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      1 /*
      2  * Copyright (C) 2017 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.popup;
     18 
     19 import android.content.ComponentName;
     20 import android.content.Context;
     21 import android.os.Handler;
     22 import android.os.UserHandle;
     23 import android.service.notification.StatusBarNotification;
     24 import android.support.annotation.NonNull;
     25 import android.support.annotation.Nullable;
     26 import android.support.annotation.VisibleForTesting;
     27 import android.view.View;
     28 import android.widget.ImageView;
     29 
     30 import com.android.launcher3.ItemInfo;
     31 import com.android.launcher3.Launcher;
     32 import com.android.launcher3.R;
     33 import com.android.launcher3.ShortcutInfo;
     34 import com.android.launcher3.graphics.LauncherIcons;
     35 import com.android.launcher3.notification.NotificationInfo;
     36 import com.android.launcher3.notification.NotificationItemView;
     37 import com.android.launcher3.notification.NotificationKeyData;
     38 import com.android.launcher3.shortcuts.DeepShortcutManager;
     39 import com.android.launcher3.shortcuts.DeepShortcutView;
     40 import com.android.launcher3.shortcuts.ShortcutInfoCompat;
     41 import com.android.launcher3.util.PackageUserKey;
     42 
     43 import java.util.ArrayList;
     44 import java.util.Collections;
     45 import java.util.Comparator;
     46 import java.util.Iterator;
     47 import java.util.List;
     48 
     49 /**
     50  * Contains logic relevant to populating a {@link PopupContainerWithArrow}. In particular,
     51  * this class determines which items appear in the container, and in what order.
     52  */
     53 public class PopupPopulator {
     54 
     55     public static final int MAX_ITEMS = 4;
     56     @VisibleForTesting static final int NUM_DYNAMIC = 2;
     57     private static final int MAX_SHORTCUTS_IF_NOTIFICATIONS = 2;
     58 
     59     public enum Item {
     60         SHORTCUT(R.layout.deep_shortcut, true),
     61         NOTIFICATION(R.layout.notification, false),
     62         SYSTEM_SHORTCUT(R.layout.system_shortcut, true),
     63         SYSTEM_SHORTCUT_ICON(R.layout.system_shortcut_icon_only, true);
     64 
     65         public final int layoutId;
     66         public final boolean isShortcut;
     67 
     68         Item(int layoutId, boolean isShortcut) {
     69             this.layoutId = layoutId;
     70             this.isShortcut = isShortcut;
     71         }
     72     }
     73 
     74     public static @NonNull Item[] getItemsToPopulate(@NonNull List<String> shortcutIds,
     75             @NonNull List<NotificationKeyData> notificationKeys,
     76             @NonNull List<SystemShortcut> systemShortcuts) {
     77         boolean hasNotifications = notificationKeys.size() > 0;
     78         int numNotificationItems = hasNotifications ? 1 : 0;
     79         int numShortcuts = shortcutIds.size();
     80         if (hasNotifications && numShortcuts > MAX_SHORTCUTS_IF_NOTIFICATIONS) {
     81             numShortcuts = MAX_SHORTCUTS_IF_NOTIFICATIONS;
     82         }
     83         int numItems = Math.min(MAX_ITEMS, numShortcuts + numNotificationItems)
     84                 + systemShortcuts.size();
     85         Item[] items = new Item[numItems];
     86         for (int i = 0; i < numItems; i++) {
     87             items[i] = Item.SHORTCUT;
     88         }
     89         if (hasNotifications) {
     90             // The notification layout is always first.
     91             items[0] = Item.NOTIFICATION;
     92         }
     93         // The system shortcuts are always last.
     94         boolean iconsOnly = !shortcutIds.isEmpty();
     95         for (int i = 0; i < systemShortcuts.size(); i++) {
     96             items[numItems - 1 - i] = iconsOnly ? Item.SYSTEM_SHORTCUT_ICON : Item.SYSTEM_SHORTCUT;
     97         }
     98         return items;
     99     }
    100 
    101     public static Item[] reverseItems(Item[] items) {
    102         if (items == null) return null;
    103         int numItems = items.length;
    104         Item[] reversedArray = new Item[numItems];
    105         for (int i = 0; i < numItems; i++) {
    106             reversedArray[i] = items[numItems - i - 1];
    107         }
    108         return reversedArray;
    109     }
    110 
    111     /**
    112      * Sorts shortcuts in rank order, with manifest shortcuts coming before dynamic shortcuts.
    113      */
    114     private static final Comparator<ShortcutInfoCompat> SHORTCUT_RANK_COMPARATOR
    115             = new Comparator<ShortcutInfoCompat>() {
    116         @Override
    117         public int compare(ShortcutInfoCompat a, ShortcutInfoCompat b) {
    118             if (a.isDeclaredInManifest() && !b.isDeclaredInManifest()) {
    119                 return -1;
    120             }
    121             if (!a.isDeclaredInManifest() && b.isDeclaredInManifest()) {
    122                 return 1;
    123             }
    124             return Integer.compare(a.getRank(), b.getRank());
    125         }
    126     };
    127 
    128     /**
    129      * Filters the shortcuts so that only MAX_ITEMS or fewer shortcuts are retained.
    130      * We want the filter to include both static and dynamic shortcuts, so we always
    131      * include NUM_DYNAMIC dynamic shortcuts, if at least that many are present.
    132      *
    133      * @param shortcutIdToRemoveFirst An id that should be filtered out first, if any.
    134      * @return a subset of shortcuts, in sorted order, with size <= MAX_ITEMS.
    135      */
    136     public static List<ShortcutInfoCompat> sortAndFilterShortcuts(
    137             List<ShortcutInfoCompat> shortcuts, @Nullable String shortcutIdToRemoveFirst) {
    138         // Remove up to one specific shortcut before sorting and doing somewhat fancy filtering.
    139         if (shortcutIdToRemoveFirst != null) {
    140             Iterator<ShortcutInfoCompat> shortcutIterator = shortcuts.iterator();
    141             while (shortcutIterator.hasNext()) {
    142                 if (shortcutIterator.next().getId().equals(shortcutIdToRemoveFirst)) {
    143                     shortcutIterator.remove();
    144                     break;
    145                 }
    146             }
    147         }
    148 
    149         Collections.sort(shortcuts, SHORTCUT_RANK_COMPARATOR);
    150         if (shortcuts.size() <= MAX_ITEMS) {
    151             return shortcuts;
    152         }
    153 
    154         // The list of shortcuts is now sorted with static shortcuts followed by dynamic
    155         // shortcuts. We want to preserve this order, but only keep MAX_ITEMS.
    156         List<ShortcutInfoCompat> filteredShortcuts = new ArrayList<>(MAX_ITEMS);
    157         int numDynamic = 0;
    158         int size = shortcuts.size();
    159         for (int i = 0; i < size; i++) {
    160             ShortcutInfoCompat shortcut = shortcuts.get(i);
    161             int filteredSize = filteredShortcuts.size();
    162             if (filteredSize < MAX_ITEMS) {
    163                 // Always add the first MAX_ITEMS to the filtered list.
    164                 filteredShortcuts.add(shortcut);
    165                 if (shortcut.isDynamic()) {
    166                     numDynamic++;
    167                 }
    168                 continue;
    169             }
    170             // At this point, we have MAX_ITEMS already, but they may all be static.
    171             // If there are dynamic shortcuts, remove static shortcuts to add them.
    172             if (shortcut.isDynamic() && numDynamic < NUM_DYNAMIC) {
    173                 numDynamic++;
    174                 int lastStaticIndex = filteredSize - numDynamic;
    175                 filteredShortcuts.remove(lastStaticIndex);
    176                 filteredShortcuts.add(shortcut);
    177             }
    178         }
    179         return filteredShortcuts;
    180     }
    181 
    182     public static Runnable createUpdateRunnable(final Launcher launcher, final ItemInfo originalInfo,
    183             final Handler uiHandler, final PopupContainerWithArrow container,
    184             final List<String> shortcutIds, final List<DeepShortcutView> shortcutViews,
    185             final List<NotificationKeyData> notificationKeys,
    186             final NotificationItemView notificationView, final List<SystemShortcut> systemShortcuts,
    187             final List<View> systemShortcutViews) {
    188         final ComponentName activity = originalInfo.getTargetComponent();
    189         final UserHandle user = originalInfo.user;
    190         return new Runnable() {
    191             @Override
    192             public void run() {
    193                 if (notificationView != null) {
    194                     List<StatusBarNotification> notifications = launcher.getPopupDataProvider()
    195                             .getStatusBarNotificationsForKeys(notificationKeys);
    196                     List<NotificationInfo> infos = new ArrayList<>(notifications.size());
    197                     for (int i = 0; i < notifications.size(); i++) {
    198                         StatusBarNotification notification = notifications.get(i);
    199                         infos.add(new NotificationInfo(launcher, notification));
    200                     }
    201                     uiHandler.post(new UpdateNotificationChild(notificationView, infos));
    202                 }
    203 
    204                 List<ShortcutInfoCompat> shortcuts = DeepShortcutManager.getInstance(launcher)
    205                         .queryForShortcutsContainer(activity, shortcutIds, user);
    206                 String shortcutIdToDeDupe = notificationKeys.isEmpty() ? null
    207                         : notificationKeys.get(0).shortcutId;
    208                 shortcuts = PopupPopulator.sortAndFilterShortcuts(shortcuts, shortcutIdToDeDupe);
    209                 for (int i = 0; i < shortcuts.size() && i < shortcutViews.size(); i++) {
    210                     final ShortcutInfoCompat shortcut = shortcuts.get(i);
    211                     ShortcutInfo si = new ShortcutInfo(shortcut, launcher);
    212                     // Use unbadged icon for the menu.
    213                     si.iconBitmap = LauncherIcons.createShortcutIcon(
    214                             shortcut, launcher, false /* badged */);
    215                     si.rank = i;
    216                     uiHandler.post(new UpdateShortcutChild(container, shortcutViews.get(i),
    217                             si, shortcut));
    218                 }
    219 
    220                 // This ensures that mLauncher.getWidgetsForPackageUser()
    221                 // doesn't return null (it puts all the widgets in memory).
    222                 for (int i = 0; i < systemShortcuts.size(); i++) {
    223                     final SystemShortcut systemShortcut = systemShortcuts.get(i);
    224                     uiHandler.post(new UpdateSystemShortcutChild(container,
    225                             systemShortcutViews.get(i), systemShortcut, launcher, originalInfo));
    226                 }
    227                 uiHandler.post(new Runnable() {
    228                     @Override
    229                     public void run() {
    230                         launcher.refreshAndBindWidgetsForPackageUser(
    231                                 PackageUserKey.fromItemInfo(originalInfo));
    232                     }
    233                 });
    234             }
    235         };
    236     }
    237 
    238     /** Updates the shortcut child of this container based on the given shortcut info. */
    239     private static class UpdateShortcutChild implements Runnable {
    240         private final PopupContainerWithArrow mContainer;
    241         private final DeepShortcutView mShortcutChild;
    242         private final ShortcutInfo mShortcutChildInfo;
    243         private final ShortcutInfoCompat mDetail;
    244 
    245         public UpdateShortcutChild(PopupContainerWithArrow container, DeepShortcutView shortcutChild,
    246                 ShortcutInfo shortcutChildInfo, ShortcutInfoCompat detail) {
    247             mContainer = container;
    248             mShortcutChild = shortcutChild;
    249             mShortcutChildInfo = shortcutChildInfo;
    250             mDetail = detail;
    251         }
    252 
    253         @Override
    254         public void run() {
    255             mShortcutChild.applyShortcutInfo(mShortcutChildInfo, mDetail,
    256                     mContainer.mShortcutsItemView);
    257         }
    258     }
    259 
    260     /** Updates the notification child based on the given notification info. */
    261     private static class UpdateNotificationChild implements Runnable {
    262         private NotificationItemView mNotificationView;
    263         private List<NotificationInfo> mNotificationInfos;
    264 
    265         public UpdateNotificationChild(NotificationItemView notificationView,
    266                 List<NotificationInfo> notificationInfos) {
    267             mNotificationView = notificationView;
    268             mNotificationInfos = notificationInfos;
    269         }
    270 
    271         @Override
    272         public void run() {
    273             mNotificationView.applyNotificationInfos(mNotificationInfos);
    274         }
    275     }
    276 
    277     /** Updates the system shortcut child based on the given shortcut info. */
    278     private static class UpdateSystemShortcutChild implements Runnable {
    279 
    280         private final PopupContainerWithArrow mContainer;
    281         private final View mSystemShortcutChild;
    282         private final SystemShortcut mSystemShortcutInfo;
    283         private final Launcher mLauncher;
    284         private final ItemInfo mItemInfo;
    285 
    286         public UpdateSystemShortcutChild(PopupContainerWithArrow container, View systemShortcutChild,
    287                 SystemShortcut systemShortcut, Launcher launcher, ItemInfo originalInfo) {
    288             mContainer = container;
    289             mSystemShortcutChild = systemShortcutChild;
    290             mSystemShortcutInfo = systemShortcut;
    291             mLauncher = launcher;
    292             mItemInfo = originalInfo;
    293         }
    294 
    295         @Override
    296         public void run() {
    297             final Context context = mSystemShortcutChild.getContext();
    298             initializeSystemShortcut(context, mSystemShortcutChild, mSystemShortcutInfo);
    299             mSystemShortcutChild.setOnClickListener(mSystemShortcutInfo
    300                     .getOnClickListener(mLauncher, mItemInfo));
    301         }
    302     }
    303 
    304     public static void initializeSystemShortcut(Context context, View view, SystemShortcut info) {
    305         if (view instanceof DeepShortcutView) {
    306             // Expanded system shortcut, with both icon and text shown on white background.
    307             final DeepShortcutView shortcutView = (DeepShortcutView) view;
    308             shortcutView.getIconView().setBackground(info.getIcon(context,
    309                     android.R.attr.textColorTertiary));
    310             shortcutView.getBubbleText().setText(info.getLabel(context));
    311         } else if (view instanceof ImageView) {
    312             // Only the system shortcut icon shows on a gray background header.
    313             final ImageView shortcutIcon = (ImageView) view;
    314             shortcutIcon.setImageDrawable(info.getIcon(context,
    315                     android.R.attr.textColorHint));
    316             shortcutIcon.setContentDescription(info.getLabel(context));
    317         }
    318         view.setTag(info);
    319     }
    320 }
    321