Flex3 DataGrid拖拽到ClumnChart动态显示图表实现代码

admin Flex

2023-12-05 0 160

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.复制代码代码如下: <?xml version=\”1.0\” encoding=\”utf-8\”?> <mx:Application xmlns:mx=\”http://www.adobe.com/2006/mxml\” layout=\”absolute\” creationComplete=\”init()\”> <mx:Script> <![CDATA[ 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> <!– 定义颜色 –> <mx:SolidColor id=\”sc1\” color=\”yellow\” alpha=\”.8\”/> <mx:SolidColor id=\”sc2\” color=\”0xCCCCCC\” alpha=\”.6\”/> <mx:SolidColor id=\”sc3\” color=\”0xFFCC66\” alpha=\”.6\”/> <!– 定义颜色 –> <mx:Stroke id=\”s1\” color=\”yellow\” weight=\”2\”/> <mx:Stroke id=\”s2\” color=\”0xCCCCCC\” weight=\”2\”/> <mx:Stroke id=\”s3\” color=\”0xFFCC66\” weight=\”2\”/> <!–Column chart设置成能解析Country: \”Russia\”, Gold: 27, Silver:27, Bronze: 38这样的数据项–> <mx:ColumnChart id=\”column\” contextMenu=\”{menu}\” height=\”202\” width=\”402\” paddingLeft=\”5\” paddingRight=\”5\” showDataTips=\”true\” dataProvider=\”{chartData}\” x=\”192\” y=\”215\”> <!–设置水平轴–> <mx:horizontalAxis> <!–水平轴拖动数据到chart后的文字显示–> <mx:CategoryAxis categoryField=\”Country\” /> </mx:horizontalAxis> <!–设置柱子–> <!–fill填充颜色,stroke边框颜色–> <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>

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