Launcher.java revision 49cdb1b18c12a81cac9817c4800e43d5b507e0c4 
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.Dialog;
22import android.app.ISearchManager;
23import android.app.SearchManager;
24import android.app.StatusBarManager;
25import android.app.WallpaperManager;
26import android.content.ActivityNotFoundException;
27import android.content.BroadcastReceiver;
28import android.content.ComponentName;
29import android.content.ContentResolver;
30import android.content.Context;
31import android.content.DialogInterface;
32import android.content.Intent;
33import android.content.IntentFilter;
34import android.content.Intent.ShortcutIconResource;
35import android.content.pm.ActivityInfo;
36import android.content.pm.PackageManager;
37import android.content.pm.PackageManager.NameNotFoundException;
38import android.content.res.Configuration;
39import android.content.res.Resources;
40import android.database.ContentObserver;
41import android.graphics.Bitmap;
42import android.graphics.drawable.Drawable;
43import android.graphics.drawable.TransitionDrawable;
44import android.os.Bundle;
45import android.os.Handler;
46import android.os.Looper;
47import android.os.Message;
48import android.os.MessageQueue;
49import android.os.Parcelable;
50import android.os.RemoteException;
51import android.os.ServiceManager;
52import android.provider.LiveFolders;
53import android.text.Selection;
54import android.text.SpannableStringBuilder;
55import android.text.TextUtils;
56import android.text.method.TextKeyListener;
57import static android.util.Log.*;
58import android.view.Display;
59import android.view.KeyEvent;
60import android.view.LayoutInflater;
61import android.view.Menu;
62import android.view.MenuItem;
63import android.view.View;
64import android.view.ViewGroup;
65import android.view.WindowManager;
66import android.view.View.OnLongClickListener;
67import android.view.inputmethod.InputMethodManager;
68import android.widget.EditText;
69import android.widget.TextView;
70import android.widget.Toast;
71import android.appwidget.AppWidgetManager;
72import android.appwidget.AppWidgetProviderInfo;
73
74import java.lang.ref.WeakReference;
75import java.util.ArrayList;
76import java.util.LinkedList;
77import java.io.DataOutputStream;
78import java.io.FileNotFoundException;
79import java.io.IOException;
80import java.io.DataInputStream;
81
82/**
83 * Default launcher application.
84 */
85public final class Launcher extends Activity implements View.OnClickListener, OnLongClickListener {
86    static final String LOG_TAG = "Launcher";
87    static final boolean LOGD = false;
88
89    private static final boolean PROFILE_STARTUP = false;
90    private static final boolean PROFILE_ROTATE = false;
91    private static final boolean DEBUG_USER_INTERFACE = false;
92
93    private static final int WALLPAPER_SCREENS_SPAN = 2;
94
95    private static final int MENU_GROUP_ADD = 1;
96    private static final int MENU_ADD = Menu.FIRST + 1;
97    private static final int MENU_WALLPAPER_SETTINGS = MENU_ADD + 1;
98    private static final int MENU_SEARCH = MENU_WALLPAPER_SETTINGS + 1;
99    private static final int MENU_NOTIFICATIONS = MENU_SEARCH + 1;
100    private static final int MENU_SETTINGS = MENU_NOTIFICATIONS + 1;
101
102    private static final int REQUEST_CREATE_SHORTCUT = 1;
103    private static final int REQUEST_CREATE_LIVE_FOLDER = 4;
104    private static final int REQUEST_CREATE_APPWIDGET = 5;
105    private static final int REQUEST_PICK_APPLICATION = 6;
106    private static final int REQUEST_PICK_SHORTCUT = 7;
107    private static final int REQUEST_PICK_LIVE_FOLDER = 8;
108    private static final int REQUEST_PICK_APPWIDGET = 9;
109
110    static final String EXTRA_SHORTCUT_DUPLICATE = "duplicate";
111
112    static final String EXTRA_CUSTOM_WIDGET = "custom_widget";
113    static final String SEARCH_WIDGET = "search_widget";
114
115    static final int SCREEN_COUNT = 3;
116    static final int DEFAULT_SCREN = 1;
117    static final int NUMBER_CELLS_X = 4;
118    static final int NUMBER_CELLS_Y = 4;
119
120    static final int DIALOG_ALL_APPS = 1;
121    static final int DIALOG_CREATE_SHORTCUT = 2;
122    static final int DIALOG_RENAME_FOLDER = 3;
123
124    private static final String PREFERENCES = "launcher.preferences";
125
126    // Type: int
127    private static final String RUNTIME_STATE_CURRENT_SCREEN = "launcher.current_screen";
128    // Type: boolean
129    private static final String RUNTIME_STATE_ALL_APPS_FOLDER = "launcher.all_apps_folder";
130    // Type: long
131    private static final String RUNTIME_STATE_USER_FOLDERS = "launcher.user_folder";
132    // Type: int
133    private static final String RUNTIME_STATE_PENDING_ADD_SCREEN = "launcher.add_screen";
134    // Type: int
135    private static final String RUNTIME_STATE_PENDING_ADD_CELL_X = "launcher.add_cellX";
136    // Type: int
137    private static final String RUNTIME_STATE_PENDING_ADD_CELL_Y = "launcher.add_cellY";
138    // Type: int
139    private static final String RUNTIME_STATE_PENDING_ADD_SPAN_X = "launcher.add_spanX";
140    // Type: int
141    private static final String RUNTIME_STATE_PENDING_ADD_SPAN_Y = "launcher.add_spanY";
142    // Type: int
143    private static final String RUNTIME_STATE_PENDING_ADD_COUNT_X = "launcher.add_countX";
144    // Type: int
145    private static final String RUNTIME_STATE_PENDING_ADD_COUNT_Y = "launcher.add_countY";
146    // Type: int[]
147    private static final String RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS = "launcher.add_occupied_cells";
148    // Type: boolean
149    private static final String RUNTIME_STATE_PENDING_FOLDER_RENAME = "launcher.rename_folder";
150    // Type: long
151    private static final String RUNTIME_STATE_PENDING_FOLDER_RENAME_ID = "launcher.rename_folder_id";
152
153    private static final LauncherModel sModel = new LauncherModel();
154
155    private static final Object sLock = new Object();
156    private static int sScreen = DEFAULT_SCREN;
157
158    private final BroadcastReceiver mApplicationsReceiver = new ApplicationsIntentReceiver();
159    private final ContentObserver mObserver = new FavoritesChangeObserver();
160
161    private LayoutInflater mInflater;
162
163    private DragController mDragController;
164    private Workspace mWorkspace;
165
166    private AppWidgetManager mAppWidgetManager;
167    private LauncherAppWidgetHost mAppWidgetHost;
168
169    static final int APPWIDGET_HOST_ID = 1024;
170
171    private CellLayout.CellInfo mAddItemCellInfo;
172    private CellLayout.CellInfo mMenuAddInfo;
173    private final int[] mCellCoordinates = new int[2];
174    private FolderInfo mFolderInfo;
175
176    private AllAppsDialog mAllAppsDialog;
177    private HandleView mHandleView;
178    private AllAppsView mAllAppsGrid; // TODO: put this into AllAppsDialog
179
180    private boolean mDesktopLocked = true;
181    private Bundle mSavedState;
182
183    private SpannableStringBuilder mDefaultKeySsb = null;
184
185    private boolean mDestroyed;
186
187    private boolean mIsNewIntent;
188
189    private boolean mRestoring;
190    private boolean mWaitingForResult;
191    private boolean mLocaleChanged;
192
193    private boolean mHomeDown;
194    private boolean mBackDown;
195
196    private Bundle mSavedInstanceState;
197
198    private DesktopBinder mBinder;
199
200    @Override
201    protected void onCreate(Bundle savedInstanceState) {
202        super.onCreate(savedInstanceState);
203
204        mInflater = getLayoutInflater();
205
206        mAppWidgetManager = AppWidgetManager.getInstance(this);
207
208        mAppWidgetHost = new LauncherAppWidgetHost(this, APPWIDGET_HOST_ID);
209        mAppWidgetHost.startListening();
210
211        if (PROFILE_STARTUP) {
212            android.os.Debug.startMethodTracing("/sdcard/launcher");
213        }
214
215        checkForLocaleChange();
216        setWallpaperDimension();
217
218        setContentView(R.layout.launcher);
219        setupViews();
220
221        mAllAppsDialog = new AllAppsDialog(this);
222        mAllAppsDialog.lock();
223
224        registerIntentReceivers();
225        registerContentObservers();
226
227        mSavedState = savedInstanceState;
228        restoreState(mSavedState);
229
230        if (PROFILE_STARTUP) {
231            android.os.Debug.stopMethodTracing();
232        }
233
234        if (!mRestoring) {
235            startLoaders();
236        }
237
238        // For handling default keys
239        mDefaultKeySsb = new SpannableStringBuilder();
240        Selection.setSelection(mDefaultKeySsb, 0);
241    }
242
243    private void checkForLocaleChange() {
244        final LocaleConfiguration localeConfiguration = new LocaleConfiguration();
245        readConfiguration(this, localeConfiguration);
246
247        final Configuration configuration = getResources().getConfiguration();
248
249        final String previousLocale = localeConfiguration.locale;
250        final String locale = configuration.locale.toString();
251
252        final int previousMcc = localeConfiguration.mcc;
253        final int mcc = configuration.mcc;
254
255        final int previousMnc = localeConfiguration.mnc;
256        final int mnc = configuration.mnc;
257
258        mLocaleChanged = !locale.equals(previousLocale) || mcc != previousMcc || mnc != previousMnc;
259
260        if (mLocaleChanged) {
261            localeConfiguration.locale = locale;
262            localeConfiguration.mcc = mcc;
263            localeConfiguration.mnc = mnc;
264
265            writeConfiguration(this, localeConfiguration);
266        }
267    }
268
269    private static class LocaleConfiguration {
270        public String locale;
271        public int mcc = -1;
272        public int mnc = -1;
273    }
274
275    private static void readConfiguration(Context context, LocaleConfiguration configuration) {
276        DataInputStream in = null;
277        try {
278            in = new DataInputStream(context.openFileInput(PREFERENCES));
279            configuration.locale = in.readUTF();
280            configuration.mcc = in.readInt();
281            configuration.mnc = in.readInt();
282        } catch (FileNotFoundException e) {
283            // Ignore
284        } catch (IOException e) {
285            // Ignore
286        } finally {
287            if (in != null) {
288                try {
289                    in.close();
290                } catch (IOException e) {
291                    // Ignore
292                }
293            }
294        }
295    }
296
297    private static void writeConfiguration(Context context, LocaleConfiguration configuration) {
298        DataOutputStream out = null;
299        try {
300            out = new DataOutputStream(context.openFileOutput(PREFERENCES, MODE_PRIVATE));
301            out.writeUTF(configuration.locale);
302            out.writeInt(configuration.mcc);
303            out.writeInt(configuration.mnc);
304            out.flush();
305        } catch (FileNotFoundException e) {
306            // Ignore
307        } catch (IOException e) {
308            //noinspection ResultOfMethodCallIgnored
309            context.getFileStreamPath(PREFERENCES).delete();
310        } finally {
311            if (out != null) {
312                try {
313                    out.close();
314                } catch (IOException e) {
315                    // Ignore
316                }
317            }
318        }
319    }
320
321    static int getScreen() {
322        synchronized (sLock) {
323            return sScreen;
324        }
325    }
326
327    static void setScreen(int screen) {
328        synchronized (sLock) {
329            sScreen = screen;
330        }
331    }
332
333    private void startLoaders() {
334        boolean loadApplications = sModel.loadApplications(true, this, mLocaleChanged);
335        sModel.loadUserItems(!mLocaleChanged, this, mLocaleChanged, loadApplications);
336
337        mRestoring = false;
338    }
339
340    private void setWallpaperDimension() {
341        WallpaperManager wpm = (WallpaperManager)getSystemService(WALLPAPER_SERVICE);
342
343        Display display = getWindowManager().getDefaultDisplay();
344        boolean isPortrait = display.getWidth() < display.getHeight();
345
346        final int width = isPortrait ? display.getWidth() : display.getHeight();
347        final int height = isPortrait ? display.getHeight() : display.getWidth();
348        wpm.suggestDesiredDimensions(width * WALLPAPER_SCREENS_SPAN, height);
349    }
350
351    @Override
352    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
353        mWaitingForResult = false;
354
355        // The pattern used here is that a user PICKs a specific application,
356        // which, depending on the target, might need to CREATE the actual target.
357
358        // For example, the user would PICK_SHORTCUT for "Music playlist", and we
359        // launch over to the Music app to actually CREATE_SHORTCUT.
360
361        if (resultCode == RESULT_OK && mAddItemCellInfo != null) {
362            switch (requestCode) {
363                case REQUEST_PICK_APPLICATION:
364                    completeAddApplication(this, data, mAddItemCellInfo, !mDesktopLocked);
365                    break;
366                case REQUEST_PICK_SHORTCUT:
367                    processShortcut(data, REQUEST_PICK_APPLICATION, REQUEST_CREATE_SHORTCUT);
368                    break;
369                case REQUEST_CREATE_SHORTCUT:
370                    completeAddShortcut(data, mAddItemCellInfo, !mDesktopLocked);
371                    break;
372                case REQUEST_PICK_LIVE_FOLDER:
373                    addLiveFolder(data);
374                    break;
375                case REQUEST_CREATE_LIVE_FOLDER:
376                    completeAddLiveFolder(data, mAddItemCellInfo, !mDesktopLocked);
377                    break;
378                case REQUEST_PICK_APPWIDGET:
379                    addAppWidget(data);
380                    break;
381                case REQUEST_CREATE_APPWIDGET:
382                    completeAddAppWidget(data, mAddItemCellInfo, !mDesktopLocked);
383                    break;
384            }
385        } else if (requestCode == REQUEST_PICK_APPWIDGET &&
386                resultCode == RESULT_CANCELED && data != null) {
387            // Clean up the appWidgetId if we canceled
388            int appWidgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
389            if (appWidgetId != -1) {
390                mAppWidgetHost.deleteAppWidgetId(appWidgetId);
391            }
392        }
393    }
394
395    @Override
396    protected void onResume() {
397        super.onResume();
398
399        if (mRestoring) {
400            startLoaders();
401        }
402
403        // If this was a new intent (i.e., the mIsNewIntent flag got set to true by
404        // onNewIntent), then close the search dialog if needed, because it probably
405        // came from the user pressing 'home' (rather than, for example, pressing 'back').
406        if (mIsNewIntent) {
407            // Post to a handler so that this happens after the search dialog tries to open
408            // itself again.
409            mWorkspace.post(new Runnable() {
410                public void run() {
411                    ISearchManager searchManagerService = ISearchManager.Stub.asInterface(
412                            ServiceManager.getService(Context.SEARCH_SERVICE));
413                    try {
414                        searchManagerService.stopSearch();
415                    } catch (RemoteException e) {
416                        e(LOG_TAG, "error stopping search", e);
417                    }
418                }
419            });
420        }
421
422        mIsNewIntent = false;
423    }
424
425    @Override
426    protected void onPause() {
427        super.onPause();
428        closeAllAppsDialog(false);
429    }
430
431    @Override
432    public Object onRetainNonConfigurationInstance() {
433        // Flag any binder to stop early before switching
434        if (mBinder != null) {
435            mBinder.mTerminate = true;
436        }
437
438        if (PROFILE_ROTATE) {
439            android.os.Debug.startMethodTracing("/sdcard/launcher-rotate");
440        }
441        return null;
442    }
443
444    private boolean acceptFilter() {
445        final InputMethodManager inputManager = (InputMethodManager)
446                getSystemService(Context.INPUT_METHOD_SERVICE);
447        return !inputManager.isFullscreenMode();
448    }
449
450    @Override
451    public boolean onKeyDown(int keyCode, KeyEvent event) {
452        boolean handled = super.onKeyDown(keyCode, event);
453        if (!handled && acceptFilter() && keyCode != KeyEvent.KEYCODE_ENTER) {
454            boolean gotKey = TextKeyListener.getInstance().onKeyDown(mWorkspace, mDefaultKeySsb,
455                    keyCode, event);
456            if (gotKey && mDefaultKeySsb != null && mDefaultKeySsb.length() > 0) {
457                // something usable has been typed - start a search
458                // the typed text will be retrieved and cleared by
459                // showSearchDialog()
460                // If there are multiple keystrokes before the search dialog takes focus,
461                // onSearchRequested() will be called for every keystroke,
462                // but it is idempotent, so it's fine.
463                return onSearchRequested();
464            }
465        }
466
467        return handled;
468    }
469
470    private String getTypedText() {
471        return mDefaultKeySsb.toString();
472    }
473
474    private void clearTypedText() {
475        mDefaultKeySsb.clear();
476        mDefaultKeySsb.clearSpans();
477        Selection.setSelection(mDefaultKeySsb, 0);
478    }
479
480    /**
481     * Restores the previous state, if it exists.
482     *
483     * @param savedState The previous state.
484     */
485    private void restoreState(Bundle savedState) {
486        if (savedState == null) {
487            return;
488        }
489
490        final int currentScreen = savedState.getInt(RUNTIME_STATE_CURRENT_SCREEN, -1);
491        if (currentScreen > -1) {
492            mWorkspace.setCurrentScreen(currentScreen);
493        }
494
495        final int addScreen = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SCREEN, -1);
496        if (addScreen > -1) {
497            mAddItemCellInfo = new CellLayout.CellInfo();
498            final CellLayout.CellInfo addItemCellInfo = mAddItemCellInfo;
499            addItemCellInfo.valid = true;
500            addItemCellInfo.screen = addScreen;
501            addItemCellInfo.cellX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_X);
502            addItemCellInfo.cellY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_Y);
503            addItemCellInfo.spanX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_X);
504            addItemCellInfo.spanY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y);
505            addItemCellInfo.findVacantCellsFromOccupied(
506                    savedState.getBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS),
507                    savedState.getInt(RUNTIME_STATE_PENDING_ADD_COUNT_X),
508                    savedState.getInt(RUNTIME_STATE_PENDING_ADD_COUNT_Y));
509            mRestoring = true;
510        }
511
512        boolean renameFolder = savedState.getBoolean(RUNTIME_STATE_PENDING_FOLDER_RENAME, false);
513        if (renameFolder) {
514            long id = savedState.getLong(RUNTIME_STATE_PENDING_FOLDER_RENAME_ID);
515            mFolderInfo = sModel.getFolderById(this, id);
516            mRestoring = true;
517        }
518    }
519
520    /**
521     * Finds all the views we need and configure them properly.
522     */
523    private void setupViews() {
524        mDragController = new DragController(this);
525        DragController dragController = mDragController;
526
527        DragLayer dragLayer = (DragLayer) findViewById(R.id.drag_layer);
528        dragLayer.setDragController(dragController);
529
530        mWorkspace = (Workspace) dragLayer.findViewById(R.id.workspace);
531        final Workspace workspace = mWorkspace;
532
533        final DeleteZone deleteZone = (DeleteZone) dragLayer.findViewById(R.id.delete_zone);
534
535        mHandleView = (HandleView) findViewById(R.id.all_apps);
536        mHandleView.setLauncher(this);
537        mHandleView.setOnClickListener(this);
538        TransitionDrawable handleIcon = (TransitionDrawable) mHandleView.getDrawable();
539        handleIcon.setCrossFadeEnabled(true);
540
541        workspace.setOnLongClickListener(this);
542        workspace.setDragController(dragController);
543        workspace.setLauncher(this);
544
545        deleteZone.setLauncher(this);
546        deleteZone.setDragController(dragController);
547        deleteZone.setHandle(mHandleView);
548
549        dragController.setDragScoller(workspace);
550        dragController.setDragListener(deleteZone);
551        dragController.setScrollView(dragLayer);
552
553        // The order here is bottom to top.
554        dragController.addDropTarget(workspace);
555        dragController.addDropTarget(deleteZone);
556    }
557
558    /**
559     * Creates a view representing a shortcut.
560     *
561     * @param info The data structure describing the shortcut.
562     *
563     * @return A View inflated from R.layout.application.
564     */
565    View createShortcut(ApplicationInfo info) {
566        return createShortcut(R.layout.application,
567                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), info);
568    }
569
570    /**
571     * Creates a view representing a shortcut inflated from the specified resource.
572     *
573     * @param layoutResId The id of the XML layout used to create the shortcut.
574     * @param parent The group the shortcut belongs to.
575     * @param info The data structure describing the shortcut.
576     *
577     * @return A View inflated from layoutResId.
578     */
579    View createShortcut(int layoutResId, ViewGroup parent, ApplicationInfo info) {
580        TextView favorite = (TextView) mInflater.inflate(layoutResId, parent, false);
581
582        if (!info.filtered) {
583            info.icon = Utilities.createIconThumbnail(info.icon, this);
584            info.filtered = true;
585        }
586
587        favorite.setCompoundDrawablesWithIntrinsicBounds(null, info.icon, null, null);
588        favorite.setText(info.title);
589        favorite.setTag(info);
590        favorite.setOnClickListener(this);
591
592        return favorite;
593    }
594
595    /**
596     * Add an application shortcut to the workspace.
597     *
598     * @param data The intent describing the application.
599     * @param cellInfo The position on screen where to create the shortcut.
600     */
601    void completeAddApplication(Context context, Intent data, CellLayout.CellInfo cellInfo,
602            boolean insertAtFirst) {
603        cellInfo.screen = mWorkspace.getCurrentScreen();
604        if (!findSingleSlot(cellInfo)) return;
605
606        final ApplicationInfo info = infoFromApplicationIntent(context, data);
607        if (info != null) {
608            mWorkspace.addApplicationShortcut(info, cellInfo, insertAtFirst);
609        }
610    }
611
612    private static ApplicationInfo infoFromApplicationIntent(Context context, Intent data) {
613        ComponentName component = data.getComponent();
614        PackageManager packageManager = context.getPackageManager();
615        ActivityInfo activityInfo = null;
616        try {
617            activityInfo = packageManager.getActivityInfo(component, 0 /* no flags */);
618        } catch (NameNotFoundException e) {
619            e(LOG_TAG, "Couldn't find ActivityInfo for selected application", e);
620        }
621
622        if (activityInfo != null) {
623            ApplicationInfo itemInfo = new ApplicationInfo();
624
625            itemInfo.title = activityInfo.loadLabel(packageManager);
626            if (itemInfo.title == null) {
627                itemInfo.title = activityInfo.name;
628            }
629
630            itemInfo.setActivity(component, Intent.FLAG_ACTIVITY_NEW_TASK |
631                    Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
632            itemInfo.icon = activityInfo.loadIcon(packageManager);
633            itemInfo.container = ItemInfo.NO_ID;
634
635            return itemInfo;
636        }
637
638        return null;
639    }
640
641    /**
642     * Add a shortcut to the workspace.
643     *
644     * @param data The intent describing the shortcut.
645     * @param cellInfo The position on screen where to create the shortcut.
646     * @param insertAtFirst
647     */
648    private void completeAddShortcut(Intent data, CellLayout.CellInfo cellInfo,
649            boolean insertAtFirst) {
650        cellInfo.screen = mWorkspace.getCurrentScreen();
651        if (!findSingleSlot(cellInfo)) return;
652
653        final ApplicationInfo info = addShortcut(this, data, cellInfo, false);
654
655        if (!mRestoring) {
656            sModel.addDesktopItem(info);
657
658            final View view = createShortcut(info);
659            mWorkspace.addInCurrentScreen(view, cellInfo.cellX, cellInfo.cellY, 1, 1, insertAtFirst);
660        } else if (sModel.isDesktopLoaded()) {
661            sModel.addDesktopItem(info);
662        }
663    }
664
665
666    /**
667     * Add a widget to the workspace.
668     *
669     * @param data The intent describing the appWidgetId.
670     * @param cellInfo The position on screen where to create the widget.
671     */
672    private void completeAddAppWidget(Intent data, CellLayout.CellInfo cellInfo,
673            boolean insertAtFirst) {
674
675        Bundle extras = data.getExtras();
676        int appWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
677
678        d(LOG_TAG, "dumping extras content="+extras.toString());
679
680        AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
681
682        // Calculate the grid spans needed to fit this widget
683        CellLayout layout = (CellLayout) mWorkspace.getChildAt(cellInfo.screen);
684        int[] spans = layout.rectToCell(appWidgetInfo.minWidth, appWidgetInfo.minHeight);
685
686        // Try finding open space on Launcher screen
687        final int[] xy = mCellCoordinates;
688        if (!findSlot(cellInfo, xy, spans[0], spans[1])) return;
689
690        // Build Launcher-specific widget info and save to database
691        LauncherAppWidgetInfo launcherInfo = new LauncherAppWidgetInfo(appWidgetId);
692        launcherInfo.spanX = spans[0];
693        launcherInfo.spanY = spans[1];
694
695        LauncherModel.addItemToDatabase(this, launcherInfo,
696                LauncherSettings.Favorites.CONTAINER_DESKTOP,
697                mWorkspace.getCurrentScreen(), xy[0], xy[1], false);
698
699        if (!mRestoring) {
700            sModel.addDesktopAppWidget(launcherInfo);
701
702            // Perform actual inflation because we're live
703            launcherInfo.hostView = mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
704
705            launcherInfo.hostView.setAppWidget(appWidgetId, appWidgetInfo);
706            launcherInfo.hostView.setTag(launcherInfo);
707
708            mWorkspace.addInCurrentScreen(launcherInfo.hostView, xy[0], xy[1],
709                    launcherInfo.spanX, launcherInfo.spanY, insertAtFirst);
710        } else if (sModel.isDesktopLoaded()) {
711            sModel.addDesktopAppWidget(launcherInfo);
712        }
713    }
714
715    public LauncherAppWidgetHost getAppWidgetHost() {
716        return mAppWidgetHost;
717    }
718
719    static ApplicationInfo addShortcut(Context context, Intent data,
720            CellLayout.CellInfo cellInfo, boolean notify) {
721
722        final ApplicationInfo info = infoFromShortcutIntent(context, data);
723        LauncherModel.addItemToDatabase(context, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
724                cellInfo.screen, cellInfo.cellX, cellInfo.cellY, notify);
725
726        return info;
727    }
728
729    private static ApplicationInfo infoFromShortcutIntent(Context context, Intent data) {
730        Intent intent = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_INTENT);
731        String name = data.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
732        Bitmap bitmap = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_ICON);
733
734        Drawable icon = null;
735        boolean filtered = false;
736        boolean customIcon = false;
737        ShortcutIconResource iconResource = null;
738
739        if (bitmap != null) {
740            icon = new FastBitmapDrawable(Utilities.createBitmapThumbnail(bitmap, context));
741            filtered = true;
742            customIcon = true;
743        } else {
744            Parcelable extra = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE);
745            if (extra != null && extra instanceof ShortcutIconResource) {
746                try {
747                    iconResource = (ShortcutIconResource) extra;
748                    final PackageManager packageManager = context.getPackageManager();
749                    Resources resources = packageManager.getResourcesForApplication(
750                            iconResource.packageName);
751                    final int id = resources.getIdentifier(iconResource.resourceName, null, null);
752                    icon = resources.getDrawable(id);
753                } catch (Exception e) {
754                    w(LOG_TAG, "Could not load shortcut icon: " + extra);
755                }
756            }
757        }
758
759        if (icon == null) {
760            icon = context.getPackageManager().getDefaultActivityIcon();
761        }
762
763        final ApplicationInfo info = new ApplicationInfo();
764        info.icon = icon;
765        info.filtered = filtered;
766        info.title = name;
767        info.intent = intent;
768        info.customIcon = customIcon;
769        info.iconResource = iconResource;
770
771        return info;
772    }
773
774    @Override
775    protected void onNewIntent(Intent intent) {
776        super.onNewIntent(intent);
777
778        // Close the menu
779        if (Intent.ACTION_MAIN.equals(intent.getAction())) {
780            getWindow().closeAllPanels();
781
782            // Set this flag so that onResume knows to close the search dialog if it's open,
783            // because this was a new intent (thus a press of 'home' or some such) rather than
784            // for example onResume being called when the user pressed the 'back' button.
785            mIsNewIntent = true;
786
787            try {
788                dismissDialog(DIALOG_CREATE_SHORTCUT);
789                // Unlock the workspace if the dialog was showing
790                mWorkspace.unlock();
791            } catch (Exception e) {
792                // An exception is thrown if the dialog is not visible, which is fine
793            }
794
795            try {
796                dismissDialog(DIALOG_RENAME_FOLDER);
797                // Unlock the workspace if the dialog was showing
798                mWorkspace.unlock();
799            } catch (Exception e) {
800                // An exception is thrown if the dialog is not visible, which is fine
801            }
802
803            if ((intent.getFlags() & Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT) !=
804                    Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT) {
805
806                if (!mWorkspace.isDefaultScreenShowing()) {
807                    mWorkspace.moveToDefaultScreen();
808                }
809
810                closeAllAppsDialog(true);
811
812                final View v = getWindow().peekDecorView();
813                if (v != null && v.getWindowToken() != null) {
814                    InputMethodManager imm = (InputMethodManager)getSystemService(
815                            INPUT_METHOD_SERVICE);
816                    imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
817                }
818            } else {
819                closeAllAppsDialog(false);
820            }
821        }
822    }
823
824    @Override
825    protected void onRestoreInstanceState(Bundle savedInstanceState) {
826        // Do not call super here
827        mSavedInstanceState = savedInstanceState;
828    }
829
830    @Override
831    protected void onSaveInstanceState(Bundle outState) {
832        outState.putInt(RUNTIME_STATE_CURRENT_SCREEN, mWorkspace.getCurrentScreen());
833
834        final ArrayList<Folder> folders = mWorkspace.getOpenFolders();
835        if (folders.size() > 0) {
836            final int count = folders.size();
837            long[] ids = new long[count];
838            for (int i = 0; i < count; i++) {
839                final FolderInfo info = folders.get(i).getInfo();
840                ids[i] = info.id;
841            }
842            outState.putLongArray(RUNTIME_STATE_USER_FOLDERS, ids);
843        } else {
844            super.onSaveInstanceState(outState);
845        }
846
847        final boolean isConfigurationChange = getChangingConfigurations() != 0;
848
849        // When the drawer is opened and we are saving the state because of a
850        // configuration change
851        if (mAllAppsDialog.isOpen && isConfigurationChange) {
852            outState.putBoolean(RUNTIME_STATE_ALL_APPS_FOLDER, true);
853        }
854
855        if (mAddItemCellInfo != null && mAddItemCellInfo.valid && mWaitingForResult) {
856            final CellLayout.CellInfo addItemCellInfo = mAddItemCellInfo;
857            final CellLayout layout = (CellLayout) mWorkspace.getChildAt(addItemCellInfo.screen);
858
859            outState.putInt(RUNTIME_STATE_PENDING_ADD_SCREEN, addItemCellInfo.screen);
860            outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_X, addItemCellInfo.cellX);
861            outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_Y, addItemCellInfo.cellY);
862            outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_X, addItemCellInfo.spanX);
863            outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y, addItemCellInfo.spanY);
864            outState.putInt(RUNTIME_STATE_PENDING_ADD_COUNT_X, layout.getCountX());
865            outState.putInt(RUNTIME_STATE_PENDING_ADD_COUNT_Y, layout.getCountY());
866            outState.putBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS,
867                   layout.getOccupiedCells());
868        }
869
870        if (mFolderInfo != null && mWaitingForResult) {
871            outState.putBoolean(RUNTIME_STATE_PENDING_FOLDER_RENAME, true);
872            outState.putLong(RUNTIME_STATE_PENDING_FOLDER_RENAME_ID, mFolderInfo.id);
873        }
874    }
875
876    @Override
877    public void onDestroy() {
878        mDestroyed = true;
879
880        super.onDestroy();
881
882        try {
883            mAppWidgetHost.stopListening();
884        } catch (NullPointerException ex) {
885            w(LOG_TAG, "problem while stopping AppWidgetHost during Launcher destruction", ex);
886        }
887
888        TextKeyListener.getInstance().release();
889
890        // TODO mAllAppsGrid.setAdapter(null);
891        sModel.unbind();
892        sModel.abortLoaders();
893
894        getContentResolver().unregisterContentObserver(mObserver);
895        unregisterReceiver(mApplicationsReceiver);
896    }
897
898    @Override
899    public void startActivityForResult(Intent intent, int requestCode) {
900        if (requestCode >= 0) mWaitingForResult = true;
901        super.startActivityForResult(intent, requestCode);
902    }
903
904    @Override
905    public void startSearch(String initialQuery, boolean selectInitialQuery,
906            Bundle appSearchData, boolean globalSearch) {
907
908        closeAllAppsDialog(false);
909
910        // Slide the search widget to the top, if it's on the current screen,
911        // otherwise show the search dialog immediately.
912        Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
913        if (searchWidget == null) {
914            showSearchDialog(initialQuery, selectInitialQuery, appSearchData, globalSearch);
915        } else {
916            searchWidget.startSearch(initialQuery, selectInitialQuery, appSearchData, globalSearch);
917            // show the currently typed text in the search widget while sliding
918            searchWidget.setQuery(getTypedText());
919        }
920    }
921
922    /**
923     * Show the search dialog immediately, without changing the search widget.
924     *
925     * @see Activity#startSearch(String, boolean, android.os.Bundle, boolean)
926     */
927    void showSearchDialog(String initialQuery, boolean selectInitialQuery,
928            Bundle appSearchData, boolean globalSearch) {
929
930        if (initialQuery == null) {
931            // Use any text typed in the launcher as the initial query
932            initialQuery = getTypedText();
933            clearTypedText();
934        }
935        if (appSearchData == null) {
936            appSearchData = new Bundle();
937            appSearchData.putString(SearchManager.SOURCE, "launcher-search");
938        }
939
940        final SearchManager searchManager =
941                (SearchManager) getSystemService(Context.SEARCH_SERVICE);
942
943        final Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
944        if (searchWidget != null) {
945            // This gets called when the user leaves the search dialog to go back to
946            // the Launcher.
947            searchManager.setOnCancelListener(new SearchManager.OnCancelListener() {
948                public void onCancel() {
949                    searchManager.setOnCancelListener(null);
950                    stopSearch();
951                }
952            });
953        }
954
955        searchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(),
956            appSearchData, globalSearch);
957    }
958
959    /**
960     * Cancel search dialog if it is open.
961     */
962    void stopSearch() {
963        // Close search dialog
964        SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
965        searchManager.stopSearch();
966        // Restore search widget to its normal position
967        Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
968        if (searchWidget != null) {
969            searchWidget.stopSearch(false);
970        }
971    }
972
973    @Override
974    public boolean onCreateOptionsMenu(Menu menu) {
975        if (mDesktopLocked) return false;
976
977        super.onCreateOptionsMenu(menu);
978        menu.add(MENU_GROUP_ADD, MENU_ADD, 0, R.string.menu_add)
979                .setIcon(android.R.drawable.ic_menu_add)
980                .setAlphabeticShortcut('A');
981        menu.add(0, MENU_WALLPAPER_SETTINGS, 0, R.string.menu_wallpaper)
982                 .setIcon(android.R.drawable.ic_menu_gallery)
983                 .setAlphabeticShortcut('W');
984        menu.add(0, MENU_SEARCH, 0, R.string.menu_search)
985                .setIcon(android.R.drawable.ic_search_category_default)
986                .setAlphabeticShortcut(SearchManager.MENU_KEY);
987        menu.add(0, MENU_NOTIFICATIONS, 0, R.string.menu_notifications)
988                .setIcon(com.android.internal.R.drawable.ic_menu_notifications)
989                .setAlphabeticShortcut('N');
990
991        final Intent settings = new Intent(android.provider.Settings.ACTION_SETTINGS);
992        settings.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
993                Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
994
995        menu.add(0, MENU_SETTINGS, 0, R.string.menu_settings)
996                .setIcon(android.R.drawable.ic_menu_preferences).setAlphabeticShortcut('P')
997                .setIntent(settings);
998
999        return true;
1000    }
1001
1002    @Override
1003    public boolean onPrepareOptionsMenu(Menu menu) {
1004        super.onPrepareOptionsMenu(menu);
1005
1006        mMenuAddInfo = mWorkspace.findAllVacantCells(null);
1007        menu.setGroupEnabled(MENU_GROUP_ADD, mMenuAddInfo != null && mMenuAddInfo.valid);
1008
1009        return true;
1010    }
1011
1012    @Override
1013    public boolean onOptionsItemSelected(MenuItem item) {
1014        switch (item.getItemId()) {
1015            case MENU_ADD:
1016                addItems();
1017                return true;
1018            case MENU_WALLPAPER_SETTINGS:
1019                startWallpaper();
1020                return true;
1021            case MENU_SEARCH:
1022                onSearchRequested();
1023                return true;
1024            case MENU_NOTIFICATIONS:
1025                showNotifications();
1026                return true;
1027        }
1028
1029        return super.onOptionsItemSelected(item);
1030    }
1031
1032    /**
1033     * Indicates that we want global search for this activity by setting the globalSearch
1034     * argument for {@link #startSearch} to true.
1035     */
1036
1037    @Override
1038    public boolean onSearchRequested() {
1039        startSearch(null, false, null, true);
1040        return true;
1041    }
1042
1043    private void addItems() {
1044        showAddDialog(mMenuAddInfo);
1045    }
1046
1047    private void removeShortcutsForPackage(String packageName) {
1048        if (packageName != null && packageName.length() > 0) {
1049            mWorkspace.removeShortcutsForPackage(packageName);
1050        }
1051    }
1052
1053    private void updateShortcutsForPackage(String packageName) {
1054        if (packageName != null && packageName.length() > 0) {
1055            mWorkspace.updateShortcutsForPackage(packageName);
1056        }
1057    }
1058
1059    void addAppWidget(Intent data) {
1060        // TODO: catch bad widget exception when sent
1061        int appWidgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
1062
1063        String customWidget = data.getStringExtra(EXTRA_CUSTOM_WIDGET);
1064        if (SEARCH_WIDGET.equals(customWidget)) {
1065            // We don't need this any more, since this isn't a real app widget.
1066            mAppWidgetHost.deleteAppWidgetId(appWidgetId);
1067            // add the search widget
1068            addSearch();
1069        } else {
1070            AppWidgetProviderInfo appWidget = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
1071
1072            if (appWidget.configure != null) {
1073                // Launch over to configure widget, if needed
1074                Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_CONFIGURE);
1075                intent.setComponent(appWidget.configure);
1076                intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
1077
1078                startActivityForResult(intent, REQUEST_CREATE_APPWIDGET);
1079            } else {
1080                // Otherwise just add it
1081                onActivityResult(REQUEST_CREATE_APPWIDGET, Activity.RESULT_OK, data);
1082            }
1083        }
1084    }
1085
1086    void addSearch() {
1087        final Widget info = Widget.makeSearch();
1088        final CellLayout.CellInfo cellInfo = mAddItemCellInfo;
1089
1090        final int[] xy = mCellCoordinates;
1091        final int spanX = info.spanX;
1092        final int spanY = info.spanY;
1093
1094        if (!findSlot(cellInfo, xy, spanX, spanY)) return;
1095
1096        sModel.addDesktopItem(info);
1097        LauncherModel.addItemToDatabase(this, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
1098        mWorkspace.getCurrentScreen(), xy[0], xy[1], false);
1099
1100        final View view = mInflater.inflate(info.layoutResource, null);
1101        view.setTag(info);
1102        Search search = (Search) view.findViewById(R.id.widget_search);
1103        search.setLauncher(this);
1104
1105        mWorkspace.addInCurrentScreen(view, xy[0], xy[1], info.spanX, spanY);
1106    }
1107
1108    void processShortcut(Intent intent, int requestCodeApplication, int requestCodeShortcut) {
1109        // Handle case where user selected "Applications"
1110        String applicationName = getResources().getString(R.string.group_applications);
1111        String shortcutName = intent.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
1112
1113        if (applicationName != null && applicationName.equals(shortcutName)) {
1114            Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
1115            mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
1116
1117            Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1118            pickIntent.putExtra(Intent.EXTRA_INTENT, mainIntent);
1119            startActivityForResult(pickIntent, requestCodeApplication);
1120        } else {
1121            startActivityForResult(intent, requestCodeShortcut);
1122        }
1123    }
1124
1125    void addLiveFolder(Intent intent) {
1126        // Handle case where user selected "Folder"
1127        String folderName = getResources().getString(R.string.group_folder);
1128        String shortcutName = intent.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
1129
1130        if (folderName != null && folderName.equals(shortcutName)) {
1131            addFolder(!mDesktopLocked);
1132        } else {
1133            startActivityForResult(intent, REQUEST_CREATE_LIVE_FOLDER);
1134        }
1135    }
1136
1137    void addFolder(boolean insertAtFirst) {
1138        UserFolderInfo folderInfo = new UserFolderInfo();
1139        folderInfo.title = getText(R.string.folder_name);
1140
1141        CellLayout.CellInfo cellInfo = mAddItemCellInfo;
1142        cellInfo.screen = mWorkspace.getCurrentScreen();
1143        if (!findSingleSlot(cellInfo)) return;
1144
1145        // Update the model
1146        LauncherModel.addItemToDatabase(this, folderInfo, LauncherSettings.Favorites.CONTAINER_DESKTOP,
1147                mWorkspace.getCurrentScreen(), cellInfo.cellX, cellInfo.cellY, false);
1148        sModel.addDesktopItem(folderInfo);
1149        sModel.addFolder(folderInfo);
1150
1151        // Create the view
1152        FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon, this,
1153                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), folderInfo);
1154        mWorkspace.addInCurrentScreen(newFolder,
1155                cellInfo.cellX, cellInfo.cellY, 1, 1, insertAtFirst);
1156    }
1157
1158    private void completeAddLiveFolder(Intent data, CellLayout.CellInfo cellInfo,
1159            boolean insertAtFirst) {
1160        cellInfo.screen = mWorkspace.getCurrentScreen();
1161        if (!findSingleSlot(cellInfo)) return;
1162
1163        final LiveFolderInfo info = addLiveFolder(this, data, cellInfo, false);
1164
1165        if (!mRestoring) {
1166            sModel.addDesktopItem(info);
1167
1168            final View view = LiveFolderIcon.fromXml(R.layout.live_folder_icon, this,
1169                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), info);
1170            mWorkspace.addInCurrentScreen(view, cellInfo.cellX, cellInfo.cellY, 1, 1, insertAtFirst);
1171        } else if (sModel.isDesktopLoaded()) {
1172            sModel.addDesktopItem(info);
1173        }
1174    }
1175
1176    static LiveFolderInfo addLiveFolder(Context context, Intent data,
1177            CellLayout.CellInfo cellInfo, boolean notify) {
1178
1179        Intent baseIntent = data.getParcelableExtra(LiveFolders.EXTRA_LIVE_FOLDER_BASE_INTENT);
1180        String name = data.getStringExtra(LiveFolders.EXTRA_LIVE_FOLDER_NAME);
1181
1182        Drawable icon = null;
1183        boolean filtered = false;
1184        Intent.ShortcutIconResource iconResource = null;
1185
1186        Parcelable extra = data.getParcelableExtra(LiveFolders.EXTRA_LIVE_FOLDER_ICON);
1187        if (extra != null && extra instanceof Intent.ShortcutIconResource) {
1188            try {
1189                iconResource = (Intent.ShortcutIconResource) extra;
1190                final PackageManager packageManager = context.getPackageManager();
1191                Resources resources = packageManager.getResourcesForApplication(
1192                        iconResource.packageName);
1193                final int id = resources.getIdentifier(iconResource.resourceName, null, null);
1194                icon = resources.getDrawable(id);
1195            } catch (Exception e) {
1196                w(LOG_TAG, "Could not load live folder icon: " + extra);
1197            }
1198        }
1199
1200        if (icon == null) {
1201            icon = context.getResources().getDrawable(R.drawable.ic_launcher_folder);
1202        }
1203
1204        final LiveFolderInfo info = new LiveFolderInfo();
1205        info.icon = icon;
1206        info.filtered = filtered;
1207        info.title = name;
1208        info.iconResource = iconResource;
1209        info.uri = data.getData();
1210        info.baseIntent = baseIntent;
1211        info.displayMode = data.getIntExtra(LiveFolders.EXTRA_LIVE_FOLDER_DISPLAY_MODE,
1212                LiveFolders.DISPLAY_MODE_GRID);
1213
1214        LauncherModel.addItemToDatabase(context, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
1215                cellInfo.screen, cellInfo.cellX, cellInfo.cellY, notify);
1216        sModel.addFolder(info);
1217
1218        return info;
1219    }
1220
1221    private boolean findSingleSlot(CellLayout.CellInfo cellInfo) {
1222        final int[] xy = new int[2];
1223        if (findSlot(cellInfo, xy, 1, 1)) {
1224            cellInfo.cellX = xy[0];
1225            cellInfo.cellY = xy[1];
1226            return true;
1227        }
1228        return false;
1229    }
1230
1231    private boolean findSlot(CellLayout.CellInfo cellInfo, int[] xy, int spanX, int spanY) {
1232        if (!cellInfo.findCellForSpan(xy, spanX, spanY)) {
1233            boolean[] occupied = mSavedState != null ?
1234                    mSavedState.getBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS) : null;
1235            cellInfo = mWorkspace.findAllVacantCells(occupied);
1236            if (!cellInfo.findCellForSpan(xy, spanX, spanY)) {
1237                Toast.makeText(this, getString(R.string.out_of_space), Toast.LENGTH_SHORT).show();
1238                return false;
1239            }
1240        }
1241        return true;
1242    }
1243
1244    private void showNotifications() {
1245        final StatusBarManager statusBar = (StatusBarManager) getSystemService(STATUS_BAR_SERVICE);
1246        if (statusBar != null) {
1247            statusBar.expand();
1248        }
1249    }
1250
1251    private void startWallpaper() {
1252        final Intent pickWallpaper = new Intent(Intent.ACTION_SET_WALLPAPER);
1253        startActivity(Intent.createChooser(pickWallpaper, getString(R.string.chooser_wallpaper)));
1254    }
1255
1256    /**
1257     * Registers various intent receivers. The current implementation registers
1258     * only a wallpaper intent receiver to let other applications change the
1259     * wallpaper.
1260     */
1261    private void registerIntentReceivers() {
1262        IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED);
1263        filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
1264        filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
1265        filter.addDataScheme("package");
1266        registerReceiver(mApplicationsReceiver, filter);
1267    }
1268
1269    /**
1270     * Registers various content observers. The current implementation registers
1271     * only a favorites observer to keep track of the favorites applications.
1272     */
1273    private void registerContentObservers() {
1274        ContentResolver resolver = getContentResolver();
1275        resolver.registerContentObserver(LauncherSettings.Favorites.CONTENT_URI, true, mObserver);
1276    }
1277
1278    @Override
1279    public void onWindowFocusChanged(boolean hasFocus) {
1280        super.onWindowFocusChanged(hasFocus);
1281        if (!hasFocus) {
1282            mBackDown = mHomeDown = false;
1283        }
1284    }
1285
1286    @Override
1287    public boolean dispatchKeyEvent(KeyEvent event) {
1288        if (event.getAction() == KeyEvent.ACTION_DOWN) {
1289            switch (event.getKeyCode()) {
1290                case KeyEvent.KEYCODE_BACK:
1291                    mBackDown = true;
1292                    return true;
1293                case KeyEvent.KEYCODE_HOME:
1294                    mHomeDown = true;
1295                    return true;
1296            }
1297        } else if (event.getAction() == KeyEvent.ACTION_UP) {
1298            switch (event.getKeyCode()) {
1299                case KeyEvent.KEYCODE_BACK:
1300                    if (!event.isCanceled()) {
1301                        mWorkspace.dispatchKeyEvent(event);
1302                        if (mAllAppsDialog.isOpen) {
1303                            closeAllAppsDialog(true);
1304                        } else {
1305                            closeFolder();
1306                        }
1307                    }
1308                    mBackDown = false;
1309                    return true;
1310                case KeyEvent.KEYCODE_HOME:
1311                    mHomeDown = false;
1312                    return true;
1313            }
1314        }
1315
1316        return super.dispatchKeyEvent(event);
1317    }
1318
1319    private void closeFolder() {
1320        Folder folder = mWorkspace.getOpenFolder();
1321        if (folder != null) {
1322            closeFolder(folder);
1323        }
1324    }
1325
1326    void closeFolder(Folder folder) {
1327        folder.getInfo().opened = false;
1328        ViewGroup parent = (ViewGroup) folder.getParent();
1329        if (parent != null) {
1330            parent.removeView(folder);
1331            mDragController.removeDropTarget((DropTarget)folder);
1332        }
1333        folder.onClose();
1334    }
1335
1336    /**
1337     * When the notification that favorites have changed is received, requests
1338     * a favorites list refresh.
1339     */
1340    private void onFavoritesChanged() {
1341        mDesktopLocked = true;
1342        mAllAppsDialog.lock();
1343        sModel.loadUserItems(false, this, false, false);
1344    }
1345
1346    void onDesktopItemsLoaded() {
1347        if (mDestroyed) return;
1348        bindDesktopItems();
1349    }
1350
1351    /**
1352     * Refreshes the shortcuts shown on the workspace.
1353     */
1354    private void bindDesktopItems() {
1355        final ArrayList<ItemInfo> shortcuts = sModel.getDesktopItems();
1356        final ArrayList<LauncherAppWidgetInfo> appWidgets = sModel.getDesktopAppWidgets();
1357        final ApplicationsAdapter drawerAdapter = sModel.getApplicationsAdapter();
1358        if (shortcuts == null || appWidgets == null || drawerAdapter == null) {
1359            return;
1360        }
1361
1362        final Workspace workspace = mWorkspace;
1363        int count = workspace.getChildCount();
1364        for (int i = 0; i < count; i++) {
1365            ((ViewGroup) workspace.getChildAt(i)).removeAllViewsInLayout();
1366        }
1367
1368        if (DEBUG_USER_INTERFACE) {
1369            android.widget.Button finishButton = new android.widget.Button(this);
1370            finishButton.setText("Finish");
1371            workspace.addInScreen(finishButton, 1, 0, 0, 1, 1);
1372
1373            finishButton.setOnClickListener(new android.widget.Button.OnClickListener() {
1374                public void onClick(View v) {
1375                    finish();
1376                }
1377            });
1378        }
1379
1380        // Flag any old binder to terminate early
1381        if (mBinder != null) {
1382            mBinder.mTerminate = true;
1383        }
1384
1385        mBinder = new DesktopBinder(this, shortcuts, appWidgets, drawerAdapter);
1386        mBinder.startBindingItems();
1387    }
1388
1389    private void bindItems(Launcher.DesktopBinder binder,
1390            ArrayList<ItemInfo> shortcuts, int start, int count) {
1391
1392        final Workspace workspace = mWorkspace;
1393        final boolean desktopLocked = mDesktopLocked;
1394
1395        final int end = Math.min(start + DesktopBinder.ITEMS_COUNT, count);
1396        int i = start;
1397
1398        for ( ; i < end; i++) {
1399            final ItemInfo item = shortcuts.get(i);
1400            switch (item.itemType) {
1401                case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION:
1402                case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
1403                    final View shortcut = createShortcut((ApplicationInfo) item);
1404                    workspace.addInScreen(shortcut, item.screen, item.cellX, item.cellY, 1, 1,
1405                            !desktopLocked);
1406                    break;
1407                case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER:
1408                    final FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon, this,
1409                            (ViewGroup) workspace.getChildAt(workspace.getCurrentScreen()),
1410                            (UserFolderInfo) item);
1411                    workspace.addInScreen(newFolder, item.screen, item.cellX, item.cellY, 1, 1,
1412                            !desktopLocked);
1413                    break;
1414                case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER:
1415                    final FolderIcon newLiveFolder = LiveFolderIcon.fromXml(
1416                            R.layout.live_folder_icon, this,
1417                            (ViewGroup) workspace.getChildAt(workspace.getCurrentScreen()),
1418                            (LiveFolderInfo) item);
1419                    workspace.addInScreen(newLiveFolder, item.screen, item.cellX, item.cellY, 1, 1,
1420                            !desktopLocked);
1421                    break;
1422                case LauncherSettings.Favorites.ITEM_TYPE_WIDGET_SEARCH:
1423                    final int screen = workspace.getCurrentScreen();
1424                    final View view = mInflater.inflate(R.layout.widget_search,
1425                            (ViewGroup) workspace.getChildAt(screen), false);
1426
1427                    Search search = (Search) view.findViewById(R.id.widget_search);
1428                    search.setLauncher(this);
1429
1430                    final Widget widget = (Widget) item;
1431                    view.setTag(widget);
1432
1433                    workspace.addWidget(view, widget, !desktopLocked);
1434                    break;
1435            }
1436        }
1437
1438        workspace.requestLayout();
1439
1440        if (end >= count) {
1441            finishBindDesktopItems();
1442            binder.startBindingDrawer();
1443        } else {
1444            binder.obtainMessage(DesktopBinder.MESSAGE_BIND_ITEMS, i, count).sendToTarget();
1445        }
1446    }
1447
1448    private void finishBindDesktopItems() {
1449        if (mSavedState != null) {
1450            if (!mWorkspace.hasFocus()) {
1451                mWorkspace.getChildAt(mWorkspace.getCurrentScreen()).requestFocus();
1452            }
1453
1454            final long[] userFolders = mSavedState.getLongArray(RUNTIME_STATE_USER_FOLDERS);
1455            if (userFolders != null) {
1456                for (long folderId : userFolders) {
1457                    final FolderInfo info = sModel.findFolderById(folderId);
1458                    if (info != null) {
1459                        openFolder(info);
1460                    }
1461                }
1462                final Folder openFolder = mWorkspace.getOpenFolder();
1463                if (openFolder != null) {
1464                    openFolder.requestFocus();
1465                }
1466            }
1467
1468            final boolean allApps = mSavedState.getBoolean(RUNTIME_STATE_ALL_APPS_FOLDER, false);
1469            if (allApps) {
1470                showAllAppsDialog();
1471            }
1472
1473            mSavedState = null;
1474        }
1475
1476        if (mSavedInstanceState != null) {
1477            super.onRestoreInstanceState(mSavedInstanceState);
1478            mSavedInstanceState = null;
1479        }
1480
1481        /* TODO
1482        if (mAllAppsDialog.isOpen && !mDrawer.hasFocus()) {
1483            mDrawer.requestFocus();
1484        }
1485        */
1486
1487        mDesktopLocked = false;
1488        mAllAppsDialog.unlock();
1489    }
1490
1491    private void bindDrawer(Launcher.DesktopBinder binder,
1492            ApplicationsAdapter drawerAdapter) {
1493        // TODO mAllAppsGrid.setAdapter(drawerAdapter);
1494        binder.startBindingAppWidgetsWhenIdle();
1495    }
1496
1497    private void bindAppWidgets(Launcher.DesktopBinder binder,
1498            LinkedList<LauncherAppWidgetInfo> appWidgets) {
1499
1500        final Workspace workspace = mWorkspace;
1501        final boolean desktopLocked = mDesktopLocked;
1502
1503        if (!appWidgets.isEmpty()) {
1504            final LauncherAppWidgetInfo item = appWidgets.removeFirst();
1505
1506            final int appWidgetId = item.appWidgetId;
1507            final AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
1508            item.hostView = mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
1509
1510            if (LOGD) d(LOG_TAG, String.format("about to setAppWidget for id=%d, info=%s", appWidgetId, appWidgetInfo));
1511
1512            item.hostView.setAppWidget(appWidgetId, appWidgetInfo);
1513            item.hostView.setTag(item);
1514
1515            workspace.addInScreen(item.hostView, item.screen, item.cellX,
1516                    item.cellY, item.spanX, item.spanY, !desktopLocked);
1517
1518            workspace.requestLayout();
1519        }
1520
1521        if (appWidgets.isEmpty()) {
1522            if (PROFILE_ROTATE) {
1523                android.os.Debug.stopMethodTracing();
1524            }
1525        } else {
1526            binder.obtainMessage(DesktopBinder.MESSAGE_BIND_APPWIDGETS).sendToTarget();
1527        }
1528    }
1529
1530    /**
1531     * Launches the intent referred by the clicked shortcut.
1532     *
1533     * @param v The view representing the clicked shortcut.
1534     */
1535    public void onClick(View v) {
1536        Object tag = v.getTag();
1537        if (tag instanceof ApplicationInfo) {
1538            // Open shortcut
1539            final Intent intent = ((ApplicationInfo) tag).intent;
1540            startActivitySafely(intent);
1541        } else if (tag instanceof FolderInfo) {
1542            handleFolderClick((FolderInfo) tag);
1543        } else if (v == mHandleView) {
1544            if (mAllAppsDialog.isOpen) {
1545                // TODO how can we be here?
1546            } else {
1547                showAllAppsDialog();
1548            }
1549        }
1550    }
1551
1552    void startActivitySafely(Intent intent) {
1553        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
1554        try {
1555            startActivity(intent);
1556        } catch (ActivityNotFoundException e) {
1557            Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
1558        } catch (SecurityException e) {
1559            Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
1560            e(LOG_TAG, "Launcher does not have the permission to launch " + intent +
1561                    ". Make sure to create a MAIN intent-filter for the corresponding activity " +
1562                    "or use the exported attribute for this activity.", e);
1563        }
1564    }
1565
1566    private void handleFolderClick(FolderInfo folderInfo) {
1567        if (!folderInfo.opened) {
1568            // Close any open folder
1569            closeFolder();
1570            // Open the requested folder
1571            openFolder(folderInfo);
1572        } else {
1573            // Find the open folder...
1574            Folder openFolder = mWorkspace.getFolderForTag(folderInfo);
1575            int folderScreen;
1576            if (openFolder != null) {
1577                folderScreen = mWorkspace.getScreenForView(openFolder);
1578                // .. and close it
1579                closeFolder(openFolder);
1580                if (folderScreen != mWorkspace.getCurrentScreen()) {
1581                    // Close any folder open on the current screen
1582                    closeFolder();
1583                    // Pull the folder onto this screen
1584                    openFolder(folderInfo);
1585                }
1586            }
1587        }
1588    }
1589
1590    /**
1591     * Opens the user fodler described by the specified tag. The opening of the folder
1592     * is animated relative to the specified View. If the View is null, no animation
1593     * is played.
1594     *
1595     * @param folderInfo The FolderInfo describing the folder to open.
1596     */
1597    private void openFolder(FolderInfo folderInfo) {
1598        Folder openFolder;
1599
1600        if (folderInfo instanceof UserFolderInfo) {
1601            openFolder = UserFolder.fromXml(this);
1602        } else if (folderInfo instanceof LiveFolderInfo) {
1603            openFolder = com.android.launcher2.LiveFolder.fromXml(this, folderInfo);
1604        } else {
1605            return;
1606        }
1607
1608        openFolder.setDragController(mDragController);
1609        openFolder.setLauncher(this);
1610
1611        openFolder.bind(folderInfo);
1612        folderInfo.opened = true;
1613
1614        mWorkspace.addInScreen(openFolder, folderInfo.screen, 0, 0, 4, 4);
1615        openFolder.onOpen();
1616    }
1617
1618    /**
1619     * Returns true if the workspace is being loaded. When the workspace is loading,
1620     * no user interaction should be allowed to avoid any conflict.
1621     *
1622     * @return True if the workspace is locked, false otherwise.
1623     */
1624    boolean isWorkspaceLocked() {
1625        return mDesktopLocked;
1626    }
1627
1628    public boolean onLongClick(View v) {
1629        if (mDesktopLocked) {
1630            return false;
1631        }
1632
1633        if (!(v instanceof CellLayout)) {
1634            v = (View) v.getParent();
1635        }
1636
1637        CellLayout.CellInfo cellInfo = (CellLayout.CellInfo) v.getTag();
1638
1639        // This happens when long clicking an item with the dpad/trackball
1640        if (cellInfo == null) {
1641            return true;
1642        }
1643
1644        if (mWorkspace.allowLongPress()) {
1645            if (cellInfo.cell == null) {
1646                if (cellInfo.valid) {
1647                    // User long pressed on empty space
1648                    mWorkspace.setAllowLongPress(false);
1649                    showAddDialog(cellInfo);
1650                }
1651            } else {
1652                if (!(cellInfo.cell instanceof Folder)) {
1653                    // User long pressed on an item
1654                    mWorkspace.startDrag(cellInfo);
1655                }
1656            }
1657        }
1658        return true;
1659    }
1660
1661    static LauncherModel getModel() {
1662        return sModel;
1663    }
1664
1665    View getDrawerHandle() {
1666        return mHandleView;
1667    }
1668
1669    boolean isDrawerDown() {
1670        return /* TODO !mDrawer.isMoving() && */ !mAllAppsDialog.isOpen;
1671    }
1672
1673    Workspace getWorkspace() {
1674        return mWorkspace;
1675    }
1676
1677    /* TODO
1678    GridView getApplicationsGrid() {
1679        return mAllAppsGrid;
1680    }
1681    */
1682
1683    @Override
1684    protected Dialog onCreateDialog(int id) {
1685        switch (id) {
1686            case DIALOG_ALL_APPS:
1687                return mAllAppsDialog;
1688            case DIALOG_CREATE_SHORTCUT:
1689                return new CreateShortcut().createDialog();
1690            case DIALOG_RENAME_FOLDER:
1691                return new RenameFolder().createDialog();
1692        }
1693
1694        return super.onCreateDialog(id);
1695    }
1696
1697    @Override
1698    protected void onPrepareDialog(int id, Dialog dialog) {
1699        switch (id) {
1700            case DIALOG_ALL_APPS:
1701                // TODO mAllAppsGrid.onPrepareDialog();
1702                break;
1703            case DIALOG_CREATE_SHORTCUT:
1704                break;
1705            case DIALOG_RENAME_FOLDER:
1706                if (mFolderInfo != null) {
1707                    EditText input = (EditText) dialog.findViewById(R.id.folder_name);
1708                    final CharSequence text = mFolderInfo.title;
1709                    input.setText(text);
1710                    input.setSelection(0, text.length());
1711                }
1712                break;
1713        }
1714    }
1715
1716    void showRenameDialog(FolderInfo info) {
1717        mFolderInfo = info;
1718        mWaitingForResult = true;
1719        showDialog(DIALOG_RENAME_FOLDER);
1720    }
1721
1722    private void showAddDialog(CellLayout.CellInfo cellInfo) {
1723        mAddItemCellInfo = cellInfo;
1724        mWaitingForResult = true;
1725        showDialog(DIALOG_CREATE_SHORTCUT);
1726    }
1727
1728    private void pickShortcut(int requestCode, int title) {
1729        Bundle bundle = new Bundle();
1730
1731        ArrayList<String> shortcutNames = new ArrayList<String>();
1732        shortcutNames.add(getString(R.string.group_applications));
1733        bundle.putStringArrayList(Intent.EXTRA_SHORTCUT_NAME, shortcutNames);
1734
1735        ArrayList<ShortcutIconResource> shortcutIcons = new ArrayList<ShortcutIconResource>();
1736        shortcutIcons.add(ShortcutIconResource.fromContext(Launcher.this,
1737                        R.drawable.ic_launcher_application));
1738        bundle.putParcelableArrayList(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, shortcutIcons);
1739
1740        Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1741        pickIntent.putExtra(Intent.EXTRA_INTENT, new Intent(Intent.ACTION_CREATE_SHORTCUT));
1742        pickIntent.putExtra(Intent.EXTRA_TITLE, getText(title));
1743        pickIntent.putExtras(bundle);
1744
1745        startActivityForResult(pickIntent, requestCode);
1746    }
1747
1748    private class RenameFolder {
1749        private EditText mInput;
1750
1751        Dialog createDialog() {
1752            mWaitingForResult = true;
1753            final View layout = View.inflate(Launcher.this, R.layout.rename_folder, null);
1754            mInput = (EditText) layout.findViewById(R.id.folder_name);
1755
1756            AlertDialog.Builder builder = new AlertDialog.Builder(Launcher.this);
1757            builder.setIcon(0);
1758            builder.setTitle(getString(R.string.rename_folder_title));
1759            builder.setCancelable(true);
1760            builder.setOnCancelListener(new Dialog.OnCancelListener() {
1761                public void onCancel(DialogInterface dialog) {
1762                    cleanup();
1763                }
1764            });
1765            builder.setNegativeButton(getString(R.string.cancel_action),
1766                new Dialog.OnClickListener() {
1767                    public void onClick(DialogInterface dialog, int which) {
1768                        cleanup();
1769                    }
1770                }
1771            );
1772            builder.setPositiveButton(getString(R.string.rename_action),
1773                new Dialog.OnClickListener() {
1774                    public void onClick(DialogInterface dialog, int which) {
1775                        changeFolderName();
1776                    }
1777                }
1778            );
1779            builder.setView(layout);
1780
1781            final AlertDialog dialog = builder.create();
1782            dialog.setOnShowListener(new DialogInterface.OnShowListener() {
1783                public void onShow(DialogInterface dialog) {
1784                    mWorkspace.lock();
1785                }
1786            });
1787
1788            return dialog;
1789        }
1790
1791        private void changeFolderName() {
1792            final String name = mInput.getText().toString();
1793            if (!TextUtils.isEmpty(name)) {
1794                // Make sure we have the right folder info
1795                mFolderInfo = sModel.findFolderById(mFolderInfo.id);
1796                mFolderInfo.title = name;
1797                LauncherModel.updateItemInDatabase(Launcher.this, mFolderInfo);
1798
1799                if (mDesktopLocked) {
1800                    mAllAppsDialog.lock();
1801                    sModel.loadUserItems(false, Launcher.this, false, false);
1802                } else {
1803                    final FolderIcon folderIcon = (FolderIcon)
1804                            mWorkspace.getViewForTag(mFolderInfo);
1805                    if (folderIcon != null) {
1806                        folderIcon.setText(name);
1807                        getWorkspace().requestLayout();
1808                    } else {
1809                        mDesktopLocked = true;
1810                        mAllAppsDialog.lock();
1811                        sModel.loadUserItems(false, Launcher.this, false, false);
1812                    }
1813                }
1814            }
1815            cleanup();
1816        }
1817
1818        private void cleanup() {
1819            mWorkspace.unlock();
1820            dismissDialog(DIALOG_RENAME_FOLDER);
1821            mWaitingForResult = false;
1822            mFolderInfo = null;
1823        }
1824    }
1825
1826    /**
1827     * Holds the 3d all apps view.
1828     */
1829    private class AllAppsDialog extends Dialog implements DialogInterface.OnCancelListener,
1830            DialogInterface.OnDismissListener, DialogInterface.OnShowListener {
1831
1832        boolean isOpen;
1833
1834        AllAppsDialog(Context context) {
1835            super(context, android.R.style.Theme_Translucent_NoTitleBar);
1836
1837            setOnCancelListener(this);
1838            setOnDismissListener(this);
1839            setOnShowListener(this);
1840
1841            setContentView(R.layout.all_apps);
1842            mAllAppsGrid = (AllAppsView) findViewById(R.id.all_apps);
1843
1844            DragLayer dragLayer = (DragLayer)findViewById(R.id.drag_layer);
1845            dragLayer.setDragController(mDragController);
1846
1847            // TODO grid.setDragController(mDragController);
1848            // TODO grid.setLauncher(Launcher.this);
1849        }
1850
1851        public void onCancel(DialogInterface dialog) {
1852            onDestroy();
1853        }
1854
1855        public void onDismiss(DialogInterface dialog) {
1856            onDestroy();
1857        }
1858
1859        public void onShow(DialogInterface dialog) {
1860        }
1861
1862        private void onDestroy() {
1863        }
1864
1865        void lock() {
1866            // TODO
1867        }
1868
1869        void unlock() {
1870            // TODO
1871        }
1872
1873        @Override
1874        public boolean onKeyDown(int keyCode, KeyEvent event) {
1875            switch (keyCode) {
1876                case KeyEvent.KEYCODE_BACK:
1877                    closeAllAppsDialog(true);
1878                    return true;
1879                default:
1880                    return super.onKeyDown(keyCode, event);
1881            }
1882        }
1883    }
1884
1885    void showAllAppsDialog() {
1886        mAllAppsDialog.isOpen = true;
1887        showDialog(DIALOG_ALL_APPS);
1888        mWorkspace.hide();
1889    }
1890
1891    void showWorkspace() {
1892        mWorkspace.show();
1893    }
1894
1895    void closeAllAppsDialog(boolean animated) {
1896        if (mAllAppsDialog.isOpen) {
1897            if (animated) {
1898                // TODO mDrawer.animateClose();
1899                mAllAppsDialog.dismiss();
1900            } else {
1901                mAllAppsDialog.dismiss();
1902            }
1903            mAllAppsDialog.isOpen = false;
1904            mWorkspace.getChildAt(mWorkspace.getCurrentScreen()).requestFocus();
1905            mWorkspace.show();
1906        }
1907    }
1908
1909    /**
1910     * Displays the shortcut creation dialog and launches, if necessary, the
1911     * appropriate activity.
1912     */
1913    private class CreateShortcut implements DialogInterface.OnClickListener,
1914            DialogInterface.OnCancelListener, DialogInterface.OnDismissListener,
1915            DialogInterface.OnShowListener {
1916
1917        private AddAdapter mAdapter;
1918
1919        Dialog createDialog() {
1920            mWaitingForResult = true;
1921
1922            mAdapter = new AddAdapter(Launcher.this);
1923
1924            final AlertDialog.Builder builder = new AlertDialog.Builder(Launcher.this);
1925            builder.setTitle(getString(R.string.menu_item_add_item));
1926            builder.setAdapter(mAdapter, this);
1927
1928            builder.setInverseBackgroundForced(true);
1929
1930            AlertDialog dialog = builder.create();
1931            dialog.setOnCancelListener(this);
1932            dialog.setOnDismissListener(this);
1933            dialog.setOnShowListener(this);
1934
1935            return dialog;
1936        }
1937
1938        public void onCancel(DialogInterface dialog) {
1939            mWaitingForResult = false;
1940            cleanup();
1941        }
1942
1943        public void onDismiss(DialogInterface dialog) {
1944            mWorkspace.unlock();
1945        }
1946
1947        private void cleanup() {
1948            mWorkspace.unlock();
1949            dismissDialog(DIALOG_CREATE_SHORTCUT);
1950        }
1951
1952        /**
1953         * Handle the action clicked in the "Add to home" dialog.
1954         */
1955        public void onClick(DialogInterface dialog, int which) {
1956            Resources res = getResources();
1957            cleanup();
1958
1959            switch (which) {
1960                case AddAdapter.ITEM_SHORTCUT: {
1961                    // Insert extra item to handle picking application
1962                    pickShortcut(REQUEST_PICK_SHORTCUT, R.string.title_select_shortcut);
1963                    break;
1964                }
1965
1966                case AddAdapter.ITEM_APPWIDGET: {
1967                    int appWidgetId = Launcher.this.mAppWidgetHost.allocateAppWidgetId();
1968
1969                    Intent pickIntent = new Intent(AppWidgetManager.ACTION_APPWIDGET_PICK);
1970                    pickIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
1971                    // add the search widget
1972                    ArrayList<AppWidgetProviderInfo> customInfo =
1973                            new ArrayList<AppWidgetProviderInfo>();
1974                    AppWidgetProviderInfo info = new AppWidgetProviderInfo();
1975                    info.provider = new ComponentName(getPackageName(), "XXX.YYY");
1976                    info.label = getString(R.string.group_search);
1977                    info.icon = R.drawable.ic_search_widget;
1978                    customInfo.add(info);
1979                    pickIntent.putParcelableArrayListExtra(
1980                            AppWidgetManager.EXTRA_CUSTOM_INFO, customInfo);
1981                    ArrayList<Bundle> customExtras = new ArrayList<Bundle>();
1982                    Bundle b = new Bundle();
1983                    b.putString(EXTRA_CUSTOM_WIDGET, SEARCH_WIDGET);
1984                    customExtras.add(b);
1985                    pickIntent.putParcelableArrayListExtra(
1986                            AppWidgetManager.EXTRA_CUSTOM_EXTRAS, customExtras);
1987                    // start the pick activity
1988                    startActivityForResult(pickIntent, REQUEST_PICK_APPWIDGET);
1989                    break;
1990                }
1991
1992                case AddAdapter.ITEM_LIVE_FOLDER: {
1993                    // Insert extra item to handle inserting folder
1994                    Bundle bundle = new Bundle();
1995
1996                    ArrayList<String> shortcutNames = new ArrayList<String>();
1997                    shortcutNames.add(res.getString(R.string.group_folder));
1998                    bundle.putStringArrayList(Intent.EXTRA_SHORTCUT_NAME, shortcutNames);
1999
2000                    ArrayList<ShortcutIconResource> shortcutIcons =
2001                            new ArrayList<ShortcutIconResource>();
2002                    shortcutIcons.add(ShortcutIconResource.fromContext(Launcher.this,
2003                            R.drawable.ic_launcher_folder));
2004                    bundle.putParcelableArrayList(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, shortcutIcons);
2005
2006                    Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
2007                    pickIntent.putExtra(Intent.EXTRA_INTENT,
2008                            new Intent(LiveFolders.ACTION_CREATE_LIVE_FOLDER));
2009                    pickIntent.putExtra(Intent.EXTRA_TITLE,
2010                            getText(R.string.title_select_live_folder));
2011                    pickIntent.putExtras(bundle);
2012
2013                    startActivityForResult(pickIntent, REQUEST_PICK_LIVE_FOLDER);
2014                    break;
2015                }
2016
2017                case AddAdapter.ITEM_WALLPAPER: {
2018                    startWallpaper();
2019                    break;
2020                }
2021            }
2022        }
2023
2024        public void onShow(DialogInterface dialog) {
2025            mWorkspace.lock();
2026        }
2027    }
2028
2029    /**
2030     * Receives notifications when applications are added/removed.
2031     */
2032    private class ApplicationsIntentReceiver extends BroadcastReceiver {
2033        @Override
2034        public void onReceive(Context context, Intent intent) {
2035            final String action = intent.getAction();
2036            final String packageName = intent.getData().getSchemeSpecificPart();
2037            final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
2038
2039            if (LauncherModel.DEBUG_LOADERS) {
2040                d(LauncherModel.LOG_TAG, "application intent received: " + action +
2041                        ", replacing=" + replacing);
2042                d(LauncherModel.LOG_TAG, "  --> " + intent.getData());
2043            }
2044
2045            if (!Intent.ACTION_PACKAGE_CHANGED.equals(action)) {
2046                if (Intent.ACTION_PACKAGE_REMOVED.equals(action)) {
2047                    if (!replacing) {
2048                        removeShortcutsForPackage(packageName);
2049                        if (LauncherModel.DEBUG_LOADERS) {
2050                            d(LauncherModel.LOG_TAG, "  --> remove package");
2051                        }
2052                        sModel.removePackage(Launcher.this, packageName);
2053                    }
2054                    // else, we are replacing the package, so a PACKAGE_ADDED will be sent
2055                    // later, we will update the package at this time
2056                } else {
2057                    if (!replacing) {
2058                        if (LauncherModel.DEBUG_LOADERS) {
2059                            d(LauncherModel.LOG_TAG, "  --> add package");
2060                        }
2061                        sModel.addPackage(Launcher.this, packageName);
2062                    } else {
2063                        if (LauncherModel.DEBUG_LOADERS) {
2064                            d(LauncherModel.LOG_TAG, "  --> update package " + packageName);
2065                        }
2066                        sModel.updatePackage(Launcher.this, packageName);
2067                        updateShortcutsForPackage(packageName);
2068                    }
2069                }
2070                removeDialog(DIALOG_CREATE_SHORTCUT);
2071            } else {
2072                if (LauncherModel.DEBUG_LOADERS) {
2073                    d(LauncherModel.LOG_TAG, "  --> sync package " + packageName);
2074                }
2075                sModel.syncPackage(Launcher.this, packageName);
2076            }
2077        }
2078    }
2079
2080    /**
2081     * Receives notifications whenever the user favorites have changed.
2082     */
2083    private class FavoritesChangeObserver extends ContentObserver {
2084        public FavoritesChangeObserver() {
2085            super(new Handler());
2086        }
2087
2088        @Override
2089        public void onChange(boolean selfChange) {
2090            onFavoritesChanged();
2091        }
2092    }
2093
2094    private static class DesktopBinder extends Handler implements MessageQueue.IdleHandler {
2095        static final int MESSAGE_BIND_ITEMS = 0x1;
2096        static final int MESSAGE_BIND_APPWIDGETS = 0x2;
2097        static final int MESSAGE_BIND_DRAWER = 0x3;
2098
2099        // Number of items to bind in every pass
2100        static final int ITEMS_COUNT = 6;
2101
2102        private final ArrayList<ItemInfo> mShortcuts;
2103        private final LinkedList<LauncherAppWidgetInfo> mAppWidgets;
2104        private final ApplicationsAdapter mDrawerAdapter;
2105        private final WeakReference<Launcher> mLauncher;
2106
2107        public boolean mTerminate = false;
2108
2109        DesktopBinder(Launcher launcher, ArrayList<ItemInfo> shortcuts,
2110                ArrayList<LauncherAppWidgetInfo> appWidgets,
2111                ApplicationsAdapter drawerAdapter) {
2112
2113            mLauncher = new WeakReference<Launcher>(launcher);
2114            mShortcuts = shortcuts;
2115            mDrawerAdapter = drawerAdapter;
2116
2117            // Sort widgets so active workspace is bound first
2118            final int currentScreen = launcher.mWorkspace.getCurrentScreen();
2119            final int size = appWidgets.size();
2120            mAppWidgets = new LinkedList<LauncherAppWidgetInfo>();
2121
2122            for (int i = 0; i < size; i++) {
2123                LauncherAppWidgetInfo appWidgetInfo = appWidgets.get(i);
2124                if (appWidgetInfo.screen == currentScreen) {
2125                    mAppWidgets.addFirst(appWidgetInfo);
2126                } else {
2127                    mAppWidgets.addLast(appWidgetInfo);
2128                }
2129            }
2130        }
2131
2132        public void startBindingItems() {
2133            obtainMessage(MESSAGE_BIND_ITEMS, 0, mShortcuts.size()).sendToTarget();
2134        }
2135
2136        public void startBindingDrawer() {
2137            obtainMessage(MESSAGE_BIND_DRAWER).sendToTarget();
2138        }
2139
2140        public void startBindingAppWidgetsWhenIdle() {
2141            // Ask for notification when message queue becomes idle
2142            final MessageQueue messageQueue = Looper.myQueue();
2143            messageQueue.addIdleHandler(this);
2144        }
2145
2146        public boolean queueIdle() {
2147            // Queue is idle, so start binding items
2148            startBindingAppWidgets();
2149            return false;
2150        }
2151
2152        public void startBindingAppWidgets() {
2153            obtainMessage(MESSAGE_BIND_APPWIDGETS).sendToTarget();
2154        }
2155
2156        @Override
2157        public void handleMessage(Message msg) {
2158            Launcher launcher = mLauncher.get();
2159            if (launcher == null || mTerminate) {
2160                return;
2161            }
2162
2163            switch (msg.what) {
2164                case MESSAGE_BIND_ITEMS: {
2165                    launcher.bindItems(this, mShortcuts, msg.arg1, msg.arg2);
2166                    break;
2167                }
2168                case MESSAGE_BIND_DRAWER: {
2169                    launcher.bindDrawer(this, mDrawerAdapter);
2170                    break;
2171                }
2172                case MESSAGE_BIND_APPWIDGETS: {
2173                    launcher.bindAppWidgets(this, mAppWidgets);
2174                    break;
2175                }
2176            }
2177        }
2178    }
2179}
2180