Flex - ToggleButtonBar Control


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Introduction

The ToggleButtonBar control provides a horizontal or vertical group of buttons that maintain their selected or deselected state.

Class Declaration

Following is the declaration for mx.controls.ToggleButtonBar class −

public class ToggleButtonBar
   extends ButtonBar

Public Properties

S.No Property & Description
1

selectedIndex : int

[override] Index of the selected button.

2

toggleOnClick : Boolean

Specifies whether the currently selected button can be deselected by the user.

Public Methods

S.No Method & Description
1

ToggleButtonBar()

Constructor.

Methods Inherited

This class inherits methods from the following classes −

  • mx.controls.ButtonBar
  • mx.controls.NavBar
  • mx.containers.Box
  • mx.core.Container
  • mx.core.UIComponent
  • mx.core.FlexSprite
  • flash.display.Sprite
  • flash.display.DisplayObjectContainer
  • flash.display.InteractiveObject
  • flash.display.DisplayObject
  • flash.events.EventDispatcher
  • Object

Flex ToggleButtonBar Control Example

Let us follow the following steps to check usage of ToggleButtonBar control in a Flex application by creating a test application −

Step Description
1 Create a project with a name HelloWorld under a package com.tutorialspoint.client as explained in the Flex - Create Application chapter.
2 Modify HelloWorld.mxml as explained below. Keep rest of the files unchanged.
3 Compile and run the application to make sure business logic is working as per the requirements.

Following is the content of the modified mxml file src/com.tutorialspoint/HelloWorld.mxml.

<?xml version = "1.0" encoding = "utf-8"?>
<s:Application xmlns:fx = "http://ns.adobe.com/mxml/2009"
   xmlns:s = "library://ns.adobe.com/flex/spark"
   xmlns:mx = "library://ns.adobe.com/flex/mx
   width = "100%" height = "100%" minWidth = "500" minHeight = "500">
   
   <fx:Style source = "/com/tutorialspoint/client/Style.css" />
   <fx:Script>
      <![CDATA[
         import mx.events.ItemClickEvent;
         private function sectionClickHandler(event:ItemClickEvent):void {
            sectionContents.text = "Contents for " + event.label;
         }
      ]]>
   </fx:Script>
   
   <fx:Declarations>
      <fx:Array id = "sectionList">
         <fx:String>Section 1</fx:String>
         <fx:String>Section 2</fx:String>
         <fx:String>Section 3</fx:String>
         <fx:String>Section 4</fx:String>
         <fx:String>Section 5</fx:String>
      </fx:Array>
   </fx:Declarations>   
   
   <s:BorderContainer width = "630" height = "480" id = "mainContainer" 
      styleName = "container">
      <s:VGroup width = "100%" height = "100%" gap = "50" 
         horizontalAlign = "center" verticalAlign = "middle">
         <s:Label id = "lblHeader" text = "Complex Controls Demonstration" 
            fontSize = "40" color = "0x777777" styleName = "heading" />
            
         <s:Panel id = "toggleButtonBarPanel" title = "Using ToggleButtonBar"
            width = "500" height = "300" >
            <s:layout>
               <s:VerticalLayout  gap = "10" verticalAlign = "middle"
                  horizontalAlign = "center" paddingTop = "10" />	
            </s:layout>
               
            <mx:ToggleButtonBar itemClick = "sectionClickHandler(event);" 
               dataProvider = "{sectionList}" />
            <s:BorderContainer width = "90%" height = "70%" 
               borderColor = "0x323232">
               <s:VGroup verticalAlign = "middle" 
                  horizontalAlign = "center" width = "100%" height = "100%">
                  <s:Label id = "sectionContents"
                     text = "Contents for Section 1" />	
               </s:VGroup>	
            </s:BorderContainer>							
         </s:Panel>				
      </s:VGroup>	 
   </s:BorderContainer>	
</s:Application>

Once you are ready with all the changes done, let us compile and run the application in normal mode as we did in Flex - Create Application chapter. If everything is fine with your application, it will produce the following result: [ Try it online ]

Flex ToggleButtonBar Control
flex_complex_controls.htm

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