ActionScript Developer’s Guide to Robotlegs by Joel Hooks & Stray (Lindsey Fallow)

Author:Joel Hooks & Stray (Lindsey Fallow) [Joel Hooks]
Language: eng
Format: epub
Tags: COMPUTERS / Software Development & Engineering / General
ISBN: 9781449308896
Publisher: O'Reilly Media
Published: 2011-08-07T16:00:00+00:00

Mediator Structure

Mediators are simple by design. As shown below, your mediators declare injections, register events to listen to, and define methods to handle those events.

Example 8-2. MosaicTool: GridViewMediator.as listens for events on its view and from the Context

public class GridViewMediator extends Mediator { [Inject] public var view:GridView; override public function onRegister():void { addViewListener(TileColorChangeEvent.CHANGED, dispatch, TileColorChangeEvent); addContextListener(TileSupplyEvent.SUPPLY_SELECTED, changeSelectionColor, TileSupplyEvent); addContextListener(TileSupplyEvent.SELECTED_SUPPLY_COLOR_CHANGED, changeSelectionColor, TileSupplyEvent); addContextListener(GroutEvent.COLOR_CHANGED, changeGroutColor, GroutEvent); addContextListener(GroutEvent.COLOR_LOADED, changeGroutColor, GroutEvent); addContextListener(DesignEvent.DESIGN_COLORS_CHANGED, redrawGrid, DesignEvent); dispatch(new GridReadyEvent(GridReadyEvent.READY)); } protected function changeSelectionColor(e:TileSupplyEvent):void { view.selectionColor = e.color; } protected function changeGroutColor(e:GroutEvent):void { view.groutColor = e.color; } protected function redrawGrid(e:DesignEvent):void { view.applyColorsToWholeGrid(e.colors); } }

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