Using String properties and methods to get text indexes.

          

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<!-- textcontrols/TextRangeExample.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 mx.controls.textClasses.TextRange 
            private function resetText():void { 
                 ta1.text = "This is a test of the emergency broadcast system. It is only a test."; 
            } 
            public function alterText():void { 
               // Create a TextRange object starting with "the" and ending at the 
               // first period. Replace it with new formatted HTML text. 
               var tr1:TextRange = new TextRange( 
                  ta1, false, ta1.text.indexOf("the", 0), ta1.text.indexOf(".", 0) 
               ); 
               tr1.htmlText="<i>italic HTML text</i>" 
               // Create a TextRange object with the remaining text. 
               // Select the text and change its formatting. 
               var tr2:TextRange = new TextRange( 
                ta1, true, ta1.text.indexOf("It", 0), ta1.text.length-1 
               ); 
               tr2.color=0xFF00FF; 
               tr2.fontSize=18; 
               tr2.fontStyle = "italic"; // any other value turns italic off 
               tr2.fontWeight = "bold"; // any other value turns bold off 
               ta1.setSelection(0, 0); 
            } 
          </fx:Script>
    <mx:TextArea id="ta1" fontSize="12" fontWeight="bold" width="100%"
        height="100">
        <mx:text>
            This is a test of the emergency broadcast system. It is only a test.
        </mx:text>
    </mx:TextArea>
    <s:HGroup>
        <mx:Button label="Alter Text" click="alterText();" />
        <mx:Button label="Reset" click="resetText();" />
    </s:HGroup>
</s:Application>

Related examples in the same category

1.	Use the text property with standard text:
2.	Use an initialization function to set the text property to a string that contains these characters
3.	Creating a Text control with
4.	A multiline text string in a Text control
5.	Use htmlText to display HTML text
6.	text property changes the text displayed in text controls
7.	htmltext tag
8.	HTMLText With Condense White
9.	HTML Text With Entities
10.	Bind RichTextEdit html text value to Text
11.	The space between the editor and the text is created by the Spacer control
12.	Text is Selectable static text
13.	RichText with span
14.	Using the text property with standard text
15.	Using an initialization function to set the text property to a string that contains these characters
16.	Select the first 10 characters of various text controls
17.	To select all text in a text control, use the selectAll() method
18.	The text in the controls update accordingly
19.	RichText unicodeRange
20.	text property with standard text
21.	tag are not indented because any leading tab or space characters would appear in the displayed text.
22.	Init Text
23.	HTML formatted text, using MXML and ActionScript to specify the text
24.	HTMLTags inside htmlText of Text
25.	Text Control
26.	Display Gradient Text
27.	Select the 10th line and then scrolls to that line when you click the button

Using String properties and methods to get text indexes. : Text « Components « Flex

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