1/*
2 * Copyright (C) 2018 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 com.android.server.am;
18
19import android.annotation.Nullable;
20import android.app.ActivityOptions;
21import android.os.Handler;
22import android.util.ArrayMap;
23import android.view.RemoteAnimationAdapter;
24
25/**
26 * Registry to keep track of remote animations to be run for activity starts from a certain package.
27 *
28 * @see ActivityManagerService#registerRemoteAnimationForNextActivityStart
29 */
30class PendingRemoteAnimationRegistry {
31
32    private static final long TIMEOUT_MS = 3000;
33
34    private final ArrayMap<String, Entry> mEntries = new ArrayMap<>();
35    private final Handler mHandler;
36    private final ActivityManagerService mService;
37
38    PendingRemoteAnimationRegistry(ActivityManagerService service, Handler handler) {
39        mService = service;
40        mHandler = handler;
41    }
42
43    /**
44     * Adds a remote animation to be run for all activity starts originating from a certain package.
45     */
46    void addPendingAnimation(String packageName, RemoteAnimationAdapter adapter) {
47        mEntries.put(packageName, new Entry(packageName, adapter));
48    }
49
50    /**
51     * Overrides the activity options with a registered remote animation for a certain calling
52     * package if such a remote animation is registered.
53     */
54    ActivityOptions overrideOptionsIfNeeded(String callingPackage,
55            @Nullable ActivityOptions options) {
56        final Entry entry = mEntries.get(callingPackage);
57        if (entry == null) {
58            return options;
59        }
60        if (options == null) {
61            options = ActivityOptions.makeRemoteAnimation(entry.adapter);
62        } else {
63            options.setRemoteAnimationAdapter(entry.adapter);
64        }
65        mEntries.remove(callingPackage);
66        return options;
67    }
68
69    private class Entry {
70        final String packageName;
71        final RemoteAnimationAdapter adapter;
72
73        Entry(String packageName, RemoteAnimationAdapter adapter) {
74            this.packageName = packageName;
75            this.adapter = adapter;
76            mHandler.postDelayed(() -> {
77                synchronized (mService) {
78                    final Entry entry = mEntries.get(packageName);
79                    if (entry == this) {
80                        mEntries.remove(packageName);
81                    }
82                }
83            }, TIMEOUT_MS);
84        }
85    }
86}
87