com.adobe.gravity.tracker.ServiceTracker - ActionScript® 3.0 Reference for the Adobe® Flash® Platform

Package	com.adobe.gravity.tracker
Class	public class ServiceTracker
Inheritance	ServiceTracker EventDispatcher Object
Implements	IServiceTrackerCustomizer

Language Version:

ActionScript 3.0

Product Version:

Adobe Digital Enterprise Platform Experience Services - Client Component Framework 10

Runtime Versions:

AIR 1.1, Flash Player 9

ServiceTracker objects dynamically track the set of services matching specified criteria, updating appropriately as services are registered and unregistered.

Public Properties

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	Property		Defined By
		constructor : Object A reference to the class object or constructor function for a given object instance.	Object
		prototype : Object [static] A reference to the prototype object of a class or function object.	Object
		service : Object [read-only] The highest-ranked service that matches the tracking criteria.	ServiceTracker
		services : Array [read-only] The set of services that are being tracked, in ranking order.	ServiceTracker
		size : uint [read-only] The number of services that currently match the tracking criteria.	ServiceTracker
		trackingCount : uint [read-only] A number that increments every time the set of tracked services changes.	ServiceTracker

Protected Properties

	Property		Defined By
		context : IBundleContext [read-only] The bundle context for this tracker.	ServiceTracker
		filter : IFilter [read-only] The service filter that this tracker is using, if any.	ServiceTracker

Public Methods

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	Method		Defined By
		ServiceTracker(context:IBundleContext, serviceInterface:Class, filter:IFilter = null, customizer:com.adobe.gravity.tracker:IServiceTrackerCustomizer = null) Constructor.	ServiceTracker
		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
		addingService(reference:IServiceReference):com.adobe.gravity.utility.async:IToken Called when a new service appears that is to be tracked.	ServiceTracker
		close():void Stop tracking services.	ServiceTracker
		dispatchEvent(event:Event):Boolean Dispatches an event into the event flow.	EventDispatcher
		hasEventListener(type:String):Boolean Checks whether the EventDispatcher object has any listeners registered for a specific type of event.	EventDispatcher
		hasOwnProperty(name:String):Boolean Indicates whether an object has a specified property defined.	Object
		isPrototypeOf(theClass:Object):Boolean Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.	Object
		modifiedService(reference:IServiceReference, service:Object):void Called when service properties are modified.	ServiceTracker
		open():com.adobe.gravity.utility.async:IToken Start tracking services.	ServiceTracker
		propertyIsEnumerable(name:String):Boolean Indicates whether the specified property exists and is enumerable.	Object
		removedService(reference:IServiceReference, service:Object):void Called when a service is no longer to be tracked.	ServiceTracker
		removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void Removes a listener from the EventDispatcher object.	EventDispatcher
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Sets the availability of a dynamic property for loop operations.	Object
		toLocaleString():String Returns the string representation of this object, formatted according to locale-specific conventions.	Object
		toString():String Returns the string representation of the specified object.	Object
		valueOf():Object Returns the primitive value of the specified object.	Object
		willTrigger(type:String):Boolean Checks whether an event listener is registered with this EventDispatcher object or any of its ancestors for the specified event type.	EventDispatcher

Events

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	Event		Summary	Defined By
		activate	[broadcast event] Dispatched when the Flash Player or AIR application gains operating system focus and becomes active.	EventDispatcher
		deactivate	[broadcast event] Dispatched when the Flash Player or AIR application operating loses system focus and is becoming inactive.	EventDispatcher

Property Detail

context

property

context:IBundleContext [read-only]

Language Version:

ActionScript 3.0

Product Version:

Adobe Digital Enterprise Platform Experience Services - Client Component Framework 10

Runtime Versions:

AIR 1.1, Flash Player 9

The bundle context for this tracker.

Implementation
protected function get context():IBundleContext

filter

property

filter:IFilter [read-only]

Language Version:

ActionScript 3.0

Product Version:

Adobe Digital Enterprise Platform Experience Services - Client Component Framework 10

Runtime Versions:

AIR 1.1, Flash Player 9

The service filter that this tracker is using, if any.

Implementation
protected function get filter():IFilter

service

property

service:Object [read-only]

Language Version:

ActionScript 3.0

Product Version:

Adobe Digital Enterprise Platform Experience Services - Client Component Framework 10

Runtime Versions:

AIR 1.1, Flash Player 9

The highest-ranked service that matches the tracking criteria.

This property can be used as the source for data binding. When this property is modified, it dispatches the serviceChanged event.

Implementation
public function get service():Object

services

property

services:Array [read-only]

Language Version:

ActionScript 3.0

Product Version:

Adobe Digital Enterprise Platform Experience Services - Client Component Framework 10

Runtime Versions:

AIR 1.1, Flash Player 9

The set of services that are being tracked, in ranking order.

This property can be used as the source for data binding. When this property is modified, it dispatches the servicesChanged event.

Implementation
public function get services():Array

size

property

size:uint [read-only]

Language Version:

ActionScript 3.0

Product Version:

Adobe Digital Enterprise Platform Experience Services - Client Component Framework 10

Runtime Versions:

AIR 1.1, Flash Player 9

The number of services that currently match the tracking criteria.

This property can be used as the source for data binding. When this property is modified, it dispatches the sizeChanged event.

Implementation
public function get size():uint

trackingCount

property

trackingCount:uint [read-only]

Language Version:

ActionScript 3.0

Product Version:

Adobe Digital Enterprise Platform Experience Services - Client Component Framework 10

Runtime Versions:

AIR 1.1, Flash Player 9

A number that increments every time the set of tracked services changes. Can be used to check whether there have been changes to the set of tracked services.

This property can be used as the source for data binding. When this property is modified, it dispatches the trackingCountChanged event.

Implementation
public function get trackingCount():uint

Constructor Detail

ServiceTracker

()

Constructor

public function ServiceTracker(context:IBundleContext, serviceInterface:Class, filter:IFilter = null, customizer:com.adobe.gravity.tracker:IServiceTrackerCustomizer = null)

Language Version:

ActionScript 3.0

Product Version:

Adobe Digital Enterprise Platform Experience Services - Client Component Framework 10

Runtime Versions:

AIR 1.1, Flash Player 9

Constructor.

Parameters

	`context:IBundleContext` — A bundle context for performing service operations.

	`serviceInterface:Class` — The interface for the services to be tracked.

	`filter:IFilter` (default = `null`) — An optional filter to constrain the set of tracked services.

	`customizer:com.adobe.gravity.tracker:IServiceTrackerCustomizer` (default = `null`) — An IServiceTrackerCustomizer with which to customize the behaviour of this tracker.

Method Detail

addingService

()

method

public function addingService(reference:IServiceReference):com.adobe.gravity.utility.async:IToken

Language Version:

ActionScript 3.0

Product Version:

Adobe Digital Enterprise Platform Experience Services - Client Component Framework 10

Runtime Versions:

AIR 1.1, Flash Player 9

Called when a new service appears that is to be tracked. Note that implementations of this method must retrieve the service object from the service registry. The simplest implementation would be

         public function addingService(reference:IServiceReference):IToken
         {
           return BundleContext.currentContext.getService(reference);
         }

Parameters

reference:IServiceReference — The reference for the new service.

Returns

com.adobe.gravity.utility.async:IToken — A token used to set success and failure handlers to be called when the operation has completed. The success handler must be called with the object to be returned by the tracker as the service object.

close

()

method

public function close():void

Language Version:

ActionScript 3.0

Product Version:

Adobe Digital Enterprise Platform Experience Services - Client Component Framework 10

Runtime Versions:

AIR 1.1, Flash Player 9

Stop tracking services.

modifiedService

()

method

public function modifiedService(reference:IServiceReference, service:Object):void

Language Version:

ActionScript 3.0

Product Version:

Adobe Digital Enterprise Platform Experience Services - Client Component Framework 10

Runtime Versions:

AIR 1.1, Flash Player 9

Called when service properties are modified.

Parameters

	`reference:IServiceReference` — The reference for the service.

	`service:Object` — The service object.

open

()

method

public function open():com.adobe.gravity.utility.async:IToken

Language Version:

ActionScript 3.0

Product Version:

Adobe Digital Enterprise Platform Experience Services - Client Component Framework 10

Runtime Versions:

AIR 1.1, Flash Player 9

Start tracking services.

Returns

com.adobe.gravity.utility.async:IToken — A token used to set success and failure handlers to be called when the operation has completed. Success handlers will be called with no parameters.

removedService

()

method

public function removedService(reference:IServiceReference, service:Object):void

Language Version:

ActionScript 3.0

Product Version:

Adobe Digital Enterprise Platform Experience Services - Client Component Framework 10

Runtime Versions:

AIR 1.1, Flash Player 9

Called when a service is no longer to be tracked. Note that implementations must release the service object from the service registry. The simplest implementation would be

         public function removedService(reference:IServiceReference, service:Object):void
         {
           BundleContext.currentContext.ungetService(reference);
         }

Parameters

	`reference:IServiceReference`

	`service:Object`

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Classes x

context

filter

service

services

size

trackingCount

ServiceTracker

addingService

close

modifiedService

open

removedService