Hello Fellow stackoverflowers,
I´m stuck writing a piece of code. I have application with a viewstack witch load 5 modules. each module is loaded via the moduleLoader tag and they all have an id.
Every loaded module has a context menu. the context menu has 5 menuItems. one menuItem for each view for the viewstack.
The context menu is loaded via xml.
this is my application file.
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
layout="absolute"
backgroundColor="#b1b1b1"
backgroundGradientColors="[#b1b1b1,#252525]">
<mx:Script>
<![CDATA[
import mx.core.Container;
//change viewstack views via modules context menu
public function switchView(viewId:String):void
{
var container:Container = Container(tops.getChildByName(viewId));
if (container != null)
{
tops.selectedChild = container;
}
}
]]>
</mx:Script>
<mx:ViewStack id="tops" width="100%" height="100%">
<mx:ModuleLoader id="admin" url="view/admin.swf" width="100%" height="100%"/>
<mx:ModuleLoader id="tv" url="view/tv.swf" width="100%" height="100%"/>
<mx:ModuleLoader id="community" url="view/community.swf" width="100%" height="100%"/>
<mx:ModuleLoader id="shop" url="view/shop.swf" width="100%" height="100%"/>
<mx:ModuleLoader id="communicator" url="view/communicator.swf" width="100%" height="100%"/>
</mx:ViewStack>
</mx:Application>
and this is my switch statement in my Module
public function changeView():void{
switch(action) {
case "admin":
parentApplication.switchView("admin");
break;
case "tv":
parentApplication.switchView("tv");
break;
case "shop":
parentApplication.switchView("shop");
break;
case "community":
parentApplication.switchView("community");
break;
case "default":
parentApplication.switchView("communicator");
break;
}
}
and this is my context menu xml
<mx:XML id="appMenu">
<root>
<menuitem enabled="false"/>
<menuitem label="Administration" action="admin" icon="adminMDI"/>
<menuitem label="Television" action="tv" icon="tvMDI"/>
<menuitem label="Community" action="community" icon="communityMDI"/>
<menuitem label="Shopping Mall" action="shop" icon="shoppingMallMDI"/>
<menuitem label="Communicator" action="default" icon="communicatorMDI"/>
</root>
</mx:XML>
What i would like to do is switch the views in the viewstack by clicking on one of the menuitems in the context menu. i can't communicate from my module to the application. What am i doing wrong? what must i do? Can anybody help me out?
Oyeah before i forget
the xml of the context menu is in the module but, the context menu is in a as file that extensiate a button.
please can any body give me a good example how to accomplish this.
Thank
DJ
I see a couple issues before getting into the multi-module communication.
First, in your changeView() function, you are declaring the variable action and then switching on it.
public function changeView():void {
var action:String;
switch(action) {
// action will always be null here.
}
}
Because you don't have a 'default' case in your switch statement(s), parentApplication.switchView will never be called.
Also, for the sake of brevity, you can write switch statements like this:
switch(action) {
case "admin":
parentApplication.changeView("admin");
break;
case "tv":
parentApplication.changeView("tv");
break;
case "shop":
parentApplication.changeView("shop");
break;
// ... etc ...
default:
// this gets called if action doesn't match anything.
break;
}
Finally, you could save yourself even more typing because your action and module ids are the same, you could do this:
public function changeView(action:String):void {
parentApplication.changeView(action);
}
Maybe try those things and then updating your question (also, the XML for your context menus didn't render correctly in your question). That may help the community solve your issue a little easier.
I don't think the problem is in the module communication. I built a simple project that does what I think you're looking for. I've posted the source below.
mmodules.mxml
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" implements="interfaces.IApplication">
<mx:Script>
<![CDATA[
import mx.core.Container;
public function changeView(action:String):void {
viewstack.selectedChild = viewstack.getChildByName(action) as Container;
}
]]>
</mx:Script>
<mx:ViewStack id="viewstack" width="100%" height="100%">
<mx:ModuleLoader id="module1" url="views/module1.swf" />
<mx:ModuleLoader id="module2" url="views/module2.swf" />
</mx:ViewStack>
</mx:Application>
interfaces/IApplication.as
package interfaces {
public interface IApplication {
function changeView(action:String);
}
}
views/module1.mxml
<?xml version="1.0" encoding="utf-8"?>
<mx:Module xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
<mx:Script>
<![CDATA[
import interfaces.IApplication;
import mx.events.MenuEvent;
import mx.controls.Menu;
/**
* Dynamically builds a menu.
*/
protected function showMenu():void {
var m:Menu = Menu.createMenu(null, menuData, false);
m.labelField = '@label';
m.addEventListener(MenuEvent.ITEM_CLICK, onItemClick);
m.show(10, 10);
}
/**
* Handles whenever an item in the menu is clicked.
*/
protected function onItemClick(e:MenuEvent):void {
if(e && e.item && e.item is XML) {
changeView(e.item.@action);
}
}
/**
* Tells the parent application to switch views.
*/
protected function changeView(action:String):void {
var app:IApplication = parentApplication as IApplication;
switch(action) {
case 'module1':
app.changeView('module1');
break;
case 'module2':
app.changeView('module2');
break;
}
}
]]>
</mx:Script>
<mx:XML format="e4x" id="menuData">
<root>
<menuitem label="Module 1" action="module1" />
<menuitem label="Module 2" action="module2" />
</root>
</mx:XML>
<mx:Button label="Show menu" click="showMenu()" />
</mx:Module>
Hope that helps.