testApps/src/textEditBar/StyleBar.mxml

<?xml version="1.0" encoding="utf-8"?>
<!--
  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
  the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

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  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
-->

<mx:HBox xmlns:mx="http://www.adobe.com/2006/mxml" width="1032" height="48">

	<mx:Metadata>
	[Event(name="changeView", type="flash.events.Event")]
	[Event(name="changeStyling", type="flash.events.Event")]
	[Event(name="loadStyle", type="flash.events.Event")]
	[Event(name="unloadStyle", type="flash.events.Event")]
	</mx:Metadata>
	
	<mx:Script>
		<![CDATA[
			import flashx.textLayout.edit.IEditManager;
			import flashx.textLayout.edit.ElementRange;
			import flashx.textLayout.elements.ParagraphElement;
			import flashx.textLayout.elements.TextFlow;
			import flashx.textLayout.formats.TextLayoutFormat;

		static public const stylingTypeArray : Array =
			[{label:"None",    data:"none"},
		 	 {label:"FlexCSS", data:"flexCSS"}];
		 	 
			private var lastRange:ElementRange;
			
			public var activeFlow:TextFlow;
		 	 
		 	 public function setParaStyle (styleName:String):void
		 	 {
		 	 	var em:IEditManager = lastRange.textFlow.interactionManager as IEditManager;
				var paraElem:ParagraphElement = lastRange.firstParagraph;
				while (paraElem)
				{
					em.applyFormatToElement(paraElem,TextLayoutFormat.createTextLayoutFormat({styleName:styleName}));
					if (paraElem == lastRange.lastParagraph)
						break; 
					else
						paraElem = paraElem.getNextParagraph();			
				}		 	 	
		 	 }
		 	 // only working for the first paragraph style name
		 	 // need to walk the paragraphs in the range to show
		 	 // mixed state
		 	 public function update (range:ElementRange):void
		 	 {
				if (!range)
				{
					lastRange = null;
					return;
				}
				var paraStyleName:String;
				var beginPara:ParagraphElement = range.firstParagraph;
				styleName.text = beginPara.styleName;
				lastRange = range; 	 	
		 	 }
			
		]]>
	</mx:Script>

	<mx:Button label="Change View" click="dispatchEvent(new Event('changeView'));"/>
	<mx:ComboBox id="stylingType" selectedIndex="0" dataProvider="{stylingTypeArray}" close="dispatchEvent(new Event('changeStyling'));"/>
	<mx:Button id="loadCSS"   label="Load CSS" click="dispatchEvent(new Event('loadStyle'));" enabled="true"/>
	<mx:Button id="unloadCSS" label="Unload CSS" click="dispatchEvent(new Event('unloadStyle'));" enabled="false"/>
	<mx:Button id="applyStyle" label="Set Para Style:" click="setParaStyle(styleName.text);" enabled="true"/>
	<mx:TextInput id="styleName"/>
</mx:HBox>