Adobe® Flex® 4 Language Reference
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flash.desktop 
DockIcon 
Packageflash.desktop
Classpublic class DockIcon
InheritanceDockIcon Inheritance InteractiveIcon Inheritance Icon Inheritance EventDispatcher Inheritance Object

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0

The DockIcon class represents the MacOS X®-style dock icon.

You can use the DockIcon class to change the appearance of the standard icon; for example, to animate the icon or add informational graphics. You can also add items to the dock icon menu. The menu items that you add are displayed above the standard menu items.

An instance of the DockIcon class cannot be created. Get the object representing the operating system dock icon from NativeApplication.icon.

Not all operating systems have dock icons. Check NativeApplication.supportsDockIcon to determine whether dock icons are supported on the current system. If dock icons are supported, the NativeApplication.icon property is of type DockIcon. Otherwise, the type of NativeApplication.icon is another subclass of InteractiveIcon, typically SystemTrayIcon.

Important: Attempting to call a DockIcon class method on the NativeApplication.icon object on an operating system for which AIR does not support dock icons generates a run-time exception.

View the examples

See also



Public Properties
 PropertyDefined By
  AIR-only bitmaps : Array
[override] The icon image as an array of BitmapData objects of different sizes.
DockIcon
 Inheritedconstructor : Object
A reference to the class object or constructor function for a given object instance.
Object
  AIR-only height : int
[override] [read-only] The current display height of the icon in pixels.
DockIcon
  AIR-only menu : NativeMenu
The system-supplied menu of this dock icon.
DockIcon
 Inheritedprototype : Object
[static] A reference to the prototype object of a class or function object.
Object
  AIR-only width : int
[override] [read-only] The current display width of the icon in pixels.
DockIcon
Public Methods
 MethodDefined By
 Inherited
addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registers an event listener object with an EventDispatcher object so that the listener receives notification of an event.
EventDispatcher
  
AIR-only bounce(priority:String = "informational"):void
Notifies the user that an event has occurred that may require attention.
DockIcon
 Inherited
Dispatches an event into the event flow.
EventDispatcher
 Inherited
Checks whether the EventDispatcher object has any listeners registered for a specific type of event.
EventDispatcher
 Inherited
Indicates whether an object has a specified property defined.
Object
 Inherited
Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.
Object
 Inherited
Indicates whether the specified property exists and is enumerable.
Object
 Inherited
removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void
Removes a listener from the EventDispatcher object.
EventDispatcher
 Inherited
Sets the availability of a dynamic property for loop operations.
Object
 Inherited
Returns the string representation of this object, formatted according to locale-specific conventions.
Object
 Inherited
Returns the string representation of the specified object.
Object
 Inherited
Returns the primitive value of the specified object.
Object
 Inherited
Checks whether an event listener is registered with this EventDispatcher object or any of its ancestors for the specified event type.
EventDispatcher
Events
 Event Summary Defined By
 Inherited[broadcast event] Dispatched when the Flash Player or AIR application gains operating system focus and becomes active.EventDispatcher
 Inherited[broadcast event] Dispatched when the Flash Player or AIR application operating loses system focus and is becoming inactive.EventDispatcher
Property Detail
AIR-only 

bitmaps

property
bitmaps:Array[override]

Runtime Versions: AIR 1.0

The icon image as an array of BitmapData objects of different sizes.

When an icon is displayed in a given operating system context, the bitmap in the array closest to the displayed size is used (and scaled if necessary). Common sizes include 16x16, 32x32, 48x48, and 128x128. (512x512 pixel icons may be used for some operating system icons in the near future.)

In some contexts, the operating system may use a default system icon if nothing has been assigned to the bitmaps property. In other contexts, no icon appears.

To set or change the icon appearance, assign an array of BitmapData objects to the bitmaps property:

     icon.bitmaps = new Array(icon16x16.bitmapData, icon128x128.bitmapData);
     

Modifying the bitmaps array directly has no effect.

To clear the icon image, assign an empty array to the bitmaps property.

Note: When loading image files for an icon, the PNG file format generally provides the best alpha blending. The GIF format supports only on or off transparency (no blending). The JPG format does not support transparency at all.



Implementation
    override public function get bitmaps():Array
    override public function set bitmaps(value:Array):void
AIR-only 

height

property 
height:int  [read-only] [override]

Runtime Versions: AIR 1.0

The current display height of the icon in pixels.

Some icon contexts support dynamic sizes. The height property indicates the height of the icon chosen from the bitmaps array for the current context. The actual display height may be different if the operating system has scaled the icon.



Implementation
    override public function get height():int
AIR-only 

menu

property 
menu:NativeMenu

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0

The system-supplied menu of this dock icon.

Any items in the menu are displayed above the standard items. The standard items cannot be modified or removed.



Implementation
    public function get menu():NativeMenu
    public function set menu(value:NativeMenu):void

Example  ( How to use this example )
The following example adds an item to the dock icon menu:
 import flash.desktop.NativeApplication;
 import flash.events.Event;
 
private function createDockIconMenu():void{
    if(NativeApplication.supportsDockIcon){                
        var dockIcon:DockIcon = NativeApplication.nativeApplication.icon as DockIcon;
        
        var dockMenu:NativeMenu = new NativeMenu();
        var command:NativeMenuItem = dockMenu.addItem(new NativeMenuItem("Command"));
        command.addEventListener(Event.SELECT, onCommand);
        
        dockIcon.menu = dockMenu;
    }
}

 private function onCommand(event:Event):void{
     //do command...
 }
AIR-only 

width

property 
width:int  [read-only] [override]

Runtime Versions: AIR 1.0

The current display width of the icon in pixels.

Some icon contexts support dynamic sizes. The width property indicates the width of the icon chosen from the bitmaps array for the current context. The actual display width may be different if the operating system has scaled the icon.



Implementation
    override public function get width():int
Method Detail

AIR-only bounce

()method
public function bounce(priority:String = "informational"):void

Language Version: ActionScript 3.0
Runtime Versions: AIR 1.0

Notifies the user that an event has occurred that may require attention.

Calling this method bounces the dock icon if, and only if, the application is in the background. If the priority is NotificationType.Informational then the icon bounces once. If the priority is NotificationType.Critical then the icon bounces until the application is brought to the foreground.

Parameters

priority:String (default = "informational") — The urgency with which to bounce the dock.

See also


Example  ( How to use this example )

The following example bounces the dock icon until the user activates the application:
 import flash.display.DockIcon;
 import flash.display.NotificationType;
 import flash.desktop.NativeApplication;

 if(NativeApplication.supportsDockIcon){
     var dockIcon:DockIcon = NativeApplication.nativeApplication.icon As DockIcon;
     dockIcon.bounce(NotificationType.CRITICAL);
 }
 
DockIconExample.as

The following example loads a sequence of images and, when the timer is started with the dock icon menu, animates the icon image. (For the example to work, you must supply a set of icon images and change the URLs in the imageURLs array.)

 package {
    import flash.desktop.DockIcon;
    import flash.desktop.NativeApplication;
    import flash.display.Loader;
    import flash.display.NativeMenu;
    import flash.display.NativeMenuItem;
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.events.TimerEvent;
    import flash.net.URLRequest;
    import flash.utils.Timer;

    public class AnimatedDockIcon extends Sprite
    {
        private var imageURLs:Array =  ['gfx/frame01.png',
                                        'gfx/frame02.png',
                                        'gfx/frame03.png',
                                        'gfx/frame04.png'];
        
        private var images:Array = new Array();
        private var animTimer:Timer = new Timer(100);
                                        
        public function AnimatedDockIcon()
        {
            NativeApplication.nativeApplication.autoExit = false;
            
            addEventListener(Event.COMPLETE, loadImages);
            loadImages();
            
            animTimer.addEventListener(TimerEvent.TIMER,advanceFrame);
            addMenu();
            stage.nativeWindow.close();
        }
        
        private function addMenu():void{
            var menu:NativeMenu = new NativeMenu();
            var start:NativeMenuItem = menu.addItem(new NativeMenuItem("Start animation"));
            var stop:NativeMenuItem = menu.addItem(new NativeMenuItem("Stop animation"));
            start.addEventListener(Event.SELECT, startTimer);
            stop.addEventListener(Event.SELECT, stopTimer);
            
            var dockIcon:DockIcon =    NativeApplication.nativeApplication.icon as DockIcon;
            dockIcon.menu = menu;
        }
        
        private function startTimer(event:Event):void{
            animTimer.start();
        }

        private function stopTimer(event:Event):void{
            animTimer.stop();
        }

        private var currentFrame:int = 0;
        private function advanceFrame(event:Event):void{
            if(currentFrame < images.length){
                currentFrame++;
            } else {
                currentFrame = 0;
            }
            NativeApplication.nativeApplication.icon.bitmaps = [images[currentFrame]];
        }
        

        private function loadImages(event:Event = null):void{
            if(event != null){
                images.push(event.target.content.bitmapData);
            }
            if(imageURLs.length > 0){
                var urlString:String = imageURLs.pop();
                var loader:Loader = new Loader();
                loader.contentLoaderInfo.addEventListener(Event.COMPLETE, loadImages, false, 0, true);
                loader.load(new URLRequest(urlString));
            } else {
                var complete:Event = new Event(Event.COMPLETE,false,false);
                dispatchEvent(complete);
            }
        }
    }
}