content: /*
   * 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.ArrayMap;
  import android.util.LruCache;
  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 int CACHE_SIZE = 30; // Max number shortcuts we cache.
  
      private final LruCache<ShortcutKey, ShortcutInfoCompat> mCachedShortcuts;
      // We always keep pinned shortcuts in the cache.
      private final ArrayMap<ShortcutKey, ShortcutInfoCompat> mPinnedShortcuts;
  
      public ShortcutCache() {
          mCachedShortcuts = new LruCache<>(CACHE_SIZE);
          mPinnedShortcuts = new ArrayMap<>();
      }
  
      /**
       * 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);
          }
      }
  }
  