I just tried and it does not work for me. 
Here is wjat I am doing:
1. In the AppConfig I have added following lines:
            mediatorMap.map(TestPopupButton).toMediator(TestPopupButtonMediator); //button on popup window            mediatorMap.map(TestPopupWindow).toMediator(TestPopupWindowMediator); // and popup window itself
2. And here I open popup:
            var w:TestPopupWindow = new TestPopupWindow();            PopUpManager.addPopUp(w, FlexGlobals.topLevelApplication as DisplayObject);

Am I missing something?

Is flex popup mediating properly with RL2?

Great example thanks Joel. this and http://labs.riamore.com/content/robotlegs/examples/dynmodules got me up to scratch with RobotLegs & Flex, for some of these more complicated applications of the frameworks, from a beginner in in a few days

SWCs used: 
as3-signals-v0.8.swc, robotlegs-framework-v1.5.2.swc, 
signals-extension-SignalsCommandMap-v0.4.swc, 
SwiftSuspenders-v1.5.1.swcHope this is useful to people

Warning: Injector already has a rule for type “org.robotlegs.examples.signalcommands.model.enums::FoodType”, named “”. If you have overwritten this mapping intentionally you can use “injector.unmap()” prior to your replacement mapping in order to avoid seeing this message. 

I had to add a constructor function to the FoodItemSelected signal

public class FoodItemSelected extends Signal { public function FoodItemSelected() { super(FoodItem); } }

this removes the following error that was occurring with other versions:

[Fault] exception, information=Error: Injector is missing a rule to handle injection into property “item” of object “[object FoodItemSelectedCommand]“. Target dependency: “org.robotlegs.examples.signalcommands.model.vo::FoodItem”, named “”

but there’s a warning on the Injector…

AddFoodItemToOrder::FoodSelectionView::addFoodItem_clickHandlerFoodSelectionViewMediator::handleItemTypeAddedAddFoodItemToOrderCommand::executeFoodOrderModel::addItemToOrderCurrentOrderViewMediator::updateOnItemAddedFoodItemSelectedCommand::executeCurrentOrderViewMediator::updateOnOrderUpdatedFoodSelectionView::addFoodItem_clickHandlerFoodSelectionViewMediator::handleItemTypeAddedWarning: Injector already has a rule for type “org.robotlegs.examples.signalcommands.model.enums::FoodType”, named “”. If you have overwritten this mapping intentionally you can use “injector.unmap()” prior to your replacement mapping in order to avoid seeing this message.

I’m not sure what’s happening there then. The application works now, but there’s obviously still an issue

j

I agree. The IContextConfigs currently in Robotlegs 2 have a lot of code like:

context.injector.getInstance(IMediatorMap)

Using the context to get the injector to pull out a dependency from the injector–this gets my Demeter-sense tingling. I feel it would be more straightforward to just inject the IMediatorMap into something and skip the pretext of “configuring the context”.