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.util;
  
  import android.content.ComponentName;
  import android.os.UserHandle;
  
  import com.android.launcher3.FolderInfo;
  import com.android.launcher3.ItemInfo;
  import com.android.launcher3.LauncherAppWidgetInfo;
  import com.android.launcher3.LauncherSettings.Favorites;
  import com.android.launcher3.WorkspaceItemInfo;
  import com.android.launcher3.shortcuts.ShortcutKey;
  
  import java.util.HashSet;
  
  /**
   * A utility class to check for {@link ItemInfo}
   */
  public interface ItemInfoMatcher {
  
      boolean matches(ItemInfo info, ComponentName cn);
  
      /**
       * Filters {@param infos} to those satisfying the {@link #matches(ItemInfo, ComponentName)}.
       */
      default HashSet<ItemInfo> filterItemInfos(Iterable<ItemInfo> infos) {
          HashSet<ItemInfo> filtered = new HashSet<>();
          for (ItemInfo i : infos) {
              if (i instanceof WorkspaceItemInfo) {
                  WorkspaceItemInfo info = (WorkspaceItemInfo) i;
                  ComponentName cn = info.getTargetComponent();
                  if (cn != null && matches(info, cn)) {
                      filtered.add(info);
                  }
              } else if (i instanceof FolderInfo) {
                  FolderInfo info = (FolderInfo) i;
                  for (WorkspaceItemInfo s : info.contents) {
                      ComponentName cn = s.getTargetComponent();
                      if (cn != null && matches(s, cn)) {
                          filtered.add(s);
                      }
                  }
              } else if (i instanceof LauncherAppWidgetInfo) {
                  LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) i;
                  ComponentName cn = info.providerName;
                  if (cn != null && matches(info, cn)) {
                      filtered.add(info);
                  }
              }
          }
          return filtered;
      }
  
      /**
       * Returns a new matcher with returns true if either this or {@param matcher} returns true.
       */
      default ItemInfoMatcher or(ItemInfoMatcher matcher) {
          return (info, cn) -> matches(info, cn) || matcher.matches(info, cn);
      }
  
      /**
       * Returns a new matcher with returns true if both this and {@param matcher} returns true.
       */
      default ItemInfoMatcher and(ItemInfoMatcher matcher) {
          return (info, cn) -> matches(info, cn) && matcher.matches(info, cn);
      }
  
      /**
       * Returns a new matcher which returns the opposite boolean value of the provided
       * {@param matcher}.
       */
      static ItemInfoMatcher not(ItemInfoMatcher matcher) {
          return (info, cn) -> !matcher.matches(info, cn);
      }
  
      static ItemInfoMatcher ofUser(UserHandle user) {
          return (info, cn) -> info.user.equals(user);
      }
  
      static ItemInfoMatcher ofComponents(HashSet<ComponentName> components, UserHandle user) {
          return (info, cn) -> components.contains(cn) && info.user.equals(user);
      }
  
      static ItemInfoMatcher ofPackages(HashSet<String> packageNames, UserHandle user) {
          return (info, cn) -> packageNames.contains(cn.getPackageName()) && info.user.equals(user);
      }
  
      static ItemInfoMatcher ofShortcutKeys(HashSet<ShortcutKey> keys) {
          return  (info, cn) -> info.itemType == Favorites.ITEM_TYPE_DEEP_SHORTCUT &&
                          keys.contains(ShortcutKey.fromItemInfo(info));
      }
  
      static ItemInfoMatcher ofItemIds(IntSparseArrayMap<Boolean> ids, Boolean matchDefault) {
          return (info, cn) -> ids.get(info.id, matchDefault);
      }
  }
  