src/com/android/launcher3/model/BgDataModel.java - LeafOS-Project/android_packages_apps_Launcher3 - Gitiles

 /*
  * 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.model;

 import static android.content.pm.LauncherApps.ShortcutQuery.FLAG_GET_KEY_FIELDS_ONLY;

 import static com.android.launcher3.model.WidgetsModel.GO_DISABLE_WIDGETS;
 import static com.android.launcher3.shortcuts.ShortcutRequest.PINNED;

 import static java.util.stream.Collectors.groupingBy;
 import static java.util.stream.Collectors.mapping;

 import android.content.Context;
 import android.content.pm.LauncherApps;
 import android.content.pm.ShortcutInfo;
 import android.os.UserHandle;
 import android.text.TextUtils;
 import android.util.ArraySet;
 import android.util.Log;

 import com.android.launcher3.LauncherSettings;
 import com.android.launcher3.LauncherSettings.Favorites;
 import com.android.launcher3.Workspace;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.model.data.AppInfo;
 import com.android.launcher3.model.data.FolderInfo;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.model.data.LauncherAppWidgetInfo;
 import com.android.launcher3.model.data.WorkspaceItemInfo;
 import com.android.launcher3.pm.UserCache;
 import com.android.launcher3.shortcuts.ShortcutKey;
 import com.android.launcher3.shortcuts.ShortcutRequest;
 import com.android.launcher3.shortcuts.ShortcutRequest.QueryResult;
 import com.android.launcher3.util.ComponentKey;
 import com.android.launcher3.util.IntArray;
 import com.android.launcher3.util.IntSet;
 import com.android.launcher3.util.IntSparseArrayMap;
 import com.android.launcher3.util.ItemInfoMatcher;
 import com.android.launcher3.util.ViewOnDrawExecutor;
 import com.android.launcher3.widget.model.WidgetsListBaseEntry;

 import java.io.FileDescriptor;
 import java.io.PrintWriter;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.function.Consumer;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;

 /**
  * All the data stored in-memory and managed by the LauncherModel
  */
 public class BgDataModel {

     private static final String TAG = "BgDataModel";

     /**
      * Map of all the ItemInfos (shortcuts, folders, and widgets) created by
      * LauncherModel to their ids
      */
     public final IntSparseArrayMap<ItemInfo> itemsIdMap = new IntSparseArrayMap<>();

     /**
      * List of all the folders and shortcuts directly on the home screen (no widgets
      * or shortcuts within folders).
      */
     public final ArrayList<ItemInfo> workspaceItems = new ArrayList<>();

     /**
      * All LauncherAppWidgetInfo created by LauncherModel.
      */
     public final ArrayList<LauncherAppWidgetInfo> appWidgets = new ArrayList<>();

     /**
      * Map of id to FolderInfos of all the folders created by LauncherModel
      */
     public final IntSparseArrayMap<FolderInfo> folders = new IntSparseArrayMap<>();

     /**
      * Extra container based items
      */
     public final IntSparseArrayMap<FixedContainerItems> extraItems = new IntSparseArrayMap<>();

     /**
      * Maps all launcher activities to counts of their shortcuts.
      */
     public final HashMap<ComponentKey, Integer> deepShortcutMap = new HashMap<>();

     /**
      * Entire list of widgets.
      */
     public final WidgetsModel widgetsModel = new WidgetsModel();

     /**
      * Id when the model was last bound
      */
     public int lastBindId = 0;

     /**
      * Clears all the data
      */
     public synchronized void clear() {
         workspaceItems.clear();
         appWidgets.clear();
         folders.clear();
         itemsIdMap.clear();
         deepShortcutMap.clear();
         extraItems.clear();
     }

     /**
      * Creates an array of valid workspace screens based on current items in the model.
      */
     public synchronized IntArray collectWorkspaceScreens() {
         IntSet screenSet = new IntSet();
         for (ItemInfo item: itemsIdMap) {
             if (item.container == LauncherSettings.Favorites.CONTAINER_DESKTOP) {
                 screenSet.add(item.screenId);
             }
         }
         if (FeatureFlags.QSB_ON_FIRST_SCREEN || screenSet.isEmpty()) {
             screenSet.add(Workspace.FIRST_SCREEN_ID);
         }
         return screenSet.getArray();
     }

     public synchronized void dump(String prefix, FileDescriptor fd, PrintWriter writer,
             String[] args) {
         writer.println(prefix + "Data Model:");
         writer.println(prefix + " ---- workspace items ");
         for (int i = 0; i < workspaceItems.size(); i++) {
             writer.println(prefix + '\t' + workspaceItems.get(i).toString());
         }
         writer.println(prefix + " ---- appwidget items ");
         for (int i = 0; i < appWidgets.size(); i++) {
             writer.println(prefix + '\t' + appWidgets.get(i).toString());
         }
         writer.println(prefix + " ---- folder items ");
         for (int i = 0; i< folders.size(); i++) {
             writer.println(prefix + '\t' + folders.valueAt(i).toString());
         }
         writer.println(prefix + " ---- items id map ");
         for (int i = 0; i< itemsIdMap.size(); i++) {
             writer.println(prefix + '\t' + itemsIdMap.valueAt(i).toString());
         }

         if (args.length > 0 && TextUtils.equals(args[0], "--all")) {
             writer.println(prefix + "shortcut counts ");
             for (Integer count : deepShortcutMap.values()) {
                 writer.print(count + ", ");
             }
             writer.println();
         }
     }

     public synchronized void removeItem(Context context, ItemInfo... items) {
         removeItem(context, Arrays.asList(items));
     }

     public synchronized void removeItem(Context context, Iterable<? extends ItemInfo> items) {
         ArraySet<UserHandle> updatedDeepShortcuts = new ArraySet<>();
         for (ItemInfo item : items) {
             switch (item.itemType) {
                 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER:
                     folders.remove(item.id);
                     if (FeatureFlags.IS_STUDIO_BUILD) {
                         for (ItemInfo info : itemsIdMap) {
                             if (info.container == item.id) {
                                 // We are deleting a folder which still contains items that
                                 // think they are contained by that folder.
                                 String msg = "deleting a folder (" + item + ") which still " +
                                         "contains items (" + info + ")";
                                 Log.e(TAG, msg);
                             }
                         }
                     }
                     workspaceItems.remove(item);
                     break;
                 case LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT: {
                     updatedDeepShortcuts.add(item.user);
                     // Fall through.
                 }
                 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION:
                 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
                     workspaceItems.remove(item);
                     break;
                 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET:
                 case LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET:
                     appWidgets.remove(item);
                     break;
             }
             itemsIdMap.remove(item.id);
         }
         updatedDeepShortcuts.forEach(user -> updateShortcutPinnedState(context, user));
     }

     public synchronized void addItem(Context context, ItemInfo item, boolean newItem) {
         itemsIdMap.put(item.id, item);
         switch (item.itemType) {
             case LauncherSettings.Favorites.ITEM_TYPE_FOLDER:
                 folders.put(item.id, (FolderInfo) item);
                 workspaceItems.add(item);
                 break;
             case LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT:
             case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION:
             case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
                 if (item.container == LauncherSettings.Favorites.CONTAINER_DESKTOP ||
                         item.container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) {
                     workspaceItems.add(item);
                 } else {
                     if (newItem) {
                         if (!folders.containsKey(item.container)) {
                             // Adding an item to a folder that doesn't exist.
                             String msg = "adding item: " + item + " to a folder that " +
                                     " doesn't exist";
                             Log.e(TAG, msg);
                         }
                     } else {
                         findOrMakeFolder(item.container).add((WorkspaceItemInfo) item, false);
                     }

                 }
                 break;
             case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET:
             case LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET:
                 appWidgets.add((LauncherAppWidgetInfo) item);
                 break;
         }
         if (newItem && item.itemType == LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT) {
             updateShortcutPinnedState(context, item.user);
         }
     }

     /**
      * Updates the deep shortucts state in system to match out internal model, pinning any missing
      * shortcuts and unpinning any extra shortcuts.
      */
     public void updateShortcutPinnedState(Context context) {
         for (UserHandle user : UserCache.INSTANCE.get(context).getUserProfiles()) {
             updateShortcutPinnedState(context, user);
         }
     }

     /**
      * Updates the deep shortucts state in system to match out internal model, pinning any missing
      * shortcuts and unpinning any extra shortcuts.
      */
     public synchronized void updateShortcutPinnedState(Context context, UserHandle user) {
         if (GO_DISABLE_WIDGETS) {
             return;
         }

         // Collect all system shortcuts
         QueryResult result = new ShortcutRequest(context, user)
                 .query(PINNED | FLAG_GET_KEY_FIELDS_ONLY);
         if (!result.wasSuccess()) {
             return;
         }
         // Map of packageName to shortcutIds that are currently in the system
         Map<String, Set<String>> systemMap = result.stream()
                 .collect(groupingBy(ShortcutInfo::getPackage,
                         mapping(ShortcutInfo::getId, Collectors.toSet())));

         // Collect all model shortcuts
         Stream.Builder<WorkspaceItemInfo> itemStream = Stream.builder();
         forAllWorkspaceItemInfos(user, itemStream::accept);
         // Map of packageName to shortcutIds that are currently in our model
         Map<String, Set<String>> modelMap = Stream.concat(
                     // Model shortcuts
                     itemStream.build()
                         .filter(wi -> wi.itemType == Favorites.ITEM_TYPE_DEEP_SHORTCUT)
                         .map(ShortcutKey::fromItemInfo),
                     // Pending shortcuts
                     ItemInstallQueue.INSTANCE.get(context).getPendingShortcuts(user))
                 .collect(groupingBy(ShortcutKey::getPackageName,
                         mapping(ShortcutKey::getId, Collectors.toSet())));

         // Check for diff
         for (Map.Entry<String, Set<String>> entry : modelMap.entrySet()) {
             Set<String> modelShortcuts = entry.getValue();
             Set<String> systemShortcuts = systemMap.remove(entry.getKey());
             if (systemShortcuts == null) {
                 systemShortcuts = Collections.emptySet();
             }

             // Do not use .equals as it can vary based on the type of set
             if (systemShortcuts.size() != modelShortcuts.size()
                     || !systemShortcuts.containsAll(modelShortcuts)) {
                 // Update system state for this package
                 try {
                     context.getSystemService(LauncherApps.class).pinShortcuts(
                             entry.getKey(), new ArrayList<>(modelShortcuts), user);
                 } catch (SecurityException | IllegalStateException e) {
                     Log.w(TAG, "Failed to pin shortcut", e);
                 }
             }
         }

         // If there are any extra pinned shortcuts, remove them
         systemMap.keySet().forEach(packageName -> {
             // Update system state
             try {
                 context.getSystemService(LauncherApps.class).pinShortcuts(
                         packageName, Collections.emptyList(), user);
             } catch (SecurityException | IllegalStateException e) {
                 Log.w(TAG, "Failed to unpin shortcut", e);
             }
         });
     }

     /**
      * Return an existing FolderInfo object if we have encountered this ID previously,
      * or make a new one.
      */
     public synchronized FolderInfo findOrMakeFolder(int id) {
         // See if a placeholder was created for us already
         FolderInfo folderInfo = folders.get(id);
         if (folderInfo == null) {
             // No placeholder -- create a new instance
             folderInfo = new FolderInfo();
             folders.put(id, folderInfo);
         }
         return folderInfo;
     }

     /**
      * Clear all the deep shortcut counts for the given package, and re-add the new shortcut counts.
      */
     public synchronized void updateDeepShortcutCounts(
             String packageName, UserHandle user, List<ShortcutInfo> shortcuts) {
         if (packageName != null) {
             Iterator<ComponentKey> keysIter = deepShortcutMap.keySet().iterator();
             while (keysIter.hasNext()) {
                 ComponentKey next = keysIter.next();
                 if (next.componentName.getPackageName().equals(packageName)
                         && next.user.equals(user)) {
                     keysIter.remove();
                 }
             }
         }

         // Now add the new shortcuts to the map.
         for (ShortcutInfo shortcut : shortcuts) {
             boolean shouldShowInContainer = shortcut.isEnabled()
                     && (shortcut.isDeclaredInManifest() || shortcut.isDynamic())
                     && shortcut.getActivity() != null;
             if (shouldShowInContainer) {
                 ComponentKey targetComponent
                         = new ComponentKey(shortcut.getActivity(), shortcut.getUserHandle());

                 Integer previousCount = deepShortcutMap.get(targetComponent);
                 deepShortcutMap.put(targetComponent, previousCount == null ? 1 : previousCount + 1);
             }
         }
     }

     /**
      * Returns a list containing all workspace items including widgets.
      */
     public synchronized ArrayList<ItemInfo> getAllWorkspaceItems() {
         ArrayList<ItemInfo> items = new ArrayList<>(workspaceItems.size() + appWidgets.size());
         items.addAll(workspaceItems);
         items.addAll(appWidgets);
         return items;
     }

     /**
      * Calls the provided {@code op} for all workspaceItems in the in-memory model (both persisted
      * items and dynamic/predicted items for the provided {@code userHandle}.
      * Note the call is not synchronized over the model, that should be handled by the called.
      */
     public void forAllWorkspaceItemInfos(UserHandle userHandle, Consumer<WorkspaceItemInfo> op) {
         for (ItemInfo info : itemsIdMap) {
             if (info instanceof WorkspaceItemInfo && userHandle.equals(info.user)) {
                 op.accept((WorkspaceItemInfo) info);
             }
         }

         for (int i = extraItems.size() - 1; i >= 0; i--) {
             for (ItemInfo info : extraItems.valueAt(i).items) {
                 if (info instanceof WorkspaceItemInfo && userHandle.equals(info.user)) {
                     op.accept((WorkspaceItemInfo) info);
                 }
             }
         }
     }

     /**
      * An object containing items corresponding to a fixed container
      */
     public static class FixedContainerItems {

         public final int containerId;
         public final List<ItemInfo> items;

         public FixedContainerItems(int containerId) {
             this(containerId, new ArrayList<>());
         }

         public FixedContainerItems(int containerId, List<ItemInfo> items) {
             this.containerId = containerId;
             this.items = items;
         }

         @Override
         public FixedContainerItems clone() {
             return new FixedContainerItems(containerId, new ArrayList<>(items));
         }

         public void setItems(List<ItemInfo> newItems) {
             items.clear();
             newItems.forEach(item -> {
                 item.container = containerId;
                 items.add(item);
             });
         }
     }


     public interface Callbacks {
         // If the launcher has permission to access deep shortcuts.
         int FLAG_HAS_SHORTCUT_PERMISSION = 1 << 0;
         // If quiet mode is enabled for any user
         int FLAG_QUIET_MODE_ENABLED = 1 << 1;
         // If launcher can change quiet mode
         int FLAG_QUIET_MODE_CHANGE_PERMISSION = 1 << 2;

         /**
          * Returns the page number to bind first, synchronously if possible or -1
          */
         int getPageToBindSynchronously();
         void clearPendingBinds();
         void startBinding();
         void bindItems(List<ItemInfo> shortcuts, boolean forceAnimateIcons);
         void bindScreens(IntArray orderedScreenIds);
         void finishFirstPageBind(ViewOnDrawExecutor executor);
         void finishBindingItems(int pageBoundFirst);
         void preAddApps();
         void bindAppsAdded(IntArray newScreens,
                 ArrayList<ItemInfo> addNotAnimated, ArrayList<ItemInfo> addAnimated);

         /**
          * Binds updated incremental download progress
          */
         void bindIncrementalDownloadProgressUpdated(AppInfo app);
         void bindWorkspaceItemsChanged(List<WorkspaceItemInfo> updated);
         void bindWidgetsRestored(ArrayList<LauncherAppWidgetInfo> widgets);
         void bindRestoreItemsChange(HashSet<ItemInfo> updates);
         void bindWorkspaceComponentsRemoved(ItemInfoMatcher matcher);
         void bindAllWidgets(List<WidgetsListBaseEntry> widgets);
         void onPageBoundSynchronously(int page);
         void executeOnNextDraw(ViewOnDrawExecutor executor);
         void bindDeepShortcutMap(HashMap<ComponentKey, Integer> deepShortcutMap);

         /**
          * Binds extra item provided any external source
          */
         default void bindExtraContainerItems(FixedContainerItems item) { }

         void bindAllApplications(AppInfo[] apps, int flags);
     }
 }
	/*
	* 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.model;

	import static android.content.pm.LauncherApps.ShortcutQuery.FLAG_GET_KEY_FIELDS_ONLY;

	import static com.android.launcher3.model.WidgetsModel.GO_DISABLE_WIDGETS;
	import static com.android.launcher3.shortcuts.ShortcutRequest.PINNED;

	import static java.util.stream.Collectors.groupingBy;
	import static java.util.stream.Collectors.mapping;

	import android.content.Context;
	import android.content.pm.LauncherApps;
	import android.content.pm.ShortcutInfo;
	import android.os.UserHandle;
	import android.text.TextUtils;
	import android.util.ArraySet;
	import android.util.Log;

	import com.android.launcher3.LauncherSettings;
	import com.android.launcher3.LauncherSettings.Favorites;
	import com.android.launcher3.Workspace;
	import com.android.launcher3.config.FeatureFlags;
	import com.android.launcher3.model.data.AppInfo;
	import com.android.launcher3.model.data.FolderInfo;
	import com.android.launcher3.model.data.ItemInfo;
	import com.android.launcher3.model.data.LauncherAppWidgetInfo;
	import com.android.launcher3.model.data.WorkspaceItemInfo;
	import com.android.launcher3.pm.UserCache;
	import com.android.launcher3.shortcuts.ShortcutKey;
	import com.android.launcher3.shortcuts.ShortcutRequest;
	import com.android.launcher3.shortcuts.ShortcutRequest.QueryResult;
	import com.android.launcher3.util.ComponentKey;
	import com.android.launcher3.util.IntArray;
	import com.android.launcher3.util.IntSet;
	import com.android.launcher3.util.IntSparseArrayMap;
	import com.android.launcher3.util.ItemInfoMatcher;
	import com.android.launcher3.util.ViewOnDrawExecutor;
	import com.android.launcher3.widget.model.WidgetsListBaseEntry;

	import java.io.FileDescriptor;
	import java.io.PrintWriter;
	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.Collections;
	import java.util.HashMap;
	import java.util.HashSet;
	import java.util.Iterator;
	import java.util.List;
	import java.util.Map;
	import java.util.Set;
	import java.util.function.Consumer;
	import java.util.stream.Collectors;
	import java.util.stream.Stream;

	/**
	* All the data stored in-memory and managed by the LauncherModel
	*/
	public class BgDataModel {

	private static final String TAG = "BgDataModel";

	/**
	* Map of all the ItemInfos (shortcuts, folders, and widgets) created by
	* LauncherModel to their ids
	*/
	public final IntSparseArrayMap<ItemInfo> itemsIdMap = new IntSparseArrayMap<>();

	/**
	* List of all the folders and shortcuts directly on the home screen (no widgets
	* or shortcuts within folders).
	*/
	public final ArrayList<ItemInfo> workspaceItems = new ArrayList<>();

	/**
	* All LauncherAppWidgetInfo created by LauncherModel.
	*/
	public final ArrayList<LauncherAppWidgetInfo> appWidgets = new ArrayList<>();

	/**
	* Map of id to FolderInfos of all the folders created by LauncherModel
	*/
	public final IntSparseArrayMap<FolderInfo> folders = new IntSparseArrayMap<>();

	/**
	* Extra container based items
	*/
	public final IntSparseArrayMap<FixedContainerItems> extraItems = new IntSparseArrayMap<>();

	/**
	* Maps all launcher activities to counts of their shortcuts.
	*/
	public final HashMap<ComponentKey, Integer> deepShortcutMap = new HashMap<>();

	/**
	* Entire list of widgets.
	*/
	public final WidgetsModel widgetsModel = new WidgetsModel();

	/**
	* Id when the model was last bound
	*/
	public int lastBindId = 0;

	/**
	* Clears all the data
	*/
	public synchronized void clear() {
	workspaceItems.clear();
	appWidgets.clear();
	folders.clear();
	itemsIdMap.clear();
	deepShortcutMap.clear();
	extraItems.clear();
	}

	/**
	* Creates an array of valid workspace screens based on current items in the model.
	*/
	public synchronized IntArray collectWorkspaceScreens() {
	IntSet screenSet = new IntSet();
	for (ItemInfo item: itemsIdMap) {
	if (item.container == LauncherSettings.Favorites.CONTAINER_DESKTOP) {
	screenSet.add(item.screenId);
	}
	}
	if (FeatureFlags.QSB_ON_FIRST_SCREEN \|\| screenSet.isEmpty()) {
	screenSet.add(Workspace.FIRST_SCREEN_ID);
	}
	return screenSet.getArray();
	}

	public synchronized void dump(String prefix, FileDescriptor fd, PrintWriter writer,
	String[] args) {
	writer.println(prefix + "Data Model:");
	writer.println(prefix + " ---- workspace items ");
	for (int i = 0; i < workspaceItems.size(); i++) {
	writer.println(prefix + '\t' + workspaceItems.get(i).toString());
	}
	writer.println(prefix + " ---- appwidget items ");
	for (int i = 0; i < appWidgets.size(); i++) {
	writer.println(prefix + '\t' + appWidgets.get(i).toString());
	}
	writer.println(prefix + " ---- folder items ");
	for (int i = 0; i< folders.size(); i++) {
	writer.println(prefix + '\t' + folders.valueAt(i).toString());
	}
	writer.println(prefix + " ---- items id map ");
	for (int i = 0; i< itemsIdMap.size(); i++) {
	writer.println(prefix + '\t' + itemsIdMap.valueAt(i).toString());
	}

	if (args.length > 0 && TextUtils.equals(args[0], "--all")) {
	writer.println(prefix + "shortcut counts ");
	for (Integer count : deepShortcutMap.values()) {
	writer.print(count + ", ");
	}
	writer.println();
	}
	}

	public synchronized void removeItem(Context context, ItemInfo... items) {
	removeItem(context, Arrays.asList(items));
	}

	public synchronized void removeItem(Context context, Iterable<? extends ItemInfo> items) {
	ArraySet<UserHandle> updatedDeepShortcuts = new ArraySet<>();
	for (ItemInfo item : items) {
	switch (item.itemType) {
	case LauncherSettings.Favorites.ITEM_TYPE_FOLDER:
	folders.remove(item.id);
	if (FeatureFlags.IS_STUDIO_BUILD) {
	for (ItemInfo info : itemsIdMap) {
	if (info.container == item.id) {
	// We are deleting a folder which still contains items that
	// think they are contained by that folder.
	String msg = "deleting a folder (" + item + ") which still " +
	"contains items (" + info + ")";
	Log.e(TAG, msg);
	}
	}
	}
	workspaceItems.remove(item);
	break;
	case LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT: {
	updatedDeepShortcuts.add(item.user);
	// Fall through.
	}
	case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION:
	case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
	workspaceItems.remove(item);
	break;
	case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET:
	case LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET:
	appWidgets.remove(item);
	break;
	}
	itemsIdMap.remove(item.id);
	}
	updatedDeepShortcuts.forEach(user -> updateShortcutPinnedState(context, user));
	}

	public synchronized void addItem(Context context, ItemInfo item, boolean newItem) {
	itemsIdMap.put(item.id, item);
	switch (item.itemType) {
	case LauncherSettings.Favorites.ITEM_TYPE_FOLDER:
	folders.put(item.id, (FolderInfo) item);
	workspaceItems.add(item);
	break;
	case LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT:
	case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION:
	case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
	if (item.container == LauncherSettings.Favorites.CONTAINER_DESKTOP \|\|
	item.container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) {
	workspaceItems.add(item);
	} else {
	if (newItem) {
	if (!folders.containsKey(item.container)) {
	// Adding an item to a folder that doesn't exist.
	String msg = "adding item: " + item + " to a folder that " +
	" doesn't exist";
	Log.e(TAG, msg);
	}
	} else {
	findOrMakeFolder(item.container).add((WorkspaceItemInfo) item, false);
	}

	}
	break;
	case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET:
	case LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET:
	appWidgets.add((LauncherAppWidgetInfo) item);
	break;
	}
	if (newItem && item.itemType == LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT) {
	updateShortcutPinnedState(context, item.user);
	}
	}

	/**
	* Updates the deep shortucts state in system to match out internal model, pinning any missing
	* shortcuts and unpinning any extra shortcuts.
	*/
	public void updateShortcutPinnedState(Context context) {
	for (UserHandle user : UserCache.INSTANCE.get(context).getUserProfiles()) {
	updateShortcutPinnedState(context, user);
	}
	}

	/**
	* Updates the deep shortucts state in system to match out internal model, pinning any missing
	* shortcuts and unpinning any extra shortcuts.
	*/
	public synchronized void updateShortcutPinnedState(Context context, UserHandle user) {
	if (GO_DISABLE_WIDGETS) {
	return;
	}

	// Collect all system shortcuts
	QueryResult result = new ShortcutRequest(context, user)
	.query(PINNED \| FLAG_GET_KEY_FIELDS_ONLY);
	if (!result.wasSuccess()) {
	return;
	}
	// Map of packageName to shortcutIds that are currently in the system
	Map<String, Set<String>> systemMap = result.stream()
	.collect(groupingBy(ShortcutInfo::getPackage,
	mapping(ShortcutInfo::getId, Collectors.toSet())));

	// Collect all model shortcuts
	Stream.Builder<WorkspaceItemInfo> itemStream = Stream.builder();
	forAllWorkspaceItemInfos(user, itemStream::accept);
	// Map of packageName to shortcutIds that are currently in our model
	Map<String, Set<String>> modelMap = Stream.concat(
	// Model shortcuts
	itemStream.build()
	.filter(wi -> wi.itemType == Favorites.ITEM_TYPE_DEEP_SHORTCUT)
	.map(ShortcutKey::fromItemInfo),
	// Pending shortcuts
	ItemInstallQueue.INSTANCE.get(context).getPendingShortcuts(user))
	.collect(groupingBy(ShortcutKey::getPackageName,
	mapping(ShortcutKey::getId, Collectors.toSet())));

	// Check for diff
	for (Map.Entry<String, Set<String>> entry : modelMap.entrySet()) {
	Set<String> modelShortcuts = entry.getValue();
	Set<String> systemShortcuts = systemMap.remove(entry.getKey());
	if (systemShortcuts == null) {
	systemShortcuts = Collections.emptySet();
	}

	// Do not use .equals as it can vary based on the type of set
	if (systemShortcuts.size() != modelShortcuts.size()
	\|\| !systemShortcuts.containsAll(modelShortcuts)) {
	// Update system state for this package
	try {
	context.getSystemService(LauncherApps.class).pinShortcuts(
	entry.getKey(), new ArrayList<>(modelShortcuts), user);
	} catch (SecurityException \| IllegalStateException e) {
	Log.w(TAG, "Failed to pin shortcut", e);
	}
	}
	}

	// If there are any extra pinned shortcuts, remove them
	systemMap.keySet().forEach(packageName -> {
	// Update system state
	try {
	context.getSystemService(LauncherApps.class).pinShortcuts(
	packageName, Collections.emptyList(), user);
	} catch (SecurityException \| IllegalStateException e) {
	Log.w(TAG, "Failed to unpin shortcut", e);
	}
	});
	}

	/**
	* Return an existing FolderInfo object if we have encountered this ID previously,
	* or make a new one.
	*/
	public synchronized FolderInfo findOrMakeFolder(int id) {
	// See if a placeholder was created for us already
	FolderInfo folderInfo = folders.get(id);
	if (folderInfo == null) {
	// No placeholder -- create a new instance
	folderInfo = new FolderInfo();
	folders.put(id, folderInfo);
	}
	return folderInfo;
	}

	/**
	* Clear all the deep shortcut counts for the given package, and re-add the new shortcut counts.
	*/
	public synchronized void updateDeepShortcutCounts(
	String packageName, UserHandle user, List<ShortcutInfo> shortcuts) {
	if (packageName != null) {
	Iterator<ComponentKey> keysIter = deepShortcutMap.keySet().iterator();
	while (keysIter.hasNext()) {
	ComponentKey next = keysIter.next();
	if (next.componentName.getPackageName().equals(packageName)
	&& next.user.equals(user)) {
	keysIter.remove();
	}
	}
	}

	// Now add the new shortcuts to the map.
	for (ShortcutInfo shortcut : shortcuts) {
	boolean shouldShowInContainer = shortcut.isEnabled()
	&& (shortcut.isDeclaredInManifest() \|\| shortcut.isDynamic())
	&& shortcut.getActivity() != null;
	if (shouldShowInContainer) {
	ComponentKey targetComponent
	= new ComponentKey(shortcut.getActivity(), shortcut.getUserHandle());

	Integer previousCount = deepShortcutMap.get(targetComponent);
	deepShortcutMap.put(targetComponent, previousCount == null ? 1 : previousCount + 1);
	}
	}
	}

	/**
	* Returns a list containing all workspace items including widgets.
	*/
	public synchronized ArrayList<ItemInfo> getAllWorkspaceItems() {
	ArrayList<ItemInfo> items = new ArrayList<>(workspaceItems.size() + appWidgets.size());
	items.addAll(workspaceItems);
	items.addAll(appWidgets);
	return items;
	}

	/**
	* Calls the provided {@code op} for all workspaceItems in the in-memory model (both persisted
	* items and dynamic/predicted items for the provided {@code userHandle}.
	* Note the call is not synchronized over the model, that should be handled by the called.
	*/
	public void forAllWorkspaceItemInfos(UserHandle userHandle, Consumer<WorkspaceItemInfo> op) {
	for (ItemInfo info : itemsIdMap) {
	if (info instanceof WorkspaceItemInfo && userHandle.equals(info.user)) {
	op.accept((WorkspaceItemInfo) info);
	}
	}

	for (int i = extraItems.size() - 1; i >= 0; i--) {
	for (ItemInfo info : extraItems.valueAt(i).items) {
	if (info instanceof WorkspaceItemInfo && userHandle.equals(info.user)) {
	op.accept((WorkspaceItemInfo) info);
	}
	}
	}
	}

	/**
	* An object containing items corresponding to a fixed container
	*/
	public static class FixedContainerItems {

	public final int containerId;
	public final List<ItemInfo> items;

	public FixedContainerItems(int containerId) {
	this(containerId, new ArrayList<>());
	}

	public FixedContainerItems(int containerId, List<ItemInfo> items) {
	this.containerId = containerId;
	this.items = items;
	}

	@Override
	public FixedContainerItems clone() {
	return new FixedContainerItems(containerId, new ArrayList<>(items));
	}

	public void setItems(List<ItemInfo> newItems) {
	items.clear();
	newItems.forEach(item -> {
	item.container = containerId;
	items.add(item);
	});
	}
	}


	public interface Callbacks {
	// If the launcher has permission to access deep shortcuts.
	int FLAG_HAS_SHORTCUT_PERMISSION = 1 << 0;
	// If quiet mode is enabled for any user
	int FLAG_QUIET_MODE_ENABLED = 1 << 1;
	// If launcher can change quiet mode
	int FLAG_QUIET_MODE_CHANGE_PERMISSION = 1 << 2;

	/**
	* Returns the page number to bind first, synchronously if possible or -1
	*/
	int getPageToBindSynchronously();
	void clearPendingBinds();
	void startBinding();
	void bindItems(List<ItemInfo> shortcuts, boolean forceAnimateIcons);
	void bindScreens(IntArray orderedScreenIds);
	void finishFirstPageBind(ViewOnDrawExecutor executor);
	void finishBindingItems(int pageBoundFirst);
	void preAddApps();
	void bindAppsAdded(IntArray newScreens,
	ArrayList<ItemInfo> addNotAnimated, ArrayList<ItemInfo> addAnimated);

	/**
	* Binds updated incremental download progress
	*/
	void bindIncrementalDownloadProgressUpdated(AppInfo app);
	void bindWorkspaceItemsChanged(List<WorkspaceItemInfo> updated);
	void bindWidgetsRestored(ArrayList<LauncherAppWidgetInfo> widgets);
	void bindRestoreItemsChange(HashSet<ItemInfo> updates);
	void bindWorkspaceComponentsRemoved(ItemInfoMatcher matcher);
	void bindAllWidgets(List<WidgetsListBaseEntry> widgets);
	void onPageBoundSynchronously(int page);
	void executeOnNextDraw(ViewOnDrawExecutor executor);
	void bindDeepShortcutMap(HashMap<ComponentKey, Integer> deepShortcutMap);

	/**
	* Binds extra item provided any external source
	*/
	default void bindExtraContainerItems(FixedContainerItems item) { }

	void bindAllApplications(AppInfo[] apps, int flags);
	}
	}