Flex3 DataGrid拖拽到ClumnChart动态显示图表

々上善若水々 — Wed, 22 Apr 2009 02:46:00 GMT

支持多行同时拖拽，重复数据不重得添加，添加了图表右键菜单.

xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="init()">
<mx:Script>

        import mx.controls.Alert;
        import mx.controls.DataGrid;
        import mx.managers.DragManager;
        import mx.core.UIComponent;
        import mx.collections.ArrayCollection;
        import mx.events.DragEvent;

        //DataGrid的数据源
     [Bindable]
     private var medalsAC:ArrayCollection = new ArrayCollection( [
         { Country: "美国", Gold: 35, Silver:39, Bronze: 29 },
         { Country: "中国", Gold: 99, Silver:17, Bronze: 14 },
         { Country: "日本", Gold: 32, Silver:27, Bronze: 38 },
         { Country: "韩国", Gold: 27, Silver:27, Bronze: 2 },
         { Country: "新加坡", Gold: 55, Silver:27, Bronze: 63 },
         { Country: "朝鲜", Gold: 11, Silver:21, Bronze: 16 },
         { Country: "马来西亚", Gold: 7, Silver:14, Bronze: 77 },
          { Country: "澳洲", Gold: 0, Silver:12, Bronze: 11 }
          ]);

     //ColumnChart的数据源, 默认为空
     [Bindable]
     private var chartData:ArrayCollection = new ArrayCollection();
       [Bindable]
       private var menu:ContextMenu = new ContextMenu();
      //让columnChart监听拖拽事件
     private function init():void{
         column.addEventListener(DragEvent.DRAG_ENTER,dragEnterHandle);
         column.addEventListener(DragEvent.DRAG_DROP,dragdropHandle);
         //初始化右键菜单
         initMenu();
     }
      //初始化chart右键菜单
      private function initMenu():void
      {
          var clear:ContextMenuItem = new ContextMenuItem("清空图表");
          menu.customItems.push(clear);
          clear.addEventListener(ContextMenuEvent.MENU_ITEM_SELECT,clearAction);
      }
      //处理鼠标右键事件
      private function clearAction(event:ContextMenuEvent):void
      {
          this.chartData.removeAll();
      }

     //因为只有DataGrid推拽，所以直接允许，如果界面上有多个控件监听拖拽事件，需要判断后允许正确的数据进入
     private function dragEnterHandle(e:DragEvent):void{
         DragManager.acceptDragDrop(e.currentTarget as UIComponent)
     }

     //拖拽放开后处理
     private function dragdropHandle(e:DragEvent):void{
         //往column chart的dataprovider中添加拖拽数据。
         //如果只需要特定的数据进入column chart，可以先做数据筛选。
         var datas: Array =  (e.dragInitiator as DataGrid).selectedItems;
         for(var i:int = 0; i < datas.length; i ++)
         {
             //不包含已经存在的数据再添加
             if(!chartData.contains(datas[i]))
             {
                 chartData.addItem(datas[i]);
             }
         }

     }

    ]]>
mx:Script>

    <mx:DataGrid dragEnabled="true" dataProvider="{medalsAC}"  x="192" y="52" allowMultipleSelection="true">
        <mx:columns>
            <mx:DataGridColumn dataField="Country" headerText="国家"  />
            <mx:DataGridColumn dataField="Gold" headerText="金牌"/>
            <mx:DataGridColumn dataField="Silver" headerText="银牌"/>
            <mx:DataGridColumn dataField="Bronze" headerText="铜牌"/>
        mx:columns>
    mx:DataGrid>


    <mx:SolidColor id="sc1" color="yellow" alpha=".8"/>
    <mx:SolidColor id="sc2" color="0xCCCCCC" alpha=".6"/>
    <mx:SolidColor id="sc3" color="0xFFCC66" alpha=".6"/>


    <mx:Stroke id="s1" color="yellow" weight="2"/>
    <mx:Stroke id="s2" color="0xCCCCCC" weight="2"/>
    <mx:Stroke id="s3" color="0xFFCC66" weight="2"/>


    <mx:ColumnChart id="column" contextMenu="{menu}"
            height="202"
            width="402"
            paddingLeft="5"
            paddingRight="5"
            showDataTips="true"
            dataProvider="{chartData}"
         x="192" y="215">


            <mx:horizontalAxis>

                <mx:CategoryAxis categoryField="Country" />
            mx:horizontalAxis>


            <mx:series>
                <mx:ColumnSeries
                    xField="Country"
                    yField="Gold"
                    displayName="金牌"
                    fill="{sc1}"
                    stroke="{s1}"
                />
                <mx:ColumnSeries
                    xField="Country"
                    yField="Silver"
                    displayName="银牌"
                    fill="{sc2}"
                    stroke="{s2}"
                />
                <mx:ColumnSeries
                    xField="Country"
                    yField="Bronze"
                    displayName="铜牌"
                    fill="{sc3}"
                    stroke="{s3}"
                />
            mx:series>
        mx:ColumnChart>

mx:Application>

源码下载

々上善若水々 2009-04-22 10:46 发表评论

BlogJava-我的漫漫程序之旅-文章分类-flex3

Flex3 DataGrid拖拽到ClumnChart动态显示图表