| Package | org.osmf.elements |
| Class | public class DurationElement |
| Inheritance | DurationElement  ProxyElement MediaElement EventDispatcher Object |
| Language Version: | ActionScript 3.0 |
| Product Version: | OSMF 1.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
The DurationElement class is especially useful for creating delays in the presentation of a media composition. For example, the following code presents a sequence of videos, separated from each other by five-second delays.
var sequence:SerialElement = new SerialElement();
sequence.addChild(new VideoElement(new URLResource("http://www.example.com/video1.flv")));
sequence.addChild(new DurationElement(5));
sequence.addChild(new VideoElement(new URLResource("http://www.example.com/ad.flv")));
sequence.addChild(new DurationElement(5));
sequence.addChild(new VideoElement(new URLResource("http://www.example.com/video2.flv")));
// Assign the SerialElement to the MediaPlayer.
player.media = sequence;
The following example presents a sequence of rotating banners. The delays separating the appearances of the banners are created with DurationElements. In addition, the images themselves are wrapped in DurationElements to enable them to support a duration.
// The first banner does not appear for five seconds.
// Each banner is shown for 20 seconds.
// There is a 15-second delay between images.
var bannerSequence:SerialElement = new SerialElement();
bannerSequence.addChild(new DurationElement(5));
bannerSequence.addChild(new DurationElement(20,new ImageElement(new URLResource("http://www.example.com/banner1.jpg")));
bannerSequence.addChild(new DurationElement(15));
bannerSequence.addChild(new DurationElement(20,new ImageElement(new URLResource("http://www.example.com/banner2.jpg")));
bannerSequence.addChild(new DurationElement(15));
bannerSequence.addChild(new DurationElement(20,new ImageElement(new URLResource("http://www.example.com/banner3.jpg")));
clipStartTime and clipEndTime properties.
Related API Elements
Public Properties
Hide Inherited Public Properties
Show Inherited Public PropertiesProtected Properties
Public Methods
| Method | Defined By | ||
|---|---|---|---|
Constructor. | DurationElement | ||
 | 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 | |
|
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 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
Constructor Detail
DurationElement | () | Constructor |
public function DurationElement(duration:Number, mediaElement:MediaElement = null)| Language Version: | ActionScript 3.0 |
| Product Version: | OSMF 1.0 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Constructor.
Parametersduration:Number — Duration of the DurationElement's TimeTrait, in seconds.
| |
mediaElement:MediaElement (default = null) |
Examples How to use this example
DurationElementExample.as
package
{
import flash.display.Sprite;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import org.osmf.elements.BeaconElement;
import org.osmf.elements.DurationElement;
import org.osmf.elements.ImageElement;
import org.osmf.elements.VideoElement;
import org.osmf.media.MediaPlayer;
import org.osmf.media.MediaPlayerSprite;
import org.osmf.media.URLResource;
public class DurationElementExample extends Sprite
{
public function DurationElementExample()
{
super();
stage.scaleMode = StageScaleMode.NO_SCALE;
stage.align = StageAlign.TOP_LEFT;
var mediaPlayerSprite:MediaPlayerSprite = new MediaPlayerSprite();
var imageElement:ImageElement = new ImageElement();
imageElement.resource = new URLResource("http://mediapm.edgesuite.net/strobe/content/test/train.jpg");
// Shows the image for 10 seconds.
var durationElement:DurationElement = new DurationElement(10, imageElement);
addChild(mediaPlayerSprite);
mediaPlayerSprite.media = durationElement;
}
}
}
Thu Dec 6 2018, 01:12 PM -08:00