Launcher.java revision e77c08d15f23c403293dbb40c6a36967de822c89 
1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.launcher2;
18
19import android.app.Activity;
20import android.app.AlertDialog;
21import android.app.Application;
22import android.app.Dialog;
23import android.app.ISearchManager;
24import android.app.IWallpaperService;
25import android.app.SearchManager;
26import android.app.StatusBarManager;
27import android.content.ActivityNotFoundException;
28import android.content.BroadcastReceiver;
29import android.content.ComponentName;
30import android.content.ContentResolver;
31import android.content.Context;
32import android.content.DialogInterface;
33import android.content.Intent;
34import android.content.IntentFilter;
35import android.content.Intent.ShortcutIconResource;
36import android.content.pm.ActivityInfo;
37import android.content.pm.PackageManager;
38import android.content.pm.PackageManager.NameNotFoundException;
39import android.content.res.Configuration;
40import android.content.res.Resources;
41import android.database.ContentObserver;
42import android.graphics.Bitmap;
43import android.graphics.Rect;
44import android.graphics.drawable.BitmapDrawable;
45import android.graphics.drawable.Drawable;
46import android.graphics.drawable.TransitionDrawable;
47import android.os.Bundle;
48import android.os.Handler;
49import android.os.IBinder;
50import android.os.Looper;
51import android.os.Message;
52import android.os.MessageQueue;
53import android.os.Parcelable;
54import android.os.RemoteException;
55import android.os.ServiceManager;
56import android.provider.LiveFolders;
57import android.text.Selection;
58import android.text.SpannableStringBuilder;
59import android.text.TextUtils;
60import android.text.method.TextKeyListener;
61import static android.util.Log.*;
62import android.view.Display;
63import android.view.KeyEvent;
64import android.view.LayoutInflater;
65import android.view.Menu;
66import android.view.MenuItem;
67import android.view.View;
68import android.view.ViewGroup;
69import android.view.View.OnLongClickListener;
70import android.view.inputmethod.InputMethodManager;
71import android.widget.EditText;
72import android.widget.GridView;
73import android.widget.ImageView;
74import android.widget.TextView;
75import android.widget.Toast;
76import android.appwidget.AppWidgetManager;
77import android.appwidget.AppWidgetProviderInfo;
78
79import java.lang.ref.WeakReference;
80import java.util.ArrayList;
81import java.util.LinkedList;
82import java.io.DataOutputStream;
83import java.io.FileNotFoundException;
84import java.io.IOException;
85import java.io.DataInputStream;
86
87/**
88 * Default launcher application.
89 */
90public final class Launcher extends Activity implements View.OnClickListener, OnLongClickListener {
91    static final String LOG_TAG = "Launcher";
92    static final boolean LOGD = false;
93
94    private static final boolean PROFILE_STARTUP = false;
95    private static final boolean PROFILE_DRAWER = false;
96    private static final boolean PROFILE_ROTATE = false;
97    private static final boolean DEBUG_USER_INTERFACE = false;
98
99    private static final int WALLPAPER_SCREENS_SPAN = 2;
100
101    private static final int MENU_GROUP_ADD = 1;
102    private static final int MENU_ADD = Menu.FIRST + 1;
103    private static final int MENU_WALLPAPER_SETTINGS = MENU_ADD + 1;
104    private static final int MENU_SEARCH = MENU_WALLPAPER_SETTINGS + 1;
105    private static final int MENU_NOTIFICATIONS = MENU_SEARCH + 1;
106    private static final int MENU_SETTINGS = MENU_NOTIFICATIONS + 1;
107
108    private static final int REQUEST_CREATE_SHORTCUT = 1;
109    private static final int REQUEST_CREATE_LIVE_FOLDER = 4;
110    private static final int REQUEST_CREATE_APPWIDGET = 5;
111    private static final int REQUEST_PICK_APPLICATION = 6;
112    private static final int REQUEST_PICK_SHORTCUT = 7;
113    private static final int REQUEST_PICK_LIVE_FOLDER = 8;
114    private static final int REQUEST_PICK_APPWIDGET = 9;
115
116    static final String EXTRA_SHORTCUT_DUPLICATE = "duplicate";
117
118    static final String EXTRA_CUSTOM_WIDGET = "custom_widget";
119    static final String SEARCH_WIDGET = "search_widget";
120
121    static final int SCREEN_COUNT = 3;
122    static final int DEFAULT_SCREN = 1;
123    static final int NUMBER_CELLS_X = 4;
124    static final int NUMBER_CELLS_Y = 4;
125
126    static final int DIALOG_ALL_APPS = 1;
127    static final int DIALOG_CREATE_SHORTCUT = 2;
128    static final int DIALOG_RENAME_FOLDER = 3;
129
130    private static final String PREFERENCES = "launcher.preferences";
131
132    // Type: int
133    private static final String RUNTIME_STATE_CURRENT_SCREEN = "launcher.current_screen";
134    // Type: boolean
135    private static final String RUNTIME_STATE_ALL_APPS_FOLDER = "launcher.all_apps_folder";
136    // Type: long
137    private static final String RUNTIME_STATE_USER_FOLDERS = "launcher.user_folder";
138    // Type: int
139    private static final String RUNTIME_STATE_PENDING_ADD_SCREEN = "launcher.add_screen";
140    // Type: int
141    private static final String RUNTIME_STATE_PENDING_ADD_CELL_X = "launcher.add_cellX";
142    // Type: int
143    private static final String RUNTIME_STATE_PENDING_ADD_CELL_Y = "launcher.add_cellY";
144    // Type: int
145    private static final String RUNTIME_STATE_PENDING_ADD_SPAN_X = "launcher.add_spanX";
146    // Type: int
147    private static final String RUNTIME_STATE_PENDING_ADD_SPAN_Y = "launcher.add_spanY";
148    // Type: int
149    private static final String RUNTIME_STATE_PENDING_ADD_COUNT_X = "launcher.add_countX";
150    // Type: int
151    private static final String RUNTIME_STATE_PENDING_ADD_COUNT_Y = "launcher.add_countY";
152    // Type: int[]
153    private static final String RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS = "launcher.add_occupied_cells";
154    // Type: boolean
155    private static final String RUNTIME_STATE_PENDING_FOLDER_RENAME = "launcher.rename_folder";
156    // Type: long
157    private static final String RUNTIME_STATE_PENDING_FOLDER_RENAME_ID = "launcher.rename_folder_id";
158
159    private static final LauncherModel sModel = new LauncherModel();
160
161    private static Bitmap sWallpaper;
162
163    private static final Object sLock = new Object();
164    private static int sScreen = DEFAULT_SCREN;
165
166    private static WallpaperIntentReceiver sWallpaperReceiver;
167
168    private final BroadcastReceiver mApplicationsReceiver = new ApplicationsIntentReceiver();
169    private final ContentObserver mObserver = new FavoritesChangeObserver();
170
171    private LayoutInflater mInflater;
172
173    private DragLayer mDragLayer;
174    private WallpaperView mWallpaperView;
175    private Workspace mWorkspace;
176
177    private AppWidgetManager mAppWidgetManager;
178    private LauncherAppWidgetHost mAppWidgetHost;
179
180    static final int APPWIDGET_HOST_ID = 1024;
181
182    private CellLayout.CellInfo mAddItemCellInfo;
183    private CellLayout.CellInfo mMenuAddInfo;
184    private final int[] mCellCoordinates = new int[2];
185    private FolderInfo mFolderInfo;
186
187    private AllAppsDialog mAllAppsDialog;
188    private TransitionDrawable mHandleIcon;
189    private HandleView mHandleView;
190    private AllAppsGridView mAllAppsGrid; // TODO: put this into AllAppsDialog
191
192    private boolean mDesktopLocked = true;
193    private Bundle mSavedState;
194
195    private SpannableStringBuilder mDefaultKeySsb = null;
196
197    private boolean mDestroyed;
198
199    private boolean mIsNewIntent;
200
201    private boolean mRestoring;
202    private boolean mWaitingForResult;
203    private boolean mLocaleChanged;
204
205    private boolean mHomeDown;
206    private boolean mBackDown;
207
208    private Bundle mSavedInstanceState;
209
210    private DesktopBinder mBinder;
211
212    @Override
213    protected void onCreate(Bundle savedInstanceState) {
214        super.onCreate(savedInstanceState);
215        mInflater = getLayoutInflater();
216
217        mAppWidgetManager = AppWidgetManager.getInstance(this);
218
219        mAppWidgetHost = new LauncherAppWidgetHost(this, APPWIDGET_HOST_ID);
220        mAppWidgetHost.startListening();
221
222        if (PROFILE_STARTUP) {
223            android.os.Debug.startMethodTracing("/sdcard/launcher");
224        }
225
226        checkForLocaleChange();
227        setWallpaperDimension();
228
229        setContentView(R.layout.launcher);
230        setupViews();
231
232        mAllAppsDialog = new AllAppsDialog(this);
233        mAllAppsDialog.lock();
234
235        registerIntentReceivers();
236        registerContentObservers();
237
238        mSavedState = savedInstanceState;
239        restoreState(mSavedState);
240
241        if (PROFILE_STARTUP) {
242            android.os.Debug.stopMethodTracing();
243        }
244
245        if (!mRestoring) {
246            startLoaders();
247        }
248
249        // For handling default keys
250        mDefaultKeySsb = new SpannableStringBuilder();
251        Selection.setSelection(mDefaultKeySsb, 0);
252    }
253
254    private void checkForLocaleChange() {
255        final LocaleConfiguration localeConfiguration = new LocaleConfiguration();
256        readConfiguration(this, localeConfiguration);
257
258        final Configuration configuration = getResources().getConfiguration();
259
260        final String previousLocale = localeConfiguration.locale;
261        final String locale = configuration.locale.toString();
262
263        final int previousMcc = localeConfiguration.mcc;
264        final int mcc = configuration.mcc;
265
266        final int previousMnc = localeConfiguration.mnc;
267        final int mnc = configuration.mnc;
268
269        mLocaleChanged = !locale.equals(previousLocale) || mcc != previousMcc || mnc != previousMnc;
270
271        if (mLocaleChanged) {
272            localeConfiguration.locale = locale;
273            localeConfiguration.mcc = mcc;
274            localeConfiguration.mnc = mnc;
275
276            writeConfiguration(this, localeConfiguration);
277        }
278    }
279
280    private static class LocaleConfiguration {
281        public String locale;
282        public int mcc = -1;
283        public int mnc = -1;
284    }
285
286    private static void readConfiguration(Context context, LocaleConfiguration configuration) {
287        DataInputStream in = null;
288        try {
289            in = new DataInputStream(context.openFileInput(PREFERENCES));
290            configuration.locale = in.readUTF();
291            configuration.mcc = in.readInt();
292            configuration.mnc = in.readInt();
293        } catch (FileNotFoundException e) {
294            // Ignore
295        } catch (IOException e) {
296            // Ignore
297        } finally {
298            if (in != null) {
299                try {
300                    in.close();
301                } catch (IOException e) {
302                    // Ignore
303                }
304            }
305        }
306    }
307
308    private static void writeConfiguration(Context context, LocaleConfiguration configuration) {
309        DataOutputStream out = null;
310        try {
311            out = new DataOutputStream(context.openFileOutput(PREFERENCES, MODE_PRIVATE));
312            out.writeUTF(configuration.locale);
313            out.writeInt(configuration.mcc);
314            out.writeInt(configuration.mnc);
315            out.flush();
316        } catch (FileNotFoundException e) {
317            // Ignore
318        } catch (IOException e) {
319            //noinspection ResultOfMethodCallIgnored
320            context.getFileStreamPath(PREFERENCES).delete();
321        } finally {
322            if (out != null) {
323                try {
324                    out.close();
325                } catch (IOException e) {
326                    // Ignore
327                }
328            }
329        }
330    }
331
332    static int getScreen() {
333        synchronized (sLock) {
334            return sScreen;
335        }
336    }
337
338    static void setScreen(int screen) {
339        synchronized (sLock) {
340            sScreen = screen;
341        }
342    }
343
344    private void startLoaders() {
345        boolean loadApplications = sModel.loadApplications(true, this, mLocaleChanged);
346        sModel.loadUserItems(!mLocaleChanged, this, mLocaleChanged, loadApplications);
347
348        mRestoring = false;
349    }
350
351    private void setWallpaperDimension() {
352        IBinder binder = ServiceManager.getService(WALLPAPER_SERVICE);
353        IWallpaperService wallpaperService = IWallpaperService.Stub.asInterface(binder);
354
355        Display display = getWindowManager().getDefaultDisplay();
356        boolean isPortrait = display.getWidth() < display.getHeight();
357
358        final int width = isPortrait ? display.getWidth() : display.getHeight();
359        final int height = isPortrait ? display.getHeight() : display.getWidth();
360        try {
361            wallpaperService.setDimensionHints(width * WALLPAPER_SCREENS_SPAN, height);
362        } catch (RemoteException e) {
363            // System is dead!
364        }
365    }
366
367    @Override
368    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
369        mWaitingForResult = false;
370
371        // The pattern used here is that a user PICKs a specific application,
372        // which, depending on the target, might need to CREATE the actual target.
373
374        // For example, the user would PICK_SHORTCUT for "Music playlist", and we
375        // launch over to the Music app to actually CREATE_SHORTCUT.
376
377        if (resultCode == RESULT_OK && mAddItemCellInfo != null) {
378            switch (requestCode) {
379                case REQUEST_PICK_APPLICATION:
380                    completeAddApplication(this, data, mAddItemCellInfo, !mDesktopLocked);
381                    break;
382                case REQUEST_PICK_SHORTCUT:
383                    processShortcut(data, REQUEST_PICK_APPLICATION, REQUEST_CREATE_SHORTCUT);
384                    break;
385                case REQUEST_CREATE_SHORTCUT:
386                    completeAddShortcut(data, mAddItemCellInfo, !mDesktopLocked);
387                    break;
388                case REQUEST_PICK_LIVE_FOLDER:
389                    addLiveFolder(data);
390                    break;
391                case REQUEST_CREATE_LIVE_FOLDER:
392                    completeAddLiveFolder(data, mAddItemCellInfo, !mDesktopLocked);
393                    break;
394                case REQUEST_PICK_APPWIDGET:
395                    addAppWidget(data);
396                    break;
397                case REQUEST_CREATE_APPWIDGET:
398                    completeAddAppWidget(data, mAddItemCellInfo, !mDesktopLocked);
399                    break;
400            }
401        } else if (requestCode == REQUEST_PICK_APPWIDGET &&
402                resultCode == RESULT_CANCELED && data != null) {
403            // Clean up the appWidgetId if we canceled
404            int appWidgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
405            if (appWidgetId != -1) {
406                mAppWidgetHost.deleteAppWidgetId(appWidgetId);
407            }
408        }
409    }
410
411    @Override
412    protected void onResume() {
413        super.onResume();
414
415        if (mRestoring) {
416            startLoaders();
417        }
418
419        // If this was a new intent (i.e., the mIsNewIntent flag got set to true by
420        // onNewIntent), then close the search dialog if needed, because it probably
421        // came from the user pressing 'home' (rather than, for example, pressing 'back').
422        if (mIsNewIntent) {
423            // Post to a handler so that this happens after the search dialog tries to open
424            // itself again.
425            mWorkspace.post(new Runnable() {
426                public void run() {
427                    ISearchManager searchManagerService = ISearchManager.Stub.asInterface(
428                            ServiceManager.getService(Context.SEARCH_SERVICE));
429                    try {
430                        searchManagerService.stopSearch();
431                    } catch (RemoteException e) {
432                        e(LOG_TAG, "error stopping search", e);
433                    }
434                }
435            });
436        }
437
438        mIsNewIntent = false;
439    }
440
441    @Override
442    protected void onPause() {
443        super.onPause();
444        closeAllAppsDialog(false);
445    }
446
447    @Override
448    public Object onRetainNonConfigurationInstance() {
449        // Flag any binder to stop early before switching
450        if (mBinder != null) {
451            mBinder.mTerminate = true;
452        }
453
454        if (PROFILE_ROTATE) {
455            android.os.Debug.startMethodTracing("/sdcard/launcher-rotate");
456        }
457        return null;
458    }
459
460    private boolean acceptFilter() {
461        final InputMethodManager inputManager = (InputMethodManager)
462                getSystemService(Context.INPUT_METHOD_SERVICE);
463        return !inputManager.isFullscreenMode();
464    }
465
466    @Override
467    public boolean onKeyDown(int keyCode, KeyEvent event) {
468        boolean handled = super.onKeyDown(keyCode, event);
469        if (!handled && acceptFilter() && keyCode != KeyEvent.KEYCODE_ENTER) {
470            boolean gotKey = TextKeyListener.getInstance().onKeyDown(mWorkspace, mDefaultKeySsb,
471                    keyCode, event);
472            if (gotKey && mDefaultKeySsb != null && mDefaultKeySsb.length() > 0) {
473                // something usable has been typed - start a search
474                // the typed text will be retrieved and cleared by
475                // showSearchDialog()
476                // If there are multiple keystrokes before the search dialog takes focus,
477                // onSearchRequested() will be called for every keystroke,
478                // but it is idempotent, so it's fine.
479                return onSearchRequested();
480            }
481        }
482
483        return handled;
484    }
485
486    private String getTypedText() {
487        return mDefaultKeySsb.toString();
488    }
489
490    private void clearTypedText() {
491        mDefaultKeySsb.clear();
492        mDefaultKeySsb.clearSpans();
493        Selection.setSelection(mDefaultKeySsb, 0);
494    }
495
496    /**
497     * Restores the previous state, if it exists.
498     *
499     * @param savedState The previous state.
500     */
501    private void restoreState(Bundle savedState) {
502        if (savedState == null) {
503            return;
504        }
505
506        final int currentScreen = savedState.getInt(RUNTIME_STATE_CURRENT_SCREEN, -1);
507        if (currentScreen > -1) {
508            mWorkspace.setCurrentScreen(currentScreen);
509        }
510
511        final int addScreen = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SCREEN, -1);
512        if (addScreen > -1) {
513            mAddItemCellInfo = new CellLayout.CellInfo();
514            final CellLayout.CellInfo addItemCellInfo = mAddItemCellInfo;
515            addItemCellInfo.valid = true;
516            addItemCellInfo.screen = addScreen;
517            addItemCellInfo.cellX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_X);
518            addItemCellInfo.cellY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_Y);
519            addItemCellInfo.spanX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_X);
520            addItemCellInfo.spanY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y);
521            addItemCellInfo.findVacantCellsFromOccupied(
522                    savedState.getBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS),
523                    savedState.getInt(RUNTIME_STATE_PENDING_ADD_COUNT_X),
524                    savedState.getInt(RUNTIME_STATE_PENDING_ADD_COUNT_Y));
525            mRestoring = true;
526        }
527
528        boolean renameFolder = savedState.getBoolean(RUNTIME_STATE_PENDING_FOLDER_RENAME, false);
529        if (renameFolder) {
530            long id = savedState.getLong(RUNTIME_STATE_PENDING_FOLDER_RENAME_ID);
531            mFolderInfo = sModel.getFolderById(this, id);
532            mRestoring = true;
533        }
534    }
535
536    /**
537     * Finds all the views we need and configure them properly.
538     */
539    private void setupViews() {
540        mDragLayer = (DragLayer) findViewById(R.id.drag_layer);
541        final DragLayer dragLayer = mDragLayer;
542
543        mWallpaperView = (WallpaperView) dragLayer.findViewById(R.id.wallpaper);
544        final WallpaperView wallpaper = mWallpaperView;
545
546        mWorkspace = (Workspace) dragLayer.findViewById(R.id.workspace);
547        final Workspace workspace = mWorkspace;
548
549        final DeleteZone deleteZone = (DeleteZone) dragLayer.findViewById(R.id.delete_zone);
550
551        mHandleView = (HandleView) findViewById(R.id.all_apps);
552        mHandleView.setLauncher(this);
553        mHandleView.setOnClickListener(this);
554        mHandleIcon = (TransitionDrawable) mHandleView.getDrawable();
555        mHandleIcon.setCrossFadeEnabled(true);
556
557        workspace.setOnLongClickListener(this);
558        workspace.setDragger(dragLayer);
559        workspace.setLauncher(this);
560        workspace.setWallpaper(wallpaper);
561
562        loadWallpaper();
563        wallpaper.setScreenCount(workspace.getScreenCount());
564
565        deleteZone.setLauncher(this);
566        deleteZone.setDragController(dragLayer);
567        deleteZone.setHandle(mHandleView);
568
569        // TODO dragLayer.setIgnoredDropTarget(grid);
570        dragLayer.setDragScoller(workspace);
571        dragLayer.setDragListener(deleteZone);
572    }
573
574    /**
575     * Creates a view representing a shortcut.
576     *
577     * @param info The data structure describing the shortcut.
578     *
579     * @return A View inflated from R.layout.application.
580     */
581    View createShortcut(ApplicationInfo info) {
582        return createShortcut(R.layout.application,
583                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), info);
584    }
585
586    /**
587     * Creates a view representing a shortcut inflated from the specified resource.
588     *
589     * @param layoutResId The id of the XML layout used to create the shortcut.
590     * @param parent The group the shortcut belongs to.
591     * @param info The data structure describing the shortcut.
592     *
593     * @return A View inflated from layoutResId.
594     */
595    View createShortcut(int layoutResId, ViewGroup parent, ApplicationInfo info) {
596        TextView favorite = (TextView) mInflater.inflate(layoutResId, parent, false);
597
598        if (!info.filtered) {
599            info.icon = Utilities.createIconThumbnail(info.icon, this);
600            info.filtered = true;
601        }
602
603        favorite.setCompoundDrawablesWithIntrinsicBounds(null, info.icon, null, null);
604        favorite.setText(info.title);
605        favorite.setTag(info);
606        favorite.setOnClickListener(this);
607
608        return favorite;
609    }
610
611    /**
612     * Add an application shortcut to the workspace.
613     *
614     * @param data The intent describing the application.
615     * @param cellInfo The position on screen where to create the shortcut.
616     */
617    void completeAddApplication(Context context, Intent data, CellLayout.CellInfo cellInfo,
618            boolean insertAtFirst) {
619        cellInfo.screen = mWorkspace.getCurrentScreen();
620        if (!findSingleSlot(cellInfo)) return;
621
622        final ApplicationInfo info = infoFromApplicationIntent(context, data);
623        if (info != null) {
624            mWorkspace.addApplicationShortcut(info, cellInfo, insertAtFirst);
625        }
626    }
627
628    private static ApplicationInfo infoFromApplicationIntent(Context context, Intent data) {
629        ComponentName component = data.getComponent();
630        PackageManager packageManager = context.getPackageManager();
631        ActivityInfo activityInfo = null;
632        try {
633            activityInfo = packageManager.getActivityInfo(component, 0 /* no flags */);
634        } catch (NameNotFoundException e) {
635            e(LOG_TAG, "Couldn't find ActivityInfo for selected application", e);
636        }
637
638        if (activityInfo != null) {
639            ApplicationInfo itemInfo = new ApplicationInfo();
640
641            itemInfo.title = activityInfo.loadLabel(packageManager);
642            if (itemInfo.title == null) {
643                itemInfo.title = activityInfo.name;
644            }
645
646            itemInfo.setActivity(component, Intent.FLAG_ACTIVITY_NEW_TASK |
647                    Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
648            itemInfo.icon = activityInfo.loadIcon(packageManager);
649            itemInfo.container = ItemInfo.NO_ID;
650
651            return itemInfo;
652        }
653
654        return null;
655    }
656
657    /**
658     * Add a shortcut to the workspace.
659     *
660     * @param data The intent describing the shortcut.
661     * @param cellInfo The position on screen where to create the shortcut.
662     * @param insertAtFirst
663     */
664    private void completeAddShortcut(Intent data, CellLayout.CellInfo cellInfo,
665            boolean insertAtFirst) {
666        cellInfo.screen = mWorkspace.getCurrentScreen();
667        if (!findSingleSlot(cellInfo)) return;
668
669        final ApplicationInfo info = addShortcut(this, data, cellInfo, false);
670
671        if (!mRestoring) {
672            sModel.addDesktopItem(info);
673
674            final View view = createShortcut(info);
675            mWorkspace.addInCurrentScreen(view, cellInfo.cellX, cellInfo.cellY, 1, 1, insertAtFirst);
676        } else if (sModel.isDesktopLoaded()) {
677            sModel.addDesktopItem(info);
678        }
679    }
680
681
682    /**
683     * Add a widget to the workspace.
684     *
685     * @param data The intent describing the appWidgetId.
686     * @param cellInfo The position on screen where to create the widget.
687     */
688    private void completeAddAppWidget(Intent data, CellLayout.CellInfo cellInfo,
689            boolean insertAtFirst) {
690
691        Bundle extras = data.getExtras();
692        int appWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
693
694        d(LOG_TAG, "dumping extras content="+extras.toString());
695
696        AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
697
698        // Calculate the grid spans needed to fit this widget
699        CellLayout layout = (CellLayout) mWorkspace.getChildAt(cellInfo.screen);
700        int[] spans = layout.rectToCell(appWidgetInfo.minWidth, appWidgetInfo.minHeight);
701
702        // Try finding open space on Launcher screen
703        final int[] xy = mCellCoordinates;
704        if (!findSlot(cellInfo, xy, spans[0], spans[1])) return;
705
706        // Build Launcher-specific widget info and save to database
707        LauncherAppWidgetInfo launcherInfo = new LauncherAppWidgetInfo(appWidgetId);
708        launcherInfo.spanX = spans[0];
709        launcherInfo.spanY = spans[1];
710
711        LauncherModel.addItemToDatabase(this, launcherInfo,
712                LauncherSettings.Favorites.CONTAINER_DESKTOP,
713                mWorkspace.getCurrentScreen(), xy[0], xy[1], false);
714
715        if (!mRestoring) {
716            sModel.addDesktopAppWidget(launcherInfo);
717
718            // Perform actual inflation because we're live
719            launcherInfo.hostView = mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
720
721            launcherInfo.hostView.setAppWidget(appWidgetId, appWidgetInfo);
722            launcherInfo.hostView.setTag(launcherInfo);
723
724            mWorkspace.addInCurrentScreen(launcherInfo.hostView, xy[0], xy[1],
725                    launcherInfo.spanX, launcherInfo.spanY, insertAtFirst);
726        } else if (sModel.isDesktopLoaded()) {
727            sModel.addDesktopAppWidget(launcherInfo);
728        }
729    }
730
731    public LauncherAppWidgetHost getAppWidgetHost() {
732        return mAppWidgetHost;
733    }
734
735    static ApplicationInfo addShortcut(Context context, Intent data,
736            CellLayout.CellInfo cellInfo, boolean notify) {
737
738        final ApplicationInfo info = infoFromShortcutIntent(context, data);
739        LauncherModel.addItemToDatabase(context, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
740                cellInfo.screen, cellInfo.cellX, cellInfo.cellY, notify);
741
742        return info;
743    }
744
745    private static ApplicationInfo infoFromShortcutIntent(Context context, Intent data) {
746        Intent intent = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_INTENT);
747        String name = data.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
748        Bitmap bitmap = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_ICON);
749
750        Drawable icon = null;
751        boolean filtered = false;
752        boolean customIcon = false;
753        ShortcutIconResource iconResource = null;
754
755        if (bitmap != null) {
756            icon = new FastBitmapDrawable(Utilities.createBitmapThumbnail(bitmap, context));
757            filtered = true;
758            customIcon = true;
759        } else {
760            Parcelable extra = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE);
761            if (extra != null && extra instanceof ShortcutIconResource) {
762                try {
763                    iconResource = (ShortcutIconResource) extra;
764                    final PackageManager packageManager = context.getPackageManager();
765                    Resources resources = packageManager.getResourcesForApplication(
766                            iconResource.packageName);
767                    final int id = resources.getIdentifier(iconResource.resourceName, null, null);
768                    icon = resources.getDrawable(id);
769                } catch (Exception e) {
770                    w(LOG_TAG, "Could not load shortcut icon: " + extra);
771                }
772            }
773        }
774
775        if (icon == null) {
776            icon = context.getPackageManager().getDefaultActivityIcon();
777        }
778
779        final ApplicationInfo info = new ApplicationInfo();
780        info.icon = icon;
781        info.filtered = filtered;
782        info.title = name;
783        info.intent = intent;
784        info.customIcon = customIcon;
785        info.iconResource = iconResource;
786
787        return info;
788    }
789
790    @Override
791    protected void onNewIntent(Intent intent) {
792        super.onNewIntent(intent);
793
794        // Close the menu
795        if (Intent.ACTION_MAIN.equals(intent.getAction())) {
796            getWindow().closeAllPanels();
797
798            // Set this flag so that onResume knows to close the search dialog if it's open,
799            // because this was a new intent (thus a press of 'home' or some such) rather than
800            // for example onResume being called when the user pressed the 'back' button.
801            mIsNewIntent = true;
802
803            try {
804                dismissDialog(DIALOG_CREATE_SHORTCUT);
805                // Unlock the workspace if the dialog was showing
806                mWorkspace.unlock();
807            } catch (Exception e) {
808                // An exception is thrown if the dialog is not visible, which is fine
809            }
810
811            try {
812                dismissDialog(DIALOG_RENAME_FOLDER);
813                // Unlock the workspace if the dialog was showing
814                mWorkspace.unlock();
815            } catch (Exception e) {
816                // An exception is thrown if the dialog is not visible, which is fine
817            }
818
819            if ((intent.getFlags() & Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT) !=
820                    Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT) {
821
822                if (!mWorkspace.isDefaultScreenShowing()) {
823                    mWorkspace.moveToDefaultScreen();
824                }
825
826                closeAllAppsDialog(true);
827
828                final View v = getWindow().peekDecorView();
829                if (v != null && v.getWindowToken() != null) {
830                    InputMethodManager imm = (InputMethodManager)getSystemService(
831                            INPUT_METHOD_SERVICE);
832                    imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
833                }
834            } else {
835                closeAllAppsDialog(false);
836            }
837        }
838    }
839
840    @Override
841    protected void onRestoreInstanceState(Bundle savedInstanceState) {
842        // Do not call super here
843        mSavedInstanceState = savedInstanceState;
844    }
845
846    @Override
847    protected void onSaveInstanceState(Bundle outState) {
848        outState.putInt(RUNTIME_STATE_CURRENT_SCREEN, mWorkspace.getCurrentScreen());
849
850        final ArrayList<Folder> folders = mWorkspace.getOpenFolders();
851        if (folders.size() > 0) {
852            final int count = folders.size();
853            long[] ids = new long[count];
854            for (int i = 0; i < count; i++) {
855                final FolderInfo info = folders.get(i).getInfo();
856                ids[i] = info.id;
857            }
858            outState.putLongArray(RUNTIME_STATE_USER_FOLDERS, ids);
859        } else {
860            super.onSaveInstanceState(outState);
861        }
862
863        final boolean isConfigurationChange = getChangingConfigurations() != 0;
864
865        // When the drawer is opened and we are saving the state because of a
866        // configuration change
867        if (mAllAppsDialog.isOpen && isConfigurationChange) {
868            outState.putBoolean(RUNTIME_STATE_ALL_APPS_FOLDER, true);
869        }
870
871        if (mAddItemCellInfo != null && mAddItemCellInfo.valid && mWaitingForResult) {
872            final CellLayout.CellInfo addItemCellInfo = mAddItemCellInfo;
873            final CellLayout layout = (CellLayout) mWorkspace.getChildAt(addItemCellInfo.screen);
874
875            outState.putInt(RUNTIME_STATE_PENDING_ADD_SCREEN, addItemCellInfo.screen);
876            outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_X, addItemCellInfo.cellX);
877            outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_Y, addItemCellInfo.cellY);
878            outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_X, addItemCellInfo.spanX);
879            outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y, addItemCellInfo.spanY);
880            outState.putInt(RUNTIME_STATE_PENDING_ADD_COUNT_X, layout.getCountX());
881            outState.putInt(RUNTIME_STATE_PENDING_ADD_COUNT_Y, layout.getCountY());
882            outState.putBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS,
883                   layout.getOccupiedCells());
884        }
885
886        if (mFolderInfo != null && mWaitingForResult) {
887            outState.putBoolean(RUNTIME_STATE_PENDING_FOLDER_RENAME, true);
888            outState.putLong(RUNTIME_STATE_PENDING_FOLDER_RENAME_ID, mFolderInfo.id);
889        }
890    }
891
892    @Override
893    public void onDestroy() {
894        mDestroyed = true;
895
896        super.onDestroy();
897
898        try {
899            mAppWidgetHost.stopListening();
900        } catch (NullPointerException ex) {
901            w(LOG_TAG, "problem while stopping AppWidgetHost during Launcher destruction", ex);
902        }
903
904        TextKeyListener.getInstance().release();
905
906        mAllAppsGrid.clearTextFilter();
907        mAllAppsGrid.setAdapter(null);
908        sModel.unbind();
909        sModel.abortLoaders();
910
911        getContentResolver().unregisterContentObserver(mObserver);
912        unregisterReceiver(mApplicationsReceiver);
913    }
914
915    @Override
916    public void startActivityForResult(Intent intent, int requestCode) {
917        if (requestCode >= 0) mWaitingForResult = true;
918        super.startActivityForResult(intent, requestCode);
919    }
920
921    @Override
922    public void startSearch(String initialQuery, boolean selectInitialQuery,
923            Bundle appSearchData, boolean globalSearch) {
924
925        closeAllAppsDialog(false);
926
927        // Slide the search widget to the top, if it's on the current screen,
928        // otherwise show the search dialog immediately.
929        Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
930        if (searchWidget == null) {
931            showSearchDialog(initialQuery, selectInitialQuery, appSearchData, globalSearch);
932        } else {
933            searchWidget.startSearch(initialQuery, selectInitialQuery, appSearchData, globalSearch);
934            // show the currently typed text in the search widget while sliding
935            searchWidget.setQuery(getTypedText());
936        }
937    }
938
939    /**
940     * Show the search dialog immediately, without changing the search widget.
941     *
942     * @see Activity#startSearch(String, boolean, android.os.Bundle, boolean)
943     */
944    void showSearchDialog(String initialQuery, boolean selectInitialQuery,
945            Bundle appSearchData, boolean globalSearch) {
946
947        if (initialQuery == null) {
948            // Use any text typed in the launcher as the initial query
949            initialQuery = getTypedText();
950            clearTypedText();
951        }
952        if (appSearchData == null) {
953            appSearchData = new Bundle();
954            appSearchData.putString(SearchManager.SOURCE, "launcher-search");
955        }
956
957        final SearchManager searchManager =
958                (SearchManager) getSystemService(Context.SEARCH_SERVICE);
959
960        final Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
961        if (searchWidget != null) {
962            // This gets called when the user leaves the search dialog to go back to
963            // the Launcher.
964            searchManager.setOnCancelListener(new SearchManager.OnCancelListener() {
965                public void onCancel() {
966                    searchManager.setOnCancelListener(null);
967                    stopSearch();
968                }
969            });
970        }
971
972        searchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(),
973            appSearchData, globalSearch);
974    }
975
976    /**
977     * Cancel search dialog if it is open.
978     */
979    void stopSearch() {
980        // Close search dialog
981        SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
982        searchManager.stopSearch();
983        // Restore search widget to its normal position
984        Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
985        if (searchWidget != null) {
986            searchWidget.stopSearch(false);
987        }
988    }
989
990    @Override
991    public boolean onCreateOptionsMenu(Menu menu) {
992        if (mDesktopLocked) return false;
993
994        super.onCreateOptionsMenu(menu);
995        menu.add(MENU_GROUP_ADD, MENU_ADD, 0, R.string.menu_add)
996                .setIcon(android.R.drawable.ic_menu_add)
997                .setAlphabeticShortcut('A');
998        menu.add(0, MENU_WALLPAPER_SETTINGS, 0, R.string.menu_wallpaper)
999                 .setIcon(android.R.drawable.ic_menu_gallery)
1000                 .setAlphabeticShortcut('W');
1001        menu.add(0, MENU_SEARCH, 0, R.string.menu_search)
1002                .setIcon(android.R.drawable.ic_search_category_default)
1003                .setAlphabeticShortcut(SearchManager.MENU_KEY);
1004        menu.add(0, MENU_NOTIFICATIONS, 0, R.string.menu_notifications)
1005                .setIcon(com.android.internal.R.drawable.ic_menu_notifications)
1006                .setAlphabeticShortcut('N');
1007
1008        final Intent settings = new Intent(android.provider.Settings.ACTION_SETTINGS);
1009        settings.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
1010                Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
1011
1012        menu.add(0, MENU_SETTINGS, 0, R.string.menu_settings)
1013                .setIcon(android.R.drawable.ic_menu_preferences).setAlphabeticShortcut('P')
1014                .setIntent(settings);
1015
1016        return true;
1017    }
1018
1019    @Override
1020    public boolean onPrepareOptionsMenu(Menu menu) {
1021        super.onPrepareOptionsMenu(menu);
1022
1023        mMenuAddInfo = mWorkspace.findAllVacantCells(null);
1024        menu.setGroupEnabled(MENU_GROUP_ADD, mMenuAddInfo != null && mMenuAddInfo.valid);
1025
1026        return true;
1027    }
1028
1029    @Override
1030    public boolean onOptionsItemSelected(MenuItem item) {
1031        switch (item.getItemId()) {
1032            case MENU_ADD:
1033                addItems();
1034                return true;
1035            case MENU_WALLPAPER_SETTINGS:
1036                startWallpaper();
1037                return true;
1038            case MENU_SEARCH:
1039                onSearchRequested();
1040                return true;
1041            case MENU_NOTIFICATIONS:
1042                showNotifications();
1043                return true;
1044        }
1045
1046        return super.onOptionsItemSelected(item);
1047    }
1048
1049    /**
1050     * Indicates that we want global search for this activity by setting the globalSearch
1051     * argument for {@link #startSearch} to true.
1052     */
1053
1054    @Override
1055    public boolean onSearchRequested() {
1056        startSearch(null, false, null, true);
1057        return true;
1058    }
1059
1060    private void addItems() {
1061        showAddDialog(mMenuAddInfo);
1062    }
1063
1064    private void removeShortcutsForPackage(String packageName) {
1065        if (packageName != null && packageName.length() > 0) {
1066            mWorkspace.removeShortcutsForPackage(packageName);
1067        }
1068    }
1069
1070    private void updateShortcutsForPackage(String packageName) {
1071        if (packageName != null && packageName.length() > 0) {
1072            mWorkspace.updateShortcutsForPackage(packageName);
1073        }
1074    }
1075
1076    void addAppWidget(Intent data) {
1077        // TODO: catch bad widget exception when sent
1078        int appWidgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
1079
1080        String customWidget = data.getStringExtra(EXTRA_CUSTOM_WIDGET);
1081        if (SEARCH_WIDGET.equals(customWidget)) {
1082            // We don't need this any more, since this isn't a real app widget.
1083            mAppWidgetHost.deleteAppWidgetId(appWidgetId);
1084            // add the search widget
1085            addSearch();
1086        } else {
1087            AppWidgetProviderInfo appWidget = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
1088
1089            if (appWidget.configure != null) {
1090                // Launch over to configure widget, if needed
1091                Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_CONFIGURE);
1092                intent.setComponent(appWidget.configure);
1093                intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
1094
1095                startActivityForResult(intent, REQUEST_CREATE_APPWIDGET);
1096            } else {
1097                // Otherwise just add it
1098                onActivityResult(REQUEST_CREATE_APPWIDGET, Activity.RESULT_OK, data);
1099            }
1100        }
1101    }
1102
1103    void addSearch() {
1104        final Widget info = Widget.makeSearch();
1105        final CellLayout.CellInfo cellInfo = mAddItemCellInfo;
1106
1107        final int[] xy = mCellCoordinates;
1108        final int spanX = info.spanX;
1109        final int spanY = info.spanY;
1110
1111        if (!findSlot(cellInfo, xy, spanX, spanY)) return;
1112
1113        sModel.addDesktopItem(info);
1114        LauncherModel.addItemToDatabase(this, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
1115        mWorkspace.getCurrentScreen(), xy[0], xy[1], false);
1116
1117        final View view = mInflater.inflate(info.layoutResource, null);
1118        view.setTag(info);
1119        Search search = (Search) view.findViewById(R.id.widget_search);
1120        search.setLauncher(this);
1121
1122        mWorkspace.addInCurrentScreen(view, xy[0], xy[1], info.spanX, spanY);
1123    }
1124
1125    void processShortcut(Intent intent, int requestCodeApplication, int requestCodeShortcut) {
1126        // Handle case where user selected "Applications"
1127        String applicationName = getResources().getString(R.string.group_applications);
1128        String shortcutName = intent.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
1129
1130        if (applicationName != null && applicationName.equals(shortcutName)) {
1131            Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
1132            mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
1133
1134            Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1135            pickIntent.putExtra(Intent.EXTRA_INTENT, mainIntent);
1136            startActivityForResult(pickIntent, requestCodeApplication);
1137        } else {
1138            startActivityForResult(intent, requestCodeShortcut);
1139        }
1140    }
1141
1142    void addLiveFolder(Intent intent) {
1143        // Handle case where user selected "Folder"
1144        String folderName = getResources().getString(R.string.group_folder);
1145        String shortcutName = intent.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
1146
1147        if (folderName != null && folderName.equals(shortcutName)) {
1148            addFolder(!mDesktopLocked);
1149        } else {
1150            startActivityForResult(intent, REQUEST_CREATE_LIVE_FOLDER);
1151        }
1152    }
1153
1154    void addFolder(boolean insertAtFirst) {
1155        UserFolderInfo folderInfo = new UserFolderInfo();
1156        folderInfo.title = getText(R.string.folder_name);
1157
1158        CellLayout.CellInfo cellInfo = mAddItemCellInfo;
1159        cellInfo.screen = mWorkspace.getCurrentScreen();
1160        if (!findSingleSlot(cellInfo)) return;
1161
1162        // Update the model
1163        LauncherModel.addItemToDatabase(this, folderInfo, LauncherSettings.Favorites.CONTAINER_DESKTOP,
1164                mWorkspace.getCurrentScreen(), cellInfo.cellX, cellInfo.cellY, false);
1165        sModel.addDesktopItem(folderInfo);
1166        sModel.addFolder(folderInfo);
1167
1168        // Create the view
1169        FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon, this,
1170                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), folderInfo);
1171        mWorkspace.addInCurrentScreen(newFolder,
1172                cellInfo.cellX, cellInfo.cellY, 1, 1, insertAtFirst);
1173    }
1174
1175    private void completeAddLiveFolder(Intent data, CellLayout.CellInfo cellInfo,
1176            boolean insertAtFirst) {
1177        cellInfo.screen = mWorkspace.getCurrentScreen();
1178        if (!findSingleSlot(cellInfo)) return;
1179
1180        final LiveFolderInfo info = addLiveFolder(this, data, cellInfo, false);
1181
1182        if (!mRestoring) {
1183            sModel.addDesktopItem(info);
1184
1185            final View view = LiveFolderIcon.fromXml(R.layout.live_folder_icon, this,
1186                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), info);
1187            mWorkspace.addInCurrentScreen(view, cellInfo.cellX, cellInfo.cellY, 1, 1, insertAtFirst);
1188        } else if (sModel.isDesktopLoaded()) {
1189            sModel.addDesktopItem(info);
1190        }
1191    }
1192
1193    static LiveFolderInfo addLiveFolder(Context context, Intent data,
1194            CellLayout.CellInfo cellInfo, boolean notify) {
1195
1196        Intent baseIntent = data.getParcelableExtra(LiveFolders.EXTRA_LIVE_FOLDER_BASE_INTENT);
1197        String name = data.getStringExtra(LiveFolders.EXTRA_LIVE_FOLDER_NAME);
1198
1199        Drawable icon = null;
1200        boolean filtered = false;
1201        Intent.ShortcutIconResource iconResource = null;
1202
1203        Parcelable extra = data.getParcelableExtra(LiveFolders.EXTRA_LIVE_FOLDER_ICON);
1204        if (extra != null && extra instanceof Intent.ShortcutIconResource) {
1205            try {
1206                iconResource = (Intent.ShortcutIconResource) extra;
1207                final PackageManager packageManager = context.getPackageManager();
1208                Resources resources = packageManager.getResourcesForApplication(
1209                        iconResource.packageName);
1210                final int id = resources.getIdentifier(iconResource.resourceName, null, null);
1211                icon = resources.getDrawable(id);
1212            } catch (Exception e) {
1213                w(LOG_TAG, "Could not load live folder icon: " + extra);
1214            }
1215        }
1216
1217        if (icon == null) {
1218            icon = context.getResources().getDrawable(R.drawable.ic_launcher_folder);
1219        }
1220
1221        final LiveFolderInfo info = new LiveFolderInfo();
1222        info.icon = icon;
1223        info.filtered = filtered;
1224        info.title = name;
1225        info.iconResource = iconResource;
1226        info.uri = data.getData();
1227        info.baseIntent = baseIntent;
1228        info.displayMode = data.getIntExtra(LiveFolders.EXTRA_LIVE_FOLDER_DISPLAY_MODE,
1229                LiveFolders.DISPLAY_MODE_GRID);
1230
1231        LauncherModel.addItemToDatabase(context, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
1232                cellInfo.screen, cellInfo.cellX, cellInfo.cellY, notify);
1233        sModel.addFolder(info);
1234
1235        return info;
1236    }
1237
1238    private boolean findSingleSlot(CellLayout.CellInfo cellInfo) {
1239        final int[] xy = new int[2];
1240        if (findSlot(cellInfo, xy, 1, 1)) {
1241            cellInfo.cellX = xy[0];
1242            cellInfo.cellY = xy[1];
1243            return true;
1244        }
1245        return false;
1246    }
1247
1248    private boolean findSlot(CellLayout.CellInfo cellInfo, int[] xy, int spanX, int spanY) {
1249        if (!cellInfo.findCellForSpan(xy, spanX, spanY)) {
1250            boolean[] occupied = mSavedState != null ?
1251                    mSavedState.getBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS) : null;
1252            cellInfo = mWorkspace.findAllVacantCells(occupied);
1253            if (!cellInfo.findCellForSpan(xy, spanX, spanY)) {
1254                Toast.makeText(this, getString(R.string.out_of_space), Toast.LENGTH_SHORT).show();
1255                return false;
1256            }
1257        }
1258        return true;
1259    }
1260
1261    private void showNotifications() {
1262        final StatusBarManager statusBar = (StatusBarManager) getSystemService(STATUS_BAR_SERVICE);
1263        if (statusBar != null) {
1264            statusBar.expand();
1265        }
1266    }
1267
1268    private void startWallpaper() {
1269        final Intent pickWallpaper = new Intent(Intent.ACTION_SET_WALLPAPER);
1270        startActivity(Intent.createChooser(pickWallpaper, getString(R.string.chooser_wallpaper)));
1271    }
1272
1273    /**
1274     * Registers various intent receivers. The current implementation registers
1275     * only a wallpaper intent receiver to let other applications change the
1276     * wallpaper.
1277     */
1278    private void registerIntentReceivers() {
1279        if (sWallpaperReceiver == null) {
1280            final Application application = getApplication();
1281
1282            sWallpaperReceiver = new WallpaperIntentReceiver(application, this);
1283
1284            IntentFilter filter = new IntentFilter(Intent.ACTION_WALLPAPER_CHANGED);
1285            application.registerReceiver(sWallpaperReceiver, filter);
1286        } else {
1287            sWallpaperReceiver.setLauncher(this);
1288        }
1289
1290        IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED);
1291        filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
1292        filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
1293        filter.addDataScheme("package");
1294        registerReceiver(mApplicationsReceiver, filter);
1295    }
1296
1297    /**
1298     * Registers various content observers. The current implementation registers
1299     * only a favorites observer to keep track of the favorites applications.
1300     */
1301    private void registerContentObservers() {
1302        ContentResolver resolver = getContentResolver();
1303        resolver.registerContentObserver(LauncherSettings.Favorites.CONTENT_URI, true, mObserver);
1304    }
1305
1306    @Override
1307    public void onWindowFocusChanged(boolean hasFocus) {
1308        super.onWindowFocusChanged(hasFocus);
1309        if (!hasFocus) {
1310            mBackDown = mHomeDown = false;
1311        }
1312    }
1313
1314    @Override
1315    public boolean dispatchKeyEvent(KeyEvent event) {
1316        if (event.getAction() == KeyEvent.ACTION_DOWN) {
1317            switch (event.getKeyCode()) {
1318                case KeyEvent.KEYCODE_BACK:
1319                    mBackDown = true;
1320                    return true;
1321                case KeyEvent.KEYCODE_HOME:
1322                    mHomeDown = true;
1323                    return true;
1324            }
1325        } else if (event.getAction() == KeyEvent.ACTION_UP) {
1326            switch (event.getKeyCode()) {
1327                case KeyEvent.KEYCODE_BACK:
1328                    if (!event.isCanceled()) {
1329                        mWorkspace.dispatchKeyEvent(event);
1330                        if (mAllAppsDialog.isOpen) {
1331                            closeAllAppsDialog(true);
1332                        } else {
1333                            closeFolder();
1334                        }
1335                    }
1336                    mBackDown = false;
1337                    return true;
1338                case KeyEvent.KEYCODE_HOME:
1339                    mHomeDown = false;
1340                    return true;
1341            }
1342        }
1343
1344        return super.dispatchKeyEvent(event);
1345    }
1346
1347    private void closeFolder() {
1348        Folder folder = mWorkspace.getOpenFolder();
1349        if (folder != null) {
1350            closeFolder(folder);
1351        }
1352    }
1353
1354    void closeFolder(Folder folder) {
1355        folder.getInfo().opened = false;
1356        ViewGroup parent = (ViewGroup) folder.getParent();
1357        if (parent != null) {
1358            parent.removeView(folder);
1359        }
1360        folder.onClose();
1361    }
1362
1363    /**
1364     * When the notification that favorites have changed is received, requests
1365     * a favorites list refresh.
1366     */
1367    private void onFavoritesChanged() {
1368        mDesktopLocked = true;
1369        mAllAppsDialog.lock();
1370        sModel.loadUserItems(false, this, false, false);
1371    }
1372
1373    void onDesktopItemsLoaded() {
1374        if (mDestroyed) return;
1375        bindDesktopItems();
1376    }
1377
1378    /**
1379     * Refreshes the shortcuts shown on the workspace.
1380     */
1381    private void bindDesktopItems() {
1382        final ArrayList<ItemInfo> shortcuts = sModel.getDesktopItems();
1383        final ArrayList<LauncherAppWidgetInfo> appWidgets = sModel.getDesktopAppWidgets();
1384        final ApplicationsAdapter drawerAdapter = sModel.getApplicationsAdapter();
1385        if (shortcuts == null || appWidgets == null || drawerAdapter == null) {
1386            return;
1387        }
1388
1389        final Workspace workspace = mWorkspace;
1390        int count = workspace.getChildCount();
1391        for (int i = 0; i < count; i++) {
1392            ((ViewGroup) workspace.getChildAt(i)).removeAllViewsInLayout();
1393        }
1394
1395        if (DEBUG_USER_INTERFACE) {
1396            android.widget.Button finishButton = new android.widget.Button(this);
1397            finishButton.setText("Finish");
1398            workspace.addInScreen(finishButton, 1, 0, 0, 1, 1);
1399
1400            finishButton.setOnClickListener(new android.widget.Button.OnClickListener() {
1401                public void onClick(View v) {
1402                    finish();
1403                }
1404            });
1405        }
1406
1407        // Flag any old binder to terminate early
1408        if (mBinder != null) {
1409            mBinder.mTerminate = true;
1410        }
1411
1412        mBinder = new DesktopBinder(this, shortcuts, appWidgets, drawerAdapter);
1413        mBinder.startBindingItems();
1414    }
1415
1416    private void bindItems(Launcher.DesktopBinder binder,
1417            ArrayList<ItemInfo> shortcuts, int start, int count) {
1418
1419        final Workspace workspace = mWorkspace;
1420        final boolean desktopLocked = mDesktopLocked;
1421
1422        final int end = Math.min(start + DesktopBinder.ITEMS_COUNT, count);
1423        int i = start;
1424
1425        for ( ; i < end; i++) {
1426            final ItemInfo item = shortcuts.get(i);
1427            switch (item.itemType) {
1428                case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION:
1429                case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
1430                    final View shortcut = createShortcut((ApplicationInfo) item);
1431                    workspace.addInScreen(shortcut, item.screen, item.cellX, item.cellY, 1, 1,
1432                            !desktopLocked);
1433                    break;
1434                case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER:
1435                    final FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon, this,
1436                            (ViewGroup) workspace.getChildAt(workspace.getCurrentScreen()),
1437                            (UserFolderInfo) item);
1438                    workspace.addInScreen(newFolder, item.screen, item.cellX, item.cellY, 1, 1,
1439                            !desktopLocked);
1440                    break;
1441                case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER:
1442                    final FolderIcon newLiveFolder = LiveFolderIcon.fromXml(
1443                            R.layout.live_folder_icon, this,
1444                            (ViewGroup) workspace.getChildAt(workspace.getCurrentScreen()),
1445                            (LiveFolderInfo) item);
1446                    workspace.addInScreen(newLiveFolder, item.screen, item.cellX, item.cellY, 1, 1,
1447                            !desktopLocked);
1448                    break;
1449                case LauncherSettings.Favorites.ITEM_TYPE_WIDGET_SEARCH:
1450                    final int screen = workspace.getCurrentScreen();
1451                    final View view = mInflater.inflate(R.layout.widget_search,
1452                            (ViewGroup) workspace.getChildAt(screen), false);
1453
1454                    Search search = (Search) view.findViewById(R.id.widget_search);
1455                    search.setLauncher(this);
1456
1457                    final Widget widget = (Widget) item;
1458                    view.setTag(widget);
1459
1460                    workspace.addWidget(view, widget, !desktopLocked);
1461                    break;
1462            }
1463        }
1464
1465        workspace.requestLayout();
1466
1467        if (end >= count) {
1468            finishBindDesktopItems();
1469            binder.startBindingDrawer();
1470        } else {
1471            binder.obtainMessage(DesktopBinder.MESSAGE_BIND_ITEMS, i, count).sendToTarget();
1472        }
1473    }
1474
1475    private void finishBindDesktopItems() {
1476        if (mSavedState != null) {
1477            if (!mWorkspace.hasFocus()) {
1478                mWorkspace.getChildAt(mWorkspace.getCurrentScreen()).requestFocus();
1479            }
1480
1481            final long[] userFolders = mSavedState.getLongArray(RUNTIME_STATE_USER_FOLDERS);
1482            if (userFolders != null) {
1483                for (long folderId : userFolders) {
1484                    final FolderInfo info = sModel.findFolderById(folderId);
1485                    if (info != null) {
1486                        openFolder(info);
1487                    }
1488                }
1489                final Folder openFolder = mWorkspace.getOpenFolder();
1490                if (openFolder != null) {
1491                    openFolder.requestFocus();
1492                }
1493            }
1494
1495            final boolean allApps = mSavedState.getBoolean(RUNTIME_STATE_ALL_APPS_FOLDER, false);
1496            if (allApps) {
1497                showAllAppsDialog();
1498            }
1499
1500            mSavedState = null;
1501        }
1502
1503        if (mSavedInstanceState != null) {
1504            super.onRestoreInstanceState(mSavedInstanceState);
1505            mSavedInstanceState = null;
1506        }
1507
1508        /* TODO
1509        if (mAllAppsDialog.isOpen && !mDrawer.hasFocus()) {
1510            mDrawer.requestFocus();
1511        }
1512        */
1513
1514        mDesktopLocked = false;
1515        mAllAppsDialog.unlock();
1516    }
1517
1518    private void bindDrawer(Launcher.DesktopBinder binder,
1519            ApplicationsAdapter drawerAdapter) {
1520        mAllAppsGrid.setAdapter(drawerAdapter);
1521        binder.startBindingAppWidgetsWhenIdle();
1522    }
1523
1524    private void bindAppWidgets(Launcher.DesktopBinder binder,
1525            LinkedList<LauncherAppWidgetInfo> appWidgets) {
1526
1527        final Workspace workspace = mWorkspace;
1528        final boolean desktopLocked = mDesktopLocked;
1529
1530        if (!appWidgets.isEmpty()) {
1531            final LauncherAppWidgetInfo item = appWidgets.removeFirst();
1532
1533            final int appWidgetId = item.appWidgetId;
1534            final AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
1535            item.hostView = mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
1536
1537            if (LOGD) d(LOG_TAG, String.format("about to setAppWidget for id=%d, info=%s", appWidgetId, appWidgetInfo));
1538
1539            item.hostView.setAppWidget(appWidgetId, appWidgetInfo);
1540            item.hostView.setTag(item);
1541
1542            workspace.addInScreen(item.hostView, item.screen, item.cellX,
1543                    item.cellY, item.spanX, item.spanY, !desktopLocked);
1544
1545            workspace.requestLayout();
1546        }
1547
1548        if (appWidgets.isEmpty()) {
1549            if (PROFILE_ROTATE) {
1550                android.os.Debug.stopMethodTracing();
1551            }
1552        } else {
1553            binder.obtainMessage(DesktopBinder.MESSAGE_BIND_APPWIDGETS).sendToTarget();
1554        }
1555    }
1556
1557    DragController getDragController() {
1558        return mDragLayer;
1559    }
1560
1561    /**
1562     * Launches the intent referred by the clicked shortcut.
1563     *
1564     * @param v The view representing the clicked shortcut.
1565     */
1566    public void onClick(View v) {
1567        Object tag = v.getTag();
1568        if (tag instanceof ApplicationInfo) {
1569            // Open shortcut
1570            final Intent intent = ((ApplicationInfo) tag).intent;
1571            startActivitySafely(intent);
1572        } else if (tag instanceof FolderInfo) {
1573            handleFolderClick((FolderInfo) tag);
1574        } else if (v == mHandleView) {
1575            if (mAllAppsDialog.isOpen) {
1576                // TODO how can we be here?
1577            } else {
1578                showAllAppsDialog();
1579            }
1580        }
1581    }
1582
1583    void startActivitySafely(Intent intent) {
1584        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
1585        try {
1586            startActivity(intent);
1587        } catch (ActivityNotFoundException e) {
1588            Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
1589        } catch (SecurityException e) {
1590            Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
1591            e(LOG_TAG, "Launcher does not have the permission to launch " + intent +
1592                    ". Make sure to create a MAIN intent-filter for the corresponding activity " +
1593                    "or use the exported attribute for this activity.", e);
1594        }
1595    }
1596
1597    private void handleFolderClick(FolderInfo folderInfo) {
1598        if (!folderInfo.opened) {
1599            // Close any open folder
1600            closeFolder();
1601            // Open the requested folder
1602            openFolder(folderInfo);
1603        } else {
1604            // Find the open folder...
1605            Folder openFolder = mWorkspace.getFolderForTag(folderInfo);
1606            int folderScreen;
1607            if (openFolder != null) {
1608                folderScreen = mWorkspace.getScreenForView(openFolder);
1609                // .. and close it
1610                closeFolder(openFolder);
1611                if (folderScreen != mWorkspace.getCurrentScreen()) {
1612                    // Close any folder open on the current screen
1613                    closeFolder();
1614                    // Pull the folder onto this screen
1615                    openFolder(folderInfo);
1616                }
1617            }
1618        }
1619    }
1620
1621    private void loadWallpaper() {
1622        // The first time the application is started, we load the wallpaper from
1623        // the ApplicationContext
1624        if (sWallpaper == null) {
1625            final Drawable drawable;
1626            if (false) {
1627                drawable = getWallpaper();
1628            } else {
1629                drawable = getResources().getDrawable(R.drawable.wallpaper_path);
1630            }
1631            if (drawable instanceof BitmapDrawable) {
1632                sWallpaper = ((BitmapDrawable) drawable).getBitmap();
1633            } else {
1634                throw new IllegalStateException("The wallpaper must be a BitmapDrawable.");
1635            }
1636        }
1637        mWallpaperView.loadWallpaper(sWallpaper);
1638    }
1639
1640    /**
1641     * Opens the user fodler described by the specified tag. The opening of the folder
1642     * is animated relative to the specified View. If the View is null, no animation
1643     * is played.
1644     *
1645     * @param folderInfo The FolderInfo describing the folder to open.
1646     */
1647    private void openFolder(FolderInfo folderInfo) {
1648        Folder openFolder;
1649
1650        if (folderInfo instanceof UserFolderInfo) {
1651            openFolder = UserFolder.fromXml(this);
1652        } else if (folderInfo instanceof LiveFolderInfo) {
1653            openFolder = com.android.launcher2.LiveFolder.fromXml(this, folderInfo);
1654        } else {
1655            return;
1656        }
1657
1658        openFolder.setDragger(mDragLayer);
1659        openFolder.setLauncher(this);
1660
1661        openFolder.bind(folderInfo);
1662        folderInfo.opened = true;
1663
1664        mWorkspace.addInScreen(openFolder, folderInfo.screen, 0, 0, 4, 4);
1665        openFolder.onOpen();
1666    }
1667
1668    /**
1669     * Returns true if the workspace is being loaded. When the workspace is loading,
1670     * no user interaction should be allowed to avoid any conflict.
1671     *
1672     * @return True if the workspace is locked, false otherwise.
1673     */
1674    boolean isWorkspaceLocked() {
1675        return mDesktopLocked;
1676    }
1677
1678    public boolean onLongClick(View v) {
1679        if (mDesktopLocked) {
1680            return false;
1681        }
1682
1683        if (!(v instanceof CellLayout)) {
1684            v = (View) v.getParent();
1685        }
1686
1687        CellLayout.CellInfo cellInfo = (CellLayout.CellInfo) v.getTag();
1688
1689        // This happens when long clicking an item with the dpad/trackball
1690        if (cellInfo == null) {
1691            return true;
1692        }
1693
1694        if (mWorkspace.allowLongPress()) {
1695            if (cellInfo.cell == null) {
1696                if (cellInfo.valid) {
1697                    // User long pressed on empty space
1698                    mWorkspace.setAllowLongPress(false);
1699                    showAddDialog(cellInfo);
1700                }
1701            } else {
1702                if (!(cellInfo.cell instanceof Folder)) {
1703                    // User long pressed on an item
1704                    mWorkspace.startDrag(cellInfo);
1705                }
1706            }
1707        }
1708        return true;
1709    }
1710
1711    static LauncherModel getModel() {
1712        return sModel;
1713    }
1714
1715    void closeAllApplications() {
1716        // TODO mDrawer.close();
1717        mAllAppsDialog.dismiss();
1718    }
1719
1720    View getDrawerHandle() {
1721        return mHandleView;
1722    }
1723
1724    boolean isDrawerDown() {
1725        return /* TODO !mDrawer.isMoving() && */ !mAllAppsDialog.isOpen;
1726    }
1727
1728    Workspace getWorkspace() {
1729        return mWorkspace;
1730    }
1731
1732    /* TODO
1733    GridView getApplicationsGrid() {
1734        return mAllAppsGrid;
1735    }
1736    */
1737
1738    @Override
1739    protected Dialog onCreateDialog(int id) {
1740        switch (id) {
1741            case DIALOG_ALL_APPS:
1742                return mAllAppsDialog;
1743            case DIALOG_CREATE_SHORTCUT:
1744                return new CreateShortcut().createDialog();
1745            case DIALOG_RENAME_FOLDER:
1746                return new RenameFolder().createDialog();
1747        }
1748
1749        return super.onCreateDialog(id);
1750    }
1751
1752    @Override
1753    protected void onPrepareDialog(int id, Dialog dialog) {
1754        switch (id) {
1755            case DIALOG_ALL_APPS:
1756                break;
1757            case DIALOG_CREATE_SHORTCUT:
1758                break;
1759            case DIALOG_RENAME_FOLDER:
1760                if (mFolderInfo != null) {
1761                    EditText input = (EditText) dialog.findViewById(R.id.folder_name);
1762                    final CharSequence text = mFolderInfo.title;
1763                    input.setText(text);
1764                    input.setSelection(0, text.length());
1765                }
1766                break;
1767        }
1768    }
1769
1770    void showRenameDialog(FolderInfo info) {
1771        mFolderInfo = info;
1772        mWaitingForResult = true;
1773        showDialog(DIALOG_RENAME_FOLDER);
1774    }
1775
1776    private void showAddDialog(CellLayout.CellInfo cellInfo) {
1777        mAddItemCellInfo = cellInfo;
1778        mWaitingForResult = true;
1779        showDialog(DIALOG_CREATE_SHORTCUT);
1780    }
1781
1782    private void pickShortcut(int requestCode, int title) {
1783        Bundle bundle = new Bundle();
1784
1785        ArrayList<String> shortcutNames = new ArrayList<String>();
1786        shortcutNames.add(getString(R.string.group_applications));
1787        bundle.putStringArrayList(Intent.EXTRA_SHORTCUT_NAME, shortcutNames);
1788
1789        ArrayList<ShortcutIconResource> shortcutIcons = new ArrayList<ShortcutIconResource>();
1790        shortcutIcons.add(ShortcutIconResource.fromContext(Launcher.this,
1791                        R.drawable.ic_launcher_application));
1792        bundle.putParcelableArrayList(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, shortcutIcons);
1793
1794        Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1795        pickIntent.putExtra(Intent.EXTRA_INTENT, new Intent(Intent.ACTION_CREATE_SHORTCUT));
1796        pickIntent.putExtra(Intent.EXTRA_TITLE, getText(title));
1797        pickIntent.putExtras(bundle);
1798
1799        startActivityForResult(pickIntent, requestCode);
1800    }
1801
1802    private class RenameFolder {
1803        private EditText mInput;
1804
1805        Dialog createDialog() {
1806            mWaitingForResult = true;
1807            final View layout = View.inflate(Launcher.this, R.layout.rename_folder, null);
1808            mInput = (EditText) layout.findViewById(R.id.folder_name);
1809
1810            AlertDialog.Builder builder = new AlertDialog.Builder(Launcher.this);
1811            builder.setIcon(0);
1812            builder.setTitle(getString(R.string.rename_folder_title));
1813            builder.setCancelable(true);
1814            builder.setOnCancelListener(new Dialog.OnCancelListener() {
1815                public void onCancel(DialogInterface dialog) {
1816                    cleanup();
1817                }
1818            });
1819            builder.setNegativeButton(getString(R.string.cancel_action),
1820                new Dialog.OnClickListener() {
1821                    public void onClick(DialogInterface dialog, int which) {
1822                        cleanup();
1823                    }
1824                }
1825            );
1826            builder.setPositiveButton(getString(R.string.rename_action),
1827                new Dialog.OnClickListener() {
1828                    public void onClick(DialogInterface dialog, int which) {
1829                        changeFolderName();
1830                    }
1831                }
1832            );
1833            builder.setView(layout);
1834
1835            final AlertDialog dialog = builder.create();
1836            dialog.setOnShowListener(new DialogInterface.OnShowListener() {
1837                public void onShow(DialogInterface dialog) {
1838                    mWorkspace.lock();
1839                }
1840            });
1841
1842            return dialog;
1843        }
1844
1845        private void changeFolderName() {
1846            final String name = mInput.getText().toString();
1847            if (!TextUtils.isEmpty(name)) {
1848                // Make sure we have the right folder info
1849                mFolderInfo = sModel.findFolderById(mFolderInfo.id);
1850                mFolderInfo.title = name;
1851                LauncherModel.updateItemInDatabase(Launcher.this, mFolderInfo);
1852
1853                if (mDesktopLocked) {
1854                    mAllAppsDialog.lock();
1855                    sModel.loadUserItems(false, Launcher.this, false, false);
1856                } else {
1857                    final FolderIcon folderIcon = (FolderIcon)
1858                            mWorkspace.getViewForTag(mFolderInfo);
1859                    if (folderIcon != null) {
1860                        folderIcon.setText(name);
1861                        getWorkspace().requestLayout();
1862                    } else {
1863                        mDesktopLocked = true;
1864                        mAllAppsDialog.lock();
1865                        sModel.loadUserItems(false, Launcher.this, false, false);
1866                    }
1867                }
1868            }
1869            cleanup();
1870        }
1871
1872        private void cleanup() {
1873            mWorkspace.unlock();
1874            dismissDialog(DIALOG_RENAME_FOLDER);
1875            mWaitingForResult = false;
1876            mFolderInfo = null;
1877        }
1878    }
1879
1880    /**
1881     * Holds the 3d all apps view.
1882     */
1883    private class AllAppsDialog extends Dialog implements DialogInterface.OnCancelListener,
1884            DialogInterface.OnDismissListener, DialogInterface.OnShowListener {
1885
1886        boolean isOpen;
1887
1888        AllAppsDialog(Context context) {
1889            super(context, android.R.style.Theme_Translucent_NoTitleBar);
1890
1891            setOnCancelListener(this);
1892            setOnDismissListener(this);
1893            setOnShowListener(this);
1894
1895            setContentView(R.layout.all_apps);
1896            AllAppsGridView grid = mAllAppsGrid = (AllAppsGridView)findViewById(R.id.all_apps);
1897
1898            grid.setTextFilterEnabled(false);
1899            // TODO grid.setDragger(dragLayer);
1900            grid.setLauncher(Launcher.this);
1901        }
1902
1903        public void onCancel(DialogInterface dialog) {
1904            onDestroy();
1905        }
1906
1907        public void onDismiss(DialogInterface dialog) {
1908            onDestroy();
1909        }
1910
1911        public void onShow(DialogInterface dialog) {
1912        }
1913
1914        private void onDestroy() {
1915        }
1916
1917        void lock() {
1918            // TODO
1919        }
1920
1921        void unlock() {
1922            // TODO
1923        }
1924
1925        @Override public boolean onKeyDown(int keyCode, KeyEvent event) {
1926            switch (keyCode) {
1927                case KeyEvent.KEYCODE_BACK:
1928                    closeAllAppsDialog(true);
1929                    return true;
1930                default:
1931                    return super.onKeyDown(keyCode, event);
1932            }
1933        }
1934    }
1935
1936    void showAllAppsDialog() {
1937        mAllAppsDialog.isOpen = true;
1938        showDialog(DIALOG_ALL_APPS);
1939        mWorkspace.hide();
1940    }
1941
1942    private void closeAllAppsDialog(boolean animated) {
1943        if (mAllAppsDialog.isOpen) {
1944            if (animated) {
1945                // TODO mDrawer.animateClose();
1946                mAllAppsDialog.dismiss();
1947            } else {
1948                mAllAppsDialog.dismiss();
1949            }
1950            mAllAppsDialog.isOpen = false;
1951            mWorkspace.getChildAt(mWorkspace.getCurrentScreen()).requestFocus();
1952            mWorkspace.show();
1953        }
1954    }
1955
1956    /**
1957     * Displays the shortcut creation dialog and launches, if necessary, the
1958     * appropriate activity.
1959     */
1960    private class CreateShortcut implements DialogInterface.OnClickListener,
1961            DialogInterface.OnCancelListener, DialogInterface.OnDismissListener,
1962            DialogInterface.OnShowListener {
1963
1964        private AddAdapter mAdapter;
1965
1966        Dialog createDialog() {
1967            mWaitingForResult = true;
1968
1969            mAdapter = new AddAdapter(Launcher.this);
1970
1971            final AlertDialog.Builder builder = new AlertDialog.Builder(Launcher.this);
1972            builder.setTitle(getString(R.string.menu_item_add_item));
1973            builder.setAdapter(mAdapter, this);
1974
1975            builder.setInverseBackgroundForced(true);
1976
1977            AlertDialog dialog = builder.create();
1978            dialog.setOnCancelListener(this);
1979            dialog.setOnDismissListener(this);
1980            dialog.setOnShowListener(this);
1981
1982            return dialog;
1983        }
1984
1985        public void onCancel(DialogInterface dialog) {
1986            mWaitingForResult = false;
1987            cleanup();
1988        }
1989
1990        public void onDismiss(DialogInterface dialog) {
1991            mWorkspace.unlock();
1992        }
1993
1994        private void cleanup() {
1995            mWorkspace.unlock();
1996            dismissDialog(DIALOG_CREATE_SHORTCUT);
1997        }
1998
1999        /**
2000         * Handle the action clicked in the "Add to home" dialog.
2001         */
2002        public void onClick(DialogInterface dialog, int which) {
2003            Resources res = getResources();
2004            cleanup();
2005
2006            switch (which) {
2007                case AddAdapter.ITEM_SHORTCUT: {
2008                    // Insert extra item to handle picking application
2009                    pickShortcut(REQUEST_PICK_SHORTCUT, R.string.title_select_shortcut);
2010                    break;
2011                }
2012
2013                case AddAdapter.ITEM_APPWIDGET: {
2014                    int appWidgetId = Launcher.this.mAppWidgetHost.allocateAppWidgetId();
2015
2016                    Intent pickIntent = new Intent(AppWidgetManager.ACTION_APPWIDGET_PICK);
2017                    pickIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
2018                    // add the search widget
2019                    ArrayList<AppWidgetProviderInfo> customInfo =
2020                            new ArrayList<AppWidgetProviderInfo>();
2021                    AppWidgetProviderInfo info = new AppWidgetProviderInfo();
2022                    info.provider = new ComponentName(getPackageName(), "XXX.YYY");
2023                    info.label = getString(R.string.group_search);
2024                    info.icon = R.drawable.ic_search_widget;
2025                    customInfo.add(info);
2026                    pickIntent.putParcelableArrayListExtra(
2027                            AppWidgetManager.EXTRA_CUSTOM_INFO, customInfo);
2028                    ArrayList<Bundle> customExtras = new ArrayList<Bundle>();
2029                    Bundle b = new Bundle();
2030                    b.putString(EXTRA_CUSTOM_WIDGET, SEARCH_WIDGET);
2031                    customExtras.add(b);
2032                    pickIntent.putParcelableArrayListExtra(
2033                            AppWidgetManager.EXTRA_CUSTOM_EXTRAS, customExtras);
2034                    // start the pick activity
2035                    startActivityForResult(pickIntent, REQUEST_PICK_APPWIDGET);
2036                    break;
2037                }
2038
2039                case AddAdapter.ITEM_LIVE_FOLDER: {
2040                    // Insert extra item to handle inserting folder
2041                    Bundle bundle = new Bundle();
2042
2043                    ArrayList<String> shortcutNames = new ArrayList<String>();
2044                    shortcutNames.add(res.getString(R.string.group_folder));
2045                    bundle.putStringArrayList(Intent.EXTRA_SHORTCUT_NAME, shortcutNames);
2046
2047                    ArrayList<ShortcutIconResource> shortcutIcons =
2048                            new ArrayList<ShortcutIconResource>();
2049                    shortcutIcons.add(ShortcutIconResource.fromContext(Launcher.this,
2050                            R.drawable.ic_launcher_folder));
2051                    bundle.putParcelableArrayList(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, shortcutIcons);
2052
2053                    Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
2054                    pickIntent.putExtra(Intent.EXTRA_INTENT,
2055                            new Intent(LiveFolders.ACTION_CREATE_LIVE_FOLDER));
2056                    pickIntent.putExtra(Intent.EXTRA_TITLE,
2057                            getText(R.string.title_select_live_folder));
2058                    pickIntent.putExtras(bundle);
2059
2060                    startActivityForResult(pickIntent, REQUEST_PICK_LIVE_FOLDER);
2061                    break;
2062                }
2063
2064                case AddAdapter.ITEM_WALLPAPER: {
2065                    startWallpaper();
2066                    break;
2067                }
2068            }
2069        }
2070
2071        public void onShow(DialogInterface dialog) {
2072            mWorkspace.lock();
2073        }
2074    }
2075
2076    /**
2077     * Receives notifications when applications are added/removed.
2078     */
2079    private class ApplicationsIntentReceiver extends BroadcastReceiver {
2080        @Override
2081        public void onReceive(Context context, Intent intent) {
2082            final String action = intent.getAction();
2083            final String packageName = intent.getData().getSchemeSpecificPart();
2084            final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
2085
2086            if (LauncherModel.DEBUG_LOADERS) {
2087                d(LauncherModel.LOG_TAG, "application intent received: " + action +
2088                        ", replacing=" + replacing);
2089                d(LauncherModel.LOG_TAG, "  --> " + intent.getData());
2090            }
2091
2092            if (!Intent.ACTION_PACKAGE_CHANGED.equals(action)) {
2093                if (Intent.ACTION_PACKAGE_REMOVED.equals(action)) {
2094                    if (!replacing) {
2095                        removeShortcutsForPackage(packageName);
2096                        if (LauncherModel.DEBUG_LOADERS) {
2097                            d(LauncherModel.LOG_TAG, "  --> remove package");
2098                        }
2099                        sModel.removePackage(Launcher.this, packageName);
2100                    }
2101                    // else, we are replacing the package, so a PACKAGE_ADDED will be sent
2102                    // later, we will update the package at this time
2103                } else {
2104                    if (!replacing) {
2105                        if (LauncherModel.DEBUG_LOADERS) {
2106                            d(LauncherModel.LOG_TAG, "  --> add package");
2107                        }
2108                        sModel.addPackage(Launcher.this, packageName);
2109                    } else {
2110                        if (LauncherModel.DEBUG_LOADERS) {
2111                            d(LauncherModel.LOG_TAG, "  --> update package " + packageName);
2112                        }
2113                        sModel.updatePackage(Launcher.this, packageName);
2114                        updateShortcutsForPackage(packageName);
2115                    }
2116                }
2117                removeDialog(DIALOG_CREATE_SHORTCUT);
2118            } else {
2119                if (LauncherModel.DEBUG_LOADERS) {
2120                    d(LauncherModel.LOG_TAG, "  --> sync package " + packageName);
2121                }
2122                sModel.syncPackage(Launcher.this, packageName);
2123            }
2124        }
2125    }
2126
2127    /**
2128     * Receives notifications whenever the user favorites have changed.
2129     */
2130    private class FavoritesChangeObserver extends ContentObserver {
2131        public FavoritesChangeObserver() {
2132            super(new Handler());
2133        }
2134
2135        @Override
2136        public void onChange(boolean selfChange) {
2137            onFavoritesChanged();
2138        }
2139    }
2140
2141    /**
2142     * Receives intents from other applications to change the wallpaper.
2143     */
2144    private static class WallpaperIntentReceiver extends BroadcastReceiver {
2145        private final Application mApplication;
2146        private WeakReference<Launcher> mLauncher;
2147
2148        WallpaperIntentReceiver(Application application, Launcher launcher) {
2149            mApplication = application;
2150            setLauncher(launcher);
2151        }
2152
2153        void setLauncher(Launcher launcher) {
2154            mLauncher = new WeakReference<Launcher>(launcher);
2155        }
2156
2157        @Override
2158        public void onReceive(Context context, Intent intent) {
2159            // Load the wallpaper from the ApplicationContext and store it locally
2160            // until the Launcher Activity is ready to use it
2161            final Drawable drawable = mApplication.getWallpaper();
2162            if (drawable instanceof BitmapDrawable) {
2163                sWallpaper = ((BitmapDrawable) drawable).getBitmap();
2164            } else {
2165                throw new IllegalStateException("The wallpaper must be a BitmapDrawable.");
2166            }
2167
2168            // If Launcher is alive, notify we have a new wallpaper
2169            if (mLauncher != null) {
2170                final Launcher launcher = mLauncher.get();
2171                if (launcher != null) {
2172                    launcher.loadWallpaper();
2173                }
2174            }
2175        }
2176    }
2177
2178    private static class DesktopBinder extends Handler implements MessageQueue.IdleHandler {
2179        static final int MESSAGE_BIND_ITEMS = 0x1;
2180        static final int MESSAGE_BIND_APPWIDGETS = 0x2;
2181        static final int MESSAGE_BIND_DRAWER = 0x3;
2182
2183        // Number of items to bind in every pass
2184        static final int ITEMS_COUNT = 6;
2185
2186        private final ArrayList<ItemInfo> mShortcuts;
2187        private final LinkedList<LauncherAppWidgetInfo> mAppWidgets;
2188        private final ApplicationsAdapter mDrawerAdapter;
2189        private final WeakReference<Launcher> mLauncher;
2190
2191        public boolean mTerminate = false;
2192
2193        DesktopBinder(Launcher launcher, ArrayList<ItemInfo> shortcuts,
2194                ArrayList<LauncherAppWidgetInfo> appWidgets,
2195                ApplicationsAdapter drawerAdapter) {
2196
2197            mLauncher = new WeakReference<Launcher>(launcher);
2198            mShortcuts = shortcuts;
2199            mDrawerAdapter = drawerAdapter;
2200
2201            // Sort widgets so active workspace is bound first
2202            final int currentScreen = launcher.mWorkspace.getCurrentScreen();
2203            final int size = appWidgets.size();
2204            mAppWidgets = new LinkedList<LauncherAppWidgetInfo>();
2205
2206            for (int i = 0; i < size; i++) {
2207                LauncherAppWidgetInfo appWidgetInfo = appWidgets.get(i);
2208                if (appWidgetInfo.screen == currentScreen) {
2209                    mAppWidgets.addFirst(appWidgetInfo);
2210                } else {
2211                    mAppWidgets.addLast(appWidgetInfo);
2212                }
2213            }
2214        }
2215
2216        public void startBindingItems() {
2217            obtainMessage(MESSAGE_BIND_ITEMS, 0, mShortcuts.size()).sendToTarget();
2218        }
2219
2220        public void startBindingDrawer() {
2221            obtainMessage(MESSAGE_BIND_DRAWER).sendToTarget();
2222        }
2223
2224        public void startBindingAppWidgetsWhenIdle() {
2225            // Ask for notification when message queue becomes idle
2226            final MessageQueue messageQueue = Looper.myQueue();
2227            messageQueue.addIdleHandler(this);
2228        }
2229
2230        public boolean queueIdle() {
2231            // Queue is idle, so start binding items
2232            startBindingAppWidgets();
2233            return false;
2234        }
2235
2236        public void startBindingAppWidgets() {
2237            obtainMessage(MESSAGE_BIND_APPWIDGETS).sendToTarget();
2238        }
2239
2240        @Override
2241        public void handleMessage(Message msg) {
2242            Launcher launcher = mLauncher.get();
2243            if (launcher == null || mTerminate) {
2244                return;
2245            }
2246
2247            switch (msg.what) {
2248                case MESSAGE_BIND_ITEMS: {
2249                    launcher.bindItems(this, mShortcuts, msg.arg1, msg.arg2);
2250                    break;
2251                }
2252                case MESSAGE_BIND_DRAWER: {
2253                    launcher.bindDrawer(this, mDrawerAdapter);
2254                    break;
2255                }
2256                case MESSAGE_BIND_APPWIDGETS: {
2257                    launcher.bindAppWidgets(this, mAppWidgets);
2258                    break;
2259                }
2260            }
2261        }
2262    }
2263}
2264