Java tutorial
/* * Copyright (C) 2015 Kumaresan Rajeswaran * * 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.leanlauncher; import android.appwidget.AppWidgetManager; import android.appwidget.AppWidgetProviderInfo; import android.content.BroadcastReceiver; import android.content.ComponentName; import android.content.ContentProviderClient; import android.content.ContentResolver; import android.content.ContentValues; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.content.pm.PackageManager; import android.content.pm.ResolveInfo; import android.content.res.Configuration; import android.content.res.Resources; import android.database.Cursor; import android.net.Uri; import android.os.Environment; import android.os.Handler; import android.os.HandlerThread; import android.os.Process; import android.os.RemoteException; import android.os.SystemClock; import android.provider.BaseColumns; import android.support.v4.util.ArrayMap; import android.util.Log; import com.android.leanlauncher.compat.AppWidgetManagerCompat; import com.android.leanlauncher.compat.LauncherActivityInfoCompat; import com.android.leanlauncher.compat.LauncherAppsCompat; import com.android.leanlauncher.compat.UserHandleCompat; import com.android.leanlauncher.compat.UserManagerCompat; import java.lang.ref.WeakReference; import java.net.URISyntaxException; import java.text.Collator; import java.util.ArrayList; import java.util.Arrays; import java.util.Collection; import java.util.Collections; import java.util.Comparator; import java.util.HashMap; import java.util.HashSet; import java.util.List; import java.util.Map; import java.util.Map.Entry; /** * Maintains in-memory state of the Launcher. It is expected that there should be only one * LauncherModel object held in a static. Also provide APIs for updating the database state * for the Launcher. */ public class LauncherModel extends BroadcastReceiver implements LauncherAppsCompat.OnAppsChangedCallbackCompat { static final boolean DEBUG_LOADERS = BuildConfig.DEBUG; private static final boolean DEBUG_RECEIVER = BuildConfig.DEBUG; static final String TAG = "Launcher.Model"; private static final int ITEMS_CHUNK = 6; // batch size for the workspace icons private static final String SYSTEM_READY = "com.android.launcher.SYSTEM_READY"; private final boolean mAppsCanBeOnRemoveableStorage; private final LauncherAppState mApp; private final Object mLock = new Object(); private DeferredHandler mHandler = new DeferredHandler(); private LoaderTask mLoaderTask; private boolean mIsLoaderTaskRunning; // Specific runnable types that are run on the main thread deferred handler, this allows us to // clear all queued binding runnables when the Launcher activity is destroyed. private static final int MAIN_THREAD_BINDING_RUNNABLE = 1; private static final HandlerThread sWorkerThread = new HandlerThread("launcher-loader"); static { sWorkerThread.start(); } private static final Handler sWorker = new Handler(sWorkerThread.getLooper()); // We start off with everything not loaded. After that, we assume that // our monitoring of the package manager provides all updates and we never // need to do a requery. These are only ever touched from the loader thread. private boolean mWorkspaceLoaded; private boolean mAllAppsLoaded; // When we are loading pages synchronously, we can't just post the binding of items on the side // pages as this delays the rotation process. Instead, we wait for a callback from the first // draw (in Workspace) to initiate the binding of the remaining side pages. Any time we start // a normal load, we also clear this set of Runnables. static final ArrayList<Runnable> mDeferredBindRunnables = new ArrayList<Runnable>(); private WeakReference<Callbacks> mCallbacks; // < only access in worker thread > AllAppsList mBgAllAppsList; // The lock that must be acquired before referencing any static bg data structures. Unlike // other locks, this one can generally be held long-term because we never expect any of these // static data structures to be referenced outside of the worker thread except on the first // load after configuration change. static final Object sBgLock = new Object(); // sBgItemsIdMap maps *all* the ItemInfos (shortcuts and widgets) created by // LauncherModel to their ids static final HashMap<Long, ItemInfo> sBgItemsIdMap = new HashMap<>(); // sBgWorkspaceItems is passed to bindItems, which expects a list of all shortcuts // created by LauncherModel that are directly on the home screen (however, no widgets) static final ArrayList<ItemInfo> sBgWorkspaceItems = new ArrayList<ItemInfo>(); // sBgAppWidgets is all LauncherAppWidgetInfo created by LauncherModel. Passed to bindAppWidget() static final ArrayList<LauncherAppWidgetInfo> sBgAppWidgets = new ArrayList<LauncherAppWidgetInfo>(); static long sBgWorkspaceScreenId; // sPendingPackages is a set of packages which could be on sdcard and are not available yet static final ArrayMap<UserHandleCompat, HashSet<String>> sPendingPackages = new ArrayMap<>(); // </ only access in worker thread > private IconCache mIconCache; protected int mPreviousConfigMcc; private final LauncherAppsCompat mLauncherApps; private final UserManagerCompat mUserManager; public interface Callbacks { boolean setLoadOnResume(); void startBinding(); void bindItems(ArrayList<ItemInfo> shortcuts, int start, int end, boolean forceAnimateIcons); void bindDefaultScreen(); void finishBindingItems(); void bindAppWidget(LauncherAppWidgetInfo info); void bindAllApplications(ArrayList<AppInfo> apps); void bindAppsAdded(long newScreen, ArrayList<ItemInfo> addNotAnimated, ArrayList<ItemInfo> addAnimated, ArrayList<AppInfo> addedApps); void bindAppsUpdated(ArrayList<AppInfo> apps); void bindShortcutsChanged(ArrayList<ShortcutInfo> updated, ArrayList<ShortcutInfo> removed, UserHandleCompat user); void bindWidgetsRestored(ArrayList<LauncherAppWidgetInfo> widgets); void bindComponentsRemoved(ArrayList<String> packageNames, ArrayList<AppInfo> appInfos, UserHandleCompat user, int reason); void bindPackagesUpdated(ArrayList<Object> widgetsAndShortcuts); } public interface ItemInfoFilter { boolean filterItem(ItemInfo parent, ItemInfo info, ComponentName cn); } LauncherModel(LauncherAppState app, IconCache iconCache) { Context context = app.getContext(); mAppsCanBeOnRemoveableStorage = Environment.isExternalStorageRemovable(); mApp = app; mBgAllAppsList = new AllAppsList(iconCache); mIconCache = iconCache; final Resources res = context.getResources(); Configuration config = res.getConfiguration(); mPreviousConfigMcc = config.mcc; mLauncherApps = LauncherAppsCompat.getInstance(context); mUserManager = UserManagerCompat.getInstance(context); } /** Runs the specified runnable immediately if called from the main thread, otherwise it is * posted on the main thread handler. */ private void runOnMainThread(Runnable r) { if (sWorkerThread.getThreadId() == Process.myTid()) { // If we are on the worker thread, post onto the main handler mHandler.post(r); } else { r.run(); } } /** Runs the specified runnable immediately if called from the worker thread, otherwise it is * posted on the worker thread handler. */ private static void runOnWorkerThread(Runnable r) { if (sWorkerThread.getThreadId() == Process.myTid()) { r.run(); } else { // If we are not on the worker thread, then post to the worker handler sWorker.post(r); } } public void addAppsToAllApps(final Context ctx, final ArrayList<AppInfo> allAppsApps) { final Callbacks callbacks = getCallback(); if (allAppsApps == null) { throw new RuntimeException("allAppsApps must not be null"); } if (allAppsApps.isEmpty()) { return; } // Process the newly added applications and add them to the database first Runnable r = new Runnable() { public void run() { runOnMainThread(new Runnable() { public void run() { Callbacks cb = getCallback(); if (callbacks == cb && cb != null) { callbacks.bindAppsAdded(0, null, null, allAppsApps); } } }); } }; runOnWorkerThread(r); } public void unbindItemInfosAndClearQueuedBindRunnables() { if (sWorkerThread.getThreadId() == Process.myTid()) { throw new RuntimeException("Expected unbindLauncherItemInfos() to be called from the " + "main thread"); } // Clear any deferred bind runnables synchronized (mDeferredBindRunnables) { mDeferredBindRunnables.clear(); } // Remove any queued bind runnables mHandler.cancelAllRunnablesOfType(MAIN_THREAD_BINDING_RUNNABLE); // Unbind all the workspace items unbindWorkspaceItemsOnMainThread(); } /** Unbinds all the sBgWorkspaceItems and sBgAppWidgets on the main thread */ void unbindWorkspaceItemsOnMainThread() { // Ensure that we don't use the same workspace items data structure on the main thread // by making a copy of workspace items first. final ArrayList<ItemInfo> tmpWorkspaceItems = new ArrayList<ItemInfo>(); final ArrayList<ItemInfo> tmpAppWidgets = new ArrayList<ItemInfo>(); synchronized (sBgLock) { tmpWorkspaceItems.addAll(sBgWorkspaceItems); tmpAppWidgets.addAll(sBgAppWidgets); } Runnable r = new Runnable() { @Override public void run() { for (ItemInfo item : tmpWorkspaceItems) { item.unbind(); } for (ItemInfo item : tmpAppWidgets) { item.unbind(); } } }; runOnMainThread(r); } /** * Adds an item to the DB if it was not created previously, or move it to a new * <container, screen, cellX, cellY> */ static void addOrMoveItemInDatabase(Context context, ItemInfo item, long container, int cellX, int cellY) { if (item.container == ItemInfo.NO_ID) { // From all apps addItemToDatabase(context, item, container, cellX, cellY, false); } else { // From somewhere else moveItemInDatabase(context, item, container, cellX, cellY); } } static void updateItemInDatabaseHelper(Context context, final ContentValues values, final ItemInfo item) { final long itemId = item.id; final Uri uri = LauncherSettings.Favorites.getContentUri(itemId, false); final ContentResolver cr = context.getContentResolver(); Runnable r = new Runnable() { public void run() { cr.update(uri, values, null, null); updateItemArrays(item, itemId); } }; runOnWorkerThread(r); } @SuppressWarnings("unchecked") public ArrayList<AppInfo> getAllApps() { return (ArrayList<AppInfo>) mBgAllAppsList.data.clone(); } static void updateItemArrays(ItemInfo item, long itemId) { // Lock on mBgLock *after* the db operation synchronized (sBgLock) { if (item.container != LauncherSettings.Favorites.CONTAINER_DESKTOP) { String msg = "item: " + item + " container being set to: " + item.container + ", not in the desktop"; Log.i(TAG, msg); } // Items are added/removed from the corresponding FolderInfo elsewhere, such // as in Workspace.onDrop. Here, we just add/remove them from the list of items // that are on the desktop, as appropriate ItemInfo modelItem = sBgItemsIdMap.get(itemId); if (modelItem != null && (modelItem.container == LauncherSettings.Favorites.CONTAINER_DESKTOP)) { switch (modelItem.itemType) { case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: if (!sBgWorkspaceItems.contains(modelItem)) { sBgWorkspaceItems.add(modelItem); } break; default: break; } } else { sBgWorkspaceItems.remove(modelItem); } } } /** * Move an item in the DB to a new <container, screen, cellX, cellY> */ static void moveItemInDatabase(Context context, final ItemInfo item, final long container, final int cellX, final int cellY) { item.container = container; item.cellX = cellX; item.cellY = cellY; final ContentValues values = new ContentValues(); values.put(LauncherSettings.Favorites.CONTAINER, item.container); values.put(LauncherSettings.Favorites.CELLX, item.cellX); values.put(LauncherSettings.Favorites.CELLY, item.cellY); updateItemInDatabaseHelper(context, values, item); } /** * Move and/or resize item in the DB to a new <container, screen, cellX, cellY, spanX, spanY> */ static void modifyItemInDatabase(Context context, final ItemInfo item, final long container, final int cellX, final int cellY, final int spanX, final int spanY) { item.container = container; item.cellX = cellX; item.cellY = cellY; item.spanX = spanX; item.spanY = spanY; final ContentValues values = new ContentValues(); values.put(LauncherSettings.Favorites.CONTAINER, item.container); values.put(LauncherSettings.Favorites.CELLX, item.cellX); values.put(LauncherSettings.Favorites.CELLY, item.cellY); values.put(LauncherSettings.Favorites.SPANX, item.spanX); values.put(LauncherSettings.Favorites.SPANY, item.spanY); updateItemInDatabaseHelper(context, values, item); } /** * Update an item to the database in a specified container. */ static void updateItemInDatabase(Context context, final ItemInfo item) { final ContentValues values = new ContentValues(); item.onAddToDatabase(context, values); item.updateValuesWithCoordinates(values, item.cellX, item.cellY); updateItemInDatabaseHelper(context, values, item); } /** * Add an item to the database in a specified container. Sets the container, screen, cellX and * cellY fields of the item. Also assigns an ID to the item. */ static void addItemToDatabase(Context context, final ItemInfo item, final long container, final int cellX, final int cellY, final boolean notify) { item.container = container; item.cellX = cellX; item.cellY = cellY; final ContentValues values = new ContentValues(); final ContentResolver cr = context.getContentResolver(); item.onAddToDatabase(context, values); item.id = LauncherAppState.getLauncherProvider().generateNewItemId(); values.put(LauncherSettings.Favorites._ID, item.id); item.updateValuesWithCoordinates(values, item.cellX, item.cellY); Runnable r = new Runnable() { public void run() { cr.insert(notify ? LauncherSettings.Favorites.CONTENT_URI : LauncherSettings.Favorites.CONTENT_URI_NO_NOTIFICATION, values); // Lock on mBgLock *after* the db operation synchronized (sBgLock) { sBgItemsIdMap.put(item.id, item); switch (item.itemType) { case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: if (item.container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { sBgWorkspaceItems.add(item); } else { // Adding an item to a folder that doesn't exist. String msg = "adding item: " + item + " to a container that " + " doesn't exist"; Log.e(TAG, msg); } break; case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: sBgAppWidgets.add((LauncherAppWidgetInfo) item); break; } } } }; runOnWorkerThread(r); } private static ArrayList<ItemInfo> getItemsByPackageName(final String pn, final UserHandleCompat user) { ItemInfoFilter filter = new ItemInfoFilter() { @Override public boolean filterItem(ItemInfo parent, ItemInfo info, ComponentName cn) { return cn.getPackageName().equals(pn) && info.user.equals(user); } }; return filterItemInfos(sBgItemsIdMap.values(), filter); } /** * Removes all the items from the database corresponding to the specified package. */ static void deletePackageFromDatabase(Context context, final String pn, final UserHandleCompat user) { deleteItemsFromDatabase(context, getItemsByPackageName(pn, user)); } /** * Removes the specified item from the database * @param context * @param item */ static void deleteItemFromDatabase(Context context, final ItemInfo item) { ArrayList<ItemInfo> items = new ArrayList<ItemInfo>(); items.add(item); deleteItemsFromDatabase(context, items); } /** * Removes the specified items from the database * @param context * @param items */ static void deleteItemsFromDatabase(Context context, final ArrayList<? extends ItemInfo> items) { final ContentResolver cr = context.getContentResolver(); Runnable r = new Runnable() { public void run() { for (ItemInfo item : items) { final Uri uri = LauncherSettings.Favorites.getContentUri(item.id, false); cr.delete(uri, null, null); // Lock on mBgLock *after* the db operation synchronized (sBgLock) { switch (item.itemType) { case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: sBgWorkspaceItems.remove(item); break; case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: sBgAppWidgets.remove(item); break; } sBgItemsIdMap.remove(item.id); } } } }; runOnWorkerThread(r); } /** * Set this as the current Launcher activity object for the loader. */ public void initialize(Callbacks callbacks) { synchronized (mLock) { mCallbacks = new WeakReference<Callbacks>(callbacks); } } @Override public void onPackageChanged(String packageName, UserHandleCompat user) { int op = PackageUpdatedTask.OP_UPDATE; enqueuePackageUpdated(new PackageUpdatedTask(op, new String[] { packageName }, user)); } @Override public void onPackageRemoved(String packageName, UserHandleCompat user) { int op = PackageUpdatedTask.OP_REMOVE; enqueuePackageUpdated(new PackageUpdatedTask(op, new String[] { packageName }, user)); } @Override public void onPackageAdded(String packageName, UserHandleCompat user) { int op = PackageUpdatedTask.OP_ADD; enqueuePackageUpdated(new PackageUpdatedTask(op, new String[] { packageName }, user)); } @Override public void onPackagesAvailable(String[] packageNames, UserHandleCompat user, boolean replacing) { if (!replacing) { enqueuePackageUpdated(new PackageUpdatedTask(PackageUpdatedTask.OP_ADD, packageNames, user)); if (mAppsCanBeOnRemoveableStorage) { // Only rebind if we support removable storage. It catches the // case where // apps on the external sd card need to be reloaded startLoaderFromBackground(); } } else { // If we are replacing then just update the packages in the list enqueuePackageUpdated(new PackageUpdatedTask(PackageUpdatedTask.OP_UPDATE, packageNames, user)); } } @Override public void onPackagesUnavailable(String[] packageNames, UserHandleCompat user, boolean replacing) { if (!replacing) { enqueuePackageUpdated(new PackageUpdatedTask(PackageUpdatedTask.OP_UNAVAILABLE, packageNames, user)); } } /** * Call from the handler for ACTION_PACKAGE_ADDED, ACTION_PACKAGE_REMOVED and * ACTION_PACKAGE_CHANGED. */ @Override public void onReceive(Context context, Intent intent) { if (DEBUG_RECEIVER) Log.d(TAG, "onReceive intent=" + intent); final String action = intent.getAction(); if (Intent.ACTION_LOCALE_CHANGED.equals(action)) { // If we have changed locale we need to clear out the labels in all apps/workspace. forceReload(); } else if (Intent.ACTION_CONFIGURATION_CHANGED.equals(action)) { // Check if configuration change was an mcc/mnc change which would affect app resources // and we would need to clear out the labels in all apps/workspace. Same handling as // above for ACTION_LOCALE_CHANGED Configuration currentConfig = context.getResources().getConfiguration(); if (mPreviousConfigMcc != currentConfig.mcc) { Log.d(TAG, "Reload apps on config change. curr_mcc:" + currentConfig.mcc + " prevmcc:" + mPreviousConfigMcc); forceReload(); } // Update previousConfig mPreviousConfigMcc = currentConfig.mcc; } } void forceReload() { resetLoadedState(true, true); // Do this here because if the launcher activity is running it will be restarted. // If it's not running startLoaderFromBackground will merely tell it that it needs // to reload. startLoaderFromBackground(); } public void resetLoadedState(boolean resetAllAppsLoaded, boolean resetWorkspaceLoaded) { synchronized (mLock) { // Stop any existing loaders first, so they don't set mAllAppsLoaded or // mWorkspaceLoaded to true later stopLoaderLocked(); if (resetAllAppsLoaded) mAllAppsLoaded = false; if (resetWorkspaceLoaded) mWorkspaceLoaded = false; } } /** * When the launcher is in the background, it's possible for it to miss paired * configuration changes. So whenever we trigger the loader from the background * tell the launcher that it needs to re-run the loader when it comes back instead * of doing it now. */ public void startLoaderFromBackground() { boolean runLoader = false; Callbacks callbacks = getCallback(); if (callbacks != null) { // Only actually run the loader if they're not paused. if (!callbacks.setLoadOnResume()) { runLoader = true; } } if (runLoader) { startLoader(false, PagedView.INVALID_RESTORE_PAGE); } } // If there is already a loader task running, tell it to stop. // returns true if isLaunching() was true on the old task private boolean stopLoaderLocked() { boolean isLaunching = false; LoaderTask oldTask = mLoaderTask; if (oldTask != null) { if (oldTask.isLaunching()) { isLaunching = true; } oldTask.stopLocked(); } return isLaunching; } public boolean isCurrentCallbacks(Callbacks callbacks) { return (mCallbacks != null && mCallbacks.get() == callbacks); } public void startLoader(boolean isLaunching, int synchronousBindPage) { synchronized (mLock) { if (DEBUG_LOADERS) { Log.d(TAG, "startLoader isLaunching=" + isLaunching); } // Clear any deferred bind-runnables from the synchronized load process // We must do this before any loading/binding is scheduled below. synchronized (mDeferredBindRunnables) { mDeferredBindRunnables.clear(); } // Don't bother to start the thread if we know it's not going to do anything if (mCallbacks != null && mCallbacks.get() != null) { // If there is already one running, tell it to stop. // also, don't downgrade isLaunching if we're already running isLaunching = isLaunching || stopLoaderLocked(); mLoaderTask = new LoaderTask(mApp.getContext(), isLaunching); if (synchronousBindPage != PagedView.INVALID_RESTORE_PAGE && mAllAppsLoaded && mWorkspaceLoaded) { mLoaderTask.runBindSynchronousPage(synchronousBindPage); } else { sWorkerThread.setPriority(Thread.NORM_PRIORITY); sWorker.post(mLoaderTask); } } } } void bindRemainingSynchronousPages() { // Post the remaining side pages to be loaded if (!mDeferredBindRunnables.isEmpty()) { Runnable[] deferredBindRunnables = null; synchronized (mDeferredBindRunnables) { deferredBindRunnables = mDeferredBindRunnables.toArray(new Runnable[mDeferredBindRunnables.size()]); mDeferredBindRunnables.clear(); } for (final Runnable r : deferredBindRunnables) { mHandler.post(r, MAIN_THREAD_BINDING_RUNNABLE); } } } public void stopLoader() { synchronized (mLock) { if (mLoaderTask != null) { mLoaderTask.stopLocked(); } } } /** Loads the workspace db */ private static Long loadWorkspaceDb(Context context) { final ContentResolver contentResolver = context.getContentResolver(); final Uri screensUri = LauncherSettings.Favorites.CONTENT_URI; final Cursor sc = contentResolver.query(screensUri, null, null, null, null); long screenId = 0; try { final int idIndex = sc.getColumnIndexOrThrow(LauncherSettings.Workspace._ID); while (sc.moveToNext()) { try { screenId = sc.getLong(idIndex); } catch (Exception e) { Log.d(TAG, "Desktop items loading interrupted - invalid screens: " + e); } } } finally { sc.close(); } return screenId; } public boolean isAllAppsLoaded() { return mAllAppsLoaded; } boolean isLoadingWorkspace() { synchronized (mLock) { if (mLoaderTask != null) { return mLoaderTask.isLoadingWorkspace(); } } return false; } /** * Runnable for the thread that loads the contents of the launcher: * - workspace icons * - widgets * - all apps icons */ private class LoaderTask implements Runnable { private Context mContext; private boolean mIsLaunching; private boolean mIsLoadingAndBindingWorkspace; private boolean mStopped; private boolean mLoadAndBindStepFinished; private HashMap<Object, CharSequence> mLabelCache; LoaderTask(Context context, boolean isLaunching) { mContext = context; mIsLaunching = isLaunching; mLabelCache = new HashMap<>(); } boolean isLaunching() { return mIsLaunching; } boolean isLoadingWorkspace() { return mIsLoadingAndBindingWorkspace; } private void loadAndBindWorkspace() { mIsLoadingAndBindingWorkspace = true; // Load the workspace if (DEBUG_LOADERS) { Log.d(TAG, "loadAndBindWorkspace mWorkspaceLoaded=" + mWorkspaceLoaded); } if (!mWorkspaceLoaded) { loadWorkspace(); synchronized (LoaderTask.this) { if (!mStopped) { mWorkspaceLoaded = true; } } } // Bind the workspace bindWorkspace(0); } private void waitForIdle() { // Wait until the either we're stopped or the other threads are done. // This way we don't start loading all apps until the workspace has settled // down. synchronized (LoaderTask.this) { final long workspaceWaitTime = DEBUG_LOADERS ? SystemClock.uptimeMillis() : 0; mHandler.postIdle(new Runnable() { public void run() { synchronized (LoaderTask.this) { mLoadAndBindStepFinished = true; if (DEBUG_LOADERS) { Log.d(TAG, "done with previous binding step"); } LoaderTask.this.notify(); } } }); while (!mStopped && !mLoadAndBindStepFinished) { try { // Just in case mFlushingWorkerThread changes but we aren't woken up, // wait no longer than 1sec at a time this.wait(1000); } catch (InterruptedException ex) { // Ignore } } if (DEBUG_LOADERS) { Log.d(TAG, "waited " + (SystemClock.uptimeMillis() - workspaceWaitTime) + "ms for previous step to finish binding"); } } } void runBindSynchronousPage(int synchronousBindPage) { if (synchronousBindPage == PagedView.INVALID_RESTORE_PAGE) { // Ensure that we have a valid page index to load synchronously throw new RuntimeException( "Should not call runBindSynchronousPage() without " + "valid page index"); } if (!mAllAppsLoaded || !mWorkspaceLoaded) { // Ensure that we don't try and bind a specified page when the pages have not been // loaded already (we should load everything asynchronously in that case) throw new RuntimeException("Expecting AllApps and Workspace to be loaded"); } synchronized (mLock) { if (mIsLoaderTaskRunning) { // Ensure that we are never running the background loading at this point since // we also touch the background collections throw new RuntimeException("Error! Background loading is already running"); } } // XXX: Throw an exception if we are already loading (since we touch the worker thread // data structures, we can't allow any other thread to touch that data, but because // this call is synchronous, we can get away with not locking). // The LauncherModel is static in the LauncherAppState and mHandler may have queued // operations from the previous activity. We need to ensure that all queued operations // are executed before any synchronous binding work is done. mHandler.flush(); // Divide the set of loaded items into those that we are binding synchronously, and // everything else that is to be bound normally (asynchronously). bindWorkspace(synchronousBindPage); // XXX: For now, continue posting the binding of AllApps as there are other issues that // arise from that. onlyBindAllApps(); } public void run() { synchronized (mLock) { mIsLoaderTaskRunning = true; } // Optimize for end-user experience: if the Launcher is up and // running with the // All Apps interface in the foreground, load All Apps first. Otherwise, load the // workspace first (default). keep_running: { // Elevate priority when Home launches for the first time to avoid // starving at boot time. Staring at a blank home is not cool. synchronized (mLock) { if (DEBUG_LOADERS) Log.d(TAG, "Setting thread priority to " + (mIsLaunching ? "DEFAULT" : "BACKGROUND")); android.os.Process.setThreadPriority( mIsLaunching ? Process.THREAD_PRIORITY_DEFAULT : Process.THREAD_PRIORITY_BACKGROUND); } if (DEBUG_LOADERS) Log.d(TAG, "step 1: loading workspace"); loadAndBindWorkspace(); if (mStopped) { break keep_running; } // Whew! Hard work done. Slow us down, and wait until the UI thread has // settled down. synchronized (mLock) { if (mIsLaunching) { if (DEBUG_LOADERS) Log.d(TAG, "Setting thread priority to BACKGROUND"); android.os.Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND); } } waitForIdle(); // second step if (DEBUG_LOADERS) Log.d(TAG, "step 2: loading all apps"); loadAndBindAllApps(); // Restore the default thread priority after we are done loading items synchronized (mLock) { android.os.Process.setThreadPriority(Process.THREAD_PRIORITY_DEFAULT); } } // Clear out this reference, otherwise we end up holding it until all of the // callback runnables are done. mContext = null; synchronized (mLock) { // If we are still the last one to be scheduled, remove ourselves. if (mLoaderTask == this) { mLoaderTask = null; } mIsLoaderTaskRunning = false; } } public void stopLocked() { synchronized (LoaderTask.this) { mStopped = true; this.notify(); } } /** * Gets the callbacks object. If we've been stopped, or if the launcher object * has somehow been garbage collected, return null instead. Pass in the Callbacks * object that was around when the deferred message was scheduled, and if there's * a new Callbacks object around then also return null. This will save us from * calling onto it with data that will be ignored. */ Callbacks tryGetCallbacks(Callbacks oldCallbacks) { synchronized (mLock) { if (mStopped) { return null; } if (mCallbacks == null) { return null; } final Callbacks callbacks = mCallbacks.get(); if (callbacks != oldCallbacks) { return null; } if (callbacks == null) { Log.w(TAG, "no mCallbacks"); return null; } return callbacks; } } // check & update map of what's occupied; used to discard overlapping/invalid items private boolean checkItemPlacement(ItemInfo[][] occupied, ItemInfo item) { if (item.container != LauncherSettings.Favorites.CONTAINER_DESKTOP) { // Skip further checking if it is not in workspace container return true; } LauncherAppState app = LauncherAppState.getInstance(); DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); final int countX = (int) grid.numColumns; final int countY = (int) grid.numRows; if (occupied == null) { occupied = new ItemInfo[countX + 1][countY + 1]; } if (item.cellX < 0 || item.cellY < 0 || item.cellX + item.spanX > countX || item.cellY + item.spanY > countY) { Log.e(TAG, "Error loading shortcut " + item + " into cell (" + "-" + item.id + ":" + item.cellX + "," + item.cellY + ") out of screen bounds ( " + countX + "x" + countY + ")"); return false; } // Check if any workspace icons overlap with each other for (int x = item.cellX; x < (item.cellX + item.spanX); x++) { for (int y = item.cellY; y < (item.cellY + item.spanY); y++) { if (occupied[x][y] != null) { Log.e(TAG, "Error loading shortcut " + item + " into cell (" + "-" + item.id + ":" + x + "," + y + ") occupied by " + occupied[x][y]); return false; } } } for (int x = item.cellX; x < (item.cellX + item.spanX); x++) { for (int y = item.cellY; y < (item.cellY + item.spanY); y++) { occupied[x][y] = item; } } return true; } /** Clears all the sBg data structures */ private void clearSBgDataStructures() { synchronized (sBgLock) { sBgWorkspaceItems.clear(); sBgAppWidgets.clear(); sBgItemsIdMap.clear(); sBgWorkspaceScreenId = 0; } } private void loadWorkspace() { // Log to disk Log.d(TAG, "11683562 - loadWorkspace()"); final long t = DEBUG_LOADERS ? SystemClock.uptimeMillis() : 0; final Context context = mContext; final ContentResolver contentResolver = context.getContentResolver(); final PackageManager manager = context.getPackageManager(); final AppWidgetManager widgets = AppWidgetManager.getInstance(context); final boolean isSafeMode = manager.isSafeMode(); final LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(context); final boolean isSdCardReady = context.registerReceiver(null, new IntentFilter(SYSTEM_READY)) != null; // Make sure the default workspace is loaded Log.d(TAG, "loadWorkspace: loading default favorites"); LauncherAppState.getLauncherProvider().loadDefaultFavoritesIfNecessary(); synchronized (sBgLock) { clearSBgDataStructures(); final ArrayList<Long> itemsToRemove = new ArrayList<Long>(); final Uri contentUri = LauncherSettings.Favorites.CONTENT_URI_NO_NOTIFICATION; if (DEBUG_LOADERS) Log.d(TAG, "loading model from " + contentUri); final Cursor c = contentResolver.query(contentUri, null, null, null, null); // Load workspace in reverse order to ensure that latest items are loaded first (and // before any earlier duplicates) ItemInfo[][] occupied = null; try { final int idIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites._ID); final int intentIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.INTENT); final int titleIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.TITLE); final int containerIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.CONTAINER); final int itemTypeIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.ITEM_TYPE); final int appWidgetIdIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.APPWIDGET_ID); final int appWidgetProviderIndex = c .getColumnIndexOrThrow(LauncherSettings.Favorites.APPWIDGET_PROVIDER); final int cellXIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.CELLX); final int cellYIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.CELLY); final int spanXIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.SPANX); final int spanYIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.SPANY); final int restoredIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.RESTORED); final int profileIdIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.PROFILE_ID); final int iconPackageNameIndex = c .getColumnIndexOrThrow(LauncherSettings.Favorites.ICON_PACKAGE); final int iconDrawableNameIndex = c .getColumnIndexOrThrow(LauncherSettings.Favorites.ICON_RESOURCE); ShortcutInfo info; String intentDescription; LauncherAppWidgetInfo appWidgetInfo; int container; long id; Intent intent; UserHandleCompat user; while (!mStopped && c.moveToNext()) { try { int itemType = c.getInt(itemTypeIndex); boolean allowMissingTarget = false; switch (itemType) { case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: id = c.getLong(idIndex); intentDescription = c.getString(intentIndex); long serialNumber = c.getInt(profileIdIndex); user = mUserManager.getUserForSerialNumber(serialNumber); int disabledState = 0; if (user == null) { // User has been deleted remove the item. itemsToRemove.add(id); continue; } try { intent = Intent.parseUri(intentDescription, 0); ComponentName cn = intent.getComponent(); if (cn != null && cn.getPackageName() != null) { boolean validPkg = launcherApps .isPackageEnabledForProfile(cn.getPackageName(), user); boolean validComponent = validPkg && launcherApps.isActivityEnabledForProfile(cn, user); if (!validComponent) { if (!validPkg) { itemsToRemove.add(id); Log.d(TAG, "Not valid package for profile :" + cn); } else if (launcherApps.isAppEnabled(manager, cn.getPackageName(), PackageManager.GET_UNINSTALLED_PACKAGES)) { // Package is present but not available. allowMissingTarget = true; disabledState = ShortcutInfo.FLAG_DISABLED_NOT_AVAILABLE; Log.d(TAG, "App not enabled by PM! :" + cn); } else if (!isSdCardReady) { // SdCard is not ready yet. Package might get available, // once it is ready. Log.d(TAG, "SD card not ready yet, Invalid package: " + cn + " (check again later)"); HashSet<String> pkgs = sPendingPackages.get(user); if (pkgs == null) { pkgs = new HashSet<String>(); sPendingPackages.put(user, pkgs); } pkgs.add(cn.getPackageName()); allowMissingTarget = true; // Add the icon on the workspace anyway. } else { // Do not wait for external media load anymore. // Log the invalid package, and remove it Log.d(TAG, "Invalid package removed: " + cn); itemsToRemove.add(id); continue; } } } } catch (URISyntaxException e) { Log.d(TAG, "Invalid uri: " + intentDescription); continue; } if (itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION) { info = getShortcutInfo(intent, user, titleIndex, mLabelCache, allowMissingTarget); } else { info = getShortcutInfo(c, titleIndex); // App shortcuts that used to be automatically added to Launcher // didn't always have the correct intent flags set, so do that // here if (intent.getAction() != null && intent.getCategories() != null && intent.getAction().equals(Intent.ACTION_MAIN) && intent.getCategories().contains(Intent.CATEGORY_LAUNCHER)) { intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED); } } if (info != null) { info.id = id; info.intent = intent; container = c.getInt(containerIndex); info.container = container; info.cellX = c.getInt(cellXIndex); info.cellY = c.getInt(cellYIndex); info.spanX = 1; info.spanY = 1; info.intent.putExtra(ItemInfo.EXTRA_PROFILE, serialNumber); info.isDisabled = disabledState; Intent.ShortcutIconResource iconResource = new Intent.ShortcutIconResource(); iconResource.packageName = c.getString(iconPackageNameIndex); iconResource.resourceName = c.getString(iconDrawableNameIndex); info.iconResource = iconResource; if (isSafeMode && !Utilities.isSystemApp(context, intent)) { info.isDisabled |= ShortcutInfo.FLAG_DISABLED_SAFEMODE; } // check & update map of what's occupied if (!checkItemPlacement(occupied, info)) { itemsToRemove.add(id); break; } switch (container) { case LauncherSettings.Favorites.CONTAINER_DESKTOP: sBgWorkspaceItems.add(info); break; default: break; } sBgItemsIdMap.put(info.id, info); } else { throw new RuntimeException("Unexpected null ShortcutInfo"); } break; case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: // Read all Launcher-specific widget details int appWidgetId = c.getInt(appWidgetIdIndex); String savedProvider = c.getString(appWidgetProviderIndex); id = c.getLong(idIndex); final ComponentName component = ComponentName.unflattenFromString(savedProvider); final int restoreStatus = c.getInt(restoredIndex); final boolean isIdValid = (restoreStatus & LauncherAppWidgetInfo.FLAG_ID_NOT_VALID) == 0; final boolean wasProviderReady = (restoreStatus & LauncherAppWidgetInfo.FLAG_PROVIDER_NOT_READY) == 0; final AppWidgetProviderInfo provider = isIdValid ? widgets.getAppWidgetInfo(appWidgetId) : findAppWidgetProviderInfoWithComponent(context, component); final boolean isProviderReady = isValidProvider(provider); if (!isSafeMode && wasProviderReady && !isProviderReady) { String log = "Deleting widget that isn't installed anymore: " + "id=" + id + " appWidgetId=" + appWidgetId; Log.e(TAG, log); itemsToRemove.add(id); } else { if (isProviderReady) { appWidgetInfo = new LauncherAppWidgetInfo(appWidgetId, provider.provider); int[] minSpan = Launcher.getMinSpanForWidget(context, provider); appWidgetInfo.minSpanX = minSpan[0]; appWidgetInfo.minSpanY = minSpan[1]; int status = restoreStatus; if (!wasProviderReady) { // If provider was not previously ready, update the // status and UI flag. // Id would be valid only if the widget restore broadcast was received. if (isIdValid) { status = LauncherAppWidgetInfo.RESTORE_COMPLETED; } else { status &= ~LauncherAppWidgetInfo.FLAG_PROVIDER_NOT_READY; } } appWidgetInfo.restoreStatus = status; } else { Log.v(TAG, "Widget restore pending id=" + id + " appWidgetId=" + appWidgetId + " status =" + restoreStatus); appWidgetInfo = new LauncherAppWidgetInfo(appWidgetId, component); appWidgetInfo.restoreStatus = restoreStatus; if (!isSafeMode) { Log.d(TAG, "Unrestored widget removed: " + component); itemsToRemove.add(id); continue; } } appWidgetInfo.id = id; appWidgetInfo.cellX = c.getInt(cellXIndex); appWidgetInfo.cellY = c.getInt(cellYIndex); appWidgetInfo.spanX = c.getInt(spanXIndex); appWidgetInfo.spanY = c.getInt(spanYIndex); container = c.getInt(containerIndex); if (container != LauncherSettings.Favorites.CONTAINER_DESKTOP) { Log.e(TAG, "Widget found where container != " + "CONTAINER_DESKTOP nor CONTAINER_HOTSEAT - ignoring!"); continue; } appWidgetInfo.container = c.getInt(containerIndex); // check & update map of what's occupied if (!checkItemPlacement(occupied, appWidgetInfo)) { itemsToRemove.add(id); break; } String providerName = appWidgetInfo.providerName.flattenToString(); if (!providerName.equals(savedProvider) || (appWidgetInfo.restoreStatus != restoreStatus)) { ContentValues values = new ContentValues(); values.put(LauncherSettings.Favorites.APPWIDGET_PROVIDER, providerName); values.put(LauncherSettings.Favorites.RESTORED, appWidgetInfo.restoreStatus); String where = BaseColumns._ID + "= ?"; String[] args = { Long.toString(id) }; contentResolver.update(contentUri, values, where, args); } sBgItemsIdMap.put(appWidgetInfo.id, appWidgetInfo); sBgAppWidgets.add(appWidgetInfo); } break; } } catch (Exception e) { Log.d(TAG, "Desktop items loading interrupted : ", e); } } } finally { if (c != null) { c.close(); } } // Break early if we've stopped loading if (mStopped) { clearSBgDataStructures(); return; } if (itemsToRemove.size() > 0) { ContentProviderClient client = contentResolver.acquireContentProviderClient(contentUri); // Remove dead items for (long id : itemsToRemove) { if (DEBUG_LOADERS) { Log.d(TAG, "Removed id = " + id); } // Don't notify content observers try { client.delete(LauncherSettings.Favorites.getContentUri(id, false), null, null); } catch (RemoteException e) { Log.w(TAG, "Could not remove id = " + id); } } client.release(); } if (!isSdCardReady && !sPendingPackages.isEmpty()) { context.registerReceiver(new AppsAvailabilityCheck(), new IntentFilter(SYSTEM_READY), null, sWorker); } sBgWorkspaceScreenId = loadWorkspaceDb(mContext); // Log to disk Log.d(TAG, "11683562 - sBgWorkspaceScreenId: " + sBgWorkspaceScreenId); if (DEBUG_LOADERS) { Log.d(TAG, "loaded workspace in " + (SystemClock.uptimeMillis() - t) + "ms"); } } } /** Sorts the set of items by workspace (spatially from top to bottom, left to * right) */ private void sortWorkspaceItemsSpatially(ArrayList<ItemInfo> workspaceItems) { final LauncherAppState app = LauncherAppState.getInstance(); final DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); // XXX: review this Collections.sort(workspaceItems, new Comparator<ItemInfo>() { @Override public int compare(ItemInfo lhs, ItemInfo rhs) { int cellCountX = (int) grid.numColumns; int cellCountY = (int) grid.numRows; int screenOffset = cellCountX * cellCountY; long lr = (lhs.container + screenOffset + lhs.cellY * cellCountX + lhs.cellX); long rr = (rhs.container + screenOffset + rhs.cellY * cellCountX + rhs.cellX); return (int) (lr - rr); } }); } private void bindWorkspaceScreens(final Callbacks oldCallbacks) { final Runnable r = new Runnable() { @Override public void run() { Callbacks callbacks = tryGetCallbacks(oldCallbacks); if (callbacks != null) { callbacks.bindDefaultScreen(); } } }; runOnMainThread(r); } private void bindWorkspaceItems(final Callbacks oldCallbacks, final ArrayList<ItemInfo> workspaceItems, final ArrayList<LauncherAppWidgetInfo> appWidgets, ArrayList<Runnable> deferredBindRunnables) { final boolean postOnMainThread = (deferredBindRunnables != null); // Bind the workspace items int N = workspaceItems.size(); for (int i = 0; i < N; i += ITEMS_CHUNK) { final int start = i; final int chunkSize = (i + ITEMS_CHUNK <= N) ? ITEMS_CHUNK : (N - i); final Runnable r = new Runnable() { @Override public void run() { Callbacks callbacks = tryGetCallbacks(oldCallbacks); if (callbacks != null) { callbacks.bindItems(workspaceItems, start, start + chunkSize, false); } } }; if (postOnMainThread) { synchronized (deferredBindRunnables) { deferredBindRunnables.add(r); } } else { runOnMainThread(r); } } // Bind the widgets, one at a time N = appWidgets.size(); for (int i = 0; i < N; i++) { final LauncherAppWidgetInfo widget = appWidgets.get(i); final Runnable r = new Runnable() { public void run() { Callbacks callbacks = tryGetCallbacks(oldCallbacks); if (callbacks != null) { callbacks.bindAppWidget(widget); } } }; if (postOnMainThread) { deferredBindRunnables.add(r); } else { runOnMainThread(r); } } } /** * Binds all loaded data to actual views on the main thread. */ private void bindWorkspace(int synchronizeBindPage) { final long t = SystemClock.uptimeMillis(); Runnable r; // Don't use these two variables in any of the callback runnables. // Otherwise we hold a reference to them. final Callbacks oldCallbacks = mCallbacks.get(); if (oldCallbacks == null) { // This launcher has exited and nobody bothered to tell us. Just bail. Log.w(TAG, "LoaderTask running with no launcher"); return; } // Save a copy of all the bg-thread collections ArrayList<ItemInfo> workspaceItems = new ArrayList<ItemInfo>(); ArrayList<LauncherAppWidgetInfo> appWidgets = new ArrayList<LauncherAppWidgetInfo>(); synchronized (sBgLock) { workspaceItems.addAll(sBgWorkspaceItems); appWidgets.addAll(sBgAppWidgets); } final boolean isLoadingSynchronously = synchronizeBindPage != PagedView.INVALID_RESTORE_PAGE; unbindWorkspaceItemsOnMainThread(); sortWorkspaceItemsSpatially(workspaceItems); // Tell the workspace that we're about to start binding items r = new Runnable() { public void run() { Callbacks callbacks = tryGetCallbacks(oldCallbacks); if (callbacks != null) { callbacks.startBinding(); } } }; runOnMainThread(r); bindWorkspaceScreens(oldCallbacks); // Load items on the current page bindWorkspaceItems(oldCallbacks, workspaceItems, appWidgets, null); // Load all the remaining pages (if we are loading synchronously, we want to defer this // work until after the first render) synchronized (mDeferredBindRunnables) { mDeferredBindRunnables.clear(); } // Tell the workspace that we're done binding items r = new Runnable() { public void run() { Callbacks callbacks = tryGetCallbacks(oldCallbacks); if (callbacks != null) { callbacks.finishBindingItems(); } // If we're profiling, ensure this is the last thing in the queue. if (DEBUG_LOADERS) { Log.d(TAG, "bound workspace in " + (SystemClock.uptimeMillis() - t) + "ms"); } mIsLoadingAndBindingWorkspace = false; } }; if (isLoadingSynchronously) { synchronized (mDeferredBindRunnables) { mDeferredBindRunnables.add(r); } } else { runOnMainThread(r); } } private void loadAndBindAllApps() { if (DEBUG_LOADERS) { Log.d(TAG, "loadAndBindAllApps mAllAppsLoaded=" + mAllAppsLoaded); } if (!mAllAppsLoaded) { loadAllApps(); synchronized (LoaderTask.this) { if (mStopped) { return; } mAllAppsLoaded = true; } } else { onlyBindAllApps(); } } private void onlyBindAllApps() { final Callbacks oldCallbacks = mCallbacks.get(); if (oldCallbacks == null) { // This launcher has exited and nobody bothered to tell us. Just bail. Log.w(TAG, "LoaderTask running with no launcher (onlyBindAllApps)"); return; } // shallow copy @SuppressWarnings("unchecked") final ArrayList<AppInfo> list = (ArrayList<AppInfo>) mBgAllAppsList.data.clone(); Runnable r = new Runnable() { public void run() { final Callbacks callbacks = tryGetCallbacks(oldCallbacks); if (callbacks != null) { callbacks.bindAllApplications(list); } if (DEBUG_LOADERS) { final long t = SystemClock.uptimeMillis(); Log.d(TAG, "bound all " + list.size() + " apps from cache in " + (SystemClock.uptimeMillis() - t) + "ms"); } } }; boolean isRunningOnMainThread = !(sWorkerThread.getThreadId() == Process.myTid()); if (isRunningOnMainThread) { r.run(); } else { mHandler.post(r); } } private void loadAllApps() { final long loadTime = DEBUG_LOADERS ? SystemClock.uptimeMillis() : 0; final Callbacks oldCallbacks = mCallbacks.get(); if (oldCallbacks == null) { // This launcher has exited and nobody bothered to tell us. Just bail. Log.w(TAG, "LoaderTask running with no launcher (loadAllApps)"); return; } final List<UserHandleCompat> profiles = mUserManager.getUserProfiles(); // Clear the list of apps mBgAllAppsList.clear(); for (UserHandleCompat user : profiles) { // Query for the set of apps final long qiaTime = DEBUG_LOADERS ? SystemClock.uptimeMillis() : 0; List<LauncherActivityInfoCompat> apps = mLauncherApps.getActivityList(null, user); if (DEBUG_LOADERS) { Log.d(TAG, "getActivityList took " + (SystemClock.uptimeMillis() - qiaTime) + "ms for user " + user); Log.d(TAG, "getActivityList got " + apps.size() + " apps for user " + user); } // Fail if we don't have any apps if ((apps == null || apps.isEmpty()) && user.equals(UserHandleCompat.myUserHandle())) { return; } // Sort the applications by name final long sortTime = DEBUG_LOADERS ? SystemClock.uptimeMillis() : 0; Collections.sort(apps, new LauncherModel.ShortcutNameComparator(mLabelCache)); if (DEBUG_LOADERS) { Log.d(TAG, "sort took " + (SystemClock.uptimeMillis() - sortTime) + "ms"); } // Create the ApplicationInfos for (int i = 0; i < apps.size(); i++) { LauncherActivityInfoCompat app = apps.get(i); // This builds the icon bitmaps. mBgAllAppsList.add(new AppInfo(mContext, app, user, mIconCache, mLabelCache)); } } // Huh? Shouldn't this be inside the Runnable below? final ArrayList<AppInfo> added = mBgAllAppsList.added; mBgAllAppsList.added = new ArrayList<AppInfo>(); // Post callback on main thread mHandler.post(new Runnable() { public void run() { final Callbacks callbacks = tryGetCallbacks(oldCallbacks); if (callbacks != null) { callbacks.bindAllApplications(added); final long bindTime = SystemClock.uptimeMillis(); if (DEBUG_LOADERS) { Log.d(TAG, "bound " + added.size() + " apps in " + (SystemClock.uptimeMillis() - bindTime) + "ms"); } } else { Log.i(TAG, "not binding apps: no Launcher activity"); } } }); if (DEBUG_LOADERS) { Log.d(TAG, "Icons processed in " + (SystemClock.uptimeMillis() - loadTime) + "ms"); } } } public void rebindItemsOnIconThemeChange() { if (mCallbacks.get() != null) { final ArrayList<AppInfo> allApps = getAllApps(); runOnWorkerThread(new Runnable() { @Override public void run() { // update workspace ArrayList<ShortcutInfo> updateShortcuts = new ArrayList<>(); for (ItemInfo info : sBgWorkspaceItems) { if (info instanceof ShortcutInfo) { ShortcutInfo si = (ShortcutInfo) info; updateShortcuts.add(si); // cache the new icon si.getIcon(mIconCache); } } // update all apps mCallbacks.get().bindShortcutsChanged(updateShortcuts, null, UserHandleCompat.myUserHandle()); for (AppInfo info : allApps) { // cache the new icon mIconCache.getAppIcon(info); // save updated items updateItemInDatabase(mApp.getContext(), info); } // bind all apps on main thread runOnMainThread(new Runnable() { @Override public void run() { mCallbacks.get().bindAppsUpdated(allApps); } }); } }); } } void enqueuePackageUpdated(PackageUpdatedTask task) { sWorker.post(task); } private class AppsAvailabilityCheck extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { synchronized (sBgLock) { final LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(mApp.getContext()); final PackageManager manager = context.getPackageManager(); final ArrayList<String> packagesRemoved = new ArrayList<String>(); final ArrayList<String> packagesUnavailable = new ArrayList<String>(); for (Entry<UserHandleCompat, HashSet<String>> entry : sPendingPackages.entrySet()) { UserHandleCompat user = entry.getKey(); packagesRemoved.clear(); packagesUnavailable.clear(); for (String pkg : entry.getValue()) { if (!launcherApps.isPackageEnabledForProfile(pkg, user)) { boolean packageOnSdcard = launcherApps.isAppEnabled(manager, pkg, PackageManager.GET_UNINSTALLED_PACKAGES); if (packageOnSdcard) { Log.d(TAG, "Package found on sd-card: " + pkg); packagesUnavailable.add(pkg); } else { Log.d(TAG, "Package not found: " + pkg); packagesRemoved.add(pkg); } } } if (!packagesRemoved.isEmpty()) { enqueuePackageUpdated(new PackageUpdatedTask(PackageUpdatedTask.OP_REMOVE, packagesRemoved.toArray(new String[packagesRemoved.size()]), user)); } if (!packagesUnavailable.isEmpty()) { enqueuePackageUpdated(new PackageUpdatedTask(PackageUpdatedTask.OP_UNAVAILABLE, packagesUnavailable.toArray(new String[packagesUnavailable.size()]), user)); } } sPendingPackages.clear(); } } } private class PackageUpdatedTask implements Runnable { int mOp; String[] mPackages; UserHandleCompat mUser; public static final int OP_NONE = 0; public static final int OP_ADD = 1; public static final int OP_UPDATE = 2; public static final int OP_REMOVE = 3; // uninstalled public static final int OP_UNAVAILABLE = 4; // external media unmounted public PackageUpdatedTask(int op, String[] packages, UserHandleCompat user) { mOp = op; mPackages = packages; mUser = user; } public void run() { final Context context = mApp.getContext(); final String[] packages = mPackages; switch (mOp) { case OP_ADD: for (String aPackage : packages) { if (DEBUG_LOADERS) Log.d(TAG, "mAllAppsList.addPackage " + aPackage); mBgAllAppsList.addPackage(context, aPackage, mUser); } // refresh Icons from current theme mIconCache.loadIconPackDrawables(false); break; case OP_UPDATE: for (String aPackage : packages) { if (DEBUG_LOADERS) Log.d(TAG, "mAllAppsList.updatePackage " + aPackage); mBgAllAppsList.updatePackage(context, aPackage, mUser); WidgetPreviewLoader.removePackageFromDb(mApp.getWidgetPreviewCacheDb(), aPackage); } // refresh Icons from current theme mIconCache.loadIconPackDrawables(false); break; case OP_REMOVE: // Remove the packageName for the set of auto-installed shortcuts. This // will ensure that the shortcut when the app is installed again. // Fall through case OP_UNAVAILABLE: boolean clearCache = mOp == OP_REMOVE; for (String aPackage : packages) { if (DEBUG_LOADERS) Log.d(TAG, "mAllAppsList.removePackage " + aPackage); mBgAllAppsList.removePackage(aPackage, mUser, clearCache); WidgetPreviewLoader.removePackageFromDb(mApp.getWidgetPreviewCacheDb(), aPackage); } break; } ArrayList<AppInfo> added = null; ArrayList<AppInfo> modified = null; final ArrayList<AppInfo> removedApps = new ArrayList<AppInfo>(); if (mBgAllAppsList.added.size() > 0) { added = new ArrayList<AppInfo>(mBgAllAppsList.added); mBgAllAppsList.added.clear(); } if (mBgAllAppsList.modified.size() > 0) { modified = new ArrayList<AppInfo>(mBgAllAppsList.modified); mBgAllAppsList.modified.clear(); } if (mBgAllAppsList.removed.size() > 0) { removedApps.addAll(mBgAllAppsList.removed); mBgAllAppsList.removed.clear(); } final Callbacks callbacks = getCallback(); if (callbacks == null) { Log.w(TAG, "Nobody to tell about the new app. Launcher is probably loading."); return; } final ArrayMap<ComponentName, AppInfo> addedOrUpdatedApps = new ArrayMap<>(); if (added != null) { // Ensure that we add all the workspace applications to the db addAppsToAllApps(context, added); for (AppInfo ai : added) { addedOrUpdatedApps.put(ai.componentName, ai); } } if (modified != null) { final ArrayList<AppInfo> modifiedFinal = modified; for (AppInfo ai : modified) { addedOrUpdatedApps.put(ai.componentName, ai); } mHandler.post(new Runnable() { public void run() { Callbacks cb = getCallback(); if (callbacks == cb) { callbacks.bindAppsUpdated(modifiedFinal); } } }); } // Update shortcut infos if (mOp == OP_ADD || mOp == OP_UPDATE) { final ArrayList<ShortcutInfo> updatedShortcuts = new ArrayList<ShortcutInfo>(); final ArrayList<ShortcutInfo> removedShortcuts = new ArrayList<ShortcutInfo>(); final ArrayList<LauncherAppWidgetInfo> widgets = new ArrayList<LauncherAppWidgetInfo>(); HashSet<String> packageSet = new HashSet<String>(Arrays.asList(packages)); synchronized (sBgLock) { for (ItemInfo info : sBgItemsIdMap.values()) { if (info instanceof ShortcutInfo && mUser.equals(info.user)) { ShortcutInfo si = (ShortcutInfo) info; boolean infoUpdated = false; boolean shortcutUpdated = false; ComponentName cn = si.getTargetComponent(); if (cn != null && packageSet.contains(cn.getPackageName())) { AppInfo appInfo = addedOrUpdatedApps.get(cn); if (appInfo != null && Intent.ACTION_MAIN.equals(si.intent.getAction()) && si.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION) { si.getIcon(mIconCache); si.title = appInfo.title.toString(); si.contentDescription = appInfo.contentDescription; infoUpdated = true; } if ((si.isDisabled & ShortcutInfo.FLAG_DISABLED_NOT_AVAILABLE) != 0) { // Since package was just updated, the target must be available now. si.isDisabled &= ~ShortcutInfo.FLAG_DISABLED_NOT_AVAILABLE; shortcutUpdated = true; } } if (infoUpdated || shortcutUpdated) { updatedShortcuts.add(si); } if (infoUpdated) { updateItemInDatabase(context, si); } } else if (info instanceof LauncherAppWidgetInfo) { LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo) info; if (mUser.equals(widgetInfo.user) && widgetInfo.hasRestoreFlag(LauncherAppWidgetInfo.FLAG_PROVIDER_NOT_READY) && packageSet.contains(widgetInfo.providerName.getPackageName())) { widgetInfo.restoreStatus &= ~LauncherAppWidgetInfo.FLAG_PROVIDER_NOT_READY; widgets.add(widgetInfo); updateItemInDatabase(context, widgetInfo); } } } } if (!updatedShortcuts.isEmpty() || !removedShortcuts.isEmpty()) { mHandler.post(new Runnable() { public void run() { Callbacks cb = getCallback(); if (callbacks == cb) { callbacks.bindShortcutsChanged(updatedShortcuts, removedShortcuts, mUser); } } }); if (!removedShortcuts.isEmpty()) { deleteItemsFromDatabase(context, removedShortcuts); } } if (!widgets.isEmpty()) { mHandler.post(new Runnable() { public void run() { Callbacks cb = getCallback(); if (callbacks == cb) { callbacks.bindWidgetsRestored(widgets); } } }); } } final ArrayList<String> removedPackageNames = new ArrayList<String>(); if (mOp == OP_REMOVE || mOp == OP_UNAVAILABLE) { // Mark all packages in the broadcast to be removed removedPackageNames.addAll(Arrays.asList(packages)); } else if (mOp == OP_UPDATE) { // Mark disabled packages in the broadcast to be removed for (String aPackage : packages) { if (isPackageDisabled(context, aPackage, mUser)) { removedPackageNames.add(aPackage); } } } if (!removedPackageNames.isEmpty() || !removedApps.isEmpty()) { final int removeReason; if (mOp == OP_UNAVAILABLE) { removeReason = ShortcutInfo.FLAG_DISABLED_NOT_AVAILABLE; } else { // Remove all the components associated with this package for (String pn : removedPackageNames) { deletePackageFromDatabase(context, pn, mUser); } // Remove all the specific components for (AppInfo a : removedApps) { ArrayList<ItemInfo> infos = getItemInfoForComponentName(a.componentName, mUser); deleteItemsFromDatabase(context, infos); } removeReason = 0; } // Call the components-removed callback mHandler.post(new Runnable() { public void run() { Callbacks cb = getCallback(); if (callbacks == cb) { callbacks.bindComponentsRemoved(removedPackageNames, removedApps, mUser, removeReason); } } }); } final ArrayList<Object> widgets = getSortedWidgets(context); mHandler.post(new Runnable() { @Override public void run() { Callbacks cb = getCallback(); if (callbacks == cb) { callbacks.bindPackagesUpdated(widgets); } } }); } } // Returns a list of ResolveInfos/AppWindowInfos in sorted order public static ArrayList<Object> getSortedWidgets(Context context) { final ArrayList<Object> widgetsAndShortcuts = new ArrayList<Object>(); widgetsAndShortcuts.addAll(AppWidgetManagerCompat.getInstance(context).getAllProviders()); Collections.sort(widgetsAndShortcuts, new WidgetNameComparator(context)); return widgetsAndShortcuts; } private static boolean isPackageDisabled(Context context, String packageName, UserHandleCompat user) { final LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(context); return !launcherApps.isPackageEnabledForProfile(packageName, user); } static Intent getMarketIntent(String packageName) { return new Intent(Intent.ACTION_VIEW).setData(new Uri.Builder().scheme("market").authority("details") .appendQueryParameter("id", packageName).build()); } /** * Make an ShortcutInfo object for a shortcut that is an application. */ public ShortcutInfo getShortcutInfo(Intent intent, UserHandleCompat user, int titleIndex, Map<Object, CharSequence> labelCache, boolean allowMissingTarget) { if (user == null) { Log.d(TAG, "Null user found in getShortcutInfo"); return null; } ComponentName componentName = intent.getComponent(); if (componentName == null) { Log.d(TAG, "Missing component found in getShortcutInfo"); return null; } Intent newIntent = new Intent(intent.getAction(), null); newIntent.addCategory(Intent.CATEGORY_LAUNCHER); newIntent.setComponent(componentName); LauncherActivityInfoCompat lai = mLauncherApps.resolveActivity(newIntent, user); if ((lai == null) && !allowMissingTarget) { Log.d(TAG, "Missing activity found in getShortcutInfo: " + componentName); return null; } final ShortcutInfo info = new ShortcutInfo(); // From the cache. if (labelCache != null) { info.title = labelCache.get(componentName); } // from the resource if (info.title == null && lai != null) { info.title = lai.getLabel(); if (labelCache != null) { labelCache.put(componentName, info.title); } } // from the db if (info.title == null) { if (mApp.getContext() != null) { info.title = mApp.getContext().getString(titleIndex); } } // fall back to the class name of the activity if (info.title == null) { info.title = componentName.getClassName(); } info.itemType = LauncherSettings.Favorites.ITEM_TYPE_APPLICATION; info.user = user; info.contentDescription = mUserManager.getBadgedLabelForUser(info.title.toString(), info.user); return info; } static ArrayList<ItemInfo> filterItemInfos(Collection<ItemInfo> infos, ItemInfoFilter f) { HashSet<ItemInfo> filtered = new HashSet<ItemInfo>(); for (ItemInfo i : infos) { if (i instanceof ShortcutInfo) { ShortcutInfo info = (ShortcutInfo) i; ComponentName cn = info.getTargetComponent(); if (cn != null && f.filterItem(null, info, cn)) { filtered.add(info); } } else if (i instanceof LauncherAppWidgetInfo) { LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) i; ComponentName cn = info.providerName; if (cn != null && f.filterItem(null, info, cn)) { filtered.add(info); } } } return new ArrayList<ItemInfo>(filtered); } private ArrayList<ItemInfo> getItemInfoForComponentName(final ComponentName cname, final UserHandleCompat user) { ItemInfoFilter filter = new ItemInfoFilter() { @Override public boolean filterItem(ItemInfo parent, ItemInfo info, ComponentName cn) { if (info.user == null) { return cn.equals(cname); } else { return cn.equals(cname) && info.user.equals(user); } } }; return filterItemInfos(sBgItemsIdMap.values(), filter); } /** * Make an ShortcutInfo object for a shortcut that isn't an application. */ private ShortcutInfo getShortcutInfo(Cursor c, int titleIndex) { final ShortcutInfo info = new ShortcutInfo(); // Non-app shortcuts are only supported for current user. info.user = UserHandleCompat.myUserHandle(); info.itemType = LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT; info.title = c.getString(titleIndex); return info; } /** * Attempts to find an AppWidgetProviderInfo that matches the given component. */ static AppWidgetProviderInfo findAppWidgetProviderInfoWithComponent(Context context, ComponentName component) { List<AppWidgetProviderInfo> widgets = AppWidgetManager.getInstance(context).getInstalledProviders(); for (AppWidgetProviderInfo info : widgets) { if (info.provider.equals(component)) { return info; } } return null; } ShortcutInfo infoFromShortcutIntent(Context context, Intent data) { Intent intent = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_INTENT); String name = data.getStringExtra(Intent.EXTRA_SHORTCUT_NAME); if (intent == null) { // If the intent is null, we can't construct a valid ShortcutInfo, so we return null Log.e(TAG, "Can't construct ShorcutInfo with null intent"); return null; } final ShortcutInfo info = new ShortcutInfo(); // Only support intents for current user for now. Intents sent from other // users wouldn't get here without intent forwarding anyway. info.user = UserHandleCompat.myUserHandle(); info.title = name; info.contentDescription = mUserManager.getBadgedLabelForUser(info.title.toString(), info.user); info.intent = intent; // cache the icon for shortcut mIconCache.getAppIcon(info); return info; } public static Comparator<AppInfo> getAppNameComparator() { final Collator collator = Collator.getInstance(); return new Comparator<AppInfo>() { public final int compare(AppInfo a, AppInfo b) { if (a.user.equals(b.user)) { int result = a.componentName.compareTo(b.componentName); if (a.title == null || b.title == null) { return result; } int titleCompareResult = collator.compare(a.title.toString().trim(), b.title.toString().trim()); if (titleCompareResult != 0) { result = titleCompareResult; } return result; } else { // TODO Need to figure out rules for sorting // profiles, this puts work second. return a.user.toString().compareTo(b.user.toString()); } } }; } public static class ShortcutNameComparator implements Comparator<LauncherActivityInfoCompat> { private Collator mCollator; private Map<Object, CharSequence> mLabelCache; ShortcutNameComparator(Map<Object, CharSequence> labelCache) { mLabelCache = labelCache; mCollator = Collator.getInstance(); } public final int compare(LauncherActivityInfoCompat a, LauncherActivityInfoCompat b) { CharSequence labelA, labelB; ComponentName keyA = a.getComponentName(); ComponentName keyB = b.getComponentName(); labelA = mLabelCache.get(keyA); if (labelA == null) { labelA = a.getLabel().toString().trim(); mLabelCache.put(keyA, labelA); } labelB = mLabelCache.get(keyB); if (labelB == null) { labelB = b.getLabel().toString().trim(); mLabelCache.put(keyB, labelB); } return mCollator.compare(labelA, labelB); } } public static class WidgetNameComparator implements Comparator<Object> { private final AppWidgetManagerCompat mManager; private final PackageManager mPackageManager; private final ArrayMap<Object, String> mLabelCache; private final Collator mCollator; WidgetNameComparator(Context context) { mManager = AppWidgetManagerCompat.getInstance(context); mPackageManager = context.getPackageManager(); mLabelCache = new ArrayMap<>(); mCollator = Collator.getInstance(); } public final int compare(Object a, Object b) { String labelA, labelB; if (mLabelCache.containsKey(a)) { labelA = mLabelCache.get(a); } else { labelA = (a instanceof AppWidgetProviderInfo) ? mManager.loadLabel((AppWidgetProviderInfo) a) : ((ResolveInfo) a).loadLabel(mPackageManager).toString().trim(); mLabelCache.put(a, labelA); } if (mLabelCache.containsKey(b)) { labelB = mLabelCache.get(b); } else { labelB = (b instanceof AppWidgetProviderInfo) ? mManager.loadLabel((AppWidgetProviderInfo) b) : ((ResolveInfo) b).loadLabel(mPackageManager).toString().trim(); mLabelCache.put(b, labelB); } return mCollator.compare(labelA, labelB); } } static boolean isValidProvider(AppWidgetProviderInfo provider) { return (provider != null) && (provider.provider != null) && (provider.provider.getPackageName() != null); } public Callbacks getCallback() { return mCallbacks != null ? mCallbacks.get() : null; } public void bindPackagesAgain() { Callbacks cb = getCallback(); if (cb != null) { cb.bindPackagesUpdated(getSortedWidgets(mApp.getContext())); } } }