MediaBase (Google Web Toolkit Javadoc)

java.lang.Object
- com.google.gwt.user.client.ui.UIObject
- - com.google.gwt.user.client.ui.Widget
  - - com.google.gwt.user.client.ui.FocusWidget
    - - com.google.gwt.media.client.MediaBase

All Implemented Interfaces:

HasAllDragAndDropHandlers, HasAllFocusHandlers, HasAllGestureHandlers, HasAllKeyHandlers, HasAllMediaHandlers, HasAllMouseHandlers, HasAllTouchHandlers, HasBlurHandlers, HasCanPlayThroughHandlers, HasClickHandlers, HasDoubleClickHandlers, HasDragEndHandlers, HasDragEnterHandlers, HasDragHandlers, HasDragLeaveHandlers, HasDragOverHandlers, HasDragStartHandlers, HasDropHandlers, HasEndedHandlers, HasFocusHandlers, HasGestureChangeHandlers, HasGestureEndHandlers, HasGestureStartHandlers, HasKeyDownHandlers, HasKeyPressHandlers, HasKeyUpHandlers, HasLoadedMetadataHandlers, HasMouseDownHandlers, HasMouseMoveHandlers, HasMouseOutHandlers, HasMouseOverHandlers, HasMouseUpHandlers, HasMouseWheelHandlers, HasProgressHandlers, HasTouchCancelHandlers, HasTouchEndHandlers, HasTouchMoveHandlers, HasTouchStartHandlers, HasAttachHandlers, HasHandlers, EventListener, Focusable, HasEnabled, HasFocus, HasVisibility, IsWidget, SourcesClickEvents, SourcesFocusEvents, SourcesKeyboardEvents, SourcesMouseEvents

Direct Known Subclasses:

Audio, Video
```
public abstract class MediaBase
extends FocusWidget
implements HasAllMediaHandlers
```
A widget representing a media element.
Experimental API: This API is still under development and is subject to change.

Nested Class Summary
- Nested classes/interfaces inherited from class com.google.gwt.user.client.ui.UIObject
  UIObject.DebugIdImpl, UIObject.DebugIdImplEnabled

Field Summary
- Fields inherited from class com.google.gwt.user.client.ui.UIObject
  DEBUG_ID_PREFIX

Constructor Summary

Constructors
Modifier Constructor and Description

protected MediaBase(MediaElement element)
Protected constructor.

Constructors
Modifier	Constructor and Description
`protected`	`MediaBase(MediaElement element)` Protected constructor.

Method Summary

Methods
Modifier and Type	Method and Description
`HandlerRegistration`	`addCanPlayThroughHandler(CanPlayThroughHandler handler)` Adds a `CanPlayThroughEvent` handler.
`HandlerRegistration`	`addEndedHandler(EndedHandler handler)` Adds a `EndedEvent` handler.
`HandlerRegistration`	`addLoadedMetadataHandler(LoadedMetadataHandler handler)` Adds a `LoadedMetadataEvent` handler.
`HandlerRegistration`	`addProgressHandler(ProgressHandler handler)` Adds a `ProgressEvent` handler.
`SourceElement`	`addSource(java.lang.String url)` Add a source element to this media.
`SourceElement`	`addSource(java.lang.String url, java.lang.String type)` Add a source element to this media, specifying the type (format) of the media.
`java.lang.String`	`canPlayType(java.lang.String type)` Returns `true` if the native player is capable of playing content of the given MIME type.
`TimeRanges`	`getBuffered()` Returns a `TimeRanges` object indicating which portions of the source have been buffered locally.
`java.lang.String`	`getCurrentSrc()` Returns the URL of the current media source, or the empty String if no source is set.
`double`	`getCurrentTime()` Returns the current time within the source media stream.
`double`	`getDefaultPlaybackRate()` Returns the default playback rate, where 1.0 corresponds to normal playback.
`double`	`getDuration()` Returns the duration of the source media stream, in seconds.
`MediaError`	`getError()` Returns the type of error that has occurred while attempting to load and play the media.
`double`	`getInitialTime()` Returns the time to which the media stream was seeked at the time it was loaded, in seconds, or 0.0 if the position is unknown.
`MediaElement`	`getMediaElement()` Returns the attached Media Element.
`int`	`getNetworkState()` Returns the network state, one of `MediaElement.NETWORK_EMPTY`, `MediaElement.NETWORK_IDLE`, `MediaElement.NETWORK_LOADING`, or `MediaElement.NETWORK_NO_SOURCE`.
`double`	`getPlaybackRate()` Returns the playback rate, where 1.0 corresponds to normal playback.
`TimeRanges`	`getPlayed()` Returns a `TimeRanges` object indicating which portions of the source have been played.
`java.lang.String`	`getPreload()` Returns the preload setting, one of `MediaElement.PRELOAD_AUTO`, `MediaElement.PRELOAD_METADATA`, or `MediaElement.PRELOAD_NONE`.
`int`	`getReadyState()` Returns the current state of the media with respect to rendering the current playback position, as one of the constants `MediaElement.HAVE_CURRENT_DATA`, `MediaElement.HAVE_ENOUGH_DATA`, `MediaElement.HAVE_FUTURE_DATA`, `MediaElement.HAVE_METADATA`, or `MediaElement.HAVE_NOTHING` .
`TimeRanges`	`getSeekable()` Returns a `TimeRanges` object indicating which portions of the source are seekable.
`java.lang.String`	`getSrc()` Returns the source URL for the media, or `null` if none is set.
`double`	`getStartOffsetTime()` Returns the time corresponding to the zero time in the media timeline, measured in seconds since midnight, January 1 1970 UTC, or `Double.NaN` if none is specified.
`double`	`getVolume()` Returns the current audio volume setting for the media, as a number between 0.0 and 1.0.
`boolean`	`hasControls()` Returns `true` if the media player should display interactive controls (for example, to control play/pause, seek position, and volume), `false` otherwise.
`boolean`	`hasEnded()` Returns `true` if playback has reached the end of the media, `false` otherwise.
`boolean`	`isAutoplay()` Returns `true` if autoplay is enabled, `false` otherwise.
`boolean`	`isLoop()` Returns `true` if the user agent is to seek back to the start of the media once playing has ended, `false` otherwise.
`boolean`	`isMuted()` Returns `true` if the volume is to be muted (overriding the normal volume setting), `false` otherwise.
`boolean`	`isPaused()` Returns `true` if playback is paused, `false` otherwise.
`boolean`	`isSeeking()` Returns `true` if the playback position is in the process of changing discontinuously, e.g., by use of the interactive controls, `false` otherwise.
`void`	`load()` Causes the resource to be loaded.
`void`	`pause()` Causes playback of the resource to be paused.
`void`	`play()` Causes playback of the resource to be started or resumed.
`void`	`removeSource(SourceElement source)` Remove the specified `SourceElement` from this media.
`void`	`setAutoplay(boolean autoplay)` Enables or disables autoplay of the resource.
`void`	`setControls(boolean controls)` Enables or disables interactive controls.
`void`	`setCurrentTime(double time)` Sets the current playback time within the media stream, in seconds.
`void`	`setDefaultPlaybackRate(double rate)` Sets the default playback rate.
`void`	`setLoop(boolean loop)` Enables or disables looping.
`void`	`setMuted(boolean muted)` Enables or disables muting.
`void`	`setPlaybackRate(double rate)` Sets the playback rate.
`void`	`setPreload(java.lang.String preload)` Changes the preload setting to one of `MediaElement.PRELOAD_AUTO`, `MediaElement.PRELOAD_METADATA`, or `MediaElement.PRELOAD_NONE`.
`void`	`setSrc(java.lang.String url)` Sets the source URL for the media.
`void`	`setVolume(double volume)` Sets the playback volume.

Methods inherited from class com.google.gwt.user.client.ui.FocusWidget
addBlurHandler, addClickHandler, addClickListener, addDoubleClickHandler, addDragEndHandler, addDragEnterHandler, addDragHandler, addDragLeaveHandler, addDragOverHandler, addDragStartHandler, addDropHandler, addFocusHandler, addFocusListener, addGestureChangeHandler, addGestureEndHandler, addGestureStartHandler, addKeyboardListener, addKeyDownHandler, addKeyPressHandler, addKeyUpHandler, addMouseDownHandler, addMouseListener, addMouseMoveHandler, addMouseOutHandler, addMouseOverHandler, addMouseUpHandler, addMouseWheelHandler, addMouseWheelListener, addTouchCancelHandler, addTouchEndHandler, addTouchMoveHandler, addTouchStartHandler, getFocusImpl, getTabIndex, isEnabled, onAttach, removeClickListener, removeFocusListener, removeKeyboardListener, removeMouseListener, removeMouseWheelListener, setAccessKey, setEnabled, setFocus, setTabIndex

Methods inherited from class com.google.gwt.user.client.ui.Widget
addAttachHandler, addBitlessDomHandler, addDomHandler, addHandler, asWidget, asWidgetOrNull, createHandlerManager, delegateEvent, doAttachChildren, doDetachChildren, fireEvent, getHandlerCount, getLayoutData, getParent, isAttached, isOrWasAttached, onBrowserEvent, onDetach, onLoad, onUnload, removeFromParent, setLayoutData, sinkEvents, unsinkEvents

Methods inherited from class com.google.gwt.user.client.ui.UIObject
addStyleDependentName, addStyleName, ensureDebugId, ensureDebugId, ensureDebugId, getAbsoluteLeft, getAbsoluteTop, getElement, getOffsetHeight, getOffsetWidth, getStyleElement, getStyleName, getStyleName, getStylePrimaryName, getStylePrimaryName, getTitle, isVisible, isVisible, onEnsureDebugId, removeStyleDependentName, removeStyleName, resolvePotentialElement, setElement, setElement, setHeight, setPixelSize, setSize, setStyleDependentName, setStyleName, setStyleName, setStyleName, setStyleName, setStylePrimaryName, setStylePrimaryName, setTitle, setVisible, setVisible, setWidth, sinkBitlessEvent, toString

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.google.gwt.event.shared.HasHandlers
fireEvent

- Constructor Detail
  - MediaBase
```
protected MediaBase(MediaElement element)
```
    Protected constructor.
- Method Detail
  - addCanPlayThroughHandler
```
public HandlerRegistration addCanPlayThroughHandler(CanPlayThroughHandler handler)
```
    Description copied from interface: HasCanPlayThroughHandlers
    
    Adds a CanPlayThroughEvent handler.
    
    Specified by:
    
    addCanPlayThroughHandler in interface HasCanPlayThroughHandlers
    
    Parameters:
    handler - the media CanPlayThrough handler
    
    Returns:
    HandlerRegistration used to remove this handler
  - addEndedHandler
```
public HandlerRegistration addEndedHandler(EndedHandler handler)
```
    Description copied from interface: HasEndedHandlers
    
    Adds a EndedEvent handler.
    
    Specified by:
    
    addEndedHandler in interface HasEndedHandlers
    
    Parameters:
    handler - the media ended handler
    
    Returns:
    HandlerRegistration used to remove this handler
  - addProgressHandler
```
public HandlerRegistration addProgressHandler(ProgressHandler handler)
```
    Description copied from interface: HasProgressHandlers
    
    Adds a ProgressEvent handler.
    
    Specified by:
    
    addProgressHandler in interface HasProgressHandlers
    
    Parameters:
    handler - the media progress handler
    
    Returns:
    HandlerRegistration used to remove this handler
  - addLoadedMetadataHandler
```
public HandlerRegistration addLoadedMetadataHandler(LoadedMetadataHandler handler)
```
    Description copied from interface: HasLoadedMetadataHandlers
    
    Adds a LoadedMetadataEvent handler.
    
    Specified by:
    
    addLoadedMetadataHandler in interface HasLoadedMetadataHandlers
    
    Parameters:
    handler - the media loadedmetadata handler
    
    Returns:
    HandlerRegistration used to remove this handler
  - addSource
```
public SourceElement addSource(java.lang.String url)
```
    Add a source element to this media. The browser will request source files from the server until it finds one it can play.
    Only use this method if you do not know the type of the source file, as the browser cannot determine the format from the filename and must download each source until a compatible one is found. Instead, you should specify the type for the media using addSource(String, String) so the browser can choose a source file without downloading the file.
    
    Parameters:
    url - a String URL
    See Also:
    addSource(String, String)
  - addSource
```
public SourceElement addSource(java.lang.String url,
                      java.lang.String type)
```
    Add a source element to this media, specifying the type (format) of the media. The browser will choose a supported source file and download it.
    The type is the format or encoding of the media represented by the source element. For example, the type of an AudioElement could be one of "audio/ogg", AudioElement.TYPE_MP3, or AudioElement.TYPE_WAV.
    
    You can also add the codec information to the type, giving the browser even more information about whether or not it can play the file (Example: " audio/ogg; codec=vorbis");
    
    Parameters:
    url - a String URL
    type - the type (format) of the media
    See Also:
    getSrc()
  - canPlayType
```
public java.lang.String canPlayType(java.lang.String type)
```
    Returns true if the native player is capable of playing content of the given MIME type.
    
    Parameters:
    type - a String representing a MIME type
    
    Returns:
    one of MediaElement.CAN_PLAY_PROBABLY, MediaElement.CAN_PLAY_MAYBE, or MediaElement.CANNOT_PLAY
  - getBuffered
```
public TimeRanges getBuffered()
```
    Returns a TimeRanges object indicating which portions of the source have been buffered locally.
    
    Returns:
    a TimeRanges instance, or null.
  - getCurrentSrc
```
public java.lang.String getCurrentSrc()
```
    Returns the URL of the current media source, or the empty String if no source is set.
    
    Returns:
    a String URL
  - getCurrentTime
```
public double getCurrentTime()
```
    Returns the current time within the source media stream.
    
    Returns:
    the time, in seconds, as a double
    See Also:
    setCurrentTime(double)
  - getDefaultPlaybackRate
```
public double getDefaultPlaybackRate()
```
    Returns the default playback rate, where 1.0 corresponds to normal playback. If no rate has been set, 1.0 is returned.
    
    Returns:
    the current default playback rate, or 1.0 if it has not been set
    See Also:
    setDefaultPlaybackRate(double)
  - getDuration
```
public double getDuration()
```
    Returns the duration of the source media stream, in seconds. If the duration is unknown, Double.NaN is returned. For unbounded media streams, Double.POSITIVE_INFINITY is returned.
    
    Returns:
    a positive duration in seconds, NaN, or Infinity
  - getError
```
public MediaError getError()
```
    Returns the type of error that has occurred while attempting to load and play the media. If no error has occurred, null is returned.
    
    Returns:
    a MediaError instance, or null
  - getInitialTime
```
public double getInitialTime()
```
    Returns the time to which the media stream was seeked at the time it was loaded, in seconds, or 0.0 if the position is unknown.
    
    Returns:
    the initial time, or 0.0 if unknown
  - getMediaElement
```
public MediaElement getMediaElement()
```
    Returns the attached Media Element.
    
    Returns:
    the Media Element
  - getNetworkState
```
public int getNetworkState()
```
    Returns the network state, one of MediaElement.NETWORK_EMPTY, MediaElement.NETWORK_IDLE, MediaElement.NETWORK_LOADING, or MediaElement.NETWORK_NO_SOURCE.
    
    Returns:
    an integer constant indicating the network state
    See Also:
    MediaElement.NETWORK_EMPTY, MediaElement.NETWORK_IDLE, MediaElement.NETWORK_LOADING, MediaElement.NETWORK_NO_SOURCE
  - getPlaybackRate
```
public double getPlaybackRate()
```
    Returns the playback rate, where 1.0 corresponds to normal playback. If the rate has not been set, 1.0 is returned.
    
    Returns:
    the playback rate, if known, otherwise 1.0
    See Also:
    setPlaybackRate(double)
  - getPlayed
```
public TimeRanges getPlayed()
```
    Returns a TimeRanges object indicating which portions of the source have been played.
    
    Returns:
    a TimeRanges instance, or null.
  - getPreload
```
public java.lang.String getPreload()
```
    Returns the preload setting, one of MediaElement.PRELOAD_AUTO, MediaElement.PRELOAD_METADATA, or MediaElement.PRELOAD_NONE.
    
    Returns:
    the preload setting
    See Also:
    setPreload(String), MediaElement.PRELOAD_AUTO, MediaElement.PRELOAD_METADATA, MediaElement.PRELOAD_NONE
  - getReadyState
```
public int getReadyState()
```
    Returns the current state of the media with respect to rendering the current playback position, as one of the constants MediaElement.HAVE_CURRENT_DATA, MediaElement.HAVE_ENOUGH_DATA, MediaElement.HAVE_FUTURE_DATA, MediaElement.HAVE_METADATA, or MediaElement.HAVE_NOTHING .
    
    Returns:
    an integer constant indicating the ready state
    See Also:
    MediaElement.HAVE_CURRENT_DATA, MediaElement.HAVE_ENOUGH_DATA, MediaElement.HAVE_FUTURE_DATA, MediaElement.HAVE_METADATA, MediaElement.HAVE_NOTHING
  - getSeekable
```
public TimeRanges getSeekable()
```
    Returns a TimeRanges object indicating which portions of the source are seekable.
    
    Returns:
    a TimeRanges instance, or null.
  - getSrc
```
public java.lang.String getSrc()
```
    Returns the source URL for the media, or null if none is set.
    
    Returns:
    a String URL or null
    See Also:
    setSrc(String)
  - getStartOffsetTime
```
public double getStartOffsetTime()
```
    Returns the time corresponding to the zero time in the media timeline, measured in seconds since midnight, January 1 1970 UTC, or Double.NaN if none is specified.
    
    Returns:
    the start time
  - getVolume
```
public double getVolume()
```
    Returns the current audio volume setting for the media, as a number between 0.0 and 1.0.
    
    Returns:
    a number between 0.0 (silent) and 1.0 (loudest)
    See Also:
    setVolume(double)
  - hasControls
```
public boolean hasControls()
```
    Returns true if the media player should display interactive controls (for example, to control play/pause, seek position, and volume), false otherwise.
    
    Returns:
    whether controls should be displayed
    See Also:
    setControls(boolean)
  - hasEnded
```
public boolean hasEnded()
```
    Returns true if playback has reached the end of the media, false otherwise.
    
    Returns:
    whether playback has ended
  - isAutoplay
```
public boolean isAutoplay()
```
    Returns true if autoplay is enabled, false otherwise. When autoplay is enabled, the user agent will begin playback automatically as soon as it can do so without stopping.
    
    Returns:
    the autoplay setting
    See Also:
    setAutoplay(boolean)
  - isLoop
```
public boolean isLoop()
```
    Returns true if the user agent is to seek back to the start of the media once playing has ended, false otherwise.
    
    Returns:
    the loop setting
    See Also:
    setLoop(boolean)
  - isMuted
```
public boolean isMuted()
```
    Returns true if the volume is to be muted (overriding the normal volume setting), false otherwise.
    
    Returns:
    the muting setting
    See Also:
    setMuted(boolean), getVolume(), setVolume(double)
  - isPaused
```
public boolean isPaused()
```
    Returns true if playback is paused, false otherwise.
    
    Returns:
    the paused setting
    See Also:
    pause(), play()
  - isSeeking
```
public boolean isSeeking()
```
    Returns true if the playback position is in the process of changing discontinuously, e.g., by use of the interactive controls, false otherwise.
    
    Returns:
    the seeking status
    See Also:
    setControls(boolean), hasControls()
  - load
```
public void load()
```
    Causes the resource to be loaded.
  - pause
```
public void pause()
```
    Causes playback of the resource to be paused.
  - play
```
public void play()
```
    Causes playback of the resource to be started or resumed.
  - removeSource
```
public void removeSource(SourceElement source)
```
    Remove the specified SourceElement from this media. If the source element is not a child of this widget, it will not be removed.
    
    Parameters:
    source - the source element to remove
    See Also:
    addSource(String, String)
  - setAutoplay
```
public void setAutoplay(boolean autoplay)
```
    Enables or disables autoplay of the resource.
    
    Parameters:
    autoplay - if true, enable autoplay
    See Also:
    isAutoplay()
  - setControls
```
public void setControls(boolean controls)
```
    Enables or disables interactive controls.
    
    Parameters:
    controls - if true, enable controls
    See Also:
    hasControls()
  - setCurrentTime
```
public void setCurrentTime(double time)
```
    Sets the current playback time within the media stream, in seconds.
    
    Parameters:
    time - a number within the ranges given by getSeekable()
    See Also:
    getCurrentTime()
  - setDefaultPlaybackRate
```
public void setDefaultPlaybackRate(double rate)
```
    Sets the default playback rate.
    
    Parameters:
    rate - a double value
    See Also:
    getDefaultPlaybackRate()
  - setLoop
```
public final void setLoop(boolean loop)
```
    Enables or disables looping.
    
    Parameters:
    loop - if true, enable looping
    See Also:
    isLoop()
  - setMuted
```
public void setMuted(boolean muted)
```
    Enables or disables muting.
    
    Parameters:
    muted - if true, enable muting
    See Also:
    isMuted()
  - setPlaybackRate
```
public void setPlaybackRate(double rate)
```
    Sets the playback rate.
    
    Parameters:
    rate - a double value
    See Also:
    getPlaybackRate()
  - setPreload
```
public void setPreload(java.lang.String preload)
```
    Changes the preload setting to one of MediaElement.PRELOAD_AUTO, MediaElement.PRELOAD_METADATA, or MediaElement.PRELOAD_NONE.
    
    Parameters:
    preload - a String constants
    See Also:
    getPreload(), setPreload(String), MediaElement.PRELOAD_AUTO, MediaElement.PRELOAD_METADATA, MediaElement.PRELOAD_NONE
  - setSrc
```
public void setSrc(java.lang.String url)
```
    Sets the source URL for the media.
    Support for different media types varies between browsers. Instead of using this method, you should encode your media in multiple formats and add all of them using addSource(String, String) so the browser can choose a source that it supports.
    
    Parameters:
    url - a String URL
    See Also:
    getSrc(), addSource(String, String)
  - setVolume
```
public void setVolume(double volume)
```
    Sets the playback volume.
    
    Parameters:
    volume - a value between 0.0 (silent) and 1.0 (loudest)
    See Also:
    getVolume()

Class MediaBase

Nested Class Summary

Nested classes/interfaces inherited from class com.google.gwt.user.client.ui.UIObject

Field Summary

Fields inherited from class com.google.gwt.user.client.ui.UIObject

Constructor Summary

Method Summary

Methods inherited from class com.google.gwt.user.client.ui.FocusWidget

Methods inherited from class com.google.gwt.user.client.ui.Widget

Methods inherited from class com.google.gwt.user.client.ui.UIObject

Methods inherited from class java.lang.Object

Methods inherited from interface com.google.gwt.event.shared.HasHandlers

Constructor Detail

MediaBase

Method Detail

addCanPlayThroughHandler

addEndedHandler

addProgressHandler

addLoadedMetadataHandler

addSource

addSource

canPlayType

getBuffered

getCurrentSrc

getCurrentTime

getDefaultPlaybackRate

getDuration

getError

getInitialTime

getMediaElement

getNetworkState

getPlaybackRate

getPlayed

getPreload

getReadyState

getSeekable

getSrc

getStartOffsetTime

getVolume

hasControls

hasEnded

isAutoplay

isLoop

isMuted

isPaused

isSeeking

load

pause

play

removeSource

setAutoplay

setControls

setCurrentTime

setDefaultPlaybackRate

setLoop

setMuted

setPlaybackRate

setPreload

setSrc

setVolume