Launcher.java revision 1a304a1198f2f48be8c6a763b3ce511bd28af811 
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.WallpaperInfo;
26import android.app.WallpaperManager;
27import android.content.ActivityNotFoundException;
28import android.content.ComponentName;
29import android.content.ContentResolver;
30import android.content.Context;
31import android.content.DialogInterface;
32import android.content.Intent;
33import android.content.Intent.ShortcutIconResource;
34import android.content.pm.ActivityInfo;
35import android.content.pm.LabeledIntent;
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.Rect;
43import android.graphics.Matrix;
44import android.graphics.drawable.Drawable;
45import android.os.Bundle;
46import android.os.Handler;
47import android.os.Parcelable;
48import android.os.RemoteException;
49import android.os.ServiceManager;
50import android.os.SystemClock;
51import android.provider.LiveFolders;
52import android.text.Selection;
53import android.text.SpannableStringBuilder;
54import android.text.TextUtils;
55import android.text.method.TextKeyListener;
56import static android.util.Log.*;
57import 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.MotionEvent;
66import android.view.View.OnLongClickListener;
67import android.view.inputmethod.InputMethodManager;
68import android.widget.EditText;
69import android.widget.TextView;
70import android.widget.Toast;
71import android.widget.ImageView;
72import android.widget.PopupWindow;
73import android.appwidget.AppWidgetManager;
74import android.appwidget.AppWidgetProviderInfo;
75
76import java.util.ArrayList;
77import java.util.HashMap;
78import java.io.DataOutputStream;
79import java.io.FileNotFoundException;
80import java.io.IOException;
81import java.io.DataInputStream;
82
83/**
84 * Default launcher application.
85 */
86public final class Launcher extends Activity
87        implements View.OnClickListener, OnLongClickListener, LauncherModel.Callbacks, View.OnTouchListener, View.OnKeyListener {
88    static final String LOG_TAG = "Launcher";
89    static final String TAG = LOG_TAG;
90    static final boolean LOGD = false;
91
92    static final boolean PROFILE_STARTUP = false;
93    static final boolean PROFILE_ROTATE = false;
94    static final boolean DEBUG_USER_INTERFACE = false;
95
96    private static final int WALLPAPER_SCREENS_SPAN = 2;
97
98    private static final int MENU_GROUP_ADD = 1;
99    private static final int MENU_ADD = Menu.FIRST + 1;
100    private static final int MENU_WALLPAPER_SETTINGS = MENU_ADD + 1;
101    private static final int MENU_SEARCH = MENU_WALLPAPER_SETTINGS + 1;
102    private static final int MENU_NOTIFICATIONS = MENU_SEARCH + 1;
103    private static final int MENU_SETTINGS = MENU_NOTIFICATIONS + 1;
104
105    private static final int REQUEST_CREATE_SHORTCUT = 1;
106    private static final int REQUEST_CREATE_LIVE_FOLDER = 4;
107    private static final int REQUEST_CREATE_APPWIDGET = 5;
108    private static final int REQUEST_PICK_APPLICATION = 6;
109    private static final int REQUEST_PICK_SHORTCUT = 7;
110    private static final int REQUEST_PICK_LIVE_FOLDER = 8;
111    private static final int REQUEST_PICK_APPWIDGET = 9;
112    private static final int REQUEST_PICK_WALLPAPER = 10;
113
114    static final String EXTRA_SHORTCUT_DUPLICATE = "duplicate";
115
116    static final String EXTRA_CUSTOM_WIDGET = "custom_widget";
117    static final String SEARCH_WIDGET = "search_widget";
118
119    static final int SCREEN_COUNT = 5;
120    static final int DEFAULT_SCREEN = 2;
121    static final int NUMBER_CELLS_X = 4;
122    static final int NUMBER_CELLS_Y = 4;
123
124    static final int DIALOG_CREATE_SHORTCUT = 1;
125    static final int DIALOG_RENAME_FOLDER = 2;
126
127    private static final String PREFERENCES = "launcher.preferences";
128
129    // Type: int
130    private static final String RUNTIME_STATE_CURRENT_SCREEN = "launcher.current_screen";
131    // Type: boolean
132    private static final String RUNTIME_STATE_ALL_APPS_FOLDER = "launcher.all_apps_folder";
133    // Type: long
134    private static final String RUNTIME_STATE_USER_FOLDERS = "launcher.user_folder";
135    // Type: int
136    private static final String RUNTIME_STATE_PENDING_ADD_SCREEN = "launcher.add_screen";
137    // Type: int
138    private static final String RUNTIME_STATE_PENDING_ADD_CELL_X = "launcher.add_cellX";
139    // Type: int
140    private static final String RUNTIME_STATE_PENDING_ADD_CELL_Y = "launcher.add_cellY";
141    // Type: int
142    private static final String RUNTIME_STATE_PENDING_ADD_SPAN_X = "launcher.add_spanX";
143    // Type: int
144    private static final String RUNTIME_STATE_PENDING_ADD_SPAN_Y = "launcher.add_spanY";
145    // Type: int
146    private static final String RUNTIME_STATE_PENDING_ADD_COUNT_X = "launcher.add_countX";
147    // Type: int
148    private static final String RUNTIME_STATE_PENDING_ADD_COUNT_Y = "launcher.add_countY";
149    // Type: int[]
150    private static final String RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS = "launcher.add_occupied_cells";
151    // Type: boolean
152    private static final String RUNTIME_STATE_PENDING_FOLDER_RENAME = "launcher.rename_folder";
153    // Type: long
154    private static final String RUNTIME_STATE_PENDING_FOLDER_RENAME_ID = "launcher.rename_folder_id";
155
156    static final int APPWIDGET_HOST_ID = 1024;
157
158    private static final Object sLock = new Object();
159    private static int sScreen = DEFAULT_SCREEN;
160
161    private final ContentObserver mWidgetObserver = new AppWidgetResetObserver();
162
163    private LayoutInflater mInflater;
164
165    private DragController mDragController;
166    private Workspace mWorkspace;
167
168    private AppWidgetManager mAppWidgetManager;
169    private LauncherAppWidgetHost mAppWidgetHost;
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 DeleteZone mDeleteZone;
177    private HandleView mHandleView;
178    private AllAppsView mAllAppsGrid;
179
180    private Bundle mSavedState;
181
182    private SpannableStringBuilder mDefaultKeySsb = null;
183
184    private boolean mIsNewIntent;
185
186    private boolean mWorkspaceLoading = true;
187
188    private boolean mRestoring;
189    private boolean mWaitingForResult;
190    private boolean mExitingBecauseOfLaunch;
191
192    private Bundle mSavedInstanceState;
193
194    private LauncherModel mModel;
195
196    private ArrayList<ItemInfo> mDesktopItems = new ArrayList<ItemInfo>();
197    private static HashMap<Long, FolderInfo> mFolders = new HashMap<Long, FolderInfo>();
198
199    public static long lastStartTime;
200    private ImageView mPreviousView;
201    private ImageView mNextView;
202
203    @Override
204    protected void onCreate(Bundle savedInstanceState) {
205        lastStartTime = SystemClock.uptimeMillis();
206
207        super.onCreate(savedInstanceState);
208
209        mModel = ((LauncherApplication)getApplication()).setLauncher(this);
210        mDragController = new DragController(this);
211        mInflater = getLayoutInflater();
212
213        mAppWidgetManager = AppWidgetManager.getInstance(this);
214        mAppWidgetHost = new LauncherAppWidgetHost(this, APPWIDGET_HOST_ID);
215        mAppWidgetHost.startListening();
216
217        if (PROFILE_STARTUP) {
218            android.os.Debug.startMethodTracing("/sdcard/launcher");
219        }
220
221        checkForLocaleChange();
222        setWallpaperDimension();
223
224        setContentView(R.layout.launcher);
225        setupViews();
226
227        registerContentObservers();
228
229        lockAllApps();
230
231        mSavedState = savedInstanceState;
232        restoreState(mSavedState);
233
234        if (PROFILE_STARTUP) {
235            android.os.Debug.stopMethodTracing();
236        }
237
238        // We have a new AllAppsView, we need to re-bind everything, and it could have
239        // changed in our absence.
240        mModel.setAllAppsDirty();
241        mModel.setWorkspaceDirty();
242
243        if (!mRestoring) {
244            mModel.startLoader(this, true);
245        }
246
247        // For handling default keys
248        mDefaultKeySsb = new SpannableStringBuilder();
249        Selection.setSelection(mDefaultKeySsb, 0);
250    }
251
252    private void checkForLocaleChange() {
253        final LocaleConfiguration localeConfiguration = new LocaleConfiguration();
254        readConfiguration(this, localeConfiguration);
255
256        final Configuration configuration = getResources().getConfiguration();
257
258        final String previousLocale = localeConfiguration.locale;
259        final String locale = configuration.locale.toString();
260
261        final int previousMcc = localeConfiguration.mcc;
262        final int mcc = configuration.mcc;
263
264        final int previousMnc = localeConfiguration.mnc;
265        final int mnc = configuration.mnc;
266
267        boolean localeChanged = !locale.equals(previousLocale) || mcc != previousMcc || mnc != previousMnc;
268
269        if (localeChanged) {
270            localeConfiguration.locale = locale;
271            localeConfiguration.mcc = mcc;
272            localeConfiguration.mnc = mnc;
273
274            writeConfiguration(this, localeConfiguration);
275            AppInfoCache.flush();
276        }
277    }
278
279    private static class LocaleConfiguration {
280        public String locale;
281        public int mcc = -1;
282        public int mnc = -1;
283    }
284
285    private static void readConfiguration(Context context, LocaleConfiguration configuration) {
286        DataInputStream in = null;
287        try {
288            in = new DataInputStream(context.openFileInput(PREFERENCES));
289            configuration.locale = in.readUTF();
290            configuration.mcc = in.readInt();
291            configuration.mnc = in.readInt();
292        } catch (FileNotFoundException e) {
293            // Ignore
294        } catch (IOException e) {
295            // Ignore
296        } finally {
297            if (in != null) {
298                try {
299                    in.close();
300                } catch (IOException e) {
301                    // Ignore
302                }
303            }
304        }
305    }
306
307    private static void writeConfiguration(Context context, LocaleConfiguration configuration) {
308        DataOutputStream out = null;
309        try {
310            out = new DataOutputStream(context.openFileOutput(PREFERENCES, MODE_PRIVATE));
311            out.writeUTF(configuration.locale);
312            out.writeInt(configuration.mcc);
313            out.writeInt(configuration.mnc);
314            out.flush();
315        } catch (FileNotFoundException e) {
316            // Ignore
317        } catch (IOException e) {
318            //noinspection ResultOfMethodCallIgnored
319            context.getFileStreamPath(PREFERENCES).delete();
320        } finally {
321            if (out != null) {
322                try {
323                    out.close();
324                } catch (IOException e) {
325                    // Ignore
326                }
327            }
328        }
329    }
330
331    static int getScreen() {
332        synchronized (sLock) {
333            return sScreen;
334        }
335    }
336
337    static void setScreen(int screen) {
338        synchronized (sLock) {
339            sScreen = screen;
340        }
341    }
342
343    private void setWallpaperDimension() {
344        WallpaperManager wpm = (WallpaperManager)getSystemService(WALLPAPER_SERVICE);
345
346        Display display = getWindowManager().getDefaultDisplay();
347        boolean isPortrait = display.getWidth() < display.getHeight();
348
349        final int width = isPortrait ? display.getWidth() : display.getHeight();
350        final int height = isPortrait ? display.getHeight() : display.getWidth();
351        wpm.suggestDesiredDimensions(width * WALLPAPER_SCREENS_SPAN, height);
352    }
353
354    @Override
355    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
356        mWaitingForResult = false;
357
358        // The pattern used here is that a user PICKs a specific application,
359        // which, depending on the target, might need to CREATE the actual target.
360
361        // For example, the user would PICK_SHORTCUT for "Music playlist", and we
362        // launch over to the Music app to actually CREATE_SHORTCUT.
363
364        if (resultCode == RESULT_OK && mAddItemCellInfo != null) {
365            switch (requestCode) {
366                case REQUEST_PICK_APPLICATION:
367                    completeAddApplication(this, data, mAddItemCellInfo);
368                    break;
369                case REQUEST_PICK_SHORTCUT:
370                    processShortcut(data, REQUEST_PICK_APPLICATION, REQUEST_CREATE_SHORTCUT);
371                    break;
372                case REQUEST_CREATE_SHORTCUT:
373                    completeAddShortcut(data, mAddItemCellInfo);
374                    break;
375                case REQUEST_PICK_LIVE_FOLDER:
376                    addLiveFolder(data);
377                    break;
378                case REQUEST_CREATE_LIVE_FOLDER:
379                    completeAddLiveFolder(data, mAddItemCellInfo);
380                    break;
381                case REQUEST_PICK_APPWIDGET:
382                    addAppWidget(data);
383                    break;
384                case REQUEST_CREATE_APPWIDGET:
385                    completeAddAppWidget(data, mAddItemCellInfo);
386                    break;
387                case REQUEST_PICK_WALLPAPER:
388                    // We just wanted the activity result here so we can clear mWaitingForResult
389                    break;
390            }
391        } else if ((requestCode == REQUEST_PICK_APPWIDGET ||
392                requestCode == REQUEST_CREATE_APPWIDGET) && resultCode == RESULT_CANCELED &&
393                data != null) {
394            // Clean up the appWidgetId if we canceled
395            int appWidgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
396            if (appWidgetId != -1) {
397                mAppWidgetHost.deleteAppWidgetId(appWidgetId);
398            }
399        }
400    }
401
402    @Override
403    protected void onResume() {
404        if (lastStartTime == 0) {
405            lastStartTime = SystemClock.uptimeMillis();
406        }
407
408        super.onResume();
409
410        if (mRestoring) {
411            mWorkspaceLoading = true;
412            mModel.startLoader(this, true);
413            mRestoring = false;
414        }
415
416        // If this was a new intent (i.e., the mIsNewIntent flag got set to true by
417        // onNewIntent), then close the search dialog if needed, because it probably
418        // came from the user pressing 'home' (rather than, for example, pressing 'back').
419        if (mIsNewIntent) {
420            // Post to a handler so that this happens after the search dialog tries to open
421            // itself again.
422            mWorkspace.post(new Runnable() {
423                public void run() {
424                    ISearchManager searchManagerService = ISearchManager.Stub.asInterface(
425                            ServiceManager.getService(Context.SEARCH_SERVICE));
426                    try {
427                        searchManagerService.stopSearch();
428                    } catch (RemoteException e) {
429                        e(LOG_TAG, "error stopping search", e);
430                    }
431                }
432            });
433        }
434
435        mIsNewIntent = false;
436    }
437
438    @Override
439    protected void onPause() {
440        super.onPause();
441        if (mExitingBecauseOfLaunch) {
442            mExitingBecauseOfLaunch = false;
443            closeAllApps(false);
444        }
445        dismissPreview(mPreviousView);
446        dismissPreview(mNextView);
447    }
448
449    @Override
450    public Object onRetainNonConfigurationInstance() {
451        // Flag the loader to stop early before switching
452        mModel.stopLoader();
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 = mModel.getFolderById(this, mFolders, 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        DragController dragController = mDragController;
541
542        DragLayer dragLayer = (DragLayer) findViewById(R.id.drag_layer);
543        dragLayer.setDragController(dragController);
544
545        mAllAppsGrid = (AllAppsView)dragLayer.findViewById(R.id.all_apps_view);
546        mAllAppsGrid.setLauncher(this);
547        mAllAppsGrid.setDragController(dragController);
548        mAllAppsGrid.setWillNotDraw(false); // We don't want a hole punched in our window.
549        // Manage focusability manually since this thing is always visible
550        mAllAppsGrid.setFocusable(false);
551
552        mWorkspace = (Workspace) dragLayer.findViewById(R.id.workspace);
553        final Workspace workspace = mWorkspace;
554
555        DeleteZone deleteZone = (DeleteZone) dragLayer.findViewById(R.id.delete_zone);
556        mDeleteZone = deleteZone;
557
558        mHandleView = (HandleView) findViewById(R.id.all_apps_button);
559        mHandleView.setLauncher(this);
560        mHandleView.setOnClickListener(this);
561
562        mPreviousView = (ImageView) dragLayer.findViewById(R.id.previous_screen);
563        mNextView = (ImageView) dragLayer.findViewById(R.id.next_screen);
564
565        Drawable previous = mPreviousView.getDrawable();
566        Drawable next = mNextView.getDrawable();
567        mWorkspace.setIndicators(previous, next);
568
569        mPreviousView.setOnLongClickListener(this);
570        mPreviousView.setOnTouchListener(this);
571        mPreviousView.setOnKeyListener(this);
572        mNextView.setOnLongClickListener(this);
573        mNextView.setOnTouchListener(this);
574        mNextView.setOnKeyListener(this);
575
576        workspace.setOnLongClickListener(this);
577        workspace.setDragController(dragController);
578        workspace.setLauncher(this);
579
580        deleteZone.setLauncher(this);
581        deleteZone.setDragController(dragController);
582        deleteZone.setHandle(mHandleView);
583
584        dragController.setDragScoller(workspace);
585        dragController.setDragListener(deleteZone);
586        dragController.setScrollView(dragLayer);
587
588        // The order here is bottom to top.
589        dragController.addDropTarget(workspace);
590        dragController.addDropTarget(deleteZone);
591    }
592
593    @SuppressWarnings({"UnusedDeclaration"})
594    public void previousScreen(View v) {
595        mWorkspace.scrollLeft();
596    }
597
598    @SuppressWarnings({"UnusedDeclaration"})
599    public void nextScreen(View v) {
600        mWorkspace.scrollRight();
601    }
602
603    /**
604     * Creates a view representing a shortcut.
605     *
606     * @param info The data structure describing the shortcut.
607     *
608     * @return A View inflated from R.layout.application.
609     */
610    View createShortcut(ApplicationInfo info) {
611        return createShortcut(R.layout.application,
612                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), info);
613    }
614
615    /**
616     * Creates a view representing a shortcut inflated from the specified resource.
617     *
618     * @param layoutResId The id of the XML layout used to create the shortcut.
619     * @param parent The group the shortcut belongs to.
620     * @param info The data structure describing the shortcut.
621     *
622     * @return A View inflated from layoutResId.
623     */
624    View createShortcut(int layoutResId, ViewGroup parent, ApplicationInfo info) {
625        TextView favorite = (TextView) mInflater.inflate(layoutResId, parent, false);
626
627        if (info.icon == null) {
628            info.icon = AppInfoCache.getIconDrawable(getPackageManager(), info);
629        }
630        if (!info.filtered) {
631            info.icon = Utilities.createIconThumbnail(info.icon, this);
632            info.filtered = true;
633        }
634
635        favorite.setCompoundDrawablesWithIntrinsicBounds(null, info.icon, null, null);
636        favorite.setText(info.title);
637        favorite.setTag(info);
638        favorite.setOnClickListener(this);
639
640        return favorite;
641    }
642
643    /**
644     * Add an application shortcut to the workspace.
645     *
646     * @param data The intent describing the application.
647     * @param cellInfo The position on screen where to create the shortcut.
648     */
649    void completeAddApplication(Context context, Intent data, CellLayout.CellInfo cellInfo) {
650        cellInfo.screen = mWorkspace.getCurrentScreen();
651        if (!findSingleSlot(cellInfo)) return;
652
653        final ApplicationInfo info = infoFromApplicationIntent(context, data);
654        if (info != null) {
655            mWorkspace.addApplicationShortcut(info, cellInfo, isWorkspaceLocked());
656        }
657    }
658
659    private static ApplicationInfo infoFromApplicationIntent(Context context, Intent data) {
660        ComponentName component = data.getComponent();
661        PackageManager packageManager = context.getPackageManager();
662        ActivityInfo activityInfo = null;
663        try {
664            activityInfo = packageManager.getActivityInfo(component, 0 /* no flags */);
665        } catch (NameNotFoundException e) {
666            e(LOG_TAG, "Couldn't find ActivityInfo for selected application", e);
667        }
668
669        if (activityInfo != null) {
670            ApplicationInfo itemInfo = new ApplicationInfo();
671
672            itemInfo.title = activityInfo.loadLabel(packageManager);
673            if (itemInfo.title == null) {
674                itemInfo.title = activityInfo.name;
675            }
676
677            itemInfo.setActivity(component, Intent.FLAG_ACTIVITY_NEW_TASK |
678                    Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
679            itemInfo.icon = activityInfo.loadIcon(packageManager);
680            itemInfo.container = ItemInfo.NO_ID;
681
682            return itemInfo;
683        }
684
685        return null;
686    }
687
688    /**
689     * Add a shortcut to the workspace.
690     *
691     * @param data The intent describing the shortcut.
692     * @param cellInfo The position on screen where to create the shortcut.
693     */
694    private void completeAddShortcut(Intent data, CellLayout.CellInfo cellInfo) {
695        cellInfo.screen = mWorkspace.getCurrentScreen();
696        if (!findSingleSlot(cellInfo)) return;
697
698        final ApplicationInfo info = addShortcut(this, data, cellInfo, false);
699
700        if (!mRestoring) {
701            final View view = createShortcut(info);
702            mWorkspace.addInCurrentScreen(view, cellInfo.cellX, cellInfo.cellY, 1, 1,
703                    isWorkspaceLocked());
704        }
705    }
706
707
708    /**
709     * Add a widget to the workspace.
710     *
711     * @param data The intent describing the appWidgetId.
712     * @param cellInfo The position on screen where to create the widget.
713     */
714    private void completeAddAppWidget(Intent data, CellLayout.CellInfo cellInfo) {
715        Bundle extras = data.getExtras();
716        int appWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
717
718        if (LOGD) d(LOG_TAG, "dumping extras content=" + extras.toString());
719
720        AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
721
722        // Calculate the grid spans needed to fit this widget
723        CellLayout layout = (CellLayout) mWorkspace.getChildAt(cellInfo.screen);
724        int[] spans = layout.rectToCell(appWidgetInfo.minWidth, appWidgetInfo.minHeight);
725
726        // Try finding open space on Launcher screen
727        final int[] xy = mCellCoordinates;
728        if (!findSlot(cellInfo, xy, spans[0], spans[1])) {
729            if (appWidgetId != -1) mAppWidgetHost.deleteAppWidgetId(appWidgetId);
730            return;
731        }
732
733        // Build Launcher-specific widget info and save to database
734        LauncherAppWidgetInfo launcherInfo = new LauncherAppWidgetInfo(appWidgetId);
735        launcherInfo.spanX = spans[0];
736        launcherInfo.spanY = spans[1];
737
738        LauncherModel.addItemToDatabase(this, launcherInfo,
739                LauncherSettings.Favorites.CONTAINER_DESKTOP,
740                mWorkspace.getCurrentScreen(), xy[0], xy[1], false);
741
742        if (!mRestoring) {
743            mDesktopItems.add(launcherInfo);
744
745            // Perform actual inflation because we're live
746            launcherInfo.hostView = mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
747
748            launcherInfo.hostView.setAppWidget(appWidgetId, appWidgetInfo);
749            launcherInfo.hostView.setTag(launcherInfo);
750
751            mWorkspace.addInCurrentScreen(launcherInfo.hostView, xy[0], xy[1],
752                    launcherInfo.spanX, launcherInfo.spanY, isWorkspaceLocked());
753        }
754    }
755
756    public void removeAppWidget(LauncherAppWidgetInfo launcherInfo) {
757        mDesktopItems.remove(launcherInfo);
758        launcherInfo.hostView = null;
759    }
760
761    public LauncherAppWidgetHost getAppWidgetHost() {
762        return mAppWidgetHost;
763    }
764
765    static ApplicationInfo addShortcut(Context context, Intent data,
766            CellLayout.CellInfo cellInfo, boolean notify) {
767
768        final ApplicationInfo info = infoFromShortcutIntent(context, data);
769        LauncherModel.addItemToDatabase(context, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
770                cellInfo.screen, cellInfo.cellX, cellInfo.cellY, notify);
771
772        return info;
773    }
774
775    private static ApplicationInfo infoFromShortcutIntent(Context context, Intent data) {
776        Intent intent = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_INTENT);
777        String name = data.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
778        Bitmap bitmap = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_ICON);
779
780        Drawable icon = null;
781        boolean filtered = false;
782        boolean customIcon = false;
783        ShortcutIconResource iconResource = null;
784
785        if (bitmap != null) {
786            icon = new FastBitmapDrawable(Utilities.createBitmapThumbnail(bitmap, context));
787            filtered = true;
788            customIcon = true;
789        } else {
790            Parcelable extra = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE);
791            if (extra != null && extra instanceof ShortcutIconResource) {
792                try {
793                    iconResource = (ShortcutIconResource) extra;
794                    final PackageManager packageManager = context.getPackageManager();
795                    Resources resources = packageManager.getResourcesForApplication(
796                            iconResource.packageName);
797                    final int id = resources.getIdentifier(iconResource.resourceName, null, null);
798                    icon = resources.getDrawable(id);
799                } catch (Exception e) {
800                    w(LOG_TAG, "Could not load shortcut icon: " + extra);
801                }
802            }
803        }
804
805        if (icon == null) {
806            icon = context.getPackageManager().getDefaultActivityIcon();
807        }
808
809        final ApplicationInfo info = new ApplicationInfo();
810        info.icon = icon;
811        info.filtered = filtered;
812        info.title = name;
813        info.intent = intent;
814        info.customIcon = customIcon;
815        info.iconResource = iconResource;
816
817        return info;
818    }
819
820    @Override
821    protected void onNewIntent(Intent intent) {
822        super.onNewIntent(intent);
823
824        // Close the menu
825        if (Intent.ACTION_MAIN.equals(intent.getAction())) {
826            getWindow().closeAllPanels();
827
828            // Whatever we were doing is hereby canceled.
829            mWaitingForResult = false;
830
831            // Set this flag so that onResume knows to close the search dialog if it's open,
832            // because this was a new intent (thus a press of 'home' or some such) rather than
833            // for example onResume being called when the user pressed the 'back' button.
834            mIsNewIntent = true;
835
836            try {
837                dismissDialog(DIALOG_CREATE_SHORTCUT);
838                // Unlock the workspace if the dialog was showing
839            } catch (Exception e) {
840                // An exception is thrown if the dialog is not visible, which is fine
841            }
842
843            try {
844                dismissDialog(DIALOG_RENAME_FOLDER);
845                // Unlock the workspace if the dialog was showing
846            } catch (Exception e) {
847                // An exception is thrown if the dialog is not visible, which is fine
848            }
849
850            if ((intent.getFlags() & Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT) !=
851                    Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT) {
852
853                if (!mWorkspace.isDefaultScreenShowing()) {
854                    mWorkspace.moveToDefaultScreen();
855                }
856
857                closeAllApps(true);
858
859                final View v = getWindow().peekDecorView();
860                if (v != null && v.getWindowToken() != null) {
861                    InputMethodManager imm = (InputMethodManager)getSystemService(
862                            INPUT_METHOD_SERVICE);
863                    imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
864                }
865            } else {
866                closeAllApps(false);
867            }
868        }
869    }
870
871    @Override
872    protected void onRestoreInstanceState(Bundle savedInstanceState) {
873        // Do not call super here
874        mSavedInstanceState = savedInstanceState;
875    }
876
877    @Override
878    protected void onSaveInstanceState(Bundle outState) {
879        outState.putInt(RUNTIME_STATE_CURRENT_SCREEN, mWorkspace.getCurrentScreen());
880
881        final ArrayList<Folder> folders = mWorkspace.getOpenFolders();
882        if (folders.size() > 0) {
883            final int count = folders.size();
884            long[] ids = new long[count];
885            for (int i = 0; i < count; i++) {
886                final FolderInfo info = folders.get(i).getInfo();
887                ids[i] = info.id;
888            }
889            outState.putLongArray(RUNTIME_STATE_USER_FOLDERS, ids);
890        } else {
891            super.onSaveInstanceState(outState);
892        }
893
894        final boolean isConfigurationChange = getChangingConfigurations() != 0;
895
896        // When the drawer is opened and we are saving the state because of a
897        // configuration change
898        // TODO should not do this if the drawer is currently closing.
899        if (isAllAppsVisible() && isConfigurationChange) {
900            outState.putBoolean(RUNTIME_STATE_ALL_APPS_FOLDER, true);
901        }
902
903        if (mAddItemCellInfo != null && mAddItemCellInfo.valid && mWaitingForResult) {
904            final CellLayout.CellInfo addItemCellInfo = mAddItemCellInfo;
905            final CellLayout layout = (CellLayout) mWorkspace.getChildAt(addItemCellInfo.screen);
906
907            outState.putInt(RUNTIME_STATE_PENDING_ADD_SCREEN, addItemCellInfo.screen);
908            outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_X, addItemCellInfo.cellX);
909            outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_Y, addItemCellInfo.cellY);
910            outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_X, addItemCellInfo.spanX);
911            outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y, addItemCellInfo.spanY);
912            outState.putInt(RUNTIME_STATE_PENDING_ADD_COUNT_X, layout.getCountX());
913            outState.putInt(RUNTIME_STATE_PENDING_ADD_COUNT_Y, layout.getCountY());
914            outState.putBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS,
915                   layout.getOccupiedCells());
916        }
917
918        if (mFolderInfo != null && mWaitingForResult) {
919            outState.putBoolean(RUNTIME_STATE_PENDING_FOLDER_RENAME, true);
920            outState.putLong(RUNTIME_STATE_PENDING_FOLDER_RENAME_ID, mFolderInfo.id);
921        }
922    }
923
924    @Override
925    public void onDestroy() {
926        super.onDestroy();
927
928        try {
929            mAppWidgetHost.stopListening();
930        } catch (NullPointerException ex) {
931            w(LOG_TAG, "problem while stopping AppWidgetHost during Launcher destruction", ex);
932        }
933
934        TextKeyListener.getInstance().release();
935
936        mModel.stopLoader();
937
938        unbindDesktopItems();
939        AppInfoCache.unbindDrawables();
940
941        getContentResolver().unregisterContentObserver(mWidgetObserver);
942
943        dismissPreview(mPreviousView);
944        dismissPreview(mNextView);
945    }
946
947    @Override
948    public void startActivityForResult(Intent intent, int requestCode) {
949        if (requestCode >= 0) mWaitingForResult = true;
950        super.startActivityForResult(intent, requestCode);
951    }
952
953    @Override
954    public void startSearch(String initialQuery, boolean selectInitialQuery,
955            Bundle appSearchData, boolean globalSearch) {
956
957        closeAllApps(true);
958
959        // Slide the search widget to the top, if it's on the current screen,
960        // otherwise show the search dialog immediately.
961        Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
962        if (searchWidget == null) {
963            showSearchDialog(initialQuery, selectInitialQuery, appSearchData, globalSearch);
964        } else {
965            searchWidget.startSearch(initialQuery, selectInitialQuery, appSearchData, globalSearch);
966            // show the currently typed text in the search widget while sliding
967            searchWidget.setQuery(getTypedText());
968        }
969    }
970
971    /**
972     * Show the search dialog immediately, without changing the search widget.
973     *
974     * @see Activity#startSearch(String, boolean, android.os.Bundle, boolean)
975     */
976    void showSearchDialog(String initialQuery, boolean selectInitialQuery,
977            Bundle appSearchData, boolean globalSearch) {
978
979        if (initialQuery == null) {
980            // Use any text typed in the launcher as the initial query
981            initialQuery = getTypedText();
982            clearTypedText();
983        }
984        if (appSearchData == null) {
985            appSearchData = new Bundle();
986            appSearchData.putString(SearchManager.SOURCE, "launcher-search");
987        }
988
989        final SearchManager searchManager =
990                (SearchManager) getSystemService(Context.SEARCH_SERVICE);
991
992        final Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
993        if (searchWidget != null) {
994            // This gets called when the user leaves the search dialog to go back to
995            // the Launcher.
996            searchManager.setOnCancelListener(new SearchManager.OnCancelListener() {
997                public void onCancel() {
998                    searchManager.setOnCancelListener(null);
999                    stopSearch();
1000                }
1001            });
1002        }
1003
1004        searchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(),
1005            appSearchData, globalSearch);
1006    }
1007
1008    /**
1009     * Cancel search dialog if it is open.
1010     */
1011    void stopSearch() {
1012        // Close search dialog
1013        SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
1014        searchManager.stopSearch();
1015        // Restore search widget to its normal position
1016        Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
1017        if (searchWidget != null) {
1018            searchWidget.stopSearch(false);
1019        }
1020    }
1021
1022    @Override
1023    public boolean onCreateOptionsMenu(Menu menu) {
1024        if (isWorkspaceLocked()) {
1025            return false;
1026        }
1027
1028        super.onCreateOptionsMenu(menu);
1029        menu.add(MENU_GROUP_ADD, MENU_ADD, 0, R.string.menu_add)
1030                .setIcon(android.R.drawable.ic_menu_add)
1031                .setAlphabeticShortcut('A');
1032        menu.add(0, MENU_WALLPAPER_SETTINGS, 0, R.string.menu_wallpaper)
1033                 .setIcon(android.R.drawable.ic_menu_gallery)
1034                 .setAlphabeticShortcut('W');
1035        menu.add(0, MENU_SEARCH, 0, R.string.menu_search)
1036                .setIcon(android.R.drawable.ic_search_category_default)
1037                .setAlphabeticShortcut(SearchManager.MENU_KEY);
1038        menu.add(0, MENU_NOTIFICATIONS, 0, R.string.menu_notifications)
1039                .setIcon(com.android.internal.R.drawable.ic_menu_notifications)
1040                .setAlphabeticShortcut('N');
1041
1042        final Intent settings = new Intent(android.provider.Settings.ACTION_SETTINGS);
1043        settings.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
1044                Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
1045
1046        menu.add(0, MENU_SETTINGS, 0, R.string.menu_settings)
1047                .setIcon(android.R.drawable.ic_menu_preferences).setAlphabeticShortcut('P')
1048                .setIntent(settings);
1049
1050        return true;
1051    }
1052
1053    @Override
1054    public boolean onPrepareOptionsMenu(Menu menu) {
1055        super.onPrepareOptionsMenu(menu);
1056
1057        mMenuAddInfo = mWorkspace.findAllVacantCells(null);
1058        menu.setGroupEnabled(MENU_GROUP_ADD, mMenuAddInfo != null && mMenuAddInfo.valid);
1059
1060        return true;
1061    }
1062
1063    @Override
1064    public boolean onOptionsItemSelected(MenuItem item) {
1065        switch (item.getItemId()) {
1066            case MENU_ADD:
1067                addItems();
1068                return true;
1069            case MENU_WALLPAPER_SETTINGS:
1070                startWallpaper();
1071                return true;
1072            case MENU_SEARCH:
1073                onSearchRequested();
1074                return true;
1075            case MENU_NOTIFICATIONS:
1076                showNotifications();
1077                return true;
1078        }
1079
1080        return super.onOptionsItemSelected(item);
1081    }
1082
1083    /**
1084     * Indicates that we want global search for this activity by setting the globalSearch
1085     * argument for {@link #startSearch} to true.
1086     */
1087
1088    @Override
1089    public boolean onSearchRequested() {
1090        startSearch(null, false, null, true);
1091        return true;
1092    }
1093
1094    public boolean isWorkspaceLocked() {
1095        return mWorkspaceLoading || mWaitingForResult;
1096    }
1097
1098    private void addItems() {
1099        closeAllApps(true);
1100        showAddDialog(mMenuAddInfo);
1101    }
1102
1103    void addAppWidget(Intent data) {
1104        // TODO: catch bad widget exception when sent
1105        int appWidgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
1106
1107        String customWidget = data.getStringExtra(EXTRA_CUSTOM_WIDGET);
1108        if (SEARCH_WIDGET.equals(customWidget)) {
1109            // We don't need this any more, since this isn't a real app widget.
1110            mAppWidgetHost.deleteAppWidgetId(appWidgetId);
1111            // add the search widget
1112            addSearch();
1113        } else {
1114            AppWidgetProviderInfo appWidget = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
1115
1116            if (appWidget.configure != null) {
1117                // Launch over to configure widget, if needed
1118                Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_CONFIGURE);
1119                intent.setComponent(appWidget.configure);
1120                intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
1121
1122                startActivityForResult(intent, REQUEST_CREATE_APPWIDGET);
1123            } else {
1124                // Otherwise just add it
1125                onActivityResult(REQUEST_CREATE_APPWIDGET, Activity.RESULT_OK, data);
1126            }
1127        }
1128    }
1129
1130    void addSearch() {
1131        final Widget info = Widget.makeSearch();
1132        final CellLayout.CellInfo cellInfo = mAddItemCellInfo;
1133
1134        final int[] xy = mCellCoordinates;
1135        final int spanX = info.spanX;
1136        final int spanY = info.spanY;
1137
1138        if (!findSlot(cellInfo, xy, spanX, spanY)) return;
1139
1140        LauncherModel.addItemToDatabase(this, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
1141        mWorkspace.getCurrentScreen(), xy[0], xy[1], false);
1142
1143        final View view = mInflater.inflate(info.layoutResource, null);
1144        view.setTag(info);
1145        Search search = (Search) view.findViewById(R.id.widget_search);
1146        search.setLauncher(this);
1147
1148        mWorkspace.addInCurrentScreen(view, xy[0], xy[1], info.spanX, spanY);
1149    }
1150
1151    void processShortcut(Intent intent, int requestCodeApplication, int requestCodeShortcut) {
1152        // Handle case where user selected "Applications"
1153        String applicationName = getResources().getString(R.string.group_applications);
1154        String shortcutName = intent.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
1155
1156        if (applicationName != null && applicationName.equals(shortcutName)) {
1157            Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
1158            mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
1159
1160            Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1161            pickIntent.putExtra(Intent.EXTRA_INTENT, mainIntent);
1162            startActivityForResult(pickIntent, requestCodeApplication);
1163        } else {
1164            startActivityForResult(intent, requestCodeShortcut);
1165        }
1166    }
1167
1168    void addLiveFolder(Intent intent) {
1169        // Handle case where user selected "Folder"
1170        String folderName = getResources().getString(R.string.group_folder);
1171        String shortcutName = intent.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
1172
1173        if (folderName != null && folderName.equals(shortcutName)) {
1174            addFolder();
1175        } else {
1176            startActivityForResult(intent, REQUEST_CREATE_LIVE_FOLDER);
1177        }
1178    }
1179
1180    void addFolder() {
1181        UserFolderInfo folderInfo = new UserFolderInfo();
1182        folderInfo.title = getText(R.string.folder_name);
1183
1184        CellLayout.CellInfo cellInfo = mAddItemCellInfo;
1185        cellInfo.screen = mWorkspace.getCurrentScreen();
1186        if (!findSingleSlot(cellInfo)) return;
1187
1188        // Update the model
1189        LauncherModel.addItemToDatabase(this, folderInfo,
1190                LauncherSettings.Favorites.CONTAINER_DESKTOP,
1191                mWorkspace.getCurrentScreen(), cellInfo.cellX, cellInfo.cellY, false);
1192        mFolders.put(folderInfo.id, folderInfo);
1193
1194        // Create the view
1195        FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon, this,
1196                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), folderInfo);
1197        mWorkspace.addInCurrentScreen(newFolder,
1198                cellInfo.cellX, cellInfo.cellY, 1, 1, isWorkspaceLocked());
1199    }
1200
1201    void removeFolder(FolderInfo folder) {
1202        mFolders.remove(folder.id);
1203    }
1204
1205    private void completeAddLiveFolder(Intent data, CellLayout.CellInfo cellInfo) {
1206        cellInfo.screen = mWorkspace.getCurrentScreen();
1207        if (!findSingleSlot(cellInfo)) return;
1208
1209        final LiveFolderInfo info = addLiveFolder(this, data, cellInfo, false);
1210
1211        if (!mRestoring) {
1212            final View view = LiveFolderIcon.fromXml(R.layout.live_folder_icon, this,
1213                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), info);
1214            mWorkspace.addInCurrentScreen(view, cellInfo.cellX, cellInfo.cellY, 1, 1,
1215                    isWorkspaceLocked());
1216        }
1217    }
1218
1219    static LiveFolderInfo addLiveFolder(Context context, Intent data,
1220            CellLayout.CellInfo cellInfo, boolean notify) {
1221
1222        Intent baseIntent = data.getParcelableExtra(LiveFolders.EXTRA_LIVE_FOLDER_BASE_INTENT);
1223        String name = data.getStringExtra(LiveFolders.EXTRA_LIVE_FOLDER_NAME);
1224
1225        Drawable icon = null;
1226        boolean filtered = false;
1227        Intent.ShortcutIconResource iconResource = null;
1228
1229        Parcelable extra = data.getParcelableExtra(LiveFolders.EXTRA_LIVE_FOLDER_ICON);
1230        if (extra != null && extra instanceof Intent.ShortcutIconResource) {
1231            try {
1232                iconResource = (Intent.ShortcutIconResource) extra;
1233                final PackageManager packageManager = context.getPackageManager();
1234                Resources resources = packageManager.getResourcesForApplication(
1235                        iconResource.packageName);
1236                final int id = resources.getIdentifier(iconResource.resourceName, null, null);
1237                icon = resources.getDrawable(id);
1238            } catch (Exception e) {
1239                w(LOG_TAG, "Could not load live folder icon: " + extra);
1240            }
1241        }
1242
1243        if (icon == null) {
1244            icon = context.getResources().getDrawable(R.drawable.ic_launcher_folder);
1245        }
1246
1247        final LiveFolderInfo info = new LiveFolderInfo();
1248        info.icon = icon;
1249        info.filtered = filtered;
1250        info.title = name;
1251        info.iconResource = iconResource;
1252        info.uri = data.getData();
1253        info.baseIntent = baseIntent;
1254        info.displayMode = data.getIntExtra(LiveFolders.EXTRA_LIVE_FOLDER_DISPLAY_MODE,
1255                LiveFolders.DISPLAY_MODE_GRID);
1256
1257        LauncherModel.addItemToDatabase(context, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
1258                cellInfo.screen, cellInfo.cellX, cellInfo.cellY, notify);
1259        mFolders.put(info.id, info);
1260
1261        return info;
1262    }
1263
1264    private boolean findSingleSlot(CellLayout.CellInfo cellInfo) {
1265        final int[] xy = new int[2];
1266        if (findSlot(cellInfo, xy, 1, 1)) {
1267            cellInfo.cellX = xy[0];
1268            cellInfo.cellY = xy[1];
1269            return true;
1270        }
1271        return false;
1272    }
1273
1274    private boolean findSlot(CellLayout.CellInfo cellInfo, int[] xy, int spanX, int spanY) {
1275        if (!cellInfo.findCellForSpan(xy, spanX, spanY)) {
1276            boolean[] occupied = mSavedState != null ?
1277                    mSavedState.getBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS) : null;
1278            cellInfo = mWorkspace.findAllVacantCells(occupied);
1279            if (!cellInfo.findCellForSpan(xy, spanX, spanY)) {
1280                Toast.makeText(this, getString(R.string.out_of_space), Toast.LENGTH_SHORT).show();
1281                return false;
1282            }
1283        }
1284        return true;
1285    }
1286
1287    private void showNotifications() {
1288        final StatusBarManager statusBar = (StatusBarManager) getSystemService(STATUS_BAR_SERVICE);
1289        if (statusBar != null) {
1290            statusBar.expand();
1291        }
1292    }
1293
1294    private void startWallpaper() {
1295        closeAllApps(true);
1296        final Intent pickWallpaper = new Intent(Intent.ACTION_SET_WALLPAPER);
1297        Intent chooser = Intent.createChooser(pickWallpaper,
1298                getText(R.string.chooser_wallpaper));
1299        WallpaperManager wm = (WallpaperManager)
1300                getSystemService(Context.WALLPAPER_SERVICE);
1301        WallpaperInfo wi = wm.getWallpaperInfo();
1302        if (wi != null && wi.getSettingsActivity() != null) {
1303            LabeledIntent li = new LabeledIntent(getPackageName(),
1304                    R.string.configure_wallpaper, 0);
1305            li.setClassName(wi.getPackageName(), wi.getSettingsActivity());
1306            chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Intent[] { li });
1307        }
1308        startActivityForResult(chooser, REQUEST_PICK_WALLPAPER);
1309    }
1310
1311    private void registerContentObservers() {
1312        ContentResolver resolver = getContentResolver();
1313        resolver.registerContentObserver(LauncherProvider.CONTENT_APPWIDGET_RESET_URI,
1314                true, mWidgetObserver);
1315    }
1316
1317    @Override
1318    public boolean dispatchKeyEvent(KeyEvent event) {
1319        if (event.getAction() == KeyEvent.ACTION_DOWN) {
1320            switch (event.getKeyCode()) {
1321                case KeyEvent.KEYCODE_BACK:
1322                    return true;
1323                case KeyEvent.KEYCODE_HOME:
1324                    return true;
1325            }
1326        } else if (event.getAction() == KeyEvent.ACTION_UP) {
1327            switch (event.getKeyCode()) {
1328                case KeyEvent.KEYCODE_BACK:
1329                    if (!event.isCanceled()) {
1330                        mWorkspace.dispatchKeyEvent(event);
1331                        if (isAllAppsVisible()) {
1332                            closeAllApps(true);
1333                        } else {
1334                            closeFolder();
1335                        }
1336                    }
1337                    return true;
1338                case KeyEvent.KEYCODE_HOME:
1339                    return true;
1340            }
1341        }
1342
1343        return super.dispatchKeyEvent(event);
1344    }
1345
1346    private void closeFolder() {
1347        Folder folder = mWorkspace.getOpenFolder();
1348        if (folder != null) {
1349            closeFolder(folder);
1350        }
1351    }
1352
1353    void closeFolder(Folder folder) {
1354        folder.getInfo().opened = false;
1355        ViewGroup parent = (ViewGroup) folder.getParent();
1356        if (parent != null) {
1357            parent.removeView(folder);
1358            if (folder instanceof DropTarget) {
1359                // Live folders aren't DropTargets.
1360                mDragController.removeDropTarget((DropTarget)folder);
1361            }
1362        }
1363        folder.onClose();
1364    }
1365
1366    /**
1367     * Re-listen when widgets are reset.
1368     */
1369    private void onAppWidgetReset() {
1370        mAppWidgetHost.startListening();
1371    }
1372
1373    /**
1374     * Go through the and disconnect any of the callbacks in the drawables and the views or we
1375     * leak the previous Home screen on orientation change.
1376     */
1377    private void unbindDesktopItems() {
1378        for (ItemInfo item: mDesktopItems) {
1379            item.unbind();
1380        }
1381    }
1382
1383    /**
1384     * Launches the intent referred by the clicked shortcut.
1385     *
1386     * @param v The view representing the clicked shortcut.
1387     */
1388    public void onClick(View v) {
1389        Object tag = v.getTag();
1390        if (tag instanceof ApplicationInfo) {
1391            // Open shortcut
1392            final Intent intent = ((ApplicationInfo) tag).intent;
1393            startActivitySafely(intent);
1394            mExitingBecauseOfLaunch = true;
1395        } else if (tag instanceof FolderInfo) {
1396            handleFolderClick((FolderInfo) tag);
1397        } else if (v == mHandleView) {
1398            Log.d(TAG, "onClick");
1399            if (isAllAppsVisible()) {
1400                closeAllApps(true);
1401            } else {
1402                showAllApps();
1403            }
1404        }
1405    }
1406
1407    void startActivitySafely(Intent intent) {
1408        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
1409        try {
1410            startActivity(intent);
1411        } catch (ActivityNotFoundException e) {
1412            Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
1413        } catch (SecurityException e) {
1414            Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
1415            e(LOG_TAG, "Launcher does not have the permission to launch " + intent +
1416                    ". Make sure to create a MAIN intent-filter for the corresponding activity " +
1417                    "or use the exported attribute for this activity.", e);
1418        }
1419    }
1420
1421    private void handleFolderClick(FolderInfo folderInfo) {
1422        if (!folderInfo.opened) {
1423            // Close any open folder
1424            closeFolder();
1425            // Open the requested folder
1426            openFolder(folderInfo);
1427        } else {
1428            // Find the open folder...
1429            Folder openFolder = mWorkspace.getFolderForTag(folderInfo);
1430            int folderScreen;
1431            if (openFolder != null) {
1432                folderScreen = mWorkspace.getScreenForView(openFolder);
1433                // .. and close it
1434                closeFolder(openFolder);
1435                if (folderScreen != mWorkspace.getCurrentScreen()) {
1436                    // Close any folder open on the current screen
1437                    closeFolder();
1438                    // Pull the folder onto this screen
1439                    openFolder(folderInfo);
1440                }
1441            }
1442        }
1443    }
1444
1445    /**
1446     * Opens the user fodler described by the specified tag. The opening of the folder
1447     * is animated relative to the specified View. If the View is null, no animation
1448     * is played.
1449     *
1450     * @param folderInfo The FolderInfo describing the folder to open.
1451     */
1452    private void openFolder(FolderInfo folderInfo) {
1453        Folder openFolder;
1454
1455        if (folderInfo instanceof UserFolderInfo) {
1456            openFolder = UserFolder.fromXml(this);
1457        } else if (folderInfo instanceof LiveFolderInfo) {
1458            openFolder = com.android.launcher2.LiveFolder.fromXml(this, folderInfo);
1459        } else {
1460            return;
1461        }
1462
1463        openFolder.setDragController(mDragController);
1464        openFolder.setLauncher(this);
1465
1466        openFolder.bind(folderInfo);
1467        folderInfo.opened = true;
1468
1469        mWorkspace.addInScreen(openFolder, folderInfo.screen, 0, 0, 4, 4);
1470        openFolder.onOpen();
1471    }
1472
1473    public boolean onLongClick(View v) {
1474        switch (v.getId()) {
1475            case R.id.previous_screen:
1476                showPreviousPreview(v);
1477                return true;
1478            case R.id.next_screen:
1479                showNextPreview(v);
1480                return true;
1481        }
1482
1483        if (isWorkspaceLocked()) {
1484            return false;
1485        }
1486
1487        if (!(v instanceof CellLayout)) {
1488            v = (View) v.getParent();
1489        }
1490
1491        CellLayout.CellInfo cellInfo = (CellLayout.CellInfo) v.getTag();
1492
1493        // This happens when long clicking an item with the dpad/trackball
1494        if (cellInfo == null) {
1495            return true;
1496        }
1497
1498        if (mWorkspace.allowLongPress()) {
1499            if (cellInfo.cell == null) {
1500                if (cellInfo.valid) {
1501                    // User long pressed on empty space
1502                    mWorkspace.setAllowLongPress(false);
1503                    showAddDialog(cellInfo);
1504                }
1505            } else {
1506                if (!(cellInfo.cell instanceof Folder)) {
1507                    // User long pressed on an item
1508                    mWorkspace.startDrag(cellInfo);
1509                }
1510            }
1511        }
1512        return true;
1513    }
1514
1515    public boolean onKey(View v, int keyCode, KeyEvent event) {
1516        if (event.getAction() == KeyEvent.ACTION_UP) {
1517            dismissPreview(v);
1518        }
1519        return false;
1520    }
1521
1522    public boolean onTouch(View v, MotionEvent event) {
1523        if (event.getAction() == MotionEvent.ACTION_UP) {
1524            dismissPreview(v);
1525        }
1526        return false;
1527    }
1528
1529    private void dismissPreview(View v) {
1530        PopupWindow window = (PopupWindow) v.getTag();
1531        if (window != null) {
1532            window.dismiss();
1533            ((ImageView) v.getTag(R.id.workspace)).setImageBitmap(null);
1534            ((Bitmap) v.getTag(R.id.icon)).recycle();
1535
1536            v.setTag(R.id.workspace, null);
1537            v.setTag(R.id.icon, null);
1538        }
1539        v.setTag(null);
1540    }
1541
1542    private void showPreviousPreview(View anchor) {
1543        int current = mWorkspace.getCurrentScreen();
1544        if (current <= 0) return;
1545
1546        View previous = mWorkspace.getChildAt(current - 1);
1547        showPreview(anchor, previous);
1548    }
1549
1550    private void showNextPreview(View anchor) {
1551        int current = mWorkspace.getCurrentScreen();
1552        if (current >= mWorkspace.getChildCount() - 1) return;
1553
1554        View next = mWorkspace.getChildAt(current + 1);
1555        showPreview(anchor, next);
1556    }
1557
1558    private void showPreview(View anchor, View source) {
1559        boolean cacheEnabled = source.isDrawingCacheEnabled();
1560        source.setDrawingCacheEnabled(true);
1561        source.buildDrawingCache();
1562
1563        Bitmap cache = source.getDrawingCache();
1564        if (cache == null) return;
1565
1566        int width = cache.getWidth();
1567        int height = cache.getHeight();
1568        float sx = (int) (width / 2.5f) / (float) width;
1569        float sy = (int) (height / 2.5f) / (float) height;
1570
1571        Matrix m = new Matrix();
1572        m.setScale(sx, sy);
1573
1574        CellLayout cell = ((CellLayout) source);
1575        int x = cell.getLeftPadding();
1576        int y = cell.getTopPadding();
1577        width -= (x + cell.getRightPadding());
1578        height -= (y + cell.getBottomPadding());
1579
1580        Bitmap bitmap = Bitmap.createBitmap(cache, x, y, width, height, m, true);
1581
1582        ImageView preview = new ImageView(this);
1583        preview.setImageBitmap(bitmap);
1584        Drawable d = getResources().getDrawable(R.drawable.preview_popup);
1585        preview.setBackgroundDrawable(d);
1586
1587        Rect r = new Rect();
1588        d.getPadding(r);
1589        int extraW = r.left + r.right;
1590        int extraH = r.top + r.bottom;
1591
1592        PopupWindow p = new PopupWindow(preview, bitmap.getWidth() + extraW,
1593                bitmap.getHeight() + extraH);
1594        p.setWindowLayoutMode(ViewGroup.LayoutParams.WRAP_CONTENT,
1595                ViewGroup.LayoutParams.WRAP_CONTENT);
1596        p.setAnimationStyle(R.style.AnimationPreview);
1597        p.showAsDropDown(anchor, 0, 0);
1598
1599        source.destroyDrawingCache();
1600        if (!cacheEnabled) source.setDrawingCacheEnabled(cacheEnabled);
1601
1602        anchor.setTag(p);
1603        anchor.setTag(R.id.workspace, preview);
1604        anchor.setTag(R.id.icon, bitmap);
1605    }
1606
1607    View getDrawerHandle() {
1608        return mHandleView;
1609    }
1610
1611    Workspace getWorkspace() {
1612        return mWorkspace;
1613    }
1614
1615    @Override
1616    protected Dialog onCreateDialog(int id) {
1617        switch (id) {
1618            case DIALOG_CREATE_SHORTCUT:
1619                return new CreateShortcut().createDialog();
1620            case DIALOG_RENAME_FOLDER:
1621                return new RenameFolder().createDialog();
1622        }
1623
1624        return super.onCreateDialog(id);
1625    }
1626
1627    @Override
1628    protected void onPrepareDialog(int id, Dialog dialog) {
1629        switch (id) {
1630            case DIALOG_CREATE_SHORTCUT:
1631                break;
1632            case DIALOG_RENAME_FOLDER:
1633                if (mFolderInfo != null) {
1634                    EditText input = (EditText) dialog.findViewById(R.id.folder_name);
1635                    final CharSequence text = mFolderInfo.title;
1636                    input.setText(text);
1637                    input.setSelection(0, text.length());
1638                }
1639                break;
1640        }
1641    }
1642
1643    void showRenameDialog(FolderInfo info) {
1644        mFolderInfo = info;
1645        mWaitingForResult = true;
1646        showDialog(DIALOG_RENAME_FOLDER);
1647    }
1648
1649    private void showAddDialog(CellLayout.CellInfo cellInfo) {
1650        mAddItemCellInfo = cellInfo;
1651        mWaitingForResult = true;
1652        showDialog(DIALOG_CREATE_SHORTCUT);
1653    }
1654
1655    private void pickShortcut(int requestCode, int title) {
1656        Bundle bundle = new Bundle();
1657
1658        ArrayList<String> shortcutNames = new ArrayList<String>();
1659        shortcutNames.add(getString(R.string.group_applications));
1660        bundle.putStringArrayList(Intent.EXTRA_SHORTCUT_NAME, shortcutNames);
1661
1662        ArrayList<ShortcutIconResource> shortcutIcons = new ArrayList<ShortcutIconResource>();
1663        shortcutIcons.add(ShortcutIconResource.fromContext(Launcher.this,
1664                        R.drawable.ic_launcher_application));
1665        bundle.putParcelableArrayList(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, shortcutIcons);
1666
1667        Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1668        pickIntent.putExtra(Intent.EXTRA_INTENT, new Intent(Intent.ACTION_CREATE_SHORTCUT));
1669        pickIntent.putExtra(Intent.EXTRA_TITLE, getText(title));
1670        pickIntent.putExtras(bundle);
1671
1672        startActivityForResult(pickIntent, requestCode);
1673    }
1674
1675    private class RenameFolder {
1676        private EditText mInput;
1677
1678        Dialog createDialog() {
1679            mWaitingForResult = true;
1680            final View layout = View.inflate(Launcher.this, R.layout.rename_folder, null);
1681            mInput = (EditText) layout.findViewById(R.id.folder_name);
1682
1683            AlertDialog.Builder builder = new AlertDialog.Builder(Launcher.this);
1684            builder.setIcon(0);
1685            builder.setTitle(getString(R.string.rename_folder_title));
1686            builder.setCancelable(true);
1687            builder.setOnCancelListener(new Dialog.OnCancelListener() {
1688                public void onCancel(DialogInterface dialog) {
1689                    cleanup();
1690                }
1691            });
1692            builder.setNegativeButton(getString(R.string.cancel_action),
1693                new Dialog.OnClickListener() {
1694                    public void onClick(DialogInterface dialog, int which) {
1695                        cleanup();
1696                    }
1697                }
1698            );
1699            builder.setPositiveButton(getString(R.string.rename_action),
1700                new Dialog.OnClickListener() {
1701                    public void onClick(DialogInterface dialog, int which) {
1702                        changeFolderName();
1703                    }
1704                }
1705            );
1706            builder.setView(layout);
1707
1708            final AlertDialog dialog = builder.create();
1709            dialog.setOnShowListener(new DialogInterface.OnShowListener() {
1710                public void onShow(DialogInterface dialog) {
1711                    mInput.requestFocus();
1712                    InputMethodManager inputManager = (InputMethodManager)
1713                            getSystemService(Context.INPUT_METHOD_SERVICE);
1714                    inputManager.showSoftInput(mInput, 0);
1715                }
1716            });
1717
1718            return dialog;
1719        }
1720
1721        private void changeFolderName() {
1722            final String name = mInput.getText().toString();
1723            if (!TextUtils.isEmpty(name)) {
1724                // Make sure we have the right folder info
1725                mFolderInfo = mFolders.get(mFolderInfo.id);
1726                mFolderInfo.title = name;
1727                LauncherModel.updateItemInDatabase(Launcher.this, mFolderInfo);
1728
1729                if (mWorkspaceLoading) {
1730                    lockAllApps();
1731                    mModel.setWorkspaceDirty();
1732                    mModel.startLoader(Launcher.this, false);
1733                } else {
1734                    final FolderIcon folderIcon = (FolderIcon)
1735                            mWorkspace.getViewForTag(mFolderInfo);
1736                    if (folderIcon != null) {
1737                        folderIcon.setText(name);
1738                        getWorkspace().requestLayout();
1739                    } else {
1740                        lockAllApps();
1741                        mModel.setWorkspaceDirty();
1742                        mWorkspaceLoading = true;
1743                        mModel.startLoader(Launcher.this, false);
1744                    }
1745                }
1746            }
1747            cleanup();
1748        }
1749
1750        private void cleanup() {
1751            dismissDialog(DIALOG_RENAME_FOLDER);
1752            mWaitingForResult = false;
1753            mFolderInfo = null;
1754        }
1755    }
1756
1757    boolean isAllAppsVisible() {
1758        return mAllAppsGrid.isVisible();
1759    }
1760
1761    void showAllApps() {
1762        mAllAppsGrid.zoom(1.0f);
1763        //mWorkspace.hide();
1764
1765        mAllAppsGrid.setFocusable(true);
1766        mAllAppsGrid.requestFocus();
1767
1768        // TODO: fade these two too
1769        mDeleteZone.setVisibility(View.GONE);
1770        //mHandleView.setVisibility(View.GONE);
1771    }
1772
1773    void closeAllApps(boolean animated) {
1774        if (mAllAppsGrid.isVisible()) {
1775            mAllAppsGrid.zoom(0.0f);
1776            mAllAppsGrid.setFocusable(false);
1777            mWorkspace.getChildAt(mWorkspace.getCurrentScreen()).requestFocus();
1778
1779
1780            // TODO: fade these two too
1781            /*
1782            mDeleteZone.setVisibility(View.VISIBLE);
1783            mHandleView.setVisibility(View.VISIBLE);
1784            */
1785        }
1786    }
1787
1788    void lockAllApps() {
1789        // TODO
1790    }
1791
1792    void unlockAllApps() {
1793        // TODO
1794    }
1795
1796    /**
1797     * Displays the shortcut creation dialog and launches, if necessary, the
1798     * appropriate activity.
1799     */
1800    private class CreateShortcut implements DialogInterface.OnClickListener,
1801            DialogInterface.OnCancelListener, DialogInterface.OnDismissListener,
1802            DialogInterface.OnShowListener {
1803
1804        private AddAdapter mAdapter;
1805
1806        Dialog createDialog() {
1807            mWaitingForResult = true;
1808
1809            mAdapter = new AddAdapter(Launcher.this);
1810
1811            final AlertDialog.Builder builder = new AlertDialog.Builder(Launcher.this);
1812            builder.setTitle(getString(R.string.menu_item_add_item));
1813            builder.setAdapter(mAdapter, this);
1814
1815            builder.setInverseBackgroundForced(true);
1816
1817            AlertDialog dialog = builder.create();
1818            dialog.setOnCancelListener(this);
1819            dialog.setOnDismissListener(this);
1820            dialog.setOnShowListener(this);
1821
1822            return dialog;
1823        }
1824
1825        public void onCancel(DialogInterface dialog) {
1826            mWaitingForResult = false;
1827            cleanup();
1828        }
1829
1830        public void onDismiss(DialogInterface dialog) {
1831        }
1832
1833        private void cleanup() {
1834            dismissDialog(DIALOG_CREATE_SHORTCUT);
1835        }
1836
1837        /**
1838         * Handle the action clicked in the "Add to home" dialog.
1839         */
1840        public void onClick(DialogInterface dialog, int which) {
1841            Resources res = getResources();
1842            cleanup();
1843
1844            switch (which) {
1845                case AddAdapter.ITEM_SHORTCUT: {
1846                    // Insert extra item to handle picking application
1847                    pickShortcut(REQUEST_PICK_SHORTCUT, R.string.title_select_shortcut);
1848                    break;
1849                }
1850
1851                case AddAdapter.ITEM_APPWIDGET: {
1852                    int appWidgetId = Launcher.this.mAppWidgetHost.allocateAppWidgetId();
1853
1854                    Intent pickIntent = new Intent(AppWidgetManager.ACTION_APPWIDGET_PICK);
1855                    pickIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
1856                    // add the search widget
1857                    ArrayList<AppWidgetProviderInfo> customInfo =
1858                            new ArrayList<AppWidgetProviderInfo>();
1859                    AppWidgetProviderInfo info = new AppWidgetProviderInfo();
1860                    info.provider = new ComponentName(getPackageName(), "XXX.YYY");
1861                    info.label = getString(R.string.group_search);
1862                    info.icon = R.drawable.ic_search_widget;
1863                    customInfo.add(info);
1864                    pickIntent.putParcelableArrayListExtra(
1865                            AppWidgetManager.EXTRA_CUSTOM_INFO, customInfo);
1866                    ArrayList<Bundle> customExtras = new ArrayList<Bundle>();
1867                    Bundle b = new Bundle();
1868                    b.putString(EXTRA_CUSTOM_WIDGET, SEARCH_WIDGET);
1869                    customExtras.add(b);
1870                    pickIntent.putParcelableArrayListExtra(
1871                            AppWidgetManager.EXTRA_CUSTOM_EXTRAS, customExtras);
1872                    // start the pick activity
1873                    startActivityForResult(pickIntent, REQUEST_PICK_APPWIDGET);
1874                    break;
1875                }
1876
1877                case AddAdapter.ITEM_LIVE_FOLDER: {
1878                    // Insert extra item to handle inserting folder
1879                    Bundle bundle = new Bundle();
1880
1881                    ArrayList<String> shortcutNames = new ArrayList<String>();
1882                    shortcutNames.add(res.getString(R.string.group_folder));
1883                    bundle.putStringArrayList(Intent.EXTRA_SHORTCUT_NAME, shortcutNames);
1884
1885                    ArrayList<ShortcutIconResource> shortcutIcons =
1886                            new ArrayList<ShortcutIconResource>();
1887                    shortcutIcons.add(ShortcutIconResource.fromContext(Launcher.this,
1888                            R.drawable.ic_launcher_folder));
1889                    bundle.putParcelableArrayList(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, shortcutIcons);
1890
1891                    Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1892                    pickIntent.putExtra(Intent.EXTRA_INTENT,
1893                            new Intent(LiveFolders.ACTION_CREATE_LIVE_FOLDER));
1894                    pickIntent.putExtra(Intent.EXTRA_TITLE,
1895                            getText(R.string.title_select_live_folder));
1896                    pickIntent.putExtras(bundle);
1897
1898                    startActivityForResult(pickIntent, REQUEST_PICK_LIVE_FOLDER);
1899                    break;
1900                }
1901
1902                case AddAdapter.ITEM_WALLPAPER: {
1903                    startWallpaper();
1904                    break;
1905                }
1906            }
1907        }
1908
1909        public void onShow(DialogInterface dialog) {
1910        }
1911    }
1912
1913    /**
1914     * Receives notifications whenever the appwidgets are reset.
1915     */
1916    private class AppWidgetResetObserver extends ContentObserver {
1917        public AppWidgetResetObserver() {
1918            super(new Handler());
1919        }
1920
1921        @Override
1922        public void onChange(boolean selfChange) {
1923            onAppWidgetReset();
1924        }
1925    }
1926
1927    /**
1928     * Implementation of the method from LauncherModel.Callbacks.
1929     */
1930    public int getCurrentWorkspaceScreen() {
1931        return mWorkspace.getCurrentScreen();
1932    }
1933
1934    /**
1935     * Refreshes the shortcuts shown on the workspace.
1936     *
1937     * Implementation of the method from LauncherModel.Callbacks.
1938     */
1939    public void startBinding() {
1940        final Workspace workspace = mWorkspace;
1941        int count = workspace.getChildCount();
1942        for (int i = 0; i < count; i++) {
1943            // Use removeAllViewsInLayout() to avoid an extra requestLayout() and invalidate().
1944            ((ViewGroup) workspace.getChildAt(i)).removeAllViewsInLayout();
1945        }
1946
1947        if (DEBUG_USER_INTERFACE) {
1948            android.widget.Button finishButton = new android.widget.Button(this);
1949            finishButton.setText("Finish");
1950            workspace.addInScreen(finishButton, 1, 0, 0, 1, 1);
1951
1952            finishButton.setOnClickListener(new android.widget.Button.OnClickListener() {
1953                public void onClick(View v) {
1954                    finish();
1955                }
1956            });
1957        }
1958    }
1959
1960    /**
1961     * Bind the items start-end from the list.
1962     *
1963     * Implementation of the method from LauncherModel.Callbacks.
1964     */
1965    public void bindItems(ArrayList<ItemInfo> shortcuts, int start, int end) {
1966
1967        final Workspace workspace = mWorkspace;
1968
1969        for (int i=start; i<end; i++) {
1970            final ItemInfo item = shortcuts.get(i);
1971            mDesktopItems.add(item);
1972            switch (item.itemType) {
1973                case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION:
1974                case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
1975                    final View shortcut = createShortcut((ApplicationInfo) item);
1976                    workspace.addInScreen(shortcut, item.screen, item.cellX, item.cellY, 1, 1,
1977                            false);
1978                    break;
1979                case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER:
1980                    final FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon, this,
1981                            (ViewGroup) workspace.getChildAt(workspace.getCurrentScreen()),
1982                            (UserFolderInfo) item);
1983                    workspace.addInScreen(newFolder, item.screen, item.cellX, item.cellY, 1, 1,
1984                            false);
1985                    break;
1986                case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER:
1987                    final FolderIcon newLiveFolder = LiveFolderIcon.fromXml(
1988                            R.layout.live_folder_icon, this,
1989                            (ViewGroup) workspace.getChildAt(workspace.getCurrentScreen()),
1990                            (LiveFolderInfo) item);
1991                    workspace.addInScreen(newLiveFolder, item.screen, item.cellX, item.cellY, 1, 1,
1992                            false);
1993                    break;
1994                case LauncherSettings.Favorites.ITEM_TYPE_WIDGET_SEARCH:
1995                    final int screen = workspace.getCurrentScreen();
1996                    final View view = mInflater.inflate(R.layout.widget_search,
1997                            (ViewGroup) workspace.getChildAt(screen), false);
1998
1999                    Search search = (Search) view.findViewById(R.id.widget_search);
2000                    search.setLauncher(this);
2001
2002                    final Widget widget = (Widget) item;
2003                    view.setTag(widget);
2004
2005                    workspace.addWidget(view, widget, false);
2006                    break;
2007            }
2008        }
2009
2010        workspace.requestLayout();
2011    }
2012
2013    /**
2014     * Implementation of the method from LauncherModel.Callbacks.
2015     */
2016    public void bindFolders(HashMap<Long, FolderInfo> folders) {
2017        mFolders.clear();
2018        mFolders.putAll(folders);
2019    }
2020
2021    /**
2022     * Add the views for a widget to the workspace.
2023     *
2024     * Implementation of the method from LauncherModel.Callbacks.
2025     */
2026    public void bindAppWidget(LauncherAppWidgetInfo item) {
2027        final Workspace workspace = mWorkspace;
2028
2029        final int appWidgetId = item.appWidgetId;
2030        final AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
2031        item.hostView = mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
2032
2033        item.hostView.setAppWidget(appWidgetId, appWidgetInfo);
2034        item.hostView.setTag(item);
2035
2036        workspace.addInScreen(item.hostView, item.screen, item.cellX,
2037                item.cellY, item.spanX, item.spanY, false);
2038
2039        workspace.requestLayout();
2040
2041        mDesktopItems.add(item);
2042    }
2043
2044    /**
2045     * Callback saying that there aren't any more items to bind.
2046     *
2047     * Implementation of the method from LauncherModel.Callbacks.
2048     */
2049    public void finishBindingItems() {
2050        if (mSavedState != null) {
2051            if (!mWorkspace.hasFocus()) {
2052                mWorkspace.getChildAt(mWorkspace.getCurrentScreen()).requestFocus();
2053            }
2054
2055            final long[] userFolders = mSavedState.getLongArray(RUNTIME_STATE_USER_FOLDERS);
2056            if (userFolders != null) {
2057                for (long folderId : userFolders) {
2058                    final FolderInfo info = mFolders.get(folderId);
2059                    if (info != null) {
2060                        openFolder(info);
2061                    }
2062                }
2063                final Folder openFolder = mWorkspace.getOpenFolder();
2064                if (openFolder != null) {
2065                    openFolder.requestFocus();
2066                }
2067            }
2068
2069            final boolean allApps = mSavedState.getBoolean(RUNTIME_STATE_ALL_APPS_FOLDER, false);
2070            if (allApps) {
2071                showAllApps();
2072            }
2073
2074            mSavedState = null;
2075        }
2076
2077        if (mSavedInstanceState != null) {
2078            super.onRestoreInstanceState(mSavedInstanceState);
2079            mSavedInstanceState = null;
2080        }
2081
2082        Log.d(TAG, "finishBindingItems done");
2083        mWorkspaceLoading = false;
2084    }
2085
2086    /**
2087     * Add the icons for all apps.
2088     *
2089     * Implementation of the method from LauncherModel.Callbacks.
2090     */
2091    public void bindAllApplications(ArrayList<ApplicationInfo> apps) {
2092        mAllAppsGrid.setApps(apps);
2093    }
2094
2095    /**
2096     * A package was installed.
2097     *
2098     * Implementation of the method from LauncherModel.Callbacks.
2099     */
2100    public void bindPackageAdded(ArrayList<ApplicationInfo> apps) {
2101        removeDialog(DIALOG_CREATE_SHORTCUT);
2102        mAllAppsGrid.addApps(apps);
2103    }
2104
2105    /**
2106     * A package was updated.
2107     *
2108     * Implementation of the method from LauncherModel.Callbacks.
2109     */
2110    public void bindPackageUpdated(String packageName, ArrayList<ApplicationInfo> apps) {
2111        removeDialog(DIALOG_CREATE_SHORTCUT);
2112        mWorkspace.updateShortcutsForPackage(packageName);
2113    }
2114
2115    /**
2116     * A package was uninstalled.
2117     *
2118     * Implementation of the method from LauncherModel.Callbacks.
2119     */
2120    public void bindPackageRemoved(String packageName, ArrayList<ApplicationInfo> apps) {
2121        removeDialog(DIALOG_CREATE_SHORTCUT);
2122        mWorkspace.removeShortcutsForPackage(packageName);
2123        mAllAppsGrid.removeApps(apps);
2124    }
2125}
2126