/**
* Add {@link Decor} into this layout. Decor will be added to the layout based on its start page
* and end page. Calling this method will also enables children drawing order, which follows the
* order of the parameters, e.g the first Decor will be drawn first.
*
* @param decor Decor object to be added to this layout.
* @throws IllegalStateException when ViewPager is not set in this layout.
*/
@SuppressWarnings("unused")
public void addDecor(Decor decor) {
if (mViewPager == null) {
throw new IllegalStateException(
"ViewPager is not found in SparkleViewPagerLayout, please provide a ViewPager first");
}
if (decor == null) {
return;
}
// Make sure there is no duplicate.
if (mDecors.contains(decor)) {
return;
}
mDecors.add(decor);
// Add slide in and slide out animations to the presenter.
SparkleAnimationPresenter presenter = SparkleMotionCompat.getAnimationPresenter(mViewPager);
if (presenter == null) {
throw new IllegalStateException("Failed initializing animation");
}
presenter.addAnimation(decor, decor.slideInAnimation, decor.slideOutAnimation);
if (decor.layoutBehindViewPage) {
addView(decor.contentView, mViewPagerIndex);
mViewPagerIndex++;
} else {
addView(decor.contentView);
}
layoutDecors(mViewPager.getCurrentItem(), 0);
}
private void init() {
if (SparkleMotionCompat.hasPresenter(mViewPager)) {
mPresenter = SparkleMotionCompat.getAnimationPresenter(mViewPager);
} else {
mPresenter = new SparkleAnimationPresenter();
}
mAnimations = new ArrayList<Animation>();
}
