The Space For App Developers

// Main.mxml
 
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
			   xmlns:s="library://ns.adobe.com/flex/spark"
			   xmlns:mx="library://ns.adobe.com/flex/mx"
			   xmlns:vn="http://ns.riaspace.com/as3viewnavigator"
			   width="350" height="350" viewSourceURL="http://riaspace.com/examples/as3viewnavigator/flex/srcview/index.html">
 
	<fx:Script>
		<![CDATA[
			import com.riaspace.as3viewnavigator.demo.SampleView;
			import com.riaspace.as3viewnavigator.events.ViewNavigatorEvent;
 
			protected function navigator_viewChangingHandler(event:ViewNavigatorEvent):void
			{
				txtTrace.appendText(
					"action: " + event.action + 
					", oldView: " + event.oldView + 
					" newView: " +  event.newView +
					"\n"
				);
			}
		]]>
	</fx:Script>
 
	<s:VGroup left="5" top="5" right="5" bottom="5">
		<vn:ViewNavigator id="navigator" firstView="{SampleView}" firstViewProps="{{viewNumber : 1}}"
						  viewChanging="navigator_viewChangingHandler(event)" 
						  width="100%" height="70%" />
		<s:Label id="lblTrace" text="Navigator events:" />
		<s:TextArea id="txtTrace" width="100%" height="30%" />
	</s:VGroup> 
 
</s:Application>

// com/riaspace/as3viewnavigator/demo/SampleView.as
 
<?xml version="1.0" encoding="utf-8"?>
<vn:View xmlns:fx="http://ns.adobe.com/mxml/2009" 
		 xmlns:s="library://ns.adobe.com/flex/spark" 
		 xmlns:mx="library://ns.adobe.com/flex/mx" 
		 xmlns:vn="http://ns.riaspace.com/as3viewnavigator">
 
	<fx:Script>
		<![CDATA[
			import mx.utils.NameUtil;
 
			override public function toString():String
			{
				return NameUtil.createUniqueName(this);
			}
 
		]]>
	</fx:Script>
 
	<fx:Declarations>
		<fx:Number id="viewNumber" />
	</fx:Declarations>
 
	<s:Rect width="100%" height="100%">
		<s:fill>
			<s:SolidColor color="#f0f0f0" />
		</s:fill>
	</s:Rect>
 
	<s:Label id="lblViewNumber" text="{viewNumber}" fontSize="55" 
			 top="10" horizontalCenter="0" />
 
	<s:VGroup bottom="10" horizontalCenter="0">
		<s:Button id="btnPushView" label="push view" width="100" 
				  click="navigator.pushView(SampleView, {viewNumber : (viewNumber + 1)})" />
 
		<s:Button id="btnPopView" label="pop view" width="100" 
				  click="navigator.popView()" />
 
		<s:Button id="btnPopAll" label="pop all" width="100" 
				  click="navigator.popAll()" />
 
		<s:Button id="btnPopToFirst" label="pop to first" width="100" 
				  click="navigator.popToFirstView()" />
 
		<s:Button id="btnReplace" label="replace" width="100" 
				  click="navigator.replaceView(SampleView, {viewNumber : (viewNumber + 1)})" />
	</s:VGroup>
 
</vn:View>

// Main.as
 
package
{
	import com.adobe.viewsource.ViewSource;
	import com.riaspace.as3viewnavigator.ViewNavigator;
	import com.riaspace.as3viewnavigator.demo.SampleView;
	import com.riaspace.as3viewnavigator.events.ViewNavigatorEvent;
 
	import fl.controls.TextArea;
 
	import flash.display.Sprite;
	import flash.display.StageAlign;
	import flash.display.StageScaleMode;
	import flash.events.Event;
 
	[SWF(width="350", height="350", frameRate="30")]
	public class Main extends Sprite
	{
		private var navigator:ViewNavigator;
 
		private var txtTrace:TextArea;
 
		public function Main()
		{
			// Adding source code view
			ViewSource.addMenuItem(this, "http://riaspace.com/examples/as3viewnavigator/as3/srcview/index.html");
 
			stage.align = StageAlign.TOP_LEFT;
			stage.scaleMode = StageScaleMode.NO_SCALE;
 
			// Adding trace area
			txtTrace = new TextArea;
 
			// Creating instance of ViewNavigator
			navigator = new ViewNavigator(SampleView, {viewNumber : 1});
			// Registering view navigator event handler 
			navigator.addEventListener(ViewNavigatorEvent.VIEW_CHANGING, navigator_viewChangingHandler);
 
			// Setting components dimenstions and positions
			layoutComponents();
 
			// Adding txtTrace component
			addChild(txtTrace);
			// Adding navigator to the current sprite
			addChild(navigator);
 
			// Adding resize handler to handle components layout
			stage.addEventListener(Event.RESIZE, function(event:Event):void { layoutComponents() });
		}
 
		protected function layoutComponents():void
		{
			// Resizing txtTrace component
			txtTrace.width = stage.stageWidth;
			// Setting fixed height of txtTrace component
			txtTrace.height = 60;
			// Positioning txtTrace component below navigator
			txtTrace.y = stage.stageHeight - txtTrace.height; 
 
			// Setting navigator size to be over txtTrace component
			navigator.setSize(stage.stageWidth, stage.stageHeight - txtTrace.height);
		}
 
		protected function navigator_viewChangingHandler(event:ViewNavigatorEvent):void
		{
			txtTrace.appendText(
				"action: " + event.action + 
				", oldView: " + event.oldView + 
				" newView: " +  event.newView +
				"\n"
			);
		}
	}
}

// com/riaspace/as3viewnavigator/demo/SampleView.as
 
...
	override public function resize():void
	{
		for (var element:Object in _elements)
		{
			var coordinates:Object = _elements[element];
			position(DisplayObject(element), coordinates.horizontalCenter, 
				coordinates.verticalCenter);
		}
	}
 
...

package
{
	import com.riaspace.as3viewnavigator.ViewNavigator;
 
	import flash.display.Sprite;
	import flash.display.StageAlign;
	import flash.display.StageScaleMode;
	import flash.events.MouseEvent;
	import flash.text.TextFormat;
	import flash.text.TextFormatAlign;
 
	import qnx.ui.buttons.LabelButton;
	import qnx.ui.core.Container;
	import qnx.ui.core.ContainerAlign;
	import qnx.ui.core.ContainerFlow;
	import qnx.ui.core.SizeMode;
	import qnx.ui.core.Spacer;
	import qnx.ui.text.Label;
 
	[SWF(width="600", height="1024", backgroundColor="#FFFFFF", frameRate="30")]
	public class Main extends Sprite
	{
		private var navigator:ViewNavigator;
 
		private var viewNumber:int = 0;
 
		public function Main()
		{
			initializeUI();
		}
 
		private function initializeUI():void
		{
			stage.align = StageAlign.TOP_LEFT;
			stage.scaleMode = StageScaleMode.NO_SCALE;
 
			// Creating instance of ViewNavigator
			navigator = new ViewNavigator(this);
			// Pushing first view to the navigator
			navigator.pushView(createView());
		}
 
		private function createView():Container
		{
			var view:Container = new Container;
			view.flow = ContainerFlow.VERTICAL;
			view.align = ContainerAlign.MID;
 
			// Incrementing view number
			viewNumber++;
 
			// 20% spacer from the top
			view.addChild(new Spacer(20));
 
			// Adding label with view number
			var numLabel:Label = new Label;
			numLabel.text = viewNumber.toString();
			var format:TextFormat = new TextFormat;
			format.size = 70;
			format.bold = true;
			format.align = TextFormatAlign.CENTER;
			numLabel.format = format;
			numLabel.size = 100;
			numLabel.sizeMode = SizeMode.BOTH;
			view.addChild(numLabel);
 
			// 15% spacer between label above and buttons
			view.addChild(new Spacer(15));
 
			// Adding "push view" button
			var btn:LabelButton = new LabelButton;
			btn.label = "push view";
			btn.addEventListener(MouseEvent.CLICK,
				function(event:MouseEvent):void
				{
					navigator.pushView(createView());
				});
			view.addChild(btn);
 
			// Adding "pop view" button
			btn = new LabelButton;
			btn.label = "pop view";
			btn.addEventListener(MouseEvent.CLICK,
				function(event:MouseEvent):void
				{
					navigator.popView();
				});
			view.addChild(btn);
 
			// Adding "pop all" button
			btn = new LabelButton;
			btn.label = "pop all";
			btn.addEventListener(MouseEvent.CLICK,
				function(event:MouseEvent):void
				{
					navigator.popAll();
				});
			view.addChild(btn);
 
			// Adding "pop to first button" button
			btn = new LabelButton;
			btn.label = "pop to first";
			btn.addEventListener(MouseEvent.CLICK,
				function(event:MouseEvent):void
				{
					navigator.popToFirstView();
				});
			view.addChild(btn);
 
			// Adding "replace" button
			btn = new LabelButton;
			btn.label = "replace";
			btn.addEventListener(MouseEvent.CLICK,
				function(event:MouseEvent):void
				{
					navigator.replaceView(createView());
				});
			view.addChild(btn);
 
			return view;
		}
	}
}