同步框架代码

src/jl-graphic/app/JlDrawApp.ts

@@ -456,13 +456,13 @@ export class JlDrawApp extends GraphicApp {
    * 删除选中图形对象
    */
   deleteSelectedGraphics() {
-    const deletes = this.selectedGraphics.slice(
-      0,
-      this.selectedGraphics.length
-    );
-    this.deleteGraphics(...this.selectedGraphics);
-    // 删除图形对象操作记录
-    this.opRecord.record(new GraphicDeleteOperation(this, deletes));
+    const deletes = this.deleteGraphics(...this.selectedGraphics);
+    if (deletes.length > 0) {
+      // 删除图形对象操作记录
+      this.opRecord.record(new GraphicDeleteOperation(this, deletes));
+    } else {
+      console.debug('没有删除元素,不记录');
+    }
   }
 
   updateCanvasAndRecord(data: ICanvasProperties) {

src/jl-graphic/app/JlGraphicApp.ts

@@ -320,6 +320,11 @@ export interface IGraphicAppConfig {
    * 超出屏幕显示范围是否剪裁，默认true
    */
   cullable?: boolean;
+
+  /**
+   * 是否支持删除操作
+   */
+  isSupportDeletion?: (g: JlGraphic) => boolean;
 }
 
 /**
@@ -729,8 +734,19 @@ export class GraphicApp extends EventEmitter<GraphicAppEvents> {
    * 删除图形
    * @param graphics 图形对象
    */
-  deleteGraphics(...graphics: JlGraphic[]) {
-    graphics.forEach((g) => this.doDeleteGraphics(g));
+  deleteGraphics(...graphics: JlGraphic[]): JlGraphic[] {
+    const dels = graphics.filter((g) => {
+      if (
+        this._options?.isSupportDeletion &&
+        this._options.isSupportDeletion(g)
+      ) {
+        this.doDeleteGraphics(g);
+        return true;
+      }
+      console.debug(`type=${g.type},id=${g.id}的图形不支持删除`);
+      return false;
+    });
+    return dels;
   }
 
   /**