From 150a0759aa9801a79cbf59b3c63a6b0f5b201b5b Mon Sep 17 00:00:00 2001
From: chenshenhai <cshenhai@gmail.com>
Date: Sat, 11 Sep 2021 16:20:21 +0800
Subject: [PATCH] feat: add keyboard event for undo

---
 packages/idraw/src/index.ts                | 5 +++--
 packages/idraw/src/lib/keyboard-watcher.ts | 3 +++
 packages/idraw/src/mixins/keyboard.ts      | 4 ++++
 3 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/packages/idraw/src/index.ts b/packages/idraw/src/index.ts
index 81a45c7..9e5fc2a 100644
--- a/packages/idraw/src/index.ts
+++ b/packages/idraw/src/index.ts
@@ -11,7 +11,7 @@ import {
 import { redo, undo } from './mixins/record';
 import { exportDataURL } from './mixins/file';
 import { copyElements, pasteElements, cutElements, deleteElements,
-  keyArrowUp, keyArrowDown, keyArrowLeft, keyArrowRight,
+  keyArrowUp, keyArrowDown, keyArrowLeft, keyArrowRight, keyUndo,
 } from './mixins/keyboard';
 
 class iDraw extends Core {
@@ -68,7 +68,8 @@ class iDraw extends Core {
         .on('keyboardArrowUp', () => keyArrowUp(this))
         .on('keyboardArrowDown', () => keyArrowDown(this))
         .on('keyboardArrowLeft', () => keyArrowLeft(this))
-        .on('keyboardArrowRight', () => keyArrowRight(this));
+        .on('keyboardArrowRight', () => keyArrowRight(this))
+        .on('keyboardUndo', () => keyUndo(this));
     }
     this[_hasInited] = true;
   }
diff --git a/packages/idraw/src/lib/keyboard-watcher.ts b/packages/idraw/src/lib/keyboard-watcher.ts
index 8db83fd..2ea8c84 100644
--- a/packages/idraw/src/lib/keyboard-watcher.ts
+++ b/packages/idraw/src/lib/keyboard-watcher.ts
@@ -9,6 +9,7 @@ export type TypeKeyboardEventArgMap = {
   'keyboardArrowLeft': void;
   'keyboardArrowUp': void;
   'keyboardArrowDown': void;
+  'keyboardUndo': void;
 }
  
 export interface TypeKeyboardEvent {
@@ -35,6 +36,8 @@ export class KeyboardWatcher implements TypeKeyboardEvent {
         this.trigger('keyboardPaste', undefined);
       } else if ((e.metaKey === true || e.ctrlKey === true) && e.key === 'x') {
         this.trigger('keyboardCut', undefined);
+      } else if ((e.metaKey === true || e.ctrlKey === true) && e.key === 'z') {
+        this.trigger('keyboardUndo', undefined);
       } else if (e.key === 'Backspace') {
         this.trigger('keyboardDelete', undefined);
       } else if (e.key === 'ArrowUp') {
diff --git a/packages/idraw/src/mixins/keyboard.ts b/packages/idraw/src/mixins/keyboard.ts
index 0772a63..725082b 100644
--- a/packages/idraw/src/mixins/keyboard.ts
+++ b/packages/idraw/src/mixins/keyboard.ts
@@ -99,4 +99,8 @@ export function keyArrowRight(idraw: iDraw) {
     const { scrollLeft } = idraw.getScreenTransform();
     idraw.scrollLeft(scrollLeft + keyArrowMoveDistance);
   }
+}
+
+export function keyUndo(idraw: iDraw) {
+  idraw.undo();
 }
\ No newline at end of file