Native to js function call patch

cocos/base/CCScriptSupport.cpp

@@ -163,6 +163,33 @@ void ScriptEngineManager::destroyInstance()
     }
 }
 
+bool ScriptEngineManager::executeFunctionToJS(Ref *owner, const std::string func)
+{
+    auto scriptEngine = getInstance()->getScriptEngine();
+    if (scriptEngine->isCalledFromScript())
+    {
+        // Should only be invoked at root class of the function
+        scriptEngine->setCalledFromScript(false);
+    }
+    else
+    {
+        return scriptEngine->executeFunctionFromNative(owner, func);
+    }
+
+    return false;
+}
+
+bool ScriptEngineManager::executeFunctionToJSExtended(Ref *owner, const std::string func)
+{
+    auto scriptEngine = getInstance()->getScriptEngine();
+    if (!scriptEngine->isCalledFromScript())
+    {
+        return scriptEngine->executeFunctionFromNative(owner, func);
+    }
+
+    return false;
+}
+
 bool ScriptEngineManager::sendNodeEventToJS(Node* node, int action)
 {
     auto scriptEngine = getInstance()->getScriptEngine();

cocos/base/CCScriptSupport.h

@@ -431,6 +431,8 @@ class CC_DLL ScriptEngineProtocol
      */
     virtual int sendEvent(ScriptEvent* evt) = 0;
 
+    virtual bool executeFunctionFromNative(Ref *owner, const std::string func) = 0;
+
     /** called by CCAssert to allow scripting engine to handle failed assertions
      * @return true if the assert was handled by the script engine, false otherwise.
      * @js NA
@@ -491,6 +493,11 @@ class CC_DLL ScriptEngineManager
      * @lua NA
      */
     static void destroyInstance();
+
+    static bool executeFunctionToJS(Ref *owner, const std::string func);
+
+    static bool executeFunctionToJSExtended(Ref *owner, const std::string func);
+
     /**
      * @js NA
      * @lua NA

cocos/ui/UIWidget.cpp

@@ -464,6 +464,14 @@ Node* Widget::getVirtualRenderer()
 
 void Widget::onSizeChanged()
 {
+#if CC_ENABLE_SCRIPT_BINDING
+    if (_scriptType == kScriptTypeJavascript)
+    {
+        if (ScriptEngineManager::executeFunctionToJS(this, "onSizeChanged"))
+            return;
+    }
+#endif
+
     for (auto& child : getChildren())
     {
         Widget* widgetChild = dynamic_cast<Widget*>(child);

cocos/ui/UIWidget.h

@@ -596,10 +596,10 @@ class Widget : public ProtectedNode, public LayoutParameterProtocol
      *@return void
      */
     void  dispatchFocusEvent(Widget* widgetLoseFocus, Widget* widgetGetFocus);
-
-protected:
     //call back function called when size changed.
     virtual void onSizeChanged();
+
+protected:
 
     //initializes renderer of widget.
     virtual void initRenderer();