Is it possible to call module component's function through interface function

Question

Hi,
     I see this in the livedocs.
"In general, if you want to set properties on controls in the module by using external values, you should create variables that are bindable. You then set the values of those variables in the interface’s implemented methods. If you try to set properties of the module’s controls directly by using external values, the controls might not be instantiated by the time the module is loaded and the attempt to set the properties might fail."
     I have an extended component in a module. I need to call that component's funcion from the interface function. i.e My main appication call the interface funcion, and that interface funcion has to call the component's funcion. Is it possible. I get error that the component is null, if I try this. Is there any way to do this.
     Thanks in advance.

Answer 1

I accomplished this, by dispatching a event from the module, and handling it in the module itself. In the handler I am able to access the component. However it is possible only when I use ModuleLoader. I tried the same using ModuleManager. It didnt work. I am adding the listener in creationComplete event. The event was triggered properly. But the listener was not invoked.
Below is the TestModule i used. In this setLabel is the implemented function.
<mx:Module xmlns:fx="http://ns.adobe.com/mxml/2009"
           xmlns:s="library://ns.adobe.com/flex/spark" implements="TestInterface" creationComplete="onCreate()"
           xmlns:mx="library://ns.adobe.com/flex/mx" layout="absolute" width="400" height="300">
    <fx:Script>
        <![CDATA[
            [Bindable] public var labelText:String = 'Initial Text';
            public function onCreate():void {               
                this.addEventListener("test",testListener);
            public function setLabel(s:String):void {
                trace(getQualifiedClassName(parentDocument));
                this.labelText = s;       
                triggerEvent();
            public function triggerEvent():void {
                trace('triggering event');
                dispatchEvent(new Event("test",true));
            public function testListener(event:Event):void {
                trace('event caught');
                trace(moduleLabel.text);
        ]]>
    </fx:Script>
    <fx:Declarations>
        <!-- Place non-visual elements (e.g., services, value objects) here -->
    </fx:Declarations>
    <mx:Label id="moduleLabel" text="{labelText}"/>
</mx:Module>
With ModuleLoader I get the following output in console, when the setLabel function is called
ModuleTest
triggering event
event caught
test
With ModuleManger,I get the following output. The event listener is not invoked.
null
triggering event
Also while trying different options, in between I tried using parentDocument. I added the below line in the interface function.
trace(getQualifiedClassName(parentDocument));
This line printed the correct parent class name, while using ModuleLoader. But printed null with ModuleManager.
Following are the functions in main application to load the module using module manager.
            public function onCreate():void {
                loadTestModule();
            public function loadTestModule():void {       
                var url:String = '';
                url += 'TestModule.swf';
                modInfo = ModuleManager.getModule(url);
                modInfo.addEventListener(ModuleEvent.ERROR,moduleReady);
                modInfo.addEventListener(ModuleEvent.READY,moduleReady);
                modInfo.load(null, null, null, moduleFactory);
            public function moduleReady(event:ModuleEvent):void {               
                if (event.type == ModuleEvent.ERROR) {
                    trace(event.errorText);
                if (event.type == ModuleEvent.READY) {
                    mod = modInfo.factory.create() as TestInterface;
                    var el:IVisualElement = modInfo.factory.create() as IVisualElement;
                    this.addElement(el);                   
Am I missing something when I use ModuleManager.