CustomChangeBounds.java
/*
* Copyright 2018 The Android Open Source Project
*
* 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 androidx.leanback.transition;
import android.animation.Animator;
import android.transition.ChangeBounds;
import android.transition.TransitionValues;
import android.util.SparseIntArray;
import android.view.View;
import android.view.ViewGroup;
import androidx.annotation.RequiresApi;
import java.util.HashMap;
/**
* change bounds that support customized start delay.
*/
@RequiresApi(19)
class CustomChangeBounds extends ChangeBounds {
int mDefaultStartDelay;
// View -> delay
final HashMap<View, Integer> mViewStartDelays = new HashMap<View, Integer>();
// id -> delay
final SparseIntArray mIdStartDelays = new SparseIntArray();
// Class.getName() -> delay
final HashMap<String, Integer> mClassStartDelays = new HashMap<String, Integer>();
private int getDelay(View view) {
Integer delay = mViewStartDelays.get(view);
if (delay != null) {
return delay;
}
int idStartDelay = mIdStartDelays.get(view.getId(), -1);
if (idStartDelay != -1) {
return idStartDelay;
}
delay = mClassStartDelays.get(view.getClass().getName());
if (delay != null) {
return delay;
}
return mDefaultStartDelay;
}
@Override
public Animator createAnimator(ViewGroup sceneRoot, TransitionValues startValues,
TransitionValues endValues) {
Animator animator = super.createAnimator(sceneRoot, startValues, endValues);
if (animator != null && endValues != null && endValues.view != null) {
animator.setStartDelay(getDelay(endValues.view));
}
return animator;
}
public void setStartDelay(View view, int startDelay) {
mViewStartDelays.put(view, startDelay);
}
public void setStartDelay(int viewId, int startDelay) {
mIdStartDelays.put(viewId, startDelay);
}
public void setStartDelay(String className, int startDelay) {
mClassStartDelays.put(className, startDelay);
}
public void setDefaultStartDelay(int startDelay) {
mDefaultStartDelay = startDelay;
}
}