts
@@ -0,0 +1,158 @@
+import { iDraw, useHistory, deepClone, createElement, findElementFromListByPosition } from 'idraw';
+import type { Element } from 'idraw';
+
+const createData = () => ({
+  elements: [
+    createElement('rect', {
+      uuid: 'test-000',
+      x: 0,
+      y: 0,
+      w: 100,
+      h: 100,
+      detail: {
+        background: '#DDDDDD'
+      }
+    }),
+    createElement('group', {
+      uuid: 'test-001',
+      detail: {
+        children: [
+          createElement('image', { uuid: 'test-001-000', detail: { src: 'https://example.com/001.png' } }),
+          createElement('circle', { uuid: 'test-001-001' }),
+          createElement('text', {
+            uuid: 'test-001-002',
+            detail: {
+              text: 'Text in Group'
+            }
+          }),
+          createElement('image', { uuid: 'test-001-003', detail: { src: 'https://example.com/002.png' } }),
+          createElement('rect', { uuid: 'test-001-004' }),
+          createElement('circle', { uuid: 'test-001-005' })
+        ]
+      }
+    })
+  ]
+});
+
+describe('idraw: useHistory ', () => {
+  beforeEach(() => {
+    jest.useFakeTimers().setSystemTime(new Date('2025-01-01'));
+  });
+
+  test('updateElement', () => {
+    const data = createData();
+    const div = document.createElement('div') as HTMLDivElement;
+
+    const idraw = new iDraw(div, {
+      height: 200,
+      width: 200
+    });
+    const { MiddlewareHistory, history } = useHistory({ instance: idraw });
+    const { undo, redo, __getDoRecords, __getUndoRecords } = history;
+    idraw.use(MiddlewareHistory);
+    idraw.setData(data);
+
+    const position = [1, 2];
+    const nextPosition = [1, 3];
+
+    // modify 1: do
+    const deletedElem1 = deepClone(findElementFromListByPosition(position, data.elements) as Element);
+    const expectedElem1 = deepClone(findElementFromListByPosition(nextPosition, data.elements) as Element);
+    idraw.deleteElement(deletedElem1?.uuid);
+    const record1 = {
+      type: 'deleteElement',
+      time: new Date().getTime(),
+      content: {
+        method: 'deleteElement',
+        uuid: deletedElem1.uuid,
+        position: [...position],
+        element: deepClone(deletedElem1)
+      }
+    };
+    expect(findElementFromListByPosition(position, idraw.getData()?.elements || [])).toStrictEqual(expectedElem1);
+    expect(__getDoRecords()).toStrictEqual([record1]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+
+    // modify 2: do
+    const deletedElem2 = deepClone(findElementFromListByPosition(position, data.elements) as Element);
+    const expectedElem2 = deepClone(findElementFromListByPosition(nextPosition, data.elements) as Element);
+    idraw.deleteElement(deletedElem2?.uuid);
+    const record2 = {
+      type: 'deleteElement',
+      time: new Date().getTime(),
+      content: {
+        method: 'deleteElement',
+        uuid: deletedElem2.uuid,
+        position: [...position],
+        element: deepClone(deletedElem2)
+      }
+    };
+    expect(findElementFromListByPosition(position, idraw.getData()?.elements || [])).toStrictEqual(expectedElem2);
+    expect(__getDoRecords()).toStrictEqual([record1, record2]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+
+    // modify 3: undo
+    undo();
+    const record3 = {
+      type: 'undo',
+      time: new Date().getTime(),
+      content: {
+        method: 'addElement',
+        uuid: record2.content.uuid,
+        position: deepClone(record2.content.position),
+        element: deepClone(record2.content.element)
+      }
+    };
+    expect(findElementFromListByPosition(position, idraw.getData()?.elements || [])).toStrictEqual(deletedElem2);
+    expect(__getDoRecords()).toStrictEqual([record1]);
+    expect(__getUndoRecords()).toStrictEqual([record3]);
+
+    // modify 4: undo
+    undo();
+    const record4 = {
+      type: 'undo',
+      time: new Date().getTime(),
+      content: {
+        method: 'addElement',
+        uuid: record1.content.uuid,
+        position: deepClone(record1.content.position),
+        element: deepClone(record1.content.element)
+      }
+    };
+    expect(findElementFromListByPosition(position, idraw.getData()?.elements || [])).toStrictEqual(deletedElem1);
+    expect(__getDoRecords()).toStrictEqual([]);
+    expect(__getUndoRecords()).toStrictEqual([record3, record4]);
+
+    // modify 5: redo
+    redo();
+    const record5 = {
+      type: 'redo',
+      time: new Date().getTime(),
+      content: {
+        method: 'deleteElement',
+        uuid: record4.content.uuid,
+        position: record4.content.position,
+        element: deepClone(record4.content.element)
+      }
+    };
+    expect(findElementFromListByPosition(position, idraw.getData()?.elements || [])).toStrictEqual(expectedElem1);
+    expect(__getDoRecords()).toStrictEqual([record5]);
+    expect(__getUndoRecords()).toStrictEqual([record3]);
+
+    // modify 5: redo
+    redo();
+    const record6 = {
+      type: 'redo',
+      time: new Date().getTime(),
+      content: {
+        method: 'deleteElement',
+        uuid: record3.content.uuid,
+        position: record3.content.position,
+        element: deepClone(record3.content.element)
+      }
+    };
+    expect(findElementFromListByPosition(position, idraw.getData()?.elements || [])).toStrictEqual(expectedElem2);
+    expect(__getDoRecords()).toStrictEqual([record5, record6]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+  });
+});
diff --git a/packages/idraw/__tests__/history-modifyElement.test.ts b/packages/idraw/__tests__/history-modifyElement.test.ts
new file mode 100644
index 0000000..0188da2
--- /dev/null
+++ b/packages/idraw/__tests__/history-modifyElement.test.ts
@@ -0,0 +1,204 @@
+import { iDraw, useHistory, deepClone, createElement, set, get, toFlattenElement } from 'idraw';
+import type { RecursivePartial, Element } from 'idraw';
+
+const createData = () => ({
+  elements: [
+    createElement('rect', {
+      uuid: 'test-001',
+      x: 0,
+      y: 0,
+      w: 100,
+      h: 100,
+      detail: {
+        background: '#DDDDDD'
+      }
+    }),
+    createElement('circle', { uuid: 'test-002' }),
+    createElement('text', {
+      uuid: 'test-003',
+      detail: {
+        text: 'Hello World'
+      }
+    }),
+    createElement('image', { uuid: 'test-004', detail: { src: 'https://example.com/001.png' } }),
+    createElement('group', {
+      uuid: 'test-005',
+      detail: {
+        children: [
+          createElement('rect', { uuid: 'test-006' }),
+          createElement('circle', { uuid: 'test-007' }),
+          createElement('text', {
+            uuid: 'test-008',
+            detail: {
+              text: 'Text in Group'
+            }
+          }),
+          createElement('image', { uuid: 'test-009', detail: { src: 'https://example.com/002.png' } })
+        ]
+      }
+    })
+  ]
+});
+
+describe('idraw: useHistory ', () => {
+  beforeEach(() => {
+    jest.useFakeTimers().setSystemTime(new Date('2025-01-01'));
+  });
+
+  test('modifyElement', () => {
+    const data = createData();
+    const div = document.createElement('div') as HTMLDivElement;
+
+    const idraw = new iDraw(div, {
+      height: 200,
+      width: 200
+    });
+    const { MiddlewareHistory, history } = useHistory({ instance: idraw });
+    const { undo, redo, __getDoRecords, __getUndoRecords } = history;
+    idraw.use(MiddlewareHistory);
+    idraw.setData(data);
+    const targetElement = deepClone(data.elements[0]);
+
+    // modify 1: do
+    const modifiedInfo1 = {
+      x: targetElement.x + 1,
+      y: targetElement.y + 2,
+      detail: {
+        background: '#123456',
+        borderRadius: 3
+      }
+    };
+    idraw.modifyElement({
+      uuid: targetElement.uuid,
+      ...deepClone(modifiedInfo1)
+    });
+    const expectedData1 = createData();
+    const flattenModifiedInfo1 = toFlattenElement(modifiedInfo1);
+    const beforeInfo1: Record<string, any> = {};
+    const afterInfo1 = { ...flattenModifiedInfo1 };
+    Object.keys(flattenModifiedInfo1).forEach((key) => {
+      beforeInfo1[key] = get(expectedData1.elements[0], key);
+      set(expectedData1.elements[0], key, flattenModifiedInfo1[key]);
+    });
+    const record1 = {
+      type: 'modifyElement',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyElement',
+        uuid: targetElement.uuid,
+        before: beforeInfo1,
+        after: afterInfo1
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData1);
+    expect(__getDoRecords()).toStrictEqual([record1]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+
+    // modify 2: do
+    const modifiedInfo2 = {
+      x: modifiedInfo1.x + 3,
+      y: modifiedInfo1.y + 4,
+      detail: {
+        borderRadius: [2, 4, 6, 8]
+      }
+    } as unknown as RecursivePartial<Omit<Element, 'uuid'>>;
+
+    idraw.modifyElement({
+      uuid: targetElement.uuid,
+      ...deepClone(modifiedInfo2)
+    } as RecursivePartial<Omit<Element, 'uuid'>> & Pick<Element, 'uuid'>);
+
+    const expectedData2 = deepClone(expectedData1);
+    const flattenModifiedInfo2 = toFlattenElement(modifiedInfo2);
+    const beforeInfo2: Record<string, any> = {};
+    const afterInfo2 = { ...flattenModifiedInfo2 };
+
+    Object.keys(flattenModifiedInfo2).forEach((key) => {
+      let beforeVal = get(expectedData1.elements[0], key);
+      let beforeKey = key;
+      if (beforeVal === undefined && /(borderRadius|borderWidth)\[[0-9]{1,}\]$/.test(beforeKey)) {
+        beforeKey = beforeKey.replace(/\[[0-9]{1,}\]$/, '');
+        beforeVal = get(expectedData1.elements[0], beforeKey);
+      }
+      beforeInfo2[beforeKey] = beforeVal;
+      set(expectedData2.elements[0], key, flattenModifiedInfo2[key]);
+    });
+    const record2 = {
+      type: 'modifyElement',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyElement',
+        uuid: targetElement.uuid,
+        before: beforeInfo2,
+        after: afterInfo2
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData2);
+    expect(__getDoRecords()).toStrictEqual([record1, record2]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+
+    // modify 3: undo
+    undo();
+    const record3 = {
+      type: 'undo',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyElement',
+        uuid: targetElement.uuid,
+        before: deepClone(record2.content.after),
+        after: deepClone(record2.content.before)
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData1);
+    expect(__getDoRecords()).toStrictEqual([record1]);
+    expect(__getUndoRecords()).toStrictEqual([record3]);
+
+    // modify 4: undo
+    undo();
+    const record4 = {
+      type: 'undo',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyElement',
+        uuid: targetElement.uuid,
+        before: deepClone(record1.content.after),
+        after: deepClone(record1.content.before)
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(createData());
+    expect(__getDoRecords()).toStrictEqual([]);
+    expect(__getUndoRecords()).toStrictEqual([record3, record4]);
+
+    // modify 5: redo
+    redo();
+    const record5 = {
+      type: 'redo',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyElement',
+        uuid: targetElement.uuid,
+        before: deepClone(record4.content.after),
+        after: deepClone(record4.content.before)
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData1);
+    expect(__getDoRecords()).toStrictEqual([record5]);
+    expect(__getUndoRecords()).toStrictEqual([record3]);
+
+    // modify 5: redo
+    redo();
+    const record6 = {
+      type: 'redo',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyElement',
+        uuid: targetElement.uuid,
+        before: deepClone(record3.content.after),
+        after: deepClone(record3.content.before)
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData2);
+    expect(__getDoRecords()).toStrictEqual([record5, record6]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+  });
+});
diff --git a/packages/idraw/__tests__/history-modifyGlobal.test.ts b/packages/idraw/__tests__/history-modifyGlobal.test.ts
new file mode 100644
index 0000000..e7dfedc
--- /dev/null
+++ b/packages/idraw/__tests__/history-modifyGlobal.test.ts
@@ -0,0 +1,180 @@
+import { iDraw, useHistory, deepClone, createElement, set, get, toFlattenGlobal } from 'idraw';
+import type { Data, DataGlobal, RecursivePartial } from 'idraw';
+
+const createData = () =>
+  ({
+    elements: [
+      createElement('rect', {
+        uuid: 'test-001',
+        x: 0,
+        y: 0,
+        w: 100,
+        h: 100,
+        detail: {
+          background: '#DDDDDD'
+        }
+      }),
+      createElement('circle', { uuid: 'test-002' }),
+      createElement('text', {
+        uuid: 'test-003',
+        detail: {
+          text: 'Hello World'
+        }
+      }),
+      createElement('image', { uuid: 'test-004', detail: { src: 'https://example.com/001.png' } }),
+      createElement('group', {
+        uuid: 'test-005',
+        detail: {
+          children: [
+            createElement('rect', { uuid: 'test-006' }),
+            createElement('circle', { uuid: 'test-007' }),
+            createElement('text', {
+              uuid: 'test-008',
+              detail: {
+                text: 'Text in Group'
+              }
+            }),
+            createElement('image', { uuid: 'test-009', detail: { src: 'https://example.com/002.png' } })
+          ]
+        }
+      })
+    ]
+  } as Data);
+
+describe('idraw: useHistory ', () => {
+  beforeEach(() => {
+    jest.useFakeTimers().setSystemTime(new Date('2025-01-01'));
+  });
+
+  test('modifyGlobal', () => {
+    const data = createData();
+    const div = document.createElement('div') as HTMLDivElement;
+
+    const idraw = new iDraw(div, {
+      height: 200,
+      width: 200
+    });
+    const { MiddlewareHistory, history } = useHistory({ instance: idraw });
+    const { undo, redo, __getDoRecords, __getUndoRecords } = history;
+    idraw.use(MiddlewareHistory);
+    idraw.setData(data);
+
+    // modify 1: do
+    const modifiedInfo1 = {
+      background: '#123456'
+    };
+    idraw.modifyGlobal({
+      ...deepClone(modifiedInfo1)
+    });
+    const expectedData1 = createData();
+    const flattenModifiedInfo1 = toFlattenGlobal(modifiedInfo1);
+    const beforeInfo1: Record<string, any> | null = null;
+    const afterInfo1 = { ...flattenModifiedInfo1 };
+
+    Object.keys(flattenModifiedInfo1).forEach((k) => {
+      const key = `global.${k}`;
+      set(expectedData1, key, flattenModifiedInfo1[k]);
+    });
+    const record1 = {
+      type: 'modifyGlobal',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyGlobal',
+        before: beforeInfo1,
+        after: afterInfo1
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData1);
+    expect(__getDoRecords()).toStrictEqual([record1]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+
+    // modify 2: do
+    const modifiedInfo2 = {
+      background: '#AAAAAA'
+    } as unknown as RecursivePartial<DataGlobal>;
+
+    idraw.modifyGlobal({ ...modifiedInfo2 });
+
+    const expectedData2 = deepClone(expectedData1);
+    const flattenModifiedInfo2 = toFlattenGlobal(modifiedInfo2);
+    const beforeInfo2: Record<string, any> = {};
+    const afterInfo2 = { ...flattenModifiedInfo2 };
+
+    Object.keys(flattenModifiedInfo2).forEach((key) => {
+      beforeInfo2[key] = get(expectedData1.global, key);
+      set(expectedData2.global, key, flattenModifiedInfo2[key]);
+    });
+    const record2 = {
+      type: 'modifyGlobal',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyGlobal',
+        before: beforeInfo2,
+        after: afterInfo2
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData2);
+    expect(__getDoRecords()).toStrictEqual([record1, record2]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+
+    // modify 3: undo
+    undo();
+    const record3 = {
+      type: 'undo',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyGlobal',
+        before: deepClone(record2.content.after),
+        after: deepClone(record2.content.before)
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData1);
+    expect(__getDoRecords()).toStrictEqual([record1]);
+    expect(__getUndoRecords()).toStrictEqual([record3]);
+
+    // modify 4: undo
+    undo();
+    const record4 = {
+      type: 'undo',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyGlobal',
+        before: deepClone(record1.content.after),
+        after: deepClone(record1.content.before)
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(createData());
+    expect(__getDoRecords()).toStrictEqual([]);
+    expect(__getUndoRecords()).toStrictEqual([record3, record4]);
+
+    // modify 5: redo
+    redo();
+    const record5 = {
+      type: 'redo',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyGlobal',
+        before: deepClone(record4.content.after),
+        after: deepClone(record4.content.before)
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData1);
+    expect(__getDoRecords()).toStrictEqual([record5]);
+    expect(__getUndoRecords()).toStrictEqual([record3]);
+
+    // modify 5: redo
+    redo();
+    const record6 = {
+      type: 'redo',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyGlobal',
+        before: deepClone(record3.content.after),
+        after: deepClone(record3.content.before)
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData2);
+    expect(__getDoRecords()).toStrictEqual([record5, record6]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+  });
+});
diff --git a/packages/idraw/__tests__/history-modifyLayout.test.ts b/packages/idraw/__tests__/history-modifyLayout.test.ts
new file mode 100644
index 0000000..4cd88ad
--- /dev/null
+++ b/packages/idraw/__tests__/history-modifyLayout.test.ts
@@ -0,0 +1,197 @@
+import { iDraw, useHistory, deepClone, createElement, set, get, toFlattenLayout } from 'idraw';
+import type { Data, DataLayout, RecursivePartial } from 'idraw';
+
+const createData = () =>
+  ({
+    elements: [
+      createElement('rect', {
+        uuid: 'test-001',
+        x: 0,
+        y: 0,
+        w: 100,
+        h: 100,
+        detail: {
+          background: '#DDDDDD'
+        }
+      }),
+      createElement('circle', { uuid: 'test-002' }),
+      createElement('text', {
+        uuid: 'test-003',
+        detail: {
+          text: 'Hello World'
+        }
+      }),
+      createElement('image', { uuid: 'test-004', detail: { src: 'https://example.com/001.png' } }),
+      createElement('group', {
+        uuid: 'test-005',
+        detail: {
+          children: [
+            createElement('rect', { uuid: 'test-006' }),
+            createElement('circle', { uuid: 'test-007' }),
+            createElement('text', {
+              uuid: 'test-008',
+              detail: {
+                text: 'Text in Group'
+              }
+            }),
+            createElement('image', { uuid: 'test-009', detail: { src: 'https://example.com/002.png' } })
+          ]
+        }
+      })
+    ]
+  } as Data);
+
+describe('idraw: useHistory ', () => {
+  beforeEach(() => {
+    jest.useFakeTimers().setSystemTime(new Date('2025-01-01'));
+  });
+
+  test('modifyLayout', () => {
+    const data = createData();
+    const div = document.createElement('div') as HTMLDivElement;
+
+    const idraw = new iDraw(div, {
+      height: 200,
+      width: 200
+    });
+    const { MiddlewareHistory, history } = useHistory({ instance: idraw });
+    const { undo, redo, __getDoRecords, __getUndoRecords } = history;
+    idraw.use(MiddlewareHistory);
+    idraw.setData(data);
+
+    // modify 1: do
+    const modifiedInfo1 = {
+      x: 1,
+      y: 2,
+      w: 100,
+      h: 200,
+      detail: {
+        background: '#123456',
+        borderRadius: 3
+      }
+    };
+    idraw.modifyLayout({
+      ...deepClone(modifiedInfo1)
+    });
+    const expectedData1 = createData();
+    const flattenModifiedInfo1 = toFlattenLayout(modifiedInfo1);
+    const beforeInfo1: Record<string, any> | null = null;
+    const afterInfo1 = { ...flattenModifiedInfo1 };
+
+    Object.keys(flattenModifiedInfo1).forEach((k) => {
+      const key = `layout.${k}`;
+      set(expectedData1, key, flattenModifiedInfo1[k]);
+    });
+    const record1 = {
+      type: 'modifyLayout',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyLayout',
+        before: beforeInfo1,
+        after: afterInfo1
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData1);
+    expect(__getDoRecords()).toStrictEqual([record1]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+
+    // modify 2: do
+    const modifiedInfo2 = {
+      x: modifiedInfo1.x + 3,
+      y: modifiedInfo1.y + 4,
+      detail: {
+        borderRadius: [2, 4, 6, 8]
+      }
+    } as unknown as RecursivePartial<DataLayout>;
+
+    idraw.modifyLayout({ ...modifiedInfo2 });
+
+    const expectedData2 = deepClone(expectedData1);
+    const flattenModifiedInfo2 = toFlattenLayout(modifiedInfo2);
+    const beforeInfo2: Record<string, any> = {};
+    const afterInfo2 = { ...flattenModifiedInfo2 };
+
+    Object.keys(flattenModifiedInfo2).forEach((key) => {
+      let beforeVal = get(expectedData1.layout, key);
+      let beforeKey = key;
+      if (beforeVal === undefined && /(borderRadius|borderWidth)\[[0-9]{1,}\]$/.test(beforeKey)) {
+        beforeKey = beforeKey.replace(/\[[0-9]{1,}\]$/, '');
+        beforeVal = get(expectedData1.layout, beforeKey);
+      }
+      beforeInfo2[beforeKey] = beforeVal;
+      set(expectedData2.layout, key, flattenModifiedInfo2[key]);
+    });
+    const record2 = {
+      type: 'modifyLayout',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyLayout',
+        before: beforeInfo2,
+        after: afterInfo2
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData2);
+    expect(__getDoRecords()).toStrictEqual([record1, record2]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+
+    // modify 3: undo
+    undo();
+    const record3 = {
+      type: 'undo',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyLayout',
+        before: deepClone(record2.content.after),
+        after: deepClone(record2.content.before)
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData1);
+    expect(__getDoRecords()).toStrictEqual([record1]);
+    expect(__getUndoRecords()).toStrictEqual([record3]);
+
+    // modify 4: undo
+    undo();
+    const record4 = {
+      type: 'undo',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyLayout',
+        before: deepClone(record1.content.after),
+        after: deepClone(record1.content.before)
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(createData());
+    expect(__getDoRecords()).toStrictEqual([]);
+    expect(__getUndoRecords()).toStrictEqual([record3, record4]);
+
+    // modify 5: redo
+    redo();
+    const record5 = {
+      type: 'redo',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyLayout',
+        before: deepClone(record4.content.after),
+        after: deepClone(record4.content.before)
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData1);
+    expect(__getDoRecords()).toStrictEqual([record5]);
+    expect(__getUndoRecords()).toStrictEqual([record3]);
+
+    // modify 5: redo
+    redo();
+    const record6 = {
+      type: 'redo',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyLayout',
+        before: deepClone(record3.content.after),
+        after: deepClone(record3.content.before)
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData2);
+    expect(__getDoRecords()).toStrictEqual([record5, record6]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+  });
+});
diff --git a/packages/idraw/__tests__/history-moveElement.test.ts b/packages/idraw/__tests__/history-moveElement.test.ts
new file mode 100644
index 0000000..5f9a848
--- /dev/null
+++ b/packages/idraw/__tests__/history-moveElement.test.ts
@@ -0,0 +1,315 @@
+import { iDraw, useHistory, findElementFromListByPosition, calcResultMovePosition } from 'idraw';
+import type { Elements } from 'idraw';
+
+const getElemBase = () => {
+  return {
+    x: 0,
+    y: 0,
+    w: 1,
+    h: 1
+  };
+};
+
+function generateElements(list: any[]): Elements {
+  const elements: Elements = list.map((item) => {
+    if (Array.isArray(item)) {
+      const groupIds = item[0].split('-');
+      groupIds.pop();
+      return {
+        ...getElemBase(),
+        uuid: groupIds.join('-'),
+        type: 'group',
+        detail: {
+          children: generateElements(item)
+        }
+      };
+    } else {
+      return {
+        ...getElemBase(),
+        uuid: item,
+        type: 'rect',
+        detail: {}
+      };
+    }
+  }) as Elements;
+  return elements;
+}
+
+const createData = (list: any[]) => ({
+  elements: generateElements(list)
+});
+
+describe('idraw: useHistory ', () => {
+  beforeEach(() => {
+    jest.useFakeTimers().setSystemTime(new Date('2025-01-01'));
+  });
+
+  test('moveElement', () => {
+    const getList1 = () => ['0', '1', '2', ['3-0', '3-1', ['3-2-0', '3-2-1', '3-2-2', '3-2-3'], '3-3'], '4', '5'];
+    const data = createData(getList1());
+    const div = document.createElement('div') as HTMLDivElement;
+
+    const idraw = new iDraw(div, {
+      height: 200,
+      width: 200
+    });
+    const { MiddlewareHistory, history } = useHistory({ instance: idraw });
+    const { undo, redo, __getDoRecords, __getUndoRecords } = history;
+    idraw.use(MiddlewareHistory);
+    idraw.setData(data);
+
+    // modify 1: do
+    const from1 = [3, 2, 1];
+    const to1 = [2];
+    // result from: [ 4, 2, 1 ], to: [ 2 ]
+    const uuid1 = findElementFromListByPosition(from1, data.elements)?.uuid as string;
+    idraw.moveElement(uuid1, to1);
+
+    const record1 = {
+      type: 'moveElement',
+      time: new Date().getTime(),
+      content: {
+        method: 'moveElement',
+        uuid: uuid1,
+        from: [...from1],
+        to: [...to1]
+      }
+    };
+
+    // ['0', '1', '3-2-1', '2', ['3-0', '3-1', ['3-2-0', '3-2-2', '3-2-3'], '3-3'], '4', '5'];
+    const expectedElements1 = generateElements([
+      '0',
+      '1',
+      '3-2-1',
+      '2',
+      ['3-0', '3-1', ['3-2-0', '3-2-2', '3-2-3'], '3-3'],
+      '4',
+      '5'
+    ]);
+    // const expectedElements1 = moveElementPosition(generateElements(getList1()), {
+    //   from: [...from1],
+    //   to: [...to1]
+    // }).elements;
+
+    expect(idraw.getData()?.elements).toStrictEqual(expectedElements1);
+    expect(__getDoRecords()).toStrictEqual([record1]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+
+    // modify 2: do
+    const from2 = [2];
+    const to2 = [4];
+    const uuid2 = findElementFromListByPosition(from2, data.elements)?.uuid as string;
+    // console.log('uuid2 ----- ', uuid2, findElementFromListByPosition(to2, data.elements)?.uuid);
+    idraw.moveElement(uuid1, to2);
+    const record2 = {
+      type: 'moveElement',
+      time: new Date().getTime(),
+      content: {
+        method: 'moveElement',
+        uuid: uuid2,
+        from: [...from2],
+        to: [...to2]
+      }
+    };
+    const expectedElements2 = generateElements([
+      '0',
+      '1',
+      '2',
+      '3-2-1',
+      ['3-0', '3-1', ['3-2-0', '3-2-2', '3-2-3'], '3-3'],
+      '4',
+      '5'
+    ]);
+    // const expectedElements2 = moveElementPosition(expectedElements1, {
+    //   from: [...from2],
+    //   to: [...to2]
+    // }).elements;
+    expect(idraw.getData()?.elements).toStrictEqual(expectedElements2);
+    expect(__getDoRecords()).toStrictEqual([record1, record2]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+
+    // modify 3: undo
+    undo();
+    const moveResult2 = calcResultMovePosition({
+      from: [...from2],
+      to: [...to2]
+    }) as { from: number[]; to: number[] };
+    const record3 = {
+      type: 'undo',
+      time: new Date().getTime(),
+      content: {
+        method: 'moveElement',
+        uuid: record2.content.uuid,
+        from: [...moveResult2.to],
+        to: [...moveResult2.from]
+      }
+    };
+    const expectedElements3 = generateElements([
+      '0',
+      '1',
+      '3-2-1',
+      '2',
+      ['3-0', '3-1', ['3-2-0', '3-2-2', '3-2-3'], '3-3'],
+      '4',
+      '5'
+    ]);
+    // const expectedElements3 = moveElementPosition(expectedElements1, {
+    //   from: [...moveResult2.to],
+    //   to: [...moveResult2.from]
+    // }).elements;
+    expect(idraw.getData()?.elements).toStrictEqual(expectedElements3);
+    expect(__getDoRecords()).toStrictEqual([record1]);
+    expect(__getUndoRecords()).toStrictEqual([record3]);
+
+    // modify 4: undo
+    undo();
+    const moveResult3 = calcResultMovePosition({
+      from: [...from1],
+      to: [...to1]
+    }) as { from: number[]; to: number[] };
+    const record4 = {
+      type: 'undo',
+      time: new Date().getTime(),
+      content: {
+        method: 'moveElement',
+        uuid: record1.content.uuid,
+        from: [...moveResult3.to],
+        to: [...moveResult3.from]
+      }
+    };
+    const expectedElements4 = generateElements([
+      '0',
+      '1',
+      '2',
+      ['3-0', '3-1', ['3-2-0', '3-2-1', '3-2-2', '3-2-3'], '3-3'],
+      '4',
+      '5'
+    ]);
+    // const expectedElements4 = moveElementPosition(expectedElements3, {
+    //   from: [...moveResult3.to],
+    //   to: [...moveResult3.from]
+    // }).elements;
+    expect(idraw.getData()?.elements).toStrictEqual(expectedElements4);
+    expect(__getDoRecords()).toStrictEqual([]);
+    expect(__getUndoRecords()).toStrictEqual([record3, record4]);
+
+    // modify 5: redo
+    redo();
+    const moveResult4 = calcResultMovePosition({
+      from: [...record4.content.from],
+      to: [...record4.content.to]
+    }) as { from: number[]; to: number[] };
+    const record5 = {
+      type: 'redo',
+      time: new Date().getTime(),
+      content: {
+        method: 'moveElement',
+        uuid: record4.content.uuid,
+        from: [...moveResult4.to],
+        to: [...moveResult4.from]
+      }
+    };
+    const expectedElements5 = generateElements([
+      '0',
+      '1',
+      '3-2-1',
+      '2',
+      ['3-0', '3-1', ['3-2-0', '3-2-2', '3-2-3'], '3-3'],
+      '4',
+      '5'
+    ]);
+    // const expectedElements5 = moveElementPosition(expectedElements3, {
+    //   from: [...moveResult4.from],
+    //   to: [...moveResult4.to]
+    // }).elements;
+    expect(idraw.getData()?.elements).toStrictEqual(expectedElements5);
+    expect(__getDoRecords()).toStrictEqual([record5]);
+    expect(__getUndoRecords()).toStrictEqual([record3]);
+
+    // modify 6: redo
+    redo();
+    const moveResult5 = calcResultMovePosition({
+      from: [...record3.content.from],
+      to: [...record3.content.to]
+    }) as { from: number[]; to: number[] };
+    const record6 = {
+      type: 'redo',
+      time: new Date().getTime(),
+      content: {
+        method: 'moveElement',
+        uuid: record4.content.uuid,
+        from: [...moveResult5.to],
+        to: [...moveResult5.from]
+      }
+    };
+    const expectedElements6 = generateElements([
+      '0',
+      '1',
+      '2',
+      '3-2-1',
+      ['3-0', '3-1', ['3-2-0', '3-2-2', '3-2-3'], '3-3'],
+      '4',
+      '5'
+    ]);
+    expect(idraw.getData()?.elements).toStrictEqual(expectedElements6);
+    expect(__getDoRecords()).toStrictEqual([record5, record6]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+
+    // modify 7: undo
+    undo();
+    const moveResult6 = calcResultMovePosition({
+      from: [...record6.content.from],
+      to: [...record6.content.to]
+    }) as { from: number[]; to: number[] };
+    const record7 = {
+      type: 'undo',
+      time: new Date().getTime(),
+      content: {
+        method: 'moveElement',
+        uuid: record6.content.uuid,
+        from: [...moveResult6.to],
+        to: [...moveResult6.from]
+      }
+    };
+    const expectedElements7 = generateElements([
+      '0',
+      '1',
+      '3-2-1',
+      '2',
+      ['3-0', '3-1', ['3-2-0', '3-2-2', '3-2-3'], '3-3'],
+      '4',
+      '5'
+    ]);
+    expect(idraw.getData()?.elements).toStrictEqual(expectedElements7);
+    expect(__getDoRecords()).toStrictEqual([record5]);
+    expect(__getUndoRecords()).toStrictEqual([record7]);
+
+    // modify 8: undo
+    undo();
+    const moveResult7 = calcResultMovePosition({
+      from: [...record5.content.from],
+      to: [...record5.content.to]
+    }) as { from: number[]; to: number[] };
+    const record8 = {
+      type: 'undo',
+      time: new Date().getTime(),
+      content: {
+        method: 'moveElement',
+        uuid: record5.content.uuid,
+        from: [...moveResult7.to],
+        to: [...moveResult7.from]
+      }
+    };
+    const expectedElements8 = generateElements([
+      '0',
+      '1',
+      '2',
+      ['3-0', '3-1', ['3-2-0', '3-2-1', '3-2-2', '3-2-3'], '3-3'],
+      '4',
+      '5'
+    ]);
+    expect(idraw.getData()?.elements).toStrictEqual(expectedElements8);
+    expect(__getDoRecords()).toStrictEqual([]);
+    expect(__getUndoRecords()).toStrictEqual([record7, record8]);
+  });
+});
diff --git a/packages/idraw/__tests__/history-updateElement.test.ts b/packages/idraw/__tests__/history-updateElement.test.ts
new file mode 100644
index 0000000..dd3e4de
--- /dev/null
+++ b/packages/idraw/__tests__/history-updateElement.test.ts
@@ -0,0 +1,177 @@
+import { iDraw, useHistory, deepClone, createElement, toFlattenElement, mergeElement } from 'idraw';
+
+const createData = () => ({
+  elements: [
+    createElement('rect', {
+      uuid: 'test-001',
+      x: 0,
+      y: 0,
+      w: 100,
+      h: 100,
+      detail: {
+        background: '#DDDDDD'
+      }
+    }),
+    createElement('circle', { uuid: 'test-002' }),
+    createElement('text', {
+      uuid: 'test-003',
+      detail: {
+        text: 'Hello World'
+      }
+    }),
+    createElement('image', { uuid: 'test-004', detail: { src: 'https://example.com/001.png' } }),
+    createElement('group', {
+      uuid: 'test-005',
+      detail: {
+        children: [
+          createElement('rect', { uuid: 'test-006' }),
+          createElement('circle', { uuid: 'test-007' }),
+          createElement('text', {
+            uuid: 'test-008',
+            detail: {
+              text: 'Text in Group'
+            }
+          }),
+          createElement('image', { uuid: 'test-009', detail: { src: 'https://example.com/002.png' } })
+        ]
+      }
+    })
+  ]
+});
+
+describe('idraw: useHistory ', () => {
+  beforeEach(() => {
+    jest.useFakeTimers().setSystemTime(new Date('2025-01-01'));
+  });
+
+  test('updateElement', () => {
+    const data = createData();
+    const div = document.createElement('div') as HTMLDivElement;
+
+    const idraw = new iDraw(div, {
+      height: 200,
+      width: 200
+    });
+    const { MiddlewareHistory, history } = useHistory({ instance: idraw });
+    const { undo, redo, __getDoRecords, __getUndoRecords } = history;
+    idraw.use(MiddlewareHistory);
+    idraw.setData(data);
+    const targetElement = deepClone(data.elements[0]);
+
+    // modify 1: do
+    const updatedElement1 = deepClone(targetElement);
+    updatedElement1.x += 1;
+    updatedElement1.y += 2;
+    updatedElement1.detail.background = '#123456';
+    updatedElement1.detail.borderRadius = 3;
+    idraw.updateElement(updatedElement1);
+
+    const beforeInfo1: Record<string, any> = toFlattenElement(targetElement);
+    const afterInfo1: Record<string, any> = toFlattenElement(updatedElement1);
+
+    const expectedData1 = createData();
+    mergeElement(expectedData1.elements[0], updatedElement1);
+    const record1 = {
+      type: 'updateElement',
+      time: new Date().getTime(),
+      content: {
+        method: 'updateElement',
+        uuid: targetElement.uuid,
+        before: beforeInfo1,
+        after: afterInfo1
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData1);
+    expect(__getDoRecords()).toStrictEqual([record1]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+
+    // modify 2: do
+    const updatedElement2 = deepClone(updatedElement1);
+    updatedElement2.x += 3;
+    updatedElement2.y += 4;
+    updatedElement2.detail.borderRadius = [2, 4, 6, 8];
+    idraw.updateElement(updatedElement2);
+    const beforeInfo2: Record<string, any> = toFlattenElement(updatedElement1);
+    const afterInfo2: Record<string, any> = toFlattenElement(updatedElement2);
+
+    const expectedData2 = createData();
+    mergeElement(expectedData2.elements[0], updatedElement2);
+    const record2 = {
+      type: 'updateElement',
+      time: new Date().getTime(),
+      content: {
+        method: 'updateElement',
+        uuid: targetElement.uuid,
+        before: beforeInfo2,
+        after: afterInfo2
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData2);
+    expect(__getDoRecords()).toStrictEqual([record1, record2]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+
+    // modify 3: undo
+    undo();
+    const record3 = {
+      type: 'undo',
+      time: new Date().getTime(),
+      content: {
+        method: 'updateElement',
+        uuid: targetElement.uuid,
+        before: deepClone(record2.content.after),
+        after: deepClone(record2.content.before)
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData1);
+    expect(__getDoRecords()).toStrictEqual([record1]);
+    expect(__getUndoRecords()).toStrictEqual([record3]);
+
+    // modify 4: undo
+    undo();
+    const record4 = {
+      type: 'undo',
+      time: new Date().getTime(),
+      content: {
+        method: 'updateElement',
+        uuid: targetElement.uuid,
+        before: deepClone(record1.content.after),
+        after: deepClone(record1.content.before)
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(createData());
+    expect(__getDoRecords()).toStrictEqual([]);
+    expect(__getUndoRecords()).toStrictEqual([record3, record4]);
+
+    // modify 5: redo
+    redo();
+    const record5 = {
+      type: 'redo',
+      time: new Date().getTime(),
+      content: {
+        method: 'updateElement',
+        uuid: targetElement.uuid,
+        before: deepClone(record4.content.after),
+        after: deepClone(record4.content.before)
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData1);
+    expect(__getDoRecords()).toStrictEqual([record5]);
+    expect(__getUndoRecords()).toStrictEqual([record3]);
+
+    // modify 5: redo
+    redo();
+    const record6 = {
+      type: 'redo',
+      time: new Date().getTime(),
+      content: {
+        method: 'updateElement',
+        uuid: targetElement.uuid,
+        before: deepClone(record3.content.after),
+        after: deepClone(record3.content.before)
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData2);
+    expect(__getDoRecords()).toStrictEqual([record5, record6]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+  });
+});
diff --git a/packages/idraw/__tests__/history.test.ts b/packages/idraw/__tests__/history.test.ts
new file mode 100644
index 0000000..0188da2
--- /dev/null
+++ b/packages/idraw/__tests__/history.test.ts
@@ -0,0 +1,204 @@
+import { iDraw, useHistory, deepClone, createElement, set, get, toFlattenElement } from 'idraw';
+import type { RecursivePartial, Element } from 'idraw';
+
+const createData = () => ({
+  elements: [
+    createElement('rect', {
+      uuid: 'test-001',
+      x: 0,
+      y: 0,
+      w: 100,
+      h: 100,
+      detail: {
+        background: '#DDDDDD'
+      }
+    }),
+    createElement('circle', { uuid: 'test-002' }),
+    createElement('text', {
+      uuid: 'test-003',
+      detail: {
+        text: 'Hello World'
+      }
+    }),
+    createElement('image', { uuid: 'test-004', detail: { src: 'https://example.com/001.png' } }),
+    createElement('group', {
+      uuid: 'test-005',
+      detail: {
+        children: [
+          createElement('rect', { uuid: 'test-006' }),
+          createElement('circle', { uuid: 'test-007' }),
+          createElement('text', {
+            uuid: 'test-008',
+            detail: {
+              text: 'Text in Group'
+            }
+          }),
+          createElement('image', { uuid: 'test-009', detail: { src: 'https://example.com/002.png' } })
+        ]
+      }
+    })
+  ]
+});
+
+describe('idraw: useHistory ', () => {
+  beforeEach(() => {
+    jest.useFakeTimers().setSystemTime(new Date('2025-01-01'));
+  });
+
+  test('modifyElement', () => {
+    const data = createData();
+    const div = document.createElement('div') as HTMLDivElement;
+
+    const idraw = new iDraw(div, {
+      height: 200,
+      width: 200
+    });
+    const { MiddlewareHistory, history } = useHistory({ instance: idraw });
+    const { undo, redo, __getDoRecords, __getUndoRecords } = history;
+    idraw.use(MiddlewareHistory);
+    idraw.setData(data);
+    const targetElement = deepClone(data.elements[0]);
+
+    // modify 1: do
+    const modifiedInfo1 = {
+      x: targetElement.x + 1,
+      y: targetElement.y + 2,
+      detail: {
+        background: '#123456',
+        borderRadius: 3
+      }
+    };
+    idraw.modifyElement({
+      uuid: targetElement.uuid,
+      ...deepClone(modifiedInfo1)
+    });
+    const expectedData1 = createData();
+    const flattenModifiedInfo1 = toFlattenElement(modifiedInfo1);
+    const beforeInfo1: Record<string, any> = {};
+    const afterInfo1 = { ...flattenModifiedInfo1 };
+    Object.keys(flattenModifiedInfo1).forEach((key) => {
+      beforeInfo1[key] = get(expectedData1.elements[0], key);
+      set(expectedData1.elements[0], key, flattenModifiedInfo1[key]);
+    });
+    const record1 = {
+      type: 'modifyElement',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyElement',
+        uuid: targetElement.uuid,
+        before: beforeInfo1,
+        after: afterInfo1
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData1);
+    expect(__getDoRecords()).toStrictEqual([record1]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+
+    // modify 2: do
+    const modifiedInfo2 = {
+      x: modifiedInfo1.x + 3,
+      y: modifiedInfo1.y + 4,
+      detail: {
+        borderRadius: [2, 4, 6, 8]
+      }
+    } as unknown as RecursivePartial<Omit<Element, 'uuid'>>;
+
+    idraw.modifyElement({
+      uuid: targetElement.uuid,
+      ...deepClone(modifiedInfo2)
+    } as RecursivePartial<Omit<Element, 'uuid'>> & Pick<Element, 'uuid'>);
+
+    const expectedData2 = deepClone(expectedData1);
+    const flattenModifiedInfo2 = toFlattenElement(modifiedInfo2);
+    const beforeInfo2: Record<string, any> = {};
+    const afterInfo2 = { ...flattenModifiedInfo2 };
+
+    Object.keys(flattenModifiedInfo2).forEach((key) => {
+      let beforeVal = get(expectedData1.elements[0], key);
+      let beforeKey = key;
+      if (beforeVal === undefined && /(borderRadius|borderWidth)\[[0-9]{1,}\]$/.test(beforeKey)) {
+        beforeKey = beforeKey.replace(/\[[0-9]{1,}\]$/, '');
+        beforeVal = get(expectedData1.elements[0], beforeKey);
+      }
+      beforeInfo2[beforeKey] = beforeVal;
+      set(expectedData2.elements[0], key, flattenModifiedInfo2[key]);
+    });
+    const record2 = {
+      type: 'modifyElement',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyElement',
+        uuid: targetElement.uuid,
+        before: beforeInfo2,
+        after: afterInfo2
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData2);
+    expect(__getDoRecords()).toStrictEqual([record1, record2]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+
+    // modify 3: undo
+    undo();
+    const record3 = {
+      type: 'undo',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyElement',
+        uuid: targetElement.uuid,
+        before: deepClone(record2.content.after),
+        after: deepClone(record2.content.before)
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData1);
+    expect(__getDoRecords()).toStrictEqual([record1]);
+    expect(__getUndoRecords()).toStrictEqual([record3]);
+
+    // modify 4: undo
+    undo();
+    const record4 = {
+      type: 'undo',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyElement',
+        uuid: targetElement.uuid,
+        before: deepClone(record1.content.after),
+        after: deepClone(record1.content.before)
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(createData());
+    expect(__getDoRecords()).toStrictEqual([]);
+    expect(__getUndoRecords()).toStrictEqual([record3, record4]);
+
+    // modify 5: redo
+    redo();
+    const record5 = {
+      type: 'redo',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyElement',
+        uuid: targetElement.uuid,
+        before: deepClone(record4.content.after),
+        after: deepClone(record4.content.before)
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData1);
+    expect(__getDoRecords()).toStrictEqual([record5]);
+    expect(__getUndoRecords()).toStrictEqual([record3]);
+
+    // modify 5: redo
+    redo();
+    const record6 = {
+      type: 'redo',
+      time: new Date().getTime(),
+      content: {
+        method: 'modifyElement',
+        uuid: targetElement.uuid,
+        before: deepClone(record3.content.after),
+        after: deepClone(record3.content.before)
+      }
+    };
+    expect(idraw.getData()).toStrictEqual(expectedData2);
+    expect(__getDoRecords()).toStrictEqual([record5, record6]);
+    expect(__getUndoRecords()).toStrictEqual([]);
+  });
+});
diff --git a/packages/idraw/__tests__/index.test.ts b/packages/idraw/__tests__/index.test.ts
deleted file mode 100644
index 3d9d907..0000000
--- a/packages/idraw/__tests__/index.test.ts
+++ /dev/null
@@ -1,98 +0,0 @@
-import { requestAnimationFrameMock } from './../../../__tests__/polyfill/requestanimateframe';
-import './../../../__tests__/polyfill/image';
-
-import IDraw from './../src';
-import { getData } from './data';
-
-function delay(time: number): Promise<void> {
-  return new Promise((resolve) => {
-    setTimeout(() => {
-      resolve();
-    }, time);
-  });
-}
-
-describe('idraw', () => {
-  beforeEach(() => {
-    requestAnimationFrameMock.reset();
-  });
-
-  test('context', async () => {
-    document.body.innerHTML = `
-      <div id="mount"></div>
-    `;
-    const opts = {
-      width: 600,
-      height: 400,
-      contextWidth: 600,
-      contextHeight: 400,
-      devicePixelRatio: 4
-    };
-    const mount = document.querySelector('#mount') as HTMLDivElement;
-    const idraw = new IDraw(mount, opts);
-    const data = getData();
-    idraw.setData(data, { triggerChangeEvent: true });
-
-    requestAnimationFrameMock.triggerNextAnimationFrame();
-
-    const originCtx = idraw.$getOriginContext2D();
-    // @ts-ignore;
-    const originCalls = originCtx.__getDrawCalls();
-    expect(originCalls).toMatchSnapshot();
-
-    const displayCtx = idraw.$getDisplayContext2D();
-    // @ts-ignore;
-    const displayCalls = displayCtx.__getDrawCalls();
-    expect(displayCalls).toMatchSnapshot();
-  });
-
-  test('undo/redo', async () => {
-    document.body.innerHTML = `
-      <div id="mount"></div>
-    `;
-    const opts = {
-      width: 600,
-      height: 400,
-      contextWidth: 600,
-      contextHeight: 400,
-      devicePixelRatio: 4
-    };
-    const mount = document.querySelector('#mount') as HTMLDivElement;
-    const idraw = new IDraw(mount, opts);
-    const data = getData();
-    idraw.setData(data, { triggerChangeEvent: true });
-    idraw.moveDownElement('svg-004');
-    idraw.moveDownElement('image-003');
-    await delay(10);
-
-    const undo1 = idraw.undo();
-    expect(undo1.doRecordCount).toBe(2);
-    expect(undo1.data?.elements?.length).toBe(4);
-
-    const undo2 = idraw.undo();
-    expect(undo2.doRecordCount).toBe(1);
-    expect(undo2.data?.elements?.length).toBe(4);
-
-    const redo1 = idraw.redo();
-    expect(redo1.undoRecordCount).toBe(1);
-    expect(redo1.data?.elements?.length).toBe(4);
-
-    idraw.moveDownElement('image-003');
-
-    const redo2 = idraw.redo();
-    expect(redo2.undoRecordCount).toBe(0);
-    expect(redo2.data).toBe(null);
-
-    requestAnimationFrameMock.triggerNextAnimationFrame();
-
-    const originCtx = idraw.$getOriginContext2D();
-    // @ts-ignore;
-    const originCalls = originCtx.__getDrawCalls();
-    expect(originCalls).toMatchSnapshot();
-
-    const displayCtx = idraw.$getDisplayContext2D();
-    // @ts-ignore;
-    const displayCalls = displayCtx.__getDrawCalls();
-    expect(displayCalls).toMatchSnapshot();
-  });
-});
diff --git a/packages/idraw/src/file.ts b/packages/idraw/src/file.ts
index fbf5379..fb76f77 100644
--- a/packages/idraw/src/file.ts
+++ b/packages/idraw/src/file.ts
@@ -25,9 +25,12 @@ export type ExportImageFileResult = {
 export async function exportImageFileBlobURL(opts: ExportImageFileOptions): Promise<ExportImageFileResult> {
   const { data, width, height, devicePixelRatio, viewScaleInfo, viewSizeInfo, loadItemMap } = opts;
   let viewContext: ViewContext2D | null = createOffscreenContext2D({ width, height, devicePixelRatio });
+  let tempContext: ViewContext2D | null = createOffscreenContext2D({ width, height, devicePixelRatio });
+
   // let calculator: Calculator | null = new Calculator({ viewContext });
   let renderer: Renderer | null = new Renderer({
-    viewContext
+    viewContext,
+    tempContext
   });
   renderer.setLoadItemMap(loadItemMap);
   renderer.drawData(data, {
@@ -35,6 +38,7 @@ export async function exportImageFileBlobURL(opts: ExportImageFileOptions): Prom
     viewSizeInfo,
     forceDrawAll: true
   });
+
   let blobURL: string | null = null;
   let offScreenCanvas = viewContext.$getOffscreenCanvas();
   if (offScreenCanvas) {
@@ -44,6 +48,7 @@ export async function exportImageFileBlobURL(opts: ExportImageFileOptions): Prom
 
   offScreenCanvas = null;
   viewContext = null;
+  tempContext = null;
   renderer = null;
 
   return {
diff --git a/packages/idraw/src/idraw.ts b/packages/idraw/src/idraw.ts
index c17bcc8..9218a24 100644
--- a/packages/idraw/src/idraw.ts
+++ b/packages/idraw/src/idraw.ts
@@ -13,35 +13,21 @@ import type {
   RecursivePartial,
   ElementPosition,
   IDrawStorage,
-  DataLayout
+  DataLayout,
+  DataGlobal,
+  Middleware
 } from '@idraw/types';
-import {
-  createElement,
-  insertElementToListByPosition,
-  updateElementInList,
-  deleteElementInList,
-  moveElementPosition,
-  getElementPositionFromList,
-  calcElementListSize,
-  filterCompactData,
-  calcViewCenterContent,
-  calcViewCenter,
-  Store,
-  merge
-} from '@idraw/util';
-import {
-  defaultSettings,
-  defaultOptions,
-  getDefaultStorage,
-  defaultMode,
-  parseStyles,
-  parseSettings
-} from './setting/config';
-import { exportImageFileBlobURL } from './file';
+import { filterCompactData, calcViewCenterContent, calcViewCenter, Store } from '@idraw/util';
+import { defaultSettings, defaultOptions, getDefaultStorage, defaultMode, parseStyles } from './setting/config';
 import type { ExportImageFileBaseOptions, ExportImageFileResult } from './file';
 import type { IDrawEvent } from './event';
-import { changeMode, runMiddlewares } from './setting/mode';
-import { changeStyles } from './setting/style';
+import { changeMode } from './setting/mode';
+import { createElement, updateElement, modifyElement, addElement, deleteElement, moveElement } from './methods/element';
+import { modifyLayout } from './methods/layout';
+import { modifyGlobal } from './methods/global';
+import { reset } from './methods/reset';
+import { setFeature } from './methods/feature';
+import { getImageBlobURL } from './methods/image';
 
 export class iDraw {
   #core: Core<IDrawEvent>;
@@ -67,54 +53,20 @@ export class iDraw {
   }
 
   #setFeature(feat: IDrawFeature, status: boolean) {
-    const store = this.#store;
-    if (['ruler', 'scroll', 'scale', 'info'].includes(feat)) {
-      const map: Record<IDrawFeature | string, keyof Omit<IDrawStorage, 'mode'>> = {
-        ruler: 'enableRuler',
-        scroll: 'enableScroll',
-        scale: 'enableScale',
-        info: 'enableInfo'
-      };
-      store.set(map[feat], !!status);
-      runMiddlewares(this.#core, store);
-      this.#core.refresh();
-    } else if (feat === 'selectInGroup') {
-      this.#core.trigger(coreEventKeys.SELECT_IN_GROUP, {
-        enable: !!status
-      });
-    } else if (feat === 'snapToGrid') {
-      this.#core.trigger(coreEventKeys.SNAP_TO_GRID, {
-        enable: !!status
-      });
-    }
+    return setFeature({ core: this.#core, store: this.#store }, feat, status);
+  }
+
+  use<C extends any = any>(middleware: Middleware<any, any, any>, config?: C) {
+    this.#core.use<C>(middleware, config);
+  }
+
+  disuse(middleware: Middleware<any, any, any>) {
+    this.#core.disuse(middleware);
   }
 
   reset(opts: IDrawSettings) {
-    const core = this.#core;
-    const store = this.#store;
-    const { mode, styles } = parseSettings(opts);
-    let needFresh = false;
-    const newOpts: IDrawSettings = {};
-    store.clear();
-    if (mode) {
-      changeMode(mode, core, store);
-      newOpts.mode = mode;
-      needFresh = true;
-    }
-    if (styles) {
-      changeStyles(styles, core, store);
-      newOpts.styles = styles;
-      needFresh = true;
-    }
-
-    if (needFresh === true) {
-      core.refresh();
-    }
-
-    this.#opts = {
-      ...this.#opts,
-      ...newOpts
-    };
+    const newOpts = reset({ core: this.#core, store: this.#store }, opts);
+    this.#opts = { ...this.#opts, ...newOpts };
   }
 
   setMode(mode: IDrawMode) {
@@ -148,10 +100,7 @@ export class iDraw {
     return data;
   }
 
-  getViewInfo(): {
-    viewSizeInfo: ViewSizeInfo;
-    viewScaleInfo: ViewScaleInfo;
-  } {
+  getViewInfo(): { viewSizeInfo: ViewSizeInfo; viewScaleInfo: ViewScaleInfo } {
     return this.#core.getViewInfo();
   }
 
@@ -212,108 +161,44 @@ export class iDraw {
 
   createElement<T extends ElementType>(
     type: T,
-    opts?: {
-      element?: RecursivePartial<Element<T>>;
-      viewCenter?: boolean;
-    }
+    element: RecursivePartial<Element<T>>,
+    opts?: { viewCenter?: boolean }
   ): Element<T> {
-    const { viewScaleInfo, viewSizeInfo } = this.#core.getViewInfo();
-    return createElement<T>(
-      type,
-      opts?.element || {},
-      opts?.viewCenter === true
-        ? {
-            viewScaleInfo,
-            viewSizeInfo
-          }
-        : undefined
-    );
+    return createElement<T>({ core: this.#core }, type, element, opts);
   }
 
   updateElement(element: Element) {
-    const core = this.#core;
-    const data: Data = core.getData() || { elements: [] };
-    updateElementInList(element.uuid, element, data.elements);
-    core.setData(data);
-    core.refresh();
-    core.trigger(coreEventKeys.CHANGE, { data, type: 'updateElement' });
+    return updateElement({ core: this.#core }, element);
   }
 
-  updateElementName(uuid: string, name: string) {
-    const core = this.#core;
-    const data: Data = core.getData() || { elements: [] };
-    updateElementInList(uuid, { name }, data.elements);
-    core.setData(data);
-    core.trigger(coreEventKeys.CHANGE, { data, type: 'updateElementName' });
+  modifyElement(element: RecursivePartial<Omit<Element, 'uuid'>> & Pick<Element, 'uuid'>) {
+    return modifyElement({ core: this.#core }, element);
   }
 
-  addElement(
-    element: Element,
-    opts?: {
-      position: ElementPosition;
-    }
-  ): Data {
-    const core = this.#core;
-    const data: Data = core.getData() || { elements: [] };
-    if (!opts || !opts?.position?.length) {
-      data.elements.push(element);
-    } else if (opts?.position) {
-      const position = [...(opts?.position || [])];
-      insertElementToListByPosition(element, position, data.elements);
-    }
-    core.setData(data);
-    core.refresh();
-    core.trigger(coreEventKeys.CHANGE, { data, type: 'addElement' });
-    return data;
+  addElement(element: Element, opts?: { position: ElementPosition }): Data {
+    return addElement({ core: this.#core }, element, opts);
   }
 
   deleteElement(uuid: string) {
-    const core = this.#core;
-    const data: Data = core.getData() || { elements: [] };
-    deleteElementInList(uuid, data.elements);
-    core.setData(data);
-    core.refresh();
-    core.trigger(coreEventKeys.CHANGE, { data, type: 'deleteElement' });
+    return deleteElement({ core: this.#core }, uuid);
   }
 
   moveElement(uuid: string, to: ElementPosition) {
-    const core = this.#core;
-    const data: Data = core.getData() || { elements: [] };
-    const from = getElementPositionFromList(uuid, data.elements);
-    const { elements: list } = moveElementPosition(data.elements, { from, to });
-    data.elements = list;
-    core.setData(data);
-    core.refresh();
-    core.trigger(coreEventKeys.CHANGE, { data, type: 'moveElement' });
+    return moveElement({ core: this.#core }, uuid, to);
   }
 
-  updateLayout(layout: Partial<DataLayout>) {
-    const core = this.#core;
-    const data: Data = core.getData() || { elements: [] };
-    data.layout = merge(data.layout || {}, layout) as DataLayout;
-    core.setData(data);
-    core.refresh();
-    core.trigger(coreEventKeys.CHANGE, { data, type: 'updateLayout' });
+  modifyLayout(layout: RecursivePartial<DataLayout> | null) {
+    return modifyLayout({ core: this.#core }, layout);
+  }
+
+  modifyGlobal(global: RecursivePartial<DataGlobal> | null) {
+    return modifyGlobal({ core: this.#core }, global);
   }
 
   async getImageBlobURL(opts?: ExportImageFileBaseOptions): Promise<ExportImageFileResult> {
     const data = this.getData() || { elements: [] };
-    const { devicePixelRatio } = opts || { devicePixelRatio: 1 };
-
-    const outputSize = calcElementListSize(data.elements);
     const { viewSizeInfo } = this.getViewInfo();
-    return await exportImageFileBlobURL({
-      width: outputSize.w,
-      height: outputSize.h,
-      devicePixelRatio,
-      data,
-      viewScaleInfo: { scale: 1, offsetLeft: -outputSize.x, offsetTop: -outputSize.y, offsetBottom: 0, offsetRight: 0 },
-      viewSizeInfo: {
-        ...viewSizeInfo,
-        ...{ devicePixelRatio }
-      },
-      loadItemMap: this.#core.getLoadItemMap()
-    });
+    return await getImageBlobURL({ data, viewSizeInfo, core: this.#core }, opts);
   }
 
   isDestroyed() {
@@ -321,10 +206,8 @@ export class iDraw {
   }
 
   destroy() {
-    const core = this.#core;
-    const store = this.#store;
-    core.destroy();
-    store.destroy();
+    this.#core.destroy();
+    this.#store.destroy();
   }
 
   getViewCenter(): PointSize {
@@ -333,11 +216,15 @@ export class iDraw {
     return pointSize;
   }
 
-  $onBoardWatcherEvents() {
-    this.#core.onBoardWatcherEvents();
-  }
+  // $onBoardWatcherEvents() {
+  //   this.#core.onBoardWatcherEvents();
+  // }
 
-  $offBoardWatcherEvents() {
-    this.#core.offBoardWatcherEvents();
+  // $offBoardWatcherEvents() {
+  //   this.#core.offBoardWatcherEvents();
+  // }
+
+  getCore() {
+    return this.#core;
   }
 }
diff --git a/packages/idraw/src/index.ts b/packages/idraw/src/index.ts
index f69408f..cdef852 100644
--- a/packages/idraw/src/index.ts
+++ b/packages/idraw/src/index.ts
@@ -3,6 +3,7 @@ export {
   Sharer,
   Calculator,
   Core,
+  Board,
   MiddlewareSelector,
   MiddlewareScroller,
   MiddlewareScaler,
@@ -118,15 +119,25 @@ export {
   deepCloneElement,
   calcViewCenterContent,
   calcViewCenter,
-  modifyElement,
   calcElementViewRectInfo,
   calcElementOriginRectInfo,
   flatElementList,
   calcPointMoveElementInGroup,
   merge,
-  omit
+  omit,
+  toFlattenElement,
+  toFlattenGlobal,
+  toFlattenLayout,
+  flatObject,
+  unflatObject,
+  set,
+  get,
+  mergeElement,
+  calcResultMovePosition,
+  calcRevertMovePosition
 } from '@idraw/util';
 export { iDraw } from './idraw';
 export { eventKeys } from './event';
 export type { IDrawEvent, IDrawEventKeys } from './event';
 export type { ExportImageFileResult, ExportImageFileBaseOptions } from './file';
+export { useHistory } from './middlewares/use-history';
diff --git a/packages/idraw/src/methods/element.ts b/packages/idraw/src/methods/element.ts
new file mode 100644
index 0000000..1b1e1a4
--- /dev/null
+++ b/packages/idraw/src/methods/element.ts
@@ -0,0 +1,84 @@
+import type { Data, Element, ElementType, ElementPosition, RecursivePartial } from '@idraw/types';
+import { Core, coreEventKeys } from '@idraw/core';
+import { IDrawEvent } from '../event';
+
+export function createElement<T extends ElementType = ElementType>(
+  depOptions: {
+    core: Core<IDrawEvent>;
+  },
+  type: T,
+  element: RecursivePartial<Element<T>>,
+  opts?: {
+    viewCenter?: boolean;
+  }
+): Element<T> {
+  const { core } = depOptions;
+  return core.createElement<T>(type, element, opts);
+}
+
+export function updateElement(
+  depOptions: {
+    core: Core<IDrawEvent>;
+  },
+  element: Element
+) {
+  const { core } = depOptions;
+
+  const modifyRecord = core.updateElement(element);
+  if (!modifyRecord) {
+    return;
+  }
+  const data = core.getData();
+  if (!data) {
+    return;
+  }
+  core.trigger(coreEventKeys.CHANGE, { data, type: 'updateElement', modifyRecord });
+}
+
+export function modifyElement(
+  depOptions: {
+    core: Core<IDrawEvent>;
+  },
+  element: RecursivePartial<Omit<Element, 'uuid'>> & Pick<Element, 'uuid'>
+) {
+  const { core } = depOptions;
+  const modifyRecord = core.modifyElement(element);
+  if (!modifyRecord) {
+    return;
+  }
+  const data = core.getData();
+  if (!data) {
+    return;
+  }
+  core.trigger(coreEventKeys.CHANGE, { data, type: 'updateElement', modifyRecord });
+}
+
+export function addElement(
+  depOptions: {
+    core: Core<IDrawEvent>;
+  },
+  element: Element,
+  opts?: {
+    position: ElementPosition;
+  }
+): Data {
+  const { core } = depOptions;
+  const modifyRecord = core.addElement(element, opts);
+  const data = core.getData() as Data;
+  core.trigger(coreEventKeys.CHANGE, { data, type: 'addElement', modifyRecord });
+  return data;
+}
+
+export function deleteElement(depOptions: { core: Core<IDrawEvent> }, uuid: string) {
+  const { core } = depOptions;
+  const modifyRecord = core.deleteElement(uuid);
+  const data = core.getData() as Data;
+  core.trigger(coreEventKeys.CHANGE, { data, type: 'deleteElement', modifyRecord });
+}
+
+export function moveElement(depOptions: { core: Core<IDrawEvent> }, uuid: string, to: ElementPosition) {
+  const { core } = depOptions;
+  const modifyRecord = core.moveElement(uuid, to);
+  const data = core.getData() as Data;
+  core.trigger(coreEventKeys.CHANGE, { data, type: 'moveElement', modifyRecord });
+}
diff --git a/packages/idraw/src/methods/feature.ts b/packages/idraw/src/methods/feature.ts
new file mode 100644
index 0000000..ca5d727
--- /dev/null
+++ b/packages/idraw/src/methods/feature.ts
@@ -0,0 +1,32 @@
+import type { IDrawFeature, IDrawStorage } from '@idraw/types';
+import { Core, coreEventKeys } from '@idraw/core';
+import { Store } from '@idraw/util';
+import { IDrawEvent } from '../event';
+import { runMiddlewares } from '../setting/mode';
+
+export function setFeature(
+  depOptions: { core: Core<IDrawEvent>; store: Store<IDrawStorage> },
+  feat: IDrawFeature,
+  status: boolean
+) {
+  const { core, store } = depOptions;
+  if (['ruler', 'scroll', 'scale', 'info'].includes(feat)) {
+    const map: Record<IDrawFeature | string, keyof Omit<IDrawStorage, 'mode'>> = {
+      ruler: 'enableRuler',
+      scroll: 'enableScroll',
+      scale: 'enableScale',
+      info: 'enableInfo'
+    };
+    store.set(map[feat], !!status);
+    runMiddlewares(core, store);
+    core.refresh();
+  } else if (feat === 'selectInGroup') {
+    core.trigger(coreEventKeys.SELECT_IN_GROUP, {
+      enable: !!status
+    });
+  } else if (feat === 'snapToGrid') {
+    core.trigger(coreEventKeys.SNAP_TO_GRID, {
+      enable: !!status
+    });
+  }
+}
diff --git a/packages/idraw/src/methods/global.ts b/packages/idraw/src/methods/global.ts
new file mode 100644
index 0000000..6b9aac5
--- /dev/null
+++ b/packages/idraw/src/methods/global.ts
@@ -0,0 +1,10 @@
+import type { Data, DataGlobal, RecursivePartial } from '@idraw/types';
+import { Core, coreEventKeys } from '@idraw/core';
+import { IDrawEvent } from '../event';
+
+export function modifyGlobal(depOptions: { core: Core<IDrawEvent> }, global: RecursivePartial<DataGlobal> | null) {
+  const { core } = depOptions;
+  const modifyRecord = core.modifyGlobal(global);
+  const data = core.getData() as Data;
+  core.trigger(coreEventKeys.CHANGE, { data, type: 'modifyGlobal', modifyRecord });
+}
diff --git a/packages/idraw/src/methods/image.ts b/packages/idraw/src/methods/image.ts
new file mode 100644
index 0000000..2696ed4
--- /dev/null
+++ b/packages/idraw/src/methods/image.ts
@@ -0,0 +1,29 @@
+import type { Data, ViewSizeInfo } from '@idraw/types';
+import { Core } from '@idraw/core';
+import { calcElementListSize } from '@idraw/util';
+import { IDrawEvent } from '../event';
+import { exportImageFileBlobURL } from '../file';
+import type { ExportImageFileBaseOptions, ExportImageFileResult } from '../file';
+
+export async function getImageBlobURL(
+  depOptions: { data: Data; viewSizeInfo: ViewSizeInfo; core: Core<IDrawEvent> },
+  opts?: ExportImageFileBaseOptions
+): Promise<ExportImageFileResult> {
+  const { data, viewSizeInfo, core } = depOptions;
+  const { devicePixelRatio } = opts || { devicePixelRatio: 1 };
+
+  const outputSize = calcElementListSize(data.elements);
+
+  return await exportImageFileBlobURL({
+    width: outputSize.w,
+    height: outputSize.h,
+    devicePixelRatio,
+    data,
+    viewScaleInfo: { scale: 1, offsetLeft: -outputSize.x, offsetTop: -outputSize.y, offsetBottom: 0, offsetRight: 0 },
+    viewSizeInfo: {
+      ...viewSizeInfo,
+      ...{ devicePixelRatio }
+    },
+    loadItemMap: core.getLoadItemMap()
+  });
+}
diff --git a/packages/idraw/src/methods/layout.ts b/packages/idraw/src/methods/layout.ts
new file mode 100644
index 0000000..5502857
--- /dev/null
+++ b/packages/idraw/src/methods/layout.ts
@@ -0,0 +1,10 @@
+import type { Data, DataLayout, RecursivePartial } from '@idraw/types';
+import { Core, coreEventKeys } from '@idraw/core';
+import { IDrawEvent } from '../event';
+
+export function modifyLayout(depOptions: { core: Core<IDrawEvent> }, layout: RecursivePartial<DataLayout> | null) {
+  const { core } = depOptions;
+  const modifyRecord = core.modifyLayout(layout);
+  const data = core.getData() as Data;
+  core.trigger(coreEventKeys.CHANGE, { data, type: 'modifyLayout', modifyRecord });
+}
diff --git a/packages/idraw/src/methods/reset.ts b/packages/idraw/src/methods/reset.ts
new file mode 100644
index 0000000..8230d74
--- /dev/null
+++ b/packages/idraw/src/methods/reset.ts
@@ -0,0 +1,34 @@
+import type { IDrawSettings, IDrawStorage } from '@idraw/types';
+import { Core } from '@idraw/core';
+import { Store } from '@idraw/util';
+import { IDrawEvent } from '../event';
+import { parseSettings } from '../setting/config';
+import { changeMode } from '../setting/mode';
+import { changeStyles } from '../setting/style';
+
+export function reset(
+  depOptions: { core: Core<IDrawEvent>; store: Store<IDrawStorage> },
+  opts: IDrawSettings
+): IDrawSettings {
+  const { core, store } = depOptions;
+  const { mode, styles } = parseSettings(opts);
+  let needFresh = false;
+  const newOpts: IDrawSettings = {};
+  store.clear();
+  if (mode) {
+    changeMode(mode, core, store);
+    newOpts.mode = mode;
+    needFresh = true;
+  }
+  if (styles) {
+    changeStyles(styles, core, store);
+    newOpts.styles = styles;
+    needFresh = true;
+  }
+
+  if (needFresh === true) {
+    core.refresh();
+  }
+
+  return newOpts;
+}
diff --git a/packages/idraw/src/middlewares/use-history.ts b/packages/idraw/src/middlewares/use-history.ts
new file mode 100644
index 0000000..2d193cc
--- /dev/null
+++ b/packages/idraw/src/middlewares/use-history.ts
@@ -0,0 +1,221 @@
+import type {
+  Middleware,
+  ModifyRecord,
+  Element,
+  DataLayout,
+  RecursivePartial,
+  DataGlobal,
+  IDrawHistory
+} from '@idraw/types';
+import { unflatObject, calcResultMovePosition } from '@idraw/util';
+import type { IDrawEvent } from '../event';
+import { eventKeys } from '../event';
+import type { iDraw } from '../idraw';
+
+const supportRecordTypes = [
+  'updateElement',
+  'modifyElement',
+  'deleteElement',
+  'moveElement',
+  'addElement',
+  'dragElement',
+  'resizeElement',
+  'dragLayout',
+  'modifyLayout',
+  'modifyGlobal'
+];
+
+export const useHistory = (opts: { instance: iDraw }) => {
+  const { instance } = opts;
+  const core = instance.getCore();
+  let doRecords: ModifyRecord[] = [];
+  let undoRecords: ModifyRecord[] = [];
+
+  const doAction = (record: ModifyRecord) => {
+    doRecords.push(record);
+  };
+
+  const undoAction = () => {
+    if (doRecords?.length > 0) {
+      const record = doRecords.pop();
+      if (!record) {
+        return;
+      }
+      let undoRecord: ModifyRecord = { ...record };
+      if (record.content.method === 'modifyElement') {
+        const info = unflatObject(record.content.before || {});
+        undoRecord = core.modifyElement({
+          ...info,
+          uuid: (record as ModifyRecord<'modifyElement'>).content?.uuid
+        }) as ModifyRecord;
+      } else if (record.content.method === 'updateElement') {
+        const info = unflatObject(record.content.before || {}) as Element;
+        undoRecord = core.updateElement({ ...info, uuid: record.content.uuid }) as ModifyRecord;
+      } else if (record.content.method === 'addElement') {
+        const uuid = record.content.uuid;
+        undoRecord = core.deleteElement(uuid) as ModifyRecord;
+      } else if (record.content.method === 'deleteElement') {
+        const { element, position } = record.content;
+        if (!element) {
+          return;
+        }
+        if (!element) {
+          return;
+        }
+        undoRecord = core.addElement(element, { position }) as ModifyRecord;
+      } else if (record.content.method === 'moveElement') {
+        const uuid = record.content.uuid;
+        const moveResult = calcResultMovePosition({
+          from: record.content.from,
+          to: record.content.to
+        });
+        if (!moveResult) {
+          return;
+        }
+        undoRecord = core.moveElement(uuid, moveResult.from) as ModifyRecord;
+      } else if (record.content.method === 'modifyLayout') {
+        const info =
+          record.content.before === null
+            ? null
+            : (unflatObject(record.content.before || {}) as RecursivePartial<DataLayout>);
+        undoRecord = core.modifyLayout(info) as ModifyRecord;
+      } else if (record.content.method === 'modifyGlobal') {
+        const info =
+          record.content.before === null
+            ? null
+            : (unflatObject(record.content.before || {}) as RecursivePartial<DataGlobal>);
+        undoRecord = core.modifyGlobal(info) as ModifyRecord;
+      } else if (record.content.method === 'modifyElements') {
+        undoRecord = core.modifyElements(
+          record.content.before.forEach((item) => unflatObject(item)) as unknown as Array<
+            RecursivePartial<Omit<Element, 'uuid'>> & Pick<Element, 'uuid'>
+          >
+        ) as ModifyRecord;
+      }
+
+      undoRecord = { ...undoRecord, type: 'undo' } as ModifyRecord<'undo'>;
+      undoRecords.push(undoRecord);
+    }
+  };
+
+  const redoAction = () => {
+    if (undoRecords?.length > 0) {
+      const record = undoRecords.pop();
+      if (!record) {
+        return;
+      }
+      let redoRecord: ModifyRecord = { ...record };
+      if (record.content.method === 'modifyElement') {
+        const info = unflatObject(record.content.before || {});
+        redoRecord = core.modifyElement({
+          ...info,
+          uuid: (record as ModifyRecord<'modifyElement'>).content.uuid
+        }) as ModifyRecord;
+      } else if (record.content.method === 'updateElement') {
+        const info = unflatObject(record.content.before || {}) as Element;
+        redoRecord = core.updateElement({ ...info, uuid: record.content.uuid }) as ModifyRecord;
+      } else if (record.content.method === 'addElement') {
+        const uuid = record.content.uuid;
+        redoRecord = core.deleteElement(uuid) as ModifyRecord;
+      } else if (record.content.method === 'deleteElement') {
+        const { element, position } = record.content;
+        if (!element) {
+          return;
+        }
+        redoRecord = core.addElement(element, { position }) as ModifyRecord;
+      } else if (record.content.method === 'moveElement') {
+        const uuid = record.content.uuid;
+        const moveResult = calcResultMovePosition({
+          from: record.content.from,
+          to: record.content.to
+        });
+        if (!moveResult) {
+          return;
+        }
+        redoRecord = core.moveElement(uuid, moveResult.from) as ModifyRecord;
+      } else if (record.content.method === 'modifyLayout') {
+        const info =
+          record.content.before === null
+            ? null
+            : (unflatObject(record.content.before || {}) as RecursivePartial<DataLayout>);
+        redoRecord = core.modifyLayout(info) as ModifyRecord;
+      } else if (record.content.method === 'modifyGlobal') {
+        const info =
+          record.content.before === null
+            ? null
+            : (unflatObject(record.content.before || {}) as RecursivePartial<DataGlobal>);
+        redoRecord = core.modifyGlobal(info) as ModifyRecord;
+      } else if (record.content.method === 'modifyElements') {
+        redoRecord = core.modifyElements(
+          record.content.before.forEach((item) => unflatObject(item)) as unknown as Array<
+            RecursivePartial<Omit<Element, 'uuid'>> & Pick<Element, 'uuid'>
+          >
+        ) as ModifyRecord;
+      }
+      redoRecord = { ...redoRecord, type: 'redo' } as ModifyRecord<'redo'>;
+      doRecords.push(redoRecord);
+    }
+  };
+
+  const MiddlewareHistory: Middleware<any, IDrawEvent> = (opts) => {
+    const { eventHub } = opts;
+    const changeEvent = (e: IDrawEvent['change']) => {
+      const { modifyRecord } = e;
+      if (modifyRecord && supportRecordTypes.includes(modifyRecord?.type)) {
+        doAction(modifyRecord);
+      }
+    };
+
+    const onEvents = () => {
+      eventHub.on(eventKeys.CHANGE, changeEvent);
+    };
+
+    const offEvents = () => {
+      eventHub.off(eventKeys.CHANGE, changeEvent);
+    };
+
+    return {
+      name: '@middleware/history',
+      use() {
+        onEvents();
+      },
+      disuse() {
+        offEvents();
+      }
+    };
+  };
+
+  const destroy = () => {
+    clear();
+    doRecords = null as any;
+    undoRecords = null as any;
+  };
+
+  const clear = () => {
+    while (doRecords?.length > 0) {
+      doRecords.pop();
+    }
+    while (undoRecords?.length > 0) {
+      undoRecords.pop();
+    }
+  };
+
+  const getDoRecords = () => doRecords;
+  const getUndoRecords = () => undoRecords;
+
+  const history: IDrawHistory = {
+    undo: undoAction,
+    redo: redoAction,
+    destroy,
+    clear,
+    canUndo: () => doRecords.length > 0,
+    canRedo: () => undoRecords.length > 0,
+    __getDoRecords: getDoRecords,
+    __getUndoRecords: getUndoRecords
+  };
+
+  return {
+    MiddlewareHistory,
+    history
+  } as const;
+};
diff --git a/packages/idraw/src/setting/config.ts b/packages/idraw/src/setting/config.ts
index b1fb9a0..dd1fa15 100644
--- a/packages/idraw/src/setting/config.ts
+++ b/packages/idraw/src/setting/config.ts
@@ -3,8 +3,9 @@ import { istype } from '@idraw/util';
 
 export const defaultMode: IDrawMode = 'select';
 
-export const defaultSettings: Required<Pick<IDrawSettings, 'mode'>> = {
-  mode: defaultMode
+export const defaultSettings: Required<Pick<IDrawSettings, 'mode' | 'history'>> = {
+  mode: defaultMode,
+  history: false
 };
 
 export const defaultOptions: Required<Pick<IDrawOptions, 'devicePixelRatio'>> = {
diff --git a/packages/idraw/src/setting/mode.ts b/packages/idraw/src/setting/mode.ts
index 1959306..ed16baa 100644
--- a/packages/idraw/src/setting/mode.ts
+++ b/packages/idraw/src/setting/mode.ts
@@ -19,7 +19,8 @@ function isValidMode(mode: string | IDrawMode) {
 }
 
 export function runMiddlewares(core: Core<IDrawEvent>, store: Store<IDrawStorage>) {
-  const { enableRuler, enableScale, enableScroll, enableSelect, enableTextEdit, enableDrag, enableInfo } = store.getSnapshot();
+  const { enableRuler, enableScale, enableScroll, enableSelect, enableTextEdit, enableDrag, enableInfo } =
+    store.getSnapshot();
   const styles = store.get('middlewareStyles');
   if (enableScroll === true) {
     core.use(MiddlewareScroller, styles?.scroller);
diff --git a/packages/renderer/src/calculator.ts b/packages/renderer/src/calculator.ts
index 8015c10..68c4b12 100644
--- a/packages/renderer/src/calculator.ts
+++ b/packages/renderer/src/calculator.ts
@@ -9,7 +9,7 @@ import type {
   ViewSizeInfo,
   VirtualFlatStorage,
   ViewRectInfo,
-  ModifyOptions,
+  ModifyInfo,
   VirtualFlatItem
 } from '@idraw/types';
 import {
@@ -25,6 +25,7 @@ import {
 } from '@idraw/util';
 import { sortElementsViewVisiableInfoMap, updateVirtualFlatItemMapStatus } from './view-visible';
 import { calcVirtualFlatDetail } from './virtual-flat';
+import { calcVirtualTextDetail } from './virtual-flat/text';
 
 export class Calculator implements ViewCalculator {
   #opts: ViewCalculatorOptions;
@@ -169,20 +170,35 @@ export class Calculator implements ViewCalculator {
     return viewRectInfo;
   }
 
+  modifyText(element: Element<'text'>): void {
+    const virtualFlatItemMap = this.#store.get('virtualFlatItemMap');
+    const flatItem = virtualFlatItemMap[element.uuid];
+    if (element && element.type === 'text') {
+      const newVirtualFlatItem: VirtualFlatItem = {
+        ...flatItem,
+        ...calcVirtualTextDetail(element, {
+          tempContext: this.#opts.tempContext
+        })
+      };
+      virtualFlatItemMap[element.uuid] = newVirtualFlatItem;
+      this.#store.set('virtualFlatItemMap', virtualFlatItemMap);
+    }
+  }
+
   modifyVirtualFlatItemMap(
     data: Data,
     opts: {
-      modifyOptions: ModifyOptions; // TODO
+      modifyInfo: ModifyInfo; // TODO
       viewScaleInfo: ViewScaleInfo;
       viewSizeInfo: ViewSizeInfo;
     }
   ): void {
-    const { modifyOptions, viewScaleInfo, viewSizeInfo } = opts;
-    const { type, content } = modifyOptions;
+    const { modifyInfo, viewScaleInfo, viewSizeInfo } = opts;
+    const { type, content } = modifyInfo;
     const list = data.elements;
     const virtualFlatItemMap = this.#store.get('virtualFlatItemMap');
     if (type === 'deleteElement') {
-      const { element } = content as ModifyOptions<'deleteElement'>['content'];
+      const { element } = content as ModifyInfo<'deleteElement'>['content'];
       const uuids: string[] = [];
       const _walk = (e: Element) => {
         uuids.push(e.uuid);
@@ -203,7 +219,7 @@ export class Calculator implements ViewCalculator {
     //   this.resetVirtualFlatItemMap(data, { viewScaleInfo, viewSizeInfo });
     // }
     else if (type === 'addElement' || type === 'updateElement') {
-      const { position } = content as ModifyOptions<'addElement'>['content'];
+      const { position } = content as ModifyInfo<'addElement'>['content'];
       const element = findElementFromListByPosition(position, data.elements);
       const groupQueue = getGroupQueueByElementPosition(list, position);
       if (element) {
diff --git a/packages/renderer/src/draw/box.ts b/packages/renderer/src/draw/box.ts
index 01bda23..5d4647d 100644
--- a/packages/renderer/src/draw/box.ts
+++ b/packages/renderer/src/draw/box.ts
@@ -112,7 +112,7 @@ function drawClipPath(
     ctx.scale(totalScale * scaleW, totalScale * scaleH);
     const pathStr = generateSVGPath(clipPath.commands || []);
     const path2d = new Path2D(pathStr);
-    ctx.clip(path2d);
+    ctx.clip(path2d, 'nonzero');
 
     ctx.translate(0 - (internalX as number), 0 - (internalY as number));
     ctx.setTransform(1, 0, 0, 1, 0, 0);
@@ -236,7 +236,7 @@ export function drawBoxBackground(
         }
       }
     }
-    ctx.fill();
+    ctx.fill('nonzero');
 
     if (transform && transform.length > 0) {
       ctx.setTransform(1, 0, 0, 1, 0, 0);
@@ -322,7 +322,7 @@ export function drawBoxBorder(
   // ctx.quadraticCurveTo(op3.x, op3.y, op3e.x, op3e.y);
   // ctx.lineTo(op0s.x, op0s.y);
   // ctx.closePath();
-  // ctx.fill();
+  // ctx.fill('nonzero');
 
   // ctx.fillStyle = '#000000';
   // ctx.globalCompositeOperation = 'destination-out';
@@ -337,7 +337,7 @@ export function drawBoxBorder(
   // ctx.quadraticCurveTo(ip3.x, ip3.y, ip3e.x, ip3e.y);
   // ctx.lineTo(ip0s.x, ip0s.y);
   // ctx.closePath();
-  // ctx.fill();
+  // ctx.fill('nonzero');
   // ctx.globalCompositeOperation = 'source-over';
   // return;
   // // TODO
diff --git a/packages/renderer/src/draw/circle.ts b/packages/renderer/src/draw/circle.ts
index 90239f4..88df609 100644
--- a/packages/renderer/src/draw/circle.ts
+++ b/packages/renderer/src/draw/circle.ts
@@ -59,7 +59,7 @@ export function drawCircle(ctx: ViewContext2D, elem: Element<'circle'>, opts: Re
           ctx.fillStyle = fillStyle;
           ctx.circle(centerX, centerY, radiusA, radiusB, 0, 0, 2 * Math.PI);
           ctx.closePath();
-          ctx.fill();
+          ctx.fill('nonzero');
           ctx.globalAlpha = parentOpacity;
 
           // draw border
diff --git a/packages/renderer/src/draw/global.ts b/packages/renderer/src/draw/global.ts
index c009ec8..3294104 100644
--- a/packages/renderer/src/draw/global.ts
+++ b/packages/renderer/src/draw/global.ts
@@ -1,6 +1,10 @@
-import type { RendererDrawElementOptions, ViewContext2D, ElementGlobalDetail } from '@idraw/types';
+import type { RendererDrawElementOptions, ViewContext2D, ElementGlobal } from '@idraw/types';
 
-export function drawGlobalBackground(ctx: ViewContext2D, global: ElementGlobalDetail | undefined, opts: RendererDrawElementOptions) {
+export function drawGlobalBackground(
+  ctx: ViewContext2D,
+  global: ElementGlobal | undefined,
+  opts: RendererDrawElementOptions
+) {
   if (typeof global?.background === 'string') {
     const { viewSizeInfo } = opts;
     const { width, height } = viewSizeInfo;
diff --git a/packages/renderer/src/draw/group.ts b/packages/renderer/src/draw/group.ts
index bac066e..65a6cd1 100644
--- a/packages/renderer/src/draw/group.ts
+++ b/packages/renderer/src/draw/group.ts
@@ -110,8 +110,8 @@ export function drawGroup(ctx: ViewContext2D, elem: Element<'group'>, opts: Rend
               ctx.arcTo(x, y + h, x, y, radiusList[3]);
               ctx.arcTo(x, y, x + w, y, radiusList[0]);
               ctx.closePath();
-              ctx.fill();
-              ctx.clip();
+              ctx.fill('nonzero');
+              ctx.clip('nonzero');
             }
 
             if (Array.isArray(elem.detail.children)) {
diff --git a/packages/renderer/src/draw/image.ts b/packages/renderer/src/draw/image.ts
index 533c61c..2a117c8 100644
--- a/packages/renderer/src/draw/image.ts
+++ b/packages/renderer/src/draw/image.ts
@@ -43,8 +43,8 @@ export function drawImage(ctx: ViewContext2D, elem: Element<'image'>, opts: Rend
               ctx.arcTo(x, y + h, x, y, radiusList[3]);
               ctx.arcTo(x, y, x + w, y, radiusList[0]);
               ctx.closePath();
-              ctx.fill();
-              ctx.clip();
+              ctx.fill('nonzero');
+              ctx.clip('nonzero');
 
               if (scaleMode && originH && originW) {
                 let sx = 0;
diff --git a/packages/renderer/src/draw/layout.ts b/packages/renderer/src/draw/layout.ts
index fbe7bb4..73d763c 100644
--- a/packages/renderer/src/draw/layout.ts
+++ b/packages/renderer/src/draw/layout.ts
@@ -41,8 +41,8 @@ export function drawLayout(
     ctx.arcTo(x, y + h, x, y, radiusList[3]);
     ctx.arcTo(x, y, x + w, y, radiusList[0]);
     ctx.closePath();
-    ctx.fill();
-    ctx.clip();
+    ctx.fill('nonzero');
+    ctx.clip('nonzero');
   }
 
   renderContent(ctx);
diff --git a/packages/renderer/src/draw/path.ts b/packages/renderer/src/draw/path.ts
index b7e43fe..ef11a93 100644
--- a/packages/renderer/src/draw/path.ts
+++ b/packages/renderer/src/draw/path.ts
@@ -1,4 +1,10 @@
-import type { Element, RendererDrawElementOptions, ViewContext2D, LinearGradientColor, RadialGradientColor } from '@idraw/types';
+import type {
+  Element,
+  RendererDrawElementOptions,
+  ViewContext2D,
+  LinearGradientColor,
+  RadialGradientColor
+} from '@idraw/types';
 import { rotateElement, generateSVGPath, calcViewElementSize } from '@idraw/util';
 import { drawBox, drawBoxShadow } from './box';
 
@@ -23,7 +29,11 @@ export function drawPath(ctx: ViewContext2D, elem: Element<'path'>, opts: Render
   let boxOriginElem = { ...elem };
   boxOriginElem.detail = restDetail;
 
-  if (detail.fill && detail.fill !== 'string' && (detail.fill as LinearGradientColor | RadialGradientColor)?.type?.includes('gradient')) {
+  if (
+    detail.fill &&
+    detail.fill !== 'string' &&
+    (detail.fill as LinearGradientColor | RadialGradientColor)?.type?.includes('gradient')
+  ) {
     boxViewElem = {
       ...viewElem,
       ...{
@@ -65,7 +75,7 @@ export function drawPath(ctx: ViewContext2D, elem: Element<'path'>, opts: Render
             // ctx.lineTo(viewOriginX + w, viewOriginY + h);
             // ctx.lineTo(viewOriginX, viewOriginY + h);
             // ctx.closePath();
-            // ctx.clip();
+            // ctx.clip('nonzero');
             ctx.scale((scaleNum * scaleW) / viewScaleInfo.scale, (scaleNum * scaleH) / viewScaleInfo.scale);
             const pathStr = generateSVGPath(detail.commands || []);
             const path2d = new Path2D(pathStr);
@@ -79,7 +89,7 @@ export function drawPath(ctx: ViewContext2D, elem: Element<'path'>, opts: Render
             }
 
             if (detail.fill) {
-              ctx.fill(path2d, fillRule as CanvasFillRule);
+              ctx.fill(path2d, (fillRule as CanvasFillRule) || 'nonzero');
             }
 
             if (detail.stroke && detail.strokeWidth !== 0) {
diff --git a/packages/renderer/src/index.ts b/packages/renderer/src/index.ts
index 3b9e0b8..f3d2f52 100644
--- a/packages/renderer/src/index.ts
+++ b/packages/renderer/src/index.ts
@@ -70,6 +70,14 @@ export class Renderer extends EventEmitter<RendererEventMap> implements BoardRen
     //     ...opts
     //   });
     // }
+
+    if (opts.forceDrawAll === true) {
+      this.#calculator.resetVirtualFlatItemMap(data, {
+        viewScaleInfo: opts.viewScaleInfo,
+        viewSizeInfo: opts.viewSizeInfo
+      });
+    }
+
     const drawOpts = {
       loader,
       calculator,
diff --git a/packages/renderer/src/virtual-flat/text.ts b/packages/renderer/src/virtual-flat/text.ts
index 06492fb..d144158 100644
--- a/packages/renderer/src/virtual-flat/text.ts
+++ b/packages/renderer/src/virtual-flat/text.ts
@@ -131,9 +131,9 @@ export function calcVirtualTextDetail(elem: Element<'text'>, opts: CalcVirtualDe
     eachLineStartY = (fontHeight - fontSize) / 2;
   }
   if (lines.length * fontHeight < h) {
-    if (elem.detail.verticalAlign === 'top') {
+    if (detail.verticalAlign === 'top') {
       startY = 0;
-    } else if (elem.detail.verticalAlign === 'bottom') {
+    } else if (detail.verticalAlign === 'bottom') {
       startY += h - lines.length * fontHeight;
     } else {
       // middle and default
diff --git a/packages/types/src/index.ts b/packages/types/src/index.ts
index f358e57..9d3188b 100644
--- a/packages/types/src/index.ts
+++ b/packages/types/src/index.ts
@@ -18,4 +18,5 @@ export * from './lib/html';
 export * from './lib/svg-path';
 export * from './lib/config';
 export * from './lib/modify';
+export * from './lib/modify-info';
 export * from './lib/virtual-flat';
diff --git a/packages/types/src/lib/board.ts b/packages/types/src/lib/board.ts
index 966cd1d..2523821 100644
--- a/packages/types/src/lib/board.ts
+++ b/packages/types/src/lib/board.ts
@@ -143,22 +143,6 @@ export interface BoardViewer extends UtilEventEmitter<BoardViewerEventMap> {
   scroll(opts: { moveX?: number; moveY?: number; ignoreUpdateVisibleStatus?: boolean }): ViewScaleInfo;
   resize(viewSize: Partial<ViewSizeInfo>, opts?: { ignoreUpdateVisibleStatus?: boolean }): ViewSizeInfo;
   updateViewScaleInfo(opts: { scale: number; offsetX: number; offsetY: number }): ViewScaleInfo;
-
-  // resetVirtualFlatItemMap(
-  //   data: Data,
-  //   opts: {
-  //     viewScaleInfo: ViewScaleInfo;
-  //     viewSizeInfo: ViewSizeInfo;
-  //   }
-  // ): void;
-  // modifyVirtualFlatItemMap(
-  //   data: Data,
-  //   opts: {
-  //     modifyOptions: ModifyOptions;
-  //     viewScaleInfo: ViewScaleInfo;
-  //     viewSizeInfo: ViewSizeInfo;
-  //   }
-  // ): void;
 }
 
 export interface BoardRenderer extends UtilEventEmitter<RendererEventMap> {
diff --git a/packages/types/src/lib/core.ts b/packages/types/src/lib/core.ts
index 5a03b5a..62fde69 100644
--- a/packages/types/src/lib/core.ts
+++ b/packages/types/src/lib/core.ts
@@ -2,6 +2,7 @@ import type { Element, ElementSize, ElementType, ElementPosition } from './eleme
 import type { ViewScaleInfo } from './view';
 import type { Data } from './data';
 import type { BoardBaseEventMap } from './board';
+import type { ModifyType, ModifyRecord } from './modify';
 
 export interface CoreOptions {
   width: number;
@@ -32,24 +33,12 @@ export interface CoreEventCursor {
 //   uuids: string[];
 //   positions?: Array<Array<number>>;
 // }
-export interface CoreEventChange {
+export interface CoreEventChange<T extends ModifyType = ModifyType> {
   data: Data;
-  type:
-    | 'updateElement'
-    | 'deleteElement'
-    | 'moveElement'
-    | 'addElement'
-    | 'dragElement'
-    | 'resizeElement'
-    | 'setData'
-    | 'undo'
-    | 'redo'
-    | 'dragLayout'
-    | 'updateLayout'
-    | 'updateElementName'
-    | 'other';
+  type: T | 'setData' | 'other' | string;
   selectedElements?: Element[] | null;
   hoverElement?: Element | null;
+  modifyRecord?: ModifyRecord<T>;
 }
 export interface CoreEventScale {
   scale: number;
diff --git a/packages/types/src/lib/data.ts b/packages/types/src/lib/data.ts
index ef87813..77b6a33 100644
--- a/packages/types/src/lib/data.ts
+++ b/packages/types/src/lib/data.ts
@@ -19,7 +19,7 @@ export type DataLayout = Pick<ElementSize, 'x' | 'y' | 'w' | 'h'> & {
   };
 };
 
-export interface DataGlobalDetail {
+export interface DataGlobal {
   background?: string;
 }
 
@@ -28,7 +28,7 @@ export type Data<E extends Record<string, any> = Record<string, any>> = {
   elements: Element<ElementType, E>[];
   assets?: ElementAssets;
   layout?: DataLayout;
-  global?: DataGlobalDetail;
+  global?: DataGlobal;
 };
 
 export type Matrix = [
diff --git a/packages/types/src/lib/element.ts b/packages/types/src/lib/element.ts
index 7fa6179..721b221 100644
--- a/packages/types/src/lib/element.ts
+++ b/packages/types/src/lib/element.ts
@@ -178,19 +178,19 @@ export interface ElementOperations {
   lastModified?: number;
 }
 
-export interface ElementGlobalDetail {
+export interface ElementGlobal {
   background?: string;
 }
 
 export interface Element<T extends ElementType = ElementType, E extends Record<string, any> = Record<string, any>>
   extends ElementSize {
   uuid: string;
-  name?: string;
+  name?: string | null;
   type: T;
   detail: ElementDetailMap[T];
   operations?: ElementOperations;
   extends?: E;
-  // global?: ElementGlobalDetail;
+  // global?: ElementGlobal;
 }
 
 export type Elements = Element<ElementType>[];
diff --git a/packages/types/src/lib/idraw.ts b/packages/types/src/lib/idraw.ts
index 85829d6..e12331d 100644
--- a/packages/types/src/lib/idraw.ts
+++ b/packages/types/src/lib/idraw.ts
@@ -1,5 +1,12 @@
+import { ModifyRecord } from './modify';
 import type { CoreOptions } from './core';
-import type { MiddlewareSelectorStyle, MiddlewareInfoStyle, MiddlewareRulerStyle, MiddlewareScrollerStyle, MiddlewareLayoutSelectorStyle } from './middleware';
+import type {
+  MiddlewareSelectorStyle,
+  MiddlewareInfoStyle,
+  MiddlewareRulerStyle,
+  MiddlewareScrollerStyle,
+  MiddlewareLayoutSelectorStyle
+} from './middleware';
 
 export type IDrawMode = 'select' | 'drag' | 'readOnly';
 
@@ -14,10 +21,22 @@ export interface IDrawSettings {
     scroller?: Partial<MiddlewareScrollerStyle>;
     layoutSelector?: Partial<MiddlewareLayoutSelectorStyle>;
   };
+  history?: boolean;
 }
 
 export type IDrawOptions = CoreOptions & IDrawSettings;
 
+export type IDrawHistory = {
+  undo: () => void;
+  redo: () => void;
+  canUndo: () => void;
+  canRedo: () => void;
+  destroy: () => void;
+  clear: () => void;
+  __getDoRecords: () => ModifyRecord[];
+  __getUndoRecords: () => ModifyRecord[];
+};
+
 export interface IDrawStorage {
   mode: IDrawMode;
   enableRuler: boolean;
diff --git a/packages/types/src/lib/middleware.ts b/packages/types/src/lib/middleware.ts
index b434841..ed7025f 100644
--- a/packages/types/src/lib/middleware.ts
+++ b/packages/types/src/lib/middleware.ts
@@ -1,6 +1,10 @@
-import type { BoardMiddlewareObject, BoardMiddleware } from './board';
+import type { BoardExtendEventMap, BoardMiddlewareObject, BoardMiddleware } from './board';
 
-export type Middleware = BoardMiddleware;
+export type Middleware<
+  S extends Record<any | symbol, any> = any,
+  E extends BoardExtendEventMap = BoardExtendEventMap,
+  C extends any = undefined
+> = BoardMiddleware<S, E, C>;
 
 export type MiddlewareObject = BoardMiddlewareObject;
 
diff --git a/packages/types/src/lib/modify-info.ts b/packages/types/src/lib/modify-info.ts
new file mode 100644
index 0000000..4017761
--- /dev/null
+++ b/packages/types/src/lib/modify-info.ts
@@ -0,0 +1,22 @@
+import type { Element, ElementPosition } from './element';
+import type { RecursivePartial } from './util';
+
+type ModifyInfoType = 'updateElement' | 'addElement' | 'deleteElement' | 'moveElement';
+
+type ModifiedElement = Omit<RecursivePartial<Element>, 'uuid'>;
+
+interface ModifyInfoContentMap {
+  updateElement: {
+    position: ElementPosition;
+    beforeModifiedElement: ModifiedElement;
+    afterModifiedElement: ModifiedElement;
+  };
+  addElement: { position: ElementPosition; element: Element };
+  deleteElement: { position: ElementPosition; element: Element };
+  moveElement: { from: ElementPosition; to: ElementPosition };
+}
+
+export interface ModifyInfo<T extends ModifyInfoType = ModifyInfoType> {
+  type: T;
+  content: ModifyInfoContentMap[T];
+}
diff --git a/packages/types/src/lib/modify.ts b/packages/types/src/lib/modify.ts
index 2a0ff85..fb83a15 100644
--- a/packages/types/src/lib/modify.ts
+++ b/packages/types/src/lib/modify.ts
@@ -1,43 +1,196 @@
-import type { Element, ElementPosition } from './element';
-import type { RecursivePartial } from './util';
+import type { Element, ElementPosition, ElementOperations } from './element';
+import type { DataGlobal } from './data';
 
-export type ModifyType = 'updateElement' | 'addElement' | 'deleteElement' | 'moveElement';
+export type ModifyMethod =
+  | 'updateElement'
+  | 'modifyElement'
+  | 'deleteElement'
+  | 'moveElement'
+  | 'addElement'
+  | 'dragElement'
+  | 'dragElements'
+  | 'modifyElements'
+  | 'dragLayout'
+  | 'modifyLayout'
+  | 'modifyGlobal';
 
-export type ModifiedElement = Omit<RecursivePartial<Element>, 'uuid'>;
+export type ModifyType = ModifyMethod | 'undo' | 'redo';
 
-export type ModifiedTargetElement = ModifiedElement & { uuid: string };
+/**
+ * FlattenElement
+ For example:
+ { 
+    "x": 0,
+    "y": 0,
+    "w": 0,
+    "h": 0,
+    "detail.color": "#FFFFFF",
+    "detail.borderWidth[0]": 10,
+    "detail.borderWidth[1]": 20,
+    "detail.borderWidth[2]": 30,
+    "detail.borderWidth[3]": 40,
+  }
+ */
+export type FlattenElement = Record<string, string | number | undefined | null>;
+
+/**
+ * ModifiedLayoutDetail
+ For example:
+ { 
+    "x": 0,
+    "y": 0,
+    "w": 0,
+    "h": 0,
+    "detail.color": "#FFFFFF",
+    "detail.borderWidth[0]": 10,
+    "detail.borderWidth[1]": 20,
+    "detail.borderWidth[2]": 30,
+    "detail.borderWidth[3]": 40,
+  }
+ */
+export type FlattenLayout = Record<string, string | number | undefined | null>;
+
+/**
+ * FlattenGlobal
+ For example:
+ {  
+    "background": "#FFFFFF", 
+  }
+ */
+export type FlattenGlobal = Partial<DataGlobal>;
+
+export type ModifiedElementOperations = Partial<ElementOperations>;
 
 export interface ModifyContentMap {
-  updateElement: { position: ElementPosition; beforeModifiedElement: ModifiedElement; afterModifiedElement: ModifiedElement };
-  addElement: { position: ElementPosition; element: Element };
-  deleteElement: { position: ElementPosition; element: Element };
-  moveElement: { from: ElementPosition; to: ElementPosition };
-}
-
-export interface ModifyOptions<T extends ModifyType = ModifyType> {
-  type: T;
-  content: ModifyContentMap[T];
+  updateElement: {
+    method: 'updateElement';
+    uuid: string;
+    before: FlattenElement | null;
+    after: FlattenElement | null;
+  };
+  modifyElement: {
+    method: 'modifyElement';
+    uuid: string;
+    before: FlattenElement | null;
+    after: FlattenElement | null;
+  };
+  addElement: {
+    method: 'addElement';
+    uuid: string;
+    position: ElementPosition;
+    element: Element;
+  };
+  deleteElement: {
+    method: 'deleteElement';
+    uuid: string;
+    position: ElementPosition;
+    element: Element | null;
+  };
+  moveElement: {
+    method: 'moveElement';
+    uuid: string;
+    from: ElementPosition;
+    to: ElementPosition;
+  };
+  dragElement: {
+    method: 'modifyElement';
+    uuid: string;
+    before: FlattenElement | null;
+    after: FlattenElement | null;
+  };
+  dragElements: {
+    method: 'modifyElements';
+    before: (FlattenLayout & { uuid: string })[];
+    after: (FlattenLayout & { uuid: string })[];
+  };
+  dragLayout: {
+    method: 'modifyElement';
+    before: FlattenLayout;
+    after: FlattenLayout;
+  };
+  modifyLayout: {
+    method: 'modifyLayout';
+    before: FlattenLayout | null;
+    after: FlattenLayout | null;
+  };
+  modifyElements: {
+    method: 'modifyElements';
+    before: (FlattenLayout & { uuid: string })[];
+    after: (FlattenLayout & { uuid: string })[];
+  };
+  modifyGlobal: {
+    method: 'modifyGlobal';
+    before: FlattenGlobal | null;
+    after: FlattenGlobal | null;
+  };
 }
 
 export interface ModifyRecordMap {
   updateElement: {
     type: 'updateElement';
     time: number;
-  } & Required<ModifyContentMap['updateElement']>;
+    content: ModifyContentMap['updateElement'];
+  };
+  modifyElement: {
+    type: 'modifyElement';
+    time: number;
+    content: ModifyContentMap['modifyElement'];
+  };
   addElement: {
     type: 'addElement';
     time: number;
-  } & Required<ModifyContentMap['addElement']>;
+    content: ModifyContentMap['addElement'];
+  };
   deleteElement: {
     type: 'deleteElement';
     time: number;
-  } & Required<ModifyContentMap['deleteElement']>;
+    content: ModifyContentMap['deleteElement'];
+  };
   moveElement: {
     type: 'moveElement';
     time: number;
-    afterModifiedFrom: ElementPosition;
-    afterModifiedTo: ElementPosition;
-  } & Required<ModifyContentMap['moveElement']>;
+    content: ModifyContentMap['moveElement'];
+  };
+  dragElement: {
+    type: 'dragElement';
+    time: number;
+    content: ModifyContentMap['modifyElement'];
+  };
+  dragElements: {
+    type: 'dragElements';
+    time: number;
+    content: ModifyContentMap['modifyElements'];
+  };
+  modifyElements: {
+    type: 'modifyElements';
+    time: number;
+    content: ModifyContentMap['modifyElements'];
+  };
+  dragLayout: {
+    type: 'dragLayout';
+    time: number;
+    content: ModifyContentMap['dragLayout'];
+  };
+  modifyLayout: {
+    type: 'modifyLayout';
+    time: number;
+    content: ModifyContentMap['modifyLayout'];
+  };
+  modifyGlobal: {
+    type: 'modifyGlobal';
+    time: number;
+    content: ModifyContentMap['modifyGlobal'];
+  };
+  undo: {
+    type: 'undo';
+    time: number;
+    content: ModifyContentMap[ModifyMethod];
+  };
+  redo: {
+    type: 'redo';
+    time: number;
+    content: ModifyContentMap[ModifyMethod];
+  };
 }
 
 export type ModifyRecord<T extends ModifyType = ModifyType> = ModifyRecordMap[T];
diff --git a/packages/types/src/lib/view.ts b/packages/types/src/lib/view.ts
index 7694d41..74fac5c 100644
--- a/packages/types/src/lib/view.ts
+++ b/packages/types/src/lib/view.ts
@@ -2,7 +2,7 @@ import type { Element, ElementType } from './element';
 import type { Point, PointSize } from './point';
 import type { Data } from './data';
 import type { ViewContext2D } from './context2d';
-import type { ModifyOptions } from './modify';
+import type { ModifyInfo } from './modify-info';
 import { VirtualFlatItem } from './virtual-flat';
 // import type { BoxInfo } from './box';
 
@@ -72,7 +72,7 @@ export interface ViewCalculator {
   modifyVirtualFlatItemMap(
     data: Data,
     opts: {
-      modifyOptions: ModifyOptions;
+      modifyInfo: ModifyInfo;
       viewScaleInfo: ViewScaleInfo;
       viewSizeInfo: ViewSizeInfo;
     }
@@ -80,6 +80,7 @@ export interface ViewCalculator {
 
   toGridNum(num: number, opts?: { ignore?: boolean }): number;
   getVirtualFlatItem: (uuid: string) => VirtualFlatItem | null;
+  modifyText(element: Element<'text'>): void;
 }
 
 export type ViewRectVertexes = [PointSize, PointSize, PointSize, PointSize];
diff --git a/packages/util/__tests__/lib/color.test.ts b/packages/util/__tests__/lib/color.test.ts
index 3472723..b6d5e69 100644
--- a/packages/util/__tests__/lib/color.test.ts
+++ b/packages/util/__tests__/lib/color.test.ts
@@ -1,9 +1,4 @@
-import {
-  toColorHexNum,
-  toColorHexStr,
-  isColorStr
-} from '../../src/lib/color';
-
+import { toColorHexNum, toColorHexStr, isColorStr } from '@idraw/util';
 
 describe('@idraw/util: lib/color', () => {
   const hex = '#f0f0f0';
@@ -23,6 +18,4 @@ describe('@idraw/util: lib/color', () => {
     const result = isColorStr(hex);
     expect(result).toStrictEqual(true);
   });
-
 });
-
diff --git a/packages/util/__tests__/lib/context.test.ts b/packages/util/__tests__/lib/context.test.ts
index 5db0869..446b452 100644
--- a/packages/util/__tests__/lib/context.test.ts
+++ b/packages/util/__tests__/lib/context.test.ts
@@ -1,6 +1,5 @@
 /* eslint-disable @typescript-eslint/ban-ts-comment */
-import { Context2D } from './../../src/lib/context2d';
-import { deepClone } from './../../src/index';
+import { Context2D, deepClone } from '@idraw/util';
 import { getData } from './data';
 
 describe('@idraw/board: src/lib/context', () => {
diff --git a/packages/util/__tests__/lib/data.test.ts b/packages/util/__tests__/lib/data.test.ts
index 238694e..8eca2b7 100644
--- a/packages/util/__tests__/lib/data.test.ts
+++ b/packages/util/__tests__/lib/data.test.ts
@@ -1,128 +1,92 @@
-import { deepClone, filterCompactData } from '../../src/lib/data';
-import { imageBase64, html, svg } from '../_assets/base';
+import { deepClone, filterCompactData } from '@idraw/util';
 import type { Data } from '@idraw/types';
+import { imageBase64, html, svg } from '../_assets/base';
 
-describe('@idraw/util: lib/data', () => {
-  const json = {
-    num: 123,
-    str: 'abc',
-    bool: true,
-    arr: [
-      {
-        num: 1,
-        str: 'a',
-        bool: false
-      },
-      {
-        num: 2,
-        str: 'b',
-        bool: false
+const originData: Data = {
+  elements: [
+    {
+      uuid: 'b37213ce-d711-cbb3-51ac-d8081c19f127',
+      type: 'image',
+      x: 0,
+      y: 0,
+      w: 100,
+      h: 100,
+      detail: {
+        src: imageBase64
       }
-    ],
-    json: {
-      num: 10,
-      str: 'aaaa',
-      bool: false,
-      json: {
-        num: 11,
-        str: 'bbbb',
-        bool: false
+    },
+    {
+      uuid: '39308517-e10f-76df-43a9-50ed7295e61e',
+      type: 'svg',
+      x: 0,
+      y: 0,
+      w: 100,
+      h: 100,
+      detail: {
+        svg: svg
+      }
+    },
+    {
+      uuid: 'ef934ab7-a32e-040c-9ac0-ed193405e6e4',
+      type: 'html',
+      x: 0,
+      y: 0,
+      w: 100,
+      h: 100,
+      detail: {
+        html: html
+      }
+    },
+    {
+      uuid: '063e3a80-1ede-7912-f919-975e34a9bd01',
+      type: 'group',
+      x: 0,
+      y: 0,
+      w: 100,
+      h: 100,
+      detail: {
+        children: [
+          {
+            uuid: 'e0889472-1f16-d6cd-3c7a-4b827d52279d',
+            type: 'image',
+            x: 0,
+            y: 0,
+            w: 100,
+            h: 100,
+            detail: {
+              src: imageBase64
+            }
+          },
+          {
+            uuid: 'b60e64e8-833e-e112-d7eb-1ab6e7d6870c',
+            type: 'svg',
+            x: 0,
+            y: 0,
+            w: 100,
+            h: 100,
+            detail: {
+              svg: svg
+            }
+          },
+          {
+            uuid: '61f2a61e-cdd5-ae36-983f-686ba8e35973',
+            type: 'html',
+            x: 0,
+            y: 0,
+            w: 100,
+            h: 100,
+            detail: {
+              html: html
+            }
+          }
+        ]
       }
     }
-  };
-
-  const json2 = deepClone(json);
-  json2.json.json.num *= 2;
-
-  test('deepClone', async () => {
-    const result = deepClone(json);
-    result.json.json.num *= 2;
-    expect(result).toStrictEqual(json2);
-  });
+  ]
+};
 
+describe('@idraw/util: data ', () => {
   test('filterCompactData', () => {
-    const originData: Data = {
-      elements: [
-        {
-          uuid: 'b37213ce-d711-cbb3-51ac-d8081c19f127',
-          type: 'image',
-          x: 0,
-          y: 0,
-          w: 100,
-          h: 100,
-          detail: {
-            src: imageBase64
-          }
-        },
-        {
-          uuid: '39308517-e10f-76df-43a9-50ed7295e61e',
-          type: 'svg',
-          x: 0,
-          y: 0,
-          w: 100,
-          h: 100,
-          detail: {
-            svg: svg
-          }
-        },
-        {
-          uuid: 'ef934ab7-a32e-040c-9ac0-ed193405e6e4',
-          type: 'html',
-          x: 0,
-          y: 0,
-          w: 100,
-          h: 100,
-          detail: {
-            html: html
-          }
-        },
-        {
-          uuid: '063e3a80-1ede-7912-f919-975e34a9bd01',
-          type: 'group',
-          x: 0,
-          y: 0,
-          w: 100,
-          h: 100,
-          detail: {
-            children: [
-              {
-                uuid: 'e0889472-1f16-d6cd-3c7a-4b827d52279d',
-                type: 'image',
-                x: 0,
-                y: 0,
-                w: 100,
-                h: 100,
-                detail: {
-                  src: imageBase64
-                }
-              },
-              {
-                uuid: 'b60e64e8-833e-e112-d7eb-1ab6e7d6870c',
-                type: 'svg',
-                x: 0,
-                y: 0,
-                w: 100,
-                h: 100,
-                detail: {
-                  svg: svg
-                }
-              },
-              {
-                uuid: '61f2a61e-cdd5-ae36-983f-686ba8e35973',
-                type: 'html',
-                x: 0,
-                y: 0,
-                w: 100,
-                h: 100,
-                detail: {
-                  html: html
-                }
-              }
-            ]
-          }
-        }
-      ]
-    };
     const data = deepClone(originData);
     const compactData = filterCompactData(data);
 
@@ -135,7 +99,7 @@ describe('@idraw/util: lib/data', () => {
           y: 0,
           w: 100,
           h: 100,
-          detail: { src: '@assets/1919ff71-124e-2766-23bb-9a251bf3241c' }
+          detail: { src: '@assets/1k7sknuo56gr0h9ug9hs5g5xxgzeee07' }
         },
         {
           uuid: '39308517-e10f-76df-43a9-50ed7295e61e',
@@ -144,7 +108,7 @@ describe('@idraw/util: lib/data', () => {
           y: 0,
           w: 100,
           h: 100,
-          detail: { svg: '@assets/b9b92016-5290-54e8-9668-807574952823' }
+          detail: { svg: '@assets/36jxqyevkyph8yveb6zalsgxj5vc8not' }
         },
         {
           uuid: 'ef934ab7-a32e-040c-9ac0-ed193405e6e4',
@@ -153,7 +117,7 @@ describe('@idraw/util: lib/data', () => {
           y: 0,
           w: 100,
           h: 100,
-          detail: { html: '@assets/34017fa0-2d48-2506-3464-238f34642b5c' }
+          detail: { html: '@assets/cevdw4d1r85ynahctsjex89y03yev87a' }
         },
         {
           uuid: '063e3a80-1ede-7912-f919-975e34a9bd01',
@@ -171,7 +135,7 @@ describe('@idraw/util: lib/data', () => {
                 y: 0,
                 w: 100,
                 h: 100,
-                detail: { src: '@assets/1919ff71-124e-2766-23bb-9a251bf3241c' }
+                detail: { src: '@assets/1k7sknuo56gr0h9ug9hs5g5xxgzeee07' }
               },
               {
                 uuid: 'b60e64e8-833e-e112-d7eb-1ab6e7d6870c',
@@ -180,7 +144,7 @@ describe('@idraw/util: lib/data', () => {
                 y: 0,
                 w: 100,
                 h: 100,
-                detail: { svg: '@assets/b9b92016-5290-54e8-9668-807574952823' }
+                detail: { svg: '@assets/36jxqyevkyph8yveb6zalsgxj5vc8not' }
               },
               {
                 uuid: '61f2a61e-cdd5-ae36-983f-686ba8e35973',
@@ -189,22 +153,22 @@ describe('@idraw/util: lib/data', () => {
                 y: 0,
                 w: 100,
                 h: 100,
-                detail: { html: '@assets/34017fa0-2d48-2506-3464-238f34642b5c' }
+                detail: { html: '@assets/cevdw4d1r85ynahctsjex89y03yev87a' }
               }
             ]
           }
         }
       ],
       assets: {
-        '@assets/1919ff71-124e-2766-23bb-9a251bf3241c': {
+        '@assets/1k7sknuo56gr0h9ug9hs5g5xxgzeee07': {
           type: 'image',
           value: imageBase64
         },
-        '@assets/b9b92016-5290-54e8-9668-807574952823': {
+        '@assets/36jxqyevkyph8yveb6zalsgxj5vc8not': {
           type: 'svg',
           value: svg
         },
-        '@assets/34017fa0-2d48-2506-3464-238f34642b5c': {
+        '@assets/cevdw4d1r85ynahctsjex89y03yev87a': {
           type: 'html',
           value: html
         }
diff --git a/packages/util/__tests__/lib/file.test.ts b/packages/util/__tests__/lib/file.test.ts
index c4881d9..d44f73c 100644
--- a/packages/util/__tests__/lib/file.test.ts
+++ b/packages/util/__tests__/lib/file.test.ts
@@ -1,28 +1,21 @@
-import {
-  downloadImageFromCanvas
-} from '../../src/lib/file';
-
+import { downloadImageFromCanvas } from '@idraw/util';
 
 describe('@idraw/util: lib/file', () => {
-  
   const canvas = document.createElement('canvas');
   const ctx = canvas.getContext('2d') as CanvasRenderingContext2D;
   const opts = {
     width: 600,
-    height: 400,
-  }
+    height: 400
+  };
   ctx.clearRect(0, 0, opts.width, opts.height);
   ctx.fillStyle = '#ffffff';
   ctx.fillRect(0, 0, opts.width / 2, opts.height / 2);
 
-  test('downloadImageFromCanvas', async () => { 
+  test('downloadImageFromCanvas', async () => {
     downloadImageFromCanvas(canvas, {
-      filename: 'hello',
-      type: 'image/png',
-    }); 
+      fileName: 'hello',
+      type: 'image/png'
+    });
     expect(canvas).toMatchSnapshot();
   });
-  
-
 });
-
diff --git a/packages/util/__tests__/lib/flat-object.test.ts b/packages/util/__tests__/lib/flat-object.test.ts
new file mode 100644
index 0000000..9d5d5b8
--- /dev/null
+++ b/packages/util/__tests__/lib/flat-object.test.ts
@@ -0,0 +1,42 @@
+import { flatObject } from '@idraw/util';
+
+describe('flatObject', () => {
+  test('Basic object flattening', () => {
+    expect(flatObject({ a: { b: { c: 1 } } })).toEqual({ 'a.b.c': 1 });
+  });
+
+  test('Array flattening', () => {
+    expect(flatObject({ a: { b: ['c', 'd'] } })).toEqual({
+      'a.b[0]': 'c',
+      'a.b[1]': 'd'
+    });
+  });
+
+  test('Mixed types handling', () => {
+    const date = new Date();
+    expect(
+      flatObject({
+        a: {
+          b: 1,
+          c: [{ d: date }, null]
+        }
+      })
+    ).toStrictEqual({
+      'a.b': 1,
+      'a.c[0].d': date,
+      'a.c[1]': null
+    });
+  });
+
+  test('Primitive values handling', () => {
+    expect(flatObject(42 as any)).toEqual({ '': 42 });
+    expect(flatObject('text' as any)).toEqual({ '': 'text' });
+    expect(flatObject(null as any)).toEqual({ '': null });
+  });
+
+  test('Circular reference', () => {
+    const obj: Record<string, any> = { a: 1 };
+    obj.self = obj;
+    expect(() => flatObject(obj)).toThrow();
+  });
+});
diff --git a/packages/util/__tests__/lib/get-set.test.ts b/packages/util/__tests__/lib/get-set.test.ts
new file mode 100644
index 0000000..05bfab8
--- /dev/null
+++ b/packages/util/__tests__/lib/get-set.test.ts
@@ -0,0 +1,114 @@
+// get-set.test.ts
+import { get, set, toPath } from '@idraw/util';
+
+describe('toPath()', () => {
+  test('should handle string path with dots and brackets', () => {
+    expect(toPath('a[0].b.c')).toEqual(['a', '0', 'b', 'c']);
+    expect(toPath('x.y.z')).toEqual(['x', 'y', 'z']);
+    expect(toPath('arr[3].prop')).toEqual(['arr', '3', 'prop']);
+  });
+
+  test('should handle array path', () => {
+    expect(toPath(['a', '0', 'b'])).toEqual(['a', '0', 'b']);
+  });
+
+  test('should handle empty path', () => {
+    expect(toPath('')).toEqual([]);
+    expect(toPath([])).toEqual([]);
+  });
+});
+
+describe('get()', () => {
+  const testObj = {
+    a: {
+      b: {
+        c: 42,
+        d: [null, { e: 'value' }]
+      }
+    },
+    x: null,
+    y: undefined
+  };
+
+  test('should retrieve nested values', () => {
+    expect(get(testObj, 'a.b.c')).toBe(42);
+    expect(get(testObj, ['a', 'b', 'd', '1', 'e'])).toBe('value');
+    expect(get(testObj, 'a.b.d[0]')).toBe(null);
+  });
+
+  test('should handle invalid paths', () => {
+    expect(get(testObj, 'a.b.z')).toBeUndefined();
+    expect(get(testObj, 'x.y.z')).toBeUndefined();
+    expect(get(testObj, 'y.z')).toBeUndefined();
+  });
+
+  test('should return defaultValue for missing paths', () => {
+    expect(get(testObj, 'a.missing', 'default')).toBe('default');
+    expect(get({}, 'any.path', 123)).toBe(123);
+  });
+
+  test('should handle edge cases', () => {
+    expect(get(null, 'any.path', 'default')).toBe('default');
+    expect(get(undefined, 'any.path', 'default')).toBe('default');
+    expect(get({ a: 1 }, '')).toBeUndefined();
+  });
+});
+
+describe('set()', () => {
+  test('should set nested values in existing structure', () => {
+    const obj = { a: { b: { c: 1 } } };
+    set(obj, 'a.b.c', 2);
+    expect(obj.a.b.c).toBe(2);
+  });
+
+  test('should create missing path structures', () => {
+    const obj = {};
+    set(obj, 'x[0].y.z', 'value');
+    expect(obj).toEqual({
+      x: [
+        {
+          y: {
+            z: 'value'
+          }
+        }
+      ]
+    });
+  });
+
+  test('should handle array indexes', () => {
+    const obj = { arr: [] };
+    set(obj, 'arr[2].name', 'third');
+    expect(obj.arr).toEqual([, , { name: 'third' }]); // eslint-disable-line no-sparse-arrays
+  });
+
+  test('should overwrite existing primitives', () => {
+    const obj = { a: 1 };
+    set(obj, 'a.b.c', 'new-value');
+    expect(obj).toEqual({ a: { b: { c: 'new-value' } } });
+  });
+
+  test('should handle empty path', () => {
+    const obj = { a: 1 };
+    set(obj, '', 42);
+    expect(obj).toEqual({ a: 1 });
+  });
+
+  test('should handle null/undefined objects', () => {
+    const obj = null;
+    set(obj, 'a.b.c', 'value');
+    expect(obj).toBeNull();
+  });
+
+  test('should create arrays when next key is numeric', () => {
+    const obj: any = {};
+    set(obj, 'arr[1].prop', 'test');
+    expect(Array.isArray(obj.arr)).toBe(true);
+    expect(obj.arr[1].prop).toBe('test');
+  });
+
+  test('should handle intermediate null values', () => {
+    const obj: any = { a: null };
+    set(obj, 'a.b.c', 'value');
+    expect(obj.a.b.c).toBe('value');
+  });
+});
diff --git a/packages/util/__tests__/lib/istype.test.ts b/packages/util/__tests__/lib/istype.test.ts
index ae136b8..a35ac57 100644
--- a/packages/util/__tests__/lib/istype.test.ts
+++ b/packages/util/__tests__/lib/istype.test.ts
@@ -1,5 +1,5 @@
 /* eslint-disable @typescript-eslint/no-empty-function */
-import { istype } from '../../src/lib/istype';
+import { istype } from '@idraw/util';
 
 describe('@idraw/util: lib/istype', () => {
   const _num = 123;
diff --git a/packages/util/__tests__/lib/loader.test.ts b/packages/util/__tests__/lib/loader.test.ts
index e52fdac..e38f2e5 100644
--- a/packages/util/__tests__/lib/loader.test.ts
+++ b/packages/util/__tests__/lib/loader.test.ts
@@ -1,6 +1,6 @@
 import '../../../../__tests__/polyfill/image';
-import { loadHTML, loadImage, loadSVG } from '../../src/lib/load';
-import { parseHTMLToDataURL, parseSVGToDataURL } from '../../src/lib/parser';
+import { loadHTML, loadImage, loadSVG } from '@idraw/util';
+import { parseHTMLToDataURL, parseSVGToDataURL } from '../../src/view/parser';
 
 describe('@idraw/util: lib/loader', () => {
   test('loadHTML', async () => {
diff --git a/packages/util/__tests__/lib/modify-recorder.test.ts b/packages/util/__tests__/lib/modify-recorder.test.ts
deleted file mode 100644
index 858b954..0000000
--- a/packages/util/__tests__/lib/modify-recorder.test.ts
+++ /dev/null
@@ -1,441 +0,0 @@
-import type { Data, Element, ModifiedElement } from '@idraw/types';
-import { deepClone } from '@idraw/util';
-import { ModifyRecorder } from '../../src/lib/modify-recorder';
-import { imageBase64, html, svg } from '../_assets/base';
-
-const originData: Data = {
-  elements: [
-    {
-      uuid: 'b37213ce-d711-cbb3-51ac-d8081c19f127',
-      type: 'rect',
-      x: 0,
-      y: 0,
-      w: 100,
-      h: 100,
-      detail: {
-        background: '#A0A0A0'
-      }
-    },
-    {
-      uuid: '39308517-e10f-76df-43a9-50ed7295e61e',
-      type: 'circle',
-      x: 0,
-      y: 0,
-      w: 100,
-      h: 100,
-      detail: {
-        background: '#B0B0B0'
-      }
-    },
-    {
-      uuid: 'ef934ab7-a32e-040c-9ac0-ed193405e6e4',
-      type: 'text',
-      x: 0,
-      y: 0,
-      w: 100,
-      h: 100,
-      detail: {
-        text: 'Hello World'
-      }
-    },
-    {
-      uuid: '063e3a80-1ede-7912-f919-975e34a9bd01',
-      type: 'group',
-      x: 0,
-      y: 0,
-      w: 100,
-      h: 100,
-      detail: {
-        children: [
-          {
-            uuid: '76a9bc55-6400-5aff-3147-d6c9b0d68753',
-            type: 'rect',
-            x: 10,
-            y: 20,
-            w: 100,
-            h: 100,
-            detail: {
-              background: '#C0C0C0'
-            }
-          },
-          {
-            uuid: 'e0889472-1f16-d6cd-3c7a-4b827d52279d',
-            type: 'image',
-            x: 0,
-            y: 0,
-            w: 100,
-            h: 100,
-            detail: {
-              src: imageBase64
-            }
-          },
-          {
-            uuid: 'b60e64e8-833e-e112-d7eb-1ab6e7d6870c',
-            type: 'svg',
-            x: 0,
-            y: 0,
-            w: 100,
-            h: 100,
-            detail: {
-              svg: svg
-            }
-          },
-          {
-            uuid: '61f2a61e-cdd5-ae36-983f-686ba8e35973',
-            type: 'html',
-            x: 0,
-            y: 0,
-            w: 100,
-            h: 100,
-            detail: {
-              html: html
-            }
-          }
-        ]
-      }
-    }
-  ]
-};
-
-describe('ModifyRecorder', () => {
-  let dateSpy: any;
-  const mockTime = Date.parse('2024-01-01');
-
-  beforeAll(() => {
-    dateSpy = jest.spyOn(global.Date, 'now').mockImplementation(() => mockTime);
-  });
-
-  afterAll(() => {
-    dateSpy.mockRestore();
-  });
-
-  test('do-undo-redo addElement', () => {
-    const data = deepClone(originData);
-    const recorder = new ModifyRecorder({ recordable: true });
-    const elem: Element<'rect'> = {
-      uuid: '2d2c5333-352d-7734-9ad6-53faa0ba36fc',
-      type: 'rect',
-      x: 0,
-      y: 0,
-      w: 10,
-      h: 10,
-      detail: {
-        background: 'red'
-      }
-    };
-    let resultData: Data | null = null;
-    // do
-    {
-      resultData = recorder.do(data, {
-        type: 'addElement',
-        content: {
-          position: [1],
-          element: deepClone(elem)
-        }
-      });
-      const expectData = deepClone(originData);
-      expectData.elements.splice(1, 0, deepClone(elem));
-      expect(resultData).toStrictEqual(expectData);
-      const doRecords = recorder.$getDoStack();
-      expect(doRecords).toStrictEqual([
-        {
-          position: [1],
-          element: deepClone(elem),
-          type: 'addElement',
-          time: mockTime
-        }
-      ]);
-      const undoRecords = recorder.$getUndoStack();
-      expect(undoRecords).toStrictEqual([]);
-    }
-
-    // undo
-    {
-      resultData = recorder.undo(resultData as unknown as Data);
-      expect(resultData).toStrictEqual(originData);
-      const doRecords = recorder.$getDoStack();
-      expect(doRecords).toStrictEqual([]);
-      const unRecords = recorder.$getUndoStack();
-      expect(unRecords).toStrictEqual([
-        {
-          position: [1],
-          element: deepClone(elem),
-          type: 'addElement',
-          time: mockTime
-        }
-      ]);
-    }
-
-    // redo
-    {
-      resultData = recorder.redo(resultData as unknown as Data);
-      const expectData = deepClone(originData);
-      expectData.elements.splice(1, 0, deepClone(elem));
-      expect(resultData).toStrictEqual(expectData);
-
-      const doRecords = recorder.$getDoStack();
-      expect(doRecords).toStrictEqual([
-        {
-          position: [1],
-          element: deepClone(elem),
-          type: 'addElement',
-          time: mockTime
-        }
-      ]);
-      const undoRecords = recorder.$getUndoStack();
-      expect(undoRecords).toStrictEqual([]);
-    }
-  });
-
-  test('do-undo-redo updateElement', () => {
-    const data = deepClone(originData);
-    const recorder = new ModifyRecorder({ recordable: true });
-    const targetElem: Element<'rect'> = (data.elements?.[3] as Element<'group'>).detail.children[0] as Element<'rect'>;
-
-    const beforeElem: ModifiedElement = {
-      x: targetElem.x,
-      y: targetElem.y,
-      w: targetElem.w,
-      h: targetElem.h,
-      detail: {
-        background: targetElem.detail.background
-      }
-    };
-
-    const afterElem: ModifiedElement = {
-      x: 5,
-      y: 15,
-      w: 25,
-      h: 35,
-      detail: {
-        background: 'red'
-      }
-    };
-
-    let resultData: Data | null = null;
-    // do
-    {
-      resultData = recorder.do(data, {
-        type: 'updateElement',
-        content: {
-          position: [3, 0],
-          beforeModifiedElement: deepClone(beforeElem),
-          afterModifiedElement: deepClone(afterElem)
-        }
-      });
-      const expectData = deepClone(originData);
-      const expectTargetElem: Element<'rect'> = (expectData.elements?.[3] as Element<'group'>).detail.children[0] as Element<'rect'>;
-      expectTargetElem.x = afterElem.x as number;
-      expectTargetElem.y = afterElem.y as number;
-      expectTargetElem.w = afterElem.w as number;
-      expectTargetElem.h = afterElem.h as number;
-      expectTargetElem.detail.background = (afterElem as Element<'rect'>).detail.background as string;
-      expect(resultData).toStrictEqual(expectData);
-
-      const doRecords = recorder.$getDoStack();
-      expect(doRecords).toStrictEqual([
-        {
-          position: [3, 0],
-          beforeModifiedElement: deepClone(beforeElem),
-          afterModifiedElement: deepClone(afterElem),
-          type: 'updateElement',
-          time: mockTime
-        }
-      ]);
-      const undoRecords = recorder.$getUndoStack();
-      expect(undoRecords).toStrictEqual([]);
-    }
-
-    // undo
-    {
-      resultData = recorder.undo(resultData as unknown as Data);
-      const expectData = deepClone(originData);
-      expect(resultData).toStrictEqual(expectData);
-
-      const doRecords = recorder.$getDoStack();
-      expect(doRecords).toStrictEqual([]);
-
-      const unRecords = recorder.$getUndoStack();
-      expect(unRecords).toStrictEqual([
-        {
-          position: [3, 0],
-          beforeModifiedElement: deepClone(beforeElem),
-          afterModifiedElement: deepClone(afterElem),
-          type: 'updateElement',
-          time: mockTime
-        }
-      ]);
-    }
-
-    // redo
-    {
-      resultData = recorder.redo(resultData as unknown as Data);
-      const expectData = deepClone(originData);
-      const expectTargetElem: Element<'rect'> = (expectData.elements?.[3] as Element<'group'>).detail.children[0] as Element<'rect'>;
-      expectTargetElem.x = afterElem.x as number;
-      expectTargetElem.y = afterElem.y as number;
-      expectTargetElem.w = afterElem.w as number;
-      expectTargetElem.h = afterElem.h as number;
-      expectTargetElem.detail.background = (afterElem as Element<'rect'>).detail.background as string;
-      expect(resultData).toStrictEqual(expectData);
-
-      const doRecords = recorder.$getDoStack();
-      expect(doRecords).toStrictEqual([
-        {
-          position: [3, 0],
-          beforeModifiedElement: deepClone(beforeElem),
-          afterModifiedElement: deepClone(afterElem),
-          type: 'updateElement',
-          time: mockTime
-        }
-      ]);
-      const undoRecords = recorder.$getUndoStack();
-      expect(undoRecords).toStrictEqual([]);
-    }
-  });
-
-  test('do-undo-redo deleteElement', () => {
-    const data = deepClone(originData);
-    const recorder = new ModifyRecorder({ recordable: true });
-    const targetElem: Element<'rect'> = (data.elements?.[3] as Element<'group'>).detail.children[0] as Element<'rect'>;
-    let resultData: Data | null = null;
-    // do
-    {
-      resultData = recorder.do(data, {
-        type: 'deleteElement',
-        content: {
-          position: [3, 0],
-          element: deepClone(targetElem)
-        }
-      });
-      const expectData = deepClone(originData);
-      (expectData.elements?.[3] as Element<'group'>).detail.children.splice(0, 1);
-      expect(resultData).toStrictEqual(expectData);
-      const doRecords = recorder.$getDoStack();
-      expect(doRecords).toStrictEqual([
-        {
-          position: [3, 0],
-          element: deepClone(targetElem),
-          type: 'deleteElement',
-          time: mockTime
-        }
-      ]);
-      const undoRecords = recorder.$getUndoStack();
-      expect(undoRecords).toStrictEqual([]);
-    }
-
-    // undo
-    {
-      resultData = recorder.undo(resultData as unknown as Data);
-      expect(resultData).toStrictEqual(originData);
-      const doRecords = recorder.$getDoStack();
-      expect(doRecords).toStrictEqual([]);
-      const unRecords = recorder.$getUndoStack();
-      expect(unRecords).toStrictEqual([
-        {
-          position: [3, 0],
-          element: deepClone(targetElem),
-          type: 'deleteElement',
-          time: mockTime
-        }
-      ]);
-    }
-
-    // redo
-    {
-      resultData = recorder.redo(resultData as unknown as Data);
-      const expectData = deepClone(originData);
-      (expectData.elements?.[3] as Element<'group'>).detail.children.splice(0, 1);
-      expect(resultData).toStrictEqual(expectData);
-      const doRecords = recorder.$getDoStack();
-      expect(doRecords).toStrictEqual([
-        {
-          position: [3, 0],
-          element: deepClone(targetElem),
-          type: 'deleteElement',
-          time: mockTime
-        }
-      ]);
-      const undoRecords = recorder.$getUndoStack();
-      expect(undoRecords).toStrictEqual([]);
-    }
-  });
-
-  test('do-undo-redo moveElement', () => {
-    const data = deepClone(originData);
-    const recorder = new ModifyRecorder({ recordable: true });
-    let resultData: Data | null = null;
-    // const targetElem: Element<'rect'> = (data.elements?.[3] as Element<'group'>).detail.children[0] as Element<'rect'>;
-
-    // do
-    {
-      resultData = recorder.do(data, {
-        type: 'moveElement',
-        content: {
-          from: [3, 0],
-          to: [1]
-        }
-      });
-      const expectData = deepClone(originData);
-      const [fromElem] = (expectData.elements?.[3] as Element<'group'>).detail.children.splice(0, 1);
-      expectData.elements.splice(1, 0, fromElem);
-
-      expect(resultData).toStrictEqual(expectData);
-      const doRecords = recorder.$getDoStack();
-      expect(doRecords).toStrictEqual([
-        {
-          from: [3, 0],
-          to: [1],
-          afterModifiedFrom: [4, 0],
-          afterModifiedTo: [1],
-          type: 'moveElement',
-          time: mockTime
-        }
-      ]);
-      const undoRecords = recorder.$getUndoStack();
-      expect(undoRecords).toStrictEqual([]);
-    }
-
-    // undo
-    {
-      resultData = recorder.undo(resultData as unknown as Data);
-      expect(resultData).toStrictEqual(originData);
-      const doRecords = recorder.$getDoStack();
-      expect(doRecords).toStrictEqual([]);
-      const unRecords = recorder.$getUndoStack();
-      expect(unRecords).toStrictEqual([
-        {
-          from: [3, 0],
-          to: [1],
-          afterModifiedFrom: [4, 0],
-          afterModifiedTo: [1],
-          type: 'moveElement',
-          time: mockTime
-        }
-      ]);
-    }
-
-    // redo
-    {
-      resultData = recorder.redo(resultData as unknown as Data);
-      const expectData = deepClone(originData);
-      const [fromElem] = (expectData.elements?.[3] as Element<'group'>).detail.children.splice(0, 1);
-      expectData.elements.splice(1, 0, fromElem);
-
-      expect(resultData).toStrictEqual(expectData);
-      const doRecords = recorder.$getDoStack();
-      expect(doRecords).toStrictEqual([
-        {
-          from: [3, 0],
-          to: [1],
-          afterModifiedFrom: [4, 0],
-          afterModifiedTo: [1],
-          type: 'moveElement',
-          time: mockTime
-        }
-      ]);
-      const undoRecords = recorder.$getUndoStack();
-      expect(undoRecords).toStrictEqual([]);
-    }
-  });
-});
diff --git a/packages/util/__tests__/lib/modify.test.ts b/packages/util/__tests__/lib/modify.test.ts
deleted file mode 100644
index 5bb859a..0000000
--- a/packages/util/__tests__/lib/modify.test.ts
+++ /dev/null
@@ -1,35 +0,0 @@
-import { getModifiedElement } from '@idraw/util';
-import type { ModifiedElement, Element } from '@idraw/types';
-
-describe('modify', () => {
-  const originElement: Element = {
-    uuid: 'b37213ce-d711-cbb3-51ac-d8081c19f127',
-    type: 'rect',
-    x: 0,
-    y: 0,
-    w: 100,
-    h: 100,
-    detail: {
-      background: '#A0A0A0'
-    }
-  };
-
-  test('getModifiedElement', () => {
-    const elem: ModifiedElement = {
-      uuid: 'xxxxxx',
-      x: 5,
-      y: 10,
-      detail: {
-        background: 'red'
-      }
-    } as ModifiedElement;
-    const modifiedElem = getModifiedElement(elem, originElement);
-    expect(modifiedElem).toStrictEqual({
-      x: 0,
-      y: 0,
-      detail: {
-        background: '#A0A0A0'
-      }
-    });
-  });
-});
diff --git a/packages/util/__tests__/lib/move-element.test.ts b/packages/util/__tests__/lib/move-element.test.ts
new file mode 100644
index 0000000..9692039
--- /dev/null
+++ b/packages/util/__tests__/lib/move-element.test.ts
@@ -0,0 +1,199 @@
+import { moveElementPosition, calcRevertMovePosition } from '@idraw/util';
+import type { Elements } from '@idraw/types';
+const getElemBase = () => {
+  return {
+    x: 0,
+    y: 0,
+    w: 1,
+    h: 1
+  };
+};
+
+function generateElements(list: any[]): Elements {
+  const elements: Elements = list.map((item) => {
+    if (Array.isArray(item)) {
+      return {
+        ...getElemBase(),
+        uuid: `group`,
+        type: 'group',
+        detail: {
+          children: generateElements(item)
+        }
+      };
+    } else {
+      return {
+        ...getElemBase(),
+        uuid: `rect-${item}`,
+        type: 'rect',
+        detail: {}
+      };
+    }
+  }) as Elements;
+  return elements;
+}
+
+describe('@idraw/util: handle-element ', () => {
+  // [2] -> [4]
+  // [0, 1, 2, 3, 2, 4, 5]
+  // [0, 1, 3, 2, 4, 5]
+  test('moveElementPosition, move-down [2] -> [4]', () => {
+    const list: Elements = generateElements([0, 1, 2, 3, 4, 5]);
+    const from = [2];
+    const to = [4];
+    moveElementPosition(list, {
+      from,
+      to
+    });
+    const expectResult = generateElements([0, 1, 3, 2, 4, 5]);
+    expect(list).toStrictEqual(expectResult);
+    // revert action
+    // result [2] [3]
+    const revertInfo = calcRevertMovePosition({ from, to }) as { from: number[]; to: number[] };
+    // revert [3] -> [2]
+    moveElementPosition(list, {
+      from: revertInfo.from,
+      to: revertInfo.to
+    });
+    expect(list).toStrictEqual(generateElements([0, 1, 2, 3, 4, 5]));
+  });
+
+  // [4] -> [2] yes
+  // [0, 1, 4, 2, 3, 4, 5]
+  // [0, 1, 4, 2, 3, 5]
+  test('moveElementPosition, move-up [4] -> [2]', () => {
+    const list: Elements = generateElements([0, 1, 2, 3, 4, 5]);
+    const from = [4];
+    const to = [2];
+    moveElementPosition(list, {
+      from,
+      to
+    });
+    const expectResult = generateElements([0, 1, 4, 2, 3, 5]);
+    expect(list).toStrictEqual(expectResult);
+    // revert action
+    // result [5] [2]
+    const revertInfo = calcRevertMovePosition({ from, to }) as { from: number[]; to: number[] };
+    // revert [2] -> [5]
+    moveElementPosition(list, {
+      from: revertInfo.from,
+      to: revertInfo.to
+    });
+    expect(list).toStrictEqual(generateElements([0, 1, 2, 3, 4, 5]));
+  });
+
+  // [3, 2, 1] -> [2]
+  test('moveElementPosition, move-up [3, 2, 1] -> [2]', () => {
+    const list: Elements = generateElements([0, 1, 2, [0, 1, [0, 1, 2, 3], 3], 4, 5]);
+    const from = [3, 2, 1];
+    const to = [2];
+    moveElementPosition(list, {
+      from,
+      to
+    });
+    const expectResult = generateElements([0, 1, 1, 2, [0, 1, [0, 2, 3], 3], 4, 5]);
+    expect(list).toStrictEqual(expectResult);
+    // revert action
+    // result from: [ 4, 2, 1 ], to: [ 2 ]
+    const revertInfo = calcRevertMovePosition({ from, to }) as { from: number[]; to: number[] };
+    // revert [2] -> [ 4, 2, 1 ]
+    moveElementPosition(list, {
+      from: revertInfo.from,
+      to: revertInfo.to
+    });
+    expect(list).toStrictEqual(generateElements([0, 1, 2, [0, 1, [0, 1, 2, 3], 3], 4, 5]));
+  });
+
+  // [1] -> [1, 2, 3]
+  test('moveElementPosition, move-up [1] -> [1, 2, 3]', () => {
+    const list: Elements = generateElements([0, [0, 1, [0, 1, 2, 3, 4, 5], 3, 4, 5], 2, 3, 4, 5]);
+    const from = [1];
+    const to = [1, 2, 3];
+    moveElementPosition(list, {
+      from,
+      to
+    });
+    const expectResult = generateElements([0, [0, 1, [0, 1, 2, 3, 4, 5], 3, 4, 5], 2, 3, 4, 5]);
+    expect(list).toStrictEqual(expectResult);
+    // revert action null
+    const revertInfo = calcRevertMovePosition({ from, to });
+    expect(revertInfo).toBeNull();
+  });
+
+  // [1, 2, 3, 4, 5] -> [1, 2, 2]
+  test('moveElementPosition, move-up [1, 2, 3, 4, 5] -> [1, 2, 2]', () => {
+    const list: Elements = generateElements([
+      0,
+      [0, 1, [0, 1, 2, [0, 1, 2, 3, [0, 1, 2, 3, 4, 5], 5], 4, 5], 3, 4, 5],
+      2,
+      3,
+      4,
+      5
+    ]);
+    const from = [1, 2, 3, 4, 5];
+    const to = [1, 2, 2];
+    moveElementPosition(list, {
+      from,
+      to
+    });
+    const expectResult = generateElements([
+      0,
+      [0, 1, [0, 1, 5, 2, [0, 1, 2, 3, [0, 1, 2, 3, 4], 5], 4, 5], 3, 4, 5],
+      2,
+      3,
+      4,
+      5
+    ]);
+    expect(list).toStrictEqual(expectResult);
+    // revert action
+    // result from: [ 1, 2, 4, 4, 5 ], to: [ 1, 2, 2 ]
+    const revertInfo = calcRevertMovePosition({ from, to }) as { from: number[]; to: number[] };
+    // revert [ 1, 2, 2 ] -> [ 1, 2, 4, 4, 5 ]
+    moveElementPosition(list, {
+      from: revertInfo.from,
+      to: revertInfo.to
+    });
+    expect(list).toStrictEqual(
+      generateElements([0, [0, 1, [0, 1, 2, [0, 1, 2, 3, [0, 1, 2, 3, 4, 5], 5], 4, 5], 3, 4, 5], 2, 3, 4, 5])
+    );
+  });
+
+  // [1] -> [1]
+  test('moveElementPosition, move-up [1] -> [1]', () => {
+    const list: Elements = generateElements([0, 1, 2, [0, 1, [0, 1, 2, 3], 3], 4, 5]);
+    const from = [1];
+    const to = [1];
+    moveElementPosition(list, {
+      from,
+      to
+    });
+    const expectResult = generateElements([0, 1, 2, [0, 1, [0, 1, 2, 3], 3], 4, 5]);
+    expect(list).toStrictEqual(expectResult);
+    // revert action null
+    const revertInfo = calcRevertMovePosition({ from, to });
+    expect(revertInfo).toBeNull();
+  });
+
+  // [2, 4] -> [1, 2]
+  test('moveElementPosition, move-up [1, 2] -> [2, 4]', () => {
+    const list: Elements = generateElements([0, [0, 1, 2, 3, 4], [0, 1, 2, 3, 4], 3, 4]);
+    const from = [2, 4];
+    const to = [1, 2];
+    moveElementPosition(list, {
+      from,
+      to
+    });
+    const expectResult = generateElements([0, [0, 1, 4, 2, 3, 4], [0, 1, 2, 3], 3, 4]);
+    expect(list).toStrictEqual(expectResult);
+
+    // revert action
+    // result from: [ 2, 4 ], to: [ 1, 2 ]
+    const revertInfo = calcRevertMovePosition({ from, to }) as { from: number[]; to: number[] };
+
+    // revert [ 1, 2 ] -> [ 2, 4 ]
+    moveElementPosition(list, {
+      from: revertInfo.from,
+      to: revertInfo.to
+    });
+    expect(list).toStrictEqual(generateElements([0, [0, 1, 2, 3, 4], [0, 1, 2, 3, 4], 3, 4]));
+  });
+});
diff --git a/packages/util/__tests__/lib/parser.test.ts b/packages/util/__tests__/lib/parser.test.ts
index 80b2fec..6bae1ac 100644
--- a/packages/util/__tests__/lib/parser.test.ts
+++ b/packages/util/__tests__/lib/parser.test.ts
@@ -1,4 +1,4 @@
-import { parseHTMLToDataURL, parseSVGToDataURL } from '../../src/lib/parser';
+import { parseHTMLToDataURL, parseSVGToDataURL } from '../../src/view/parser';
 
 describe('@idraw/util: lib/parser', () => {
   test('parseHTMLToDataURL', async () => {
diff --git a/packages/util/__tests__/lib/time.test.ts b/packages/util/__tests__/lib/time.test.ts
index d4aa1c5..42a6cf1 100644
--- a/packages/util/__tests__/lib/time.test.ts
+++ b/packages/util/__tests__/lib/time.test.ts
@@ -1,58 +1,53 @@
-import {
-  delay, throttle, compose,
-} from '../../src/lib/time';
-
+import { delay, throttle, compose } from '@idraw/util';
 
 describe('@idraw/util: lib/delay', () => {
-
-  test('delay', async () => { 
+  test('delay', async () => {
     const start = Date.now();
     const time = 1000;
     await delay(time);
     const count = Date.now() - start;
     expect(count >= time).toStrictEqual(true);
   });
-  
-  test('throttle', async () => { 
+
+  test('throttle', async () => {
     let count = 0;
     function doThrottle() {
       return new Promise((resolve) => {
-        const func = throttle(function() {
-          count ++;
+        const func = throttle(function () {
+          count++;
         }, 100);
         let interval = setInterval(() => {
           if (count >= 5) {
             clearInterval(interval);
-            resolve(null)
+            resolve(null);
           }
           func();
         }, 5);
-      })
+      });
     }
     await doThrottle();
     expect(count).toStrictEqual(5);
   });
-  
 
-  test('compose', async () => { 
+  test('compose', async () => {
     let middleware = [];
     let context = {
       data: []
     };
 
-    middleware.push(async(ctx: any, next: any) => {
+    middleware.push(async (ctx: any, next: any) => {
       ctx.data.push(1);
       await next();
       ctx.data.push(6);
     });
 
-    middleware.push(async(ctx: any, next: any) => {
+    middleware.push(async (ctx: any, next: any) => {
       ctx.data.push(2);
       await next();
       ctx.data.push(5);
     });
 
-    middleware.push(async(ctx: any, next: any) => {
+    middleware.push(async (ctx: any, next: any) => {
       ctx.data.push(3);
       await next();
       ctx.data.push(4);
@@ -61,8 +56,6 @@ describe('@idraw/util: lib/delay', () => {
     const fn = compose(middleware);
 
     await fn(context);
-    expect(context).toStrictEqual({data: [1, 2, 3, 4, 5, 6]});
+    expect(context).toStrictEqual({ data: [1, 2, 3, 4, 5, 6] });
   });
-
 });
-
diff --git a/packages/util/__tests__/lib/unflat-object.test.ts b/packages/util/__tests__/lib/unflat-object.test.ts
new file mode 100644
index 0000000..9a8ce77
--- /dev/null
+++ b/packages/util/__tests__/lib/unflat-object.test.ts
@@ -0,0 +1,50 @@
+import { unflatObject } from '@idraw/util';
+
+describe('unflatObject', () => {
+  test('unflat object', () => {
+    expect(unflatObject({ 'a.b.c': 1 })).toStrictEqual({
+      a: { b: { c: 1 } }
+    });
+  });
+
+  test('unflat array', () => {
+    const input = {
+      'list[0]': 'a',
+      'list[1].name': 'b'
+    };
+    expect(unflatObject(input)).toEqual({ list: ['a', { name: 'b' }] });
+  });
+
+  test('unflat array and object', () => {
+    const input = {
+      'user.name': 'Alice',
+      'posts[0].title': 'First',
+      'posts[1].tags[0]': 'tech'
+    };
+    expect(unflatObject(input)).toEqual({
+      user: { name: 'Alice' },
+      posts: [{ title: 'First' }, { tags: ['tech'] }]
+    });
+  });
+
+  test('Error', () => {
+    expect(() =>
+      unflatObject({
+        'a.b': 1,
+        'a[0]': 2
+      })
+    ).toThrow(`Structure conflict at path 'a.0': Expected array but found object`);
+
+    // expect(() =>
+    //   unflatObject({
+    //     'a..b': 1
+    //   })
+    // ).toStrictEqual({});
+  });
+
+  test('Side cases', () => {
+    // expect(unflatObject({})).toEqual({});
+    // expect(unflatObject({ '': 42 })).toEqual({ '': 42 });
+    expect(unflatObject({ '': 42 })).toEqual({});
+  });
+});
diff --git a/packages/util/__tests__/lib/uuid.test.ts b/packages/util/__tests__/lib/uuid.test.ts
index c6c4221..2ac1909 100644
--- a/packages/util/__tests__/lib/uuid.test.ts
+++ b/packages/util/__tests__/lib/uuid.test.ts
@@ -1,15 +1,15 @@
-import {
-  createUUID
-} from '../../src/lib/uuid';
+import { createAssetId, isAssetId } from '@idraw/util';
 
+describe('@idraw/util: createAssetId ', () => {
+  test('url', () => {
+    const url1 = 'https://example.com/2025/01/01/000001.jpg';
+    const assetId1 = createAssetId(url1);
+    expect(isAssetId(assetId1)).toBeTruthy();
 
-describe('@idraw/util: lib/uuid', () => {
-  
-  test('createUUID', async () => { 
-    const uuid = createUUID();
-    expect(typeof uuid).toStrictEqual('string');
-    expect(uuid.length).toStrictEqual(36);
+    const url2 = 'https://example.com/2025/01/01/000002.jpg';
+    const assetId2 = createAssetId(url2);
+    expect(isAssetId(assetId2)).toBeTruthy();
+
+    expect(url1).not.toBe(url2);
   });
-  
 });
-
diff --git a/packages/util/src/index.ts b/packages/util/src/index.ts
index 68c9161..ddc2a31 100644
--- a/packages/util/src/index.ts
+++ b/packages/util/src/index.ts
@@ -1,11 +1,11 @@
-export { delay, compose, throttle, debounce } from './lib/time';
+export { delay, compose, throttle, debounce } from './tool/time';
 export {
   downloadImageFromCanvas,
   parseFileToBase64,
   pickFile,
   parseFileToText,
   downloadFileFromText
-} from './lib/file';
+} from './tool/file';
 export {
   toColorHexStr,
   toColorHexNum,
@@ -14,15 +14,15 @@ export {
   colorToCSS,
   colorToLinearGradientCSS,
   mergeHexColorAlpha
-} from './lib/color';
-export { createUUID, isAssetId, createAssetId } from './lib/uuid';
-export { deepClone, sortDataAsserts, deepCloneElement, deepCloneData, filterCompactData } from './lib/data';
-export { istype } from './lib/istype';
-export { loadImage, loadSVG, loadHTML } from './lib/load';
-export { is } from './lib/is';
-export { check } from './lib/check';
-export { createBoardContent, createContext2D, createOffscreenContext2D } from './lib/canvas';
-export { EventEmitter } from './lib/event';
+} from './tool/color';
+export { createUUID, isAssetId, createAssetId } from './tool/uuid';
+export { deepClone, sortDataAsserts, deepCloneElement, deepCloneData, filterCompactData } from './view/data';
+export { istype } from './tool/istype';
+export { loadImage, loadSVG, loadHTML } from './view/load';
+export { is } from './view/is';
+export { check } from './view/check';
+export { createBoardContent, createContext2D, createOffscreenContext2D } from './view/canvas';
+export { EventEmitter } from './tool/event';
 export {
   calcDistance,
   calcSpeed,
@@ -31,10 +31,10 @@ export {
   vaildPoint,
   vaildTouchPoint,
   getCenterFromTwoPoints
-} from './lib/point';
-export { Store } from './lib/store';
-export { getViewScaleInfoFromSnapshot, getViewSizeInfoFromSnapshot } from './lib/middleware';
-export { Context2D } from './lib/context2d';
+} from './view/point';
+export { Store } from './tool/store';
+export { getViewScaleInfoFromSnapshot, getViewSizeInfoFromSnapshot } from './view/middleware';
+export { Context2D } from './view/context2d';
 export {
   rotateElement,
   parseRadianToAngle,
@@ -46,7 +46,7 @@ export {
   rotatePointInGroup,
   limitAngle,
   calcRadian
-} from './lib/rotate';
+} from './view/rotate';
 export {
   getSelectedElementUUIDs,
   validateElements,
@@ -68,8 +68,8 @@ export {
   getElementPositionMapFromList,
   calcElementListSize,
   isSameElementSize
-} from './lib/element';
-export { checkRectIntersect } from './lib/rect';
+} from './view/element';
+export { checkRectIntersect } from './view/rect';
 export {
   viewScale,
   viewScroll,
@@ -85,23 +85,24 @@ export {
   originRectInfoToRangeRectInfo,
   isViewPointInElementSize,
   isViewPointInVertexes
-} from './lib/view-calc';
-export { rotatePoint, rotateVertexes, rotateByCenter } from './lib/rotate';
+} from './view/view-calc';
+export { rotatePoint, rotateVertexes, rotateByCenter } from './view/rotate';
 export {
   getElementVertexes,
   calcElementVertexesInGroup,
   calcElementVertexesQueueInGroup,
   calcElementQueueVertexesQueueInGroup
-} from './lib/vertex';
-export { calcElementSizeController, calcLayoutSizeController } from './lib/controller';
-export { generateSVGPath, parseSVGPath } from './lib/svg-path';
-export { generateHTML, parseHTML } from './lib/html';
-export { compressImage } from './lib/image';
-export { formatNumber } from './lib/number';
-export { matrixToAngle, matrixToRadian } from './lib/matrix';
-export { getDefaultElementDetailConfig, getDefaultElementRectDetail } from './lib/config';
-export { calcViewBoxSize } from './lib/view-box';
+} from './view/vertex';
+export { calcElementSizeController, calcLayoutSizeController } from './view/controller';
+export { generateSVGPath, parseSVGPath } from './view/svg-path';
+export { generateHTML, parseHTML } from './tool/html';
+export { compressImage } from './tool/image';
+export { formatNumber } from './tool/number';
+export { matrixToAngle, matrixToRadian } from './view/matrix';
+export { getDefaultElementDetailConfig, getDefaultElementRectDetail } from './view/config';
+export { calcViewBoxSize } from './view/view-box';
 export {
+  mergeElement,
   createElement,
   insertElementToListByPosition,
   deleteElementInListByPosition,
@@ -109,15 +110,21 @@ export {
   moveElementPosition,
   updateElementInList,
   updateElementInListByPosition
-} from './lib/handle-element';
-export { deepResizeGroupElement } from './lib/resize-element';
-export { calcViewCenterContent, calcViewCenter } from './lib/view-content';
-export { modifyElement, getModifiedElement } from './lib/modify';
-// export { ModifyRecorder } from './lib/modify-recorder';
-export { enhanceFontFamliy } from './lib/text';
-export { flatElementList } from './lib/flat';
-export { groupElementsByPosition, ungroupElementsByPosition } from './lib/group';
-export { calcPointMoveElementInGroup } from './lib/point-move-element';
-export { merge } from './lib/merge';
-export { omit } from './lib/omit';
-export { elementToBoxInfo } from './lib/box';
+} from './view/handle-element';
+export { deepResizeGroupElement } from './view/resize-element';
+export { calcViewCenterContent, calcViewCenter } from './view/view-content';
+export { toFlattenElement, toFlattenLayout, toFlattenGlobal } from './view/modify-record';
+export { enhanceFontFamliy } from './view/text';
+export { flatElementList } from './view/flat';
+export { groupElementsByPosition, ungroupElementsByPosition } from './view/group';
+export { calcPointMoveElementInGroup } from './view/point-move-element';
+export { mergeLayout } from './view/handle-layout';
+export { mergeGlobal } from './view/handle-global';
+export { calcRevertMovePosition, calcResultMovePosition } from './view/position';
+
+export { merge } from './tool/merge';
+export { omit } from './tool/omit';
+export { elementToBoxInfo } from './view/box';
+export { get, set, toPath } from './tool/get-set-del';
+export { flatObject } from './tool/flat-object';
+export { unflatObject } from './tool/unflat-object';
diff --git a/packages/util/src/lib/modify-recorder.ts b/packages/util/src/lib/modify-recorder.ts
deleted file mode 100644
index 89c8c63..0000000
--- a/packages/util/src/lib/modify-recorder.ts
+++ /dev/null
@@ -1,179 +0,0 @@
-import type { Data, ModifyType, ModifyContentMap, ModifyOptions, ModifyRecord } from '@idraw/types';
-import { deepClone } from './data';
-import { modifyElement } from './modify';
-
-export interface ModifyRecorderOptions {
-  recordable: boolean;
-}
-
-export class ModifyRecorder {
-  #doStack: ModifyRecord[] = [];
-  #undoStack: ModifyRecord[] = [];
-  #opts: ModifyRecorderOptions;
-
-  constructor(opts: ModifyRecorderOptions) {
-    this.#opts = opts;
-  }
-
-  #wrapRecord<T extends ModifyType>(opts: ModifyOptions<T>, modifiedContent: ModifyContentMap[T]): ModifyRecord<T> {
-    const content = opts.content as ModifyContentMap[T];
-    const modifyRecord: ModifyRecord<T> = {
-      ...deepClone<ModifyContentMap[T]>(content),
-      // ...deepClone<ModifyContentMap[T]>(modifiedContent),
-      type: opts.type,
-      time: Date.now()
-    } as ModifyRecord<T>;
-    const record = modifyRecord as ModifyRecord<T>;
-    if (opts.type === 'moveElement') {
-      (modifyRecord as ModifyRecord<'moveElement'>).afterModifiedFrom = [...(modifiedContent as ModifyContentMap['moveElement']).from];
-      (modifyRecord as ModifyRecord<'moveElement'>).afterModifiedTo = [...(modifiedContent as ModifyContentMap['moveElement']).to];
-    }
-    return record;
-  }
-
-  $getDoStack() {
-    return this.#doStack;
-  }
-
-  $getUndoStack() {
-    return this.#undoStack;
-  }
-
-  clear() {
-    this.#doStack = [];
-    this.#undoStack = [];
-  }
-
-  destroy() {
-    this.clear();
-    this.#doStack = null as any;
-    this.#undoStack = null as any;
-  }
-
-  do<T extends ModifyType>(data: Data, opts: ModifyOptions<T>): Data {
-    const { data: modifiedData, content } = modifyElement(data, opts);
-    if (this.#opts.recordable === true) {
-      const record = this.#wrapRecord(opts, content);
-      this.#doStack.push(record);
-    }
-    return modifiedData;
-  }
-
-  undo(data: Data): Data | null {
-    if (this.#opts.recordable !== true) {
-      return null;
-    }
-    let modifiedData: Data | null = null;
-    if (this.#doStack.length === 0) {
-      return data;
-    }
-    const item = this.#doStack.pop();
-    if (!item) {
-      return data;
-    }
-    if (item?.type === 'addElement') {
-      const record = item as ModifyRecord<'addElement'>;
-      const { position, element } = record;
-      modifiedData = modifyElement<'deleteElement'>(data, {
-        type: 'deleteElement',
-        content: {
-          position,
-          element
-        }
-      }).data;
-    } else if (item?.type === 'updateElement') {
-      const record = item as ModifyRecord<'updateElement'>;
-      const { position, beforeModifiedElement, afterModifiedElement } = record;
-      modifiedData = modifyElement<'updateElement'>(data, {
-        type: 'updateElement',
-        content: {
-          position,
-          beforeModifiedElement: afterModifiedElement,
-          afterModifiedElement: beforeModifiedElement
-        }
-      }).data;
-    } else if (item?.type === 'deleteElement') {
-      const record = item as ModifyRecord<'deleteElement'>;
-      const { position, element } = record;
-      modifiedData = modifyElement<'addElement'>(data, {
-        type: 'addElement',
-        content: {
-          position,
-          element
-        }
-      }).data;
-    } else if (item?.type === 'moveElement') {
-      const record = item as ModifyRecord<'moveElement'>;
-      const { afterModifiedFrom, afterModifiedTo } = record;
-      const modifiedResult = modifyElement<'moveElement'>(data, {
-        type: 'moveElement',
-        content: {
-          from: afterModifiedTo,
-          to: afterModifiedFrom
-        }
-      });
-      modifiedData = modifiedResult.data;
-    }
-    this.#undoStack.push(deepClone(item as ModifyRecord));
-    return modifiedData;
-  }
-
-  redo(data: Data): Data | null {
-    if (this.#opts.recordable !== true) {
-      return null;
-    }
-    let modifiedData: Data | null = null;
-    if (this.#undoStack.length === 0) {
-      return modifiedData;
-    }
-    const item = this.#undoStack.pop();
-    if (!item) {
-      return modifiedData;
-    }
-
-    if (item?.type === 'addElement') {
-      const record = item as ModifyRecord<'addElement'>;
-      const { position, element } = record;
-      modifiedData = modifyElement<'addElement'>(data, {
-        type: 'addElement',
-        content: {
-          position,
-          element
-        }
-      }).data;
-    } else if (item?.type === 'updateElement') {
-      const record = item as ModifyRecord<'updateElement'>;
-      const { position, beforeModifiedElement, afterModifiedElement } = record;
-      modifiedData = modifyElement<'updateElement'>(data, {
-        type: 'updateElement',
-        content: {
-          position,
-          beforeModifiedElement,
-          afterModifiedElement
-        }
-      }).data;
-    } else if (item?.type === 'deleteElement') {
-      const record = item as ModifyRecord<'deleteElement'>;
-      const { position, element } = record;
-      modifiedData = modifyElement<'deleteElement'>(data, {
-        type: 'deleteElement',
-        content: {
-          position,
-          element
-        }
-      }).data;
-    } else if (item?.type === 'moveElement') {
-      const record = item as ModifyRecord<'moveElement'>;
-      const { from, to } = record;
-      modifiedData = modifyElement<'moveElement'>(data, {
-        type: 'moveElement',
-        content: {
-          from,
-          to
-        }
-      }).data;
-    }
-    this.#doStack.push(deepClone(item as ModifyRecord));
-    return modifiedData;
-  }
-}
diff --git a/packages/util/src/lib/modify.ts b/packages/util/src/lib/modify.ts
deleted file mode 100644
index 4fd1911..0000000
--- a/packages/util/src/lib/modify.ts
+++ /dev/null
@@ -1,98 +0,0 @@
-import { Data, Element, ModifyOptions, ModifyType, ModifyContentMap, ModifiedElement } from '@idraw/types';
-import { insertElementToListByPosition, deleteElementInListByPosition, moveElementPosition, updateElementInListByPosition } from './handle-element';
-import { istype } from './istype';
-
-export function modifyElement<T extends ModifyType = ModifyType>(data: Data, options: ModifyOptions<T>): { data: Data; content: ModifyContentMap[T] } {
-  const { type } = options;
-  const content: ModifyContentMap[T] = { ...options.content } as ModifyContentMap[T];
-  if (type === 'addElement') {
-    const opts: ModifyOptions<'addElement'> = options as ModifyOptions<'addElement'>;
-    const { element, position } = opts.content;
-    if (position?.length > 0) {
-      insertElementToListByPosition(element, [...position], data.elements);
-    } else {
-      data.elements.push(element);
-    }
-  } else if (type === 'deleteElement') {
-    const opts: ModifyOptions<'deleteElement'> = options as ModifyOptions<'deleteElement'>;
-    const { position } = opts.content;
-    deleteElementInListByPosition(position, data.elements);
-  } else if (type === 'moveElement') {
-    const opts: ModifyOptions<'moveElement'> = options as ModifyOptions<'moveElement'>;
-    const { from, to } = opts.content;
-    const movedResult = moveElementPosition(data.elements, { from, to });
-    (content as ModifyContentMap['moveElement']).from = movedResult.from;
-    (content as ModifyContentMap['moveElement']).to = movedResult.to;
-    data.elements = movedResult.elements;
-  } else if (type === 'updateElement') {
-    const opts: ModifyOptions<'updateElement'> = options as ModifyOptions<'updateElement'>;
-    const { position, afterModifiedElement } = opts.content;
-    updateElementInListByPosition(position, afterModifiedElement, data.elements);
-  }
-  return { data, content };
-}
-
-function _get(source: any, path: string, defaultValue = undefined) {
-  // a.0.b -> ['a', '0', 'b']
-  const keyList = path.split('.');
-  const result = keyList.reduce((obj, key) => {
-    return Object(obj)[key];
-  }, source);
-  return result === undefined ? defaultValue : result;
-}
-
-function _set(obj: any, path: string, value: any) {
-  // a.0.b -> ['a', '0', 'b']
-  const keys = path.split('.');
-
-  if (typeof obj !== 'object') return obj;
-  keys.reduce((o, k, i, _) => {
-    if (i === _.length - 1) {
-      o[k] = value;
-      return null;
-    } else if (k in o) {
-      return o[k];
-    } else {
-      o[k] = /^[0-9]{1,}$/.test(_[i + 1]) ? [] : {};
-      return o[k];
-    }
-  }, obj);
-  return obj;
-}
-
-export function getModifiedElement(target: ModifiedElement, originElement: Element): ModifiedElement {
-  const modifiedElement: ModifiedElement = {};
-  const pathList: Array<number | string> = [];
-  const _walk = (t: any) => {
-    if (istype.json(t)) {
-      const keys = Object.keys(t);
-      keys.forEach((key: string) => {
-        pathList.push(key);
-        if (istype.json(t[key]) || istype.array(t[key])) {
-          _walk(t[key]);
-        } else {
-          const pathStr = pathList.join('.');
-          if (pathStr !== 'uuid') {
-            const value = _get(originElement, pathStr);
-            _set(modifiedElement, pathList.join('.'), value);
-          }
-        }
-        pathList.pop();
-      });
-    } else if (istype.array(t)) {
-      t.forEach((index: number) => {
-        pathList.push(index);
-        if (istype.json(t[index]) || istype.array(t[index])) {
-          _walk(t[index]);
-        } else {
-          const value = _get(originElement, pathList.join('.'));
-          _set(modifiedElement, pathList.join('.'), value);
-        }
-        pathList.pop();
-      });
-    }
-  };
-  _walk(target);
-
-  return modifiedElement;
-}
diff --git a/packages/util/src/lib/uuid.ts b/packages/util/src/lib/uuid.ts
deleted file mode 100644
index 950fb94..0000000
--- a/packages/util/src/lib/uuid.ts
+++ /dev/null
@@ -1,34 +0,0 @@
-export function createUUID(): string {
-  function _createStr() {
-    return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1);
-  }
-  return `${_createStr()}${_createStr()}-${_createStr()}-${_createStr()}-${_createStr()}-${_createStr()}${_createStr()}${_createStr()}`;
-}
-
-function limitHexStr(str: string) {
-  let count = 0;
-  for (let i = 0; i < str.length; i++) {
-    count += str.charCodeAt(i) * str.charCodeAt(i) * i * i;
-  }
-  return count.toString(16).substring(0, 4);
-}
-
-export function createAssetId(assetStr: string): string {
-  const len = assetStr.length;
-  const mid = Math.floor(len / 2);
-  const start4 = assetStr.substring(0, 4).padEnd(4, '0');
-  const end4 = assetStr.substring(0, 4).padEnd(4, '0');
-  const str1 = limitHexStr(len.toString(16).padEnd(4, start4));
-  const str2 = limitHexStr(assetStr.substring(mid - 4, mid).padEnd(4, start4)).padEnd(4, 'f');
-  const str3 = limitHexStr(assetStr.substring(mid - 8, mid - 4).padEnd(4, start4)).padEnd(4, 'f');
-  const str4 = limitHexStr(assetStr.substring(mid - 12, mid - 8).padEnd(4, start4)).padEnd(4, 'f');
-  const str5 = limitHexStr(assetStr.substring(mid - 16, mid - 12).padEnd(4, end4)).padEnd(4, 'f');
-  const str6 = limitHexStr(assetStr.substring(mid, mid + 4).padEnd(4, end4)).padEnd(4, 'f');
-  const str7 = limitHexStr(assetStr.substring(mid + 4, mid + 8).padEnd(4, end4)).padEnd(4, 'f');
-  const str8 = limitHexStr(end4.padEnd(4, start4).padEnd(4, end4));
-  return `@assets/${str1}${str2}-${str3}-${str4}-${str5}-${str6}${str7}${str8}`;
-}
-
-export function isAssetId(id: any | string): boolean {
-  return /^@assets\/[0-9a-z]{8,8}\-[0-9a-z]{4,4}\-[0-9a-z]{4,4}\-[0-9a-z]{4,4}\-[0-9a-z]{12,12}$/.test(`${id}`);
-}
diff --git a/packages/util/src/lib/color.ts b/packages/util/src/tool/color.ts
similarity index 100%
rename from packages/util/src/lib/color.ts
rename to packages/util/src/tool/color.ts
diff --git a/packages/util/src/lib/event.ts b/packages/util/src/tool/event.ts
similarity index 100%
rename from packages/util/src/lib/event.ts
rename to packages/util/src/tool/event.ts
diff --git a/packages/util/src/lib/file.ts b/packages/util/src/tool/file.ts
similarity index 100%
rename from packages/util/src/lib/file.ts
rename to packages/util/src/tool/file.ts
diff --git a/packages/util/src/tool/flat-object.ts b/packages/util/src/tool/flat-object.ts
new file mode 100644
index 0000000..9547ff3
--- /dev/null
+++ b/packages/util/src/tool/flat-object.ts
@@ -0,0 +1,59 @@
+type FlattenedObject = Record<string, any>;
+
+type FlatObjectOptions = {
+  ignorePaths?: string[]; // eg. ["detail.children"]
+};
+
+/**
+ * Flattens a nested object/array into a path-based object
+ * @param obj The input object
+ * @param parentKey The parent path (used internally for recursion)
+ * @param result The result object (used internally for recursion)
+ */
+function flattenObject<T extends Record<string, any>>(
+  obj: T,
+  parentKey: string = '',
+  result: FlattenedObject = {},
+  opts?: FlatObjectOptions
+): FlattenedObject {
+  // Iterate over each key in the object
+  Object.keys(obj).forEach((key) => {
+    // Compute the current full path
+    const currentKey = parentKey ? `${parentKey}${isArrayIndex(key) ? `[${key}]` : `.${key}`}` : key;
+    if (!opts?.ignorePaths?.includes(currentKey)) {
+      // Get the current value
+      const value = obj[key];
+
+      // Handle flattenable types (objects/arrays)
+      if (isFlattenable(value)) {
+        flattenObject(value, Array.isArray(value) ? currentKey : currentKey, result, opts);
+      }
+      // Handle primitive values that cannot be flattened further
+      else {
+        result[currentKey] = value;
+      }
+    }
+  });
+
+  return result;
+}
+
+// Type guard to check if the value can be flattened
+function isFlattenable(value: unknown): value is object | Array<unknown> {
+  return (typeof value === 'object' && value !== null && !(value instanceof Date)) || Array.isArray(value);
+}
+
+// Check if the key is an array index (for path formatting)
+function isArrayIndex(key: string): boolean {
+  return /^\d+$/.test(key) && !isNaN(Number(key));
+}
+
+// Main entry function to flatten an object with enhanced type support
+export function flatObject<T extends Record<string, any>>(obj: T, opts?: FlatObjectOptions): FlattenedObject {
+  // Defensive check for non-object input
+  if (typeof obj !== 'object' || obj === null) {
+    return { '': obj };
+  }
+
+  return flattenObject(obj, '', {}, opts);
+}
diff --git a/packages/util/src/tool/get-set-del.ts b/packages/util/src/tool/get-set-del.ts
new file mode 100644
index 0000000..de50603
--- /dev/null
+++ b/packages/util/src/tool/get-set-del.ts
@@ -0,0 +1,101 @@
+/**
+ * Convert path to array format
+ * @example 'a[0].b.c' => ['a', '0', 'b', 'c']
+ */
+export function toPath(path: string | string[]): string[] {
+  if (Array.isArray(path)) return [...path];
+  return path.split(/\.|\[|\]/).filter((key) => key !== '');
+}
+
+/**
+ * Lodash-style get method to retrieve nested object values
+ * @param obj Target object
+ * @param path Path string or array
+ * @param defaultValue Fallback value if path not found
+ */
+export function get<T = any, D = any>(obj: T, path: string | string[], defaultValue?: D): D | undefined {
+  if (!path) {
+    return undefined;
+  }
+  const pathArray = toPath(path);
+  let current: any = obj;
+
+  for (const key of pathArray) {
+    if (current === null || current === undefined) {
+      return defaultValue as D;
+    }
+    current = current[key];
+  }
+
+  return current !== undefined ? current : defaultValue;
+}
+
+/**
+ * Lodash-style set method to assign values to nested paths (mutates original object)
+ * @param obj Target object
+ * @param path Path string or array
+ * @param value Value to assign
+ */
+export function set<T = any>(obj: T, path: string | string[], value: any): T {
+  const pathArray = toPath(path);
+  if (pathArray.length === 0) {
+    return obj;
+  }
+
+  let current: any = obj;
+
+  if (current) {
+    for (let i = 0; i < pathArray.length; i++) {
+      const key = pathArray[i];
+
+      if (i === pathArray.length - 1) {
+        // Final path segment - assign value
+        current[key] = value;
+        break;
+      }
+
+      // Create missing path structures
+      if (current && (current?.[key] === undefined || typeof current?.[key] !== 'object' || current?.[key] === null)) {
+        const nextKey = pathArray[i + 1];
+        const isNextNumeric = /^\d+$/.test(nextKey);
+        current[key] = isNextNumeric ? [] : {};
+      }
+
+      current = current?.[key];
+    }
+  }
+
+  return obj;
+}
+
+export function del<T = any>(obj: T, path: string | string[]): T {
+  const pathArray = toPath(path);
+  if (pathArray.length === 0) {
+    return obj;
+  }
+
+  let current: any = obj;
+
+  if (current) {
+    for (let i = 0; i < pathArray.length; i++) {
+      const key = pathArray[i];
+
+      if (i === pathArray.length - 1) {
+        // Final path segment - delete value
+        delete current[key];
+        break;
+      }
+
+      // Create missing path structures
+      if (current && (current?.[key] === undefined || typeof current?.[key] !== 'object' || current?.[key] === null)) {
+        const nextKey = pathArray[i + 1];
+        const isNextNumeric = /^\d+$/.test(nextKey);
+        current[key] = isNextNumeric ? [] : {};
+      }
+
+      current = current?.[key];
+    }
+  }
+
+  return obj;
+}
diff --git a/packages/util/src/tool/hash.ts b/packages/util/src/tool/hash.ts
new file mode 100644
index 0000000..52e9004
--- /dev/null
+++ b/packages/util/src/tool/hash.ts
@@ -0,0 +1,52 @@
+/**
+ * Synchronously generates 32-character Base36 encoded hash (enhanced 256-bit algorithm)
+ * @param str - Input string (any length)
+ * @returns 32-character lowercase Base36 string (0-9a-z)
+ */
+export function generate32Base36Hash(str: string): string {
+  // Generate 256-bit hash (4x64-bit FNV hashes)
+  const hash256 = generate256BitHash(str);
+  // Convert to Base36 and format to 32 characters
+  return bigIntToBase36(hash256).padStart(32, '0').slice(0, 32);
+}
+// // Usage example
+// console.log(generate32Base36Hash('hello world'));
+// // Sample output: 2yj8q4z7kpr6s9d5m2w3x1g6h8j4n0q
+
+// Core algorithm for generating 256-bit hash
+function generate256BitHash(str: string): bigint {
+  let h1 = 0xcbf29ce484222325n,
+    h2 = 0x84222325cbf29ce4n;
+  let h3 = 0x1b3n * h1,
+    h4 = 0x1000000n * h2; // Different initial values
+  const prime = 0x100000001b3n;
+
+  // Chunk processing for large texts (per 4096 characters)
+  const chunkSize = 4096;
+  for (let i = 0; i < str.length; i += chunkSize) {
+    const chunk = str.slice(i, i + chunkSize);
+    for (let j = 0; j < chunk.length; j++) {
+      const code = BigInt(chunk.charCodeAt(j) + i + j); // Position-sensitive
+      h1 = (h1 ^ code) * prime;
+      h2 = ((h2 ^ h1) * prime) ^ h3;
+      h3 = (h3 ^ h2) * prime + h4;
+      h4 = ((h4 ^ h3) * prime) | 0x1234567890abcdefn;
+    }
+  }
+
+  // Combine 4x64-bit hashes into 256-bit
+  return (h1 << 192n) | (h2 << 128n) | (h3 << 64n) | h4;
+}
+
+// Utility function for BigInt to Base36 conversion
+function bigIntToBase36(num: bigint): string {
+  const chars = '0123456789abcdefghijklmnopqrstuvwxyz';
+  if (num === 0n) return '0';
+  let result = '';
+  while (num > 0n) {
+    const rem = num % 36n;
+    result = chars[Number(rem)] + result;
+    num = num / 36n;
+  }
+  return result;
+}
diff --git a/packages/util/src/lib/html.ts b/packages/util/src/tool/html.ts
similarity index 95%
rename from packages/util/src/lib/html.ts
rename to packages/util/src/tool/html.ts
index 27fd8fe..1151e17 100644
--- a/packages/util/src/lib/html.ts
+++ b/packages/util/src/tool/html.ts
@@ -2,6 +2,7 @@
 import { HTMLNode } from '@idraw/types';
 
 const attrRegExp = /\s([^'"/\s><]+?)[\s/>]|([^\s=]+)=\s?(".*?"|'.*?')/g;
+// eslint-disable-next-line no-useless-escape
 const elemRegExp = /<[a-zA-Z0-9\-\!\/](?:"[^"]*"|'[^']*'|[^'">])*>/g;
 const whitespaceReg = /^\s*$/;
 
@@ -163,7 +164,7 @@ export function parseHTML(html: string) {
 
 function attrString(attrs: HTMLNode['attributes']) {
   const buff = [];
-  for (let key in attrs) {
+  for (const key in attrs) {
     buff.push(key + '="' + attrs[key] + '"');
   }
   if (!buff.length) {
@@ -177,7 +178,11 @@ function stringify(buff: string, htmlNode: HTMLNode): string {
     case 'text':
       return buff + htmlNode.textContent;
     case 'element':
-      buff += '<' + htmlNode.name + (htmlNode.attributes ? attrString(htmlNode.attributes) : '') + (htmlNode.isVoid ? '/>' : '>');
+      buff +=
+        '<' +
+        htmlNode.name +
+        (htmlNode.attributes ? attrString(htmlNode.attributes) : '') +
+        (htmlNode.isVoid ? '/>' : '>');
       if (htmlNode.isVoid) {
         return buff;
       }
diff --git a/packages/util/src/lib/image.ts b/packages/util/src/tool/image.ts
similarity index 100%
rename from packages/util/src/lib/image.ts
rename to packages/util/src/tool/image.ts
diff --git a/packages/util/src/lib/istype.ts b/packages/util/src/tool/istype.ts
similarity index 100%
rename from packages/util/src/lib/istype.ts
rename to packages/util/src/tool/istype.ts
diff --git a/packages/util/src/lib/merge.ts b/packages/util/src/tool/merge.ts
similarity index 100%
rename from packages/util/src/lib/merge.ts
rename to packages/util/src/tool/merge.ts
diff --git a/packages/util/src/lib/number.ts b/packages/util/src/tool/number.ts
similarity index 100%
rename from packages/util/src/lib/number.ts
rename to packages/util/src/tool/number.ts
diff --git a/packages/util/src/lib/omit.ts b/packages/util/src/tool/omit.ts
similarity index 100%
rename from packages/util/src/lib/omit.ts
rename to packages/util/src/tool/omit.ts
diff --git a/packages/util/src/lib/store.ts b/packages/util/src/tool/store.ts
similarity index 96%
rename from packages/util/src/lib/store.ts
rename to packages/util/src/tool/store.ts
index 5637aee..1dd447a 100644
--- a/packages/util/src/lib/store.ts
+++ b/packages/util/src/tool/store.ts
@@ -1,5 +1,5 @@
 import type { RecursivePartial } from '@idraw/types';
-import { deepClone } from './data';
+import { deepClone } from '../view/data';
 
 export class Store<
   T extends Record<string | symbol, any> = Record<string | symbol, any>,
diff --git a/packages/util/src/lib/time.ts b/packages/util/src/tool/time.ts
similarity index 100%
rename from packages/util/src/lib/time.ts
rename to packages/util/src/tool/time.ts
diff --git a/packages/util/src/tool/unflat-object.ts b/packages/util/src/tool/unflat-object.ts
new file mode 100644
index 0000000..fbdb342
--- /dev/null
+++ b/packages/util/src/tool/unflat-object.ts
@@ -0,0 +1,121 @@
+type NestedStructure = object | unknown[];
+
+/**
+ * Restores a flattened object to its original nested structure
+ * @param flatObj Flattened object (e.g., { 'a.b.c': 1, 'a.d[0]': 2 })
+ * @returns Nested object structure (e.g., { a: { b: { c: 1 }, d: [2] } })
+ */
+export function unflatObject<T extends Record<string, unknown>>(flatObj: T): NestedStructure {
+  const result: NestedStructure = {};
+
+  for (const [flatKey, value] of Object.entries(flatObj)) {
+    const pathParts = parseKeyToPath(flatKey);
+    buildNestedStructure(result, pathParts, value);
+  }
+
+  return result;
+}
+
+/**
+ * Improved path parser with better array handling
+ * @example 'a.b[0].c' => ['a', 'b', '0', 'c']
+ */
+function parseKeyToPath(flatKey: string): string[] {
+  const regex = /([\w-]+)|\[(\d+)\]/g;
+  const pathParts: string[] = [];
+  let match: RegExpExecArray | null;
+
+  while ((match = regex.exec(flatKey)) !== null) {
+    const prop = match[1] || match[2];
+    if (prop) {
+      pathParts.push(prop);
+    }
+  }
+
+  return pathParts;
+}
+
+/**
+ * Enhanced structure builder with array fixes
+ */
+function buildNestedStructure(currentObj: NestedStructure, pathParts: string[], value: unknown): void {
+  let currentLevel: any = currentObj;
+
+  for (let i = 0; i < pathParts.length; i++) {
+    const part = pathParts[i];
+    const isArrayPart = isArrayIndex(part);
+    const isLast = i === pathParts.length - 1;
+
+    try {
+      if (isArrayPart) {
+        validateArrayPath(currentLevel, part);
+      } else {
+        validateObjectPath(currentLevel, part);
+      }
+    } catch (e: any) {
+      throw new Error(`Structure conflict at path '${pathParts.slice(0, i + 1).join('.')}': ${e.message}`);
+    }
+
+    if (isLast) {
+      assignValue(currentLevel, part, value);
+    } else {
+      currentLevel = prepareNextLevel(currentLevel, part, pathParts[i + 1]);
+    }
+  }
+}
+
+// Utility functions ===============================================
+
+function isArrayIndex(key: string): boolean {
+  return /^\d+$/.test(key);
+}
+
+function validateArrayPath(obj: any, index: string): void {
+  if (!Array.isArray(obj)) {
+    throw new Error(`Expected array but found ${typeof obj}`);
+  }
+
+  const idx = Number(index);
+  if (idx > obj.length) {
+    obj.length = idx + 1;
+  }
+}
+
+function validateObjectPath(obj: any, key: string): void {
+  if (Array.isArray(obj)) {
+    throw new Error(`Cannot create object property '${key}' on array`);
+  }
+
+  if (typeof obj !== 'object' || obj === null) {
+    throw new Error(`Invalid structure for property '${key}'`);
+  }
+}
+
+function prepareNextLevel(current: any, part: string, nextPart?: string): any {
+  const isNextArray = nextPart ? isArrayIndex(nextPart) : false;
+
+  if (Array.isArray(current)) {
+    const index = Number(part);
+    if (!current[index]) {
+      current[index] = isNextArray ? [] : {};
+    }
+    return current[index];
+  }
+
+  if (!current[part]) {
+    current[part] = isNextArray ? [] : {};
+  }
+  return current[part];
+}
+
+function assignValue(target: any, key: string, value: unknown): void {
+  if (Array.isArray(target)) {
+    const index = Number(key);
+    if (index >= target.length) {
+      target.length = index + 1;
+    }
+    target[index] = value;
+  } else {
+    target[key] = value;
+  }
+}
diff --git a/packages/util/src/tool/uuid.ts b/packages/util/src/tool/uuid.ts
new file mode 100644
index 0000000..37753c3
--- /dev/null
+++ b/packages/util/src/tool/uuid.ts
@@ -0,0 +1,16 @@
+import { generate32Base36Hash } from './hash';
+
+export function createUUID(): string {
+  function _createStr() {
+    return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1);
+  }
+  return `${_createStr()}${_createStr()}-${_createStr()}-${_createStr()}-${_createStr()}-${_createStr()}${_createStr()}${_createStr()}`;
+}
+
+export function createAssetId(assetStr: string): string {
+  return `@assets/${generate32Base36Hash(assetStr)}`;
+}
+
+export function isAssetId(id: any | string): boolean {
+  return /^@assets\/[0-9a-z-]{0,}$/.test(`${id}`);
+}
diff --git a/packages/util/src/lib/box.ts b/packages/util/src/view/box.ts
similarity index 100%
rename from packages/util/src/lib/box.ts
rename to packages/util/src/view/box.ts
diff --git a/packages/util/src/lib/canvas.ts b/packages/util/src/view/canvas.ts
similarity index 100%
rename from packages/util/src/lib/canvas.ts
rename to packages/util/src/view/canvas.ts
diff --git a/packages/util/src/lib/check.ts b/packages/util/src/view/check.ts
similarity index 56%
rename from packages/util/src/lib/check.ts
rename to packages/util/src/view/check.ts
index da0cdda..2255435 100644
--- a/packages/util/src/lib/check.ts
+++ b/packages/util/src/view/check.ts
@@ -14,13 +14,13 @@ function attrs(attrs: any): boolean {
 
 function box(detail: any = {}): boolean {
   const { borderColor, borderRadius, borderWidth } = detail;
-  if (detail.hasOwnProperty('borderColor') && !is.color(borderColor)) {
+  if (Object.prototype.hasOwnProperty.call(detail, 'borderColor') && !is.color(borderColor)) {
     return false;
   }
-  if (detail.hasOwnProperty('borderRadius') && !is.number(borderRadius)) {
+  if (Object.prototype.hasOwnProperty.call(detail, 'borderRadius') && !is.number(borderRadius)) {
     return false;
   }
-  if (detail.hasOwnProperty('borderWidth') && !is.number(borderWidth)) {
+  if (Object.prototype.hasOwnProperty.call(detail, 'borderWidth') && !is.number(borderWidth)) {
     return false;
   }
   return true;
@@ -28,7 +28,7 @@ function box(detail: any = {}): boolean {
 
 function rectDesc(detail: any): boolean {
   const { background } = detail;
-  if (detail.hasOwnProperty('background') && !is.color(background)) {
+  if (Object.prototype.hasOwnProperty.call(detail, 'background') && !is.color(background)) {
     return false;
   }
   if (!box(detail)) {
@@ -39,13 +39,13 @@ function rectDesc(detail: any): boolean {
 
 function circleDesc(detail: any): boolean {
   const { background, borderColor, borderWidth } = detail;
-  if (detail.hasOwnProperty('background') && !is.color(background)) {
+  if (Object.prototype.hasOwnProperty.call(detail, 'background') && !is.color(background)) {
     return false;
   }
-  if (detail.hasOwnProperty('borderColor') && !is.color(borderColor)) {
+  if (Object.prototype.hasOwnProperty.call(detail, 'borderColor') && !is.color(borderColor)) {
     return false;
   }
-  if (detail.hasOwnProperty('borderWidth') && !is.number(borderWidth)) {
+  if (Object.prototype.hasOwnProperty.call(detail, 'borderWidth') && !is.number(borderWidth)) {
     return false;
   }
   return true;
@@ -76,7 +76,8 @@ function htmlDesc(detail: any): boolean {
 }
 
 function textDesc(detail: any): boolean {
-  const { text, color, fontSize, lineHeight, fontFamily, textAlign, fontWeight, background, strokeWidth, strokeColor } = detail;
+  const { text, color, fontSize, lineHeight, fontFamily, textAlign, fontWeight, background, strokeWidth, strokeColor } =
+    detail;
   if (!is.text(text)) {
     return false;
   }
@@ -86,25 +87,25 @@ function textDesc(detail: any): boolean {
   if (!is.fontSize(fontSize)) {
     return false;
   }
-  if (detail.hasOwnProperty('background') && !is.color(background)) {
+  if (Object.prototype.hasOwnProperty.call(detail, 'background') && !is.color(background)) {
     return false;
   }
-  if (detail.hasOwnProperty('fontWeight') && !is.fontWeight(fontWeight)) {
+  if (Object.prototype.hasOwnProperty.call(detail, 'fontWeight') && !is.fontWeight(fontWeight)) {
     return false;
   }
-  if (detail.hasOwnProperty('lineHeight') && !is.lineHeight(lineHeight)) {
+  if (Object.prototype.hasOwnProperty.call(detail, 'lineHeight') && !is.lineHeight(lineHeight)) {
     return false;
   }
-  if (detail.hasOwnProperty('fontFamily') && !is.fontFamily(fontFamily)) {
+  if (Object.prototype.hasOwnProperty.call(detail, 'fontFamily') && !is.fontFamily(fontFamily)) {
     return false;
   }
-  if (detail.hasOwnProperty('textAlign') && !is.textAlign(textAlign)) {
+  if (Object.prototype.hasOwnProperty.call(detail, 'textAlign') && !is.textAlign(textAlign)) {
     return false;
   }
-  if (detail.hasOwnProperty('strokeWidth') && !is.strokeWidth(strokeWidth)) {
+  if (Object.prototype.hasOwnProperty.call(detail, 'strokeWidth') && !is.strokeWidth(strokeWidth)) {
     return false;
   }
-  if (detail.hasOwnProperty('strokeColor') && !is.color(strokeColor)) {
+  if (Object.prototype.hasOwnProperty.call(detail, 'strokeColor') && !is.color(strokeColor)) {
     return false;
   }
 
diff --git a/packages/util/src/lib/config.ts b/packages/util/src/view/config.ts
similarity index 100%
rename from packages/util/src/lib/config.ts
rename to packages/util/src/view/config.ts
diff --git a/packages/util/src/lib/context2d.ts b/packages/util/src/view/context2d.ts
similarity index 100%
rename from packages/util/src/lib/context2d.ts
rename to packages/util/src/view/context2d.ts
diff --git a/packages/util/src/lib/controller.ts b/packages/util/src/view/controller.ts
similarity index 86%
rename from packages/util/src/lib/controller.ts
rename to packages/util/src/view/controller.ts
index f4a08d5..a493b0f 100644
--- a/packages/util/src/lib/controller.ts
+++ b/packages/util/src/view/controller.ts
@@ -1,5 +1,13 @@
-import type { Element, ElementSize, ElementSizeController, ViewRectVertexes, PointSize, ViewScaleInfo, LayoutSizeController } from '@idraw/types';
-import { createUUID } from './uuid';
+import type {
+  Element,
+  ElementSize,
+  ElementSizeController,
+  ViewRectVertexes,
+  PointSize,
+  ViewScaleInfo,
+  LayoutSizeController
+} from '@idraw/types';
+import { createUUID } from '../tool/uuid';
 import { getCenterFromTwoPoints } from './point';
 import { calcElementVertexesInGroup, calcElementVertexes } from './vertex';
 import { calcViewElementSize } from './view-calc';
@@ -85,17 +93,40 @@ export function calcElementSizeController(
   const topLeftSize = createControllerElementSizeFromCenter(topLeftCenter, { size: ctrlSize, angle: totalAngle });
   const topRightSize = createControllerElementSizeFromCenter(topRightCenter, { size: ctrlSize, angle: totalAngle });
   const bottomLeftSize = createControllerElementSizeFromCenter(bottomLeftCenter, { size: ctrlSize, angle: totalAngle });
-  const bottomRightSize = createControllerElementSizeFromCenter(bottomRightCenter, { size: ctrlSize, angle: totalAngle });
+  const bottomRightSize = createControllerElementSizeFromCenter(bottomRightCenter, {
+    size: ctrlSize,
+    angle: totalAngle
+  });
 
   const topLeftVertexes = calcElementVertexes(topLeftSize);
   const topRightVertexes = calcElementVertexes(topRightSize);
   const bottomLeftVertexes = calcElementVertexes(bottomLeftSize);
   const bottomRightVertexes = calcElementVertexes(bottomRightSize);
 
-  const topVertexes: ViewRectVertexes = [topLeftVertexes[1], topRightVertexes[0], topRightVertexes[3], topLeftVertexes[2]];
-  const rightVertexes: ViewRectVertexes = [topRightVertexes[3], topRightVertexes[2], bottomRightVertexes[1], bottomRightVertexes[0]];
-  const bottomVertexes: ViewRectVertexes = [bottomLeftVertexes[1], bottomRightVertexes[0], bottomRightVertexes[3], bottomLeftVertexes[2]];
-  const leftVertexes: ViewRectVertexes = [topLeftVertexes[3], topLeftVertexes[2], bottomLeftVertexes[1], bottomLeftVertexes[0]];
+  const topVertexes: ViewRectVertexes = [
+    topLeftVertexes[1],
+    topRightVertexes[0],
+    topRightVertexes[3],
+    topLeftVertexes[2]
+  ];
+  const rightVertexes: ViewRectVertexes = [
+    topRightVertexes[3],
+    topRightVertexes[2],
+    bottomRightVertexes[1],
+    bottomRightVertexes[0]
+  ];
+  const bottomVertexes: ViewRectVertexes = [
+    bottomLeftVertexes[1],
+    bottomRightVertexes[0],
+    bottomRightVertexes[3],
+    bottomLeftVertexes[2]
+  ];
+  const leftVertexes: ViewRectVertexes = [
+    topLeftVertexes[3],
+    topLeftVertexes[2],
+    bottomLeftVertexes[1],
+    bottomLeftVertexes[0]
+  ];
 
   const topMiddleVertexes = calcElementVertexes(topMiddleSize);
   const rightMiddleVertexes = calcElementVertexes(rightMiddleSize);
@@ -236,10 +267,30 @@ export function calcLayoutSizeController(
   const bottomLeftVertexes = calcElementVertexes(bottomLeftSize);
   const bottomRightVertexes = calcElementVertexes(bottomRightSize);
 
-  const topVertexes: ViewRectVertexes = [topLeftVertexes[1], topRightVertexes[0], topRightVertexes[3], topLeftVertexes[2]];
-  const rightVertexes: ViewRectVertexes = [topRightVertexes[3], topRightVertexes[2], bottomRightVertexes[1], bottomRightVertexes[0]];
-  const bottomVertexes: ViewRectVertexes = [bottomLeftVertexes[1], bottomRightVertexes[0], bottomRightVertexes[3], bottomLeftVertexes[2]];
-  const leftVertexes: ViewRectVertexes = [topLeftVertexes[3], topLeftVertexes[2], bottomLeftVertexes[1], bottomLeftVertexes[0]];
+  const topVertexes: ViewRectVertexes = [
+    topLeftVertexes[1],
+    topRightVertexes[0],
+    topRightVertexes[3],
+    topLeftVertexes[2]
+  ];
+  const rightVertexes: ViewRectVertexes = [
+    topRightVertexes[3],
+    topRightVertexes[2],
+    bottomRightVertexes[1],
+    bottomRightVertexes[0]
+  ];
+  const bottomVertexes: ViewRectVertexes = [
+    bottomLeftVertexes[1],
+    bottomRightVertexes[0],
+    bottomRightVertexes[3],
+    bottomLeftVertexes[2]
+  ];
+  const leftVertexes: ViewRectVertexes = [
+    topLeftVertexes[3],
+    topLeftVertexes[2],
+    bottomLeftVertexes[1],
+    bottomLeftVertexes[0]
+  ];
 
   const topMiddleVertexes = calcElementVertexes(topMiddleSize);
   const rightMiddleVertexes = calcElementVertexes(rightMiddleSize);
diff --git a/packages/util/src/lib/data.ts b/packages/util/src/view/data.ts
similarity index 98%
rename from packages/util/src/lib/data.ts
rename to packages/util/src/view/data.ts
index e4dc667..889363d 100644
--- a/packages/util/src/lib/data.ts
+++ b/packages/util/src/view/data.ts
@@ -1,5 +1,5 @@
 import type { Data, ElementAssets, Elements, ElementType, Element, LoadItemMap } from '@idraw/types';
-import { createAssetId, createUUID, isAssetId } from './uuid';
+import { createAssetId, createUUID, isAssetId } from '../tool/uuid';
 
 export function deepClone<T = any>(target: T): T {
   function _clone(t: T) {
diff --git a/packages/util/src/lib/element.ts b/packages/util/src/view/element.ts
similarity index 96%
rename from packages/util/src/lib/element.ts
rename to packages/util/src/view/element.ts
index 41895d5..59ca536 100644
--- a/packages/util/src/lib/element.ts
+++ b/packages/util/src/view/element.ts
@@ -12,7 +12,7 @@ import type {
   ElementPosition
 } from '@idraw/types';
 import { limitAngle, rotateElementVertexes } from './rotate';
-import { isAssetId, createAssetId } from './uuid';
+import { isAssetId, createAssetId } from '../tool/uuid';
 
 function getGroupUUIDs(elements: Array<Element<ElementType>>, index: string): string[] {
   const uuids: string[] = [];
@@ -203,7 +203,11 @@ export function calcElementsViewInfo(
 ): {
   contextSize: ViewContextSize;
 } {
-  const contextSize = calcElementsContextSize(elements, { viewWidth: prevViewSize.width, viewHeight: prevViewSize.height, extend: options?.extend });
+  const contextSize = calcElementsContextSize(elements, {
+    viewWidth: prevViewSize.width,
+    viewHeight: prevViewSize.height,
+    extend: options?.extend
+  });
   if (options?.extend === true) {
     contextSize.contextWidth = Math.max(contextSize.contextWidth, prevViewSize.contextWidth);
     contextSize.contextHeight = Math.max(contextSize.contextHeight, prevViewSize.contextHeight);
@@ -293,7 +297,10 @@ export function getGroupQueueFromList(uuid: string, elements: Element<ElementTyp
   return groupQueue;
 }
 
-export function getGroupQueueByElementPosition(elements: Element<ElementType>[], position: ElementPosition): Element<'group'>[] | null {
+export function getGroupQueueByElementPosition(
+  elements: Element<ElementType>[],
+  position: ElementPosition
+): Element<'group'>[] | null {
   const groupQueue: Element<'group'>[] = [];
   let currentElements: Element[] = elements;
   if (position.length > 1) {
@@ -408,7 +415,7 @@ export function findElementFromListByPosition(position: ElementPosition, list: E
   for (let i = 0; i < position.length; i++) {
     const pos = position[i];
     const item = tempList[pos];
-    if (i < position.length - 1 && item.type === 'group') {
+    if (i < position.length - 1 && item?.type === 'group') {
       tempList = (item as Element<'group'>).detail.children;
     } else if (i === position.length - 1) {
       result = item;
@@ -507,6 +514,10 @@ export function getElementPositionMapFromList(
 
 export function isSameElementSize(elem1: ElementSize, elem2: ElementSize) {
   return (
-    elem1.x === elem2.x && elem1.y === elem2.y && elem1.h === elem2.h && elem1.w === elem2.w && limitAngle(elem1.angle || 0) === limitAngle(elem2.angle || 0)
+    elem1.x === elem2.x &&
+    elem1.y === elem2.y &&
+    elem1.h === elem2.h &&
+    elem1.w === elem2.w &&
+    limitAngle(elem1.angle || 0) === limitAngle(elem2.angle || 0)
   );
 }
diff --git a/packages/util/src/lib/flat.ts b/packages/util/src/view/flat.ts
similarity index 98%
rename from packages/util/src/lib/flat.ts
rename to packages/util/src/view/flat.ts
index cdb662b..0db6101 100644
--- a/packages/util/src/lib/flat.ts
+++ b/packages/util/src/view/flat.ts
@@ -9,7 +9,8 @@ function flatElementSize(
   }
 ): ElementSize {
   const { groupQueue } = opts;
-  let { x, y, w, h, angle = 0 } = elemSize;
+  let { x, y } = elemSize;
+  const { w, h, angle = 0 } = elemSize;
   let totalAngle = 0;
   groupQueue.forEach((group) => {
     x += group.x;
diff --git a/packages/util/src/lib/group.ts b/packages/util/src/view/group.ts
similarity index 98%
rename from packages/util/src/lib/group.ts
rename to packages/util/src/view/group.ts
index c45adfe..ca7a297 100644
--- a/packages/util/src/lib/group.ts
+++ b/packages/util/src/view/group.ts
@@ -1,7 +1,7 @@
 import type { Elements, Element, ElementPosition } from '@idraw/types';
 import { findElementFromListByPosition, calcElementListSize } from './element';
 import { deleteElementInListByPosition, insertElementToListByPosition } from './handle-element';
-import { createUUID } from './uuid';
+import { createUUID } from '../tool/uuid';
 
 export function groupElementsByPosition(list: Elements, positions: ElementPosition[]): Elements {
   if (positions.length > 1) {
diff --git a/packages/util/src/lib/handle-element.ts b/packages/util/src/view/handle-element.ts
similarity index 80%
rename from packages/util/src/lib/handle-element.ts
rename to packages/util/src/view/handle-element.ts
index f4f13cc..1534402 100644
--- a/packages/util/src/lib/handle-element.ts
+++ b/packages/util/src/view/handle-element.ts
@@ -1,6 +1,14 @@
-/* eslint-disable @typescript-eslint/ban-ts-comment */
-import type { RecursivePartial, Element, Elements, ElementPosition, ElementSize, ElementType, ViewScaleInfo, ViewSizeInfo } from '@idraw/types';
-import { createUUID } from './uuid';
+import type {
+  RecursivePartial,
+  Element,
+  Elements,
+  ElementPosition,
+  ElementSize,
+  ElementType,
+  ViewScaleInfo,
+  ViewSizeInfo
+} from '@idraw/types';
+import { createUUID } from '../tool/uuid';
 import {
   defaultText,
   getDefaultElementRectDetail,
@@ -10,7 +18,8 @@ import {
   getDefaultElementImageDetail,
   getDefaultElementGroupDetail
 } from './config';
-import { istype } from './istype';
+import { toFlattenElement } from './modify-record';
+import { set, del } from '../tool/get-set-del';
 import { findElementFromListByPosition, getElementPositionFromList } from './element';
 import { deepResizeGroupElement } from './resize-element';
 
@@ -18,7 +27,10 @@ const defaultViewWidth = 200;
 const defaultViewHeight = 200;
 // const defaultDetail = getDefaultElementDetailConfig();
 
-function createElementSize(type: ElementType, opts?: { viewScaleInfo: ViewScaleInfo; viewSizeInfo: ViewSizeInfo }): ElementSize {
+function createElementSize(
+  type: ElementType,
+  opts?: { viewScaleInfo: ViewScaleInfo; viewSizeInfo: ViewSizeInfo }
+): ElementSize {
   let x = 0;
   let y = 0;
   let w = defaultViewWidth;
@@ -87,9 +99,9 @@ export function createElement<T extends ElementType>(
     detail = getDefaultElementGroupDetail();
   }
   const elem: Element<T> = {
+    uuid: createUUID(),
     ...elementSize,
     ...baseElem,
-    uuid: createUUID(),
     type,
     detail: {
       ...detail,
@@ -170,7 +182,7 @@ export function moveElementPosition(
     return { elements, from, to };
   }
 
-  // [1] -> [1, 2, 3]
+  // invalid [1] -> [1, 2, 3]
   if (from.length <= to.length) {
     for (let i = 0; i < from.length; i++) {
       if (to[i] === from[i]) {
@@ -273,47 +285,47 @@ export function moveElementPosition(
   return { elements, from, to };
 }
 
-function mergeElement<T extends Element<ElementType> = Element<ElementType>>(originElem: T, updateContent: RecursivePartial<T>): T {
-  const commonKeys = Object.keys(updateContent);
-  for (let i = 0; i < commonKeys.length; i++) {
-    const commonKey = commonKeys[i];
-    if (['x', 'y', 'w', 'h', 'angle', 'name'].includes(commonKey)) {
-      // @ts-ignore
-      originElem[commonKey] = updateContent[commonKey];
-    } else if (['detail', 'operations'].includes(commonKey)) {
-      // @ts-ignore
-      if (istype.json(updateContent[commonKey] as any)) {
-        if (!(originElem as unknown)?.hasOwnProperty(commonKey)) {
-          // @ts-ignore
-          originElem[commonKey] = {};
-        }
-        // @ts-ignore
-        if (istype.json(originElem[commonKey])) {
-          // @ts-ignore
-          originElem[commonKey] = { ...originElem[commonKey], ...updateContent[commonKey] };
-        }
-        // @ts-ignore
-      } else if (istype.array(updateContent[commonKey] as any)) {
-        if (!(originElem as unknown)?.hasOwnProperty(commonKey)) {
-          // @ts-ignore
-          originElem[commonKey] = [];
-        }
-        // @ts-ignore
-        if (istype.array(originElem[commonKey])) {
-          ((updateContent as any)?.[commonKey] as Array<any>)?.forEach((item, i) => {
-            // @ts-ignore
-            originElem[commonKey][i] = item;
-          });
-          // @ts-ignore
-          originElem[commonKey] = [...originElem[commonKey], ...updateContent[commonKey]];
-        }
+export function mergeElement<T extends Element<ElementType> = Element<ElementType>>(
+  originElem: T,
+  updateContent: RecursivePartial<T>,
+  opts?: {
+    strict?: boolean;
+  }
+): T {
+  const updatedFlatten = toFlattenElement(updateContent);
+  const ignoreKeys = ['uuid', 'type'];
+
+  const updatedKeys = Object.keys(updatedFlatten);
+  updatedKeys.forEach((key) => {
+    if (!ignoreKeys.includes(key)) {
+      const value = updatedFlatten[key];
+      del(originElem, key);
+      if (value !== undefined) {
+        set(originElem, key, value);
       }
     }
+  });
+
+  if (opts?.strict === true) {
+    const originFlatten = toFlattenElement(originElem);
+    const originKeys = Object.keys(originFlatten);
+    originKeys.forEach((key) => {
+      if (!ignoreKeys.includes(key)) {
+        if (!updatedKeys.includes(key)) {
+          del(originElem, key);
+        }
+      }
+    });
   }
+
   return originElem;
 }
 
-export function updateElementInList(uuid: string, updateContent: RecursivePartial<Element<ElementType>>, elements: Element[]): Element | null {
+export function updateElementInList(
+  uuid: string,
+  updateContent: RecursivePartial<Element<ElementType>>,
+  elements: Element[]
+): Element | null {
   let targetElement: Element | null = null;
   for (let i = 0; i < elements.length; i++) {
     const elem = elements[i];
@@ -340,7 +352,8 @@ export function updateElementInList(uuid: string, updateContent: RecursivePartia
 export function updateElementInListByPosition(
   position: ElementPosition,
   updateContent: RecursivePartial<Element<ElementType>>,
-  elements: Element[]
+  elements: Element[],
+  opts?: { strict?: boolean }
 ): Element | null {
   const elem: Element | null = findElementFromListByPosition(position, elements);
   if (elem) {
@@ -352,7 +365,7 @@ export function updateElementInListByPosition(
         });
       }
     }
-    mergeElement(elem, updateContent);
+    mergeElement(elem, updateContent, opts);
   }
   return elem;
 }
diff --git a/packages/util/src/view/handle-global.ts b/packages/util/src/view/handle-global.ts
new file mode 100644
index 0000000..30abe21
--- /dev/null
+++ b/packages/util/src/view/handle-global.ts
@@ -0,0 +1,39 @@
+import type { RecursivePartial, DataGlobal } from '@idraw/types';
+import { toFlattenGlobal } from './modify-record';
+import { set, del } from '../tool/get-set-del';
+
+export function mergeGlobal(
+  originGlobal: DataGlobal,
+  updateContent: RecursivePartial<DataGlobal>,
+  opts?: {
+    strict?: boolean;
+  }
+): DataGlobal {
+  const updatedFlatten = toFlattenGlobal(updateContent);
+  const ignoreKeys: string[] = []; // TODO
+
+  const updatedKeys = Object.keys(updatedFlatten);
+  updatedKeys.forEach((key) => {
+    if (!ignoreKeys.includes(key)) {
+      const value = updatedFlatten[key];
+      del(originGlobal, key);
+      if (value !== undefined) {
+        set(originGlobal, key, value);
+      }
+    }
+  });
+
+  if (opts?.strict === true) {
+    const originFlatten = toFlattenGlobal(originGlobal);
+    const originKeys = Object.keys(originFlatten);
+    originKeys.forEach((key) => {
+      if (!ignoreKeys.includes(key)) {
+        if (!updatedKeys.includes(key)) {
+          del(originGlobal, key);
+        }
+      }
+    });
+  }
+
+  return originGlobal;
+}
diff --git a/packages/util/src/view/handle-layout.ts b/packages/util/src/view/handle-layout.ts
new file mode 100644
index 0000000..ff35833
--- /dev/null
+++ b/packages/util/src/view/handle-layout.ts
@@ -0,0 +1,39 @@
+import type { RecursivePartial, DataLayout } from '@idraw/types';
+import { toFlattenLayout } from './modify-record';
+import { set, del } from '../tool/get-set-del';
+
+export function mergeLayout(
+  originLayout: DataLayout,
+  updateContent: RecursivePartial<DataLayout>,
+  opts?: {
+    strict?: boolean;
+  }
+): DataLayout {
+  const updatedFlatten = toFlattenLayout(updateContent);
+  const ignoreKeys: string[] = []; // TODO
+
+  const updatedKeys = Object.keys(updatedFlatten);
+  updatedKeys.forEach((key) => {
+    if (!ignoreKeys.includes(key)) {
+      const value = updatedFlatten[key];
+      del(originLayout, key);
+      if (value !== undefined) {
+        set(originLayout, key, value);
+      }
+    }
+  });
+
+  if (opts?.strict === true) {
+    const originFlatten = toFlattenLayout(originLayout);
+    const originKeys = Object.keys(originFlatten);
+    originKeys.forEach((key) => {
+      if (!ignoreKeys.includes(key)) {
+        if (!updatedKeys.includes(key)) {
+          del(originLayout, key);
+        }
+      }
+    });
+  }
+
+  return originLayout;
+}
diff --git a/packages/util/src/lib/is.ts b/packages/util/src/view/is.ts
similarity index 98%
rename from packages/util/src/lib/is.ts
rename to packages/util/src/view/is.ts
index 9521a3d..46a6791 100644
--- a/packages/util/src/lib/is.ts
+++ b/packages/util/src/view/is.ts
@@ -1,4 +1,4 @@
-import { isColorStr } from './color';
+import { isColorStr } from '../tool/color';
 
 function positiveNum(value: any) {
   return typeof value === 'number' && value >= 0;
diff --git a/packages/util/src/lib/load.ts b/packages/util/src/view/load.ts
similarity index 100%
rename from packages/util/src/lib/load.ts
rename to packages/util/src/view/load.ts
diff --git a/packages/util/src/lib/matrix.ts b/packages/util/src/view/matrix.ts
similarity index 100%
rename from packages/util/src/lib/matrix.ts
rename to packages/util/src/view/matrix.ts
diff --git a/packages/util/src/lib/middleware.ts b/packages/util/src/view/middleware.ts
similarity index 100%
rename from packages/util/src/lib/middleware.ts
rename to packages/util/src/view/middleware.ts
diff --git a/packages/util/src/view/modify-record.ts b/packages/util/src/view/modify-record.ts
new file mode 100644
index 0000000..3da0dce
--- /dev/null
+++ b/packages/util/src/view/modify-record.ts
@@ -0,0 +1,14 @@
+import type { FlattenElement, Element, RecursivePartial, DataLayout, DataGlobal } from '@idraw/types';
+import { flatObject } from '../tool/flat-object';
+
+export function toFlattenElement(elem: Element | RecursivePartial<Element>): FlattenElement {
+  return flatObject(elem, { ignorePaths: ['detail.children'] });
+}
+
+export function toFlattenLayout(layout: DataLayout | RecursivePartial<DataLayout>): FlattenElement {
+  return flatObject(layout);
+}
+
+export function toFlattenGlobal(global: DataGlobal | RecursivePartial<DataLayout>): FlattenElement {
+  return flatObject(global);
+}
diff --git a/packages/util/src/lib/parser.ts b/packages/util/src/view/parser.ts
similarity index 100%
rename from packages/util/src/lib/parser.ts
rename to packages/util/src/view/parser.ts
diff --git a/packages/util/src/lib/point-move-element.ts b/packages/util/src/view/point-move-element.ts
similarity index 100%
rename from packages/util/src/lib/point-move-element.ts
rename to packages/util/src/view/point-move-element.ts
diff --git a/packages/util/src/lib/point.ts b/packages/util/src/view/point.ts
similarity index 100%
rename from packages/util/src/lib/point.ts
rename to packages/util/src/view/point.ts
diff --git a/packages/util/src/view/position.ts b/packages/util/src/view/position.ts
new file mode 100644
index 0000000..aaf7f9b
--- /dev/null
+++ b/packages/util/src/view/position.ts
@@ -0,0 +1,106 @@
+import type { ElementPosition } from '@idraw/types';
+
+export function calcResultMovePosition(opts: { from: ElementPosition; to: ElementPosition }): {
+  from: ElementPosition;
+  to: ElementPosition;
+} | null {
+  const from = [...opts.from];
+  const to = [...opts.to];
+
+  // [] -> [1,2,3] or [1, 2 ,3] -> []
+  if (from.length === 0 || to.length === 0) {
+    return null;
+  }
+
+  // invalid [1] -> [1, 2, 3]
+  if (from.length <= to.length) {
+    for (let i = 0; i < from.length; i++) {
+      if (to[i] === from[i]) {
+        if (i === from.length - 1) {
+          return null;
+        }
+        continue;
+      }
+    }
+  }
+
+  let moveDirection: 'up-down' | 'down-up' | null = null;
+
+  if (from.length >= 1 && to.length >= 1) {
+    // isEffectToIndex
+    // false [2, 4] -> [1, 2]
+    // false [3, 4, 5] -> [4, 5]
+
+    // up -> down
+    // true  [2] -> [4]
+    // true  [2] -> [3, 4]
+    // true  [2, 3] -> [2, 3, 4]
+    if (from.length <= to.length) {
+      if (from.length === 1) {
+        if (from[0] < to[0]) {
+          moveDirection = 'up-down';
+        }
+      } else {
+        for (let i = 0; i < from.length; i++) {
+          if (from[i] === to[i]) {
+            if (from.length === from.length - 1) {
+              moveDirection = 'up-down';
+              break;
+            }
+          } else {
+            break;
+          }
+        }
+      }
+    }
+
+    // down -> up
+    // true  [4] -> [2]
+    // true  [3, 4, 5] -> [3, 3]
+    // true  [3, 4, 5] -> [2]
+    if (from.length >= to.length) {
+      if (to.length === 1) {
+        if (to[0] < from[0]) {
+          // isEffectToIndex = true;
+          moveDirection = 'down-up';
+        }
+      } else {
+        for (let i = 0; i < to.length; i++) {
+          if (i === to.length - 1 && to[i] < from[i]) {
+            // isEffectToIndex = true;
+            moveDirection = 'down-up';
+          }
+          if (from[i] === to[i]) {
+            continue;
+          } else {
+            break;
+          }
+        }
+      }
+    }
+  }
+
+  const startEffectIndex = from.length - 1;
+  const endEffectIndex = to.length - 1;
+  if (moveDirection === 'up-down' && startEffectIndex >= 0) {
+    to[startEffectIndex] -= 1;
+  } else if (moveDirection === 'down-up' && endEffectIndex >= 0) {
+    from[endEffectIndex] += 1;
+  }
+
+  return { from, to };
+}
+
+export function calcRevertMovePosition(opts: { from: ElementPosition; to: ElementPosition }): {
+  from: ElementPosition;
+  to: ElementPosition;
+} | null {
+  const result = calcResultMovePosition(opts);
+  if (!result) {
+    return result;
+  }
+  return {
+    from: [...result.to],
+    to: [...result.from]
+  };
+}
diff --git a/packages/util/src/lib/rect.ts b/packages/util/src/view/rect.ts
similarity index 100%
rename from packages/util/src/lib/rect.ts
rename to packages/util/src/view/rect.ts
diff --git a/packages/util/src/lib/resize-element.ts b/packages/util/src/view/resize-element.ts
similarity index 95%
rename from packages/util/src/lib/resize-element.ts
rename to packages/util/src/view/resize-element.ts
index 961e8b8..310c074 100644
--- a/packages/util/src/lib/resize-element.ts
+++ b/packages/util/src/view/resize-element.ts
@@ -1,5 +1,5 @@
 import type { Element, ElementSize } from '@idraw/types';
-import { formatNumber } from './number';
+import { formatNumber } from '../tool/number';
 
 const doNum = (n: number) => {
   return formatNumber(n, { decimalPlaces: 4 });
@@ -97,7 +97,10 @@ function resizeElement(elem: Element, opts: ResizeOptions) {
   }
 }
 
-export function deepResizeGroupElement(elem: Element<'group'>, size: Pick<Partial<ElementSize>, 'w' | 'h'>): Element<'group'> {
+export function deepResizeGroupElement(
+  elem: Element<'group'>,
+  size: Pick<Partial<ElementSize>, 'w' | 'h'>
+): Element<'group'> {
   const resizeW: number = size.w && size.w > 0 ? size.w : elem.w;
   const resizeH: number = size.h && size.h > 0 ? size.h : elem.h;
   const xRatio = resizeW / elem.w;
diff --git a/packages/util/src/lib/rotate.ts b/packages/util/src/view/rotate.ts
similarity index 100%
rename from packages/util/src/lib/rotate.ts
rename to packages/util/src/view/rotate.ts
diff --git a/packages/util/src/lib/svg-path.ts b/packages/util/src/view/svg-path.ts
similarity index 100%
rename from packages/util/src/lib/svg-path.ts
rename to packages/util/src/view/svg-path.ts
diff --git a/packages/util/src/lib/text.ts b/packages/util/src/view/text.ts
similarity index 100%
rename from packages/util/src/lib/text.ts
rename to packages/util/src/view/text.ts
diff --git a/packages/util/src/lib/vertex.ts b/packages/util/src/view/vertex.ts
similarity index 100%
rename from packages/util/src/lib/vertex.ts
rename to packages/util/src/view/vertex.ts
diff --git a/packages/util/src/lib/view-box.ts b/packages/util/src/view/view-box.ts
similarity index 100%
rename from packages/util/src/lib/view-box.ts
rename to packages/util/src/view/view-box.ts
diff --git a/packages/util/src/lib/view-calc.ts b/packages/util/src/view/view-calc.ts
similarity index 100%
rename from packages/util/src/lib/view-calc.ts
rename to packages/util/src/view/view-calc.ts
diff --git a/packages/util/src/lib/view-content.ts b/packages/util/src/view/view-content.ts
similarity index 98%
rename from packages/util/src/lib/view-content.ts
rename to packages/util/src/view/view-content.ts
index 9e6673b..38974e3 100644
--- a/packages/util/src/lib/view-content.ts
+++ b/packages/util/src/view/view-content.ts
@@ -1,7 +1,7 @@
 import type { Data, ViewSizeInfo, Element, ElementSize, ViewScaleInfo, PointSize } from '@idraw/types';
 import { rotateElementVertexes } from './rotate';
 import {} from './view-calc';
-import { formatNumber } from './number';
+import { formatNumber } from '../tool/number';
 import { is } from './is';
 
 interface ViewCenterContentResult {
diff --git a/tsconfig.web.json b/tsconfig.web.json
index abc8665..aa97f60 100644
--- a/tsconfig.web.json
+++ b/tsconfig.web.json
@@ -3,8 +3,8 @@
     "jsx": "react",
     "declaration": true,
     "sourceMap": false,
-    "target": "ES6",
-    "module": "ES2015",
+    "target": "es2020",
+    "module": "esnext",
     "moduleResolution": "node",
     "allowJs": false,
     "strict": true,
@@ -18,14 +18,13 @@
       "@idraw/types": ["./packages/types/src/index.ts"],
       "@idraw/util": ["./packages/util/src/index.ts"],
       "@idraw/renderer": ["./packages/renderer/src/index.ts"],
-      "@idraw/board": ["./packages/board/src/index.ts"],
-      "@idraw/core": ["./packages/core/src/index.ts"]
+      "@idraw/core": ["./packages/core/src/index.ts"],
+      "idraw": ["./packages/idraw/src/index.ts"]
     }
   },
   "include": [
     "packages/*/src",
-    "packages/*/__tests__",
-    "packages/*/dev"
+    "packages/*/__tests__"
   ],
   "exclude": [
     "packages/*/dist",