1 /*
2  * Copyright (C) 2017 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 
17 package androidx.wear.widget;
18 
19 import android.animation.Animator;
20 
21 import androidx.annotation.RestrictTo;
22 import androidx.annotation.RestrictTo.Scope;
23 
24 /**
25  * Convenience class for listening for Animator events that implements the AnimatorListener
26  * interface and allows extending only methods that are necessary.
27  *
28  */
29 @RestrictTo(Scope.LIBRARY)
30 public class SimpleAnimatorListener implements Animator.AnimatorListener {
31 
32     private boolean mWasCanceled;
33 
34     @Override
onAnimationCancel(Animator animator)35     public void onAnimationCancel(Animator animator) {
36         mWasCanceled = true;
37     }
38 
39     @Override
onAnimationEnd(Animator animator)40     public void onAnimationEnd(Animator animator) {
41         if (!mWasCanceled) {
42             onAnimationComplete(animator);
43         }
44     }
45 
46     @Override
onAnimationRepeat(Animator animator)47     public void onAnimationRepeat(Animator animator) {}
48 
49     @Override
onAnimationStart(Animator animator)50     public void onAnimationStart(Animator animator) {
51         mWasCanceled = false;
52     }
53 
54     /**
55      * Called when the animation finishes. Not called if the animation was canceled.
56      */
onAnimationComplete(Animator animator)57     public void onAnimationComplete(Animator animator) {}
58 
59     /**
60      * Provides information if the animation was cancelled.
61      *
62      * @return True if animation was cancelled.
63      */
wasCanceled()64     public boolean wasCanceled() {
65         return mWasCanceled;
66     }
67 }
68