feat:add content change event callback

src/editor/core/draw/Draw.ts

@@ -851,11 +851,16 @@ export class Draw {
       })
     }
 
-    // 页面改变
+    // 信息变动回调
     setTimeout(() => {
+      // 页面尺寸改变
       if (this.listener.pageSizeChange) {
         this.listener.pageSizeChange(pageRowList.length)
       }
+      // 文档内容改变
+      if (this.listener.contentChange && isSubmitHistory) {
+        this.listener.contentChange()
+      }
     })
   }
 

src/editor/core/listener/Listener.ts

@@ -1,4 +1,5 @@
 import {
+  IContentChange,
   IIntersectionPageNoChange,
   IPageScaleChange,
   IPageSizeChange,
@@ -15,6 +16,7 @@ export class Listener {
   public pageSizeChange: IPageSizeChange | null
   public pageScaleChange: IPageScaleChange | null
   public saved: ISaved | null
+  public contentChange: IContentChange | null
 
   constructor() {
     this.rangeStyleChange = null
@@ -23,6 +25,7 @@ export class Listener {
     this.pageSizeChange = null
     this.pageScaleChange = null
     this.saved = null
+    this.contentChange = null
   }
 
 }

src/editor/interface/Listener.ts

@@ -30,3 +30,5 @@ export type IPageSizeChange = (payload: number) => void
 export type IPageScaleChange = (payload: number) => void
 
 export type ISaved = (payload: IEditorResult) => void
+
+export type IContentChange = () => void