添加数据加载完成后阶段事件通知

src/jlgraphic/app/JlGraphicApp.ts

@@ -276,6 +276,8 @@ export class SelectedChangeEvent {
 export interface GraphicAppEvents extends GlobalMixins.GraphicAppEvents {
   graphicstored: [graphic: JlGraphic];
   graphicdeleted: [graphic: JlGraphic];
+  // 数据加载完成后，额外的逻辑处理阶段
+  postdataloaded: [];
   loadfinish: [];
   'interaction-plugin-resume': [plugin: InteractionPlugin]; // 交互插件启用
   'interaction-plugin-pause': [plugin: InteractionPlugin]; // 交互插件停止
@@ -653,6 +655,8 @@ export class GraphicApp extends EventEmitter<GraphicAppEvents> {
         .pop() ?? 0;
     // console.log('最大值', max)
     GraphicIdGenerator.initSerial(max);
+    // 数据加载完成后
+    this.emit('postdataloaded');
     // 加载完成通知
     this.emit('loadfinish');
   }