flex4 自定义分页组件

<?xml version="1.0" encoding="utf-8"?>  
<mx:HBox xmlns:fx="http://ns.adobe.com/mxml/2009"   
         xmlns:s="library://ns.adobe.com/flex/spark"   
         xmlns:mx="library://ns.adobe.com/flex/mx" >  
    <fx:Script>  
        <![CDATA[ 
            import mx.collections.ArrayCollection; 
            import mx.events.ItemClickEvent; 
            import flash.events.KeyboardEvent; 
            import mx.controls.DataGrid; 
            import mx.validators.NumberValidator; 
            import mx.rpc.events.ResultEvent;  
            import mx.rpc.events.FaultEvent; 
            import mx.controls.Alert; 
            [Bindable] 
            [Embed(source='assets/monitor/a4.png')] 
            public var firstIcon:Class;                
            public var firstPage:uint;  
             
            [Bindable] 
            [Embed(source='assets/monitor/a4.png')] 
            public var preIcon:Class; 
            public var prePage:uint;  
             
            [Bindable] 
            [Embed(source='assets/monitor/a4.png')] 
            public var nextIcon:Class; 
            public var nextPage:uint;  
             
            [Bindable] 
            [Embed(source='assets/monitor/a4.png')] 
            public var lastIcon:Class; 
            public var lastPage:uint; 
             
            [Bindable]public var pageSize:int=15;//单页行数 
            [Bindable]public var totalPage:int=1;//总页数 
            [Bindable]public var currentPage:int=1;//当前页 
            [Bindable]public var totalClum:int=0;//总记录数 
             
            //分页函数 
            public var localFunction:Function=null; 
             
            //重新为当前页的变量赋值 
            public function loadData(pageNum:int):void{ 
                this.pageSize = setPageSize.selectedItem.data as Number;  
                this.totalPage =Math.ceil(this.totalClum/this.pageSize); 
                if(pageNum>0 && pageNum<=this.totalPage){ 
                    this.currentPage=pageNum; 
                    if(this.localFunction!=null){ 
                         
                        localFunction(pageNum); 
                    }else{ 
                        Alert.show("请设置回调方法！"); 
                    } 
                } 
            } 
             
            //重新设置每页显示记录数 
            public function changePagesize():void{ 
                //当前页首条记录的序号 
                var currentPageRows:int=((this.currentPage-1)*this.pageSize); 
                //Alert.show(String(currentPageRows)); 
                //重新设置以后，单页显示记录数 
                this.pageSize = setPageSize.selectedItem.data as Number;  
                //重新设置以后，总页数 
                this.totalPage =Math.ceil(this.totalClum/this.pageSize); 
                //重新调整当前页码           
                //Alert.show(String(newPageNum)); 
                if(this.localFunction!=null){ 
                    localFunction(this.currentPage); 
                }else{ 
                    Alert.show("请设置回调方法！"); 
                } 
            } 
        ]]>  
    </fx:Script>  
    <mx:Text id="temp" text="" visible="false" includeInLayout="false"/>  
    <mx:HBox   
        verticalGap="0"    
        horizontalGap="0"   
        horizontalAlign="center"  
        verticalAlign="middle"  
        >   
        <mx:Text text="{'   共'+(totalClum)+'条记录'}" fontSize="12"/>                  
        <mx:Label   text="每页显示："/>  
        <mx:ComboBox id="setPageSize" width="52" height="16" change="changePagesize()">  
            <mx:dataProvider>  
                <fx:Array>       
                    <fx:Object label="15" data="15" />                                                                                                           
                    <fx:Object label="20" data="20" />  
                    <fx:Object label="30" data="30" />   
                    <fx:Object label="40" data="40" />                                                                                                           
                    <fx:Object label="50" data="50" />  
                    <fx:Object label="60" data="60" />      
                    <fx:Object label="70" data="70" />                                                                                                           
                    <fx:Object label="80" data="80" />                                     
                </fx:Array>  
            </mx:dataProvider>  
        </mx:ComboBox>  
        <mx:Label text="条"/>  
          
        <mx:Button id="firstNavBtn" icon="{firstIcon}" width="10" height="10" click="loadData(1)" enabled="{lbtnPrevious.enabled}"/>  
        <mx:LinkButton id="lbtnFirst" label="首页" click="loadData(1)" enabled="{lbtnPrevious.enabled}" fontSize="12"/>  
          
        <mx:Button id="preNavBtn" icon="{preIcon}" width="7" height="10" click="loadData(currentPage-1)" enabled="{currentPage!=1?true:false}"/>  
        <mx:LinkButton id="lbtnPrevious" label="上一页" click="loadData(currentPage-1)" enabled="{currentPage!=1?true:false}" fontSize="12"/>  
          
        <mx:Text text="{'【 '+(Math.ceil(this.totalClum/this.pageSize)>0?(currentPage):1)+'/'+(Math.ceil(this.totalClum/this.pageSize)>0?Math.ceil(this.totalClum/this.pageSize):1)+'页】  '}" fontSize="12"/>  
          
        <mx:Button id="nextNavBtn" icon="{nextIcon}" width="7" height="10" click="loadData(currentPage+1)" enabled="{Math.ceil(this.totalClum/this.pageSize)>(currentPage)?true:false}"/>  
        <mx:LinkButton id="lbtnNext" label="下一页" click="loadData(currentPage+1)" enabled="{Math.ceil(this.totalClum/this.pageSize)>(currentPage)?true:false}" fontSize="12"/>  
          
        <mx:Button id="lastNavBtn" icon="{lastIcon}" width="10" height="10" click="loadData(Math.ceil(this.totalClum/this.pageSize))" enabled="{lbtnNext.enabled}"/>  
        <mx:LinkButton id="lbtnLast" label="尾页" click="loadData(Math.ceil(this.totalClum/this.pageSize))" enabled="{lbtnNext.enabled}" fontSize="12"/>  
          
        <mx:Label text="跳转到"/>  
        <mx:NumericStepper id="nsPageNum" width="50" height="22" stepSize="1" minimum="1" maximum="{Math.ceil(this.totalClum/this.pageSize)}" enabled="{lbtnJump.enabled}" cornerRadius="0" fontSize="12"/>  
        <mx:Label text="页"/>  
        <mx:LinkButton id="lbtnJump" label="GO"  click="loadData(nsPageNum.value)" enabled="{Math.ceil(this.totalClum/this.pageSize)>1?true:false}" fontSize="12"/>                
          
    </mx:HBox>  
</mx:HBox>  

	protected function test_clickHandler():void  
			{    firstStart=0;  
				 pageSize=pageBar.pageSize;  
				pageBar.localFunction=fun;  
				
			}  
			public function fun(pageNo:int):void  
			{  
				this.firstStart=(pageNo - 1) * pageBar.pageSize;  
				pageSize=pageBar.pageSize; 
				remote.destination = "service";
				//remote.endpoint="messagebroker/amf";
				//调用J2EE端类中的方法
				remote.getFenYeXmls(firstStart,pageSize);
				//监听调用成功事件
				remote.addEventListener(ResultEvent.RESULT,lineresult);               
				//监听失败事件
				remote.addEventListener(FaultEvent.FAULT,linefault);
				
			}