feat:should receive multi onRenderFinishedCallbacks

doric-js/lib/src/ui/panel.d.ts

@@ -12,7 +12,7 @@ export declare abstract class Panel {
     private __data__?;
     private __root__;
     private headviews;
-    onRenderFinished?: () => void;
+    private onRenderFinishedCallback;
     addHeadView(type: string, v: View): void;
     allHeadViews(): IterableIterator<Map<string, View>>;
     removeHeadView(type: string, v: View | string): void;
@@ -30,4 +30,6 @@ export declare abstract class Panel {
     private nativeRender;
     private hookBeforeNativeCall;
     private hookAfterNativeCall;
+    onRenderFinished(): void;
+    addOnRenderFinishedCallback(cb: () => void): void;
 }

doric-js/lib/src/ui/panel.js

@@ -37,6 +37,7 @@ export class Panel {
     constructor() {
         this.__root__ = new Root;
         this.headviews = new Map;
+        this.onRenderFinishedCallback = [];
     }
     onCreate() { }
     onDestroy() { }
@@ -188,11 +189,18 @@ export class Panel {
             });
         }
         Promise.all(promises).then(_ => {
-            if (this.onRenderFinished) {
-                this.onRenderFinished();
-            }
+            this.onRenderFinished();
         });
     }
+    onRenderFinished() {
+        this.onRenderFinishedCallback.forEach(e => {
+            e();
+        });
+        this.onRenderFinishedCallback.length = 0;
+    }
+    addOnRenderFinishedCallback(cb) {
+        this.onRenderFinishedCallback.push(cb);
+    }
 }
 __decorate([
     NativeCall,