Launcher.java revision eb5615d1af1ef38fd934590b9aec19e1d0cd0908 
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.Intent.ShortcutIconResource;
34import android.content.IntentFilter;
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.Rect;
43import android.graphics.Canvas;
44import android.graphics.drawable.Drawable;
45import android.graphics.drawable.ColorDrawable;
46import android.os.Bundle;
47import android.os.Handler;
48import android.os.Parcelable;
49import android.os.RemoteException;
50import android.os.ServiceManager;
51import android.os.SystemProperties;
52import android.provider.LiveFolders;
53import android.text.Selection;
54import android.text.SpannableStringBuilder;
55import android.text.TextUtils;
56import android.text.method.TextKeyListener;
57import android.util.Log;
58import android.view.Display;
59import android.view.HapticFeedbackConstants;
60import android.view.KeyEvent;
61import android.view.LayoutInflater;
62import android.view.Menu;
63import android.view.MenuItem;
64import android.view.View;
65import android.view.ViewGroup;
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.widget.LinearLayout;
74import android.appwidget.AppWidgetManager;
75import android.appwidget.AppWidgetProviderInfo;
76
77import java.util.ArrayList;
78import java.util.HashMap;
79import java.io.DataOutputStream;
80import java.io.FileNotFoundException;
81import java.io.IOException;
82import java.io.DataInputStream;
83
84/**
85 * Default launcher application.
86 */
87public final class Launcher extends Activity
88        implements View.OnClickListener, OnLongClickListener, LauncherModel.Callbacks {
89    static final String TAG = "Launcher";
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 BroadcastReceiver mCloseSystemDialogsReceiver
162            = new CloseSystemDialogsIntentReceiver();
163    private final ContentObserver mWidgetObserver = new AppWidgetResetObserver();
164
165    private LayoutInflater mInflater;
166
167    private DragController mDragController;
168    private Workspace mWorkspace;
169
170    private AppWidgetManager mAppWidgetManager;
171    private LauncherAppWidgetHost mAppWidgetHost;
172
173    private CellLayout.CellInfo mAddItemCellInfo;
174    private CellLayout.CellInfo mMenuAddInfo;
175    private final int[] mCellCoordinates = new int[2];
176    private FolderInfo mFolderInfo;
177
178    private DeleteZone mDeleteZone;
179    private HandleView mHandleView;
180    private AllAppsView mAllAppsGrid;
181
182    private Bundle mSavedState;
183
184    private SpannableStringBuilder mDefaultKeySsb = null;
185
186    private boolean mIsNewIntent;
187
188    private boolean mWorkspaceLoading = true;
189
190    private boolean mRestoring;
191    private boolean mWaitingForResult;
192
193    private Bundle mSavedInstanceState;
194
195    private LauncherModel mModel;
196
197    private ArrayList<ItemInfo> mDesktopItems = new ArrayList<ItemInfo>();
198    private static HashMap<Long, FolderInfo> mFolders = new HashMap<Long, FolderInfo>();
199
200    private ImageView mPreviousView;
201    private ImageView mNextView;
202
203    @Override
204    protected void onCreate(Bundle savedInstanceState) {
205        super.onCreate(savedInstanceState);
206
207        mModel = ((LauncherApplication)getApplication()).setLauncher(this);
208        mDragController = new DragController(this);
209        mInflater = getLayoutInflater();
210
211        IntentFilter filter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
212        registerReceiver(mCloseSystemDialogsReceiver, filter);
213
214        mAppWidgetManager = AppWidgetManager.getInstance(this);
215        mAppWidgetHost = new LauncherAppWidgetHost(this, APPWIDGET_HOST_ID);
216        mAppWidgetHost.startListening();
217
218        if (PROFILE_STARTUP) {
219            android.os.Debug.startMethodTracing("/sdcard/launcher");
220        }
221
222        checkForLocaleChange();
223        setWallpaperDimension();
224
225        setContentView(R.layout.launcher);
226        setupViews();
227
228        registerContentObservers();
229
230        lockAllApps();
231
232        mSavedState = savedInstanceState;
233        restoreState(mSavedState);
234
235        if (PROFILE_STARTUP) {
236            android.os.Debug.stopMethodTracing();
237        }
238
239        // We have a new AllAppsView, we need to re-bind everything, and it could have
240        // changed in our absence.
241        mModel.setAllAppsDirty();
242        mModel.setWorkspaceDirty();
243
244        if (!mRestoring) {
245            mModel.startLoader(this, true);
246        }
247
248        // For handling default keys
249        mDefaultKeySsb = new SpannableStringBuilder();
250        Selection.setSelection(mDefaultKeySsb, 0);
251    }
252
253    private void checkForLocaleChange() {
254        final LocaleConfiguration localeConfiguration = new LocaleConfiguration();
255        readConfiguration(this, localeConfiguration);
256
257        final Configuration configuration = getResources().getConfiguration();
258
259        final String previousLocale = localeConfiguration.locale;
260        final String locale = configuration.locale.toString();
261
262        final int previousMcc = localeConfiguration.mcc;
263        final int mcc = configuration.mcc;
264
265        final int previousMnc = localeConfiguration.mnc;
266        final int mnc = configuration.mnc;
267
268        boolean localeChanged = !locale.equals(previousLocale) || mcc != previousMcc || mnc != previousMnc;
269
270        if (localeChanged) {
271            localeConfiguration.locale = locale;
272            localeConfiguration.mcc = mcc;
273            localeConfiguration.mnc = mnc;
274
275            writeConfiguration(this, localeConfiguration);
276            AppInfoCache.flush();
277        }
278    }
279
280    private static class LocaleConfiguration {
281        public String locale;
282        public int mcc = -1;
283        public int mnc = -1;
284    }
285
286    private static void readConfiguration(Context context, LocaleConfiguration configuration) {
287        DataInputStream in = null;
288        try {
289            in = new DataInputStream(context.openFileInput(PREFERENCES));
290            configuration.locale = in.readUTF();
291            configuration.mcc = in.readInt();
292            configuration.mnc = in.readInt();
293        } catch (FileNotFoundException e) {
294            // Ignore
295        } catch (IOException e) {
296            // Ignore
297        } finally {
298            if (in != null) {
299                try {
300                    in.close();
301                } catch (IOException e) {
302                    // Ignore
303                }
304            }
305        }
306    }
307
308    private static void writeConfiguration(Context context, LocaleConfiguration configuration) {
309        DataOutputStream out = null;
310        try {
311            out = new DataOutputStream(context.openFileOutput(PREFERENCES, MODE_PRIVATE));
312            out.writeUTF(configuration.locale);
313            out.writeInt(configuration.mcc);
314            out.writeInt(configuration.mnc);
315            out.flush();
316        } catch (FileNotFoundException e) {
317            // Ignore
318        } catch (IOException e) {
319            //noinspection ResultOfMethodCallIgnored
320            context.getFileStreamPath(PREFERENCES).delete();
321        } finally {
322            if (out != null) {
323                try {
324                    out.close();
325                } catch (IOException e) {
326                    // Ignore
327                }
328            }
329        }
330    }
331
332    static int getScreen() {
333        synchronized (sLock) {
334            return sScreen;
335        }
336    }
337
338    static void setScreen(int screen) {
339        synchronized (sLock) {
340            sScreen = screen;
341        }
342    }
343
344    private void setWallpaperDimension() {
345        WallpaperManager wpm = (WallpaperManager)getSystemService(WALLPAPER_SERVICE);
346
347        Display display = getWindowManager().getDefaultDisplay();
348        boolean isPortrait = display.getWidth() < display.getHeight();
349
350        final int width = isPortrait ? display.getWidth() : display.getHeight();
351        final int height = isPortrait ? display.getHeight() : display.getWidth();
352        wpm.suggestDesiredDimensions(width * WALLPAPER_SCREENS_SPAN, height);
353    }
354
355    @Override
356    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
357        mWaitingForResult = false;
358
359        // The pattern used here is that a user PICKs a specific application,
360        // which, depending on the target, might need to CREATE the actual target.
361
362        // For example, the user would PICK_SHORTCUT for "Music playlist", and we
363        // launch over to the Music app to actually CREATE_SHORTCUT.
364
365        if (resultCode == RESULT_OK && mAddItemCellInfo != null) {
366            switch (requestCode) {
367                case REQUEST_PICK_APPLICATION:
368                    completeAddApplication(this, data, mAddItemCellInfo);
369                    break;
370                case REQUEST_PICK_SHORTCUT:
371                    processShortcut(data, REQUEST_PICK_APPLICATION, REQUEST_CREATE_SHORTCUT);
372                    break;
373                case REQUEST_CREATE_SHORTCUT:
374                    completeAddShortcut(data, mAddItemCellInfo);
375                    break;
376                case REQUEST_PICK_LIVE_FOLDER:
377                    addLiveFolder(data);
378                    break;
379                case REQUEST_CREATE_LIVE_FOLDER:
380                    completeAddLiveFolder(data, mAddItemCellInfo);
381                    break;
382                case REQUEST_PICK_APPWIDGET:
383                    addAppWidget(data);
384                    break;
385                case REQUEST_CREATE_APPWIDGET:
386                    completeAddAppWidget(data, mAddItemCellInfo);
387                    break;
388                case REQUEST_PICK_WALLPAPER:
389                    // We just wanted the activity result here so we can clear mWaitingForResult
390                    break;
391            }
392        } else if ((requestCode == REQUEST_PICK_APPWIDGET ||
393                requestCode == REQUEST_CREATE_APPWIDGET) && resultCode == RESULT_CANCELED &&
394                data != null) {
395            // Clean up the appWidgetId if we canceled
396            int appWidgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
397            if (appWidgetId != -1) {
398                mAppWidgetHost.deleteAppWidgetId(appWidgetId);
399            }
400        }
401    }
402
403    @Override
404    protected void onResume() {
405        super.onResume();
406
407        if (mRestoring) {
408            mWorkspaceLoading = true;
409            mModel.startLoader(this, true);
410            mRestoring = false;
411        }
412
413        // If this was a new intent (i.e., the mIsNewIntent flag got set to true by
414        // onNewIntent), then close the search dialog if needed, because it probably
415        // came from the user pressing 'home' (rather than, for example, pressing 'back').
416        if (mIsNewIntent) {
417            // Post to a handler so that this happens after the search dialog tries to open
418            // itself again.
419            mWorkspace.post(new Runnable() {
420                public void run() {
421                    stopSearch();
422                }
423            });
424        }
425
426        mIsNewIntent = false;
427    }
428
429    @Override
430    protected void onPause() {
431        super.onPause();
432        dismissPreview(mPreviousView);
433        dismissPreview(mNextView);
434        mDragController.cancelDrag();
435    }
436
437    @Override
438    public Object onRetainNonConfigurationInstance() {
439        // Flag the loader to stop early before switching
440        mModel.stopLoader();
441
442        if (PROFILE_ROTATE) {
443            android.os.Debug.startMethodTracing("/sdcard/launcher-rotate");
444        }
445        return null;
446    }
447
448    private boolean acceptFilter() {
449        final InputMethodManager inputManager = (InputMethodManager)
450                getSystemService(Context.INPUT_METHOD_SERVICE);
451        return !inputManager.isFullscreenMode();
452    }
453
454    @Override
455    public boolean onKeyDown(int keyCode, KeyEvent event) {
456        boolean handled = super.onKeyDown(keyCode, event);
457        if (!handled && acceptFilter() && keyCode != KeyEvent.KEYCODE_ENTER) {
458            boolean gotKey = TextKeyListener.getInstance().onKeyDown(mWorkspace, mDefaultKeySsb,
459                    keyCode, event);
460            if (gotKey && mDefaultKeySsb != null && mDefaultKeySsb.length() > 0) {
461                // something usable has been typed - start a search
462                // the typed text will be retrieved and cleared by
463                // showSearchDialog()
464                // If there are multiple keystrokes before the search dialog takes focus,
465                // onSearchRequested() will be called for every keystroke,
466                // but it is idempotent, so it's fine.
467                return onSearchRequested();
468            }
469        }
470
471        return handled;
472    }
473
474    private String getTypedText() {
475        return mDefaultKeySsb.toString();
476    }
477
478    private void clearTypedText() {
479        mDefaultKeySsb.clear();
480        mDefaultKeySsb.clearSpans();
481        Selection.setSelection(mDefaultKeySsb, 0);
482    }
483
484    /**
485     * Restores the previous state, if it exists.
486     *
487     * @param savedState The previous state.
488     */
489    private void restoreState(Bundle savedState) {
490        if (savedState == null) {
491            return;
492        }
493
494        final boolean allApps = savedState.getBoolean(RUNTIME_STATE_ALL_APPS_FOLDER, false);
495        if (allApps) {
496            showAllApps(false);
497        }
498
499        final int currentScreen = savedState.getInt(RUNTIME_STATE_CURRENT_SCREEN, -1);
500        if (currentScreen > -1) {
501            mWorkspace.setCurrentScreen(currentScreen);
502        }
503
504        final int addScreen = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SCREEN, -1);
505        if (addScreen > -1) {
506            mAddItemCellInfo = new CellLayout.CellInfo();
507            final CellLayout.CellInfo addItemCellInfo = mAddItemCellInfo;
508            addItemCellInfo.valid = true;
509            addItemCellInfo.screen = addScreen;
510            addItemCellInfo.cellX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_X);
511            addItemCellInfo.cellY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_Y);
512            addItemCellInfo.spanX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_X);
513            addItemCellInfo.spanY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y);
514            addItemCellInfo.findVacantCellsFromOccupied(
515                    savedState.getBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS),
516                    savedState.getInt(RUNTIME_STATE_PENDING_ADD_COUNT_X),
517                    savedState.getInt(RUNTIME_STATE_PENDING_ADD_COUNT_Y));
518            mRestoring = true;
519        }
520
521        boolean renameFolder = savedState.getBoolean(RUNTIME_STATE_PENDING_FOLDER_RENAME, false);
522        if (renameFolder) {
523            long id = savedState.getLong(RUNTIME_STATE_PENDING_FOLDER_RENAME_ID);
524            mFolderInfo = mModel.getFolderById(this, mFolders, id);
525            mRestoring = true;
526        }
527    }
528
529    /**
530     * Finds all the views we need and configure them properly.
531     */
532    private void setupViews() {
533        DragController dragController = mDragController;
534
535        DragLayer dragLayer = (DragLayer) findViewById(R.id.drag_layer);
536        dragLayer.setDragController(dragController);
537
538        mAllAppsGrid = (AllAppsView)dragLayer.findViewById(R.id.all_apps_view);
539        mAllAppsGrid.setLauncher(this);
540        mAllAppsGrid.setDragController(dragController);
541        mAllAppsGrid.setWillNotDraw(false); // We don't want a hole punched in our window.
542        // Manage focusability manually since this thing is always visible
543        mAllAppsGrid.setFocusable(false);
544
545        mWorkspace = (Workspace) dragLayer.findViewById(R.id.workspace);
546        final Workspace workspace = mWorkspace;
547
548        DeleteZone deleteZone = (DeleteZone) dragLayer.findViewById(R.id.delete_zone);
549        mDeleteZone = deleteZone;
550
551        mHandleView = (HandleView) findViewById(R.id.all_apps_button);
552        mHandleView.setLauncher(this);
553        mHandleView.setOnClickListener(this);
554
555        mPreviousView = (ImageView) dragLayer.findViewById(R.id.previous_screen);
556        mNextView = (ImageView) dragLayer.findViewById(R.id.next_screen);
557
558        Drawable previous = mPreviousView.getDrawable();
559        Drawable next = mNextView.getDrawable();
560        mWorkspace.setIndicators(previous, next);
561
562        mPreviousView.setHapticFeedbackEnabled(false);
563        mPreviousView.setOnLongClickListener(this);
564        mNextView.setHapticFeedbackEnabled(false);
565        mNextView.setOnLongClickListener(this);
566
567        workspace.setOnLongClickListener(this);
568        workspace.setDragController(dragController);
569        workspace.setLauncher(this);
570
571        deleteZone.setLauncher(this);
572        deleteZone.setDragController(dragController);
573        deleteZone.setHandle(mHandleView);
574
575        dragController.setDragScoller(workspace);
576        dragController.setDragListener(deleteZone);
577        dragController.setScrollView(dragLayer);
578
579        // The order here is bottom to top.
580        dragController.addDropTarget(workspace);
581        dragController.addDropTarget(deleteZone);
582    }
583
584    @SuppressWarnings({"UnusedDeclaration"})
585    public void previousScreen(View v) {
586        if (!isAllAppsVisible()) {
587            mWorkspace.scrollLeft();
588        }
589    }
590
591    @SuppressWarnings({"UnusedDeclaration"})
592    public void nextScreen(View v) {
593        if (!isAllAppsVisible()) {
594            mWorkspace.scrollRight();
595        }
596    }
597
598    /**
599     * Creates a view representing a shortcut.
600     *
601     * @param info The data structure describing the shortcut.
602     *
603     * @return A View inflated from R.layout.application.
604     */
605    View createShortcut(ApplicationInfo info) {
606        return createShortcut(R.layout.application,
607                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), info);
608    }
609
610    /**
611     * Creates a view representing a shortcut inflated from the specified resource.
612     *
613     * @param layoutResId The id of the XML layout used to create the shortcut.
614     * @param parent The group the shortcut belongs to.
615     * @param info The data structure describing the shortcut.
616     *
617     * @return A View inflated from layoutResId.
618     */
619    View createShortcut(int layoutResId, ViewGroup parent, ApplicationInfo info) {
620        TextView favorite = (TextView) mInflater.inflate(layoutResId, parent, false);
621
622        if (info.icon == null) {
623            info.icon = AppInfoCache.getIconDrawable(getPackageManager(), info);
624        }
625        if (!info.filtered) {
626            info.icon = Utilities.createIconThumbnail(info.icon, this);
627            info.filtered = true;
628        }
629
630        favorite.setCompoundDrawablesWithIntrinsicBounds(null, info.icon, null, null);
631        favorite.setText(info.title);
632        favorite.setTag(info);
633        favorite.setOnClickListener(this);
634
635        return favorite;
636    }
637
638    /**
639     * Add an application shortcut to the workspace.
640     *
641     * @param data The intent describing the application.
642     * @param cellInfo The position on screen where to create the shortcut.
643     */
644    void completeAddApplication(Context context, Intent data, CellLayout.CellInfo cellInfo) {
645        cellInfo.screen = mWorkspace.getCurrentScreen();
646        if (!findSingleSlot(cellInfo)) return;
647
648        final ApplicationInfo info = infoFromApplicationIntent(context, data);
649        if (info != null) {
650            mWorkspace.addApplicationShortcut(info, cellInfo, isWorkspaceLocked());
651        }
652    }
653
654    private static ApplicationInfo infoFromApplicationIntent(Context context, Intent data) {
655        ComponentName component = data.getComponent();
656        PackageManager packageManager = context.getPackageManager();
657        ActivityInfo activityInfo = null;
658        try {
659            activityInfo = packageManager.getActivityInfo(component, 0 /* no flags */);
660        } catch (NameNotFoundException e) {
661            Log.e(TAG, "Couldn't find ActivityInfo for selected application", e);
662        }
663
664        if (activityInfo != null) {
665            ApplicationInfo itemInfo = new ApplicationInfo();
666
667            itemInfo.title = activityInfo.loadLabel(packageManager);
668            if (itemInfo.title == null) {
669                itemInfo.title = activityInfo.name;
670            }
671
672            itemInfo.setActivity(component, Intent.FLAG_ACTIVITY_NEW_TASK |
673                    Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
674            itemInfo.icon = activityInfo.loadIcon(packageManager);
675            itemInfo.container = ItemInfo.NO_ID;
676
677            return itemInfo;
678        }
679
680        return null;
681    }
682
683    /**
684     * Add a shortcut to the workspace.
685     *
686     * @param data The intent describing the shortcut.
687     * @param cellInfo The position on screen where to create the shortcut.
688     */
689    private void completeAddShortcut(Intent data, CellLayout.CellInfo cellInfo) {
690        cellInfo.screen = mWorkspace.getCurrentScreen();
691        if (!findSingleSlot(cellInfo)) return;
692
693        final ApplicationInfo info = addShortcut(this, data, cellInfo, false);
694
695        if (!mRestoring) {
696            final View view = createShortcut(info);
697            mWorkspace.addInCurrentScreen(view, cellInfo.cellX, cellInfo.cellY, 1, 1,
698                    isWorkspaceLocked());
699        }
700    }
701
702
703    /**
704     * Add a widget to the workspace.
705     *
706     * @param data The intent describing the appWidgetId.
707     * @param cellInfo The position on screen where to create the widget.
708     */
709    private void completeAddAppWidget(Intent data, CellLayout.CellInfo cellInfo) {
710        Bundle extras = data.getExtras();
711        int appWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
712
713        if (LOGD) Log.d(TAG, "dumping extras content=" + extras.toString());
714
715        AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
716
717        // Calculate the grid spans needed to fit this widget
718        CellLayout layout = (CellLayout) mWorkspace.getChildAt(cellInfo.screen);
719        int[] spans = layout.rectToCell(appWidgetInfo.minWidth, appWidgetInfo.minHeight);
720
721        // Try finding open space on Launcher screen
722        final int[] xy = mCellCoordinates;
723        if (!findSlot(cellInfo, xy, spans[0], spans[1])) {
724            if (appWidgetId != -1) mAppWidgetHost.deleteAppWidgetId(appWidgetId);
725            return;
726        }
727
728        // Build Launcher-specific widget info and save to database
729        LauncherAppWidgetInfo launcherInfo = new LauncherAppWidgetInfo(appWidgetId);
730        launcherInfo.spanX = spans[0];
731        launcherInfo.spanY = spans[1];
732
733        LauncherModel.addItemToDatabase(this, launcherInfo,
734                LauncherSettings.Favorites.CONTAINER_DESKTOP,
735                mWorkspace.getCurrentScreen(), xy[0], xy[1], false);
736
737        if (!mRestoring) {
738            mDesktopItems.add(launcherInfo);
739
740            // Perform actual inflation because we're live
741            launcherInfo.hostView = mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
742
743            launcherInfo.hostView.setAppWidget(appWidgetId, appWidgetInfo);
744            launcherInfo.hostView.setTag(launcherInfo);
745
746            mWorkspace.addInCurrentScreen(launcherInfo.hostView, xy[0], xy[1],
747                    launcherInfo.spanX, launcherInfo.spanY, isWorkspaceLocked());
748        }
749    }
750
751    public void removeAppWidget(LauncherAppWidgetInfo launcherInfo) {
752        mDesktopItems.remove(launcherInfo);
753        launcherInfo.hostView = null;
754    }
755
756    public LauncherAppWidgetHost getAppWidgetHost() {
757        return mAppWidgetHost;
758    }
759
760    static ApplicationInfo addShortcut(Context context, Intent data,
761            CellLayout.CellInfo cellInfo, boolean notify) {
762
763        final ApplicationInfo info = infoFromShortcutIntent(context, data);
764        LauncherModel.addItemToDatabase(context, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
765                cellInfo.screen, cellInfo.cellX, cellInfo.cellY, notify);
766
767        return info;
768    }
769
770    private static ApplicationInfo infoFromShortcutIntent(Context context, Intent data) {
771        Intent intent = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_INTENT);
772        String name = data.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
773        Bitmap bitmap = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_ICON);
774
775        Drawable icon = null;
776        boolean filtered = false;
777        boolean customIcon = false;
778        ShortcutIconResource iconResource = null;
779
780        if (bitmap != null) {
781            icon = new FastBitmapDrawable(Utilities.createBitmapThumbnail(bitmap, context));
782            filtered = true;
783            customIcon = true;
784        } else {
785            Parcelable extra = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE);
786            if (extra != null && extra instanceof ShortcutIconResource) {
787                try {
788                    iconResource = (ShortcutIconResource) extra;
789                    final PackageManager packageManager = context.getPackageManager();
790                    Resources resources = packageManager.getResourcesForApplication(
791                            iconResource.packageName);
792                    final int id = resources.getIdentifier(iconResource.resourceName, null, null);
793                    icon = resources.getDrawable(id);
794                } catch (Exception e) {
795                    Log.w(TAG, "Could not load shortcut icon: " + extra);
796                }
797            }
798        }
799
800        if (icon == null) {
801            icon = context.getPackageManager().getDefaultActivityIcon();
802        }
803
804        final ApplicationInfo info = new ApplicationInfo();
805        info.icon = icon;
806        info.filtered = filtered;
807        info.title = name;
808        info.intent = intent;
809        info.customIcon = customIcon;
810        info.iconResource = iconResource;
811
812        return info;
813    }
814
815    void closeSystemDialogs() {
816        getWindow().closeAllPanels();
817
818        try {
819            dismissDialog(DIALOG_CREATE_SHORTCUT);
820            // Unlock the workspace if the dialog was showing
821        } catch (Exception e) {
822            // An exception is thrown if the dialog is not visible, which is fine
823        }
824
825        try {
826            dismissDialog(DIALOG_RENAME_FOLDER);
827            // Unlock the workspace if the dialog was showing
828        } catch (Exception e) {
829            // An exception is thrown if the dialog is not visible, which is fine
830        }
831
832        // Whatever we were doing is hereby canceled.
833        mWaitingForResult = false;
834    }
835
836    @Override
837    protected void onNewIntent(Intent intent) {
838        super.onNewIntent(intent);
839
840        // Close the menu
841        if (Intent.ACTION_MAIN.equals(intent.getAction())) {
842            // also will cancel mWaitingForResult.
843            closeSystemDialogs();
844
845            // Set this flag so that onResume knows to close the search dialog if it's open,
846            // because this was a new intent (thus a press of 'home' or some such) rather than
847            // for example onResume being called when the user pressed the 'back' button.
848            mIsNewIntent = true;
849
850            boolean alreadyOnHome = ((intent.getFlags() & Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT)
851                        != Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT);
852            boolean allAppsVisible = isAllAppsVisible();
853            if (!mWorkspace.isDefaultScreenShowing()) {
854                mWorkspace.moveToDefaultScreen(alreadyOnHome && !allAppsVisible);
855            }
856            closeAllApps(alreadyOnHome && allAppsVisible);
857
858            final View v = getWindow().peekDecorView();
859            if (v != null && v.getWindowToken() != null) {
860                InputMethodManager imm = (InputMethodManager)getSystemService(
861                        INPUT_METHOD_SERVICE);
862                imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
863            }
864        }
865    }
866
867    @Override
868    protected void onRestoreInstanceState(Bundle savedInstanceState) {
869        // Do not call super here
870        mSavedInstanceState = savedInstanceState;
871    }
872
873    @Override
874    protected void onSaveInstanceState(Bundle outState) {
875        outState.putInt(RUNTIME_STATE_CURRENT_SCREEN, mWorkspace.getCurrentScreen());
876
877        final ArrayList<Folder> folders = mWorkspace.getOpenFolders();
878        if (folders.size() > 0) {
879            final int count = folders.size();
880            long[] ids = new long[count];
881            for (int i = 0; i < count; i++) {
882                final FolderInfo info = folders.get(i).getInfo();
883                ids[i] = info.id;
884            }
885            outState.putLongArray(RUNTIME_STATE_USER_FOLDERS, ids);
886        } else {
887            super.onSaveInstanceState(outState);
888        }
889
890        // TODO should not do this if the drawer is currently closing.
891        if (isAllAppsVisible()) {
892            outState.putBoolean(RUNTIME_STATE_ALL_APPS_FOLDER, true);
893        }
894
895        if (mAddItemCellInfo != null && mAddItemCellInfo.valid && mWaitingForResult) {
896            final CellLayout.CellInfo addItemCellInfo = mAddItemCellInfo;
897            final CellLayout layout = (CellLayout) mWorkspace.getChildAt(addItemCellInfo.screen);
898
899            outState.putInt(RUNTIME_STATE_PENDING_ADD_SCREEN, addItemCellInfo.screen);
900            outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_X, addItemCellInfo.cellX);
901            outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_Y, addItemCellInfo.cellY);
902            outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_X, addItemCellInfo.spanX);
903            outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y, addItemCellInfo.spanY);
904            outState.putInt(RUNTIME_STATE_PENDING_ADD_COUNT_X, layout.getCountX());
905            outState.putInt(RUNTIME_STATE_PENDING_ADD_COUNT_Y, layout.getCountY());
906            outState.putBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS,
907                   layout.getOccupiedCells());
908        }
909
910        if (mFolderInfo != null && mWaitingForResult) {
911            outState.putBoolean(RUNTIME_STATE_PENDING_FOLDER_RENAME, true);
912            outState.putLong(RUNTIME_STATE_PENDING_FOLDER_RENAME_ID, mFolderInfo.id);
913        }
914    }
915
916    @Override
917    public void onDestroy() {
918        super.onDestroy();
919
920        try {
921            mAppWidgetHost.stopListening();
922        } catch (NullPointerException ex) {
923            Log.w(TAG, "problem while stopping AppWidgetHost during Launcher destruction", ex);
924        }
925
926        TextKeyListener.getInstance().release();
927
928        mModel.stopLoader();
929
930        unbindDesktopItems();
931        AppInfoCache.unbindDrawables();
932
933        getContentResolver().unregisterContentObserver(mWidgetObserver);
934
935        dismissPreview(mPreviousView);
936        dismissPreview(mNextView);
937
938        unregisterReceiver(mCloseSystemDialogsReceiver);
939    }
940
941    @Override
942    public void startActivityForResult(Intent intent, int requestCode) {
943        if (requestCode >= 0) mWaitingForResult = true;
944        super.startActivityForResult(intent, requestCode);
945    }
946
947    @Override
948    public void startSearch(String initialQuery, boolean selectInitialQuery,
949            Bundle appSearchData, boolean globalSearch) {
950
951        closeAllApps(true);
952
953        // Slide the search widget to the top, if it's on the current screen,
954        // otherwise show the search dialog immediately.
955        Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
956        if (searchWidget == null) {
957            showSearchDialog(initialQuery, selectInitialQuery, appSearchData, globalSearch);
958        } else {
959            searchWidget.startSearch(initialQuery, selectInitialQuery, appSearchData, globalSearch);
960            // show the currently typed text in the search widget while sliding
961            searchWidget.setQuery(getTypedText());
962        }
963    }
964
965    /**
966     * Show the search dialog immediately, without changing the search widget.
967     *
968     * @see Activity#startSearch(String, boolean, android.os.Bundle, boolean)
969     */
970    void showSearchDialog(String initialQuery, boolean selectInitialQuery,
971            Bundle appSearchData, boolean globalSearch) {
972
973        if (initialQuery == null) {
974            // Use any text typed in the launcher as the initial query
975            initialQuery = getTypedText();
976            clearTypedText();
977        }
978        if (appSearchData == null) {
979            appSearchData = new Bundle();
980            appSearchData.putString(SearchManager.SOURCE, "launcher-search");
981        }
982
983        final SearchManager searchManager =
984                (SearchManager) getSystemService(Context.SEARCH_SERVICE);
985
986        final Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
987        if (searchWidget != null) {
988            // This gets called when the user leaves the search dialog to go back to
989            // the Launcher.
990            searchManager.setOnCancelListener(new SearchManager.OnCancelListener() {
991                public void onCancel() {
992                    searchManager.setOnCancelListener(null);
993                    stopSearch();
994                }
995            });
996        }
997
998        searchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(),
999            appSearchData, globalSearch);
1000    }
1001
1002    /**
1003     * Cancel search dialog if it is open.
1004     */
1005    void stopSearch() {
1006        // Close search dialog
1007        SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
1008        searchManager.stopSearch();
1009        // Restore search widget to its normal position
1010        Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
1011        if (searchWidget != null) {
1012            searchWidget.stopSearch(false);
1013        }
1014    }
1015
1016    @Override
1017    public boolean onCreateOptionsMenu(Menu menu) {
1018        if (isWorkspaceLocked()) {
1019            return false;
1020        }
1021
1022        super.onCreateOptionsMenu(menu);
1023        menu.add(MENU_GROUP_ADD, MENU_ADD, 0, R.string.menu_add)
1024                .setIcon(android.R.drawable.ic_menu_add)
1025                .setAlphabeticShortcut('A');
1026        menu.add(0, MENU_WALLPAPER_SETTINGS, 0, R.string.menu_wallpaper)
1027                 .setIcon(android.R.drawable.ic_menu_gallery)
1028                 .setAlphabeticShortcut('W');
1029        menu.add(0, MENU_SEARCH, 0, R.string.menu_search)
1030                .setIcon(android.R.drawable.ic_search_category_default)
1031                .setAlphabeticShortcut(SearchManager.MENU_KEY);
1032        menu.add(0, MENU_NOTIFICATIONS, 0, R.string.menu_notifications)
1033                .setIcon(com.android.internal.R.drawable.ic_menu_notifications)
1034                .setAlphabeticShortcut('N');
1035
1036        final Intent settings = new Intent(android.provider.Settings.ACTION_SETTINGS);
1037        settings.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
1038                Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
1039
1040        menu.add(0, MENU_SETTINGS, 0, R.string.menu_settings)
1041                .setIcon(android.R.drawable.ic_menu_preferences).setAlphabeticShortcut('P')
1042                .setIntent(settings);
1043
1044        return true;
1045    }
1046
1047    @Override
1048    public boolean onPrepareOptionsMenu(Menu menu) {
1049        super.onPrepareOptionsMenu(menu);
1050
1051        mMenuAddInfo = mWorkspace.findAllVacantCells(null);
1052        menu.setGroupEnabled(MENU_GROUP_ADD, mMenuAddInfo != null && mMenuAddInfo.valid);
1053
1054        return true;
1055    }
1056
1057    @Override
1058    public boolean onOptionsItemSelected(MenuItem item) {
1059        switch (item.getItemId()) {
1060            case MENU_ADD:
1061                addItems();
1062                return true;
1063            case MENU_WALLPAPER_SETTINGS:
1064                startWallpaper();
1065                return true;
1066            case MENU_SEARCH:
1067                onSearchRequested();
1068                return true;
1069            case MENU_NOTIFICATIONS:
1070                showNotifications();
1071                return true;
1072        }
1073
1074        return super.onOptionsItemSelected(item);
1075    }
1076
1077    /**
1078     * Indicates that we want global search for this activity by setting the globalSearch
1079     * argument for {@link #startSearch} to true.
1080     */
1081
1082    @Override
1083    public boolean onSearchRequested() {
1084        startSearch(null, false, null, true);
1085        return true;
1086    }
1087
1088    public boolean isWorkspaceLocked() {
1089        return mWorkspaceLoading || mWaitingForResult;
1090    }
1091
1092    private void addItems() {
1093        closeAllApps(true);
1094        showAddDialog(mMenuAddInfo);
1095    }
1096
1097    void addAppWidget(Intent data) {
1098        // TODO: catch bad widget exception when sent
1099        int appWidgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
1100
1101        String customWidget = data.getStringExtra(EXTRA_CUSTOM_WIDGET);
1102        if (SEARCH_WIDGET.equals(customWidget)) {
1103            // We don't need this any more, since this isn't a real app widget.
1104            mAppWidgetHost.deleteAppWidgetId(appWidgetId);
1105            // add the search widget
1106            addSearch();
1107        } else {
1108            AppWidgetProviderInfo appWidget = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
1109
1110            if (appWidget.configure != null) {
1111                // Launch over to configure widget, if needed
1112                Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_CONFIGURE);
1113                intent.setComponent(appWidget.configure);
1114                intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
1115
1116                startActivityForResult(intent, REQUEST_CREATE_APPWIDGET);
1117            } else {
1118                // Otherwise just add it
1119                onActivityResult(REQUEST_CREATE_APPWIDGET, Activity.RESULT_OK, data);
1120            }
1121        }
1122    }
1123
1124    void addSearch() {
1125        final Widget info = Widget.makeSearch();
1126        final CellLayout.CellInfo cellInfo = mAddItemCellInfo;
1127
1128        final int[] xy = mCellCoordinates;
1129        final int spanX = info.spanX;
1130        final int spanY = info.spanY;
1131
1132        if (!findSlot(cellInfo, xy, spanX, spanY)) return;
1133
1134        LauncherModel.addItemToDatabase(this, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
1135        mWorkspace.getCurrentScreen(), xy[0], xy[1], false);
1136
1137        final View view = mInflater.inflate(info.layoutResource, null);
1138        view.setTag(info);
1139        Search search = (Search) view.findViewById(R.id.widget_search);
1140        search.setLauncher(this);
1141
1142        mWorkspace.addInCurrentScreen(view, xy[0], xy[1], info.spanX, spanY);
1143    }
1144
1145    void processShortcut(Intent intent, int requestCodeApplication, int requestCodeShortcut) {
1146        // Handle case where user selected "Applications"
1147        String applicationName = getResources().getString(R.string.group_applications);
1148        String shortcutName = intent.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
1149
1150        if (applicationName != null && applicationName.equals(shortcutName)) {
1151            Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
1152            mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
1153
1154            Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1155            pickIntent.putExtra(Intent.EXTRA_INTENT, mainIntent);
1156            startActivityForResult(pickIntent, requestCodeApplication);
1157        } else {
1158            startActivityForResult(intent, requestCodeShortcut);
1159        }
1160    }
1161
1162    void addLiveFolder(Intent intent) {
1163        // Handle case where user selected "Folder"
1164        String folderName = getResources().getString(R.string.group_folder);
1165        String shortcutName = intent.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
1166
1167        if (folderName != null && folderName.equals(shortcutName)) {
1168            addFolder();
1169        } else {
1170            startActivityForResult(intent, REQUEST_CREATE_LIVE_FOLDER);
1171        }
1172    }
1173
1174    void addFolder() {
1175        UserFolderInfo folderInfo = new UserFolderInfo();
1176        folderInfo.title = getText(R.string.folder_name);
1177
1178        CellLayout.CellInfo cellInfo = mAddItemCellInfo;
1179        cellInfo.screen = mWorkspace.getCurrentScreen();
1180        if (!findSingleSlot(cellInfo)) return;
1181
1182        // Update the model
1183        LauncherModel.addItemToDatabase(this, folderInfo,
1184                LauncherSettings.Favorites.CONTAINER_DESKTOP,
1185                mWorkspace.getCurrentScreen(), cellInfo.cellX, cellInfo.cellY, false);
1186        mFolders.put(folderInfo.id, folderInfo);
1187
1188        // Create the view
1189        FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon, this,
1190                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), folderInfo);
1191        mWorkspace.addInCurrentScreen(newFolder,
1192                cellInfo.cellX, cellInfo.cellY, 1, 1, isWorkspaceLocked());
1193    }
1194
1195    void removeFolder(FolderInfo folder) {
1196        mFolders.remove(folder.id);
1197    }
1198
1199    private void completeAddLiveFolder(Intent data, CellLayout.CellInfo cellInfo) {
1200        cellInfo.screen = mWorkspace.getCurrentScreen();
1201        if (!findSingleSlot(cellInfo)) return;
1202
1203        final LiveFolderInfo info = addLiveFolder(this, data, cellInfo, false);
1204
1205        if (!mRestoring) {
1206            final View view = LiveFolderIcon.fromXml(R.layout.live_folder_icon, this,
1207                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), info);
1208            mWorkspace.addInCurrentScreen(view, cellInfo.cellX, cellInfo.cellY, 1, 1,
1209                    isWorkspaceLocked());
1210        }
1211    }
1212
1213    static LiveFolderInfo addLiveFolder(Context context, Intent data,
1214            CellLayout.CellInfo cellInfo, boolean notify) {
1215
1216        Intent baseIntent = data.getParcelableExtra(LiveFolders.EXTRA_LIVE_FOLDER_BASE_INTENT);
1217        String name = data.getStringExtra(LiveFolders.EXTRA_LIVE_FOLDER_NAME);
1218
1219        Drawable icon = null;
1220        boolean filtered = false;
1221        Intent.ShortcutIconResource iconResource = null;
1222
1223        Parcelable extra = data.getParcelableExtra(LiveFolders.EXTRA_LIVE_FOLDER_ICON);
1224        if (extra != null && extra instanceof Intent.ShortcutIconResource) {
1225            try {
1226                iconResource = (Intent.ShortcutIconResource) extra;
1227                final PackageManager packageManager = context.getPackageManager();
1228                Resources resources = packageManager.getResourcesForApplication(
1229                        iconResource.packageName);
1230                final int id = resources.getIdentifier(iconResource.resourceName, null, null);
1231                icon = resources.getDrawable(id);
1232            } catch (Exception e) {
1233                Log.w(TAG, "Could not load live folder icon: " + extra);
1234            }
1235        }
1236
1237        if (icon == null) {
1238            icon = context.getResources().getDrawable(R.drawable.ic_launcher_folder);
1239        }
1240
1241        final LiveFolderInfo info = new LiveFolderInfo();
1242        info.icon = icon;
1243        info.filtered = filtered;
1244        info.title = name;
1245        info.iconResource = iconResource;
1246        info.uri = data.getData();
1247        info.baseIntent = baseIntent;
1248        info.displayMode = data.getIntExtra(LiveFolders.EXTRA_LIVE_FOLDER_DISPLAY_MODE,
1249                LiveFolders.DISPLAY_MODE_GRID);
1250
1251        LauncherModel.addItemToDatabase(context, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
1252                cellInfo.screen, cellInfo.cellX, cellInfo.cellY, notify);
1253        mFolders.put(info.id, info);
1254
1255        return info;
1256    }
1257
1258    private boolean findSingleSlot(CellLayout.CellInfo cellInfo) {
1259        final int[] xy = new int[2];
1260        if (findSlot(cellInfo, xy, 1, 1)) {
1261            cellInfo.cellX = xy[0];
1262            cellInfo.cellY = xy[1];
1263            return true;
1264        }
1265        return false;
1266    }
1267
1268    private boolean findSlot(CellLayout.CellInfo cellInfo, int[] xy, int spanX, int spanY) {
1269        if (!cellInfo.findCellForSpan(xy, spanX, spanY)) {
1270            boolean[] occupied = mSavedState != null ?
1271                    mSavedState.getBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS) : null;
1272            cellInfo = mWorkspace.findAllVacantCells(occupied);
1273            if (!cellInfo.findCellForSpan(xy, spanX, spanY)) {
1274                Toast.makeText(this, getString(R.string.out_of_space), Toast.LENGTH_SHORT).show();
1275                return false;
1276            }
1277        }
1278        return true;
1279    }
1280
1281    private void showNotifications() {
1282        final StatusBarManager statusBar = (StatusBarManager) getSystemService(STATUS_BAR_SERVICE);
1283        if (statusBar != null) {
1284            statusBar.expand();
1285        }
1286    }
1287
1288    private void startWallpaper() {
1289        closeAllApps(true);
1290        final Intent pickWallpaper = new Intent(Intent.ACTION_SET_WALLPAPER);
1291        Intent chooser = Intent.createChooser(pickWallpaper,
1292                getText(R.string.chooser_wallpaper));
1293        // NOTE: Adds a configure option to the chooser if the wallpaper supports it
1294        //       Removed in Eclair MR1
1295//        WallpaperManager wm = (WallpaperManager)
1296//                getSystemService(Context.WALLPAPER_SERVICE);
1297//        WallpaperInfo wi = wm.getWallpaperInfo();
1298//        if (wi != null && wi.getSettingsActivity() != null) {
1299//            LabeledIntent li = new LabeledIntent(getPackageName(),
1300//                    R.string.configure_wallpaper, 0);
1301//            li.setClassName(wi.getPackageName(), wi.getSettingsActivity());
1302//            chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Intent[] { li });
1303//        }
1304        startActivityForResult(chooser, REQUEST_PICK_WALLPAPER);
1305    }
1306
1307    /**
1308     * Registers various content observers. The current implementation registers
1309     * only a favorites observer to keep track of the favorites applications.
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_HOME:
1322                    return true;
1323                case KeyEvent.KEYCODE_VOLUME_DOWN:
1324                    if (SystemProperties.getInt("debug.launcher2.dumpstate", 0) != 0) {
1325                        dumpState();
1326                        return true;
1327                    }
1328                    break;
1329            }
1330        } else if (event.getAction() == KeyEvent.ACTION_UP) {
1331            switch (event.getKeyCode()) {
1332                case KeyEvent.KEYCODE_HOME:
1333                    return true;
1334            }
1335        }
1336
1337        return super.dispatchKeyEvent(event);
1338    }
1339
1340    @Override
1341    public void onBackPressed() {
1342        if (isAllAppsVisible()) {
1343            closeAllApps(true);
1344        } else {
1345            closeFolder();
1346        }
1347        dismissPreview(mPreviousView);
1348        dismissPreview(mNextView);
1349    }
1350
1351    private void closeFolder() {
1352        Folder folder = mWorkspace.getOpenFolder();
1353        if (folder != null) {
1354            closeFolder(folder);
1355        }
1356    }
1357
1358    void closeFolder(Folder folder) {
1359        folder.getInfo().opened = false;
1360        ViewGroup parent = (ViewGroup) folder.getParent();
1361        if (parent != null) {
1362            parent.removeView(folder);
1363            if (folder instanceof DropTarget) {
1364                // Live folders aren't DropTargets.
1365                mDragController.removeDropTarget((DropTarget)folder);
1366            }
1367        }
1368        folder.onClose();
1369    }
1370
1371    /**
1372     * Re-listen when widgets are reset.
1373     */
1374    private void onAppWidgetReset() {
1375        mAppWidgetHost.startListening();
1376    }
1377
1378    /**
1379     * Go through the and disconnect any of the callbacks in the drawables and the views or we
1380     * leak the previous Home screen on orientation change.
1381     */
1382    private void unbindDesktopItems() {
1383        for (ItemInfo item: mDesktopItems) {
1384            item.unbind();
1385        }
1386    }
1387
1388    /**
1389     * Launches the intent referred by the clicked shortcut.
1390     *
1391     * @param v The view representing the clicked shortcut.
1392     */
1393    public void onClick(View v) {
1394        Object tag = v.getTag();
1395        if (tag instanceof ApplicationInfo) {
1396            // Open shortcut
1397            final Intent intent = ((ApplicationInfo) tag).intent;
1398            startActivitySafely(intent);
1399        } else if (tag instanceof FolderInfo) {
1400            handleFolderClick((FolderInfo) tag);
1401        } else if (v == mHandleView) {
1402            if (isAllAppsVisible()) {
1403                closeAllApps(true);
1404            } else {
1405                showAllApps(true);
1406            }
1407        }
1408    }
1409
1410    void startActivitySafely(Intent intent) {
1411        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
1412        try {
1413            startActivity(intent);
1414        } catch (ActivityNotFoundException e) {
1415            Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
1416        } catch (SecurityException e) {
1417            Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
1418            Log.e(TAG, "Launcher does not have the permission to launch " + intent +
1419                    ". Make sure to create a MAIN intent-filter for the corresponding activity " +
1420                    "or use the exported attribute for this activity.", e);
1421        }
1422    }
1423
1424    private void handleFolderClick(FolderInfo folderInfo) {
1425        if (!folderInfo.opened) {
1426            // Close any open folder
1427            closeFolder();
1428            // Open the requested folder
1429            openFolder(folderInfo);
1430        } else {
1431            // Find the open folder...
1432            Folder openFolder = mWorkspace.getFolderForTag(folderInfo);
1433            int folderScreen;
1434            if (openFolder != null) {
1435                folderScreen = mWorkspace.getScreenForView(openFolder);
1436                // .. and close it
1437                closeFolder(openFolder);
1438                if (folderScreen != mWorkspace.getCurrentScreen()) {
1439                    // Close any folder open on the current screen
1440                    closeFolder();
1441                    // Pull the folder onto this screen
1442                    openFolder(folderInfo);
1443                }
1444            }
1445        }
1446    }
1447
1448    /**
1449     * Opens the user fodler described by the specified tag. The opening of the folder
1450     * is animated relative to the specified View. If the View is null, no animation
1451     * is played.
1452     *
1453     * @param folderInfo The FolderInfo describing the folder to open.
1454     */
1455    private void openFolder(FolderInfo folderInfo) {
1456        Folder openFolder;
1457
1458        if (folderInfo instanceof UserFolderInfo) {
1459            openFolder = UserFolder.fromXml(this);
1460        } else if (folderInfo instanceof LiveFolderInfo) {
1461            openFolder = com.android.launcher2.LiveFolder.fromXml(this, folderInfo);
1462        } else {
1463            return;
1464        }
1465
1466        openFolder.setDragController(mDragController);
1467        openFolder.setLauncher(this);
1468
1469        openFolder.bind(folderInfo);
1470        folderInfo.opened = true;
1471
1472        mWorkspace.addInScreen(openFolder, folderInfo.screen, 0, 0, 4, 4);
1473        openFolder.onOpen();
1474    }
1475
1476    public boolean onLongClick(View v) {
1477        switch (v.getId()) {
1478            case R.id.previous_screen:
1479                if (!isAllAppsVisible()) {
1480                    mWorkspace.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS,
1481                            HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
1482                    showPreviousPreview(v);
1483                }
1484                return true;
1485            case R.id.next_screen:
1486                if (!isAllAppsVisible()) {
1487                    mWorkspace.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS,
1488                            HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
1489                    showNextPreview(v);
1490                }
1491                return true;
1492        }
1493
1494        if (isWorkspaceLocked()) {
1495            return false;
1496        }
1497
1498        if (!(v instanceof CellLayout)) {
1499            v = (View) v.getParent();
1500        }
1501
1502        CellLayout.CellInfo cellInfo = (CellLayout.CellInfo) v.getTag();
1503
1504        // This happens when long clicking an item with the dpad/trackball
1505        if (cellInfo == null) {
1506            return true;
1507        }
1508
1509        if (mWorkspace.allowLongPress()) {
1510            if (cellInfo.cell == null) {
1511                if (cellInfo.valid) {
1512                    // User long pressed on empty space
1513                    mWorkspace.setAllowLongPress(false);
1514                    showAddDialog(cellInfo);
1515                }
1516            } else {
1517                if (!(cellInfo.cell instanceof Folder)) {
1518                    // User long pressed on an item
1519                    mWorkspace.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS,
1520                            HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
1521                    mWorkspace.startDrag(cellInfo);
1522                }
1523            }
1524        }
1525        return true;
1526    }
1527
1528    @SuppressWarnings({"unchecked"})
1529    private void dismissPreview(final View v) {
1530        final PopupWindow window = (PopupWindow) v.getTag();
1531        if (window != null) {
1532            window.setOnDismissListener(new PopupWindow.OnDismissListener() {
1533                public void onDismiss() {
1534                    ViewGroup group = (ViewGroup) v.getTag(R.id.workspace);
1535                    int count = group.getChildCount();
1536                    for (int i = 0; i < count; i++) {
1537                        ((ImageView) group.getChildAt(i)).setImageDrawable(null);
1538                    }
1539                    ArrayList<Bitmap> bitmaps = (ArrayList<Bitmap>) v.getTag(R.id.icon);
1540                    for (Bitmap bitmap : bitmaps) bitmap.recycle();
1541
1542                    v.setTag(R.id.workspace, null);
1543                    v.setTag(R.id.icon, null);
1544                    window.setOnDismissListener(null);
1545                }
1546            });
1547            window.dismiss();
1548        }
1549        v.setTag(null);
1550    }
1551
1552    private void showPreviousPreview(View anchor) {
1553        int current = mWorkspace.getCurrentScreen();
1554        if (current <= 0) return;
1555
1556        showPreviews(anchor, 0, mWorkspace.getChildCount());
1557    }
1558
1559    private void showNextPreview(View anchor) {
1560        int current = mWorkspace.getCurrentScreen();
1561        if (current >= mWorkspace.getChildCount() - 1) return;
1562
1563        showPreviews(anchor, 0, mWorkspace.getChildCount());
1564    }
1565
1566    private void showPreviews(final View anchor, int start, int end) {
1567        Resources resources = getResources();
1568
1569        Workspace workspace = mWorkspace;
1570        CellLayout cell = ((CellLayout) workspace.getChildAt(start));
1571
1572        float max = workspace.getChildCount();
1573
1574        Rect r = new Rect();
1575        resources.getDrawable(R.drawable.preview_background).getPadding(r);
1576        int extraW = (int) ((r.left + r.right) * max);
1577        int extraH = r.top + r.bottom;
1578
1579        int aW = cell.getWidth() - extraW;
1580        float w = aW / max;
1581
1582        int width = cell.getWidth();
1583        int height = cell.getHeight();
1584        int x = cell.getLeftPadding();
1585        int y = cell.getTopPadding();
1586        width -= (x + cell.getRightPadding());
1587        height -= (y + cell.getBottomPadding());
1588
1589        float scale = w / width;
1590
1591        int count = end - start;
1592
1593        final float sWidth = width * scale;
1594        float sHeight = height * scale;
1595
1596        LinearLayout preview = new LinearLayout(this);
1597
1598        PreviewTouchHandler handler = new PreviewTouchHandler(anchor);
1599        ArrayList<Bitmap> bitmaps = new ArrayList<Bitmap>(count);
1600
1601        for (int i = start; i < end; i++) {
1602            ImageView image = new ImageView(this);
1603            cell = (CellLayout) workspace.getChildAt(i);
1604
1605            Bitmap bitmap = Bitmap.createBitmap((int) sWidth, (int) sHeight,
1606                    Bitmap.Config.ARGB_8888);
1607
1608            Canvas c = new Canvas(bitmap);
1609            c.scale(scale, scale);
1610            c.translate(-cell.getLeftPadding(), -cell.getTopPadding());
1611            cell.dispatchDraw(c);
1612
1613            image.setBackgroundDrawable(resources.getDrawable(R.drawable.preview_background));
1614            image.setImageBitmap(bitmap);
1615            image.setTag(i);
1616            image.setOnClickListener(handler);
1617            image.setOnFocusChangeListener(handler);
1618            image.setFocusable(true);
1619            if (i == mWorkspace.getCurrentScreen()) image.requestFocus();
1620
1621            preview.addView(image,
1622                    LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
1623
1624            bitmaps.add(bitmap);
1625        }
1626
1627        PopupWindow p = new PopupWindow(this);
1628        p.setContentView(preview);
1629        p.setWidth((int) (sWidth * count + extraW));
1630        p.setHeight((int) (sHeight + extraH));
1631        p.setAnimationStyle(R.style.AnimationPreview);
1632        p.setOutsideTouchable(true);
1633        p.setFocusable(true);
1634        p.setBackgroundDrawable(new ColorDrawable(0));
1635        p.showAsDropDown(anchor, 0, 0);
1636
1637        p.setOnDismissListener(new PopupWindow.OnDismissListener() {
1638            public void onDismiss() {
1639                dismissPreview(anchor);
1640            }
1641        });
1642
1643        anchor.setTag(p);
1644        anchor.setTag(R.id.workspace, preview);
1645        anchor.setTag(R.id.icon, bitmaps);
1646    }
1647
1648    class PreviewTouchHandler implements View.OnClickListener, Runnable, View.OnFocusChangeListener {
1649        private final View mAnchor;
1650
1651        public PreviewTouchHandler(View anchor) {
1652            mAnchor = anchor;
1653        }
1654
1655        public void onClick(View v) {
1656            mWorkspace.snapToScreen((Integer) v.getTag());
1657            v.post(this);
1658        }
1659
1660        public void run() {
1661            dismissPreview(mAnchor);
1662        }
1663
1664        public void onFocusChange(View v, boolean hasFocus) {
1665            if (hasFocus) {
1666                mWorkspace.snapToScreen((Integer) v.getTag());
1667            }
1668        }
1669    }
1670
1671    View getDrawerHandle() {
1672        return mHandleView;
1673    }
1674
1675    Workspace getWorkspace() {
1676        return mWorkspace;
1677    }
1678
1679    @Override
1680    protected Dialog onCreateDialog(int id) {
1681        switch (id) {
1682            case DIALOG_CREATE_SHORTCUT:
1683                return new CreateShortcut().createDialog();
1684            case DIALOG_RENAME_FOLDER:
1685                return new RenameFolder().createDialog();
1686        }
1687
1688        return super.onCreateDialog(id);
1689    }
1690
1691    @Override
1692    protected void onPrepareDialog(int id, Dialog dialog) {
1693        switch (id) {
1694            case DIALOG_CREATE_SHORTCUT:
1695                break;
1696            case DIALOG_RENAME_FOLDER:
1697                if (mFolderInfo != null) {
1698                    EditText input = (EditText) dialog.findViewById(R.id.folder_name);
1699                    final CharSequence text = mFolderInfo.title;
1700                    input.setText(text);
1701                    input.setSelection(0, text.length());
1702                }
1703                break;
1704        }
1705    }
1706
1707    void showRenameDialog(FolderInfo info) {
1708        mFolderInfo = info;
1709        mWaitingForResult = true;
1710        showDialog(DIALOG_RENAME_FOLDER);
1711    }
1712
1713    private void showAddDialog(CellLayout.CellInfo cellInfo) {
1714        mAddItemCellInfo = cellInfo;
1715        mWaitingForResult = true;
1716        showDialog(DIALOG_CREATE_SHORTCUT);
1717    }
1718
1719    private void pickShortcut(int requestCode, int title) {
1720        Bundle bundle = new Bundle();
1721
1722        ArrayList<String> shortcutNames = new ArrayList<String>();
1723        shortcutNames.add(getString(R.string.group_applications));
1724        bundle.putStringArrayList(Intent.EXTRA_SHORTCUT_NAME, shortcutNames);
1725
1726        ArrayList<ShortcutIconResource> shortcutIcons = new ArrayList<ShortcutIconResource>();
1727        shortcutIcons.add(ShortcutIconResource.fromContext(Launcher.this,
1728                        R.drawable.ic_launcher_application));
1729        bundle.putParcelableArrayList(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, shortcutIcons);
1730
1731        Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1732        pickIntent.putExtra(Intent.EXTRA_INTENT, new Intent(Intent.ACTION_CREATE_SHORTCUT));
1733        pickIntent.putExtra(Intent.EXTRA_TITLE, getText(title));
1734        pickIntent.putExtras(bundle);
1735
1736        startActivityForResult(pickIntent, requestCode);
1737    }
1738
1739    private class RenameFolder {
1740        private EditText mInput;
1741
1742        Dialog createDialog() {
1743            mWaitingForResult = true;
1744            final View layout = View.inflate(Launcher.this, R.layout.rename_folder, null);
1745            mInput = (EditText) layout.findViewById(R.id.folder_name);
1746
1747            AlertDialog.Builder builder = new AlertDialog.Builder(Launcher.this);
1748            builder.setIcon(0);
1749            builder.setTitle(getString(R.string.rename_folder_title));
1750            builder.setCancelable(true);
1751            builder.setOnCancelListener(new Dialog.OnCancelListener() {
1752                public void onCancel(DialogInterface dialog) {
1753                    cleanup();
1754                }
1755            });
1756            builder.setNegativeButton(getString(R.string.cancel_action),
1757                new Dialog.OnClickListener() {
1758                    public void onClick(DialogInterface dialog, int which) {
1759                        cleanup();
1760                    }
1761                }
1762            );
1763            builder.setPositiveButton(getString(R.string.rename_action),
1764                new Dialog.OnClickListener() {
1765                    public void onClick(DialogInterface dialog, int which) {
1766                        changeFolderName();
1767                    }
1768                }
1769            );
1770            builder.setView(layout);
1771
1772            final AlertDialog dialog = builder.create();
1773            dialog.setOnShowListener(new DialogInterface.OnShowListener() {
1774                public void onShow(DialogInterface dialog) {
1775                    mInput.requestFocus();
1776                    InputMethodManager inputManager = (InputMethodManager)
1777                            getSystemService(Context.INPUT_METHOD_SERVICE);
1778                    inputManager.showSoftInput(mInput, 0);
1779                }
1780            });
1781
1782            return dialog;
1783        }
1784
1785        private void changeFolderName() {
1786            final String name = mInput.getText().toString();
1787            if (!TextUtils.isEmpty(name)) {
1788                // Make sure we have the right folder info
1789                mFolderInfo = mFolders.get(mFolderInfo.id);
1790                mFolderInfo.title = name;
1791                LauncherModel.updateItemInDatabase(Launcher.this, mFolderInfo);
1792
1793                if (mWorkspaceLoading) {
1794                    lockAllApps();
1795                    mModel.setWorkspaceDirty();
1796                    mModel.startLoader(Launcher.this, false);
1797                } else {
1798                    final FolderIcon folderIcon = (FolderIcon)
1799                            mWorkspace.getViewForTag(mFolderInfo);
1800                    if (folderIcon != null) {
1801                        folderIcon.setText(name);
1802                        getWorkspace().requestLayout();
1803                    } else {
1804                        lockAllApps();
1805                        mModel.setWorkspaceDirty();
1806                        mWorkspaceLoading = true;
1807                        mModel.startLoader(Launcher.this, false);
1808                    }
1809                }
1810            }
1811            cleanup();
1812        }
1813
1814        private void cleanup() {
1815            dismissDialog(DIALOG_RENAME_FOLDER);
1816            mWaitingForResult = false;
1817            mFolderInfo = null;
1818        }
1819    }
1820
1821    boolean isAllAppsVisible() {
1822        return mAllAppsGrid.isVisible();
1823    }
1824
1825    boolean isAllAppsOpaque() {
1826        return mAllAppsGrid.isOpaque();
1827    }
1828
1829    void showAllApps(boolean animated) {
1830        mAllAppsGrid.zoom(1.0f, animated);
1831        //mWorkspace.hide();
1832
1833        mWorkspace.startFading(false);
1834
1835        mAllAppsGrid.setFocusable(true);
1836        mAllAppsGrid.requestFocus();
1837
1838        // TODO: fade these two too
1839        mDeleteZone.setVisibility(View.GONE);
1840        //mHandleView.setVisibility(View.GONE);
1841    }
1842
1843    /**
1844     * Things to test when changing this code:
1845     *   - Home from workspace
1846     *          - from center screen
1847     *          - from other screens
1848     *   - Home from all apps
1849     *   - Back from all apps
1850     *   - Launch app from workspace and quit
1851     *          - with back
1852     *          - with home
1853     *   - Launch app from all apps and quit
1854     *          - with back
1855     *          - with home
1856     *   - On workspace, long press power and go back
1857     *          - with back
1858     *          - with home
1859     *   - On all apps, long press power and go back
1860     *          - with back
1861     *          - with home
1862     *   - On workspace, power off
1863     *   - On all apps, power off
1864     */
1865    void closeAllApps(boolean animated) {
1866        if (mAllAppsGrid.isVisible()) {
1867            mAllAppsGrid.zoom(0.0f, animated);
1868            mAllAppsGrid.setFocusable(false);
1869            mWorkspace.getChildAt(mWorkspace.getCurrentScreen()).requestFocus();
1870            mWorkspace.startFading(true);
1871
1872            // TODO: fade these two too
1873            /*
1874            mDeleteZone.setVisibility(View.VISIBLE);
1875            mHandleView.setVisibility(View.VISIBLE);
1876            */
1877        }
1878    }
1879
1880    void lockAllApps() {
1881        // TODO
1882    }
1883
1884    void unlockAllApps() {
1885        // TODO
1886    }
1887
1888    /**
1889     * Displays the shortcut creation dialog and launches, if necessary, the
1890     * appropriate activity.
1891     */
1892    private class CreateShortcut implements DialogInterface.OnClickListener,
1893            DialogInterface.OnCancelListener, DialogInterface.OnDismissListener,
1894            DialogInterface.OnShowListener {
1895
1896        private AddAdapter mAdapter;
1897
1898        Dialog createDialog() {
1899            mWaitingForResult = true;
1900
1901            mAdapter = new AddAdapter(Launcher.this);
1902
1903            final AlertDialog.Builder builder = new AlertDialog.Builder(Launcher.this);
1904            builder.setTitle(getString(R.string.menu_item_add_item));
1905            builder.setAdapter(mAdapter, this);
1906
1907            builder.setInverseBackgroundForced(true);
1908
1909            AlertDialog dialog = builder.create();
1910            dialog.setOnCancelListener(this);
1911            dialog.setOnDismissListener(this);
1912            dialog.setOnShowListener(this);
1913
1914            return dialog;
1915        }
1916
1917        public void onCancel(DialogInterface dialog) {
1918            mWaitingForResult = false;
1919            cleanup();
1920        }
1921
1922        public void onDismiss(DialogInterface dialog) {
1923        }
1924
1925        private void cleanup() {
1926            try {
1927                dismissDialog(DIALOG_CREATE_SHORTCUT);
1928            } catch (Exception e) {
1929                // An exception is thrown if the dialog is not visible, which is fine
1930            }
1931        }
1932
1933        /**
1934         * Handle the action clicked in the "Add to home" dialog.
1935         */
1936        public void onClick(DialogInterface dialog, int which) {
1937            Resources res = getResources();
1938            cleanup();
1939
1940            switch (which) {
1941                case AddAdapter.ITEM_SHORTCUT: {
1942                    // Insert extra item to handle picking application
1943                    pickShortcut(REQUEST_PICK_SHORTCUT, R.string.title_select_shortcut);
1944                    break;
1945                }
1946
1947                case AddAdapter.ITEM_APPWIDGET: {
1948                    int appWidgetId = Launcher.this.mAppWidgetHost.allocateAppWidgetId();
1949
1950                    Intent pickIntent = new Intent(AppWidgetManager.ACTION_APPWIDGET_PICK);
1951                    pickIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
1952                    // add the search widget
1953                    ArrayList<AppWidgetProviderInfo> customInfo =
1954                            new ArrayList<AppWidgetProviderInfo>();
1955                    AppWidgetProviderInfo info = new AppWidgetProviderInfo();
1956                    info.provider = new ComponentName(getPackageName(), "XXX.YYY");
1957                    info.label = getString(R.string.group_search);
1958                    info.icon = R.drawable.ic_search_widget;
1959                    customInfo.add(info);
1960                    pickIntent.putParcelableArrayListExtra(
1961                            AppWidgetManager.EXTRA_CUSTOM_INFO, customInfo);
1962                    ArrayList<Bundle> customExtras = new ArrayList<Bundle>();
1963                    Bundle b = new Bundle();
1964                    b.putString(EXTRA_CUSTOM_WIDGET, SEARCH_WIDGET);
1965                    customExtras.add(b);
1966                    pickIntent.putParcelableArrayListExtra(
1967                            AppWidgetManager.EXTRA_CUSTOM_EXTRAS, customExtras);
1968                    // start the pick activity
1969                    startActivityForResult(pickIntent, REQUEST_PICK_APPWIDGET);
1970                    break;
1971                }
1972
1973                case AddAdapter.ITEM_LIVE_FOLDER: {
1974                    // Insert extra item to handle inserting folder
1975                    Bundle bundle = new Bundle();
1976
1977                    ArrayList<String> shortcutNames = new ArrayList<String>();
1978                    shortcutNames.add(res.getString(R.string.group_folder));
1979                    bundle.putStringArrayList(Intent.EXTRA_SHORTCUT_NAME, shortcutNames);
1980
1981                    ArrayList<ShortcutIconResource> shortcutIcons =
1982                            new ArrayList<ShortcutIconResource>();
1983                    shortcutIcons.add(ShortcutIconResource.fromContext(Launcher.this,
1984                            R.drawable.ic_launcher_folder));
1985                    bundle.putParcelableArrayList(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, shortcutIcons);
1986
1987                    Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1988                    pickIntent.putExtra(Intent.EXTRA_INTENT,
1989                            new Intent(LiveFolders.ACTION_CREATE_LIVE_FOLDER));
1990                    pickIntent.putExtra(Intent.EXTRA_TITLE,
1991                            getText(R.string.title_select_live_folder));
1992                    pickIntent.putExtras(bundle);
1993
1994                    startActivityForResult(pickIntent, REQUEST_PICK_LIVE_FOLDER);
1995                    break;
1996                }
1997
1998                case AddAdapter.ITEM_WALLPAPER: {
1999                    startWallpaper();
2000                    break;
2001                }
2002            }
2003        }
2004
2005        public void onShow(DialogInterface dialog) {
2006        }
2007    }
2008
2009    /**
2010     * Receives notifications when applications are added/removed.
2011     */
2012    private class CloseSystemDialogsIntentReceiver extends BroadcastReceiver {
2013        @Override
2014        public void onReceive(Context context, Intent intent) {
2015            closeSystemDialogs();
2016            String reason = intent.getStringExtra("reason");
2017            if (!"homekey".equals(reason)) {
2018                boolean animate = true;
2019                /*
2020                if ("globalactions".equals(reason)) {
2021                    // For some reason (probably the fading), this animation is
2022                    // choppy, so don't show it.
2023                    animate = false;
2024                }
2025                */
2026                closeAllApps(animate);
2027            }
2028        }
2029    }
2030
2031    /**
2032     * Receives notifications whenever the appwidgets are reset.
2033     */
2034    private class AppWidgetResetObserver extends ContentObserver {
2035        public AppWidgetResetObserver() {
2036            super(new Handler());
2037        }
2038
2039        @Override
2040        public void onChange(boolean selfChange) {
2041            onAppWidgetReset();
2042        }
2043    }
2044
2045    /**
2046     * Implementation of the method from LauncherModel.Callbacks.
2047     */
2048    public int getCurrentWorkspaceScreen() {
2049        return mWorkspace.getCurrentScreen();
2050    }
2051
2052    /**
2053     * Refreshes the shortcuts shown on the workspace.
2054     *
2055     * Implementation of the method from LauncherModel.Callbacks.
2056     */
2057    public void startBinding() {
2058        final Workspace workspace = mWorkspace;
2059        int count = workspace.getChildCount();
2060        for (int i = 0; i < count; i++) {
2061            // Use removeAllViewsInLayout() to avoid an extra requestLayout() and invalidate().
2062            ((ViewGroup) workspace.getChildAt(i)).removeAllViewsInLayout();
2063        }
2064
2065        if (DEBUG_USER_INTERFACE) {
2066            android.widget.Button finishButton = new android.widget.Button(this);
2067            finishButton.setText("Finish");
2068            workspace.addInScreen(finishButton, 1, 0, 0, 1, 1);
2069
2070            finishButton.setOnClickListener(new android.widget.Button.OnClickListener() {
2071                public void onClick(View v) {
2072                    finish();
2073                }
2074            });
2075        }
2076    }
2077
2078    /**
2079     * Bind the items start-end from the list.
2080     *
2081     * Implementation of the method from LauncherModel.Callbacks.
2082     */
2083    public void bindItems(ArrayList<ItemInfo> shortcuts, int start, int end) {
2084
2085        final Workspace workspace = mWorkspace;
2086
2087        for (int i=start; i<end; i++) {
2088            final ItemInfo item = shortcuts.get(i);
2089            mDesktopItems.add(item);
2090            switch (item.itemType) {
2091                case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION:
2092                case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
2093                    final View shortcut = createShortcut((ApplicationInfo) item);
2094                    workspace.addInScreen(shortcut, item.screen, item.cellX, item.cellY, 1, 1,
2095                            false);
2096                    break;
2097                case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER:
2098                    final FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon, this,
2099                            (ViewGroup) workspace.getChildAt(workspace.getCurrentScreen()),
2100                            (UserFolderInfo) item);
2101                    workspace.addInScreen(newFolder, item.screen, item.cellX, item.cellY, 1, 1,
2102                            false);
2103                    break;
2104                case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER:
2105                    final FolderIcon newLiveFolder = LiveFolderIcon.fromXml(
2106                            R.layout.live_folder_icon, this,
2107                            (ViewGroup) workspace.getChildAt(workspace.getCurrentScreen()),
2108                            (LiveFolderInfo) item);
2109                    workspace.addInScreen(newLiveFolder, item.screen, item.cellX, item.cellY, 1, 1,
2110                            false);
2111                    break;
2112                case LauncherSettings.Favorites.ITEM_TYPE_WIDGET_SEARCH:
2113                    final int screen = workspace.getCurrentScreen();
2114                    final View view = mInflater.inflate(R.layout.widget_search,
2115                            (ViewGroup) workspace.getChildAt(screen), false);
2116
2117                    Search search = (Search) view.findViewById(R.id.widget_search);
2118                    search.setLauncher(this);
2119
2120                    final Widget widget = (Widget) item;
2121                    view.setTag(widget);
2122
2123                    workspace.addWidget(view, widget, false);
2124                    break;
2125            }
2126        }
2127
2128        workspace.requestLayout();
2129    }
2130
2131    /**
2132     * Implementation of the method from LauncherModel.Callbacks.
2133     */
2134    public void bindFolders(HashMap<Long, FolderInfo> folders) {
2135        mFolders.clear();
2136        mFolders.putAll(folders);
2137    }
2138
2139    /**
2140     * Add the views for a widget to the workspace.
2141     *
2142     * Implementation of the method from LauncherModel.Callbacks.
2143     */
2144    public void bindAppWidget(LauncherAppWidgetInfo item) {
2145        final Workspace workspace = mWorkspace;
2146
2147        final int appWidgetId = item.appWidgetId;
2148        final AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
2149        item.hostView = mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
2150
2151        item.hostView.setAppWidget(appWidgetId, appWidgetInfo);
2152        item.hostView.setTag(item);
2153
2154        workspace.addInScreen(item.hostView, item.screen, item.cellX,
2155                item.cellY, item.spanX, item.spanY, false);
2156
2157        workspace.requestLayout();
2158
2159        mDesktopItems.add(item);
2160    }
2161
2162    /**
2163     * Callback saying that there aren't any more items to bind.
2164     *
2165     * Implementation of the method from LauncherModel.Callbacks.
2166     */
2167    public void finishBindingItems() {
2168        if (mSavedState != null) {
2169            if (!mWorkspace.hasFocus()) {
2170                mWorkspace.getChildAt(mWorkspace.getCurrentScreen()).requestFocus();
2171            }
2172
2173            final long[] userFolders = mSavedState.getLongArray(RUNTIME_STATE_USER_FOLDERS);
2174            if (userFolders != null) {
2175                for (long folderId : userFolders) {
2176                    final FolderInfo info = mFolders.get(folderId);
2177                    if (info != null) {
2178                        openFolder(info);
2179                    }
2180                }
2181                final Folder openFolder = mWorkspace.getOpenFolder();
2182                if (openFolder != null) {
2183                    openFolder.requestFocus();
2184                }
2185            }
2186
2187            mSavedState = null;
2188        }
2189
2190        if (mSavedInstanceState != null) {
2191            super.onRestoreInstanceState(mSavedInstanceState);
2192            mSavedInstanceState = null;
2193        }
2194
2195        mWorkspaceLoading = false;
2196    }
2197
2198    /**
2199     * Add the icons for all apps.
2200     *
2201     * Implementation of the method from LauncherModel.Callbacks.
2202     */
2203    public void bindAllApplications(ArrayList<ApplicationInfo> apps) {
2204        mAllAppsGrid.setApps(apps);
2205    }
2206
2207    /**
2208     * A package was installed.
2209     *
2210     * Implementation of the method from LauncherModel.Callbacks.
2211     */
2212    public void bindPackageAdded(ArrayList<ApplicationInfo> apps) {
2213        removeDialog(DIALOG_CREATE_SHORTCUT);
2214        mAllAppsGrid.addApps(apps);
2215    }
2216
2217    /**
2218     * A package was updated.
2219     *
2220     * Implementation of the method from LauncherModel.Callbacks.
2221     */
2222    public void bindPackageUpdated(String packageName, ArrayList<ApplicationInfo> apps) {
2223        removeDialog(DIALOG_CREATE_SHORTCUT);
2224        mWorkspace.updateShortcutsForPackage(packageName);
2225        mAllAppsGrid.updateApps(packageName, apps);
2226    }
2227
2228    /**
2229     * A package was uninstalled.
2230     *
2231     * Implementation of the method from LauncherModel.Callbacks.
2232     */
2233    public void bindPackageRemoved(String packageName, ArrayList<ApplicationInfo> apps) {
2234        removeDialog(DIALOG_CREATE_SHORTCUT);
2235        mWorkspace.removeShortcutsForPackage(packageName);
2236        mAllAppsGrid.removeApps(apps);
2237    }
2238
2239    /**
2240     * Prints out out state for debugging.
2241     */
2242    public void dumpState() {
2243        Log.d(TAG, "BEGIN launcher2 dump state for launcher " + this);
2244        Log.d(TAG, "mSavedState=" + mSavedState);
2245        Log.d(TAG, "mIsNewIntent=" + mIsNewIntent);
2246        Log.d(TAG, "mWorkspaceLoading=" + mWorkspaceLoading);
2247        Log.d(TAG, "mRestoring=" + mRestoring);
2248        Log.d(TAG, "mWaitingForResult=" + mWaitingForResult);
2249        Log.d(TAG, "mSavedInstanceState=" + mSavedInstanceState);
2250        Log.d(TAG, "mDesktopItems.size=" + mDesktopItems.size());
2251        Log.d(TAG, "mFolders.size=" + mFolders.size());
2252        mModel.dumpState();
2253        mAllAppsGrid.dumpState();
2254        Log.d(TAG, "END launcher2 dump state");
2255    }
2256}
2257