flash.system.SystemUpdater - Adobe® Flex® 4 Language Reference (Flex 4)

Package	flash.system
Class	public class SystemUpdater
Inheritance	SystemUpdater EventDispatcher Object

Language Version:

ActionScript 3.0

Runtime Versions:

AIR 1.0 Flash Player 10.1

The SystemUpdater class allows you to update modules of the Flash Player, such as the DRM module for Flash Access, as well as the Flash Player itself. Available modules are listed in the SystemUpdaterType class.

Flash Player identifies the need for a Flash-Access-module update by dispatching a NetStatusEvent event. The event has a code property with a value of "DRM.UpdateNeeded". For updates to the Flash Access module, user consent is not required. Listen for the event and initiate the update by calling update("DRM").

Flash Player identifies the need for a player update by dispatching a StatusEvent event, with several possible code property values (see the status event). For updates to the player, user consent is required. Listen for the event and present the user with the option to update. The user must agree to the actual update and initiate the update by, for example, clicking a button in the user interface. You can then initiate the player update directly in ActionScript by calling update("SYSTEM").

Note: The SystemUpdater API is supported on all desktop platforms.

See also

flash.system.SystemUpdaterType

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

Public Methods

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	Method		Defined By
		SystemUpdater() Constructor.	SystemUpdater
		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
		cancel():void Cancels an active update.	SystemUpdater
		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
		propertyIsEnumerable(name:String):Boolean Indicates whether the specified property exists and is enumerable.	Object
		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
		update(type:String):void Begins an update of a given type.	SystemUpdater
		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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	Summary	Defined By
activate	[broadcast event] Dispatched when the Flash Player or AIR application gains operating system focus and becomes active.	EventDispatcher
cancel	Dispatched when an update of the player itself is cancelled by the user.	SystemUpdater
complete	Dispatched when the update completes.	SystemUpdater
deactivate	[broadcast event] Dispatched when the Flash Player or AIR application operating loses system focus and is becoming inactive.	EventDispatcher
ioError	Dispatched when an I/O error occurs.	SystemUpdater
open	Dispatched when an update begins.	SystemUpdater
progress	Dispatched to indicate download progress.	SystemUpdater
securityError	Dispatched upon encountering a security error.	SystemUpdater
status	Dispatched when the update fails.	SystemUpdater

Constructor Detail

SystemUpdater

()

Constructor

public function SystemUpdater()

Language Version:

ActionScript 3.0

Runtime Versions:

AIR 1.0 Flash Player 10.1

Constructor.

Method Detail

cancel

()

method

public function cancel():void

Language Version:

ActionScript 3.0

Runtime Versions:

AIR 1.0 Flash Player 10.1

Cancels an active update.

update

()

method

public function update(type:String):void

Language Version:

ActionScript 3.0

Runtime Versions:

AIR 1.0 Flash Player 10.1

Begins an update of a given type. Update types are one of the string constants defined in the SystemUpdaterType class. Only one update is allowed at a time across all browsers.

After the update begins, listen for the events defined in this class. The following events events indicate the end of an update and allow a new update or update attempt to proceed, as does calling the update() function:

complete
cancel
securityError
ioError
status

Parameters

type:String

cancel

Event

Event Object Type: flash.events.Event
property Event.type = flash.events.Event.CANCEL

Language Version:

ActionScript 3.0

Runtime Versions:

AIR 1.0 Flash Player 10.1

Dispatched when an update of the player itself is cancelled by the user. This event is dispatched only when an update of type SystemUpdaterType.SYSTEM is requested and the user cancels the update.

The Event.CANCEL constant defines the value of the type property of a cancel event object.

This event has the following properties:

Property	Value
`bubbles`	`false`
`cancelable`	`false`; there is no default behavior to cancel.
`currentTarget`	The object that is actively processing the Event object with an event listener.
`target`	A reference to the object on which the operation is canceled.

complete

Event

Event Object Type: flash.events.Event
property Event.type = flash.events.Event.COMPLETE

Language Version:

ActionScript 3.0

Runtime Versions:

AIR 1.0 Flash Player 10.1

Dispatched when the update completes.

The Event.COMPLETE constant defines the value of the type property of a complete event object.

This event has the following properties:

Property	Value
`bubbles`	`false`
`cancelable`	`false`; there is no default behavior to cancel.
`currentTarget`	The object that is actively processing the Event object with an event listener.
`target`	The network object that has completed loading.

ioError

Event

Event Object Type: flash.events.IOErrorEvent
property IOErrorEvent.type = flash.events.IOErrorEvent.IO_ERROR

Language Version:

ActionScript 3.0

Runtime Versions:

AIR 1.0 Flash Player 10.1

Dispatched when an I/O error occurs. For example, one error that can cause this event is a loss of Internet connectivity.

Defines the value of the type property of an ioError event object.

This event has the following properties:

Property	Value
`bubbles`	`false`
`cancelable`	`false`; there is no default behavior to cancel.
`currentTarget`	The object that is actively processing the Event object with an event listener.
`errorID`	A reference number associated with the specific error (AIR only).
`target`	The network object experiencing the input/output error.
`text`	Text to be displayed as an error message.

open

Event

Event Object Type: flash.events.Event
property Event.type = flash.events.Event.OPEN

Language Version:

ActionScript 3.0

Runtime Versions:

AIR 1.0 Flash Player 10.1

Dispatched when an update begins. The update is complete when a 'complete' event is sent, or when an IOErrorEvent, SecurityErrorEvent, or StatusEvent is sent.

The Event.OPEN constant defines the value of the type property of an open event object.

This event has the following properties:

Property	Value
`bubbles`	`false`
`cancelable`	`false`; there is no default behavior to cancel.
`currentTarget`	The object that is actively processing the Event object with an event listener.
`target`	The network object that has opened a connection.

progress

Event

Event Object Type: flash.events.ProgressEvent
property ProgressEvent.type = flash.events.ProgressEvent.PROGRESS

Language Version:

ActionScript 3.0

Runtime Versions:

AIR 1.0 Flash Player 10.1

Dispatched to indicate download progress. This event is like the progress event in the Loader and URLLoader classes.

Defines the value of the type property of a progress event object.

This event has the following properties:

Property	Value
`bubbles`	`false`
`bytesLoaded`	The number of items or bytes loaded at the time the listener processes the event.
`bytesTotal`	The total number of items or bytes that ultimately will be loaded if the loading process succeeds.
`cancelable`	`false`; there is no default behavior to cancel.
`currentTarget`	The object that is actively processing the Event object with an event listener.
`target`	The object reporting progress.

securityError

Event

Event Object Type: flash.events.SecurityErrorEvent
property SecurityErrorEvent.type = flash.events.SecurityErrorEvent.SECURITY_ERROR

Language Version:

ActionScript 3.0

Runtime Versions:

AIR 1.0 Flash Player 10.1

Dispatched upon encountering a security error. For example, a security error that can cause this event is if the player tries to perform an update when an update is not permitted by security policy.

The SecurityErrorEvent.SECURITY_ERROR constant defines the value of the type property of a securityError event object.

This event has the following properties:

Property	Value
`bubbles`	`false`
`cancelable`	`false`; there is no default behavior to cancel.
`currentTarget`	The object that is actively processing the Event object with an event listener.
`target`	The network object reporting the security error.
`text`	Text to be displayed as an error message.

status

Event

Event Object Type: flash.events.StatusEvent
property StatusEvent.type = flash.events.StatusEvent.STATUS

Language Version:

ActionScript 3.0

Runtime Versions:

AIR 1.0 Flash Player 10.1

Dispatched when the update fails. An update can fail for one of the following reasons:

The caller is running on an unsupported platform or architecture. In this case, the value of the code property is "DRM.UpdateFailedNotSupported" and the value of the level property is "error".
The requested update package cannot be located on the server. In this case, the value of the code property is "DRM.UpdateFailedNotCurrentlyAvailable" and the value of the level property is "error".
The Flash Access module is not installed. This error is similar to the "DRM.UpdateNeeded" code, which is dispatched by NetStatusEvent. However, in this case, a more recent version of Flash Player must be downloaded first. In this case, the value of the code property is "DRM.UpdateNeededButIncompatible" and the value of the level property is "error". To perform an update of Flash Player, call SystemUpdater.update(SystemUpdaterType.SYSTEM).
The new DRM module could not be downloaded. In this case, the value of the code property is "DRM.UpdateFailed" and the value of the level property is "error".

Defines the value of the type property of a status event object.

This event has the following properties:

Property	Value
`bubbles`	`false`
`cancelable`	`false`; there is no default behavior to cancel.
`code`	A description of the object's status.
`currentTarget`	The object that is actively processing the Event object with an event listener.
`level`	The category of the message, such as `"status"`, `"warning"` or `"error"`.
`target`	The object reporting its status.