/**
* animate to a given widget. If this is called while an animation is running this is a noop.
*
* @param w the widget to animate to
* @param animation the animation to use
* @param callback a callback that will be called once the animation is finished
*/
public void goTo(Widget w, Animation animation, final AnimationEndCallback callback) {
if (isAnimating) {
return;
}
isAnimating = true;
if (isFirst) {
display.setFirstWidget(w);
} else {
display.setSecondWidget(w);
}
display.animate(
animation,
isFirst,
new AnimationEndCallback() {
@Override
public void onAnimationEnd() {
isAnimating = false;
if (callback != null) {
callback.onAnimationEnd();
}
}
});
isFirst = !isFirst;
}
/**
* Construct an animation helper with a given display
*
* @param display the display to use
*/
public AnimationHelper(AnimatableDisplay display) {
this.display = display;
isFirst = true;
isAnimating = false;
initWidget(display.asWidget());
}