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.launcher3.shortcuts; 18 19 import android.annotation.TargetApi; 20 import android.os.Build; 21 import android.os.UserHandle; 22 import android.util.ArrayMap; 23 import android.util.LruCache; 24 import java.util.List; 25 26 /** 27 * Loads {@link ShortcutInfoCompat}s on demand (e.g. when launcher 28 * loads for pinned shortcuts and on long-press for dynamic shortcuts), and caches them 29 * for handful of apps in an LruCache while launcher lives. 30 */ 31 @TargetApi(Build.VERSION_CODES.N) 32 public class ShortcutCache { 33 private static final int CACHE_SIZE = 30; // Max number shortcuts we cache. 34 35 private final LruCache<ShortcutKey, ShortcutInfoCompat> mCachedShortcuts; 36 // We always keep pinned shortcuts in the cache. 37 private final ArrayMap<ShortcutKey, ShortcutInfoCompat> mPinnedShortcuts; 38 39 public ShortcutCache() { 40 mCachedShortcuts = new LruCache<>(CACHE_SIZE); 41 mPinnedShortcuts = new ArrayMap<>(); 42 } 43 44 /** 45 * Removes shortcuts from the cache when shortcuts change for a given package. 46 * 47 * Returns a map of ids to their evicted shortcuts. 48 * 49 * @see android.content.pm.LauncherApps.Callback#onShortcutsChanged(String, List, UserHandle). 50 */ 51 public void removeShortcuts(List<ShortcutInfoCompat> shortcuts) { 52 for (ShortcutInfoCompat shortcut : shortcuts) { 53 ShortcutKey key = ShortcutKey.fromInfo(shortcut); 54 mCachedShortcuts.remove(key); 55 mPinnedShortcuts.remove(key); 56 } 57 } 58 59 public ShortcutInfoCompat get(ShortcutKey key) { 60 if (mPinnedShortcuts.containsKey(key)) { 61 return mPinnedShortcuts.get(key); 62 } 63 return mCachedShortcuts.get(key); 64 } 65 66 public void put(ShortcutKey key, ShortcutInfoCompat shortcut) { 67 if (shortcut.isPinned()) { 68 mPinnedShortcuts.put(key, shortcut); 69 } else { 70 mCachedShortcuts.put(key, shortcut); 71 } 72 } 73 } 74
