✨ feat: 新增 WYSIWYG 编辑器功能和相关工具栏事件处理

web/include/vditor/src/ts/toolbar/Undo.ts

@@ -0,0 +1,18 @@
+import {Constants} from "../constants";
+import {getEventName} from "../util/compatibility";
+import {MenuItem} from "./MenuItem";
+import {disableToolbar} from "./setToolbar";
+
+export class Undo extends MenuItem {
+    constructor(vditor: IVditor, menuItem: IMenuItem) {
+        super(vditor, menuItem);
+        disableToolbar({undo: this.element}, ["undo"]);
+        this.element.children[0].addEventListener(getEventName(), (event) => {
+            event.preventDefault();
+            if (this.element.firstElementChild.classList.contains(Constants.CLASS_MENU_DISABLED)) {
+                return;
+            }
+            vditor.undo.undo(vditor);
+        });
+    }
+}