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.util; 18 19 import android.content.ComponentName; 20 import android.os.UserHandle; 21 22 import com.android.launcher3.FolderInfo; 23 import com.android.launcher3.ItemInfo; 24 import com.android.launcher3.LauncherAppWidgetInfo; 25 import com.android.launcher3.LauncherSettings.Favorites; 26 import com.android.launcher3.WorkspaceItemInfo; 27 import com.android.launcher3.shortcuts.ShortcutKey; 28 29 import java.util.HashSet; 30 31 /** 32 * A utility class to check for {@link ItemInfo} 33 */ 34 public interface ItemInfoMatcher { 35 matches(ItemInfo info, ComponentName cn)36 boolean matches(ItemInfo info, ComponentName cn); 37 38 /** 39 * Filters {@param infos} to those satisfying the {@link #matches(ItemInfo, ComponentName)}. 40 */ filterItemInfos(Iterable<ItemInfo> infos)41 default HashSet<ItemInfo> filterItemInfos(Iterable<ItemInfo> infos) { 42 HashSet<ItemInfo> filtered = new HashSet<>(); 43 for (ItemInfo i : infos) { 44 if (i instanceof WorkspaceItemInfo) { 45 WorkspaceItemInfo info = (WorkspaceItemInfo) i; 46 ComponentName cn = info.getTargetComponent(); 47 if (cn != null && matches(info, cn)) { 48 filtered.add(info); 49 } 50 } else if (i instanceof FolderInfo) { 51 FolderInfo info = (FolderInfo) i; 52 for (WorkspaceItemInfo s : info.contents) { 53 ComponentName cn = s.getTargetComponent(); 54 if (cn != null && matches(s, cn)) { 55 filtered.add(s); 56 } 57 } 58 } else if (i instanceof LauncherAppWidgetInfo) { 59 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) i; 60 ComponentName cn = info.providerName; 61 if (cn != null && matches(info, cn)) { 62 filtered.add(info); 63 } 64 } 65 } 66 return filtered; 67 } 68 69 /** 70 * Returns a new matcher with returns true if either this or {@param matcher} returns true. 71 */ or(ItemInfoMatcher matcher)72 default ItemInfoMatcher or(ItemInfoMatcher matcher) { 73 return (info, cn) -> matches(info, cn) || matcher.matches(info, cn); 74 } 75 76 /** 77 * Returns a new matcher with returns true if both this and {@param matcher} returns true. 78 */ and(ItemInfoMatcher matcher)79 default ItemInfoMatcher and(ItemInfoMatcher matcher) { 80 return (info, cn) -> matches(info, cn) && matcher.matches(info, cn); 81 } 82 83 /** 84 * Returns a new matcher which returns the opposite boolean value of the provided 85 * {@param matcher}. 86 */ not(ItemInfoMatcher matcher)87 static ItemInfoMatcher not(ItemInfoMatcher matcher) { 88 return (info, cn) -> !matcher.matches(info, cn); 89 } 90 ofUser(UserHandle user)91 static ItemInfoMatcher ofUser(UserHandle user) { 92 return (info, cn) -> info.user.equals(user); 93 } 94 ofComponents(HashSet<ComponentName> components, UserHandle user)95 static ItemInfoMatcher ofComponents(HashSet<ComponentName> components, UserHandle user) { 96 return (info, cn) -> components.contains(cn) && info.user.equals(user); 97 } 98 ofPackages(HashSet<String> packageNames, UserHandle user)99 static ItemInfoMatcher ofPackages(HashSet<String> packageNames, UserHandle user) { 100 return (info, cn) -> packageNames.contains(cn.getPackageName()) && info.user.equals(user); 101 } 102 ofShortcutKeys(HashSet<ShortcutKey> keys)103 static ItemInfoMatcher ofShortcutKeys(HashSet<ShortcutKey> keys) { 104 return (info, cn) -> info.itemType == Favorites.ITEM_TYPE_DEEP_SHORTCUT && 105 keys.contains(ShortcutKey.fromItemInfo(info)); 106 } 107 ofItemIds(IntSparseArrayMap<Boolean> ids, Boolean matchDefault)108 static ItemInfoMatcher ofItemIds(IntSparseArrayMap<Boolean> ids, Boolean matchDefault) { 109 return (info, cn) -> ids.get(info.id, matchDefault); 110 } 111 } 112