Launcher.java revision 14f122bf847e50a3e7730ccbe57abc25d086a01b 
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                    ISearchManager searchManagerService = ISearchManager.Stub.asInterface(
422                            ServiceManager.getService(Context.SEARCH_SERVICE));
423                    try {
424                        searchManagerService.stopSearch();
425                    } catch (RemoteException e) {
426                        Log.e(TAG, "error stopping search", e);
427                    }
428                }
429            });
430        }
431
432        mIsNewIntent = false;
433    }
434
435    @Override
436    protected void onPause() {
437        super.onPause();
438        dismissPreview(mPreviousView);
439        dismissPreview(mNextView);
440        mDragController.cancelDrag();
441    }
442
443    @Override
444    public Object onRetainNonConfigurationInstance() {
445        // Flag the loader to stop early before switching
446        mModel.stopLoader();
447
448        if (PROFILE_ROTATE) {
449            android.os.Debug.startMethodTracing("/sdcard/launcher-rotate");
450        }
451        return null;
452    }
453
454    private boolean acceptFilter() {
455        final InputMethodManager inputManager = (InputMethodManager)
456                getSystemService(Context.INPUT_METHOD_SERVICE);
457        return !inputManager.isFullscreenMode();
458    }
459
460    @Override
461    public boolean onKeyDown(int keyCode, KeyEvent event) {
462        boolean handled = super.onKeyDown(keyCode, event);
463        if (!handled && acceptFilter() && keyCode != KeyEvent.KEYCODE_ENTER) {
464            boolean gotKey = TextKeyListener.getInstance().onKeyDown(mWorkspace, mDefaultKeySsb,
465                    keyCode, event);
466            if (gotKey && mDefaultKeySsb != null && mDefaultKeySsb.length() > 0) {
467                // something usable has been typed - start a search
468                // the typed text will be retrieved and cleared by
469                // showSearchDialog()
470                // If there are multiple keystrokes before the search dialog takes focus,
471                // onSearchRequested() will be called for every keystroke,
472                // but it is idempotent, so it's fine.
473                return onSearchRequested();
474            }
475        }
476
477        return handled;
478    }
479
480    private String getTypedText() {
481        return mDefaultKeySsb.toString();
482    }
483
484    private void clearTypedText() {
485        mDefaultKeySsb.clear();
486        mDefaultKeySsb.clearSpans();
487        Selection.setSelection(mDefaultKeySsb, 0);
488    }
489
490    /**
491     * Restores the previous state, if it exists.
492     *
493     * @param savedState The previous state.
494     */
495    private void restoreState(Bundle savedState) {
496        if (savedState == null) {
497            return;
498        }
499
500        final boolean allApps = savedState.getBoolean(RUNTIME_STATE_ALL_APPS_FOLDER, false);
501        if (allApps) {
502            showAllApps(false);
503        }
504
505        final int currentScreen = savedState.getInt(RUNTIME_STATE_CURRENT_SCREEN, -1);
506        if (currentScreen > -1) {
507            mWorkspace.setCurrentScreen(currentScreen);
508        }
509
510        final int addScreen = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SCREEN, -1);
511        if (addScreen > -1) {
512            mAddItemCellInfo = new CellLayout.CellInfo();
513            final CellLayout.CellInfo addItemCellInfo = mAddItemCellInfo;
514            addItemCellInfo.valid = true;
515            addItemCellInfo.screen = addScreen;
516            addItemCellInfo.cellX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_X);
517            addItemCellInfo.cellY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_Y);
518            addItemCellInfo.spanX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_X);
519            addItemCellInfo.spanY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y);
520            addItemCellInfo.findVacantCellsFromOccupied(
521                    savedState.getBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS),
522                    savedState.getInt(RUNTIME_STATE_PENDING_ADD_COUNT_X),
523                    savedState.getInt(RUNTIME_STATE_PENDING_ADD_COUNT_Y));
524            mRestoring = true;
525        }
526
527        boolean renameFolder = savedState.getBoolean(RUNTIME_STATE_PENDING_FOLDER_RENAME, false);
528        if (renameFolder) {
529            long id = savedState.getLong(RUNTIME_STATE_PENDING_FOLDER_RENAME_ID);
530            mFolderInfo = mModel.getFolderById(this, mFolders, id);
531            mRestoring = true;
532        }
533    }
534
535    /**
536     * Finds all the views we need and configure them properly.
537     */
538    private void setupViews() {
539        DragController dragController = mDragController;
540
541        DragLayer dragLayer = (DragLayer) findViewById(R.id.drag_layer);
542        dragLayer.setDragController(dragController);
543
544        mAllAppsGrid = (AllAppsView)dragLayer.findViewById(R.id.all_apps_view);
545        mAllAppsGrid.setLauncher(this);
546        mAllAppsGrid.setDragController(dragController);
547        mAllAppsGrid.setWillNotDraw(false); // We don't want a hole punched in our window.
548        // Manage focusability manually since this thing is always visible
549        mAllAppsGrid.setFocusable(false);
550
551        mWorkspace = (Workspace) dragLayer.findViewById(R.id.workspace);
552        final Workspace workspace = mWorkspace;
553
554        DeleteZone deleteZone = (DeleteZone) dragLayer.findViewById(R.id.delete_zone);
555        mDeleteZone = deleteZone;
556
557        mHandleView = (HandleView) findViewById(R.id.all_apps_button);
558        mHandleView.setLauncher(this);
559        mHandleView.setOnClickListener(this);
560
561        mPreviousView = (ImageView) dragLayer.findViewById(R.id.previous_screen);
562        mNextView = (ImageView) dragLayer.findViewById(R.id.next_screen);
563
564        Drawable previous = mPreviousView.getDrawable();
565        Drawable next = mNextView.getDrawable();
566        mWorkspace.setIndicators(previous, next);
567
568        mPreviousView.setHapticFeedbackEnabled(false);
569        mPreviousView.setOnLongClickListener(this);
570        mNextView.setHapticFeedbackEnabled(false);
571        mNextView.setOnLongClickListener(this);
572
573        workspace.setOnLongClickListener(this);
574        workspace.setDragController(dragController);
575        workspace.setLauncher(this);
576
577        deleteZone.setLauncher(this);
578        deleteZone.setDragController(dragController);
579        deleteZone.setHandle(mHandleView);
580
581        dragController.setDragScoller(workspace);
582        dragController.setDragListener(deleteZone);
583        dragController.setScrollView(dragLayer);
584
585        // The order here is bottom to top.
586        dragController.addDropTarget(workspace);
587        dragController.addDropTarget(deleteZone);
588    }
589
590    @SuppressWarnings({"UnusedDeclaration"})
591    public void previousScreen(View v) {
592        if (!isAllAppsVisible()) {
593            mWorkspace.scrollLeft();
594        }
595    }
596
597    @SuppressWarnings({"UnusedDeclaration"})
598    public void nextScreen(View v) {
599        if (!isAllAppsVisible()) {
600            mWorkspace.scrollRight();
601        }
602    }
603
604    /**
605     * Creates a view representing a shortcut.
606     *
607     * @param info The data structure describing the shortcut.
608     *
609     * @return A View inflated from R.layout.application.
610     */
611    View createShortcut(ApplicationInfo info) {
612        return createShortcut(R.layout.application,
613                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), info);
614    }
615
616    /**
617     * Creates a view representing a shortcut inflated from the specified resource.
618     *
619     * @param layoutResId The id of the XML layout used to create the shortcut.
620     * @param parent The group the shortcut belongs to.
621     * @param info The data structure describing the shortcut.
622     *
623     * @return A View inflated from layoutResId.
624     */
625    View createShortcut(int layoutResId, ViewGroup parent, ApplicationInfo info) {
626        TextView favorite = (TextView) mInflater.inflate(layoutResId, parent, false);
627
628        if (info.icon == null) {
629            info.icon = AppInfoCache.getIconDrawable(getPackageManager(), info);
630        }
631        if (!info.filtered) {
632            info.icon = Utilities.createIconThumbnail(info.icon, this);
633            info.filtered = true;
634        }
635
636        favorite.setCompoundDrawablesWithIntrinsicBounds(null, info.icon, null, null);
637        favorite.setText(info.title);
638        favorite.setTag(info);
639        favorite.setOnClickListener(this);
640
641        return favorite;
642    }
643
644    /**
645     * Add an application shortcut to the workspace.
646     *
647     * @param data The intent describing the application.
648     * @param cellInfo The position on screen where to create the shortcut.
649     */
650    void completeAddApplication(Context context, Intent data, CellLayout.CellInfo cellInfo) {
651        cellInfo.screen = mWorkspace.getCurrentScreen();
652        if (!findSingleSlot(cellInfo)) return;
653
654        final ApplicationInfo info = infoFromApplicationIntent(context, data);
655        if (info != null) {
656            mWorkspace.addApplicationShortcut(info, cellInfo, isWorkspaceLocked());
657        }
658    }
659
660    private static ApplicationInfo infoFromApplicationIntent(Context context, Intent data) {
661        ComponentName component = data.getComponent();
662        PackageManager packageManager = context.getPackageManager();
663        ActivityInfo activityInfo = null;
664        try {
665            activityInfo = packageManager.getActivityInfo(component, 0 /* no flags */);
666        } catch (NameNotFoundException e) {
667            Log.e(TAG, "Couldn't find ActivityInfo for selected application", e);
668        }
669
670        if (activityInfo != null) {
671            ApplicationInfo itemInfo = new ApplicationInfo();
672
673            itemInfo.title = activityInfo.loadLabel(packageManager);
674            if (itemInfo.title == null) {
675                itemInfo.title = activityInfo.name;
676            }
677
678            itemInfo.setActivity(component, Intent.FLAG_ACTIVITY_NEW_TASK |
679                    Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
680            itemInfo.icon = activityInfo.loadIcon(packageManager);
681            itemInfo.container = ItemInfo.NO_ID;
682
683            return itemInfo;
684        }
685
686        return null;
687    }
688
689    /**
690     * Add a shortcut to the workspace.
691     *
692     * @param data The intent describing the shortcut.
693     * @param cellInfo The position on screen where to create the shortcut.
694     */
695    private void completeAddShortcut(Intent data, CellLayout.CellInfo cellInfo) {
696        cellInfo.screen = mWorkspace.getCurrentScreen();
697        if (!findSingleSlot(cellInfo)) return;
698
699        final ApplicationInfo info = addShortcut(this, data, cellInfo, false);
700
701        if (!mRestoring) {
702            final View view = createShortcut(info);
703            mWorkspace.addInCurrentScreen(view, cellInfo.cellX, cellInfo.cellY, 1, 1,
704                    isWorkspaceLocked());
705        }
706    }
707
708
709    /**
710     * Add a widget to the workspace.
711     *
712     * @param data The intent describing the appWidgetId.
713     * @param cellInfo The position on screen where to create the widget.
714     */
715    private void completeAddAppWidget(Intent data, CellLayout.CellInfo cellInfo) {
716        Bundle extras = data.getExtras();
717        int appWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
718
719        if (LOGD) Log.d(TAG, "dumping extras content=" + extras.toString());
720
721        AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
722
723        // Calculate the grid spans needed to fit this widget
724        CellLayout layout = (CellLayout) mWorkspace.getChildAt(cellInfo.screen);
725        int[] spans = layout.rectToCell(appWidgetInfo.minWidth, appWidgetInfo.minHeight);
726
727        // Try finding open space on Launcher screen
728        final int[] xy = mCellCoordinates;
729        if (!findSlot(cellInfo, xy, spans[0], spans[1])) {
730            if (appWidgetId != -1) mAppWidgetHost.deleteAppWidgetId(appWidgetId);
731            return;
732        }
733
734        // Build Launcher-specific widget info and save to database
735        LauncherAppWidgetInfo launcherInfo = new LauncherAppWidgetInfo(appWidgetId);
736        launcherInfo.spanX = spans[0];
737        launcherInfo.spanY = spans[1];
738
739        LauncherModel.addItemToDatabase(this, launcherInfo,
740                LauncherSettings.Favorites.CONTAINER_DESKTOP,
741                mWorkspace.getCurrentScreen(), xy[0], xy[1], false);
742
743        if (!mRestoring) {
744            mDesktopItems.add(launcherInfo);
745
746            // Perform actual inflation because we're live
747            launcherInfo.hostView = mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
748
749            launcherInfo.hostView.setAppWidget(appWidgetId, appWidgetInfo);
750            launcherInfo.hostView.setTag(launcherInfo);
751
752            mWorkspace.addInCurrentScreen(launcherInfo.hostView, xy[0], xy[1],
753                    launcherInfo.spanX, launcherInfo.spanY, isWorkspaceLocked());
754        }
755    }
756
757    public void removeAppWidget(LauncherAppWidgetInfo launcherInfo) {
758        mDesktopItems.remove(launcherInfo);
759        launcherInfo.hostView = null;
760    }
761
762    public LauncherAppWidgetHost getAppWidgetHost() {
763        return mAppWidgetHost;
764    }
765
766    static ApplicationInfo addShortcut(Context context, Intent data,
767            CellLayout.CellInfo cellInfo, boolean notify) {
768
769        final ApplicationInfo info = infoFromShortcutIntent(context, data);
770        LauncherModel.addItemToDatabase(context, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
771                cellInfo.screen, cellInfo.cellX, cellInfo.cellY, notify);
772
773        return info;
774    }
775
776    private static ApplicationInfo infoFromShortcutIntent(Context context, Intent data) {
777        Intent intent = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_INTENT);
778        String name = data.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
779        Bitmap bitmap = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_ICON);
780
781        Drawable icon = null;
782        boolean filtered = false;
783        boolean customIcon = false;
784        ShortcutIconResource iconResource = null;
785
786        if (bitmap != null) {
787            icon = new FastBitmapDrawable(Utilities.createBitmapThumbnail(bitmap, context));
788            filtered = true;
789            customIcon = true;
790        } else {
791            Parcelable extra = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE);
792            if (extra != null && extra instanceof ShortcutIconResource) {
793                try {
794                    iconResource = (ShortcutIconResource) extra;
795                    final PackageManager packageManager = context.getPackageManager();
796                    Resources resources = packageManager.getResourcesForApplication(
797                            iconResource.packageName);
798                    final int id = resources.getIdentifier(iconResource.resourceName, null, null);
799                    icon = resources.getDrawable(id);
800                } catch (Exception e) {
801                    Log.w(TAG, "Could not load shortcut icon: " + extra);
802                }
803            }
804        }
805
806        if (icon == null) {
807            icon = context.getPackageManager().getDefaultActivityIcon();
808        }
809
810        final ApplicationInfo info = new ApplicationInfo();
811        info.icon = icon;
812        info.filtered = filtered;
813        info.title = name;
814        info.intent = intent;
815        info.customIcon = customIcon;
816        info.iconResource = iconResource;
817
818        return info;
819    }
820
821    void closeSystemDialogs() {
822        closeAllApps(true);
823        getWindow().closeAllPanels();
824
825        try {
826            dismissDialog(DIALOG_CREATE_SHORTCUT);
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        try {
833            dismissDialog(DIALOG_RENAME_FOLDER);
834            // Unlock the workspace if the dialog was showing
835        } catch (Exception e) {
836            // An exception is thrown if the dialog is not visible, which is fine
837        }
838
839        // Whatever we were doing is hereby canceled.
840        mWaitingForResult = false;
841    }
842
843    @Override
844    protected void onNewIntent(Intent intent) {
845        super.onNewIntent(intent);
846
847        // Close the menu
848        if (Intent.ACTION_MAIN.equals(intent.getAction())) {
849            // also will cancel mWaitingForResult.
850            closeSystemDialogs();
851
852            // Set this flag so that onResume knows to close the search dialog if it's open,
853            // because this was a new intent (thus a press of 'home' or some such) rather than
854            // for example onResume being called when the user pressed the 'back' button.
855            mIsNewIntent = true;
856
857            boolean alreadyOnHome = ((intent.getFlags() & Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT)
858                        != Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT);
859            boolean allAppsVisible = isAllAppsVisible();
860            if (!mWorkspace.isDefaultScreenShowing()) {
861                mWorkspace.moveToDefaultScreen(alreadyOnHome && !allAppsVisible);
862            }
863            closeAllApps(alreadyOnHome && allAppsVisible);
864
865            final View v = getWindow().peekDecorView();
866            if (v != null && v.getWindowToken() != null) {
867                InputMethodManager imm = (InputMethodManager)getSystemService(
868                        INPUT_METHOD_SERVICE);
869                imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
870            }
871        }
872    }
873
874    @Override
875    protected void onRestoreInstanceState(Bundle savedInstanceState) {
876        // Do not call super here
877        mSavedInstanceState = savedInstanceState;
878    }
879
880    @Override
881    protected void onSaveInstanceState(Bundle outState) {
882        outState.putInt(RUNTIME_STATE_CURRENT_SCREEN, mWorkspace.getCurrentScreen());
883
884        final ArrayList<Folder> folders = mWorkspace.getOpenFolders();
885        if (folders.size() > 0) {
886            final int count = folders.size();
887            long[] ids = new long[count];
888            for (int i = 0; i < count; i++) {
889                final FolderInfo info = folders.get(i).getInfo();
890                ids[i] = info.id;
891            }
892            outState.putLongArray(RUNTIME_STATE_USER_FOLDERS, ids);
893        } else {
894            super.onSaveInstanceState(outState);
895        }
896
897        // TODO should not do this if the drawer is currently closing.
898        if (isAllAppsVisible()) {
899            outState.putBoolean(RUNTIME_STATE_ALL_APPS_FOLDER, true);
900        }
901
902        if (mAddItemCellInfo != null && mAddItemCellInfo.valid && mWaitingForResult) {
903            final CellLayout.CellInfo addItemCellInfo = mAddItemCellInfo;
904            final CellLayout layout = (CellLayout) mWorkspace.getChildAt(addItemCellInfo.screen);
905
906            outState.putInt(RUNTIME_STATE_PENDING_ADD_SCREEN, addItemCellInfo.screen);
907            outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_X, addItemCellInfo.cellX);
908            outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_Y, addItemCellInfo.cellY);
909            outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_X, addItemCellInfo.spanX);
910            outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y, addItemCellInfo.spanY);
911            outState.putInt(RUNTIME_STATE_PENDING_ADD_COUNT_X, layout.getCountX());
912            outState.putInt(RUNTIME_STATE_PENDING_ADD_COUNT_Y, layout.getCountY());
913            outState.putBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS,
914                   layout.getOccupiedCells());
915        }
916
917        if (mFolderInfo != null && mWaitingForResult) {
918            outState.putBoolean(RUNTIME_STATE_PENDING_FOLDER_RENAME, true);
919            outState.putLong(RUNTIME_STATE_PENDING_FOLDER_RENAME_ID, mFolderInfo.id);
920        }
921    }
922
923    @Override
924    public void onDestroy() {
925        super.onDestroy();
926
927        try {
928            mAppWidgetHost.stopListening();
929        } catch (NullPointerException ex) {
930            Log.w(TAG, "problem while stopping AppWidgetHost during Launcher destruction", ex);
931        }
932
933        TextKeyListener.getInstance().release();
934
935        mModel.stopLoader();
936
937        unbindDesktopItems();
938        AppInfoCache.unbindDrawables();
939
940        getContentResolver().unregisterContentObserver(mWidgetObserver);
941
942        dismissPreview(mPreviousView);
943        dismissPreview(mNextView);
944
945        unregisterReceiver(mCloseSystemDialogsReceiver);
946    }
947
948    @Override
949    public void startActivityForResult(Intent intent, int requestCode) {
950        if (requestCode >= 0) mWaitingForResult = true;
951        super.startActivityForResult(intent, requestCode);
952    }
953
954    @Override
955    public void startSearch(String initialQuery, boolean selectInitialQuery,
956            Bundle appSearchData, boolean globalSearch) {
957
958        closeAllApps(true);
959
960        // Slide the search widget to the top, if it's on the current screen,
961        // otherwise show the search dialog immediately.
962        Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
963        if (searchWidget == null) {
964            showSearchDialog(initialQuery, selectInitialQuery, appSearchData, globalSearch);
965        } else {
966            searchWidget.startSearch(initialQuery, selectInitialQuery, appSearchData, globalSearch);
967            // show the currently typed text in the search widget while sliding
968            searchWidget.setQuery(getTypedText());
969        }
970    }
971
972    /**
973     * Show the search dialog immediately, without changing the search widget.
974     *
975     * @see Activity#startSearch(String, boolean, android.os.Bundle, boolean)
976     */
977    void showSearchDialog(String initialQuery, boolean selectInitialQuery,
978            Bundle appSearchData, boolean globalSearch) {
979
980        if (initialQuery == null) {
981            // Use any text typed in the launcher as the initial query
982            initialQuery = getTypedText();
983            clearTypedText();
984        }
985        if (appSearchData == null) {
986            appSearchData = new Bundle();
987            appSearchData.putString(SearchManager.SOURCE, "launcher-search");
988        }
989
990        final SearchManager searchManager =
991                (SearchManager) getSystemService(Context.SEARCH_SERVICE);
992
993        final Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
994        if (searchWidget != null) {
995            // This gets called when the user leaves the search dialog to go back to
996            // the Launcher.
997            searchManager.setOnCancelListener(new SearchManager.OnCancelListener() {
998                public void onCancel() {
999                    searchManager.setOnCancelListener(null);
1000                    stopSearch();
1001                }
1002            });
1003        }
1004
1005        searchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(),
1006            appSearchData, globalSearch);
1007    }
1008
1009    /**
1010     * Cancel search dialog if it is open.
1011     */
1012    void stopSearch() {
1013        // Close search dialog
1014        SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
1015        searchManager.stopSearch();
1016        // Restore search widget to its normal position
1017        Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
1018        if (searchWidget != null) {
1019            searchWidget.stopSearch(false);
1020        }
1021    }
1022
1023    @Override
1024    public boolean onCreateOptionsMenu(Menu menu) {
1025        if (isWorkspaceLocked()) {
1026            return false;
1027        }
1028
1029        super.onCreateOptionsMenu(menu);
1030        menu.add(MENU_GROUP_ADD, MENU_ADD, 0, R.string.menu_add)
1031                .setIcon(android.R.drawable.ic_menu_add)
1032                .setAlphabeticShortcut('A');
1033        menu.add(0, MENU_WALLPAPER_SETTINGS, 0, R.string.menu_wallpaper)
1034                 .setIcon(android.R.drawable.ic_menu_gallery)
1035                 .setAlphabeticShortcut('W');
1036        menu.add(0, MENU_SEARCH, 0, R.string.menu_search)
1037                .setIcon(android.R.drawable.ic_search_category_default)
1038                .setAlphabeticShortcut(SearchManager.MENU_KEY);
1039        menu.add(0, MENU_NOTIFICATIONS, 0, R.string.menu_notifications)
1040                .setIcon(com.android.internal.R.drawable.ic_menu_notifications)
1041                .setAlphabeticShortcut('N');
1042
1043        final Intent settings = new Intent(android.provider.Settings.ACTION_SETTINGS);
1044        settings.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
1045                Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
1046
1047        menu.add(0, MENU_SETTINGS, 0, R.string.menu_settings)
1048                .setIcon(android.R.drawable.ic_menu_preferences).setAlphabeticShortcut('P')
1049                .setIntent(settings);
1050
1051        return true;
1052    }
1053
1054    @Override
1055    public boolean onPrepareOptionsMenu(Menu menu) {
1056        super.onPrepareOptionsMenu(menu);
1057
1058        mMenuAddInfo = mWorkspace.findAllVacantCells(null);
1059        menu.setGroupEnabled(MENU_GROUP_ADD, mMenuAddInfo != null && mMenuAddInfo.valid);
1060
1061        return true;
1062    }
1063
1064    @Override
1065    public boolean onOptionsItemSelected(MenuItem item) {
1066        switch (item.getItemId()) {
1067            case MENU_ADD:
1068                addItems();
1069                return true;
1070            case MENU_WALLPAPER_SETTINGS:
1071                startWallpaper();
1072                return true;
1073            case MENU_SEARCH:
1074                onSearchRequested();
1075                return true;
1076            case MENU_NOTIFICATIONS:
1077                showNotifications();
1078                return true;
1079        }
1080
1081        return super.onOptionsItemSelected(item);
1082    }
1083
1084    /**
1085     * Indicates that we want global search for this activity by setting the globalSearch
1086     * argument for {@link #startSearch} to true.
1087     */
1088
1089    @Override
1090    public boolean onSearchRequested() {
1091        startSearch(null, false, null, true);
1092        return true;
1093    }
1094
1095    public boolean isWorkspaceLocked() {
1096        return mWorkspaceLoading || mWaitingForResult;
1097    }
1098
1099    private void addItems() {
1100        closeAllApps(true);
1101        showAddDialog(mMenuAddInfo);
1102    }
1103
1104    void addAppWidget(Intent data) {
1105        // TODO: catch bad widget exception when sent
1106        int appWidgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
1107
1108        String customWidget = data.getStringExtra(EXTRA_CUSTOM_WIDGET);
1109        if (SEARCH_WIDGET.equals(customWidget)) {
1110            // We don't need this any more, since this isn't a real app widget.
1111            mAppWidgetHost.deleteAppWidgetId(appWidgetId);
1112            // add the search widget
1113            addSearch();
1114        } else {
1115            AppWidgetProviderInfo appWidget = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
1116
1117            if (appWidget.configure != null) {
1118                // Launch over to configure widget, if needed
1119                Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_CONFIGURE);
1120                intent.setComponent(appWidget.configure);
1121                intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
1122
1123                startActivityForResult(intent, REQUEST_CREATE_APPWIDGET);
1124            } else {
1125                // Otherwise just add it
1126                onActivityResult(REQUEST_CREATE_APPWIDGET, Activity.RESULT_OK, data);
1127            }
1128        }
1129    }
1130
1131    void addSearch() {
1132        final Widget info = Widget.makeSearch();
1133        final CellLayout.CellInfo cellInfo = mAddItemCellInfo;
1134
1135        final int[] xy = mCellCoordinates;
1136        final int spanX = info.spanX;
1137        final int spanY = info.spanY;
1138
1139        if (!findSlot(cellInfo, xy, spanX, spanY)) return;
1140
1141        LauncherModel.addItemToDatabase(this, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
1142        mWorkspace.getCurrentScreen(), xy[0], xy[1], false);
1143
1144        final View view = mInflater.inflate(info.layoutResource, null);
1145        view.setTag(info);
1146        Search search = (Search) view.findViewById(R.id.widget_search);
1147        search.setLauncher(this);
1148
1149        mWorkspace.addInCurrentScreen(view, xy[0], xy[1], info.spanX, spanY);
1150    }
1151
1152    void processShortcut(Intent intent, int requestCodeApplication, int requestCodeShortcut) {
1153        // Handle case where user selected "Applications"
1154        String applicationName = getResources().getString(R.string.group_applications);
1155        String shortcutName = intent.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
1156
1157        if (applicationName != null && applicationName.equals(shortcutName)) {
1158            Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
1159            mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
1160
1161            Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1162            pickIntent.putExtra(Intent.EXTRA_INTENT, mainIntent);
1163            startActivityForResult(pickIntent, requestCodeApplication);
1164        } else {
1165            startActivityForResult(intent, requestCodeShortcut);
1166        }
1167    }
1168
1169    void addLiveFolder(Intent intent) {
1170        // Handle case where user selected "Folder"
1171        String folderName = getResources().getString(R.string.group_folder);
1172        String shortcutName = intent.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
1173
1174        if (folderName != null && folderName.equals(shortcutName)) {
1175            addFolder();
1176        } else {
1177            startActivityForResult(intent, REQUEST_CREATE_LIVE_FOLDER);
1178        }
1179    }
1180
1181    void addFolder() {
1182        UserFolderInfo folderInfo = new UserFolderInfo();
1183        folderInfo.title = getText(R.string.folder_name);
1184
1185        CellLayout.CellInfo cellInfo = mAddItemCellInfo;
1186        cellInfo.screen = mWorkspace.getCurrentScreen();
1187        if (!findSingleSlot(cellInfo)) return;
1188
1189        // Update the model
1190        LauncherModel.addItemToDatabase(this, folderInfo,
1191                LauncherSettings.Favorites.CONTAINER_DESKTOP,
1192                mWorkspace.getCurrentScreen(), cellInfo.cellX, cellInfo.cellY, false);
1193        mFolders.put(folderInfo.id, folderInfo);
1194
1195        // Create the view
1196        FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon, this,
1197                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), folderInfo);
1198        mWorkspace.addInCurrentScreen(newFolder,
1199                cellInfo.cellX, cellInfo.cellY, 1, 1, isWorkspaceLocked());
1200    }
1201
1202    void removeFolder(FolderInfo folder) {
1203        mFolders.remove(folder.id);
1204    }
1205
1206    private void completeAddLiveFolder(Intent data, CellLayout.CellInfo cellInfo) {
1207        cellInfo.screen = mWorkspace.getCurrentScreen();
1208        if (!findSingleSlot(cellInfo)) return;
1209
1210        final LiveFolderInfo info = addLiveFolder(this, data, cellInfo, false);
1211
1212        if (!mRestoring) {
1213            final View view = LiveFolderIcon.fromXml(R.layout.live_folder_icon, this,
1214                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), info);
1215            mWorkspace.addInCurrentScreen(view, cellInfo.cellX, cellInfo.cellY, 1, 1,
1216                    isWorkspaceLocked());
1217        }
1218    }
1219
1220    static LiveFolderInfo addLiveFolder(Context context, Intent data,
1221            CellLayout.CellInfo cellInfo, boolean notify) {
1222
1223        Intent baseIntent = data.getParcelableExtra(LiveFolders.EXTRA_LIVE_FOLDER_BASE_INTENT);
1224        String name = data.getStringExtra(LiveFolders.EXTRA_LIVE_FOLDER_NAME);
1225
1226        Drawable icon = null;
1227        boolean filtered = false;
1228        Intent.ShortcutIconResource iconResource = null;
1229
1230        Parcelable extra = data.getParcelableExtra(LiveFolders.EXTRA_LIVE_FOLDER_ICON);
1231        if (extra != null && extra instanceof Intent.ShortcutIconResource) {
1232            try {
1233                iconResource = (Intent.ShortcutIconResource) extra;
1234                final PackageManager packageManager = context.getPackageManager();
1235                Resources resources = packageManager.getResourcesForApplication(
1236                        iconResource.packageName);
1237                final int id = resources.getIdentifier(iconResource.resourceName, null, null);
1238                icon = resources.getDrawable(id);
1239            } catch (Exception e) {
1240                Log.w(TAG, "Could not load live folder icon: " + extra);
1241            }
1242        }
1243
1244        if (icon == null) {
1245            icon = context.getResources().getDrawable(R.drawable.ic_launcher_folder);
1246        }
1247
1248        final LiveFolderInfo info = new LiveFolderInfo();
1249        info.icon = icon;
1250        info.filtered = filtered;
1251        info.title = name;
1252        info.iconResource = iconResource;
1253        info.uri = data.getData();
1254        info.baseIntent = baseIntent;
1255        info.displayMode = data.getIntExtra(LiveFolders.EXTRA_LIVE_FOLDER_DISPLAY_MODE,
1256                LiveFolders.DISPLAY_MODE_GRID);
1257
1258        LauncherModel.addItemToDatabase(context, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
1259                cellInfo.screen, cellInfo.cellX, cellInfo.cellY, notify);
1260        mFolders.put(info.id, info);
1261
1262        return info;
1263    }
1264
1265    private boolean findSingleSlot(CellLayout.CellInfo cellInfo) {
1266        final int[] xy = new int[2];
1267        if (findSlot(cellInfo, xy, 1, 1)) {
1268            cellInfo.cellX = xy[0];
1269            cellInfo.cellY = xy[1];
1270            return true;
1271        }
1272        return false;
1273    }
1274
1275    private boolean findSlot(CellLayout.CellInfo cellInfo, int[] xy, int spanX, int spanY) {
1276        if (!cellInfo.findCellForSpan(xy, spanX, spanY)) {
1277            boolean[] occupied = mSavedState != null ?
1278                    mSavedState.getBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS) : null;
1279            cellInfo = mWorkspace.findAllVacantCells(occupied);
1280            if (!cellInfo.findCellForSpan(xy, spanX, spanY)) {
1281                Toast.makeText(this, getString(R.string.out_of_space), Toast.LENGTH_SHORT).show();
1282                return false;
1283            }
1284        }
1285        return true;
1286    }
1287
1288    private void showNotifications() {
1289        final StatusBarManager statusBar = (StatusBarManager) getSystemService(STATUS_BAR_SERVICE);
1290        if (statusBar != null) {
1291            statusBar.expand();
1292        }
1293    }
1294
1295    private void startWallpaper() {
1296        closeAllApps(true);
1297        final Intent pickWallpaper = new Intent(Intent.ACTION_SET_WALLPAPER);
1298        Intent chooser = Intent.createChooser(pickWallpaper,
1299                getText(R.string.chooser_wallpaper));
1300        // NOTE: Adds a configure option to the chooser if the wallpaper supports it
1301        //       Removed in Eclair MR1
1302//        WallpaperManager wm = (WallpaperManager)
1303//                getSystemService(Context.WALLPAPER_SERVICE);
1304//        WallpaperInfo wi = wm.getWallpaperInfo();
1305//        if (wi != null && wi.getSettingsActivity() != null) {
1306//            LabeledIntent li = new LabeledIntent(getPackageName(),
1307//                    R.string.configure_wallpaper, 0);
1308//            li.setClassName(wi.getPackageName(), wi.getSettingsActivity());
1309//            chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Intent[] { li });
1310//        }
1311        startActivityForResult(chooser, REQUEST_PICK_WALLPAPER);
1312    }
1313
1314    /**
1315     * Registers various content observers. The current implementation registers
1316     * only a favorites observer to keep track of the favorites applications.
1317     */
1318    private void registerContentObservers() {
1319        ContentResolver resolver = getContentResolver();
1320        resolver.registerContentObserver(LauncherProvider.CONTENT_APPWIDGET_RESET_URI,
1321                true, mWidgetObserver);
1322    }
1323
1324    @Override
1325    public boolean dispatchKeyEvent(KeyEvent event) {
1326        if (event.getAction() == KeyEvent.ACTION_DOWN) {
1327            switch (event.getKeyCode()) {
1328                case KeyEvent.KEYCODE_HOME:
1329                    return true;
1330                case KeyEvent.KEYCODE_VOLUME_DOWN:
1331                    if (SystemProperties.getInt("launcher2.dumpstate", 0) != 0) {
1332                        dumpState();
1333                        return true;
1334                    }
1335                    break;
1336            }
1337        } else if (event.getAction() == KeyEvent.ACTION_UP) {
1338            switch (event.getKeyCode()) {
1339                case KeyEvent.KEYCODE_HOME:
1340                    return true;
1341            }
1342        }
1343
1344        return super.dispatchKeyEvent(event);
1345    }
1346
1347    @Override
1348    public void onBackPressed() {
1349        if (isAllAppsVisible()) {
1350            closeAllApps(true);
1351        } else {
1352            closeFolder();
1353        }
1354        dismissPreview(mPreviousView);
1355        dismissPreview(mNextView);
1356    }
1357
1358    private void closeFolder() {
1359        Folder folder = mWorkspace.getOpenFolder();
1360        if (folder != null) {
1361            closeFolder(folder);
1362        }
1363    }
1364
1365    void closeFolder(Folder folder) {
1366        folder.getInfo().opened = false;
1367        ViewGroup parent = (ViewGroup) folder.getParent();
1368        if (parent != null) {
1369            parent.removeView(folder);
1370            if (folder instanceof DropTarget) {
1371                // Live folders aren't DropTargets.
1372                mDragController.removeDropTarget((DropTarget)folder);
1373            }
1374        }
1375        folder.onClose();
1376    }
1377
1378    /**
1379     * Re-listen when widgets are reset.
1380     */
1381    private void onAppWidgetReset() {
1382        mAppWidgetHost.startListening();
1383    }
1384
1385    /**
1386     * Go through the and disconnect any of the callbacks in the drawables and the views or we
1387     * leak the previous Home screen on orientation change.
1388     */
1389    private void unbindDesktopItems() {
1390        for (ItemInfo item: mDesktopItems) {
1391            item.unbind();
1392        }
1393    }
1394
1395    /**
1396     * Launches the intent referred by the clicked shortcut.
1397     *
1398     * @param v The view representing the clicked shortcut.
1399     */
1400    public void onClick(View v) {
1401        Object tag = v.getTag();
1402        if (tag instanceof ApplicationInfo) {
1403            // Open shortcut
1404            final Intent intent = ((ApplicationInfo) tag).intent;
1405            startActivitySafely(intent);
1406        } else if (tag instanceof FolderInfo) {
1407            handleFolderClick((FolderInfo) tag);
1408        } else if (v == mHandleView) {
1409            if (isAllAppsVisible()) {
1410                closeAllApps(true);
1411            } else {
1412                showAllApps(true);
1413            }
1414        }
1415    }
1416
1417    void startActivitySafely(Intent intent) {
1418        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
1419        try {
1420            startActivity(intent);
1421        } catch (ActivityNotFoundException e) {
1422            Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
1423        } catch (SecurityException e) {
1424            Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
1425            Log.e(TAG, "Launcher does not have the permission to launch " + intent +
1426                    ". Make sure to create a MAIN intent-filter for the corresponding activity " +
1427                    "or use the exported attribute for this activity.", e);
1428        }
1429    }
1430
1431    private void handleFolderClick(FolderInfo folderInfo) {
1432        if (!folderInfo.opened) {
1433            // Close any open folder
1434            closeFolder();
1435            // Open the requested folder
1436            openFolder(folderInfo);
1437        } else {
1438            // Find the open folder...
1439            Folder openFolder = mWorkspace.getFolderForTag(folderInfo);
1440            int folderScreen;
1441            if (openFolder != null) {
1442                folderScreen = mWorkspace.getScreenForView(openFolder);
1443                // .. and close it
1444                closeFolder(openFolder);
1445                if (folderScreen != mWorkspace.getCurrentScreen()) {
1446                    // Close any folder open on the current screen
1447                    closeFolder();
1448                    // Pull the folder onto this screen
1449                    openFolder(folderInfo);
1450                }
1451            }
1452        }
1453    }
1454
1455    /**
1456     * Opens the user fodler described by the specified tag. The opening of the folder
1457     * is animated relative to the specified View. If the View is null, no animation
1458     * is played.
1459     *
1460     * @param folderInfo The FolderInfo describing the folder to open.
1461     */
1462    private void openFolder(FolderInfo folderInfo) {
1463        Folder openFolder;
1464
1465        if (folderInfo instanceof UserFolderInfo) {
1466            openFolder = UserFolder.fromXml(this);
1467        } else if (folderInfo instanceof LiveFolderInfo) {
1468            openFolder = com.android.launcher2.LiveFolder.fromXml(this, folderInfo);
1469        } else {
1470            return;
1471        }
1472
1473        openFolder.setDragController(mDragController);
1474        openFolder.setLauncher(this);
1475
1476        openFolder.bind(folderInfo);
1477        folderInfo.opened = true;
1478
1479        mWorkspace.addInScreen(openFolder, folderInfo.screen, 0, 0, 4, 4);
1480        openFolder.onOpen();
1481    }
1482
1483    public boolean onLongClick(View v) {
1484        switch (v.getId()) {
1485            case R.id.previous_screen:
1486                if (!isAllAppsVisible()) {
1487                    mWorkspace.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS,
1488                            HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
1489                    showPreviousPreview(v);
1490                }
1491                return true;
1492            case R.id.next_screen:
1493                if (!isAllAppsVisible()) {
1494                    mWorkspace.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS,
1495                            HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
1496                    showNextPreview(v);
1497                }
1498                return true;
1499        }
1500
1501        if (isWorkspaceLocked()) {
1502            return false;
1503        }
1504
1505        if (!(v instanceof CellLayout)) {
1506            v = (View) v.getParent();
1507        }
1508
1509        CellLayout.CellInfo cellInfo = (CellLayout.CellInfo) v.getTag();
1510
1511        // This happens when long clicking an item with the dpad/trackball
1512        if (cellInfo == null) {
1513            return true;
1514        }
1515
1516        if (mWorkspace.allowLongPress()) {
1517            if (cellInfo.cell == null) {
1518                if (cellInfo.valid) {
1519                    // User long pressed on empty space
1520                    mWorkspace.setAllowLongPress(false);
1521                    showAddDialog(cellInfo);
1522                }
1523            } else {
1524                if (!(cellInfo.cell instanceof Folder)) {
1525                    // User long pressed on an item
1526                    mWorkspace.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS,
1527                            HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
1528                    mWorkspace.startDrag(cellInfo);
1529                }
1530            }
1531        }
1532        return true;
1533    }
1534
1535    @SuppressWarnings({"unchecked"})
1536    private void dismissPreview(final View v) {
1537        final PopupWindow window = (PopupWindow) v.getTag();
1538        if (window != null) {
1539            window.setOnDismissListener(new PopupWindow.OnDismissListener() {
1540                public void onDismiss() {
1541                    ViewGroup group = (ViewGroup) v.getTag(R.id.workspace);
1542                    int count = group.getChildCount();
1543                    for (int i = 0; i < count; i++) {
1544                        ((ImageView) group.getChildAt(i)).setImageDrawable(null);
1545                    }
1546                    ArrayList<Bitmap> bitmaps = (ArrayList<Bitmap>) v.getTag(R.id.icon);
1547                    for (Bitmap bitmap : bitmaps) bitmap.recycle();
1548
1549                    v.setTag(R.id.workspace, null);
1550                    v.setTag(R.id.icon, null);
1551                    window.setOnDismissListener(null);
1552                }
1553            });
1554            window.dismiss();
1555        }
1556        v.setTag(null);
1557    }
1558
1559    private void showPreviousPreview(View anchor) {
1560        int current = mWorkspace.getCurrentScreen();
1561        if (current <= 0) return;
1562
1563        showPreviews(anchor, 0, mWorkspace.getChildCount());
1564    }
1565
1566    private void showNextPreview(View anchor) {
1567        int current = mWorkspace.getCurrentScreen();
1568        if (current >= mWorkspace.getChildCount() - 1) return;
1569
1570        showPreviews(anchor, 0, mWorkspace.getChildCount());
1571    }
1572
1573    private void showPreviews(final View anchor, int start, int end) {
1574        Resources resources = getResources();
1575
1576        Workspace workspace = mWorkspace;
1577        CellLayout cell = ((CellLayout) workspace.getChildAt(start));
1578
1579        float max = workspace.getChildCount();
1580
1581        Rect r = new Rect();
1582        resources.getDrawable(R.drawable.preview_background).getPadding(r);
1583        int extraW = (int) ((r.left + r.right) * max);
1584        int extraH = r.top + r.bottom;
1585
1586        int aW = cell.getWidth() - extraW;
1587        float w = aW / max;
1588
1589        int width = cell.getWidth();
1590        int height = cell.getHeight();
1591        int x = cell.getLeftPadding();
1592        int y = cell.getTopPadding();
1593        width -= (x + cell.getRightPadding());
1594        height -= (y + cell.getBottomPadding());
1595
1596        float scale = w / width;
1597
1598        int count = end - start;
1599
1600        final float sWidth = width * scale;
1601        float sHeight = height * scale;
1602
1603        LinearLayout preview = new LinearLayout(this);
1604
1605        PreviewTouchHandler handler = new PreviewTouchHandler(anchor);
1606        ArrayList<Bitmap> bitmaps = new ArrayList<Bitmap>(count);
1607
1608        for (int i = start; i < end; i++) {
1609            ImageView image = new ImageView(this);
1610            cell = (CellLayout) workspace.getChildAt(i);
1611
1612            Bitmap bitmap = Bitmap.createBitmap((int) sWidth, (int) sHeight,
1613                    Bitmap.Config.ARGB_8888);
1614
1615            Canvas c = new Canvas(bitmap);
1616            c.scale(scale, scale);
1617            c.translate(-cell.getLeftPadding(), -cell.getTopPadding());
1618            cell.dispatchDraw(c);
1619
1620            image.setBackgroundDrawable(resources.getDrawable(R.drawable.preview_background));
1621            image.setImageBitmap(bitmap);
1622            image.setTag(i);
1623            image.setOnClickListener(handler);
1624            image.setOnFocusChangeListener(handler);
1625            image.setFocusable(true);
1626            if (i == mWorkspace.getCurrentScreen()) image.requestFocus();
1627
1628            preview.addView(image,
1629                    LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
1630
1631            bitmaps.add(bitmap);
1632        }
1633
1634        PopupWindow p = new PopupWindow(this);
1635        p.setContentView(preview);
1636        p.setWidth((int) (sWidth * count + extraW));
1637        p.setHeight((int) (sHeight + extraH));
1638        p.setAnimationStyle(R.style.AnimationPreview);
1639        p.setOutsideTouchable(true);
1640        p.setFocusable(true);
1641        p.setBackgroundDrawable(new ColorDrawable(0));
1642        p.showAsDropDown(anchor, 0, 0);
1643
1644        p.setOnDismissListener(new PopupWindow.OnDismissListener() {
1645            public void onDismiss() {
1646                dismissPreview(anchor);
1647            }
1648        });
1649
1650        anchor.setTag(p);
1651        anchor.setTag(R.id.workspace, preview);
1652        anchor.setTag(R.id.icon, bitmaps);
1653    }
1654
1655    class PreviewTouchHandler implements View.OnClickListener, Runnable, View.OnFocusChangeListener {
1656        private final View mAnchor;
1657
1658        public PreviewTouchHandler(View anchor) {
1659            mAnchor = anchor;
1660        }
1661
1662        public void onClick(View v) {
1663            mWorkspace.snapToScreen((Integer) v.getTag());
1664            v.post(this);
1665        }
1666
1667        public void run() {
1668            dismissPreview(mAnchor);
1669        }
1670
1671        public void onFocusChange(View v, boolean hasFocus) {
1672            if (hasFocus) {
1673                mWorkspace.snapToScreen((Integer) v.getTag());
1674            }
1675        }
1676    }
1677
1678    View getDrawerHandle() {
1679        return mHandleView;
1680    }
1681
1682    Workspace getWorkspace() {
1683        return mWorkspace;
1684    }
1685
1686    @Override
1687    protected Dialog onCreateDialog(int id) {
1688        switch (id) {
1689            case DIALOG_CREATE_SHORTCUT:
1690                return new CreateShortcut().createDialog();
1691            case DIALOG_RENAME_FOLDER:
1692                return new RenameFolder().createDialog();
1693        }
1694
1695        return super.onCreateDialog(id);
1696    }
1697
1698    @Override
1699    protected void onPrepareDialog(int id, Dialog dialog) {
1700        switch (id) {
1701            case DIALOG_CREATE_SHORTCUT:
1702                break;
1703            case DIALOG_RENAME_FOLDER:
1704                if (mFolderInfo != null) {
1705                    EditText input = (EditText) dialog.findViewById(R.id.folder_name);
1706                    final CharSequence text = mFolderInfo.title;
1707                    input.setText(text);
1708                    input.setSelection(0, text.length());
1709                }
1710                break;
1711        }
1712    }
1713
1714    void showRenameDialog(FolderInfo info) {
1715        mFolderInfo = info;
1716        mWaitingForResult = true;
1717        showDialog(DIALOG_RENAME_FOLDER);
1718    }
1719
1720    private void showAddDialog(CellLayout.CellInfo cellInfo) {
1721        mAddItemCellInfo = cellInfo;
1722        mWaitingForResult = true;
1723        showDialog(DIALOG_CREATE_SHORTCUT);
1724    }
1725
1726    private void pickShortcut(int requestCode, int title) {
1727        Bundle bundle = new Bundle();
1728
1729        ArrayList<String> shortcutNames = new ArrayList<String>();
1730        shortcutNames.add(getString(R.string.group_applications));
1731        bundle.putStringArrayList(Intent.EXTRA_SHORTCUT_NAME, shortcutNames);
1732
1733        ArrayList<ShortcutIconResource> shortcutIcons = new ArrayList<ShortcutIconResource>();
1734        shortcutIcons.add(ShortcutIconResource.fromContext(Launcher.this,
1735                        R.drawable.ic_launcher_application));
1736        bundle.putParcelableArrayList(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, shortcutIcons);
1737
1738        Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1739        pickIntent.putExtra(Intent.EXTRA_INTENT, new Intent(Intent.ACTION_CREATE_SHORTCUT));
1740        pickIntent.putExtra(Intent.EXTRA_TITLE, getText(title));
1741        pickIntent.putExtras(bundle);
1742
1743        startActivityForResult(pickIntent, requestCode);
1744    }
1745
1746    private class RenameFolder {
1747        private EditText mInput;
1748
1749        Dialog createDialog() {
1750            mWaitingForResult = true;
1751            final View layout = View.inflate(Launcher.this, R.layout.rename_folder, null);
1752            mInput = (EditText) layout.findViewById(R.id.folder_name);
1753
1754            AlertDialog.Builder builder = new AlertDialog.Builder(Launcher.this);
1755            builder.setIcon(0);
1756            builder.setTitle(getString(R.string.rename_folder_title));
1757            builder.setCancelable(true);
1758            builder.setOnCancelListener(new Dialog.OnCancelListener() {
1759                public void onCancel(DialogInterface dialog) {
1760                    cleanup();
1761                }
1762            });
1763            builder.setNegativeButton(getString(R.string.cancel_action),
1764                new Dialog.OnClickListener() {
1765                    public void onClick(DialogInterface dialog, int which) {
1766                        cleanup();
1767                    }
1768                }
1769            );
1770            builder.setPositiveButton(getString(R.string.rename_action),
1771                new Dialog.OnClickListener() {
1772                    public void onClick(DialogInterface dialog, int which) {
1773                        changeFolderName();
1774                    }
1775                }
1776            );
1777            builder.setView(layout);
1778
1779            final AlertDialog dialog = builder.create();
1780            dialog.setOnShowListener(new DialogInterface.OnShowListener() {
1781                public void onShow(DialogInterface dialog) {
1782                    mInput.requestFocus();
1783                    InputMethodManager inputManager = (InputMethodManager)
1784                            getSystemService(Context.INPUT_METHOD_SERVICE);
1785                    inputManager.showSoftInput(mInput, 0);
1786                }
1787            });
1788
1789            return dialog;
1790        }
1791
1792        private void changeFolderName() {
1793            final String name = mInput.getText().toString();
1794            if (!TextUtils.isEmpty(name)) {
1795                // Make sure we have the right folder info
1796                mFolderInfo = mFolders.get(mFolderInfo.id);
1797                mFolderInfo.title = name;
1798                LauncherModel.updateItemInDatabase(Launcher.this, mFolderInfo);
1799
1800                if (mWorkspaceLoading) {
1801                    lockAllApps();
1802                    mModel.setWorkspaceDirty();
1803                    mModel.startLoader(Launcher.this, false);
1804                } else {
1805                    final FolderIcon folderIcon = (FolderIcon)
1806                            mWorkspace.getViewForTag(mFolderInfo);
1807                    if (folderIcon != null) {
1808                        folderIcon.setText(name);
1809                        getWorkspace().requestLayout();
1810                    } else {
1811                        lockAllApps();
1812                        mModel.setWorkspaceDirty();
1813                        mWorkspaceLoading = true;
1814                        mModel.startLoader(Launcher.this, false);
1815                    }
1816                }
1817            }
1818            cleanup();
1819        }
1820
1821        private void cleanup() {
1822            dismissDialog(DIALOG_RENAME_FOLDER);
1823            mWaitingForResult = false;
1824            mFolderInfo = null;
1825        }
1826    }
1827
1828    boolean isAllAppsVisible() {
1829        return mAllAppsGrid.isVisible();
1830    }
1831
1832    boolean isAllAppsOpaque() {
1833        return mAllAppsGrid.isOpaque();
1834    }
1835
1836    void showAllApps(boolean animated) {
1837        mAllAppsGrid.zoom(1.0f, animated);
1838        //mWorkspace.hide();
1839
1840        mWorkspace.startFading(false);
1841
1842        mAllAppsGrid.setFocusable(true);
1843        mAllAppsGrid.requestFocus();
1844
1845        // TODO: fade these two too
1846        mDeleteZone.setVisibility(View.GONE);
1847        //mHandleView.setVisibility(View.GONE);
1848    }
1849
1850    void closeAllApps(boolean animated) {
1851        if (mAllAppsGrid.isVisible()) {
1852            mAllAppsGrid.zoom(0.0f, animated);
1853            mAllAppsGrid.setFocusable(false);
1854            mWorkspace.getChildAt(mWorkspace.getCurrentScreen()).requestFocus();
1855            mWorkspace.startFading(true);
1856
1857            // TODO: fade these two too
1858            /*
1859            mDeleteZone.setVisibility(View.VISIBLE);
1860            mHandleView.setVisibility(View.VISIBLE);
1861            */
1862        }
1863    }
1864
1865    void lockAllApps() {
1866        // TODO
1867    }
1868
1869    void unlockAllApps() {
1870        // TODO
1871    }
1872
1873    /**
1874     * Displays the shortcut creation dialog and launches, if necessary, the
1875     * appropriate activity.
1876     */
1877    private class CreateShortcut implements DialogInterface.OnClickListener,
1878            DialogInterface.OnCancelListener, DialogInterface.OnDismissListener,
1879            DialogInterface.OnShowListener {
1880
1881        private AddAdapter mAdapter;
1882
1883        Dialog createDialog() {
1884            mWaitingForResult = true;
1885
1886            mAdapter = new AddAdapter(Launcher.this);
1887
1888            final AlertDialog.Builder builder = new AlertDialog.Builder(Launcher.this);
1889            builder.setTitle(getString(R.string.menu_item_add_item));
1890            builder.setAdapter(mAdapter, this);
1891
1892            builder.setInverseBackgroundForced(true);
1893
1894            AlertDialog dialog = builder.create();
1895            dialog.setOnCancelListener(this);
1896            dialog.setOnDismissListener(this);
1897            dialog.setOnShowListener(this);
1898
1899            return dialog;
1900        }
1901
1902        public void onCancel(DialogInterface dialog) {
1903            mWaitingForResult = false;
1904            cleanup();
1905        }
1906
1907        public void onDismiss(DialogInterface dialog) {
1908        }
1909
1910        private void cleanup() {
1911            dismissDialog(DIALOG_CREATE_SHORTCUT);
1912        }
1913
1914        /**
1915         * Handle the action clicked in the "Add to home" dialog.
1916         */
1917        public void onClick(DialogInterface dialog, int which) {
1918            Resources res = getResources();
1919            cleanup();
1920
1921            switch (which) {
1922                case AddAdapter.ITEM_SHORTCUT: {
1923                    // Insert extra item to handle picking application
1924                    pickShortcut(REQUEST_PICK_SHORTCUT, R.string.title_select_shortcut);
1925                    break;
1926                }
1927
1928                case AddAdapter.ITEM_APPWIDGET: {
1929                    int appWidgetId = Launcher.this.mAppWidgetHost.allocateAppWidgetId();
1930
1931                    Intent pickIntent = new Intent(AppWidgetManager.ACTION_APPWIDGET_PICK);
1932                    pickIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
1933                    // add the search widget
1934                    ArrayList<AppWidgetProviderInfo> customInfo =
1935                            new ArrayList<AppWidgetProviderInfo>();
1936                    AppWidgetProviderInfo info = new AppWidgetProviderInfo();
1937                    info.provider = new ComponentName(getPackageName(), "XXX.YYY");
1938                    info.label = getString(R.string.group_search);
1939                    info.icon = R.drawable.ic_search_widget;
1940                    customInfo.add(info);
1941                    pickIntent.putParcelableArrayListExtra(
1942                            AppWidgetManager.EXTRA_CUSTOM_INFO, customInfo);
1943                    ArrayList<Bundle> customExtras = new ArrayList<Bundle>();
1944                    Bundle b = new Bundle();
1945                    b.putString(EXTRA_CUSTOM_WIDGET, SEARCH_WIDGET);
1946                    customExtras.add(b);
1947                    pickIntent.putParcelableArrayListExtra(
1948                            AppWidgetManager.EXTRA_CUSTOM_EXTRAS, customExtras);
1949                    // start the pick activity
1950                    startActivityForResult(pickIntent, REQUEST_PICK_APPWIDGET);
1951                    break;
1952                }
1953
1954                case AddAdapter.ITEM_LIVE_FOLDER: {
1955                    // Insert extra item to handle inserting folder
1956                    Bundle bundle = new Bundle();
1957
1958                    ArrayList<String> shortcutNames = new ArrayList<String>();
1959                    shortcutNames.add(res.getString(R.string.group_folder));
1960                    bundle.putStringArrayList(Intent.EXTRA_SHORTCUT_NAME, shortcutNames);
1961
1962                    ArrayList<ShortcutIconResource> shortcutIcons =
1963                            new ArrayList<ShortcutIconResource>();
1964                    shortcutIcons.add(ShortcutIconResource.fromContext(Launcher.this,
1965                            R.drawable.ic_launcher_folder));
1966                    bundle.putParcelableArrayList(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, shortcutIcons);
1967
1968                    Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1969                    pickIntent.putExtra(Intent.EXTRA_INTENT,
1970                            new Intent(LiveFolders.ACTION_CREATE_LIVE_FOLDER));
1971                    pickIntent.putExtra(Intent.EXTRA_TITLE,
1972                            getText(R.string.title_select_live_folder));
1973                    pickIntent.putExtras(bundle);
1974
1975                    startActivityForResult(pickIntent, REQUEST_PICK_LIVE_FOLDER);
1976                    break;
1977                }
1978
1979                case AddAdapter.ITEM_WALLPAPER: {
1980                    startWallpaper();
1981                    break;
1982                }
1983            }
1984        }
1985
1986        public void onShow(DialogInterface dialog) {
1987        }
1988    }
1989
1990    /**
1991     * Receives notifications when applications are added/removed.
1992     */
1993    private class CloseSystemDialogsIntentReceiver extends BroadcastReceiver {
1994        @Override
1995        public void onReceive(Context context, Intent intent) {
1996            closeSystemDialogs();
1997        }
1998    }
1999
2000    /**
2001     * Receives notifications whenever the appwidgets are reset.
2002     */
2003    private class AppWidgetResetObserver extends ContentObserver {
2004        public AppWidgetResetObserver() {
2005            super(new Handler());
2006        }
2007
2008        @Override
2009        public void onChange(boolean selfChange) {
2010            onAppWidgetReset();
2011        }
2012    }
2013
2014    /**
2015     * Implementation of the method from LauncherModel.Callbacks.
2016     */
2017    public int getCurrentWorkspaceScreen() {
2018        return mWorkspace.getCurrentScreen();
2019    }
2020
2021    /**
2022     * Refreshes the shortcuts shown on the workspace.
2023     *
2024     * Implementation of the method from LauncherModel.Callbacks.
2025     */
2026    public void startBinding() {
2027        final Workspace workspace = mWorkspace;
2028        int count = workspace.getChildCount();
2029        for (int i = 0; i < count; i++) {
2030            // Use removeAllViewsInLayout() to avoid an extra requestLayout() and invalidate().
2031            ((ViewGroup) workspace.getChildAt(i)).removeAllViewsInLayout();
2032        }
2033
2034        if (DEBUG_USER_INTERFACE) {
2035            android.widget.Button finishButton = new android.widget.Button(this);
2036            finishButton.setText("Finish");
2037            workspace.addInScreen(finishButton, 1, 0, 0, 1, 1);
2038
2039            finishButton.setOnClickListener(new android.widget.Button.OnClickListener() {
2040                public void onClick(View v) {
2041                    finish();
2042                }
2043            });
2044        }
2045    }
2046
2047    /**
2048     * Bind the items start-end from the list.
2049     *
2050     * Implementation of the method from LauncherModel.Callbacks.
2051     */
2052    public void bindItems(ArrayList<ItemInfo> shortcuts, int start, int end) {
2053
2054        final Workspace workspace = mWorkspace;
2055
2056        for (int i=start; i<end; i++) {
2057            final ItemInfo item = shortcuts.get(i);
2058            mDesktopItems.add(item);
2059            switch (item.itemType) {
2060                case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION:
2061                case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
2062                    final View shortcut = createShortcut((ApplicationInfo) item);
2063                    workspace.addInScreen(shortcut, item.screen, item.cellX, item.cellY, 1, 1,
2064                            false);
2065                    break;
2066                case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER:
2067                    final FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon, this,
2068                            (ViewGroup) workspace.getChildAt(workspace.getCurrentScreen()),
2069                            (UserFolderInfo) item);
2070                    workspace.addInScreen(newFolder, item.screen, item.cellX, item.cellY, 1, 1,
2071                            false);
2072                    break;
2073                case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER:
2074                    final FolderIcon newLiveFolder = LiveFolderIcon.fromXml(
2075                            R.layout.live_folder_icon, this,
2076                            (ViewGroup) workspace.getChildAt(workspace.getCurrentScreen()),
2077                            (LiveFolderInfo) item);
2078                    workspace.addInScreen(newLiveFolder, item.screen, item.cellX, item.cellY, 1, 1,
2079                            false);
2080                    break;
2081                case LauncherSettings.Favorites.ITEM_TYPE_WIDGET_SEARCH:
2082                    final int screen = workspace.getCurrentScreen();
2083                    final View view = mInflater.inflate(R.layout.widget_search,
2084                            (ViewGroup) workspace.getChildAt(screen), false);
2085
2086                    Search search = (Search) view.findViewById(R.id.widget_search);
2087                    search.setLauncher(this);
2088
2089                    final Widget widget = (Widget) item;
2090                    view.setTag(widget);
2091
2092                    workspace.addWidget(view, widget, false);
2093                    break;
2094            }
2095        }
2096
2097        workspace.requestLayout();
2098    }
2099
2100    /**
2101     * Implementation of the method from LauncherModel.Callbacks.
2102     */
2103    public void bindFolders(HashMap<Long, FolderInfo> folders) {
2104        mFolders.clear();
2105        mFolders.putAll(folders);
2106    }
2107
2108    /**
2109     * Add the views for a widget to the workspace.
2110     *
2111     * Implementation of the method from LauncherModel.Callbacks.
2112     */
2113    public void bindAppWidget(LauncherAppWidgetInfo item) {
2114        final Workspace workspace = mWorkspace;
2115
2116        final int appWidgetId = item.appWidgetId;
2117        final AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
2118        item.hostView = mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
2119
2120        item.hostView.setAppWidget(appWidgetId, appWidgetInfo);
2121        item.hostView.setTag(item);
2122
2123        workspace.addInScreen(item.hostView, item.screen, item.cellX,
2124                item.cellY, item.spanX, item.spanY, false);
2125
2126        workspace.requestLayout();
2127
2128        mDesktopItems.add(item);
2129    }
2130
2131    /**
2132     * Callback saying that there aren't any more items to bind.
2133     *
2134     * Implementation of the method from LauncherModel.Callbacks.
2135     */
2136    public void finishBindingItems() {
2137        if (mSavedState != null) {
2138            if (!mWorkspace.hasFocus()) {
2139                mWorkspace.getChildAt(mWorkspace.getCurrentScreen()).requestFocus();
2140            }
2141
2142            final long[] userFolders = mSavedState.getLongArray(RUNTIME_STATE_USER_FOLDERS);
2143            if (userFolders != null) {
2144                for (long folderId : userFolders) {
2145                    final FolderInfo info = mFolders.get(folderId);
2146                    if (info != null) {
2147                        openFolder(info);
2148                    }
2149                }
2150                final Folder openFolder = mWorkspace.getOpenFolder();
2151                if (openFolder != null) {
2152                    openFolder.requestFocus();
2153                }
2154            }
2155
2156            mSavedState = null;
2157        }
2158
2159        if (mSavedInstanceState != null) {
2160            super.onRestoreInstanceState(mSavedInstanceState);
2161            mSavedInstanceState = null;
2162        }
2163
2164        mWorkspaceLoading = false;
2165    }
2166
2167    /**
2168     * Add the icons for all apps.
2169     *
2170     * Implementation of the method from LauncherModel.Callbacks.
2171     */
2172    public void bindAllApplications(ArrayList<ApplicationInfo> apps) {
2173        mAllAppsGrid.setApps(apps);
2174    }
2175
2176    /**
2177     * A package was installed.
2178     *
2179     * Implementation of the method from LauncherModel.Callbacks.
2180     */
2181    public void bindPackageAdded(ArrayList<ApplicationInfo> apps) {
2182        removeDialog(DIALOG_CREATE_SHORTCUT);
2183        mAllAppsGrid.addApps(apps);
2184    }
2185
2186    /**
2187     * A package was updated.
2188     *
2189     * Implementation of the method from LauncherModel.Callbacks.
2190     */
2191    public void bindPackageUpdated(String packageName, ArrayList<ApplicationInfo> apps) {
2192        removeDialog(DIALOG_CREATE_SHORTCUT);
2193        mWorkspace.updateShortcutsForPackage(packageName);
2194    }
2195
2196    /**
2197     * A package was uninstalled.
2198     *
2199     * Implementation of the method from LauncherModel.Callbacks.
2200     */
2201    public void bindPackageRemoved(String packageName, ArrayList<ApplicationInfo> apps) {
2202        removeDialog(DIALOG_CREATE_SHORTCUT);
2203        mWorkspace.removeShortcutsForPackage(packageName);
2204        mAllAppsGrid.removeApps(apps);
2205    }
2206
2207    /**
2208     * Prints out out state for debugging.
2209     */
2210    public void dumpState() {
2211        Log.d(TAG, "BEGIN launcher2 dump state for launcher " + this);
2212        Log.d(TAG, "mSavedState=" + mSavedState);
2213        Log.d(TAG, "mIsNewIntent=" + mIsNewIntent);
2214        Log.d(TAG, "mWorkspaceLoading=" + mWorkspaceLoading);
2215        Log.d(TAG, "mRestoring=" + mRestoring);
2216        Log.d(TAG, "mWaitingForResult=" + mWaitingForResult);
2217        Log.d(TAG, "mSavedInstanceState=" + mSavedInstanceState);
2218        Log.d(TAG, "mDesktopItems.size=" + mDesktopItems.size());
2219        Log.d(TAG, "mFolders.size=" + mFolders.size());
2220        mModel.dumpState();
2221        mAllAppsGrid.dumpState();
2222        Log.d(TAG, "END launcher2 dump state");
2223    }
2224}
2225