Flex创建文本编辑器代码实例及在线运行效果

在线运行效果请访问：http://tongqiuyan.blog.163.com/blog/static/19554530220119162275231/ 

涉及到控件主要是RichTextEditor、VBox、Panel等。

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="horizontal" fontSize="12">
	<mx:Script>
		<![CDATA[
			// 导入类库
			import mx.controls.TextInput;
			import mx.controls.TextArea;
			import mx.events.FlexEvent;
			// 定义最大输入字数
			private const MAX_CHARS:uint = 100;
			// 设置文本输入区域的最大输入字数
			private function richTextEditor_creationComplete(evt:FlexEvent):void
			{
				RichTextEditor(evt.currentTarget).textArea.maxChars = MAX_CHARS;
			}
			// 显示当前输入字数和最大字数
			private function richTextEditor_change(evt:Event):void
			{
				var rte:RichTextEditor = evt.currentTarget as RichTextEditor;
				var rteTA:TextArea = rte.textArea as TextArea;
				rte.status = rteTA.length + "/"+rteTA.maxChars;
			}
			// 设置工具栏内超链接输入框的显示或者隐藏
			private function toogle_linkTextInput():void
			{
				var textInput:TextInput = richTextEditor.linkTextInput;
				var isSelected:Boolean = cbLinkButton.selected;
				textInput.visible = isSelected;
				textInput.includeInLayout = isSelected;
			}
		]]>
	</mx:Script>
	<mx:Array id="fontFamilyArr">
		<mx:String>Arial</mx:String>
		<mx:String>Verdana</mx:String>
		<mx:String>黑体</mx:String>
		<mx:String>楷体</mx:String>
	</mx:Array>
	<mx:Panel width="650" height="400" layout="horizontal" title="文本编辑器">
		<mx:VBox height="100%" width="100%">
			<mx:ApplicationControlBar dock="true" width="100%">
				<mx:CheckBox id="cbBar" label="显示工具栏：" selected="true" />
				<mx:CheckBox id="cbLinkButton" label="显示超链接按钮：" selected="true" change="toogle_linkTextInput();" />
			</mx:ApplicationControlBar>
			<mx:RichTextEditor id="richTextEditor" width="100%" height="100%" title="请输入任意文字，并修改格式。" showToolTips="true"
							   fontFamilyToolTip="字体" colorPickerToolTip="颜色" showControlBar="{cbBar.selected}"
							   change="richTextEditor_change(event);" creationComplete="richTextEditor_creationComplete(event);"
							   fontFamilyArray="{fontFamilyArr}">
			</mx:RichTextEditor>
		</mx:VBox>
	</mx:Panel>
</mx:Application>