From f643cd7d7b06c15f03d0eeff1d0e345426d7edd7 Mon Sep 17 00:00:00 2001
From: chenshenhai <cshenhai@gmail.com>
Date: Sat, 3 Jun 2023 14:11:04 +0800
Subject: [PATCH] feat: add split pane for idraw design

---
 packages/design/dev/data.ts                   | 149 -------
 packages/design/dev/data/components/button.ts |  91 +++++
 .../design/dev/data/components/checkbox.ts    |  91 +++++
 packages/design/dev/data/index.ts             |  11 +
 packages/design/dev/main.tsx                  |  24 +-
 packages/design/src/context.ts                |  74 ++--
 packages/design/src/css/index.less            |  15 +-
 .../design/src/css/modules/panel-layer.less   |  44 ++-
 packages/design/src/css/modules/sketch.less   |  15 +
 .../design/src/css/modules/split-pane.less    |  55 +++
 .../design/src/modules/panel-layer/index.tsx  |  51 ++-
 .../src/modules/panel-layer/layer-tree.tsx    |   8 +-
 packages/design/src/modules/sketch/index.tsx  | 137 ++++---
 .../design/src/modules/split-pane/index.tsx   |   6 +
 .../design/src/modules/split-pane/pane.tsx    |  49 +++
 .../design/src/modules/split-pane/resizer.tsx |  64 +++
 .../src/modules/split-pane/split-pane.tsx     | 374 ++++++++++++++++++
 packages/design/src/types/context.ts          |  25 ++
 packages/design/src/types/data.ts             |  14 +-
 packages/design/src/types/index.ts            |   1 +
 packages/design/src/types/view.ts             |   4 +
 packages/design/src/util/component.ts         |  23 +-
 packages/design/src/util/view-data.ts         |  66 ++++
 packages/design/src/util/view-tree.ts         |  70 ++++
 24 files changed, 1130 insertions(+), 331 deletions(-)
 delete mode 100644 packages/design/dev/data.ts
 create mode 100644 packages/design/dev/data/components/button.ts
 create mode 100644 packages/design/dev/data/components/checkbox.ts
 create mode 100644 packages/design/dev/data/index.ts
 create mode 100644 packages/design/src/css/modules/split-pane.less
 create mode 100644 packages/design/src/modules/split-pane/index.tsx
 create mode 100644 packages/design/src/modules/split-pane/pane.tsx
 create mode 100644 packages/design/src/modules/split-pane/resizer.tsx
 create mode 100644 packages/design/src/modules/split-pane/split-pane.tsx
 create mode 100644 packages/design/src/types/context.ts
 create mode 100644 packages/design/src/util/view-data.ts
 create mode 100644 packages/design/src/util/view-tree.ts

diff --git a/packages/design/dev/data.ts b/packages/design/dev/data.ts
deleted file mode 100644
index 8954ed3..0000000
--- a/packages/design/dev/data.ts
+++ /dev/null
@@ -1,149 +0,0 @@
-import { createUUID } from '@idraw/util';
-import type { DesignData } from '../src';
-
-const data: DesignData = {
-  components: [
-    {
-      uuid: createUUID(),
-      type: 'component',
-      name: 'Button default',
-      x: 50,
-      y: 50,
-      w: 100,
-      h: 100,
-      desc: {
-        bgColor: '#1f1f1f',
-        children: [
-          {
-            uuid: createUUID(),
-            type: 'circle',
-            x: -40,
-            y: 0,
-            w: 100,
-            h: 100,
-            desc: {
-              bgColor: '#f44336'
-            }
-          },
-          {
-            uuid: createUUID(),
-            type: 'circle',
-            x: -20,
-            y: 0,
-            w: 100,
-            h: 100,
-            desc: {
-              bgColor: '#ff9800'
-            }
-          },
-          {
-            uuid: createUUID(),
-            type: 'circle',
-            x: 0,
-            y: 0,
-            w: 100,
-            h: 100,
-            desc: {
-              bgColor: '#ffc106'
-            }
-          },
-          {
-            uuid: createUUID(),
-            type: 'circle',
-            x: 20,
-            y: 0,
-            w: 100,
-            h: 100,
-            desc: {
-              bgColor: '#cddc39'
-            }
-          },
-          {
-            uuid: createUUID(),
-            type: 'circle',
-            x: 40,
-            y: 0,
-            w: 100,
-            h: 100,
-            desc: {
-              bgColor: '#4caf50'
-            }
-          }
-        ]
-      }
-    },
-    {
-      uuid: createUUID(),
-      type: 'component',
-      name: 'Button primary',
-      x: 50,
-      y: 50,
-      w: 100,
-      h: 100,
-      desc: {
-        bgColor: '#f0f0f0',
-        children: [
-          {
-            uuid: createUUID(),
-            type: 'circle',
-            x: -40,
-            y: 0,
-            w: 100,
-            h: 100,
-            desc: {
-              bgColor: '#f44336'
-            }
-          },
-          {
-            uuid: createUUID(),
-            type: 'circle',
-            x: -20,
-            y: 0,
-            w: 100,
-            h: 100,
-            desc: {
-              bgColor: '#ff9800'
-            }
-          },
-          {
-            uuid: createUUID(),
-            type: 'circle',
-            x: 0,
-            y: 0,
-            w: 100,
-            h: 100,
-            desc: {
-              bgColor: '#ffc106'
-            }
-          },
-          {
-            uuid: createUUID(),
-            type: 'circle',
-            x: 20,
-            y: 0,
-            w: 100,
-            h: 100,
-            desc: {
-              bgColor: '#cddc39'
-            }
-          },
-          {
-            uuid: createUUID(),
-            type: 'circle',
-            x: 40,
-            y: 0,
-            w: 100,
-            h: 100,
-            desc: {
-              bgColor: '#4caf50'
-            }
-          }
-        ]
-      }
-    }
-  ],
-  modules: [],
-  pages: []
-};
-
-export default data;
diff --git a/packages/design/dev/data/components/button.ts b/packages/design/dev/data/components/button.ts
new file mode 100644
index 0000000..4a1c670
--- /dev/null
+++ b/packages/design/dev/data/components/button.ts
@@ -0,0 +1,91 @@
+import { createUUID } from '@idraw/util';
+import type { DesignComponent, DesignComponentItem } from '../../../src';
+
+function createButtonItem(variantName: string) {
+  const componentItem: DesignComponentItem = {
+    uuid: createUUID(),
+    type: 'component-item',
+    name: `Button ${variantName}`,
+    x: 50,
+    y: 50,
+    w: 100,
+    h: 100,
+    desc: {
+      children: [
+        {
+          uuid: createUUID(),
+          type: 'circle',
+          x: -40,
+          y: 0,
+          w: 100,
+          h: 100,
+          desc: {
+            bgColor: '#f44336'
+          }
+        },
+        {
+          uuid: createUUID(),
+          type: 'circle',
+          x: -20,
+          y: 0,
+          w: 100,
+          h: 100,
+          desc: {
+            bgColor: '#ff9800'
+          }
+        },
+        {
+          uuid: createUUID(),
+          type: 'circle',
+          x: 0,
+          y: 0,
+          w: 100,
+          h: 100,
+          desc: {
+            bgColor: '#ffc106'
+          }
+        },
+        {
+          uuid: createUUID(),
+          type: 'circle',
+          x: 20,
+          y: 0,
+          w: 100,
+          h: 100,
+          desc: {
+            bgColor: '#cddc39'
+          }
+        },
+        {
+          uuid: createUUID(),
+          type: 'circle',
+          x: 40,
+          y: 0,
+          w: 100,
+          h: 100,
+          desc: {
+            bgColor: '#4caf50'
+          }
+        }
+      ]
+    }
+  };
+  return componentItem;
+}
+
+export function createButton(name: string) {
+  const button: DesignComponent = {
+    uuid: createUUID(),
+    type: 'component',
+    name: `Button ${name}`,
+    x: 50,
+    y: 50,
+    w: 800,
+    h: 400,
+    desc: {
+      default: createButtonItem('default'),
+      variants: [createButtonItem('primary'), createButtonItem('secondary')]
+    }
+  };
+  return button;
+}
diff --git a/packages/design/dev/data/components/checkbox.ts b/packages/design/dev/data/components/checkbox.ts
new file mode 100644
index 0000000..95706ec
--- /dev/null
+++ b/packages/design/dev/data/components/checkbox.ts
@@ -0,0 +1,91 @@
+import { createUUID } from '@idraw/util';
+import type { DesignComponent, DesignComponentItem } from '../../../src';
+
+function createCheckboxItem(variantName: string) {
+  const componentItem: DesignComponentItem = {
+    uuid: createUUID(),
+    type: 'component-item',
+    name: `Checkbox ${variantName}`,
+    x: 50,
+    y: 50,
+    w: 100,
+    h: 100,
+    desc: {
+      children: [
+        {
+          uuid: createUUID(),
+          type: 'rect',
+          x: -40,
+          y: 0,
+          w: 100,
+          h: 100,
+          desc: {
+            bgColor: '#f44336'
+          }
+        },
+        {
+          uuid: createUUID(),
+          type: 'rect',
+          x: -20,
+          y: 0,
+          w: 100,
+          h: 100,
+          desc: {
+            bgColor: '#ff9800'
+          }
+        },
+        {
+          uuid: createUUID(),
+          type: 'rect',
+          x: 0,
+          y: 0,
+          w: 100,
+          h: 100,
+          desc: {
+            bgColor: '#ffc106'
+          }
+        },
+        {
+          uuid: createUUID(),
+          type: 'rect',
+          x: 20,
+          y: 0,
+          w: 100,
+          h: 100,
+          desc: {
+            bgColor: '#cddc39'
+          }
+        },
+        {
+          uuid: createUUID(),
+          type: 'rect',
+          x: 40,
+          y: 0,
+          w: 100,
+          h: 100,
+          desc: {
+            bgColor: '#4caf50'
+          }
+        }
+      ]
+    }
+  };
+  return componentItem;
+}
+
+export function createCheckbox(name: string) {
+  const checkbox: DesignComponent = {
+    uuid: createUUID(),
+    type: 'component',
+    name: `Checkbox ${name}`,
+    x: 50,
+    y: 50,
+    w: 800,
+    h: 400,
+    desc: {
+      default: createCheckboxItem('default'),
+      variants: [createCheckboxItem('primary'), createCheckboxItem('secondary')]
+    }
+  };
+  return checkbox;
+}
diff --git a/packages/design/dev/data/index.ts b/packages/design/dev/data/index.ts
new file mode 100644
index 0000000..aa4c9c4
--- /dev/null
+++ b/packages/design/dev/data/index.ts
@@ -0,0 +1,11 @@
+import type { DesignData } from '../../src';
+import { createButton } from './components/button';
+import { createCheckbox } from './components/checkbox';
+
+const data: DesignData = {
+  components: [createButton('001'), createButton('002'), createCheckbox('001'), createCheckbox('002')],
+  modules: [],
+  pages: []
+};
+
+export default data;
diff --git a/packages/design/dev/main.tsx b/packages/design/dev/main.tsx
index 8568b59..685548e 100644
--- a/packages/design/dev/main.tsx
+++ b/packages/design/dev/main.tsx
@@ -7,19 +7,19 @@ const dom = document.querySelector('#lab') as HTMLDivElement;
 const root = createRoot(dom);
 
 const App = () => {
-  // const style = { margin: 0, padding: 0 }
-  // const [width, setWidth] = useState<number>(window.innerWidth);
-  // const [height, setHeight] = useState<number>(window.innerHeight);
-  // useEffect(() => {
-  //   window.addEventListener('resize', () => {
-  //     setWidth(window.innerWidth);
-  //     setHeight(window.innerHeight);
-  //   });
-  // }, []);
+  const style = { margin: 0, padding: 0 };
+  const [width, setWidth] = useState<number>(window.innerWidth);
+  const [height, setHeight] = useState<number>(window.innerHeight);
+  useEffect(() => {
+    window.addEventListener('resize', () => {
+      setWidth(window.innerWidth);
+      setHeight(window.innerHeight);
+    });
+  }, []);
 
-  const style = { margin: 40 };
-  const width = 800;
-  const height = 600;
+  // const style = { margin: 40 };
+  // const width = 800;
+  // const height = 600;
 
   return <Design width={width} height={height} style={style} designData={data} />;
 };
diff --git a/packages/design/src/context.ts b/packages/design/src/context.ts
index 9cf4b10..1b22cc6 100644
--- a/packages/design/src/context.ts
+++ b/packages/design/src/context.ts
@@ -1,28 +1,6 @@
 import { createContext } from 'react';
-import type { Dispatch } from 'react';
-import type { Data } from '@idraw/types';
-import { DesignData } from './types';
-
-export interface DesignState {
-  designData: DesignData | null;
-  viewDrawData: Data | null;
-  viewDrawUUID: string | null;
-  themeMode: 'light' | 'dark';
-}
-
-export type DesignActionType = 'updateThemeMode' | 'updateDesignData';
-
-export type DesignAction = {
-  type: DesignActionType;
-  payload: Partial<DesignState>;
-};
-
-export type DesignDispatch = Dispatch<DesignAction>;
-
-export interface DesignContext {
-  state?: DesignState;
-  dispatch?: DesignDispatch;
-}
+import { DesignData, DesignState, DesignAction, DesignContext } from './types';
+import { parseComponentsToDrawData } from './util/view-data';
 
 export function createDesignData(): DesignData {
   return {
@@ -32,6 +10,16 @@ export function createDesignData(): DesignData {
   };
 }
 
+export function createDesignContextState(opts?: Partial<DesignState>): DesignState {
+  return {
+    designData: opts?.designData || createDesignData(),
+    activeDrawDataType: 'component', // TODO
+    themeMode: opts?.themeMode || 'light',
+    viewDrawData: null,
+    viewDrawUUID: null
+  };
+}
+
 export function createDesignReducer(state: DesignState, action: DesignAction): DesignState {
   switch (action.type) {
     case 'updateThemeMode': {
@@ -52,24 +40,40 @@ export function createDesignReducer(state: DesignState, action: DesignAction): D
       return {
         ...state,
         ...{
-          data: action?.payload?.designData
+          designData: action?.payload?.designData
         }
       };
     }
+    case 'switchDrawDataType': {
+      if (!action?.payload?.activeDrawDataType) {
+        return state;
+      }
+      let newState = {
+        ...state,
+        ...{
+          activeDrawDataType: action?.payload.activeDrawDataType
+        }
+      };
+      if (action.payload.activeDrawDataType === 'component') {
+        newState = {
+          ...newState,
+          viewDrawData: parseComponentsToDrawData(state.designData?.components || [])
+        };
+      }
+
+      return newState;
+    }
+
     default:
       return state;
   }
 }
 
-export function createDesignContextState(opts?: Partial<DesignState>): DesignState {
-  return {
-    designData: opts?.designData || createDesignData(),
-    themeMode: opts?.themeMode || 'light',
-    viewDrawData: null,
-    viewDrawUUID: null
-  };
-}
-
-export const Context = createContext<DesignContext>({});
+export const Context = createContext<DesignContext>({
+  state: createDesignContextState(),
+  dispatch: () => {
+    return;
+  }
+});
 
 export const Provider = Context.Provider;
diff --git a/packages/design/src/css/index.less b/packages/design/src/css/index.less
index 3454289..9302367 100644
--- a/packages/design/src/css/index.less
+++ b/packages/design/src/css/index.less
@@ -1,9 +1,10 @@
-@import "./theme/dark.less";
-@import "./theme/light.less";
+@import './theme/dark.less';
+@import './theme/light.less';
 
-@import "./icons/index.less";
+@import './icons/index.less';
 
-@import "./modules/header.less";
-@import "./modules/sketch.less";
-@import "./modules/toolbar.less";
-@import "./modules/panel-layer.less";
+@import './modules/header.less';
+@import './modules/sketch.less';
+@import './modules/toolbar.less';
+@import './modules/panel-layer.less';
+@import './modules/split-pane.less';
diff --git a/packages/design/src/css/modules/panel-layer.less b/packages/design/src/css/modules/panel-layer.less
index 9f3a476..c270600 100644
--- a/packages/design/src/css/modules/panel-layer.less
+++ b/packages/design/src/css/modules/panel-layer.less
@@ -10,28 +10,18 @@
 
   .@{mod-panel-layer}-header {
     height: 40px;
+    box-sizing: border-box;
+    // border-bottom: 1px solid;
+    // border-color: ~'var(--@{prefix}-border-color)';
   }
 
   .@{mod-panel-layer}-content {
     flex: 1;
     // display: flex;
     width: 100%;
-  }
-
-  .@{mod-panel-layer}-footer {
-    height: 40px;
-  }
-
-  .@{mod-panel-layer}-tabs {
-    // width: 100%;
-    // display: flex;
-    // padding-bottom: 100px;
-
-    .@{mod-panel-layer}-tab-title {
-      font-size: 16;
-      margin: 0 4px;
-    }
+    overflow: auto;
 
+    // fix antd style
     .ant-tree-switcher {
       display: flex;
       justify-content: center;
@@ -44,4 +34,28 @@
       text-overflow: ellipsis;
     }
   }
+
+  .@{mod-panel-layer}-footer {
+    height: 32px;
+    box-sizing: border-box;
+    border-top: 1px solid;
+    border-color: ~'var(--@{prefix}-border-color)';
+  }
+
+  .@{mod-panel-layer}-tabs {
+    // width: 100%;
+    // display: flex;
+    // padding-bottom: 100px;
+
+    .@{mod-panel-layer}-tab-title {
+      font-size: 16;
+      margin: 0 4px;
+    }
+    .@{mod-panel-layer}-tab-content {
+      flex: 1;
+      width: 100%;
+      height: 100%;
+      overflow: auto;
+    }
+  }
 }
diff --git a/packages/design/src/css/modules/sketch.less b/packages/design/src/css/modules/sketch.less
index 7939831..c43217f 100644
--- a/packages/design/src/css/modules/sketch.less
+++ b/packages/design/src/css/modules/sketch.less
@@ -47,4 +47,19 @@
     left: 0;
     right: 0;
   }
+  .@{mod-sketch}-left {
+    border-right: 1px solid;
+    border-color: ~'var(--@{prefix}-border-color)';
+    height: 100%;
+  }
+
+  .@{mod-sketch}-right {
+    border-left: 1px solid;
+    border-color: ~'var(--@{prefix}-border-color)';
+    height: 100%;
+  }
+
+  .@{mod-sketch}-center {
+    display: block;
+  }
 }
diff --git a/packages/design/src/css/modules/split-pane.less b/packages/design/src/css/modules/split-pane.less
new file mode 100644
index 0000000..d0e90c2
--- /dev/null
+++ b/packages/design/src/css/modules/split-pane.less
@@ -0,0 +1,55 @@
+// @import '../variable.less';
+
+@mod-split-pane: ~'@{prefix}-mod-split-pane';
+
+.@{mod-split-pane} {
+  // background: #000;
+  opacity: 0.2;
+  z-index: 1;
+  -moz-box-sizing: border-box;
+  -webkit-box-sizing: border-box;
+  box-sizing: border-box;
+  -moz-background-clip: padding;
+  -webkit-background-clip: padding;
+  background-clip: padding-box;
+
+  &:hover {
+    -webkit-transition: all 2s ease;
+    transition: all 2s ease;
+  }
+
+  &.horizontal {
+    height: 11px;
+    margin: -5px 0;
+    border-top: 5px solid rgba(255, 255, 255, 0);
+    border-bottom: 5px solid rgba(255, 255, 255, 0);
+    cursor: row-resize;
+    width: 100%;
+  }
+
+  &.horizontal:hover {
+    border-top: 5px solid rgba(0, 0, 0, 0.5);
+    border-bottom: 5px solid rgba(0, 0, 0, 0.5);
+  }
+
+  &.vertical {
+    width: 11px;
+    margin: 0 -6px;
+    border-left: 5px solid rgba(255, 255, 255, 0);
+    border-right: 5px solid rgba(255, 255, 255, 0);
+    cursor: col-resize;
+  }
+
+  &.vertical:hover {
+    border-left: 5px solid rgba(0, 0, 0, 0.5);
+    border-right: 5px solid rgba(0, 0, 0, 0.5);
+  }
+
+  &.disabled {
+    cursor: not-allowed;
+  }
+
+  &.disabled:hover {
+    border-color: transparent;
+  }
+}
diff --git a/packages/design/src/modules/panel-layer/index.tsx b/packages/design/src/modules/panel-layer/index.tsx
index 11c785d..a09f257 100644
--- a/packages/design/src/modules/panel-layer/index.tsx
+++ b/packages/design/src/modules/panel-layer/index.tsx
@@ -1,41 +1,28 @@
-import React from 'react';
+import React, { useContext } from 'react';
 import type { CSSProperties } from 'react';
 import classnames from 'classnames';
 import Tabs from 'antd/es/tabs';
 import type { TabsProps } from 'antd';
-import { prefixName } from './config';
-import { LayerTree } from './layer-tree';
 import FileOutlined from '@ant-design/icons/FileOutlined';
 import AppstoreOutlined from '@ant-design/icons/AppstoreOutlined';
 import CalculatorOutlined from '@ant-design/icons/CalculatorOutlined';
+import { prefixName } from './config';
+import { LayerTree } from './layer-tree';
+import { Context } from '../../context';
+import { DesignDrawDataType } from '../../types';
 
 const items: TabsProps['items'] = [
   {
     key: 'page',
-    label: <FileOutlined className={prefixName('tab', 'title')} />,
-    children: (
-      <div style={{ width: '100%', overflow: 'auto' }}>
-        <LayerTree type="page" />
-      </div>
-    )
+    label: <FileOutlined className={prefixName('tab', 'title')} />
   },
   {
     key: 'module',
-    label: <AppstoreOutlined className={prefixName('tab', 'title')} />,
-    children: (
-      <div style={{ width: '100%', overflow: 'auto' }}>
-        <LayerTree type="module" />
-      </div>
-    )
+    label: <AppstoreOutlined className={prefixName('tab', 'title')} />
   },
   {
     key: 'component',
-    label: <CalculatorOutlined className={prefixName('tab', 'title')} />,
-    children: (
-      <div style={{ width: '100%', overflow: 'auto' }}>
-        <LayerTree type="component" />
-      </div>
-    )
+    label: <CalculatorOutlined className={prefixName('tab', 'title')} />
   }
 ];
 
@@ -46,15 +33,27 @@ export interface PanelLayerProps {
 
 export const PanelLayer = (props: PanelLayerProps) => {
   const { className, style } = props;
+  const { state, dispatch } = useContext(Context);
 
-  const defaultTabKey = items[2].key;
   return (
     <div style={style} className={classnames(prefixName(), className)}>
-      {/* <div className={prefixName('header')}>header</div> */}
-      <div className={prefixName('content')}>
-        <Tabs className={prefixName('tabs')} defaultActiveKey={defaultTabKey} centered items={items} size="small" />
+      <div className={prefixName('header')}>
+        <Tabs
+          className={prefixName('tabs')}
+          tabBarStyle={{ marginBottom: 0 }}
+          activeKey={state?.activeDrawDataType as string}
+          centered
+          items={items}
+          size="small"
+          onTabClick={(activeKey: string) => {
+            dispatch({ type: 'switchDrawDataType', payload: { activeDrawDataType: activeKey as DesignDrawDataType } });
+          }}
+        />
       </div>
-      {/* <div className={prefixName('footer')}>footer</div> */}
+      <div className={prefixName('content')}>
+        <LayerTree type={state.activeDrawDataType} />
+      </div>
+      <div className={prefixName('footer')}>footer</div>
     </div>
   );
 };
diff --git a/packages/design/src/modules/panel-layer/layer-tree.tsx b/packages/design/src/modules/panel-layer/layer-tree.tsx
index ca8baec..93cfb2f 100644
--- a/packages/design/src/modules/panel-layer/layer-tree.tsx
+++ b/packages/design/src/modules/panel-layer/layer-tree.tsx
@@ -8,7 +8,7 @@ import { parseComponentViewTree } from '../../util/component';
 
 import type { CSSProperties } from 'react';
 import type { DataNode, TreeProps } from 'antd/es/tree';
-import type { DesignItemType } from '../../types';
+import type { DesignDrawDataType } from '../../types';
 
 const { DirectoryTree } = Tree;
 const baseName = 'layer-tree';
@@ -16,7 +16,7 @@ const baseName = 'layer-tree';
 export interface LayerTreeProps {
   className?: string;
   style?: CSSProperties;
-  type: DesignItemType;
+  type: DesignDrawDataType;
 }
 
 export const LayerTree = (props: LayerTreeProps) => {
@@ -24,18 +24,18 @@ export const LayerTree = (props: LayerTreeProps) => {
   const { state } = useContext(Context);
 
   const onSelect: TreeProps['onSelect'] = (selectedKeys, info) => {
+    // TODO
     console.log('selected', selectedKeys, info);
   };
 
   let treeData: DataNode[] = [];
-
   if (type === 'component') {
     treeData = parseComponentViewTree(state?.designData || null);
   }
 
   return (
     <div style={style} className={classnames(prefixName(baseName), className)}>
-      <DirectoryTree showLine blockNode switcherIcon={<DownOutlined />} icon={null} defaultExpandedKeys={['0-0-0']} onSelect={onSelect} treeData={treeData} />
+      <DirectoryTree showLine blockNode switcherIcon={<DownOutlined />} icon={null} onSelect={onSelect} treeData={treeData} />
     </div>
   );
 };
diff --git a/packages/design/src/modules/sketch/index.tsx b/packages/design/src/modules/sketch/index.tsx
index ede8caa..d8919c8 100644
--- a/packages/design/src/modules/sketch/index.tsx
+++ b/packages/design/src/modules/sketch/index.tsx
@@ -2,7 +2,6 @@ import React, { useEffect, useRef, useState } from 'react';
 import classnames from 'classnames';
 import { Core, MiddlewareScroller, MiddlewareSelector } from '@idraw/core';
 import { calcElementsContextSize } from '@idraw/util';
-import Drawer from 'antd/es/drawer';
 import { getData } from '../../data';
 import { Toolbar } from '../toolbar';
 import { PanelLayer } from '../panel-layer';
@@ -10,9 +9,11 @@ import { Header } from '../header';
 import type { CSSProperties } from 'react';
 import { createPrefixName } from '../../css';
 import { HEADER_HEIGHT } from './layout';
+import SplitPane from '../split-pane';
 
 const modName = 'mod-sketch';
-const siderWidth = 200;
+const leftSiderDefaultWidth = 240;
+const rightSiderDefaultWidth = 200;
 
 const prefixName = createPrefixName(modName);
 
@@ -26,8 +27,6 @@ export interface SketchProps {
 export const Sketch = (props: SketchProps) => {
   const ref = useRef<HTMLDivElement>(null);
   const refCore = useRef<Core | null>(null);
-  const refLeftDOM = useRef<HTMLDivElement | null>(null);
-  const refRighttDOM = useRef<HTMLDivElement | null>(null);
   const { className, style, width, height } = props;
   const data = getData();
   const devicePixelRatio = window.devicePixelRatio;
@@ -35,11 +34,15 @@ export const Sketch = (props: SketchProps) => {
   const [openLeftSider, setOpenLeftSider] = useState<boolean>(true);
   const [openRightSider, setOpenRightSider] = useState<boolean>(false);
 
+  const [leftWidth, setLeftWidth] = useState<number>(openLeftSider ? leftSiderDefaultWidth : 0);
+  const [rightWidth, setRightWidth] = useState<number>(openRightSider ? rightSiderDefaultWidth : 0);
+  const [centerWidth, setCenterWidth] = useState<number>(width - leftWidth - rightWidth);
+
   useEffect(() => {
     if (ref?.current) {
       if (!refCore?.current) {
         const options = {
-          width,
+          width: centerWidth,
           height: height - HEADER_HEIGHT,
           devicePixelRatio
         };
@@ -52,90 +55,98 @@ export const Sketch = (props: SketchProps) => {
     }
   }, []);
 
+  useEffect(() => {
+    const prevWidth = leftWidth + centerWidth + rightWidth;
+    let newLeftWidth = Math.floor(width * (leftWidth / prevWidth));
+    let newRightWidth = Math.floor(width * (rightWidth / prevWidth));
+
+    newLeftWidth = Math.min(newLeftWidth, leftSiderDefaultWidth);
+    newRightWidth = Math.min(newRightWidth, rightSiderDefaultWidth);
+
+    const newCenterWidth = width - newLeftWidth - newRightWidth;
+    setLeftWidth(newLeftWidth);
+    setRightWidth(newRightWidth);
+    setCenterWidth(newCenterWidth);
+  }, [height, width]);
+
   useEffect(() => {
     if (!refCore?.current) {
       return;
     }
     const core = refCore.current;
-
     const contextSize = calcElementsContextSize(data.elements, { viewWidth: width, viewHeight: height });
     core.resize({
-      width,
+      width: centerWidth,
       height: height - HEADER_HEIGHT,
       devicePixelRatio,
       ...contextSize
     });
-  }, [height, width]);
+  }, [height, centerWidth]);
 
   return (
     <div className={classnames(prefixName(), className)} style={{ ...style, ...{ width, height, padding: 0 } }}>
       <div className={prefixName('header')} style={{ height: HEADER_HEIGHT }}>
         <Header />
       </div>
-      <div ref={ref} className={prefixName('content')} style={{ top: HEADER_HEIGHT }}></div>
-      <div ref={refLeftDOM}></div>
-      <div ref={refRighttDOM}></div>
+      <div className={prefixName('content')} style={{ top: HEADER_HEIGHT }}>
+        <SplitPane
+          split="vertical"
+          defaultSize={centerWidth + rightWidth}
+          allowResize
+          onChange={(px: number) => {
+            setCenterWidth(px - rightWidth);
+            setLeftWidth(width - px);
+          }}
+          pane1Style={{
+            width: leftWidth
+          }}
+          pane2Style={{
+            width: centerWidth + rightWidth
+          }}
+        >
+          <div>
+            <PanelLayer className={prefixName('left')} />
+          </div>
+          <div style={{ width: centerWidth + rightWidth, display: 'flex', flexDirection: 'row' }}>
+            <div ref={ref} className={prefixName('center')} style={{ width: centerWidth, height: height - HEADER_HEIGHT }}></div>
+            <div className={prefixName('right')} style={{ width: rightWidth, height: height - HEADER_HEIGHT }}>
+              Right
+            </div>
+          </div>
+        </SplitPane>
+      </div>
       <Toolbar
         className={prefixName('toolbar-position')}
         openLeftSider={openLeftSider}
         openRightSider={openRightSider}
         onClickToggleLayer={() => {
-          setOpenLeftSider(openLeftSider ? false : true);
+          const open = openLeftSider ? false : true;
+
+          let newLeftWidth = leftWidth;
+          if (open) {
+            newLeftWidth = leftSiderDefaultWidth;
+          } else {
+            newLeftWidth = 0;
+          }
+          setLeftWidth(newLeftWidth);
+          setCenterWidth(width - newLeftWidth - rightWidth);
+          setRightWidth(rightWidth);
+          setOpenLeftSider(open);
         }}
         onClickToggleSetting={() => {
-          setOpenRightSider(openRightSider ? false : true);
+          const open = openRightSider ? false : true;
+          let newRightWidth = rightWidth;
+          if (open) {
+            newRightWidth = rightSiderDefaultWidth;
+          } else {
+            newRightWidth = 0;
+          }
+          setLeftWidth(leftWidth);
+          setCenterWidth(width - leftWidth - newRightWidth);
+          setRightWidth(newRightWidth);
+          setOpenRightSider(open);
         }}
       />
-      <Drawer
-        // title="left Drawer"
-        placement="left"
-        closable={false}
-        onClose={() => {
-          console.log('on close left');
-          setOpenLeftSider(false);
-        }}
-        mask={false}
-        open={openLeftSider}
-        getContainer={() => {
-          return refLeftDOM.current as HTMLDivElement;
-        }}
-        width={siderWidth}
-        bodyStyle={{
-          padding: 0
-        }}
-        rootStyle={{
-          position: 'absolute',
-          top: 0,
-          bottom: 0,
-          left: 0
-        }}
-      >
-        <PanelLayer />
-      </Drawer>
-      <Drawer
-        title="right Drawer"
-        placement="right"
-        onClose={() => {
-          console.log('on close right');
-          setOpenRightSider(false);
-        }}
-        mask={false}
-        open={openRightSider}
-        getContainer={() => {
-          return refRighttDOM.current as HTMLDivElement;
-        }}
-        width={siderWidth}
-        rootStyle={{
-          position: 'absolute',
-          right: 0,
-          bottom: 0,
-          left: 0
-        }}
-      >
-        <p>Some contents...</p>
-        <p>Some contents...</p>
-        <p>Some contents...</p>
-      </Drawer>
     </div>
   );
 };
diff --git a/packages/design/src/modules/split-pane/index.tsx b/packages/design/src/modules/split-pane/index.tsx
new file mode 100644
index 0000000..0298c51
--- /dev/null
+++ b/packages/design/src/modules/split-pane/index.tsx
@@ -0,0 +1,6 @@
+// Thanks to: https://github.com/tomkp/react-split-pane/blob/master/src/index.js
+import SplitPane from './split-pane';
+import Pane from './pane';
+
+export default SplitPane;
+export { Pane };
diff --git a/packages/design/src/modules/split-pane/pane.tsx b/packages/design/src/modules/split-pane/pane.tsx
new file mode 100644
index 0000000..424aef6
--- /dev/null
+++ b/packages/design/src/modules/split-pane/pane.tsx
@@ -0,0 +1,49 @@
+// Thanks to: https://github.com/tomkp/react-split-pane/blob/master/src/Pane.js
+/* eslint-disable @typescript-eslint/ban-ts-comment */
+// @ts-nocheck
+import React from 'react';
+
+class Pane extends React.PureComponent {
+  render() {
+    const { children, className, split, style: styleProps, size, eleRef } = this.props;
+
+    const classes = ['Pane', split, className];
+
+    let style = {
+      flex: 1,
+      position: 'relative',
+      outline: 'none'
+    };
+
+    if (size !== undefined) {
+      if (split === 'vertical') {
+        style.width = size;
+      } else {
+        style.height = size;
+        style.display = 'flex';
+      }
+      style.flex = 'none';
+    }
+
+    style = Object.assign({}, style, styleProps || {});
+
+    return (
+      <div ref={eleRef} className={classes.join(' ')} style={style}>
+        {children}
+      </div>
+    );
+  }
+}
+
+// Pane.propTypes = {
+//   className: PropTypes.string.isRequired,
+//   children: PropTypes.node.isRequired,
+//   size: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
+//   split: PropTypes.oneOf(['vertical', 'horizontal']),
+//   style: stylePropType,
+//   eleRef: PropTypes.func,
+// };
+
+// Pane.defaultProps = {};
+
+export default Pane;
diff --git a/packages/design/src/modules/split-pane/resizer.tsx b/packages/design/src/modules/split-pane/resizer.tsx
new file mode 100644
index 0000000..8f70b6f
--- /dev/null
+++ b/packages/design/src/modules/split-pane/resizer.tsx
@@ -0,0 +1,64 @@
+// Thanks to: https://github.com/tomkp/react-split-pane/blob/master/src/Resizer.js
+/* eslint-disable @typescript-eslint/ban-ts-comment */
+// @ts-nocheck
+import React from 'react';
+import { createPrefixName } from '../../css';
+
+const modName = 'mod-split-pane';
+
+const prefixName = createPrefixName(modName);
+
+export const RESIZER_DEFAULT_CLASSNAME = prefixName();
+
+class Resizer extends React.Component {
+  render() {
+    const { className, onClick, onDoubleClick, onMouseDown, onTouchEnd, onTouchStart, resizerClassName = RESIZER_DEFAULT_CLASSNAME, split, style } = this.props;
+    const classes = [resizerClassName, split, className];
+
+    return (
+      <span
+        role="presentation"
+        className={classes.join(' ')}
+        style={style}
+        onMouseDown={(event) => onMouseDown(event)}
+        onTouchStart={(event) => {
+          event.preventDefault();
+          onTouchStart(event);
+        }}
+        onTouchEnd={(event) => {
+          event.preventDefault();
+          onTouchEnd(event);
+        }}
+        onClick={(event) => {
+          if (onClick) {
+            event.preventDefault();
+            onClick(event);
+          }
+        }}
+        onDoubleClick={(event) => {
+          if (onDoubleClick) {
+            event.preventDefault();
+            onDoubleClick(event);
+          }
+        }}
+      />
+    );
+  }
+}
+
+// Resizer.propTypes = {
+//   className: PropTypes.string.isRequired,
+//   onClick: PropTypes.func,
+//   onDoubleClick: PropTypes.func,
+//   onMouseDown: PropTypes.func.isRequired,
+//   onTouchStart: PropTypes.func.isRequired,
+//   onTouchEnd: PropTypes.func.isRequired,
+//   split: PropTypes.oneOf(['vertical', 'horizontal']),
+//   style: stylePropType,
+//   resizerClassName: PropTypes.string.isRequired,
+// };
+// Resizer.defaultProps = {
+//   resizerClassName: RESIZER_DEFAULT_CLASSNAME,
+// };
+
+export default Resizer;
diff --git a/packages/design/src/modules/split-pane/split-pane.tsx b/packages/design/src/modules/split-pane/split-pane.tsx
new file mode 100644
index 0000000..a141d4b
--- /dev/null
+++ b/packages/design/src/modules/split-pane/split-pane.tsx
@@ -0,0 +1,374 @@
+// Thanks to: https://github.com/tomkp/react-split-pane/blob/master/src/SplitPane.js
+/* eslint-disable @typescript-eslint/ban-ts-comment */
+// @ts-nocheck
+import React from 'react';
+// import PropTypes from 'prop-types';
+// import stylePropType from 'react-style-proptype';
+// import { polyfill } from 'react-lifecycles-compat';
+
+import Pane from './pane';
+import Resizer, { RESIZER_DEFAULT_CLASSNAME } from './resizer';
+
+function unFocus(document, window) {
+  if (document.selection) {
+    document.selection.empty();
+  } else {
+    try {
+      window.getSelection().removeAllRanges();
+      // eslint-disable-next-line no-empty
+    } catch (e) {}
+  }
+}
+
+function getDefaultSize(defaultSize, minSize, maxSize, draggedSize) {
+  if (typeof draggedSize === 'number') {
+    const min = typeof minSize === 'number' ? minSize : 0;
+    const max = typeof maxSize === 'number' && maxSize >= 0 ? maxSize : Infinity;
+    return Math.max(min, Math.min(max, draggedSize));
+  }
+  if (defaultSize !== undefined) {
+    return defaultSize;
+  }
+  return minSize;
+}
+
+function removeNullChildren(children) {
+  return React.Children.toArray(children).filter((c) => c);
+}
+class SplitPane extends React.Component<any, any> {
+  constructor(props) {
+    super(props);
+
+    this.onMouseDown = this.onMouseDown.bind(this);
+    this.onTouchStart = this.onTouchStart.bind(this);
+    this.onMouseMove = this.onMouseMove.bind(this);
+    this.onTouchMove = this.onTouchMove.bind(this);
+    this.onMouseUp = this.onMouseUp.bind(this);
+
+    // order of setting panel sizes.
+    // 1. size
+    // 2. getDefaultSize(defaultSize, minsize, maxSize)
+
+    const { size, defaultSize, minSize, maxSize, primary } = props;
+
+    const initialSize = size !== undefined ? size : getDefaultSize(defaultSize, minSize, maxSize, null);
+
+    this.state = {
+      active: false,
+      resized: false,
+      pane1Size: primary === 'first' ? initialSize : undefined,
+      pane2Size: primary === 'second' ? initialSize : undefined,
+
+      // these are props that are needed in static functions. ie: gDSFP
+      instanceProps: {
+        size
+      }
+    };
+  }
+
+  componentDidMount() {
+    document.addEventListener('mouseup', this.onMouseUp);
+    document.addEventListener('mousemove', this.onMouseMove);
+    document.addEventListener('touchmove', this.onTouchMove);
+    this.setState(SplitPane.getSizeUpdate(this.props, this.state));
+  }
+
+  static getDerivedStateFromProps(nextProps, prevState) {
+    return SplitPane.getSizeUpdate(nextProps, prevState);
+  }
+
+  componentWillUnmount() {
+    document.removeEventListener('mouseup', this.onMouseUp);
+    document.removeEventListener('mousemove', this.onMouseMove);
+    document.removeEventListener('touchmove', this.onTouchMove);
+  }
+
+  onMouseDown(event) {
+    const eventWithTouches = Object.assign({}, event, {
+      touches: [{ clientX: event.clientX, clientY: event.clientY }]
+    });
+    this.onTouchStart(eventWithTouches);
+  }
+
+  onTouchStart(event) {
+    const { allowResize, onDragStarted, split } = this.props;
+    if (allowResize) {
+      unFocus(document, window);
+      const position = split === 'vertical' ? event.touches[0].clientX : event.touches[0].clientY;
+
+      if (typeof onDragStarted === 'function') {
+        onDragStarted();
+      }
+      this.setState({
+        active: true,
+        position
+      });
+    }
+  }
+
+  onMouseMove(event) {
+    const eventWithTouches = Object.assign({}, event, {
+      touches: [{ clientX: event.clientX, clientY: event.clientY }]
+    });
+    this.onTouchMove(eventWithTouches);
+  }
+
+  onTouchMove(event) {
+    const { allowResize, maxSize, minSize, onChange, split, step } = this.props;
+    const { active, position } = this.state;
+
+    if (allowResize && active) {
+      unFocus(document, window);
+      const isPrimaryFirst = this.props.primary === 'first';
+      const ref = isPrimaryFirst ? this.pane1 : this.pane2;
+      const ref2 = isPrimaryFirst ? this.pane2 : this.pane1;
+      if (ref) {
+        const node = ref;
+        const node2 = ref2;
+
+        if (node.getBoundingClientRect) {
+          const width = node.getBoundingClientRect().width;
+          const height = node.getBoundingClientRect().height;
+          const current = split === 'vertical' ? event.touches[0].clientX : event.touches[0].clientY;
+          const size = split === 'vertical' ? width : height;
+          let positionDelta = position - current;
+          if (step) {
+            if (Math.abs(positionDelta) < step) {
+              return;
+            }
+            // Integer division
+            // eslint-disable-next-line no-bitwise
+            positionDelta = ~~(positionDelta / step) * step;
+          }
+          let sizeDelta = isPrimaryFirst ? positionDelta : -positionDelta;
+
+          const pane1Order = parseInt(window.getComputedStyle(node).order);
+          const pane2Order = parseInt(window.getComputedStyle(node2).order);
+          if (pane1Order > pane2Order) {
+            sizeDelta = -sizeDelta;
+          }
+
+          let newMaxSize = maxSize;
+          if (maxSize !== undefined && maxSize <= 0) {
+            const splitPane = this.splitPane;
+            if (split === 'vertical') {
+              newMaxSize = splitPane.getBoundingClientRect().width + maxSize;
+            } else {
+              newMaxSize = splitPane.getBoundingClientRect().height + maxSize;
+            }
+          }
+
+          let newSize = size - sizeDelta;
+          const newPosition = position - positionDelta;
+
+          if (newSize < minSize) {
+            newSize = minSize;
+          } else if (maxSize !== undefined && newSize > newMaxSize) {
+            newSize = newMaxSize;
+          } else {
+            this.setState({
+              position: newPosition,
+              resized: true
+            });
+          }
+
+          if (onChange) onChange(newSize);
+
+          this.setState({
+            draggedSize: newSize,
+            [isPrimaryFirst ? 'pane1Size' : 'pane2Size']: newSize
+          });
+        }
+      }
+    }
+  }
+
+  onMouseUp() {
+    const { allowResize, onDragFinished } = this.props;
+    const { active, draggedSize } = this.state;
+    if (allowResize && active) {
+      if (typeof onDragFinished === 'function') {
+        onDragFinished(draggedSize);
+      }
+      this.setState({ active: false });
+    }
+  }
+
+  // we have to check values since gDSFP is called on every render and more in StrictMode
+  static getSizeUpdate(props, state) {
+    const newState = {};
+    const { instanceProps } = state;
+
+    if (instanceProps.size === props.size && props.size !== undefined) {
+      return {};
+    }
+
+    const newSize = props.size !== undefined ? props.size : getDefaultSize(props.defaultSize, props.minSize, props.maxSize, state.draggedSize);
+
+    if (props.size !== undefined) {
+      newState.draggedSize = newSize;
+    }
+
+    const isPanel1Primary = props.primary === 'first';
+
+    newState[isPanel1Primary ? 'pane1Size' : 'pane2Size'] = newSize;
+    newState[isPanel1Primary ? 'pane2Size' : 'pane1Size'] = undefined;
+
+    newState.instanceProps = { size: props.size };
+
+    return newState;
+  }
+
+  render() {
+    const {
+      allowResize,
+      children,
+      className,
+      onResizerClick,
+      onResizerDoubleClick,
+      paneClassName,
+      pane1ClassName,
+      pane2ClassName,
+      paneStyle,
+      pane1Style: pane1StyleProps,
+      pane2Style: pane2StyleProps,
+      resizerClassName,
+      resizerStyle,
+      split,
+      style: styleProps
+    } = this.props;
+
+    const { pane1Size, pane2Size } = this.state;
+
+    const disabledClass = allowResize ? '' : 'disabled';
+    const resizerClassNamesIncludingDefault = resizerClassName ? `${resizerClassName} ${RESIZER_DEFAULT_CLASSNAME}` : resizerClassName;
+
+    const notNullChildren = removeNullChildren(children);
+
+    const style = {
+      display: 'flex',
+      flex: 1,
+      height: '100%',
+      position: 'absolute',
+      outline: 'none',
+      overflow: 'hidden',
+      MozUserSelect: 'text',
+      WebkitUserSelect: 'text',
+      msUserSelect: 'text',
+      userSelect: 'text',
+      ...styleProps
+    };
+
+    if (split === 'vertical') {
+      Object.assign(style, {
+        flexDirection: 'row',
+        left: 0,
+        right: 0
+      });
+    } else {
+      Object.assign(style, {
+        bottom: 0,
+        flexDirection: 'column',
+        minHeight: '100%',
+        top: 0,
+        width: '100%'
+      });
+    }
+
+    const classes = ['SplitPane', className, split, disabledClass];
+
+    const pane1Style = { ...paneStyle, ...pane1StyleProps };
+    const pane2Style = { ...paneStyle, ...pane2StyleProps };
+
+    const pane1Classes = ['Pane1', paneClassName, pane1ClassName].join(' ');
+    const pane2Classes = ['Pane2', paneClassName, pane2ClassName].join(' ');
+
+    return (
+      <div
+        className={classes.join(' ')}
+        ref={(node) => {
+          this.splitPane = node;
+        }}
+        style={style}
+      >
+        <Pane
+          className={pane1Classes}
+          key="pane1"
+          eleRef={(node) => {
+            this.pane1 = node;
+          }}
+          size={pane1Size}
+          split={split}
+          style={pane1Style}
+        >
+          {notNullChildren[0]}
+        </Pane>
+        <Resizer
+          className={disabledClass}
+          onClick={onResizerClick}
+          onDoubleClick={onResizerDoubleClick}
+          onMouseDown={this.onMouseDown}
+          onTouchStart={this.onTouchStart}
+          onTouchEnd={this.onMouseUp}
+          key="resizer"
+          resizerClassName={resizerClassNamesIncludingDefault}
+          split={split}
+          style={resizerStyle || {}}
+        />
+        <Pane
+          className={pane2Classes}
+          key="pane2"
+          eleRef={(node) => {
+            this.pane2 = node;
+          }}
+          size={pane2Size}
+          split={split}
+          style={pane2Style}
+        >
+          {notNullChildren[1]}
+        </Pane>
+      </div>
+    );
+  }
+}
+
+// SplitPane.propTypes = {
+//   allowResize: PropTypes.bool,
+//   children: PropTypes.arrayOf(PropTypes.node).isRequired,
+//   className: PropTypes.string,
+//   primary: PropTypes.oneOf(['first', 'second']),
+//   minSize: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
+//   maxSize: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
+//   defaultSize: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
+//   size: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
+//   split: PropTypes.oneOf(['vertical', 'horizontal']),
+//   onDragStarted: PropTypes.func,
+//   onDragFinished: PropTypes.func,
+//   onChange: PropTypes.func,
+//   onResizerClick: PropTypes.func,
+//   onResizerDoubleClick: PropTypes.func,
+//   style: stylePropType,
+//   resizerStyle: stylePropType,
+//   paneClassName: PropTypes.string,
+//   pane1ClassName: PropTypes.string,
+//   pane2ClassName: PropTypes.string,
+//   paneStyle: stylePropType,
+//   pane1Style: stylePropType,
+//   pane2Style: stylePropType,
+//   resizerClassName: PropTypes.string,
+//   step: PropTypes.number
+// };
+
+// SplitPane.defaultProps = {
+//   allowResize: true,
+//   minSize: 50,
+//   primary: 'first',
+//   split: 'vertical',
+//   paneClassName: '',
+//   pane1ClassName: '',
+//   pane2ClassName: ''
+// };
+
+// polyfill(SplitPane);
+
+export default SplitPane;
diff --git a/packages/design/src/types/context.ts b/packages/design/src/types/context.ts
new file mode 100644
index 0000000..4d1c7f2
--- /dev/null
+++ b/packages/design/src/types/context.ts
@@ -0,0 +1,25 @@
+import type { Dispatch } from 'react';
+import type { Data } from '@idraw/types';
+import { DesignData, DesignDrawDataType } from './data';
+
+export interface DesignState {
+  activeDrawDataType: DesignDrawDataType;
+  designData: DesignData | null;
+  viewDrawData: Data | null;
+  viewDrawUUID: string | null;
+  themeMode: 'light' | 'dark';
+}
+
+export type DesignActionType = 'updateThemeMode' | 'updateDesignData' | 'switchDrawDataType';
+
+export type DesignAction = {
+  type: DesignActionType;
+  payload: Partial<DesignState>;
+};
+
+export type DesignDispatch = Dispatch<DesignAction>;
+
+export interface DesignContext {
+  state: DesignState;
+  dispatch: DesignDispatch;
+}
diff --git a/packages/design/src/types/data.ts b/packages/design/src/types/data.ts
index f613900..529bb59 100644
--- a/packages/design/src/types/data.ts
+++ b/packages/design/src/types/data.ts
@@ -1,13 +1,23 @@
 import type { Element, ElementType, ElementSize, ElementBaseDesc } from '@idraw/types';
 
-export type DesignItemType = 'component' | 'module' | 'page';
+export type DesignItemType = 'component' | 'component-item' | 'module' | 'page';
+
+export type DesignComponentItem = Omit<ElementSize, 'angle'> & {
+  uuid: string;
+  type: 'component-item';
+  name: string;
+  desc?: ElementBaseDesc & {
+    children: Array<Element<ElementType> | DesignComponentItem>;
+  };
+};
 
 export type DesignComponent = Omit<ElementSize, 'angle'> & {
   uuid: string;
   type: 'component';
   name: string;
   desc?: ElementBaseDesc & {
-    children: Array<Element<ElementType> | DesignComponent>;
+    default: DesignComponentItem;
+    variants: DesignComponentItem[];
   };
 };
 
diff --git a/packages/design/src/types/index.ts b/packages/design/src/types/index.ts
index d90f396..11a2f1e 100644
--- a/packages/design/src/types/index.ts
+++ b/packages/design/src/types/index.ts
@@ -1,2 +1,3 @@
 export * from './data';
+export * from './context';
 export * from './view';
diff --git a/packages/design/src/types/view.ts b/packages/design/src/types/view.ts
index 0a4b83b..03e46aa 100644
--- a/packages/design/src/types/view.ts
+++ b/packages/design/src/types/view.ts
@@ -1,5 +1,9 @@
+import type { ElementType } from '@idraw/types';
+import type { DesignItemType } from './data';
+
 export interface ViewTreeNode {
   title: string;
   key: string;
+  type: DesignItemType | ElementType;
   children?: ViewTreeNode[];
 }
diff --git a/packages/design/src/util/component.ts b/packages/design/src/util/component.ts
index 4085a4a..a04b7ba 100644
--- a/packages/design/src/util/component.ts
+++ b/packages/design/src/util/component.ts
@@ -1,24 +1,11 @@
-import { Data } from '@idraw/types';
 import { ViewTreeNode, DesignData, DesignComponent } from '../types';
+import { parseComponentToViewTreeNode } from './view-tree';
 
 export function parseComponentViewTree(designData: DesignData | null): ViewTreeNode[] {
-  const list: ViewTreeNode[] = [];
+  const treeNodes: ViewTreeNode[] = [];
   designData?.components?.forEach((comp: DesignComponent) => {
-    const children: ViewTreeNode[] = [];
-    if (Array.isArray(comp?.desc?.children)) {
-      comp?.desc?.children?.forEach((child) => {
-        children.push({
-          key: child.uuid,
-          title: child.name || 'Unamed',
-          children: []
-        });
-      });
-    }
-    list.push({
-      key: comp.uuid,
-      title: comp.name || 'Unamed',
-      children
-    });
+    const node = parseComponentToViewTreeNode(comp);
+    treeNodes.push(node);
   });
-  return list;
+  return treeNodes;
 }
diff --git a/packages/design/src/util/view-data.ts b/packages/design/src/util/view-data.ts
new file mode 100644
index 0000000..0b5c870
--- /dev/null
+++ b/packages/design/src/util/view-data.ts
@@ -0,0 +1,66 @@
+import { deepClone } from '@idraw/util';
+import type { Data, Element } from '@idraw/types';
+import type { DesignComponent, DesignComponentItem } from '../types';
+
+function parseComponentItemToElement(item: DesignComponentItem): Element<'group'> {
+  const elem: Element<'group'> = {
+    uuid: item.uuid,
+    name: item.name,
+    type: 'group',
+    x: item.x,
+    y: item.y,
+    w: item.w,
+    h: item.h,
+    desc: {
+      ...item.desc,
+      children: []
+    }
+  };
+  item.desc?.children?.forEach?.((child) => {
+    if (child.type === 'component-item') {
+      const childElem = parseComponentItemToElement(child);
+      elem.desc.children.push(childElem);
+    } else {
+      const childElem = deepClone(child);
+      elem.desc.children.push(childElem);
+    }
+  });
+  return elem;
+}
+
+function parseComponentToElement(comp: DesignComponent): Element<'group'> {
+  const elem: Element<'group'> = {
+    uuid: comp.uuid,
+    name: comp.name,
+    type: 'group',
+    x: comp.x,
+    y: comp.y,
+    w: comp.w,
+    h: comp.h,
+    desc: {
+      children: []
+    }
+  };
+
+  if (comp?.desc?.default) {
+    elem.desc.children.push(parseComponentItemToElement(comp.desc.default));
+  }
+  if (comp?.desc?.variants && Array.isArray(comp?.desc?.variants)) {
+    comp.desc.variants.forEach((item) => {
+      elem.desc.children.push(parseComponentItemToElement(item));
+    });
+  }
+
+  return elem;
+}
+
+export function parseComponentsToDrawData(components: DesignComponent[]): Data {
+  const data: Data = {
+    elements: []
+  };
+  components.forEach((comp: DesignComponent) => {
+    const elem = parseComponentToElement(comp);
+    data.elements.push(elem);
+  });
+  return data;
+}
diff --git a/packages/design/src/util/view-tree.ts b/packages/design/src/util/view-tree.ts
new file mode 100644
index 0000000..77b78b4
--- /dev/null
+++ b/packages/design/src/util/view-tree.ts
@@ -0,0 +1,70 @@
+import type { Element, ElementType } from '@idraw/types';
+import { ViewTreeNode, DesignComponent, DesignComponentItem } from '../types';
+
+function parseElementToViewTreeNode(elem: Element<ElementType>): ViewTreeNode | null {
+  let treeNode: ViewTreeNode | null = null;
+  if (elem.uuid) {
+    treeNode = {
+      key: elem.uuid,
+      title: elem.name || 'Unamed',
+      type: elem.type,
+      children: []
+    };
+    if (Array.isArray((elem as Element<'group'>)?.desc?.children)) {
+      (elem as Element<'group'>).desc.children.forEach((child: Element<ElementType>) => {
+        const childNode = parseElementToViewTreeNode(child);
+        if (childNode) {
+          treeNode?.children?.push(childNode);
+        }
+      });
+    }
+  }
+  return treeNode;
+}
+
+function parseComponentItemToViewTreeNode(comp: DesignComponentItem): ViewTreeNode {
+  const treeNode: Required<ViewTreeNode> = {
+    key: comp.uuid,
+    title: comp.name || 'Unamed',
+    type: comp.type,
+    children: []
+  };
+
+  if (comp?.desc?.children && Array.isArray(comp?.desc?.children)) {
+    comp.desc.children.forEach((child) => {
+      let childNode: ViewTreeNode | null = null;
+      if (child.type === 'component') {
+        childNode = parseComponentToViewTreeNode(child as DesignComponent);
+      } else {
+        childNode = parseElementToViewTreeNode(child as Element<ElementType>);
+      }
+      if (childNode) {
+        treeNode.children.push(childNode);
+      }
+    });
+  }
+  return treeNode;
+}
+
+export function parseComponentToViewTreeNode(comp: DesignComponent): ViewTreeNode {
+  const treeNode: Required<ViewTreeNode> = {
+    key: comp.uuid,
+    title: comp.name || 'Unamed',
+    type: comp.type,
+    children: []
+  };
+
+  if (comp?.desc?.default) {
+    const node = parseComponentItemToViewTreeNode(comp.desc.default);
+    treeNode.children.push(node);
+  }
+
+  if (Array.isArray(comp?.desc?.variants)) {
+    comp?.desc?.variants?.forEach((child: DesignComponentItem) => {
+      const node = parseComponentItemToViewTreeNode(child);
+      treeNode.children.push(node);
+    });
+  }
+
+  return treeNode;
+}