FrontEnd

Flex: PieChart LabelFunction

Categories: Flex; Tagged with: Chart • Flex • Flex Chart • PieChart; @ March 4th, 2010 14:54

使用labelFunction 直接显示PieChart的信息, 如下代码定义一个PieChart:

其labelFunction:

		/** 过期分布PieChart的LabelFunction.  */
		protected static function labelFunForChartExpDEtail(item:Object, field:String, index:Number, percentValue:Number):String {
			var percentString:String = percentValue.toString().substr(0, 5);
			return UserQualStatistics.getTypeLabel(item.type) + ":" + "\n" + RM.getString(BUNDLE_DASHBOARD, "info.total") + ":" + item.total + "(" + percentString + "%)";
		}

效果:

Flex:Chart 设置DataTipFunction

Categories: Flex; Tagged with: BarChart • BarSeries • Chart • dataTipFunction • Flex • Flex Chart; @ March 4th, 2010 14:08

某BarChart: showDataTips="true" dataTipFunction="dataTipFunForQualExpSummary"

tipFunction:

		/** 资格过期摘要图表的dataTipFunction. */
		protected  function dataTipFunForQualExpSummary(hd:HitData):String {
			var curObj:Object = hd.item;
			var curSeries:BarSeries = BarSeries(hd.chartItem.element); // 获得当前的BarSeries
			return curObj.qual + "-" + curSeries.displayName + "\n" + uqStatistics.getUQAs(curSeries.xField, curObj.qualObj).length + RM.getString(BUNDLE_DASHBOARD, "label.piece");
		}

效果:

Flex:获得BarChart中选定的对象及BarSeries

Categories: Flex; Tagged with: BarChart • BarSeries • Chart • Flex Chart; @ February 25th, 2010 17:19

如下图:

在点击某个BarSeries, 可通过如下方法获得该BarSeries:

监听ChartItemEvent:

var curObj:Object = e.hitData.item; // 获得当前选定的对象
var curSeries:BarSeries = BarSeries(e.hitData.chartItem.element); // 获得当前选定的BarSeries

Flex: DataGrid使用ListEvent.ITEM_DOUBLE_CLICK监听双击事件

Categories: Flex; Tagged with: ActionScript • DataGrid • DoubleClicked • Flex • ListEvent • MouseEvent; @ January 31st, 2010 16:48

之前没怎么注意, 一直用MouseEvent.DOUBLE_CLICK来监听DataGrid的双击事件. 但这样会造成即使在空行双击也会激发响应.

		datagridClasses.doubleClickEnabled = true;
		datagridClasses.addEventListener(MouseEvent.DOUBLE_CLICK, onDGDoubleClicked);

正确方法应该使用ListEvent.ITEM_DOUBLE_CLICK监听项目双击事件.

		datagridClasses.addEventListener(ListEvent.ITEM_DOUBLE_CLICK, onDGDoubleClicked);

Flex: 使用URLRequest下载文件时的权限验证

Categories: Flex; Tagged with: ActionScript • FileReference • Flex • URLRequest; @ January 27th, 2010 23:49

权限验证:

var fileRef:FileReference = new FileReference();
		var request:URLRequest = new URLRequest(serviceUrl);

		request.method = URLRequestMethod.POST;
		var encoder : Base64Encoder = new Base64Encoder();
		encoder.encode(userName + ":" + password);
		request.requestHeaders.push(new URLRequestHeader("Authorization", "Basic " + encoder.toString())); // ** 增加认证信息

		fileRef.addEventListener(Event.OPEN, onFileDownloadBegin);
		fileRef.addEventListener(Event.COMPLETE, onFileDownloadComplete);
		fileRef.addEventListener(IOErrorEvent.IO_ERROR, onFileDownloadError);
		fileRef.addEventListener(Event.CANCEL, onFileDownLoadCancel);
		fileRef.download(request, getExportFileName(serviceUrl));

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