/*
* ******************************************************************************
* Copyright (c) 2014 Gabriele Mariotti.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* *****************************************************************************
*/
package com.marshalchen.common.ui.recyclerviewitemanimator;
import android.support.v4.view.ViewCompat;
import android.support.v7.widget.RecyclerView;
import android.view.View;
/**
* @author Gabriele Mariotti (gabri.mariotti@gmail.com)
*/
public class SlideInOutTopItemAnimator extends BaseItemAnimator {
float mOriginalY;
public SlideInOutTopItemAnimator(RecyclerView recyclerView) {
super(recyclerView);
}
protected void animateRemoveImpl(final RecyclerView.ViewHolder holder) {
final View view = holder.itemView;
retrieveItemHeight(holder);
ViewCompat.animate(view).cancel();
ViewCompat.animate(view).setDuration(getRemoveDuration()).
translationY(-mOriginalY).setListener(new VpaListenerAdapter() {
@Override
public void onAnimationEnd(View view) {
ViewCompat.setTranslationY(view, -mOriginalY);
dispatchRemoveFinished(holder);
mRemoveAnimations.remove(holder);
dispatchFinishedWhenDone();
}
}).start();
mRemoveAnimations.add(holder);
}
@Override
protected void prepareAnimateAdd(RecyclerView.ViewHolder holder) {
retrieveItemHeight(holder);
ViewCompat.setTranslationY(holder.itemView, -mOriginalY);
}
protected void animateAddImpl(final RecyclerView.ViewHolder holder) {
final View view = holder.itemView;
ViewCompat.animate(view).cancel();
ViewCompat.animate(view).translationY(0)
.setDuration(getAddDuration()).
setListener(new VpaListenerAdapter() {
@Override
public void onAnimationCancel(View view) {
ViewCompat.setTranslationY(view, 0);
}
@Override
public void onAnimationEnd(View view) {
dispatchAddFinished(holder);
mAddAnimations.remove(holder);
dispatchFinishedWhenDone();
}
}).start();
mAddAnimations.add(holder);
}
private void retrieveItemHeight(final RecyclerView.ViewHolder holder){
mOriginalY = mRecyclerView.getLayoutManager().getDecoratedBottom(holder.itemView);
}
@Override
public boolean animateChange(RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder viewHolder2, int i, int i2, int i3, int i4) {
return false;
}
}