| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.launcher3.shortcuts; |
| |
| import android.annotation.TargetApi; |
| import android.os.Build; |
| import android.os.UserHandle; |
| import android.util.LruCache; |
| |
| import java.util.HashMap; |
| import java.util.List; |
| |
| /** |
| * Loads {@link ShortcutInfoCompat}s on demand (e.g. when launcher |
| * loads for pinned shortcuts and on long-press for dynamic shortcuts), and caches them |
| * for handful of apps in an LruCache while launcher lives. |
| */ |
| @TargetApi(Build.VERSION_CODES.N) |
| public class ShortcutCache { |
| private static final String TAG = "ShortcutCache"; |
| private static final boolean LOGD = false; |
| |
| private static final int CACHE_SIZE = 30; // Max number shortcuts we cache. |
| |
| private LruCache<ShortcutKey, ShortcutInfoCompat> mCachedShortcuts; |
| // We always keep pinned shortcuts in the cache. |
| private HashMap<ShortcutKey, ShortcutInfoCompat> mPinnedShortcuts; |
| |
| public ShortcutCache() { |
| mCachedShortcuts = new LruCache<>(CACHE_SIZE); |
| mPinnedShortcuts = new HashMap<>(); |
| } |
| |
| /** |
| * Removes shortcuts from the cache when shortcuts change for a given package. |
| * |
| * Returns a map of ids to their evicted shortcuts. |
| * |
| * @see android.content.pm.LauncherApps.Callback#onShortcutsChanged(String, List, UserHandle). |
| */ |
| public void removeShortcuts(List<ShortcutInfoCompat> shortcuts) { |
| for (ShortcutInfoCompat shortcut : shortcuts) { |
| ShortcutKey key = ShortcutKey.fromInfo(shortcut); |
| mCachedShortcuts.remove(key); |
| mPinnedShortcuts.remove(key); |
| } |
| } |
| |
| public ShortcutInfoCompat get(ShortcutKey key) { |
| if (mPinnedShortcuts.containsKey(key)) { |
| return mPinnedShortcuts.get(key); |
| } |
| return mCachedShortcuts.get(key); |
| } |
| |
| public void put(ShortcutKey key, ShortcutInfoCompat shortcut) { |
| if (shortcut.isPinned()) { |
| mPinnedShortcuts.put(key, shortcut); |
| } else { |
| mCachedShortcuts.put(key, shortcut); |
| } |
| } |
| } |