1 /*
2  * Copyright (C) 2016 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 com.android.systemui.keyguard;
18 
19 import com.android.internal.policy.IKeyguardDismissCallback;
20 import com.android.systemui.dagger.SysUISingleton;
21 import com.android.systemui.dagger.qualifiers.UiBackground;
22 
23 import java.util.ArrayList;
24 import java.util.concurrent.Executor;
25 
26 import javax.inject.Inject;
27 
28 /**
29  * Registry holding the current set of {@link IKeyguardDismissCallback}s.
30  */
31 @SysUISingleton
32 public class DismissCallbackRegistry {
33 
34     private final ArrayList<DismissCallbackWrapper> mDismissCallbacks = new ArrayList<>();
35     private final Executor mUiBgExecutor;
36 
37     @Inject
DismissCallbackRegistry(@iBackground Executor uiBgExecutor)38     public DismissCallbackRegistry(@UiBackground Executor uiBgExecutor) {
39         mUiBgExecutor = uiBgExecutor;
40     }
41 
addCallback(IKeyguardDismissCallback callback)42     public void addCallback(IKeyguardDismissCallback callback) {
43         mDismissCallbacks.add(new DismissCallbackWrapper(callback));
44     }
45 
notifyDismissCancelled()46     public void notifyDismissCancelled() {
47         for (int i = mDismissCallbacks.size() - 1; i >= 0; i--) {
48             DismissCallbackWrapper callback = mDismissCallbacks.get(i);
49             mUiBgExecutor.execute(callback::notifyDismissCancelled);
50         }
51         mDismissCallbacks.clear();
52     }
53 
notifyDismissSucceeded()54     public void notifyDismissSucceeded() {
55         for (int i = mDismissCallbacks.size() - 1; i >= 0; i--) {
56             DismissCallbackWrapper callback = mDismissCallbacks.get(i);
57             mUiBgExecutor.execute(callback::notifyDismissSucceeded);
58         }
59         mDismissCallbacks.clear();
60     }
61 }
62