/*
* Copyright (C) 2008 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 cn.walcl.ulauncher;
import java.lang.ref.WeakReference;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import cn.walcl.ulauncher.appdb.AppDB;
import cn.walcl.ulauncher.settings.LauncherSettings;
import cn.walcl.ulauncher.settings.LauncherSettings.Favorites;
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.Intent.ShortcutIconResource;
import android.content.pm.PackageManager;
import android.content.pm.ProviderInfo;
import android.content.res.Resources;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.Parcelable;
import android.os.Process;
import android.os.RemoteException;
import android.util.Log;
/**
* 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 {
static final String TAG = "Launcher.Model";
private static final int ITEMS_CHUNK = 6; // batch size for the workspace icons
private final Object mLock = new Object();
private final DeferredHandler mHandler = new DeferredHandler();
private LoaderTask mLoaderTask;
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;
private WeakReference<Callbacks> mCallbacks;
private final AllAppsList mAllAppsList; // only access in worker thread
private final IconCache mIconCache;
final ArrayList<ItemInfo> mItems = new ArrayList<ItemInfo>();
final ArrayList<IconItemInfo> mAdditionalDrawerItems = new ArrayList<IconItemInfo>();
final ArrayList<LauncherAppWidgetInfo> mAppWidgets = new ArrayList<LauncherAppWidgetInfo>();
final HashMap<Long, FolderInfo> mFolders = new HashMap<Long, FolderInfo>();
private final Bitmap mDefaultIcon;
public interface Callbacks {
public boolean setLoadOnResume();
public int getCurrentWorkspaceScreen();
public void startBinding();
public void bindItems(ArrayList<ItemInfo> shortcuts, int start, int end);
public void bindFolders(HashMap<Long,FolderInfo> folders);
public void finishBindingItems();
public void bindAppWidget(LauncherAppWidgetInfo info);
public void bindAllApplications(ArrayList<ShortcutInfo> apps, ArrayList<IconItemInfo> otherItems);
public void bindAppsAdded(ArrayList<? extends IconItemInfo> apps);
public void bindAppsUpdated(ArrayList<ShortcutInfo> apps);
public void bindAppsRemoved(ArrayList<ShortcutInfo> apps, boolean permanent);
public boolean isAllAppsVisible();
}
LauncherModel(LauncherApplication app, IconCache iconCache) {
mAllAppsList = new AllAppsList(iconCache);
mIconCache = iconCache;
mDefaultIcon = Utilities.createIconBitmap(
app.getPackageManager().getDefaultActivityIcon(), app);
}
public Bitmap getFallbackIcon() {
return Bitmap.createBitmap(mDefaultIcon);
}
/**
* Adds an item to the DB if it was not created previously, or move it to a new
* <container, screen, cellX, cellY>
*/
void addOrMoveItemInDatabase(Context context, ItemInfo item, long container,
int screen, int cellX, int cellY) {
if (item.container == ItemInfo.NO_ID) {
// From all apps
addItemToDatabase(context, item, container, screen, cellX, cellY, false);
} else {
// From somewhere else
moveItemInDatabase(context, item, container, screen, cellX, cellY);
}
}
/**
* Move an item in the DB to a new <container, screen, cellX, cellY>
*/
static void moveItemInDatabase(Context context, ItemInfo item, long container, int screen,
int cellX, int cellY) {
item.container = container;
item.screen = screen;
item.cellX = cellX;
item.cellY = cellY;
final Uri uri = LauncherSettings.Favorites.getContentUri(item.id, false);
final ContentValues values = new ContentValues();
final ContentResolver cr = context.getContentResolver();
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.SCREEN, item.screen);
sWorker.post(new Runnable() {
public void run() {
cr.update(uri, values, null, null);
}
});
}
/**
* Returns true if the shortcuts already exists in the database.
* we identify a shortcut by its title and intent.
*/
static boolean shortcutExists(Context context, String title, Intent intent) {
final ContentResolver cr = context.getContentResolver();
Cursor c = cr.query(LauncherSettings.Favorites.CONTENT_URI,
new String[] { "title", "intent" }, "title=? and intent=?",
new String[] { title, intent.toUri(0) }, null);
boolean result = false;
try {
result = c.moveToFirst();
} finally {
c.close();
}
return result;
}
/**
* Find a folder in the db, creating the FolderInfo if necessary, and adding it to folderList.
*/
FolderInfo getFolderById(Context context, HashMap<Long,FolderInfo> folderList, long id) {
final ContentResolver cr = context.getContentResolver();
Cursor c = cr.query(LauncherSettings.Favorites.CONTENT_URI, null,
"_id=? and (itemType=? or itemType=?)",
new String[] { String.valueOf(id),
String.valueOf(LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER),
String.valueOf(LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER) }, null);
try {
if (c.moveToFirst()) {
final int itemTypeIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.ITEM_TYPE);
final int titleIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.TITLE);
final int containerIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.CONTAINER);
final int screenIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.SCREEN);
final int cellXIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.CELLX);
final int cellYIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.CELLY);
FolderInfo folderInfo = null;
switch (c.getInt(itemTypeIndex)) {
case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER:
folderInfo = findOrMakeUserFolder(folderList, id);
break;
case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER:
folderInfo = findOrMakeLiveFolder(folderList, id);
break;
}
folderInfo.setTitle(c.getString(titleIndex));
folderInfo.id = id;
folderInfo.container = c.getInt(containerIndex);
folderInfo.screen = c.getInt(screenIndex);
folderInfo.cellX = c.getInt(cellXIndex);
folderInfo.cellY = c.getInt(cellYIndex);
return folderInfo;
}
} finally {
c.close();
}
return null;
}
/**
* 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.
*/
void addItemToDatabase(Context context, ItemInfo item, long container,
int screen, int cellX, int cellY, boolean notify) {
item.container = container;
item.screen = screen;
item.cellX = cellX;
item.cellY = cellY;
final ContentValues values = new ContentValues();
final ContentResolver cr = context.getContentResolver();
item.onAddToDatabase(values);
Uri result = cr.insert(notify ? LauncherSettings.Favorites.CONTENT_URI :
LauncherSettings.Favorites.CONTENT_URI_NO_NOTIFICATION, values);
if (result != null) {
item.id = Integer.parseInt(result.getPathSegments().get(1));
}
if (item instanceof IconItemInfo) {
IconItemInfo iii = (IconItemInfo)item;
if (container == Favorites.CONTAINER_DRAWER)
mAdditionalDrawerItems.add(iii);
else if (container == Favorites.CONTAINER_DESKTOP)
mItems.add(iii);
}
}
/**
* Update an item to the database in a specified container.
*/
static void updateItemInDatabase(Context context, ItemInfo item) {
final ContentValues values = new ContentValues();
final ContentResolver cr = context.getContentResolver();
item.onAddToDatabase(values);
cr.update(LauncherSettings.Favorites.getContentUri(item.id, false), values, null, null);
}
/**
* Removes the specified item from the database
* @param context
* @param item
*/
void deleteItemFromDatabase(Context context, ItemInfo item) {
final ContentResolver cr = context.getContentResolver();
final Uri uriToDelete = LauncherSettings.Favorites.getContentUri(item.id, false);
sWorker.post(new Runnable() {
public void run() {
cr.delete(uriToDelete, null, null);
}
});
if (mItems.contains(item))
mItems.remove(item);
if (mAdditionalDrawerItems.contains(item))
mAdditionalDrawerItems.remove(item);
}
/**
* Remove the contents of the specified folder from the database
*/
static void deleteUserFolderContentsFromDatabase(Context context, UserFolderInfo info) {
final ContentResolver cr = context.getContentResolver();
cr.delete(LauncherSettings.Favorites.getContentUri(info.id, false), null, null);
cr.delete(LauncherSettings.Favorites.CONTENT_URI,
LauncherSettings.Favorites.CONTAINER + "=" + info.id, null);
}
public ItemInfo getItemInfoById(long id) {
for(ItemInfo ii : mItems) {
if (ii.id == id)
return ii;
}
for(IconItemInfo ii : mAdditionalDrawerItems) {
if (ii.id == id)
return ii;
}
return null;
}
/**
* Set this as the current Launcher activity object for the loader.
*/
public void initialize(Callbacks callbacks) {
synchronized (mLock) {
mCallbacks = new WeakReference<Callbacks>(callbacks);
}
}
void enqueuePackageUpdated(PackageUpdatedTask task) {
sWorker.post(task);
}
/**
* Call from the handler for ACTION_PACKAGE_ADDED, ACTION_PACKAGE_REMOVED and
* ACTION_PACKAGE_CHANGED.
*/
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
if (AppDB.INTENT_DB_CHANGED.equals(action)) {
if (intent.hasExtra(AppDB.EXTRA_ADDED)) {
long[] added = intent.getLongArrayExtra(AppDB.EXTRA_ADDED);
if (added != null && added.length > 0) {
PackageUpdatedTask put = new PackageUpdatedTask(PackageUpdatedTask.OP_ADD, added, context);
enqueuePackageUpdated(put);
}
}
if (intent.hasExtra(AppDB.EXTRA_DELETED_COMPONENT_NAMES)) {
String[] removed = intent.getStringArrayExtra(AppDB.EXTRA_DELETED_COMPONENT_NAMES);
if (removed != null) {
PackageUpdatedTask put = new PackageUpdatedTask(PackageUpdatedTask.OP_REMOVE_CNAMES, removed, context);
enqueuePackageUpdated(put);
}
}
if (intent.hasExtra(AppDB.EXTRA_DELETED_PACKAGE)) {
String removed = intent.getStringExtra(AppDB.EXTRA_DELETED_PACKAGE);
if (removed != null) {
PackageUpdatedTask put = new PackageUpdatedTask(PackageUpdatedTask.OP_REMOVE_PACKAGE, removed, context);
enqueuePackageUpdated(put);
}
}
if (intent.hasExtra(AppDB.EXTRA_UPDATED)) {
long[] updated = intent.getLongArrayExtra(AppDB.EXTRA_UPDATED);
if (updated != null && updated.length > 0) {
PackageUpdatedTask put = new PackageUpdatedTask(PackageUpdatedTask.OP_UPDATE, updated, context);
enqueuePackageUpdated(put);
}
}
}
// TODO_BOOMBULER
/* else if (Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE.equals(action)) {
// First, schedule to add these apps back in.
String[] packages = intent.getStringArrayExtra(Intent.EXTRA_CHANGED_PACKAGE_LIST);
enqueuePackageUpdated(new PackageUpdatedTask(PackageUpdatedTask.OP_ADD, packages));
// Then, rebind everything.
boolean runLoader = true;
if (mCallbacks != null) {
Callbacks callbacks = mCallbacks.get();
if (callbacks != null) {
// If they're paused, we can skip loading, because they'll do it again anyway
if (callbacks.setLoadOnResume()) {
runLoader = false;
}
}
}
if (runLoader) {
startLoader(mApp, false);
}
} else if (Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE.equals(action)) {
String[] packages = intent.getStringArrayExtra(Intent.EXTRA_CHANGED_PACKAGE_LIST);
enqueuePackageUpdated(new PackageUpdatedTask(
PackageUpdatedTask.OP_UNAVAILABLE, packages));
}*/
}
private class PackageUpdatedTask implements Runnable {
int mOp;
long[] mAppIds;
String[] mComponentNames;
String mPackage;
Context mContext;
public static final int OP_ADD = 1;
public static final int OP_UPDATE = 2;
public static final int OP_REMOVE_CNAMES = 3;
public static final int OP_REMOVE_PACKAGE = 4;
public static final int OP_UNAVAILABLE = 5; // external media unmounted
public PackageUpdatedTask(int op, long[] appIds, Context context) {
mOp = op;
mAppIds = appIds;
mContext = context;
}
public PackageUpdatedTask(int op, String[] componentNames, Context context) {
mOp = op;
mComponentNames = componentNames;
mContext = context;
}
public PackageUpdatedTask(int op, String packageName, Context context) {
mOp = op;
mPackage = packageName;
mContext = context;
}
public void run() {
AppDB appDB = new AppDB(mContext, mIconCache);
switch (mOp) {
case OP_ADD:
List<ShortcutInfo> newApps = appDB.getApps(mAppIds);
for (ShortcutInfo info : newApps) {
mAllAppsList.add(info);
}
break;
case OP_REMOVE_CNAMES: {
mAllAppsList.removeComponentNames(mComponentNames);
}
case OP_REMOVE_PACKAGE: {
mAllAppsList.removePackage(mPackage);
}
case OP_UPDATE:
List<ShortcutInfo> updated = appDB.getApps(mAppIds);
mAllAppsList.updateFromShortcuts(updated);
break;
/*
case OP_UNAVAILABLE:
for (int i=0; i<N; i++) {
mAllAppsList.removePackage(packages[i]);
}
break;*/
}
ArrayList<ShortcutInfo> added = null;
ArrayList<ShortcutInfo> removed = null;
ArrayList<ShortcutInfo> modified = null;
if (mAllAppsList.added.size() > 0) {
added = mAllAppsList.added;
mAllAppsList.added = new ArrayList<ShortcutInfo>();
}
if (mAllAppsList.removed.size() > 0) {
removed = mAllAppsList.removed;
mAllAppsList.removed = new ArrayList<ShortcutInfo>();
for (ShortcutInfo info: removed) {
mIconCache.remove(info.intent.getComponent());
}
}
if (mAllAppsList.modified.size() > 0) {
modified = mAllAppsList.modified;
mAllAppsList.modified = new ArrayList<ShortcutInfo>();
}
final Callbacks callbacks = mCallbacks != null ? mCallbacks.get() : null;
if (callbacks == null) {
Log.w(TAG, "Nobody to tell about the new app. Launcher is probably loading.");
return;
}
if (added != null) {
final ArrayList<ShortcutInfo> addedFinal = added;
mHandler.post(new Runnable() {
public void run() {
if (callbacks == mCallbacks.get()) {
callbacks.bindAppsAdded(addedFinal);
}
}
});
}
if (modified != null) {
final ArrayList<ShortcutInfo> modifiedFinal = modified;
mHandler.post(new Runnable() {
public void run() {
if (callbacks == mCallbacks.get()) {
callbacks.bindAppsUpdated(modifiedFinal);
}
}
});
}
if (removed != null) {
final boolean permanent = mOp != OP_UNAVAILABLE;
final ArrayList<ShortcutInfo> removedFinal = removed;
mHandler.post(new Runnable() {
public void run() {
if (callbacks == mCallbacks.get()) {
callbacks.bindAppsRemoved(removedFinal, permanent);
}
}
});
}
}
}
public void startLoader(Context context, boolean isLaunching) {
synchronized (mLock) {
// 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.
LoaderTask oldTask = mLoaderTask;
if (oldTask != null) {
if (oldTask.isLaunching()) {
// don't downgrade isLaunching if we're already running
isLaunching = true;
}
oldTask.stopLocked();
}
mLoaderTask = new LoaderTask(context, isLaunching);
sWorker.post(mLoaderTask);
}
}
}
public void stopLoader() {
synchronized (mLock) {
if (mLoaderTask != null) {
mLoaderTask.stopLocked();
}
}
}
/**
* 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 final boolean mIsLaunching;
private boolean mStopped;
private boolean mLoadAndBindStepFinished;
LoaderTask(Context context, boolean isLaunching) {
mContext = context;
mIsLaunching = isLaunching;
}
boolean isLaunching() {
return mIsLaunching;
}
private void loadAndBindWorkspace() {
// Load the workspace
// For now, just always reload the workspace. It's ~100 ms vs. the
// binding which takes many hundreds of ms.
// We can reconsider.
if (!mWorkspaceLoaded) {
loadWorkspace();
if (mStopped) {
return;
}
mWorkspaceLoaded = true;
}
// Bind the workspace
bindWorkspace();
}
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) {
mHandler.postIdle(new Runnable() {
public void run() {
synchronized (LoaderTask.this) {
mLoadAndBindStepFinished = true;
LoaderTask.this.notify();
}
}
});
while (!mStopped && !mLoadAndBindStepFinished) {
try {
this.wait();
} catch (InterruptedException ex) {
// Ignore
}
}
}
}
public void run() {
// 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).
final Callbacks cbk = mCallbacks.get();
final boolean loadWorkspaceFirst = cbk != null ? (!cbk.isAllAppsVisible()) : true;
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) {
android.os.Process.setThreadPriority(mIsLaunching
? Process.THREAD_PRIORITY_DEFAULT : Process.THREAD_PRIORITY_BACKGROUND);
}
if (loadWorkspaceFirst) {
loadAndBindWorkspace();
} else {
loadAndBindAllApps();
}
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) {
android.os.Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND);
}
}
waitForIdle();
// second step
if (loadWorkspaceFirst) {
loadAndBindAllApps();
} else {
loadAndBindWorkspace();
}
}
// 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;
}
}
// Trigger a gc to try to clean up after the stuff is done, since the
// renderscript allocations aren't charged to the java heap.
if (mStopped) {
mHandler.post(new Runnable() {
public void run() {
System.gc();
}
});
} else {
mHandler.postIdle(new Runnable() {
public void run() {
System.gc();
}
});
}
}
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) {
return true;
}
for (int x = item.cellX; x < (item.cellX+item.spanX); x++) {
for (int y = item.cellY; y < (item.cellY+item.spanY); y++) {
if (occupied[item.screen][x][y] != null) {
Log.e(TAG, "Error loading shortcut " + item
+ " into cell (" + item.screen + ":"
+ x + "," + y
+ ") occupied by "
+ occupied[item.screen][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[item.screen][x][y] = item;
}
}
return true;
}
private void loadWorkspace() {
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();
mAdditionalDrawerItems.clear();
mItems.clear();
mAppWidgets.clear();
mFolders.clear();
final ArrayList<Long> itemsToRemove = new ArrayList<Long>();
final Cursor c = contentResolver.query(
LauncherSettings.Favorites.CONTENT_URI, null, null, null, null);
final ItemInfo occupied[][][] = new ItemInfo[Launcher.SCREEN_COUNT][Launcher.NUMBER_CELLS_X][Launcher.NUMBER_CELLS_Y];
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 iconTypeIndex = c.getColumnIndexOrThrow(
LauncherSettings.Favorites.ICON_TYPE);
final int iconIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.ICON);
c.getColumnIndexOrThrow(
LauncherSettings.Favorites.ICON_PACKAGE);
c.getColumnIndexOrThrow(
LauncherSettings.Favorites.ICON_RESOURCE);
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 screenIndex = c.getColumnIndexOrThrow(
LauncherSettings.Favorites.SCREEN);
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 uriIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.URI);
final int displayModeIndex = c.getColumnIndexOrThrow(
LauncherSettings.Favorites.DISPLAY_MODE);
ShortcutInfo info;
String intentDescription;
LauncherAppWidgetInfo appWidgetInfo;
int container;
long id;
Intent intent;
while (!mStopped && c.moveToNext()) {
try {
int itemType = c.getInt(itemTypeIndex);
switch (itemType) {
case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
intentDescription = c.getString(intentIndex);
try {
intent = Intent.parseUri(intentDescription, 0);
} catch (URISyntaxException e) {
continue;
}
info = getShortcutInfo(c, context, iconIndex, titleIndex);
if (info != null) {
info.intent = intent;
info.id = c.getLong(idIndex);
container = c.getInt(containerIndex);
info.container = container;
info.screen = c.getInt(screenIndex);
info.cellX = c.getInt(cellXIndex);
info.cellY = c.getInt(cellYIndex);
// check & update map of what's occupied
if (!checkItemPlacement(occupied, info)) {
break;
}
switch (container) {
case LauncherSettings.Favorites.CONTAINER_DESKTOP:
mItems.add(info);
break;
default:
// Item is in a user folder
UserFolderInfo folderInfo =
findOrMakeUserFolder(mFolders, container);
folderInfo.add(info);
break;
}
} else {
// Failed to load the shortcut, probably because the
// activity manager couldn't resolve it (maybe the app
// was uninstalled), or the db row was somehow screwed up.
// Delete it.
id = c.getLong(idIndex);
Log.e(TAG, "Error loading shortcut " + id + ", removing it");
contentResolver.delete(LauncherSettings.Favorites.getContentUri(
id, false), null, null);
}
break;
case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER:
id = c.getLong(idIndex);
UserFolderInfo folderInfo = findOrMakeUserFolder(mFolders, id);
folderInfo.setTitle(c.getString(titleIndex));
folderInfo.id = id;
container = c.getInt(containerIndex);
folderInfo.container = container;
folderInfo.screen = c.getInt(screenIndex);
folderInfo.cellX = c.getInt(cellXIndex);
folderInfo.cellY = c.getInt(cellYIndex);
// check & update map of what's occupied
if (!checkItemPlacement(occupied, folderInfo)) {
break;
}
switch (container) {
case LauncherSettings.Favorites.CONTAINER_DESKTOP:
mItems.add(folderInfo);
break;
case LauncherSettings.Favorites.CONTAINER_DRAWER:
mAdditionalDrawerItems.add(folderInfo);
break;
}
mFolders.put(folderInfo.id, folderInfo);
break;
case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER:
id = c.getLong(idIndex);
Uri uri = Uri.parse(c.getString(uriIndex));
// Make sure the live folder exists
final ProviderInfo providerInfo =
context.getPackageManager().resolveContentProvider(
uri.getAuthority(), 0);
if (providerInfo == null && !isSafeMode) {
itemsToRemove.add(id);
} else {
LiveFolderInfo liveFolderInfo = findOrMakeLiveFolder(mFolders, id);
intentDescription = c.getString(intentIndex);
intent = null;
if (intentDescription != null) {
try {
intent = Intent.parseUri(intentDescription, 0);
} catch (URISyntaxException e) {
// Ignore, a live folder might not have a base intent
}
}
liveFolderInfo.setTitle(c.getString(titleIndex));
liveFolderInfo.id = id;
liveFolderInfo.uri = uri;
container = c.getInt(containerIndex);
liveFolderInfo.container = container;
liveFolderInfo.screen = c.getInt(screenIndex);
liveFolderInfo.cellX = c.getInt(cellXIndex);
liveFolderInfo.cellY = c.getInt(cellYIndex);
liveFolderInfo.baseIntent = intent;
liveFolderInfo.displayMode = c.getInt(displayModeIndex);
// check & update map of what's occupied
if (!checkItemPlacement(occupied, liveFolderInfo)) {
break;
}
loadLiveFolderIcon(context, c, iconTypeIndex, iconIndex, liveFolderInfo);
switch (container) {
case LauncherSettings.Favorites.CONTAINER_DESKTOP:
mItems.add(liveFolderInfo);
break;
case LauncherSettings.Favorites.CONTAINER_DRAWER:
mAdditionalDrawerItems.add(liveFolderInfo);
break;
}
mFolders.put(liveFolderInfo.id, liveFolderInfo);
}
break;
case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET:
// Read all Launcher-specific widget details
int appWidgetId = c.getInt(appWidgetIdIndex);
id = c.getLong(idIndex);
final AppWidgetProviderInfo provider =
widgets.getAppWidgetInfo(appWidgetId);
if (!isSafeMode && (provider == null || provider.provider == null ||
provider.provider.getPackageName() == null)) {
Log.e(TAG, "Deleting widget that isn't installed anymore: id="
+ id + " appWidgetId=" + appWidgetId);
itemsToRemove.add(id);
} else {
appWidgetInfo = new LauncherAppWidgetInfo(appWidgetId);
appWidgetInfo.id = id;
appWidgetInfo.screen = c.getInt(screenIndex);
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 -- ignoring!");
continue;
}
appWidgetInfo.container = c.getInt(containerIndex);
// check & update map of what's occupied
if (!checkItemPlacement(occupied, appWidgetInfo)) {
break;
}
mAppWidgets.add(appWidgetInfo);
}
break;
}
} catch (Exception e) {
Log.w(TAG, "Desktop items loading interrupted:", e);
}
}
} finally {
c.close();
}
if (mAdditionalDrawerItems.size() > 0) {
Callbacks cbs = mCallbacks.get();
if (cbs != null) {
cbs.bindAppsAdded(mAdditionalDrawerItems);
}
}
if (itemsToRemove.size() > 0) {
ContentProviderClient client = contentResolver.acquireContentProviderClient(
LauncherSettings.Favorites.CONTENT_URI);
// Remove dead items
for (long id : itemsToRemove) {
// 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);
}
}
}
}
/**
* Read everything out of our database.
*/
private void bindWorkspace() {
// 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;
}
int N;
// Tell the workspace that we're about to start firing items at it
mHandler.post(new Runnable() {
public void run() {
Callbacks callbacks = tryGetCallbacks(oldCallbacks);
if (callbacks != null) {
callbacks.startBinding();
}
}
});
// Add the items to the workspace.
N = mItems.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);
mHandler.post(new Runnable() {
public void run() {
Callbacks callbacks = tryGetCallbacks(oldCallbacks);
if (callbacks != null) {
callbacks.bindItems(mItems, start, start+chunkSize);
}
}
});
}
mHandler.post(new Runnable() {
public void run() {
Callbacks callbacks = tryGetCallbacks(oldCallbacks);
if (callbacks != null) {
callbacks.bindFolders(mFolders);
}
}
});
// Wait until the queue goes empty.
mHandler.post(new Runnable() {
public void run() {
}
});
// Bind the widgets, one at a time.
// WARNING: this is calling into the workspace from the background thread,
// but since getCurrentScreen() just returns the int, we should be okay. This
// is just a hint for the order, and if it's wrong, we'll be okay.
// TODO: instead, we should have that push the current screen into here.
final int currentScreen = oldCallbacks.getCurrentWorkspaceScreen();
N = mAppWidgets.size();
// once for the current screen
for (int i=0; i<N; i++) {
final LauncherAppWidgetInfo widget = mAppWidgets.get(i);
if (widget.screen == currentScreen) {
mHandler.post(new Runnable() {
public void run() {
Callbacks callbacks = tryGetCallbacks(oldCallbacks);
if (callbacks != null) {
callbacks.bindAppWidget(widget);
}
}
});
}
}
// once for the other screens
for (int i=0; i<N; i++) {
final LauncherAppWidgetInfo widget = mAppWidgets.get(i);
if (widget.screen != currentScreen) {
mHandler.post(new Runnable() {
public void run() {
Callbacks callbacks = tryGetCallbacks(oldCallbacks);
if (callbacks != null) {
callbacks.bindAppWidget(widget);
}
}
});
}
}
// Tell the workspace that we're done.
mHandler.post(new Runnable() {
public void run() {
Callbacks callbacks = tryGetCallbacks(oldCallbacks);
if (callbacks != null) {
callbacks.finishBindingItems();
}
}
});
// If we're profiling, this is the last thing in the queue.
mHandler.post(new Runnable() {
public void run() {
}
});
}
private void loadAndBindAllApps() {
if (!mAllAppsLoaded) {
loadAllAppsByBatch();
if (mStopped) {
return;
}
mAllAppsLoaded = true;
} else {
onlyBindAllApps();
}
}
@SuppressWarnings("unchecked")
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
final ArrayList<ShortcutInfo> list
= (ArrayList<ShortcutInfo>)mAllAppsList.data.clone();
final ArrayList<IconItemInfo> otherItems
= (ArrayList<IconItemInfo>)mAdditionalDrawerItems.clone();
mHandler.post(new Runnable() {
public void run() {
final Callbacks callbacks = tryGetCallbacks(oldCallbacks);
if (callbacks != null) {
callbacks.bindAllApplications(list, otherItems);
}
}
});
}
private void loadAllAppsByBatch() {
// 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 (loadAllAppsByBatch)");
return;
}
long startTime = System.currentTimeMillis();
List<ShortcutInfo> apps = new AppDB(mContext, mIconCache).getApps();
long endTime = System.currentTimeMillis();
Log.v(TAG, "found apps: "+apps.size());
Log.v(TAG, "took: "+(endTime - startTime)+"ms");
if (apps.size() == 0)
return; // There are no apps?!?
mAllAppsList.clear();
for (ShortcutInfo info : apps)
mAllAppsList.add(info);
final Callbacks callbacks = tryGetCallbacks(oldCallbacks);
final ArrayList<ShortcutInfo> added = mAllAppsList.added;
mAllAppsList.added = new ArrayList<ShortcutInfo>();
final ArrayList<IconItemInfo> others
= new ArrayList<IconItemInfo>(mAdditionalDrawerItems);
mHandler.post(new Runnable() {
public void run() {
if (callbacks != null) {
callbacks.bindAllApplications(added, others);
} else {
Log.i(TAG, "not binding apps: no Launcher activity");
}
}
});
}
}
/**
* This is called from the code that adds shortcuts from the intent receiver. This
* doesn't have a Cursor, but
*/
public ShortcutInfo getShortcutInfo(Intent intent, Context context) {
return getShortcutInfo(intent, context, null, -1, -1);
}
/**
* Make an ShortcutInfo object for a shortcut that is an application.
*
* If c is not null, then it will be used to fill in missing data like the title and icon.
*/
public ShortcutInfo getShortcutInfo(Intent intent, Context context,
Cursor c, int iconIndex, int titleIndex) {
final ShortcutInfo info = new ShortcutInfo();
ComponentName componentName = intent.getComponent();
if (componentName == null) {
return null;
}
// TODO: See if the PackageManager knows about this case. If it doesn't
// then return null & delete this.
// the resource -- This may implicitly give us back the fallback icon,
// but don't worry about that. All we're doing with usingFallbackIcon is
// to avoid saving lots of copies of that in the database, and most apps
// have icons anyway.
info.setIcon(getIconFromCursor(c, iconIndex));
// from the db
if (c != null) {
info.setTitle(c.getString(titleIndex));
}
info.itemType = LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT;
return info;
}
/**
* Make an ShortcutInfo object for a shortcut that isn't an application.
*/
private ShortcutInfo getShortcutInfo(Cursor c, Context context, int iconIndex, int titleIndex) {
final ShortcutInfo info = new ShortcutInfo();
info.itemType = LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT;
if (c != null) {
if(titleIndex >= 0)
info.setTitle(c.getString(titleIndex));
if(iconIndex >= 0)
info.setIcon(getIconFromCursor(c, iconIndex));
}
return info;
}
static Bitmap getIconFromCursor(Cursor c, int iconIndex) {
if (c != null && iconIndex >= 0) {
byte[] data = c.getBlob(iconIndex);
try {
return BitmapFactory.decodeByteArray(data, 0, data.length);
} catch (Exception e) {
return null;
}
}
return null;
}
ShortcutInfo addShortcut(Context context, Intent data,
CellLayout.CellInfo cellInfo, boolean notify) {
final ShortcutInfo info = infoFromShortcutIntent(context, data);
addItemToDatabase(context, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
cellInfo.screen, cellInfo.cellX, cellInfo.cellY, notify);
return info;
}
private ShortcutInfo infoFromShortcutIntent(Context context, Intent data) {
Intent intent = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_INTENT);
String name = data.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
Parcelable bitmap = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_ICON);
Bitmap icon = null;
ShortcutIconResource iconResource = null;
if (bitmap != null && bitmap instanceof Bitmap) {
icon = Utilities.createIconBitmap(new FastBitmapDrawable((Bitmap)bitmap), context);
} else {
Parcelable extra = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE);
if (extra != null && extra instanceof ShortcutIconResource) {
try {
iconResource = (ShortcutIconResource) extra;
final PackageManager packageManager = context.getPackageManager();
Resources resources = packageManager.getResourcesForApplication(
iconResource.packageName);
final int id = resources.getIdentifier(iconResource.resourceName, null, null);
icon = Utilities.createIconBitmap(resources.getDrawable(id), context);
} catch (Exception e) {
Log.w(TAG, "Could not load shortcut icon: " + extra);
}
}
}
final ShortcutInfo info = new ShortcutInfo();
info.setIcon(icon);
info.setTitle(name);
info.intent = intent;
return info;
}
private static void loadLiveFolderIcon(Context context, Cursor c, int iconTypeIndex,
int iconBitmapIndex, LiveFolderInfo liveFolderInfo) {
int iconType = c.getInt(iconTypeIndex);
if (iconType == LauncherSettings.Favorites.ICON_TYPE_BITMAP)
liveFolderInfo.setIcon(getIconFromCursor(c,iconBitmapIndex));
else
liveFolderInfo.setIcon(null);
}
/**
* Return an existing UserFolderInfo object if we have encountered this ID previously,
* or make a new one.
*/
private static UserFolderInfo findOrMakeUserFolder(HashMap<Long, FolderInfo> folders, long id) {
// See if a placeholder was created for us already
FolderInfo folderInfo = folders.get(id);
if (folderInfo == null || !(folderInfo instanceof UserFolderInfo)) {
// No placeholder -- create a new instance
folderInfo = new UserFolderInfo();
folders.put(id, folderInfo);
}
return (UserFolderInfo) folderInfo;
}
/**
* Return an existing UserFolderInfo object if we have encountered this ID previously, or make a
* new one.
*/
private static LiveFolderInfo findOrMakeLiveFolder(HashMap<Long, FolderInfo> folders, long id) {
// See if a placeholder was created for us already
FolderInfo folderInfo = folders.get(id);
if (folderInfo == null || !(folderInfo instanceof LiveFolderInfo)) {
// No placeholder -- create a new instance
folderInfo = new LiveFolderInfo();
folders.put(id, folderInfo);
}
return (LiveFolderInfo) folderInfo;
}
/**
* Resize an item in the DB to a new <container, screen, cellX, cellY>
*/
static void resizeItemInDatabase(Context context, ItemInfo item, long container, int screen,
int cellX, int cellY, int spanX, int spanY) {
item.container = container;
item.screen = screen;
item.cellX = cellX;
item.cellY = cellY;
item.spanX = spanX;
item.spanY = spanY;
final ContentValues values = new ContentValues();
final ContentResolver cr = context.getContentResolver();
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);
values.put(LauncherSettings.Favorites.SCREEN, item.screen);
cr.update(LauncherSettings.Favorites.getContentUri(item.id, false), values, null, null);
}
}