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flash.media 

MediaPromise  - AS3

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com.adobe.solutions.acm.authoring.presentation
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com.adobe.solutions.acm.authoring.presentation.common
com.adobe.solutions.acm.authoring.presentation.events
com.adobe.solutions.acm.authoring.presentation.fragment
com.adobe.solutions.acm.authoring.presentation.letter
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com.adobe.solutions.acm.authoring.presentation.preview
com.adobe.solutions.acm.authoring.presentation.rte
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com.adobe.solutions.exm.runtime
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com.adobe.solutions.exm.variable
com.adobe.solutions.prm.constant
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com.adobe.solutions.prm.presentation.asset
com.adobe.solutions.prm.presentation.constant
com.adobe.solutions.prm.presentation.document
com.adobe.solutions.prm.presentation.event
com.adobe.solutions.prm.presentation.file
com.adobe.solutions.prm.presentation.project
com.adobe.solutions.prm.presentation.team
com.adobe.solutions.prm.presentation.util
com.adobe.solutions.prm.service
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com.adobe.solutions.prm.vo
com.adobe.solutions.rca.constant
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com.adobe.solutions.rca.presentation.gantt
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com.adobe.solutions.rca.service
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fl.accessibility
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xd.core.axm.enterprise.view.components
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Language Elements

Global Constants
Global Functions
Operators
Statements, Keywords & Directives
Special Types

Appendixes

What's New
Compiler Errors
Compiler Warnings
Run-Time Errors
Migrating to ActionScript 3
Supported Character Sets
MXML Only Tags
Motion XML Elements
Timed Text Tags
List of deprecated elements
Accessibility Implementation Constants
How to Use ActionScript Examples
Legal notices
Packageflash.media
Classpublic class MediaPromise
InheritanceMediaPromise Inheritance EventDispatcher Inheritance Object
Implements IFilePromise

Language Version: ActionScript 3.0
Runtime Versions: AIR 2.5

The MediaPromise class represents the promise to deliver a media object.

The data property of a MediaEvent object is a MediaPromise instance. You can use the MediaPromise methods to access the promised media object. Supported media formats include still images and video.

You cannot create a MediaPromise object. Calling new MediaPromise() generates a run-time error.

Related API Elements



Public Properties
 PropertyDefined By
 Inheritedconstructor : Object
A reference to the class object or constructor function for a given object instance.
Object
      file : File
[read-only] The File instance representing the media object, if one exists.
MediaPromise
      isAsync : Boolean
[read-only] Reports whether the underlying data source is asynchronous or synchronous.
MediaPromise
      mediaType : String
[read-only] The general type of media, either image or video.
MediaPromise
      relativePath : String
[read-only] The file name of the media object, if one exists.
MediaPromise
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
  
    close():void
Closes the data source.
MediaPromise
 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
  
    open():IDataInput
Opens the underlying data source and returns the IDataInput instance allowing you to read it.
MediaPromise
 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
  
Used by the runtime to report errors.
MediaPromise
 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
  
    close
A MediaPromise object dispatches a close event when the underlying data stream has closed.MediaPromise
  
    complete
A MediaPromise object dispatches a complete event when all data has been read.MediaPromise
 Inherited[broadcast event] Dispatched when the Flash Player or AIR application operating loses system focus and is becoming inactive.EventDispatcher
  
    ioError
A MediaPromise object dispatches an ioError event when an error is encountered while reading the underlying data stream.MediaPromise
  
    progress
A MediaPromise object dispatches progress events as the data becomes available.MediaPromise
Property Detail
    

file

property
file:File  [read-only]

Language Version: ActionScript 3.0
Runtime Versions: AIR 2.5

The File instance representing the media object, if one exists.

This property references a File object if the underlying data source is file-based and the file is accessible to your application. Otherwise, the property is null.



Implementation
    public function get file():File
    

isAsync

property 
isAsync:Boolean  [read-only]

Language Version: ActionScript 3.0
Runtime Versions: AIR 2.5

Reports whether the underlying data source is asynchronous or synchronous.



Implementation
    public function get isAsync():Boolean
    

mediaType

property 
mediaType:String  [read-only]

Language Version: ActionScript 3.0
Runtime Versions: AIR 2.5

The general type of media, either image or video.

The constants in the MediaType class define possible values of this property:

  • MediaType.IMAGE
  • MediaType.VIDEO



Implementation
    public function get mediaType():String

Related API Elements

    

relativePath

property 
relativePath:String  [read-only]

Language Version: ActionScript 3.0
Runtime Versions: AIR 2.5

The file name of the media object, if one exists.

A file name is available if the underlying data source is file-based and the file is accessible to your application. Otherwise, the property is null.



Implementation
    public function get relativePath():String
Method Detail

    close

()method
public function close():void

Language Version: ActionScript 3.0
Runtime Versions: AIR 2.5

Closes the data source.

    open

()method 
public function open():IDataInput

Language Version: ActionScript 3.0
Runtime Versions: AIR 2.5

Opens the underlying data source and returns the IDataInput instance allowing you to read it.

If the underlying data source is asynchronous, then the MediaPromise object dispatches progress and complete events to indicate whether data is available to be read. If the data source is synchronous, all data is available immediately and these events are not dispatched.

Note: You can load a MediaPromise object using the loadFilePromise() method of the Loader class instead of reading the data manually.

Returns
IDataInput

Related API Elements

    reportError

()method 
public function reportError(e:ErrorEvent):void

Language Version: ActionScript 3.0
Runtime Versions: AIR 2.5

Used by the runtime to report errors.

Application code should not call this method.

Parameters

e:ErrorEvent — the error vent to dispatch.

Event Detail
    

close

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

Language Version: ActionScript 3.0
Runtime Versions: AIR 2.5

A MediaPromise object dispatches a close event when the underlying data stream has closed.

The Event.CLOSE constant defines the value of the type property of a close event object.

This event has the following properties:

PropertyValue
bubblesfalse
cancelablefalse; there is no default behavior to cancel.
currentTargetThe object that is actively processing the Event object with an event listener.
targetThe object whose connection has been closed.
    

complete

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

Language Version: ActionScript 3.0
Runtime Versions: AIR 2.5

A MediaPromise object dispatches a complete event when all data has been read. The event indicates that there is no more data available in the underlying stream.

A complete event is not dispatched by a synchronous data source.

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

This event has the following properties:

PropertyValue
bubblesfalse
cancelablefalse; there is no default behavior to cancel.
currentTargetThe object that is actively processing the Event object with an event listener.
targetThe network object that has completed loading.
    

ioError

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

Language Version: ActionScript 3.0
Runtime Versions: AIR 2.5

A MediaPromise object dispatches an ioError event when an error is encountered while reading the underlying data stream. No more data can be read after this event is dispatched.

    

progress

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

Language Version: ActionScript 3.0
Runtime Versions: AIR 2.5

A MediaPromise object dispatches progress events as the data becomes available.

The bytesTotal property of all progress events except the last has the value 0. If all the data is available immediately, no progress events may be dispatched. No progress events are dispatched by synchronous data sources.

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

This event has the following properties:

PropertyValue
bubblesfalse
bytesLoadedThe number of items or bytes loaded at the time the listener processes the event.
bytesTotalThe total number of items or bytes that ultimately will be loaded if the loading process succeeds.
cancelablefalse; there is no default behavior to cancel.
currentTargetThe object that is actively processing the Event object with an event listener.
targetThe object reporting progress.