| Package | org.osmf.elements |
| Class | public class CompositeElement |
| Inheritance | CompositeElement  MediaElement EventDispatcher Object |
| Subclasses | ParallelElement, SerialElement |
| Language Version: | ActionScript 3.0 |
| Product Version: | OSMF 1.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
The media elements that make up a media composition are treated as a single, unified media element. For example, if a media composition encapsulates a sequence of videos, the CompositeElement will behave as if it's a single VideoElement, but one which plays several videos in sequence.
Because a CompositeElement maintains a list of MediaElement children, any of which may be CompositeElements themselves, a media composition can be expressed as a tree structure.
Typically a CompositeElement is not instantiated directly but instead is used as the base class for creating specific types of media compositions.
Public Properties
Hide Inherited Public Properties
Show Inherited Public Properties| Property | Defined By | ||
|---|---|---|---|
 | constructor : Object
A reference to the class object or constructor function for a given object instance. | Object | |
| container : IMediaContainer [read-only]
The media container that this element uses. | MediaElement | |
| metadataNamespaceURLs : Vector.<String> [read-only]
A Vector containing the namespace URLs for all Metadata
objects stored within this MediaElement. | MediaElement | |
| numChildren : int [read-only]
The number of child MediaElements in this media composition. | CompositeElement | ||
| resource : MediaResourceBase
The media resource that this media element operates on. | MediaElement | |
| traitTypes : Vector.<String> [read-only]
A Vector of MediaTraitType values representing the trait types on this
media element. | MediaElement | |
Public Methods
| Method | Defined By | ||
|---|---|---|---|
Constructor. | CompositeElement | ||
Adds the specified child to the end of the list. | CompositeElement | ||
Adds the child to the list at the specified index. | CompositeElement | ||
| 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 | |
|
Adds a Metadata object to this MediaElement under the specified namespace URL. | MediaElement | |
|
Dispatches an event into the event flow. | EventDispatcher | |
Gets the child at the specified index. | CompositeElement | ||
Returns the index of the child if it is in the list such that
getChildAt(index) == child. | CompositeElement | ||
|
Returns the Metadata object that is stored under this MediaElement with
the specified namespace URL. | MediaElement | |
|
Returns the media trait of the specified type. | MediaElement | |
|
Checks whether the EventDispatcher object has any listeners registered for a specific type
of event. | EventDispatcher | |
|
Indicates whether an object has a specified property defined. | Object | |
|
Determines whether this media element has a media trait of the
specified type. | MediaElement | |
|
Indicates whether an instance of the Object class is in the prototype chain of the object specified
as the parameter. | Object | |
|
Indicates whether the specified property exists and is enumerable. | Object | |
Removes the specified child and returns it. | CompositeElement | ||
Removes the child at the specified index and returns it. | CompositeElement | ||
|
Removes a listener from the EventDispatcher object. | EventDispatcher | |
|
Removes the Metadata object that was stored under this MediaElement with
the specified namespace URL. | MediaElement | |
|
Sets the availability of a dynamic property for loop operations. | Object | |
|
Returns the string representation of this object, formatted according to locale-specific conventions. | Object | |
|
Returns the string representation of the specified object. | Object | |
|
Returns the primitive value of the specified object. | Object | |
|
Checks whether an event listener is registered with this EventDispatcher object or any of
its ancestors for the specified event type. | EventDispatcher | |
Protected Methods
Property Detail
numChildren | property |
Constructor Detail
CompositeElement | () | Constructor |
public function CompositeElement()| Language Version: | ActionScript 3.0 |
| Product Version: | OSMF 1.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Constructor.
Method Detail
addChild | () | method |
public function addChild(child:MediaElement):MediaElement| Language Version: | ActionScript 3.0 |
| Product Version: | OSMF 1.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Adds the specified child to the end of the list. Equivalent to
addChildAt(child,numChildren).
Parameters
child:MediaElement — The child to add.
|
MediaElement — The MediaElement that you pass in the child parameter.
|
Throws
ArgumentError — If child is null.
| |
RangeError — If the specified index is less than zero or
greater than the length of the list.
| |
Error — If the child is already a child.
|
addChildAt | () | method |
public function addChildAt(child:MediaElement, index:Number):MediaElement| Language Version: | ActionScript 3.0 |
| Product Version: | OSMF 1.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Adds the child to the list at the specified index. If a child already exists at this index, it and all subsequent children will have their index positions increased by one.
Parameters
child:MediaElement — The child to add.
| |
index:Number — The index position at which to add the child.
|
MediaElement — The MediaElement that you pass in the child parameter.
|
Throws
ArgumentError — If child is null.
| |
RangeError — If the specified index is less than zero or
greater than the length of the list.
| |
Error — If the child is already a child.
|
getChildAt | () | method |
public function getChildAt(index:int):MediaElement| Language Version: | ActionScript 3.0 |
| Product Version: | OSMF 1.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Gets the child at the specified index.
Parameters
index:int — The index in the list from which to retrieve the child.
|
MediaElement — The child at that index or null if there is none.
|
getChildIndex | () | method |
public function getChildIndex(child:MediaElement):int| Language Version: | ActionScript 3.0 |
| Product Version: | OSMF 1.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Returns the index of the child if it is in the list such that
getChildAt(index) == child.
Parameters
child:MediaElement — The child to find.
|
int — The index of the child or -1 if the child is not in the
list.
|
removeChild | () | method |
public function removeChild(child:MediaElement):MediaElement| Language Version: | ActionScript 3.0 |
| Product Version: | OSMF 1.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Removes the specified child and returns it. Equivalent to
removeChildAt(child,getChildIndex(child)).
Parameters
child:MediaElement — The child MediaElement to remove.
|
MediaElement — The MediaElement that you pass in the child parameter.
|
Throws
ArgumentError — If the child is not a child of this composition.
|
removeChildAt | () | method |
public function removeChildAt(index:int):MediaElement| Language Version: | ActionScript 3.0 |
| Product Version: | OSMF 1.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Removes the child at the specified index and returns it. Any children with index positions greater than this index have their index positions decreased by one.
Parameters
index:int — The index from which to remove the child.
|
MediaElement — The child at that index.
|
Throws
RangeError — If the specified index is less than zero or
greater than the length of the list.
|
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