The getLineIndexOfChar()/getLineLength() : text « TextField « Flash / Flex / ActionScript

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Flash / Flex / ActionScript » TextField » text 
The getLineIndexOfChar()/getLineLength()
 
package
{
import flash.display.Sprite;
import flash.text.TextField;
import flash.text.TextFormat;
import flash.events.TextEvent;
public class Main extends Sprite
{
    private var input:TextField;
    private var text:TextField;
    private var regex:RegExp;
    private var selectedFormat:TextFormat;
    private var defaultFormat:TextFormat;

    public function Main()
    {

        defaultFormat = new TextFormat();
        defaultFormat.bold = false;
        defaultFormat.color = 0x00000;

        selectedFormat = new TextFormat();
        selectedFormat.color = 0xFF0000;
        selectedFormat.bold = true;

        input = new TextField();
        input.type = "input";
        input.border = true;
        input.height = 20;
        addChild(input);
        input.addEventListener(TextEvent.TEXT_INPUT, checkInput);

        text = new TextField();
        text.text = "development.";
        text.wordWrap = true;
        text.multiline = true;
        addChild(text);
        text.y = 200;
    }

    private function checkInput(textEvent:TextEvent):void
    {
        text.setTextFormat(defaultFormat);

        var indexOfInt:int;
        var lineIndex:int;
        var firstChar:int;
        var lastChar:int;
        if((indexOfInt = text.text.indexOf(input.text)) != -1)
        {
            lineIndex = text.getLineIndexOfChar(indexOfInt);
            firstChar = text.getLineOffset(lineIndex);
            lastChar = firstChar + text.getLineLength(lineIndex);
            text.setTextFormat(selectedFormat, firstChar, lastChar);
        }
    }
}
}

        
Related examples in the same category
1. Displaying Text
2. Retrieving Strings from a TextField
3. Special characters, such as \t for tab and \n for newline, can be used within a text string.
4. You can append text by using the += operator or the appendText( ) method
5. Append text to TextField
6. Replaces the characters "bcd" in the text "abcde" with the new text "x"
7. If beginIndex and endIndex are equal, the newText is inserted immediately before the specified beginIndex
8. The url property allows you to add a hyperlink to text.
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