Launcher.java revision a5902524d4403885eb4c50360bf3465c6be796ef 
1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.launcher2;
18
19import android.app.Activity;
20import android.app.AlertDialog;
21import android.app.Application;
22import android.app.Dialog;
23import android.app.ISearchManager;
24import android.app.IWallpaperService;
25import android.app.SearchManager;
26import android.app.StatusBarManager;
27import android.content.ActivityNotFoundException;
28import android.content.BroadcastReceiver;
29import android.content.ComponentName;
30import android.content.ContentResolver;
31import android.content.Context;
32import android.content.DialogInterface;
33import android.content.Intent;
34import android.content.IntentFilter;
35import android.content.Intent.ShortcutIconResource;
36import android.content.pm.ActivityInfo;
37import android.content.pm.PackageManager;
38import android.content.pm.PackageManager.NameNotFoundException;
39import android.content.res.Configuration;
40import android.content.res.Resources;
41import android.database.ContentObserver;
42import android.graphics.Bitmap;
43import android.graphics.Rect;
44import android.graphics.drawable.BitmapDrawable;
45import android.graphics.drawable.Drawable;
46import android.graphics.drawable.TransitionDrawable;
47import android.os.Bundle;
48import android.os.Handler;
49import android.os.IBinder;
50import android.os.Looper;
51import android.os.Message;
52import android.os.MessageQueue;
53import android.os.Parcelable;
54import android.os.RemoteException;
55import android.os.ServiceManager;
56import android.provider.LiveFolders;
57import android.text.Selection;
58import android.text.SpannableStringBuilder;
59import android.text.TextUtils;
60import android.text.method.TextKeyListener;
61import static android.util.Log.*;
62import android.view.Display;
63import android.view.KeyEvent;
64import android.view.LayoutInflater;
65import android.view.Menu;
66import android.view.MenuItem;
67import android.view.View;
68import android.view.ViewGroup;
69import android.view.View.OnLongClickListener;
70import android.view.inputmethod.InputMethodManager;
71import android.widget.EditText;
72import android.widget.GridView;
73import android.widget.SlidingDrawer;
74import android.widget.TextView;
75import android.widget.Toast;
76import android.appwidget.AppWidgetManager;
77import android.appwidget.AppWidgetProviderInfo;
78
79import java.lang.ref.WeakReference;
80import java.util.ArrayList;
81import java.util.LinkedList;
82import java.io.DataOutputStream;
83import java.io.FileNotFoundException;
84import java.io.IOException;
85import java.io.DataInputStream;
86
87/**
88 * Default launcher application.
89 */
90public final class Launcher extends Activity implements View.OnClickListener, OnLongClickListener {
91    static final String LOG_TAG = "Launcher";
92    static final boolean LOGD = false;
93
94    private static final boolean PROFILE_STARTUP = false;
95    private static final boolean PROFILE_DRAWER = false;
96    private static final boolean PROFILE_ROTATE = false;
97    private static final boolean DEBUG_USER_INTERFACE = false;
98
99    private static final int WALLPAPER_SCREENS_SPAN = 2;
100
101    private static final int MENU_GROUP_ADD = 1;
102    private static final int MENU_ADD = Menu.FIRST + 1;
103    private static final int MENU_WALLPAPER_SETTINGS = MENU_ADD + 1;
104    private static final int MENU_SEARCH = MENU_WALLPAPER_SETTINGS + 1;
105    private static final int MENU_NOTIFICATIONS = MENU_SEARCH + 1;
106    private static final int MENU_SETTINGS = MENU_NOTIFICATIONS + 1;
107
108    private static final int REQUEST_CREATE_SHORTCUT = 1;
109    private static final int REQUEST_CREATE_LIVE_FOLDER = 4;
110    private static final int REQUEST_CREATE_APPWIDGET = 5;
111    private static final int REQUEST_PICK_APPLICATION = 6;
112    private static final int REQUEST_PICK_SHORTCUT = 7;
113    private static final int REQUEST_PICK_LIVE_FOLDER = 8;
114    private static final int REQUEST_PICK_APPWIDGET = 9;
115
116    static final String EXTRA_SHORTCUT_DUPLICATE = "duplicate";
117
118    static final String EXTRA_CUSTOM_WIDGET = "custom_widget";
119    static final String SEARCH_WIDGET = "search_widget";
120
121    static final int SCREEN_COUNT = 3;
122    static final int DEFAULT_SCREN = 1;
123    static final int NUMBER_CELLS_X = 4;
124    static final int NUMBER_CELLS_Y = 4;
125
126    private static final int DIALOG_CREATE_SHORTCUT = 1;
127    static final int DIALOG_RENAME_FOLDER = 2;
128
129    private static final String PREFERENCES = "launcher.preferences";
130
131    // Type: int
132    private static final String RUNTIME_STATE_CURRENT_SCREEN = "launcher.current_screen";
133    // Type: boolean
134    private static final String RUNTIME_STATE_ALL_APPS_FOLDER = "launcher.all_apps_folder";
135    // Type: long
136    private static final String RUNTIME_STATE_USER_FOLDERS = "launcher.user_folder";
137    // Type: int
138    private static final String RUNTIME_STATE_PENDING_ADD_SCREEN = "launcher.add_screen";
139    // Type: int
140    private static final String RUNTIME_STATE_PENDING_ADD_CELL_X = "launcher.add_cellX";
141    // Type: int
142    private static final String RUNTIME_STATE_PENDING_ADD_CELL_Y = "launcher.add_cellY";
143    // Type: int
144    private static final String RUNTIME_STATE_PENDING_ADD_SPAN_X = "launcher.add_spanX";
145    // Type: int
146    private static final String RUNTIME_STATE_PENDING_ADD_SPAN_Y = "launcher.add_spanY";
147    // Type: int
148    private static final String RUNTIME_STATE_PENDING_ADD_COUNT_X = "launcher.add_countX";
149    // Type: int
150    private static final String RUNTIME_STATE_PENDING_ADD_COUNT_Y = "launcher.add_countY";
151    // Type: int[]
152    private static final String RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS = "launcher.add_occupied_cells";
153    // Type: boolean
154    private static final String RUNTIME_STATE_PENDING_FOLDER_RENAME = "launcher.rename_folder";
155    // Type: long
156    private static final String RUNTIME_STATE_PENDING_FOLDER_RENAME_ID = "launcher.rename_folder_id";
157
158    private static final LauncherModel sModel = new LauncherModel();
159
160    private static Bitmap sWallpaper;
161
162    private static final Object sLock = new Object();
163    private static int sScreen = DEFAULT_SCREN;
164
165    private static WallpaperIntentReceiver sWallpaperReceiver;
166
167    private final BroadcastReceiver mApplicationsReceiver = new ApplicationsIntentReceiver();
168    private final ContentObserver mObserver = new FavoritesChangeObserver();
169
170    private LayoutInflater mInflater;
171
172    private DragLayer mDragLayer;
173    private Workspace mWorkspace;
174
175    private AppWidgetManager mAppWidgetManager;
176    private LauncherAppWidgetHost mAppWidgetHost;
177
178    static final int APPWIDGET_HOST_ID = 1024;
179
180    private CellLayout.CellInfo mAddItemCellInfo;
181    private CellLayout.CellInfo mMenuAddInfo;
182    private final int[] mCellCoordinates = new int[2];
183    private FolderInfo mFolderInfo;
184
185    private SlidingDrawer mDrawer;
186    private TransitionDrawable mHandleIcon;
187    private HandleView mHandleView;
188    private AllAppsGridView mAllAppsGrid;
189
190    private boolean mDesktopLocked = true;
191    private Bundle mSavedState;
192
193    private SpannableStringBuilder mDefaultKeySsb = null;
194
195    private boolean mDestroyed;
196
197    private boolean mIsNewIntent;
198
199    private boolean mRestoring;
200    private boolean mWaitingForResult;
201    private boolean mLocaleChanged;
202
203    private boolean mHomeDown;
204    private boolean mBackDown;
205
206    private Bundle mSavedInstanceState;
207
208    private DesktopBinder mBinder;
209
210    @Override
211    protected void onCreate(Bundle savedInstanceState) {
212        super.onCreate(savedInstanceState);
213        mInflater = getLayoutInflater();
214
215        mAppWidgetManager = AppWidgetManager.getInstance(this);
216
217        mAppWidgetHost = new LauncherAppWidgetHost(this, APPWIDGET_HOST_ID);
218        mAppWidgetHost.startListening();
219
220        if (PROFILE_STARTUP) {
221            android.os.Debug.startMethodTracing("/sdcard/launcher");
222        }
223
224        checkForLocaleChange();
225        setWallpaperDimension();
226
227        setContentView(R.layout.launcher);
228        setupViews();
229
230        registerIntentReceivers();
231        registerContentObservers();
232
233        mSavedState = savedInstanceState;
234        restoreState(mSavedState);
235
236        if (PROFILE_STARTUP) {
237            android.os.Debug.stopMethodTracing();
238        }
239
240        if (!mRestoring) {
241            startLoaders();
242        }
243
244        // For handling default keys
245        mDefaultKeySsb = new SpannableStringBuilder();
246        Selection.setSelection(mDefaultKeySsb, 0);
247    }
248
249    private void checkForLocaleChange() {
250        final LocaleConfiguration localeConfiguration = new LocaleConfiguration();
251        readConfiguration(this, localeConfiguration);
252
253        final Configuration configuration = getResources().getConfiguration();
254
255        final String previousLocale = localeConfiguration.locale;
256        final String locale = configuration.locale.toString();
257
258        final int previousMcc = localeConfiguration.mcc;
259        final int mcc = configuration.mcc;
260
261        final int previousMnc = localeConfiguration.mnc;
262        final int mnc = configuration.mnc;
263
264        mLocaleChanged = !locale.equals(previousLocale) || mcc != previousMcc || mnc != previousMnc;
265
266        if (mLocaleChanged) {
267            localeConfiguration.locale = locale;
268            localeConfiguration.mcc = mcc;
269            localeConfiguration.mnc = mnc;
270
271            writeConfiguration(this, localeConfiguration);
272        }
273    }
274
275    private static class LocaleConfiguration {
276        public String locale;
277        public int mcc = -1;
278        public int mnc = -1;
279    }
280
281    private static void readConfiguration(Context context, LocaleConfiguration configuration) {
282        DataInputStream in = null;
283        try {
284            in = new DataInputStream(context.openFileInput(PREFERENCES));
285            configuration.locale = in.readUTF();
286            configuration.mcc = in.readInt();
287            configuration.mnc = in.readInt();
288        } catch (FileNotFoundException e) {
289            // Ignore
290        } catch (IOException e) {
291            // Ignore
292        } finally {
293            if (in != null) {
294                try {
295                    in.close();
296                } catch (IOException e) {
297                    // Ignore
298                }
299            }
300        }
301    }
302
303    private static void writeConfiguration(Context context, LocaleConfiguration configuration) {
304        DataOutputStream out = null;
305        try {
306            out = new DataOutputStream(context.openFileOutput(PREFERENCES, MODE_PRIVATE));
307            out.writeUTF(configuration.locale);
308            out.writeInt(configuration.mcc);
309            out.writeInt(configuration.mnc);
310            out.flush();
311        } catch (FileNotFoundException e) {
312            // Ignore
313        } catch (IOException e) {
314            //noinspection ResultOfMethodCallIgnored
315            context.getFileStreamPath(PREFERENCES).delete();
316        } finally {
317            if (out != null) {
318                try {
319                    out.close();
320                } catch (IOException e) {
321                    // Ignore
322                }
323            }
324        }
325    }
326
327    static int getScreen() {
328        synchronized (sLock) {
329            return sScreen;
330        }
331    }
332
333    static void setScreen(int screen) {
334        synchronized (sLock) {
335            sScreen = screen;
336        }
337    }
338
339    private void startLoaders() {
340        boolean loadApplications = sModel.loadApplications(true, this, mLocaleChanged);
341        sModel.loadUserItems(!mLocaleChanged, this, mLocaleChanged, loadApplications);
342
343        mRestoring = false;
344    }
345
346    private void setWallpaperDimension() {
347        IBinder binder = ServiceManager.getService(WALLPAPER_SERVICE);
348        IWallpaperService wallpaperService = IWallpaperService.Stub.asInterface(binder);
349
350        Display display = getWindowManager().getDefaultDisplay();
351        boolean isPortrait = display.getWidth() < display.getHeight();
352
353        final int width = isPortrait ? display.getWidth() : display.getHeight();
354        final int height = isPortrait ? display.getHeight() : display.getWidth();
355        try {
356            wallpaperService.setDimensionHints(width * WALLPAPER_SCREENS_SPAN, height);
357        } catch (RemoteException e) {
358            // System is dead!
359        }
360    }
361
362    @Override
363    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
364        mWaitingForResult = false;
365
366        // The pattern used here is that a user PICKs a specific application,
367        // which, depending on the target, might need to CREATE the actual target.
368
369        // For example, the user would PICK_SHORTCUT for "Music playlist", and we
370        // launch over to the Music app to actually CREATE_SHORTCUT.
371
372        if (resultCode == RESULT_OK && mAddItemCellInfo != null) {
373            switch (requestCode) {
374                case REQUEST_PICK_APPLICATION:
375                    completeAddApplication(this, data, mAddItemCellInfo, !mDesktopLocked);
376                    break;
377                case REQUEST_PICK_SHORTCUT:
378                    processShortcut(data, REQUEST_PICK_APPLICATION, REQUEST_CREATE_SHORTCUT);
379                    break;
380                case REQUEST_CREATE_SHORTCUT:
381                    completeAddShortcut(data, mAddItemCellInfo, !mDesktopLocked);
382                    break;
383                case REQUEST_PICK_LIVE_FOLDER:
384                    addLiveFolder(data);
385                    break;
386                case REQUEST_CREATE_LIVE_FOLDER:
387                    completeAddLiveFolder(data, mAddItemCellInfo, !mDesktopLocked);
388                    break;
389                case REQUEST_PICK_APPWIDGET:
390                    addAppWidget(data);
391                    break;
392                case REQUEST_CREATE_APPWIDGET:
393                    completeAddAppWidget(data, mAddItemCellInfo, !mDesktopLocked);
394                    break;
395            }
396        } else if (requestCode == REQUEST_PICK_APPWIDGET &&
397                resultCode == RESULT_CANCELED && data != null) {
398            // Clean up the appWidgetId if we canceled
399            int appWidgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
400            if (appWidgetId != -1) {
401                mAppWidgetHost.deleteAppWidgetId(appWidgetId);
402            }
403        }
404    }
405
406    @Override
407    protected void onResume() {
408        super.onResume();
409
410        if (mRestoring) {
411            startLoaders();
412        }
413
414        // If this was a new intent (i.e., the mIsNewIntent flag got set to true by
415        // onNewIntent), then close the search dialog if needed, because it probably
416        // came from the user pressing 'home' (rather than, for example, pressing 'back').
417        if (mIsNewIntent) {
418            // Post to a handler so that this happens after the search dialog tries to open
419            // itself again.
420            mWorkspace.post(new Runnable() {
421                public void run() {
422                    ISearchManager searchManagerService = ISearchManager.Stub.asInterface(
423                            ServiceManager.getService(Context.SEARCH_SERVICE));
424                    try {
425                        searchManagerService.stopSearch();
426                    } catch (RemoteException e) {
427                        e(LOG_TAG, "error stopping search", e);
428                    }
429                }
430            });
431        }
432
433        mIsNewIntent = false;
434    }
435
436    @Override
437    protected void onPause() {
438        super.onPause();
439        closeDrawer(false);
440    }
441
442    @Override
443    public Object onRetainNonConfigurationInstance() {
444        // Flag any binder to stop early before switching
445        if (mBinder != null) {
446            mBinder.mTerminate = true;
447        }
448
449        if (PROFILE_ROTATE) {
450            android.os.Debug.startMethodTracing("/sdcard/launcher-rotate");
451        }
452        return null;
453    }
454
455    private boolean acceptFilter() {
456        final InputMethodManager inputManager = (InputMethodManager)
457                getSystemService(Context.INPUT_METHOD_SERVICE);
458        return !inputManager.isFullscreenMode();
459    }
460
461    @Override
462    public boolean onKeyDown(int keyCode, KeyEvent event) {
463        boolean handled = super.onKeyDown(keyCode, event);
464        if (!handled && acceptFilter() && keyCode != KeyEvent.KEYCODE_ENTER) {
465            boolean gotKey = TextKeyListener.getInstance().onKeyDown(mWorkspace, mDefaultKeySsb,
466                    keyCode, event);
467            if (gotKey && mDefaultKeySsb != null && mDefaultKeySsb.length() > 0) {
468                // something usable has been typed - start a search
469                // the typed text will be retrieved and cleared by
470                // showSearchDialog()
471                // If there are multiple keystrokes before the search dialog takes focus,
472                // onSearchRequested() will be called for every keystroke,
473                // but it is idempotent, so it's fine.
474                return onSearchRequested();
475            }
476        }
477
478        return handled;
479    }
480
481    private String getTypedText() {
482        return mDefaultKeySsb.toString();
483    }
484
485    private void clearTypedText() {
486        mDefaultKeySsb.clear();
487        mDefaultKeySsb.clearSpans();
488        Selection.setSelection(mDefaultKeySsb, 0);
489    }
490
491    /**
492     * Restores the previous state, if it exists.
493     *
494     * @param savedState The previous state.
495     */
496    private void restoreState(Bundle savedState) {
497        if (savedState == null) {
498            return;
499        }
500
501        final int currentScreen = savedState.getInt(RUNTIME_STATE_CURRENT_SCREEN, -1);
502        if (currentScreen > -1) {
503            mWorkspace.setCurrentScreen(currentScreen);
504        }
505
506        final int addScreen = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SCREEN, -1);
507        if (addScreen > -1) {
508            mAddItemCellInfo = new CellLayout.CellInfo();
509            final CellLayout.CellInfo addItemCellInfo = mAddItemCellInfo;
510            addItemCellInfo.valid = true;
511            addItemCellInfo.screen = addScreen;
512            addItemCellInfo.cellX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_X);
513            addItemCellInfo.cellY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_Y);
514            addItemCellInfo.spanX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_X);
515            addItemCellInfo.spanY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y);
516            addItemCellInfo.findVacantCellsFromOccupied(
517                    savedState.getBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS),
518                    savedState.getInt(RUNTIME_STATE_PENDING_ADD_COUNT_X),
519                    savedState.getInt(RUNTIME_STATE_PENDING_ADD_COUNT_Y));
520            mRestoring = true;
521        }
522
523        boolean renameFolder = savedState.getBoolean(RUNTIME_STATE_PENDING_FOLDER_RENAME, false);
524        if (renameFolder) {
525            long id = savedState.getLong(RUNTIME_STATE_PENDING_FOLDER_RENAME_ID);
526            mFolderInfo = sModel.getFolderById(this, id);
527            mRestoring = true;
528        }
529    }
530
531    /**
532     * Finds all the views we need and configure them properly.
533     */
534    private void setupViews() {
535        mDragLayer = (DragLayer) findViewById(R.id.drag_layer);
536        final DragLayer dragLayer = mDragLayer;
537
538        mWorkspace = (Workspace) dragLayer.findViewById(R.id.workspace);
539        final Workspace workspace = mWorkspace;
540
541        mDrawer = (SlidingDrawer) dragLayer.findViewById(R.id.drawer);
542        final SlidingDrawer drawer = mDrawer;
543
544        mAllAppsGrid = (AllAppsGridView) drawer.getContent();
545        final AllAppsGridView grid = mAllAppsGrid;
546
547        final DeleteZone deleteZone = (DeleteZone) dragLayer.findViewById(R.id.delete_zone);
548
549        mHandleView = (HandleView) drawer.findViewById(R.id.all_apps);
550        mHandleView.setLauncher(this);
551        mHandleIcon = (TransitionDrawable) mHandleView.getDrawable();
552        mHandleIcon.setCrossFadeEnabled(true);
553
554        drawer.lock();
555        final DrawerManager drawerManager = new DrawerManager();
556        drawer.setOnDrawerOpenListener(drawerManager);
557        drawer.setOnDrawerCloseListener(drawerManager);
558        drawer.setOnDrawerScrollListener(drawerManager);
559
560        grid.setTextFilterEnabled(false);
561        grid.setDragger(dragLayer);
562        grid.setLauncher(this);
563
564        workspace.setOnLongClickListener(this);
565        workspace.setDragger(dragLayer);
566        workspace.setLauncher(this);
567        loadWallpaper();
568
569        deleteZone.setLauncher(this);
570        deleteZone.setDragController(dragLayer);
571        deleteZone.setHandle(mHandleView);
572
573        dragLayer.setIgnoredDropTarget(grid);
574        dragLayer.setDragScoller(workspace);
575        dragLayer.setDragListener(deleteZone);
576    }
577
578    /**
579     * Creates a view representing a shortcut.
580     *
581     * @param info The data structure describing the shortcut.
582     *
583     * @return A View inflated from R.layout.application.
584     */
585    View createShortcut(ApplicationInfo info) {
586        return createShortcut(R.layout.application,
587                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), info);
588    }
589
590    /**
591     * Creates a view representing a shortcut inflated from the specified resource.
592     *
593     * @param layoutResId The id of the XML layout used to create the shortcut.
594     * @param parent The group the shortcut belongs to.
595     * @param info The data structure describing the shortcut.
596     *
597     * @return A View inflated from layoutResId.
598     */
599    View createShortcut(int layoutResId, ViewGroup parent, ApplicationInfo info) {
600        TextView favorite = (TextView) mInflater.inflate(layoutResId, parent, false);
601
602        if (!info.filtered) {
603            info.icon = Utilities.createIconThumbnail(info.icon, this);
604            info.filtered = true;
605        }
606
607        favorite.setCompoundDrawablesWithIntrinsicBounds(null, info.icon, null, null);
608        favorite.setText(info.title);
609        favorite.setTag(info);
610        favorite.setOnClickListener(this);
611
612        return favorite;
613    }
614
615    /**
616     * Add an application shortcut to the workspace.
617     *
618     * @param data The intent describing the application.
619     * @param cellInfo The position on screen where to create the shortcut.
620     */
621    void completeAddApplication(Context context, Intent data, CellLayout.CellInfo cellInfo,
622            boolean insertAtFirst) {
623        cellInfo.screen = mWorkspace.getCurrentScreen();
624        if (!findSingleSlot(cellInfo)) return;
625
626        final ApplicationInfo info = infoFromApplicationIntent(context, data);
627        if (info != null) {
628            mWorkspace.addApplicationShortcut(info, cellInfo, insertAtFirst);
629        }
630    }
631
632    private static ApplicationInfo infoFromApplicationIntent(Context context, Intent data) {
633        ComponentName component = data.getComponent();
634        PackageManager packageManager = context.getPackageManager();
635        ActivityInfo activityInfo = null;
636        try {
637            activityInfo = packageManager.getActivityInfo(component, 0 /* no flags */);
638        } catch (NameNotFoundException e) {
639            e(LOG_TAG, "Couldn't find ActivityInfo for selected application", e);
640        }
641
642        if (activityInfo != null) {
643            ApplicationInfo itemInfo = new ApplicationInfo();
644
645            itemInfo.title = activityInfo.loadLabel(packageManager);
646            if (itemInfo.title == null) {
647                itemInfo.title = activityInfo.name;
648            }
649
650            itemInfo.setActivity(component, Intent.FLAG_ACTIVITY_NEW_TASK |
651                    Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
652            itemInfo.icon = activityInfo.loadIcon(packageManager);
653            itemInfo.container = ItemInfo.NO_ID;
654
655            return itemInfo;
656        }
657
658        return null;
659    }
660
661    /**
662     * Add a shortcut to the workspace.
663     *
664     * @param data The intent describing the shortcut.
665     * @param cellInfo The position on screen where to create the shortcut.
666     * @param insertAtFirst
667     */
668    private void completeAddShortcut(Intent data, CellLayout.CellInfo cellInfo,
669            boolean insertAtFirst) {
670        cellInfo.screen = mWorkspace.getCurrentScreen();
671        if (!findSingleSlot(cellInfo)) return;
672
673        final ApplicationInfo info = addShortcut(this, data, cellInfo, false);
674
675        if (!mRestoring) {
676            sModel.addDesktopItem(info);
677
678            final View view = createShortcut(info);
679            mWorkspace.addInCurrentScreen(view, cellInfo.cellX, cellInfo.cellY, 1, 1, insertAtFirst);
680        } else if (sModel.isDesktopLoaded()) {
681            sModel.addDesktopItem(info);
682        }
683    }
684
685
686    /**
687     * Add a widget to the workspace.
688     *
689     * @param data The intent describing the appWidgetId.
690     * @param cellInfo The position on screen where to create the widget.
691     */
692    private void completeAddAppWidget(Intent data, CellLayout.CellInfo cellInfo,
693            boolean insertAtFirst) {
694
695        Bundle extras = data.getExtras();
696        int appWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
697
698        d(LOG_TAG, "dumping extras content="+extras.toString());
699
700        AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
701
702        // Calculate the grid spans needed to fit this widget
703        CellLayout layout = (CellLayout) mWorkspace.getChildAt(cellInfo.screen);
704        int[] spans = layout.rectToCell(appWidgetInfo.minWidth, appWidgetInfo.minHeight);
705
706        // Try finding open space on Launcher screen
707        final int[] xy = mCellCoordinates;
708        if (!findSlot(cellInfo, xy, spans[0], spans[1])) return;
709
710        // Build Launcher-specific widget info and save to database
711        LauncherAppWidgetInfo launcherInfo = new LauncherAppWidgetInfo(appWidgetId);
712        launcherInfo.spanX = spans[0];
713        launcherInfo.spanY = spans[1];
714
715        LauncherModel.addItemToDatabase(this, launcherInfo,
716                LauncherSettings.Favorites.CONTAINER_DESKTOP,
717                mWorkspace.getCurrentScreen(), xy[0], xy[1], false);
718
719        if (!mRestoring) {
720            sModel.addDesktopAppWidget(launcherInfo);
721
722            // Perform actual inflation because we're live
723            launcherInfo.hostView = mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
724
725            launcherInfo.hostView.setAppWidget(appWidgetId, appWidgetInfo);
726            launcherInfo.hostView.setTag(launcherInfo);
727
728            mWorkspace.addInCurrentScreen(launcherInfo.hostView, xy[0], xy[1],
729                    launcherInfo.spanX, launcherInfo.spanY, insertAtFirst);
730        } else if (sModel.isDesktopLoaded()) {
731            sModel.addDesktopAppWidget(launcherInfo);
732        }
733    }
734
735    public LauncherAppWidgetHost getAppWidgetHost() {
736        return mAppWidgetHost;
737    }
738
739    static ApplicationInfo addShortcut(Context context, Intent data,
740            CellLayout.CellInfo cellInfo, boolean notify) {
741
742        final ApplicationInfo info = infoFromShortcutIntent(context, data);
743        LauncherModel.addItemToDatabase(context, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
744                cellInfo.screen, cellInfo.cellX, cellInfo.cellY, notify);
745
746        return info;
747    }
748
749    private static ApplicationInfo infoFromShortcutIntent(Context context, Intent data) {
750        Intent intent = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_INTENT);
751        String name = data.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
752        Bitmap bitmap = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_ICON);
753
754        Drawable icon = null;
755        boolean filtered = false;
756        boolean customIcon = false;
757        ShortcutIconResource iconResource = null;
758
759        if (bitmap != null) {
760            icon = new FastBitmapDrawable(Utilities.createBitmapThumbnail(bitmap, context));
761            filtered = true;
762            customIcon = true;
763        } else {
764            Parcelable extra = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE);
765            if (extra != null && extra instanceof ShortcutIconResource) {
766                try {
767                    iconResource = (ShortcutIconResource) extra;
768                    final PackageManager packageManager = context.getPackageManager();
769                    Resources resources = packageManager.getResourcesForApplication(
770                            iconResource.packageName);
771                    final int id = resources.getIdentifier(iconResource.resourceName, null, null);
772                    icon = resources.getDrawable(id);
773                } catch (Exception e) {
774                    w(LOG_TAG, "Could not load shortcut icon: " + extra);
775                }
776            }
777        }
778
779        if (icon == null) {
780            icon = context.getPackageManager().getDefaultActivityIcon();
781        }
782
783        final ApplicationInfo info = new ApplicationInfo();
784        info.icon = icon;
785        info.filtered = filtered;
786        info.title = name;
787        info.intent = intent;
788        info.customIcon = customIcon;
789        info.iconResource = iconResource;
790
791        return info;
792    }
793
794    @Override
795    protected void onNewIntent(Intent intent) {
796        super.onNewIntent(intent);
797
798        // Close the menu
799        if (Intent.ACTION_MAIN.equals(intent.getAction())) {
800            getWindow().closeAllPanels();
801
802            // Set this flag so that onResume knows to close the search dialog if it's open,
803            // because this was a new intent (thus a press of 'home' or some such) rather than
804            // for example onResume being called when the user pressed the 'back' button.
805            mIsNewIntent = true;
806
807            try {
808                dismissDialog(DIALOG_CREATE_SHORTCUT);
809                // Unlock the workspace if the dialog was showing
810                mWorkspace.unlock();
811            } catch (Exception e) {
812                // An exception is thrown if the dialog is not visible, which is fine
813            }
814
815            try {
816                dismissDialog(DIALOG_RENAME_FOLDER);
817                // Unlock the workspace if the dialog was showing
818                mWorkspace.unlock();
819            } catch (Exception e) {
820                // An exception is thrown if the dialog is not visible, which is fine
821            }
822
823            if ((intent.getFlags() & Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT) !=
824                    Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT) {
825
826                if (!mWorkspace.isDefaultScreenShowing()) {
827                    mWorkspace.moveToDefaultScreen();
828                }
829
830                closeDrawer();
831
832                final View v = getWindow().peekDecorView();
833                if (v != null && v.getWindowToken() != null) {
834                    InputMethodManager imm = (InputMethodManager)getSystemService(
835                            INPUT_METHOD_SERVICE);
836                    imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
837                }
838            } else {
839                closeDrawer(false);
840            }
841        }
842    }
843
844    @Override
845    protected void onRestoreInstanceState(Bundle savedInstanceState) {
846        // Do not call super here
847        mSavedInstanceState = savedInstanceState;
848    }
849
850    @Override
851    protected void onSaveInstanceState(Bundle outState) {
852        outState.putInt(RUNTIME_STATE_CURRENT_SCREEN, mWorkspace.getCurrentScreen());
853
854        final ArrayList<Folder> folders = mWorkspace.getOpenFolders();
855        if (folders.size() > 0) {
856            final int count = folders.size();
857            long[] ids = new long[count];
858            for (int i = 0; i < count; i++) {
859                final FolderInfo info = folders.get(i).getInfo();
860                ids[i] = info.id;
861            }
862            outState.putLongArray(RUNTIME_STATE_USER_FOLDERS, ids);
863        } else {
864            super.onSaveInstanceState(outState);
865        }
866
867        final boolean isConfigurationChange = getChangingConfigurations() != 0;
868
869        // When the drawer is opened and we are saving the state because of a
870        // configuration change
871        if (mDrawer.isOpened() && isConfigurationChange) {
872            outState.putBoolean(RUNTIME_STATE_ALL_APPS_FOLDER, true);
873        }
874
875        if (mAddItemCellInfo != null && mAddItemCellInfo.valid && mWaitingForResult) {
876            final CellLayout.CellInfo addItemCellInfo = mAddItemCellInfo;
877            final CellLayout layout = (CellLayout) mWorkspace.getChildAt(addItemCellInfo.screen);
878
879            outState.putInt(RUNTIME_STATE_PENDING_ADD_SCREEN, addItemCellInfo.screen);
880            outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_X, addItemCellInfo.cellX);
881            outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_Y, addItemCellInfo.cellY);
882            outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_X, addItemCellInfo.spanX);
883            outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y, addItemCellInfo.spanY);
884            outState.putInt(RUNTIME_STATE_PENDING_ADD_COUNT_X, layout.getCountX());
885            outState.putInt(RUNTIME_STATE_PENDING_ADD_COUNT_Y, layout.getCountY());
886            outState.putBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS,
887                   layout.getOccupiedCells());
888        }
889
890        if (mFolderInfo != null && mWaitingForResult) {
891            outState.putBoolean(RUNTIME_STATE_PENDING_FOLDER_RENAME, true);
892            outState.putLong(RUNTIME_STATE_PENDING_FOLDER_RENAME_ID, mFolderInfo.id);
893        }
894    }
895
896    @Override
897    public void onDestroy() {
898        mDestroyed = true;
899
900        super.onDestroy();
901
902        try {
903            mAppWidgetHost.stopListening();
904        } catch (NullPointerException ex) {
905            w(LOG_TAG, "problem while stopping AppWidgetHost during Launcher destruction", ex);
906        }
907
908        TextKeyListener.getInstance().release();
909
910        mAllAppsGrid.clearTextFilter();
911        mAllAppsGrid.setAdapter(null);
912        sModel.unbind();
913        sModel.abortLoaders();
914
915        getContentResolver().unregisterContentObserver(mObserver);
916        unregisterReceiver(mApplicationsReceiver);
917    }
918
919    @Override
920    public void startActivityForResult(Intent intent, int requestCode) {
921        if (requestCode >= 0) mWaitingForResult = true;
922        super.startActivityForResult(intent, requestCode);
923    }
924
925    @Override
926    public void startSearch(String initialQuery, boolean selectInitialQuery,
927            Bundle appSearchData, boolean globalSearch) {
928
929        closeDrawer(false);
930
931        // Slide the search widget to the top, if it's on the current screen,
932        // otherwise show the search dialog immediately.
933        Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
934        if (searchWidget == null) {
935            showSearchDialog(initialQuery, selectInitialQuery, appSearchData, globalSearch);
936        } else {
937            searchWidget.startSearch(initialQuery, selectInitialQuery, appSearchData, globalSearch);
938            // show the currently typed text in the search widget while sliding
939            searchWidget.setQuery(getTypedText());
940        }
941    }
942
943    /**
944     * Show the search dialog immediately, without changing the search widget.
945     *
946     * @see Activity#startSearch(String, boolean, android.os.Bundle, boolean)
947     */
948    void showSearchDialog(String initialQuery, boolean selectInitialQuery,
949            Bundle appSearchData, boolean globalSearch) {
950
951        if (initialQuery == null) {
952            // Use any text typed in the launcher as the initial query
953            initialQuery = getTypedText();
954            clearTypedText();
955        }
956        if (appSearchData == null) {
957            appSearchData = new Bundle();
958            appSearchData.putString(SearchManager.SOURCE, "launcher-search");
959        }
960
961        final SearchManager searchManager =
962                (SearchManager) getSystemService(Context.SEARCH_SERVICE);
963
964        final Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
965        if (searchWidget != null) {
966            // This gets called when the user leaves the search dialog to go back to
967            // the Launcher.
968            searchManager.setOnCancelListener(new SearchManager.OnCancelListener() {
969                public void onCancel() {
970                    searchManager.setOnCancelListener(null);
971                    stopSearch();
972                }
973            });
974        }
975
976        searchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(),
977            appSearchData, globalSearch);
978    }
979
980    /**
981     * Cancel search dialog if it is open.
982     */
983    void stopSearch() {
984        // Close search dialog
985        SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
986        searchManager.stopSearch();
987        // Restore search widget to its normal position
988        Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
989        if (searchWidget != null) {
990            searchWidget.stopSearch(false);
991        }
992    }
993
994    @Override
995    public boolean onCreateOptionsMenu(Menu menu) {
996        if (mDesktopLocked) return false;
997
998        super.onCreateOptionsMenu(menu);
999        menu.add(MENU_GROUP_ADD, MENU_ADD, 0, R.string.menu_add)
1000                .setIcon(android.R.drawable.ic_menu_add)
1001                .setAlphabeticShortcut('A');
1002        menu.add(0, MENU_WALLPAPER_SETTINGS, 0, R.string.menu_wallpaper)
1003                 .setIcon(android.R.drawable.ic_menu_gallery)
1004                 .setAlphabeticShortcut('W');
1005        menu.add(0, MENU_SEARCH, 0, R.string.menu_search)
1006                .setIcon(android.R.drawable.ic_search_category_default)
1007                .setAlphabeticShortcut(SearchManager.MENU_KEY);
1008        menu.add(0, MENU_NOTIFICATIONS, 0, R.string.menu_notifications)
1009                .setIcon(com.android.internal.R.drawable.ic_menu_notifications)
1010                .setAlphabeticShortcut('N');
1011
1012        final Intent settings = new Intent(android.provider.Settings.ACTION_SETTINGS);
1013        settings.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
1014                Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
1015
1016        menu.add(0, MENU_SETTINGS, 0, R.string.menu_settings)
1017                .setIcon(android.R.drawable.ic_menu_preferences).setAlphabeticShortcut('P')
1018                .setIntent(settings);
1019
1020        return true;
1021    }
1022
1023    @Override
1024    public boolean onPrepareOptionsMenu(Menu menu) {
1025        super.onPrepareOptionsMenu(menu);
1026
1027        mMenuAddInfo = mWorkspace.findAllVacantCells(null);
1028        menu.setGroupEnabled(MENU_GROUP_ADD, mMenuAddInfo != null && mMenuAddInfo.valid);
1029
1030        return true;
1031    }
1032
1033    @Override
1034    public boolean onOptionsItemSelected(MenuItem item) {
1035        switch (item.getItemId()) {
1036            case MENU_ADD:
1037                addItems();
1038                return true;
1039            case MENU_WALLPAPER_SETTINGS:
1040                startWallpaper();
1041                return true;
1042            case MENU_SEARCH:
1043                onSearchRequested();
1044                return true;
1045            case MENU_NOTIFICATIONS:
1046                showNotifications();
1047                return true;
1048        }
1049
1050        return super.onOptionsItemSelected(item);
1051    }
1052
1053    /**
1054     * Indicates that we want global search for this activity by setting the globalSearch
1055     * argument for {@link #startSearch} to true.
1056     */
1057
1058    @Override
1059    public boolean onSearchRequested() {
1060        startSearch(null, false, null, true);
1061        return true;
1062    }
1063
1064    private void addItems() {
1065        showAddDialog(mMenuAddInfo);
1066    }
1067
1068    private void removeShortcutsForPackage(String packageName) {
1069        if (packageName != null && packageName.length() > 0) {
1070            mWorkspace.removeShortcutsForPackage(packageName);
1071        }
1072    }
1073
1074    private void updateShortcutsForPackage(String packageName) {
1075        if (packageName != null && packageName.length() > 0) {
1076            mWorkspace.updateShortcutsForPackage(packageName);
1077        }
1078    }
1079
1080    void addAppWidget(Intent data) {
1081        // TODO: catch bad widget exception when sent
1082        int appWidgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
1083
1084        String customWidget = data.getStringExtra(EXTRA_CUSTOM_WIDGET);
1085        if (SEARCH_WIDGET.equals(customWidget)) {
1086            // We don't need this any more, since this isn't a real app widget.
1087            mAppWidgetHost.deleteAppWidgetId(appWidgetId);
1088            // add the search widget
1089            addSearch();
1090        } else {
1091            AppWidgetProviderInfo appWidget = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
1092
1093            if (appWidget.configure != null) {
1094                // Launch over to configure widget, if needed
1095                Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_CONFIGURE);
1096                intent.setComponent(appWidget.configure);
1097                intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
1098
1099                startActivityForResult(intent, REQUEST_CREATE_APPWIDGET);
1100            } else {
1101                // Otherwise just add it
1102                onActivityResult(REQUEST_CREATE_APPWIDGET, Activity.RESULT_OK, data);
1103            }
1104        }
1105    }
1106
1107    void addSearch() {
1108        final Widget info = Widget.makeSearch();
1109        final CellLayout.CellInfo cellInfo = mAddItemCellInfo;
1110
1111        final int[] xy = mCellCoordinates;
1112        final int spanX = info.spanX;
1113        final int spanY = info.spanY;
1114
1115        if (!findSlot(cellInfo, xy, spanX, spanY)) return;
1116
1117        sModel.addDesktopItem(info);
1118        LauncherModel.addItemToDatabase(this, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
1119        mWorkspace.getCurrentScreen(), xy[0], xy[1], false);
1120
1121        final View view = mInflater.inflate(info.layoutResource, null);
1122        view.setTag(info);
1123        Search search = (Search) view.findViewById(R.id.widget_search);
1124        search.setLauncher(this);
1125
1126        mWorkspace.addInCurrentScreen(view, xy[0], xy[1], info.spanX, spanY);
1127    }
1128
1129    void processShortcut(Intent intent, int requestCodeApplication, int requestCodeShortcut) {
1130        // Handle case where user selected "Applications"
1131        String applicationName = getResources().getString(R.string.group_applications);
1132        String shortcutName = intent.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
1133
1134        if (applicationName != null && applicationName.equals(shortcutName)) {
1135            Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
1136            mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
1137
1138            Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1139            pickIntent.putExtra(Intent.EXTRA_INTENT, mainIntent);
1140            startActivityForResult(pickIntent, requestCodeApplication);
1141        } else {
1142            startActivityForResult(intent, requestCodeShortcut);
1143        }
1144    }
1145
1146    void addLiveFolder(Intent intent) {
1147        // Handle case where user selected "Folder"
1148        String folderName = getResources().getString(R.string.group_folder);
1149        String shortcutName = intent.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
1150
1151        if (folderName != null && folderName.equals(shortcutName)) {
1152            addFolder(!mDesktopLocked);
1153        } else {
1154            startActivityForResult(intent, REQUEST_CREATE_LIVE_FOLDER);
1155        }
1156    }
1157
1158    void addFolder(boolean insertAtFirst) {
1159        UserFolderInfo folderInfo = new UserFolderInfo();
1160        folderInfo.title = getText(R.string.folder_name);
1161
1162        CellLayout.CellInfo cellInfo = mAddItemCellInfo;
1163        cellInfo.screen = mWorkspace.getCurrentScreen();
1164        if (!findSingleSlot(cellInfo)) return;
1165
1166        // Update the model
1167        LauncherModel.addItemToDatabase(this, folderInfo, LauncherSettings.Favorites.CONTAINER_DESKTOP,
1168                mWorkspace.getCurrentScreen(), cellInfo.cellX, cellInfo.cellY, false);
1169        sModel.addDesktopItem(folderInfo);
1170        sModel.addFolder(folderInfo);
1171
1172        // Create the view
1173        FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon, this,
1174                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), folderInfo);
1175        mWorkspace.addInCurrentScreen(newFolder,
1176                cellInfo.cellX, cellInfo.cellY, 1, 1, insertAtFirst);
1177    }
1178
1179    private void completeAddLiveFolder(Intent data, CellLayout.CellInfo cellInfo,
1180            boolean insertAtFirst) {
1181        cellInfo.screen = mWorkspace.getCurrentScreen();
1182        if (!findSingleSlot(cellInfo)) return;
1183
1184        final LiveFolderInfo info = addLiveFolder(this, data, cellInfo, false);
1185
1186        if (!mRestoring) {
1187            sModel.addDesktopItem(info);
1188
1189            final View view = LiveFolderIcon.fromXml(R.layout.live_folder_icon, this,
1190                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), info);
1191            mWorkspace.addInCurrentScreen(view, cellInfo.cellX, cellInfo.cellY, 1, 1, insertAtFirst);
1192        } else if (sModel.isDesktopLoaded()) {
1193            sModel.addDesktopItem(info);
1194        }
1195    }
1196
1197    static LiveFolderInfo addLiveFolder(Context context, Intent data,
1198            CellLayout.CellInfo cellInfo, boolean notify) {
1199
1200        Intent baseIntent = data.getParcelableExtra(LiveFolders.EXTRA_LIVE_FOLDER_BASE_INTENT);
1201        String name = data.getStringExtra(LiveFolders.EXTRA_LIVE_FOLDER_NAME);
1202
1203        Drawable icon = null;
1204        boolean filtered = false;
1205        Intent.ShortcutIconResource iconResource = null;
1206
1207        Parcelable extra = data.getParcelableExtra(LiveFolders.EXTRA_LIVE_FOLDER_ICON);
1208        if (extra != null && extra instanceof Intent.ShortcutIconResource) {
1209            try {
1210                iconResource = (Intent.ShortcutIconResource) extra;
1211                final PackageManager packageManager = context.getPackageManager();
1212                Resources resources = packageManager.getResourcesForApplication(
1213                        iconResource.packageName);
1214                final int id = resources.getIdentifier(iconResource.resourceName, null, null);
1215                icon = resources.getDrawable(id);
1216            } catch (Exception e) {
1217                w(LOG_TAG, "Could not load live folder icon: " + extra);
1218            }
1219        }
1220
1221        if (icon == null) {
1222            icon = context.getResources().getDrawable(R.drawable.ic_launcher_folder);
1223        }
1224
1225        final LiveFolderInfo info = new LiveFolderInfo();
1226        info.icon = icon;
1227        info.filtered = filtered;
1228        info.title = name;
1229        info.iconResource = iconResource;
1230        info.uri = data.getData();
1231        info.baseIntent = baseIntent;
1232        info.displayMode = data.getIntExtra(LiveFolders.EXTRA_LIVE_FOLDER_DISPLAY_MODE,
1233                LiveFolders.DISPLAY_MODE_GRID);
1234
1235        LauncherModel.addItemToDatabase(context, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
1236                cellInfo.screen, cellInfo.cellX, cellInfo.cellY, notify);
1237        sModel.addFolder(info);
1238
1239        return info;
1240    }
1241
1242    private boolean findSingleSlot(CellLayout.CellInfo cellInfo) {
1243        final int[] xy = new int[2];
1244        if (findSlot(cellInfo, xy, 1, 1)) {
1245            cellInfo.cellX = xy[0];
1246            cellInfo.cellY = xy[1];
1247            return true;
1248        }
1249        return false;
1250    }
1251
1252    private boolean findSlot(CellLayout.CellInfo cellInfo, int[] xy, int spanX, int spanY) {
1253        if (!cellInfo.findCellForSpan(xy, spanX, spanY)) {
1254            boolean[] occupied = mSavedState != null ?
1255                    mSavedState.getBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS) : null;
1256            cellInfo = mWorkspace.findAllVacantCells(occupied);
1257            if (!cellInfo.findCellForSpan(xy, spanX, spanY)) {
1258                Toast.makeText(this, getString(R.string.out_of_space), Toast.LENGTH_SHORT).show();
1259                return false;
1260            }
1261        }
1262        return true;
1263    }
1264
1265    private void showNotifications() {
1266        final StatusBarManager statusBar = (StatusBarManager) getSystemService(STATUS_BAR_SERVICE);
1267        if (statusBar != null) {
1268            statusBar.expand();
1269        }
1270    }
1271
1272    private void startWallpaper() {
1273        final Intent pickWallpaper = new Intent(Intent.ACTION_SET_WALLPAPER);
1274        startActivity(Intent.createChooser(pickWallpaper, getString(R.string.chooser_wallpaper)));
1275    }
1276
1277    /**
1278     * Registers various intent receivers. The current implementation registers
1279     * only a wallpaper intent receiver to let other applications change the
1280     * wallpaper.
1281     */
1282    private void registerIntentReceivers() {
1283        if (sWallpaperReceiver == null) {
1284            final Application application = getApplication();
1285
1286            sWallpaperReceiver = new WallpaperIntentReceiver(application, this);
1287
1288            IntentFilter filter = new IntentFilter(Intent.ACTION_WALLPAPER_CHANGED);
1289            application.registerReceiver(sWallpaperReceiver, filter);
1290        } else {
1291            sWallpaperReceiver.setLauncher(this);
1292        }
1293
1294        IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED);
1295        filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
1296        filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
1297        filter.addDataScheme("package");
1298        registerReceiver(mApplicationsReceiver, filter);
1299    }
1300
1301    /**
1302     * Registers various content observers. The current implementation registers
1303     * only a favorites observer to keep track of the favorites applications.
1304     */
1305    private void registerContentObservers() {
1306        ContentResolver resolver = getContentResolver();
1307        resolver.registerContentObserver(LauncherSettings.Favorites.CONTENT_URI, true, mObserver);
1308    }
1309
1310    @Override
1311    public void onWindowFocusChanged(boolean hasFocus) {
1312        super.onWindowFocusChanged(hasFocus);
1313        if (!hasFocus) {
1314            mBackDown = mHomeDown = false;
1315        }
1316    }
1317
1318    @Override
1319    public boolean dispatchKeyEvent(KeyEvent event) {
1320        if (event.getAction() == KeyEvent.ACTION_DOWN) {
1321            switch (event.getKeyCode()) {
1322                case KeyEvent.KEYCODE_BACK:
1323                    mBackDown = true;
1324                    return true;
1325                case KeyEvent.KEYCODE_HOME:
1326                    mHomeDown = true;
1327                    return true;
1328            }
1329        } else if (event.getAction() == KeyEvent.ACTION_UP) {
1330            switch (event.getKeyCode()) {
1331                case KeyEvent.KEYCODE_BACK:
1332                    if (!event.isCanceled()) {
1333                        mWorkspace.dispatchKeyEvent(event);
1334                        if (mDrawer.isOpened()) {
1335                            closeDrawer();
1336                        } else {
1337                            closeFolder();
1338                        }
1339                    }
1340                    mBackDown = false;
1341                    return true;
1342                case KeyEvent.KEYCODE_HOME:
1343                    mHomeDown = false;
1344                    return true;
1345            }
1346        }
1347
1348        return super.dispatchKeyEvent(event);
1349    }
1350
1351    private void closeDrawer() {
1352        closeDrawer(true);
1353    }
1354
1355    private void closeDrawer(boolean animated) {
1356        if (mDrawer.isOpened()) {
1357            if (animated) {
1358                mDrawer.animateClose();
1359            } else {
1360                mDrawer.close();
1361            }
1362            if (mDrawer.hasFocus()) {
1363                mWorkspace.getChildAt(mWorkspace.getCurrentScreen()).requestFocus();
1364            }
1365        }
1366    }
1367
1368    private void closeFolder() {
1369        Folder folder = mWorkspace.getOpenFolder();
1370        if (folder != null) {
1371            closeFolder(folder);
1372        }
1373    }
1374
1375    void closeFolder(Folder folder) {
1376        folder.getInfo().opened = false;
1377        ViewGroup parent = (ViewGroup) folder.getParent();
1378        if (parent != null) {
1379            parent.removeView(folder);
1380        }
1381        folder.onClose();
1382    }
1383
1384    /**
1385     * When the notification that favorites have changed is received, requests
1386     * a favorites list refresh.
1387     */
1388    private void onFavoritesChanged() {
1389        mDesktopLocked = true;
1390        mDrawer.lock();
1391        sModel.loadUserItems(false, this, false, false);
1392    }
1393
1394    void onDesktopItemsLoaded() {
1395        if (mDestroyed) return;
1396        bindDesktopItems();
1397    }
1398
1399    /**
1400     * Refreshes the shortcuts shown on the workspace.
1401     */
1402    private void bindDesktopItems() {
1403        final ArrayList<ItemInfo> shortcuts = sModel.getDesktopItems();
1404        final ArrayList<LauncherAppWidgetInfo> appWidgets = sModel.getDesktopAppWidgets();
1405        final ApplicationsAdapter drawerAdapter = sModel.getApplicationsAdapter();
1406        if (shortcuts == null || appWidgets == null || drawerAdapter == null) {
1407            return;
1408        }
1409
1410        final Workspace workspace = mWorkspace;
1411        int count = workspace.getChildCount();
1412        for (int i = 0; i < count; i++) {
1413            ((ViewGroup) workspace.getChildAt(i)).removeAllViewsInLayout();
1414        }
1415
1416        if (DEBUG_USER_INTERFACE) {
1417            android.widget.Button finishButton = new android.widget.Button(this);
1418            finishButton.setText("Finish");
1419            workspace.addInScreen(finishButton, 1, 0, 0, 1, 1);
1420
1421            finishButton.setOnClickListener(new android.widget.Button.OnClickListener() {
1422                public void onClick(View v) {
1423                    finish();
1424                }
1425            });
1426        }
1427
1428        // Flag any old binder to terminate early
1429        if (mBinder != null) {
1430            mBinder.mTerminate = true;
1431        }
1432
1433        mBinder = new DesktopBinder(this, shortcuts, appWidgets, drawerAdapter);
1434        mBinder.startBindingItems();
1435    }
1436
1437    private void bindItems(Launcher.DesktopBinder binder,
1438            ArrayList<ItemInfo> shortcuts, int start, int count) {
1439
1440        final Workspace workspace = mWorkspace;
1441        final boolean desktopLocked = mDesktopLocked;
1442
1443        final int end = Math.min(start + DesktopBinder.ITEMS_COUNT, count);
1444        int i = start;
1445
1446        for ( ; i < end; i++) {
1447            final ItemInfo item = shortcuts.get(i);
1448            switch (item.itemType) {
1449                case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION:
1450                case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
1451                    final View shortcut = createShortcut((ApplicationInfo) item);
1452                    workspace.addInScreen(shortcut, item.screen, item.cellX, item.cellY, 1, 1,
1453                            !desktopLocked);
1454                    break;
1455                case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER:
1456                    final FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon, this,
1457                            (ViewGroup) workspace.getChildAt(workspace.getCurrentScreen()),
1458                            (UserFolderInfo) item);
1459                    workspace.addInScreen(newFolder, item.screen, item.cellX, item.cellY, 1, 1,
1460                            !desktopLocked);
1461                    break;
1462                case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER:
1463                    final FolderIcon newLiveFolder = LiveFolderIcon.fromXml(
1464                            R.layout.live_folder_icon, this,
1465                            (ViewGroup) workspace.getChildAt(workspace.getCurrentScreen()),
1466                            (LiveFolderInfo) item);
1467                    workspace.addInScreen(newLiveFolder, item.screen, item.cellX, item.cellY, 1, 1,
1468                            !desktopLocked);
1469                    break;
1470                case LauncherSettings.Favorites.ITEM_TYPE_WIDGET_SEARCH:
1471                    final int screen = workspace.getCurrentScreen();
1472                    final View view = mInflater.inflate(R.layout.widget_search,
1473                            (ViewGroup) workspace.getChildAt(screen), false);
1474
1475                    Search search = (Search) view.findViewById(R.id.widget_search);
1476                    search.setLauncher(this);
1477
1478                    final Widget widget = (Widget) item;
1479                    view.setTag(widget);
1480
1481                    workspace.addWidget(view, widget, !desktopLocked);
1482                    break;
1483            }
1484        }
1485
1486        workspace.requestLayout();
1487
1488        if (end >= count) {
1489            finishBindDesktopItems();
1490            binder.startBindingDrawer();
1491        } else {
1492            binder.obtainMessage(DesktopBinder.MESSAGE_BIND_ITEMS, i, count).sendToTarget();
1493        }
1494    }
1495
1496    private void finishBindDesktopItems() {
1497        if (mSavedState != null) {
1498            if (!mWorkspace.hasFocus()) {
1499                mWorkspace.getChildAt(mWorkspace.getCurrentScreen()).requestFocus();
1500            }
1501
1502            final long[] userFolders = mSavedState.getLongArray(RUNTIME_STATE_USER_FOLDERS);
1503            if (userFolders != null) {
1504                for (long folderId : userFolders) {
1505                    final FolderInfo info = sModel.findFolderById(folderId);
1506                    if (info != null) {
1507                        openFolder(info);
1508                    }
1509                }
1510                final Folder openFolder = mWorkspace.getOpenFolder();
1511                if (openFolder != null) {
1512                    openFolder.requestFocus();
1513                }
1514            }
1515
1516            final boolean allApps = mSavedState.getBoolean(RUNTIME_STATE_ALL_APPS_FOLDER, false);
1517            if (allApps) {
1518                mDrawer.open();
1519            }
1520
1521            mSavedState = null;
1522        }
1523
1524        if (mSavedInstanceState != null) {
1525            super.onRestoreInstanceState(mSavedInstanceState);
1526            mSavedInstanceState = null;
1527        }
1528
1529        if (mDrawer.isOpened() && !mDrawer.hasFocus()) {
1530            mDrawer.requestFocus();
1531        }
1532
1533        mDesktopLocked = false;
1534        mDrawer.unlock();
1535    }
1536
1537    private void bindDrawer(Launcher.DesktopBinder binder,
1538            ApplicationsAdapter drawerAdapter) {
1539        mAllAppsGrid.setAdapter(drawerAdapter);
1540        binder.startBindingAppWidgetsWhenIdle();
1541    }
1542
1543    private void bindAppWidgets(Launcher.DesktopBinder binder,
1544            LinkedList<LauncherAppWidgetInfo> appWidgets) {
1545
1546        final Workspace workspace = mWorkspace;
1547        final boolean desktopLocked = mDesktopLocked;
1548
1549        if (!appWidgets.isEmpty()) {
1550            final LauncherAppWidgetInfo item = appWidgets.removeFirst();
1551
1552            final int appWidgetId = item.appWidgetId;
1553            final AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
1554            item.hostView = mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
1555
1556            if (LOGD) d(LOG_TAG, String.format("about to setAppWidget for id=%d, info=%s", appWidgetId, appWidgetInfo));
1557
1558            item.hostView.setAppWidget(appWidgetId, appWidgetInfo);
1559            item.hostView.setTag(item);
1560
1561            workspace.addInScreen(item.hostView, item.screen, item.cellX,
1562                    item.cellY, item.spanX, item.spanY, !desktopLocked);
1563
1564            workspace.requestLayout();
1565        }
1566
1567        if (appWidgets.isEmpty()) {
1568            if (PROFILE_ROTATE) {
1569                android.os.Debug.stopMethodTracing();
1570            }
1571        } else {
1572            binder.obtainMessage(DesktopBinder.MESSAGE_BIND_APPWIDGETS).sendToTarget();
1573        }
1574    }
1575
1576    DragController getDragController() {
1577        return mDragLayer;
1578    }
1579
1580    /**
1581     * Launches the intent referred by the clicked shortcut.
1582     *
1583     * @param v The view representing the clicked shortcut.
1584     */
1585    public void onClick(View v) {
1586        Object tag = v.getTag();
1587        if (tag instanceof ApplicationInfo) {
1588            // Open shortcut
1589            final Intent intent = ((ApplicationInfo) tag).intent;
1590            startActivitySafely(intent);
1591        } else if (tag instanceof FolderInfo) {
1592            handleFolderClick((FolderInfo) tag);
1593        }
1594    }
1595
1596    void startActivitySafely(Intent intent) {
1597        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
1598        try {
1599            startActivity(intent);
1600        } catch (ActivityNotFoundException e) {
1601            Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
1602        } catch (SecurityException e) {
1603            Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
1604            e(LOG_TAG, "Launcher does not have the permission to launch " + intent +
1605                    ". Make sure to create a MAIN intent-filter for the corresponding activity " +
1606                    "or use the exported attribute for this activity.", e);
1607        }
1608    }
1609
1610    private void handleFolderClick(FolderInfo folderInfo) {
1611        if (!folderInfo.opened) {
1612            // Close any open folder
1613            closeFolder();
1614            // Open the requested folder
1615            openFolder(folderInfo);
1616        } else {
1617            // Find the open folder...
1618            Folder openFolder = mWorkspace.getFolderForTag(folderInfo);
1619            int folderScreen;
1620            if (openFolder != null) {
1621                folderScreen = mWorkspace.getScreenForView(openFolder);
1622                // .. and close it
1623                closeFolder(openFolder);
1624                if (folderScreen != mWorkspace.getCurrentScreen()) {
1625                    // Close any folder open on the current screen
1626                    closeFolder();
1627                    // Pull the folder onto this screen
1628                    openFolder(folderInfo);
1629                }
1630            }
1631        }
1632    }
1633
1634    private void loadWallpaper() {
1635        // The first time the application is started, we load the wallpaper from
1636        // the ApplicationContext
1637        if (sWallpaper == null) {
1638            final Drawable drawable = getWallpaper();
1639            if (drawable instanceof BitmapDrawable) {
1640                sWallpaper = ((BitmapDrawable) drawable).getBitmap();
1641            } else {
1642                throw new IllegalStateException("The wallpaper must be a BitmapDrawable.");
1643            }
1644        }
1645        mWorkspace.loadWallpaper(sWallpaper);
1646    }
1647
1648    /**
1649     * Opens the user fodler described by the specified tag. The opening of the folder
1650     * is animated relative to the specified View. If the View is null, no animation
1651     * is played.
1652     *
1653     * @param folderInfo The FolderInfo describing the folder to open.
1654     */
1655    private void openFolder(FolderInfo folderInfo) {
1656        Folder openFolder;
1657
1658        if (folderInfo instanceof UserFolderInfo) {
1659            openFolder = UserFolder.fromXml(this);
1660        } else if (folderInfo instanceof LiveFolderInfo) {
1661            openFolder = com.android.launcher2.LiveFolder.fromXml(this, folderInfo);
1662        } else {
1663            return;
1664        }
1665
1666        openFolder.setDragger(mDragLayer);
1667        openFolder.setLauncher(this);
1668
1669        openFolder.bind(folderInfo);
1670        folderInfo.opened = true;
1671
1672        mWorkspace.addInScreen(openFolder, folderInfo.screen, 0, 0, 4, 4);
1673        openFolder.onOpen();
1674    }
1675
1676    /**
1677     * Returns true if the workspace is being loaded. When the workspace is loading,
1678     * no user interaction should be allowed to avoid any conflict.
1679     *
1680     * @return True if the workspace is locked, false otherwise.
1681     */
1682    boolean isWorkspaceLocked() {
1683        return mDesktopLocked;
1684    }
1685
1686    public boolean onLongClick(View v) {
1687        if (mDesktopLocked) {
1688            return false;
1689        }
1690
1691        if (!(v instanceof CellLayout)) {
1692            v = (View) v.getParent();
1693        }
1694
1695        CellLayout.CellInfo cellInfo = (CellLayout.CellInfo) v.getTag();
1696
1697        // This happens when long clicking an item with the dpad/trackball
1698        if (cellInfo == null) {
1699            return true;
1700        }
1701
1702        if (mWorkspace.allowLongPress()) {
1703            if (cellInfo.cell == null) {
1704                if (cellInfo.valid) {
1705                    // User long pressed on empty space
1706                    mWorkspace.setAllowLongPress(false);
1707                    showAddDialog(cellInfo);
1708                }
1709            } else {
1710                if (!(cellInfo.cell instanceof Folder)) {
1711                    // User long pressed on an item
1712                    mWorkspace.startDrag(cellInfo);
1713                }
1714            }
1715        }
1716        return true;
1717    }
1718
1719    static LauncherModel getModel() {
1720        return sModel;
1721    }
1722
1723    void closeAllApplications() {
1724        mDrawer.close();
1725    }
1726
1727    View getDrawerHandle() {
1728        return mHandleView;
1729    }
1730
1731    boolean isDrawerDown() {
1732        return !mDrawer.isMoving() && !mDrawer.isOpened();
1733    }
1734
1735    boolean isDrawerUp() {
1736        return mDrawer.isOpened() && !mDrawer.isMoving();
1737    }
1738
1739    boolean isDrawerMoving() {
1740        return mDrawer.isMoving();
1741    }
1742
1743    Workspace getWorkspace() {
1744        return mWorkspace;
1745    }
1746
1747    GridView getApplicationsGrid() {
1748        return mAllAppsGrid;
1749    }
1750
1751    @Override
1752    protected Dialog onCreateDialog(int id) {
1753        switch (id) {
1754            case DIALOG_CREATE_SHORTCUT:
1755                return new CreateShortcut().createDialog();
1756            case DIALOG_RENAME_FOLDER:
1757                return new RenameFolder().createDialog();
1758        }
1759
1760        return super.onCreateDialog(id);
1761    }
1762
1763    @Override
1764    protected void onPrepareDialog(int id, Dialog dialog) {
1765        switch (id) {
1766            case DIALOG_CREATE_SHORTCUT:
1767                break;
1768            case DIALOG_RENAME_FOLDER:
1769                if (mFolderInfo != null) {
1770                    EditText input = (EditText) dialog.findViewById(R.id.folder_name);
1771                    final CharSequence text = mFolderInfo.title;
1772                    input.setText(text);
1773                    input.setSelection(0, text.length());
1774                }
1775                break;
1776        }
1777    }
1778
1779    void showRenameDialog(FolderInfo info) {
1780        mFolderInfo = info;
1781        mWaitingForResult = true;
1782        showDialog(DIALOG_RENAME_FOLDER);
1783    }
1784
1785    private void showAddDialog(CellLayout.CellInfo cellInfo) {
1786        mAddItemCellInfo = cellInfo;
1787        mWaitingForResult = true;
1788        showDialog(DIALOG_CREATE_SHORTCUT);
1789    }
1790
1791    private void pickShortcut(int requestCode, int title) {
1792        Bundle bundle = new Bundle();
1793
1794        ArrayList<String> shortcutNames = new ArrayList<String>();
1795        shortcutNames.add(getString(R.string.group_applications));
1796        bundle.putStringArrayList(Intent.EXTRA_SHORTCUT_NAME, shortcutNames);
1797
1798        ArrayList<ShortcutIconResource> shortcutIcons = new ArrayList<ShortcutIconResource>();
1799        shortcutIcons.add(ShortcutIconResource.fromContext(Launcher.this,
1800                        R.drawable.ic_launcher_application));
1801        bundle.putParcelableArrayList(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, shortcutIcons);
1802
1803        Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1804        pickIntent.putExtra(Intent.EXTRA_INTENT, new Intent(Intent.ACTION_CREATE_SHORTCUT));
1805        pickIntent.putExtra(Intent.EXTRA_TITLE, getText(title));
1806        pickIntent.putExtras(bundle);
1807
1808        startActivityForResult(pickIntent, requestCode);
1809    }
1810
1811    private class RenameFolder {
1812        private EditText mInput;
1813
1814        Dialog createDialog() {
1815            mWaitingForResult = true;
1816            final View layout = View.inflate(Launcher.this, R.layout.rename_folder, null);
1817            mInput = (EditText) layout.findViewById(R.id.folder_name);
1818
1819            AlertDialog.Builder builder = new AlertDialog.Builder(Launcher.this);
1820            builder.setIcon(0);
1821            builder.setTitle(getString(R.string.rename_folder_title));
1822            builder.setCancelable(true);
1823            builder.setOnCancelListener(new Dialog.OnCancelListener() {
1824                public void onCancel(DialogInterface dialog) {
1825                    cleanup();
1826                }
1827            });
1828            builder.setNegativeButton(getString(R.string.cancel_action),
1829                new Dialog.OnClickListener() {
1830                    public void onClick(DialogInterface dialog, int which) {
1831                        cleanup();
1832                    }
1833                }
1834            );
1835            builder.setPositiveButton(getString(R.string.rename_action),
1836                new Dialog.OnClickListener() {
1837                    public void onClick(DialogInterface dialog, int which) {
1838                        changeFolderName();
1839                    }
1840                }
1841            );
1842            builder.setView(layout);
1843
1844            final AlertDialog dialog = builder.create();
1845            dialog.setOnShowListener(new DialogInterface.OnShowListener() {
1846                public void onShow(DialogInterface dialog) {
1847                    mWorkspace.lock();
1848                }
1849            });
1850
1851            return dialog;
1852        }
1853
1854        private void changeFolderName() {
1855            final String name = mInput.getText().toString();
1856            if (!TextUtils.isEmpty(name)) {
1857                // Make sure we have the right folder info
1858                mFolderInfo = sModel.findFolderById(mFolderInfo.id);
1859                mFolderInfo.title = name;
1860                LauncherModel.updateItemInDatabase(Launcher.this, mFolderInfo);
1861
1862                if (mDesktopLocked) {
1863                    mDrawer.lock();
1864                    sModel.loadUserItems(false, Launcher.this, false, false);
1865                } else {
1866                    final FolderIcon folderIcon = (FolderIcon)
1867                            mWorkspace.getViewForTag(mFolderInfo);
1868                    if (folderIcon != null) {
1869                        folderIcon.setText(name);
1870                        getWorkspace().requestLayout();
1871                    } else {
1872                        mDesktopLocked = true;
1873                        mDrawer.lock();
1874                        sModel.loadUserItems(false, Launcher.this, false, false);
1875                    }
1876                }
1877            }
1878            cleanup();
1879        }
1880
1881        private void cleanup() {
1882            mWorkspace.unlock();
1883            dismissDialog(DIALOG_RENAME_FOLDER);
1884            mWaitingForResult = false;
1885            mFolderInfo = null;
1886        }
1887    }
1888
1889    /**
1890     * Displays the shortcut creation dialog and launches, if necessary, the
1891     * appropriate activity.
1892     */
1893    private class CreateShortcut implements DialogInterface.OnClickListener,
1894            DialogInterface.OnCancelListener, DialogInterface.OnDismissListener,
1895            DialogInterface.OnShowListener {
1896
1897        private AddAdapter mAdapter;
1898
1899        Dialog createDialog() {
1900            mWaitingForResult = true;
1901
1902            mAdapter = new AddAdapter(Launcher.this);
1903
1904            final AlertDialog.Builder builder = new AlertDialog.Builder(Launcher.this);
1905            builder.setTitle(getString(R.string.menu_item_add_item));
1906            builder.setAdapter(mAdapter, this);
1907
1908            builder.setInverseBackgroundForced(true);
1909
1910            AlertDialog dialog = builder.create();
1911            dialog.setOnCancelListener(this);
1912            dialog.setOnDismissListener(this);
1913            dialog.setOnShowListener(this);
1914
1915            return dialog;
1916        }
1917
1918        public void onCancel(DialogInterface dialog) {
1919            mWaitingForResult = false;
1920            cleanup();
1921        }
1922
1923        public void onDismiss(DialogInterface dialog) {
1924            mWorkspace.unlock();
1925        }
1926
1927        private void cleanup() {
1928            mWorkspace.unlock();
1929            dismissDialog(DIALOG_CREATE_SHORTCUT);
1930        }
1931
1932        /**
1933         * Handle the action clicked in the "Add to home" dialog.
1934         */
1935        public void onClick(DialogInterface dialog, int which) {
1936            Resources res = getResources();
1937            cleanup();
1938
1939            switch (which) {
1940                case AddAdapter.ITEM_SHORTCUT: {
1941                    // Insert extra item to handle picking application
1942                    pickShortcut(REQUEST_PICK_SHORTCUT, R.string.title_select_shortcut);
1943                    break;
1944                }
1945
1946                case AddAdapter.ITEM_APPWIDGET: {
1947                    int appWidgetId = Launcher.this.mAppWidgetHost.allocateAppWidgetId();
1948
1949                    Intent pickIntent = new Intent(AppWidgetManager.ACTION_APPWIDGET_PICK);
1950                    pickIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
1951                    // add the search widget
1952                    ArrayList<AppWidgetProviderInfo> customInfo =
1953                            new ArrayList<AppWidgetProviderInfo>();
1954                    AppWidgetProviderInfo info = new AppWidgetProviderInfo();
1955                    info.provider = new ComponentName(getPackageName(), "XXX.YYY");
1956                    info.label = getString(R.string.group_search);
1957                    info.icon = R.drawable.ic_search_widget;
1958                    customInfo.add(info);
1959                    pickIntent.putParcelableArrayListExtra(
1960                            AppWidgetManager.EXTRA_CUSTOM_INFO, customInfo);
1961                    ArrayList<Bundle> customExtras = new ArrayList<Bundle>();
1962                    Bundle b = new Bundle();
1963                    b.putString(EXTRA_CUSTOM_WIDGET, SEARCH_WIDGET);
1964                    customExtras.add(b);
1965                    pickIntent.putParcelableArrayListExtra(
1966                            AppWidgetManager.EXTRA_CUSTOM_EXTRAS, customExtras);
1967                    // start the pick activity
1968                    startActivityForResult(pickIntent, REQUEST_PICK_APPWIDGET);
1969                    break;
1970                }
1971
1972                case AddAdapter.ITEM_LIVE_FOLDER: {
1973                    // Insert extra item to handle inserting folder
1974                    Bundle bundle = new Bundle();
1975
1976                    ArrayList<String> shortcutNames = new ArrayList<String>();
1977                    shortcutNames.add(res.getString(R.string.group_folder));
1978                    bundle.putStringArrayList(Intent.EXTRA_SHORTCUT_NAME, shortcutNames);
1979
1980                    ArrayList<ShortcutIconResource> shortcutIcons =
1981                            new ArrayList<ShortcutIconResource>();
1982                    shortcutIcons.add(ShortcutIconResource.fromContext(Launcher.this,
1983                            R.drawable.ic_launcher_folder));
1984                    bundle.putParcelableArrayList(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, shortcutIcons);
1985
1986                    Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1987                    pickIntent.putExtra(Intent.EXTRA_INTENT,
1988                            new Intent(LiveFolders.ACTION_CREATE_LIVE_FOLDER));
1989                    pickIntent.putExtra(Intent.EXTRA_TITLE,
1990                            getText(R.string.title_select_live_folder));
1991                    pickIntent.putExtras(bundle);
1992
1993                    startActivityForResult(pickIntent, REQUEST_PICK_LIVE_FOLDER);
1994                    break;
1995                }
1996
1997                case AddAdapter.ITEM_WALLPAPER: {
1998                    startWallpaper();
1999                    break;
2000                }
2001            }
2002        }
2003
2004        public void onShow(DialogInterface dialog) {
2005            mWorkspace.lock();
2006        }
2007    }
2008
2009    /**
2010     * Receives notifications when applications are added/removed.
2011     */
2012    private class ApplicationsIntentReceiver extends BroadcastReceiver {
2013        @Override
2014        public void onReceive(Context context, Intent intent) {
2015            final String action = intent.getAction();
2016            final String packageName = intent.getData().getSchemeSpecificPart();
2017            final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
2018
2019            if (LauncherModel.DEBUG_LOADERS) {
2020                d(LauncherModel.LOG_TAG, "application intent received: " + action +
2021                        ", replacing=" + replacing);
2022                d(LauncherModel.LOG_TAG, "  --> " + intent.getData());
2023            }
2024
2025            if (!Intent.ACTION_PACKAGE_CHANGED.equals(action)) {
2026                if (Intent.ACTION_PACKAGE_REMOVED.equals(action)) {
2027                    if (!replacing) {
2028                        removeShortcutsForPackage(packageName);
2029                        if (LauncherModel.DEBUG_LOADERS) {
2030                            d(LauncherModel.LOG_TAG, "  --> remove package");
2031                        }
2032                        sModel.removePackage(Launcher.this, packageName);
2033                    }
2034                    // else, we are replacing the package, so a PACKAGE_ADDED will be sent
2035                    // later, we will update the package at this time
2036                } else {
2037                    if (!replacing) {
2038                        if (LauncherModel.DEBUG_LOADERS) {
2039                            d(LauncherModel.LOG_TAG, "  --> add package");
2040                        }
2041                        sModel.addPackage(Launcher.this, packageName);
2042                    } else {
2043                        if (LauncherModel.DEBUG_LOADERS) {
2044                            d(LauncherModel.LOG_TAG, "  --> update package " + packageName);
2045                        }
2046                        sModel.updatePackage(Launcher.this, packageName);
2047                        updateShortcutsForPackage(packageName);
2048                    }
2049                }
2050                removeDialog(DIALOG_CREATE_SHORTCUT);
2051            } else {
2052                if (LauncherModel.DEBUG_LOADERS) {
2053                    d(LauncherModel.LOG_TAG, "  --> sync package " + packageName);
2054                }
2055                sModel.syncPackage(Launcher.this, packageName);
2056            }
2057        }
2058    }
2059
2060    /**
2061     * Receives notifications whenever the user favorites have changed.
2062     */
2063    private class FavoritesChangeObserver extends ContentObserver {
2064        public FavoritesChangeObserver() {
2065            super(new Handler());
2066        }
2067
2068        @Override
2069        public void onChange(boolean selfChange) {
2070            onFavoritesChanged();
2071        }
2072    }
2073
2074    /**
2075     * Receives intents from other applications to change the wallpaper.
2076     */
2077    private static class WallpaperIntentReceiver extends BroadcastReceiver {
2078        private final Application mApplication;
2079        private WeakReference<Launcher> mLauncher;
2080
2081        WallpaperIntentReceiver(Application application, Launcher launcher) {
2082            mApplication = application;
2083            setLauncher(launcher);
2084        }
2085
2086        void setLauncher(Launcher launcher) {
2087            mLauncher = new WeakReference<Launcher>(launcher);
2088        }
2089
2090        @Override
2091        public void onReceive(Context context, Intent intent) {
2092            // Load the wallpaper from the ApplicationContext and store it locally
2093            // until the Launcher Activity is ready to use it
2094            final Drawable drawable = mApplication.getWallpaper();
2095            if (drawable instanceof BitmapDrawable) {
2096                sWallpaper = ((BitmapDrawable) drawable).getBitmap();
2097            } else {
2098                throw new IllegalStateException("The wallpaper must be a BitmapDrawable.");
2099            }
2100
2101            // If Launcher is alive, notify we have a new wallpaper
2102            if (mLauncher != null) {
2103                final Launcher launcher = mLauncher.get();
2104                if (launcher != null) {
2105                    launcher.loadWallpaper();
2106                }
2107            }
2108        }
2109    }
2110
2111    private class DrawerManager implements SlidingDrawer.OnDrawerOpenListener,
2112            SlidingDrawer.OnDrawerCloseListener, SlidingDrawer.OnDrawerScrollListener {
2113        private boolean mOpen;
2114
2115        public void onDrawerOpened() {
2116            if (!mOpen) {
2117                mHandleIcon.reverseTransition(150);
2118
2119                final Rect bounds = mWorkspace.mDrawerBounds;
2120                offsetBoundsToDragLayer(bounds, mAllAppsGrid);
2121
2122                mOpen = true;
2123            }
2124        }
2125
2126        private void offsetBoundsToDragLayer(Rect bounds, View view) {
2127            view.getDrawingRect(bounds);
2128
2129            while (view != mDragLayer) {
2130                bounds.offset(view.getLeft(), view.getTop());
2131                view = (View) view.getParent();
2132            }
2133        }
2134
2135        public void onDrawerClosed() {
2136            if (mOpen) {
2137                mHandleIcon.reverseTransition(150);
2138                mWorkspace.mDrawerBounds.setEmpty();
2139                mOpen = false;
2140            }
2141
2142            mAllAppsGrid.setSelection(0);
2143            mAllAppsGrid.clearTextFilter();
2144        }
2145
2146        public void onScrollStarted() {
2147            if (PROFILE_DRAWER) {
2148                android.os.Debug.startMethodTracing("/sdcard/launcher-drawer");
2149            }
2150
2151            mWorkspace.mDrawerContentWidth = mAllAppsGrid.getWidth();
2152            mWorkspace.mDrawerContentHeight = mAllAppsGrid.getHeight();
2153        }
2154
2155        public void onScrollEnded() {
2156            if (PROFILE_DRAWER) {
2157                android.os.Debug.stopMethodTracing();
2158            }
2159        }
2160    }
2161
2162    private static class DesktopBinder extends Handler implements MessageQueue.IdleHandler {
2163        static final int MESSAGE_BIND_ITEMS = 0x1;
2164        static final int MESSAGE_BIND_APPWIDGETS = 0x2;
2165        static final int MESSAGE_BIND_DRAWER = 0x3;
2166
2167        // Number of items to bind in every pass
2168        static final int ITEMS_COUNT = 6;
2169
2170        private final ArrayList<ItemInfo> mShortcuts;
2171        private final LinkedList<LauncherAppWidgetInfo> mAppWidgets;
2172        private final ApplicationsAdapter mDrawerAdapter;
2173        private final WeakReference<Launcher> mLauncher;
2174
2175        public boolean mTerminate = false;
2176
2177        DesktopBinder(Launcher launcher, ArrayList<ItemInfo> shortcuts,
2178                ArrayList<LauncherAppWidgetInfo> appWidgets,
2179                ApplicationsAdapter drawerAdapter) {
2180
2181            mLauncher = new WeakReference<Launcher>(launcher);
2182            mShortcuts = shortcuts;
2183            mDrawerAdapter = drawerAdapter;
2184
2185            // Sort widgets so active workspace is bound first
2186            final int currentScreen = launcher.mWorkspace.getCurrentScreen();
2187            final int size = appWidgets.size();
2188            mAppWidgets = new LinkedList<LauncherAppWidgetInfo>();
2189
2190            for (int i = 0; i < size; i++) {
2191                LauncherAppWidgetInfo appWidgetInfo = appWidgets.get(i);
2192                if (appWidgetInfo.screen == currentScreen) {
2193                    mAppWidgets.addFirst(appWidgetInfo);
2194                } else {
2195                    mAppWidgets.addLast(appWidgetInfo);
2196                }
2197            }
2198        }
2199
2200        public void startBindingItems() {
2201            obtainMessage(MESSAGE_BIND_ITEMS, 0, mShortcuts.size()).sendToTarget();
2202        }
2203
2204        public void startBindingDrawer() {
2205            obtainMessage(MESSAGE_BIND_DRAWER).sendToTarget();
2206        }
2207
2208        public void startBindingAppWidgetsWhenIdle() {
2209            // Ask for notification when message queue becomes idle
2210            final MessageQueue messageQueue = Looper.myQueue();
2211            messageQueue.addIdleHandler(this);
2212        }
2213
2214        public boolean queueIdle() {
2215            // Queue is idle, so start binding items
2216            startBindingAppWidgets();
2217            return false;
2218        }
2219
2220        public void startBindingAppWidgets() {
2221            obtainMessage(MESSAGE_BIND_APPWIDGETS).sendToTarget();
2222        }
2223
2224        @Override
2225        public void handleMessage(Message msg) {
2226            Launcher launcher = mLauncher.get();
2227            if (launcher == null || mTerminate) {
2228                return;
2229            }
2230
2231            switch (msg.what) {
2232                case MESSAGE_BIND_ITEMS: {
2233                    launcher.bindItems(this, mShortcuts, msg.arg1, msg.arg2);
2234                    break;
2235                }
2236                case MESSAGE_BIND_DRAWER: {
2237                    launcher.bindDrawer(this, mDrawerAdapter);
2238                    break;
2239                }
2240                case MESSAGE_BIND_APPWIDGETS: {
2241                    launcher.bindAppWidgets(this, mAppWidgets);
2242                    break;
2243                }
2244            }
2245        }
2246    }
2247}
2248