Santiago Etchebehere | 1ee76a2 | 2018-05-15 15:02:24 -0700 | [diff] [blame] | 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 | package com.android.wallpaper.module; |
| 17 | |
| 18 | import android.content.Context; |
| 19 | import android.content.Intent; |
| 20 | import android.content.pm.LauncherApps; |
| 21 | import android.content.pm.PackageManager; |
| 22 | import android.os.UserHandle; |
| 23 | |
| 24 | import java.util.HashMap; |
| 25 | import java.util.Map; |
| 26 | |
| 27 | /** |
| 28 | * Default version of {@link PackageStatusNotifier} that uses {@link LauncherApps} |
| 29 | */ |
| 30 | public class DefaultPackageStatusNotifier implements PackageStatusNotifier { |
| 31 | |
| 32 | private final Map<Listener, ListenerWrapper> mListeners = new HashMap<>(); |
| 33 | private final Context mAppContext; |
| 34 | private final LauncherApps mLauncherApps; |
| 35 | |
| 36 | |
| 37 | public DefaultPackageStatusNotifier(Context context) { |
| 38 | mAppContext = context.getApplicationContext(); |
| 39 | mLauncherApps = (LauncherApps) context.getSystemService(Context.LAUNCHER_APPS_SERVICE); |
| 40 | } |
| 41 | |
| 42 | @Override |
| 43 | public void addListener(Listener listener, String action) { |
| 44 | ListenerWrapper wrapper = new ListenerWrapper(mAppContext, action, listener); |
| 45 | removeListenerAndMaybeUnregisterCallback(listener); |
| 46 | mListeners.put(listener, wrapper); |
| 47 | mLauncherApps.registerCallback(wrapper); |
| 48 | } |
| 49 | |
| 50 | @Override |
| 51 | public void removeListener(Listener listener) { |
| 52 | removeListenerAndMaybeUnregisterCallback(listener); |
| 53 | } |
| 54 | |
| 55 | private void removeListenerAndMaybeUnregisterCallback(Listener listener) { |
| 56 | ListenerWrapper oldWrapper = mListeners.remove(listener); |
| 57 | if (oldWrapper != null) { |
| 58 | mLauncherApps.unregisterCallback(oldWrapper); |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | private static class ListenerWrapper extends LauncherApps.Callback { |
| 63 | |
| 64 | private final Context mAppContext; |
| 65 | private final Intent mIntentFilter; |
| 66 | private final Listener mListener; |
| 67 | |
| 68 | ListenerWrapper(Context context, String action, Listener listener) { |
| 69 | mAppContext = context.getApplicationContext(); |
| 70 | mIntentFilter = new Intent(action); |
| 71 | mListener = listener; |
| 72 | } |
| 73 | |
| 74 | private boolean isValidPackage(String packageName) { |
| 75 | mIntentFilter.setPackage(packageName); |
| 76 | PackageManager pm = mAppContext.getPackageManager(); |
| 77 | return !pm.queryIntentServices(mIntentFilter, 0).isEmpty() |
| 78 | || !pm.queryIntentActivities(mIntentFilter, 0).isEmpty(); |
| 79 | } |
| 80 | |
| 81 | |
| 82 | @Override |
| 83 | public void onPackageRemoved(String packageName, UserHandle userHandle) { |
| 84 | // We can't check if the removed package is "valid" for the given action, as it's not |
| 85 | // there any more, so trigger REMOVED for all cases. |
| 86 | mListener.onPackageChanged(packageName, PackageStatus.REMOVED); |
| 87 | } |
| 88 | |
| 89 | @Override |
| 90 | public void onPackageAdded(String packageName, UserHandle userHandle) { |
| 91 | if (isValidPackage(packageName)) { |
| 92 | mListener.onPackageChanged(packageName, PackageStatus.ADDED); |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | @Override |
| 97 | public void onPackageChanged(String packageName, UserHandle userHandle) { |
| 98 | if (isValidPackage(packageName)) { |
| 99 | mListener.onPackageChanged(packageName, PackageStatus.CHANGED); |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | @Override |
| 104 | public void onPackagesAvailable(String[] packageNames, UserHandle userHandle, |
| 105 | boolean replacing) { |
| 106 | for (String packageName : packageNames) { |
| 107 | if (isValidPackage(packageName)) { |
| 108 | mListener.onPackageChanged(packageName, |
| 109 | replacing ? PackageStatus.CHANGED : PackageStatus.ADDED); |
| 110 | } |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | @Override |
| 115 | public void onPackagesUnavailable(String[] packageNames, UserHandle userHandle, |
| 116 | boolean replacing) { |
| 117 | for (String packageName : packageNames) { |
| 118 | if (!replacing && isValidPackage(packageName)) { |
| 119 | mListener.onPackageChanged(packageName, PackageStatus.REMOVED); |
| 120 | } |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | @Override |
| 125 | public void onPackagesSuspended(String[] packageNames, UserHandle user) { |
| 126 | for (String packageName : packageNames) { |
| 127 | if (isValidPackage(packageName)) { |
| 128 | mListener.onPackageChanged(packageName, PackageStatus.REMOVED); |
| 129 | } |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | @Override |
| 134 | public void onPackagesUnsuspended(String[] packageNames, UserHandle user) { |
| 135 | for (String packageName : packageNames) { |
| 136 | if (isValidPackage(packageName)) { |
| 137 | mListener.onPackageChanged(packageName, PackageStatus.ADDED); |
| 138 | } |
| 139 | } |
| 140 | } |
| 141 | } |
| 142 | } |