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Code from Flex 4 Documentation "Using Adobe Flex 4".
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<!-- sparktextcontrols/FindLeafExample.mxml -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:mx="library://ns.adobe.com/flex/mx"
xmlns:s="library://ns.adobe.com/flex/spark">
<s:layout>
<s:VerticalLayout />
</s:layout>
<fx:Script>
import flashx.textLayout.elements.TextRange;
import flashx.textLayout.elements.*;
private function selectEntireLeaf(e:Event):void {
/* Get the location of the cursor. This is the character position of the
cursor in the RichEditableText control after the user clicks on it. */
var activePos:int = richTxt1.selectionActivePosition;
/* Change the color of the entire leaf under the cursor position. */
var leaf:SpanElement = richTxt1.textFlow.findLeaf(activePos) as SpanElement;
leaf.color = 0x00FF33;
}
</fx:Script>
<s:Panel>
<s:RichEditableText id="richTxt1" click="selectEntireLeaf(event)"
selectable="true" editable="true" textAlign="justify"
percentWidth="100">
<s:textFlow>
<s:TextFlow>
<s:p>
<s:span>
1) Lorem ipsum dolor sit amet, consectetur
adipiscing elit.
</s:span>
</s:p>
<s:p>
<s:span>
2) Cras posuere posuere sem, eu congue orci mattis
quis.
</s:span>
</s:p>
<s:p>
<s:span>
3) Curabitur pulvinar tellus venenatis ipsum tempus
lobortis.
</s:span>
</s:p>
</s:TextFlow>
</s:textFlow>
</s:RichEditableText>
</s:Panel>
</s:Application>
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