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 import android.os.Build;
21 
22 import androidx.annotation.RequiresApi;
23 import androidx.annotation.RestrictTo;
24 import androidx.annotation.RestrictTo.Scope;
25 
26 /**
27  * Convenience class for listening for Animator events that implements the AnimatorListener
28  * interface and allows extending only methods that are necessary.
29  *
30  * @hide Hidden until this goes through review
31  */
32 @RequiresApi(Build.VERSION_CODES.KITKAT_WATCH)
33 @RestrictTo(Scope.LIBRARY)
34 public class SimpleAnimatorListener implements Animator.AnimatorListener {
35 
36     private boolean mWasCanceled;
37 
38     @Override
onAnimationCancel(Animator animator)39     public void onAnimationCancel(Animator animator) {
40         mWasCanceled = true;
41     }
42 
43     @Override
onAnimationEnd(Animator animator)44     public void onAnimationEnd(Animator animator) {
45         if (!mWasCanceled) {
46             onAnimationComplete(animator);
47         }
48     }
49 
50     @Override
onAnimationRepeat(Animator animator)51     public void onAnimationRepeat(Animator animator) {}
52 
53     @Override
onAnimationStart(Animator animator)54     public void onAnimationStart(Animator animator) {
55         mWasCanceled = false;
56     }
57 
58     /**
59      * Called when the animation finishes. Not called if the animation was canceled.
60      */
onAnimationComplete(Animator animator)61     public void onAnimationComplete(Animator animator) {}
62 
63     /**
64      * Provides information if the animation was cancelled.
65      *
66      * @return True if animation was cancelled.
67      */
wasCanceled()68     public boolean wasCanceled() {
69         return mWasCanceled;
70     }
71 }
72