1/* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.support.v7.view; 18 19import android.support.v4.view.ViewPropertyAnimatorCompat; 20import android.support.v4.view.ViewPropertyAnimatorListener; 21import android.support.v4.view.ViewPropertyAnimatorListenerAdapter; 22import android.view.View; 23import android.view.animation.Interpolator; 24 25import java.util.ArrayList; 26 27/** 28 * A very naive implementation of a set of 29 * {@link android.support.v4.view.ViewPropertyAnimatorCompat}. 30 * 31 * @hide 32 */ 33public class ViewPropertyAnimatorCompatSet { 34 35 private final ArrayList<ViewPropertyAnimatorCompat> mAnimators; 36 37 private long mDuration = -1; 38 private Interpolator mInterpolator; 39 private ViewPropertyAnimatorListener mListener; 40 41 private boolean mIsStarted; 42 43 public ViewPropertyAnimatorCompatSet() { 44 mAnimators = new ArrayList<ViewPropertyAnimatorCompat>(); 45 } 46 47 public ViewPropertyAnimatorCompatSet play(ViewPropertyAnimatorCompat animator) { 48 if (!mIsStarted) { 49 mAnimators.add(animator); 50 } 51 return this; 52 } 53 54 public ViewPropertyAnimatorCompatSet playSequentially(ViewPropertyAnimatorCompat anim1, 55 ViewPropertyAnimatorCompat anim2) { 56 mAnimators.add(anim1); 57 anim2.setStartDelay(anim1.getDuration()); 58 mAnimators.add(anim2); 59 return this; 60 } 61 62 public void start() { 63 if (mIsStarted) return; 64 for (ViewPropertyAnimatorCompat animator : mAnimators) { 65 if (mDuration >= 0) { 66 animator.setDuration(mDuration); 67 } 68 if (mInterpolator != null) { 69 animator.setInterpolator(mInterpolator); 70 } 71 if (mListener != null) { 72 animator.setListener(mProxyListener); 73 } 74 animator.start(); 75 } 76 77 mIsStarted = true; 78 } 79 80 private void onAnimationsEnded() { 81 mIsStarted = false; 82 } 83 84 public void cancel() { 85 if (!mIsStarted) { 86 return; 87 } 88 for (ViewPropertyAnimatorCompat animator : mAnimators) { 89 animator.cancel(); 90 } 91 mIsStarted = false; 92 } 93 94 public ViewPropertyAnimatorCompatSet setDuration(long duration) { 95 if (!mIsStarted) { 96 mDuration = duration; 97 } 98 return this; 99 } 100 101 public ViewPropertyAnimatorCompatSet setInterpolator(Interpolator interpolator) { 102 if (!mIsStarted) { 103 mInterpolator = interpolator; 104 } 105 return this; 106 } 107 108 public ViewPropertyAnimatorCompatSet setListener(ViewPropertyAnimatorListener listener) { 109 if (!mIsStarted) { 110 mListener = listener; 111 } 112 return this; 113 } 114 115 private final ViewPropertyAnimatorListenerAdapter mProxyListener 116 = new ViewPropertyAnimatorListenerAdapter() { 117 private boolean mProxyStarted = false; 118 private int mProxyEndCount = 0; 119 120 @Override 121 public void onAnimationStart(View view) { 122 if (mProxyStarted) { 123 return; 124 } 125 mProxyStarted = true; 126 if (mListener != null) { 127 mListener.onAnimationStart(null); 128 } 129 } 130 131 void onEnd() { 132 mProxyEndCount = 0; 133 mProxyStarted = false; 134 onAnimationsEnded(); 135 } 136 137 @Override 138 public void onAnimationEnd(View view) { 139 if (++mProxyEndCount == mAnimators.size()) { 140 if (mListener != null) { 141 mListener.onAnimationEnd(null); 142 } 143 onEnd(); 144 } 145 } 146 }; 147} 148