com.google.gwt.animation.client
Class AnimationScheduler

java.lang.Object
  com.google.gwt.animation.client.AnimationScheduler

Direct Known Subclasses:

AnimationSchedulerImplStandard, AnimationSchedulerImplTimer, StubAnimationScheduler

public abstract class AnimationScheduler
extends java.lang.Object

This class provides task scheduling for animations. Any exceptions thrown by the command objects executed by the scheduler will be passed to the GWT.UncaughtExceptionHandler if one is installed.

AnimationScheduler

public AnimationScheduler()

get

public static AnimationScheduler get()

Returns the default implementation of the AnimationScheduler API.

requestAnimationFrame

public AnimationScheduler.AnimationHandle requestAnimationFrame(AnimationScheduler.AnimationCallback callback)

Schedule an animation, letting the browser decide when to trigger the next step in the animation.

NOTE: If you are animating an element, use requestAnimationFrame(AnimationCallback, Element) instead so the browser can optimize for the specified element.

Using this method instead of a timeout is preferred because the browser is in the best position to decide how frequently to trigger the callback for an animation of the specified element. The browser can balance multiple animations and trigger callbacks at the optimal rate for smooth performance.

Parameters:

callback - the callback to fire

Returns:

a handle to the requested animation frame

See Also:

requestAnimationFrame(AnimationCallback, Element)

requestAnimationFrame

public abstract AnimationScheduler.AnimationHandle requestAnimationFrame(AnimationScheduler.AnimationCallback callback,
                                                                         Element element)

Schedule an animation, letting the browser decide when to trigger the next step in the animation.

Using this method instead of a timeout is preferred because the browser is in the best position to decide how frequently to trigger the callback for an animation of the specified element. The browser can balance multiple animations and trigger callbacks at the optimal rate for smooth performance.

Parameters:

callback - the callback to fire

element - the element being animated

Returns:

a handle to the requested animation frame