cursor.mxml

<?xml version="1.0"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" initialize="init();">
    <mx:Script>
        <![CDATA[
		import mx.collections.*;		
		[Bindable]
		private var myCursor:IViewCursor; 
		[Bindable]
		public var myXMLC:XMLListCollection; 
		public var myXML:XML =<book>
								<chapter>
								<page pagenumber="1" visible="false">
										<column tab="fullwidth"> 
											<swf align="center" src='assets/img/relation1.jpg' />
										</column>
									</page>
									<page pagenumber="2" visible="false">
										<column tab="fullwidth"> 
											<swf align="center" src='assets/img/relation2.jpg' />
										</column>
									</page> 
									<page pagenumber="3">
										<column tab="fullwidth">
											<swf align="center" src='assets/img/baken.swf' />
										</column>
									</page>
									<page pagenumber="4">
										<column tab="fullwidth">
											<swf align="center" src='assets/img/desktopography1.jpg' />
										</column>
									</page>
									<page pagenumber="5">
										<column tab="fullwidth">
											<swf align="center" src='assets/img/desktopography2.jpg' />
										</column>
									</page>
									<page pagenumber="6">
										<column tab="fullwidth">
											<swf align="center" src='assets/img/dreamscan.jpg' />
										</column>
									</page>
									<page pagenumber="7">
										<column tab="fullwidth">
											<swf align="center" src='assets/img/formula.jpg' />
										</column>
									</page>
									<page pagenumber="8">
										<column tab="fullwidth">
											<swf align="center" src='assets/img/hollywood.jpg' />
										</column>
									</page>
									<page pagenumber="9">
										<column tab="fullwidth">
											<swf align="center" src='assets/img/mode1.jpg' />
										</column>
									</page>
									<page pagenumber="10">
										<column tab="fullwidth">
											<swf align="center" src='assets/img/mode2.jpg' />
										</column>
									</page>
									<page pagenumber="11">
										<column tab="fullwidth">
											<swf align="center" src='assets/img/renaissance.jpg' />
										</column>
									</page>
									<page pagenumber="12">
										<column tab="fullwidth">
											<swf align="center" src='assets/img/backstabber.jpg' />
										</column>
									</page>
								</chapter>
							</book>;
		public var myXMLList:XMLList = myXML.chapter.page;
		public static const TOTALFLIPS:int = 6;
		public function init():void { 
			myXMLC = new XMLListCollection(myXMLList); 
			myCursor = myXMLC.createCursor(); 
			var sort:Sort = new Sort();  
			sort.fields = [new SortField('@pagenumber', false,false,true)];
			myXMLC.sort=sort;
			myXMLC.refresh();  
			navigate('first');
		} 
		public function countSelection(str:String):void {
			if(myCursor.findAny(XML("<page pagenumber='"+str+"'></page>"))){
				navigate('seek')
			}else {
				ta1.text = 'not found';
			}			
		} 
	    public function nextCollection():void {
			if(! myCursor.afterLast) {
			   myCursor.moveNext(); 
			}
   	    }
	    public function backCollection():void {
			if(!myCursor.beforeFirst) {
				myCursor.movePrevious(); 
			}
	    }
	    public function firstCollection():void {
			myCursor.seek(CursorBookmark.FIRST); 
	    }
	    public function lastCollection():void {
			myCursor.seek(CursorBookmark.LAST); 
	    }
		public function seekCollection():void { 	
			var mark:CursorBookmark=myCursor.bookmark;
			while (myCursor.moveNext()) { 
			}
			myCursor.seek(mark);
		}
	    public function navigate(caseStr:String):void {
			switch(caseStr) {
				case 'first':
				  firstCollection();
				  break;
				case 'back':
				  backCollection();
				  break;
				case 'next':
				  nextCollection();
				  break;
				case 'last':
				  lastCollection();
				  break;
				case 'seek':
				  seekCollection();
				  break;
	       }
		   var sixPgsXMLList:XMLList = new XMLList();
		   var xmlIndex:int = myXMLC.getItemIndex(myCursor.current);
		   xmlIndex % 2 ? xmlIndex = xmlIndex - 1 : xmlIndex;
		   xmlIndex+TOTALFLIPS>myXMLC.length ? xmlIndex = myXMLC.length - TOTALFLIPS : xmlIndex;
		   for (var flipPg:int = 0; flipPg < TOTALFLIPS; flipPg++) {			   
			sixPgsXMLList += XMLList(myXMLC.getItemAt(xmlIndex+flipPg));
		   } 		   
		   var firstPage:Boolean = sixPgsXMLList[0] == myXMLC.getItemAt(0);
		   var lastPage:Boolean = sixPgsXMLList[sixPgsXMLList.length()-1] == myXMLC.getItemAt(myXMLC.length-1);
	       enableDisableButtons(firstPage,lastPage); 
		   ta1.text = String(sixPgsXMLList );
		}
		public function enableDisableButtons(firstPg:Boolean,lastPg:Boolean):void {			
			var firstInCollection:Boolean = myXMLC.getItemAt(0) ==  myCursor.current;
			firstInCollection = firstPg;
			first.enabled = back.enabled = !firstInCollection
			var lastInCollection:Boolean = myXMLC.getItemAt(myXMLC.length - 1) ==  myCursor.current;
			lastInCollection = lastPg;
			last.enabled = next.enabled = !lastInCollection;
		}
        ]]>
    </mx:Script>
    <mx:ComboBox id="myCB" dataProvider="{myXMLC}" change="{countSelection(String(myCB.selectedItem.@pagenumber))}" selectedItem="{String(myCursor.current)}" />
	<mx:TextInput id="ta2" change="{countSelection(ta2.text)}" text="{String(myCursor.current.@pagenumber)}" />
    <mx:TextArea id="ta1" height="200" width="175"/>
	<mx:HBox>
		<mx:Button label="first" id="first" click="navigate('first')"/>
		<mx:Button label="back" id="back" click="navigate('back')"/>
		<mx:Button label="next" id="next" click="navigate('next')"/>
		<mx:Button label="last" id="last" click="navigate('last')"/>
	</mx:HBox>
</mx:Application>