the currentState of components with the modelLocator. Hopfully, no-
one is offended by the simplicity.
Tim Hoff
//*******************************************************************
ModelLocator
//*******************************************************************
package code.model
{
import org.nevis.cairngorm.model.ModelLocator;
[Bindable]
public class ModelLocator implements
org.nevis.cairngorm.model.ModelLocator
{
private static var
modelLocator:code.model.ModelLocator;
public static function getInstance() :
code.model.ModelLocator
{
if ( modelLocator == null )
modelLocator = new
code.model.ModelLocator();
return modelLocator;
}
//-------------------------------------------------------------------
public function ModelLocator()
{
if ( code.model.ModelLocator.modelLocator !=
null )
throw new Error( "Only one
ModelLocator instance should be instantiated" );
}
//-------------------------------------------------------------------
public var mainPanelViewCurrentState : String
= "logo";
public static const VIEWING_MAIN_LOGO : String
= "logo";
public static const VIEWING_MAIN_SEARCH : String
= "search";
public static const VIEWING_MAIN_SEARCHING : String
= "searching";
public var searchViewCurrentState : String
= "authors";
public static const VIEWING_SEARCH_AUTHORS : String
= " authors ";
public static const VIEWING_SEARCH_CONTACTS : String
= "contacts";
}
}
//*******************************************************************
Component MXML
//*******************************************************************
<?xml version="1.0" encoding="utf-8"?>
<mx:Panel xmlns:mx="http://www.adobe.com/2006/mxml" xmlns="*"
height="100%" width="100%" paddingTop="10"
horizontalScrollPolicy="off" verticalScrollPolicy="off"
xmlns:logo="code.view.mainPanel.logo.*"
xmlns:search="code.view.mainPanel.search.*"
xmlns:searching="code.view.mainPanel.searching.*"
currentState="{ ModelLocator.getInstance
().mainPanelViewCurrentState }">
<mx:Script>
<![CDATA[
import code.model.ModelLocator;
]]>
</mx:Script>
<mx:Canvas id="mainCanvas" width="100%" height="100%"/>
<mx:states>
<mx:State name="{ModelLocator.VIEWING_MAIN_LOGO}"
id="logo">
<mx:AddChild target="{mainCanvas}"
position="lastChild">
<logo:LogoView/>
</mx:AddChild>
</mx:State>
<mx:State name="{ModelLocator.VIEWING_MAIN_SEARCH}"
id="search">
<mx:AddChild target="{mainCanvas}"
position="lastChild">
<search:SearchView currentState="{
ModelLocator.getInstance().searchViewCurrentState }"/>
</mx:AddChild>
</mx:State>
<mx:State
name="{ModelLocator.VIEWING_MAIN_SEARCHING}"
id="searching">
<mx:AddChild target="{mainCanvas}"
position="lastChild">
<searching:SearchingView/>
</mx:AddChild>
</mx:State>
</mx:states>
</mx:Panel>
//*******************************************************************
Command
//*******************************************************************
package code.commands
{
import org.nevis.cairngorm.commands.Command;
import org.nevis.cairngorm.control.CairngormEvent;
import code.model.ModelLocator;
public class sampleCommand implements Command
{
//-------------------------------------------------------------------
public function execute(
cairngormEvent:CairngormEvent ):void
{
// Do Something
ModelLocator.getInstance().mainPanelViewCurrentState =
ModelLocator.VIEWING_MAIN_SEARCH;
}
}
}
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