Launcher.java revision 642718023708403590838f4dc540e9b7971fd0b3 
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.SearchManager;
25import android.app.StatusBarManager;
26import android.app.WallpaperManager;
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.drawable.BitmapDrawable;
44import android.graphics.drawable.Drawable;
45import android.graphics.drawable.TransitionDrawable;
46import android.os.Bundle;
47import android.os.Handler;
48import android.os.Looper;
49import android.os.Message;
50import android.os.MessageQueue;
51import android.os.Parcelable;
52import android.os.RemoteException;
53import android.os.ServiceManager;
54import android.provider.LiveFolders;
55import android.text.Selection;
56import android.text.SpannableStringBuilder;
57import android.text.TextUtils;
58import android.text.method.TextKeyListener;
59import static android.util.Log.*;
60import android.view.Display;
61import android.view.KeyEvent;
62import android.view.LayoutInflater;
63import android.view.Menu;
64import android.view.MenuItem;
65import android.view.View;
66import android.view.ViewGroup;
67import android.view.View.OnLongClickListener;
68import android.view.inputmethod.InputMethodManager;
69import android.widget.EditText;
70import android.widget.TextView;
71import android.widget.Toast;
72import android.appwidget.AppWidgetManager;
73import android.appwidget.AppWidgetProviderInfo;
74
75import java.lang.ref.WeakReference;
76import java.util.ArrayList;
77import java.util.LinkedList;
78import java.io.DataOutputStream;
79import java.io.FileNotFoundException;
80import java.io.IOException;
81import java.io.DataInputStream;
82
83/**
84 * Default launcher application.
85 */
86public final class Launcher extends Activity implements View.OnClickListener, OnLongClickListener {
87    static final String LOG_TAG = "Launcher";
88    static final boolean LOGD = false;
89
90    private static final boolean PROFILE_STARTUP = false;
91    private static final boolean PROFILE_DRAWER = false;
92    private static final boolean PROFILE_ROTATE = false;
93    private static final boolean DEBUG_USER_INTERFACE = false;
94
95    private static final int WALLPAPER_SCREENS_SPAN = 2;
96
97    private static final int MENU_GROUP_ADD = 1;
98    private static final int MENU_ADD = Menu.FIRST + 1;
99    private static final int MENU_WALLPAPER_SETTINGS = MENU_ADD + 1;
100    private static final int MENU_SEARCH = MENU_WALLPAPER_SETTINGS + 1;
101    private static final int MENU_NOTIFICATIONS = MENU_SEARCH + 1;
102    private static final int MENU_SETTINGS = MENU_NOTIFICATIONS + 1;
103
104    private static final int REQUEST_CREATE_SHORTCUT = 1;
105    private static final int REQUEST_CREATE_LIVE_FOLDER = 4;
106    private static final int REQUEST_CREATE_APPWIDGET = 5;
107    private static final int REQUEST_PICK_APPLICATION = 6;
108    private static final int REQUEST_PICK_SHORTCUT = 7;
109    private static final int REQUEST_PICK_LIVE_FOLDER = 8;
110    private static final int REQUEST_PICK_APPWIDGET = 9;
111
112    static final String EXTRA_SHORTCUT_DUPLICATE = "duplicate";
113
114    static final String EXTRA_CUSTOM_WIDGET = "custom_widget";
115    static final String SEARCH_WIDGET = "search_widget";
116
117    static final int SCREEN_COUNT = 3;
118    static final int DEFAULT_SCREN = 1;
119    static final int NUMBER_CELLS_X = 4;
120    static final int NUMBER_CELLS_Y = 4;
121
122    static final int DIALOG_ALL_APPS = 1;
123    static final int DIALOG_CREATE_SHORTCUT = 2;
124    static final int DIALOG_RENAME_FOLDER = 3;
125
126    private static final String PREFERENCES = "launcher.preferences";
127
128    // Type: int
129    private static final String RUNTIME_STATE_CURRENT_SCREEN = "launcher.current_screen";
130    // Type: boolean
131    private static final String RUNTIME_STATE_ALL_APPS_FOLDER = "launcher.all_apps_folder";
132    // Type: long
133    private static final String RUNTIME_STATE_USER_FOLDERS = "launcher.user_folder";
134    // Type: int
135    private static final String RUNTIME_STATE_PENDING_ADD_SCREEN = "launcher.add_screen";
136    // Type: int
137    private static final String RUNTIME_STATE_PENDING_ADD_CELL_X = "launcher.add_cellX";
138    // Type: int
139    private static final String RUNTIME_STATE_PENDING_ADD_CELL_Y = "launcher.add_cellY";
140    // Type: int
141    private static final String RUNTIME_STATE_PENDING_ADD_SPAN_X = "launcher.add_spanX";
142    // Type: int
143    private static final String RUNTIME_STATE_PENDING_ADD_SPAN_Y = "launcher.add_spanY";
144    // Type: int
145    private static final String RUNTIME_STATE_PENDING_ADD_COUNT_X = "launcher.add_countX";
146    // Type: int
147    private static final String RUNTIME_STATE_PENDING_ADD_COUNT_Y = "launcher.add_countY";
148    // Type: int[]
149    private static final String RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS = "launcher.add_occupied_cells";
150    // Type: boolean
151    private static final String RUNTIME_STATE_PENDING_FOLDER_RENAME = "launcher.rename_folder";
152    // Type: long
153    private static final String RUNTIME_STATE_PENDING_FOLDER_RENAME_ID = "launcher.rename_folder_id";
154
155    private static final LauncherModel sModel = new LauncherModel();
156
157    private static Bitmap sWallpaper;
158
159    private static final Object sLock = new Object();
160    private static int sScreen = DEFAULT_SCREN;
161
162    private static WallpaperIntentReceiver sWallpaperReceiver;
163
164    private final BroadcastReceiver mApplicationsReceiver = new ApplicationsIntentReceiver();
165    private final ContentObserver mObserver = new FavoritesChangeObserver();
166
167    private LayoutInflater mInflater;
168
169    private DragController mDragController;
170    private DragLayer mDragLayer;
171    private WallpaperView mWallpaperView;
172    private Workspace mWorkspace;
173
174    private AppWidgetManager mAppWidgetManager;
175    private LauncherAppWidgetHost mAppWidgetHost;
176
177    static final int APPWIDGET_HOST_ID = 1024;
178
179    private CellLayout.CellInfo mAddItemCellInfo;
180    private CellLayout.CellInfo mMenuAddInfo;
181    private final int[] mCellCoordinates = new int[2];
182    private FolderInfo mFolderInfo;
183
184    private AllAppsDialog mAllAppsDialog;
185    private TransitionDrawable mHandleIcon;
186    private HandleView mHandleView;
187    private AllAppsView mAllAppsGrid; // TODO: put this into AllAppsDialog
188
189    private boolean mDesktopLocked = true;
190    private Bundle mSavedState;
191
192    private SpannableStringBuilder mDefaultKeySsb = null;
193
194    private boolean mDestroyed;
195
196    private boolean mIsNewIntent;
197
198    private boolean mRestoring;
199    private boolean mWaitingForResult;
200    private boolean mLocaleChanged;
201
202    private boolean mHomeDown;
203    private boolean mBackDown;
204
205    private Bundle mSavedInstanceState;
206
207    private DesktopBinder mBinder;
208
209    @Override
210    protected void onCreate(Bundle savedInstanceState) {
211        super.onCreate(savedInstanceState);
212        mInflater = getLayoutInflater();
213
214        mAppWidgetManager = AppWidgetManager.getInstance(this);
215
216        mAppWidgetHost = new LauncherAppWidgetHost(this, APPWIDGET_HOST_ID);
217        mAppWidgetHost.startListening();
218
219        if (PROFILE_STARTUP) {
220            android.os.Debug.startMethodTracing("/sdcard/launcher");
221        }
222
223        checkForLocaleChange();
224        setWallpaperDimension();
225
226        setContentView(R.layout.launcher);
227        setupViews();
228
229        mAllAppsDialog = new AllAppsDialog(this);
230        mAllAppsDialog.lock();
231
232        registerIntentReceivers();
233        registerContentObservers();
234
235        mSavedState = savedInstanceState;
236        restoreState(mSavedState);
237
238        if (PROFILE_STARTUP) {
239            android.os.Debug.stopMethodTracing();
240        }
241
242        if (!mRestoring) {
243            startLoaders();
244        }
245
246        // For handling default keys
247        mDefaultKeySsb = new SpannableStringBuilder();
248        Selection.setSelection(mDefaultKeySsb, 0);
249    }
250
251    private void checkForLocaleChange() {
252        final LocaleConfiguration localeConfiguration = new LocaleConfiguration();
253        readConfiguration(this, localeConfiguration);
254
255        final Configuration configuration = getResources().getConfiguration();
256
257        final String previousLocale = localeConfiguration.locale;
258        final String locale = configuration.locale.toString();
259
260        final int previousMcc = localeConfiguration.mcc;
261        final int mcc = configuration.mcc;
262
263        final int previousMnc = localeConfiguration.mnc;
264        final int mnc = configuration.mnc;
265
266        mLocaleChanged = !locale.equals(previousLocale) || mcc != previousMcc || mnc != previousMnc;
267
268        if (mLocaleChanged) {
269            localeConfiguration.locale = locale;
270            localeConfiguration.mcc = mcc;
271            localeConfiguration.mnc = mnc;
272
273            writeConfiguration(this, localeConfiguration);
274        }
275    }
276
277    private static class LocaleConfiguration {
278        public String locale;
279        public int mcc = -1;
280        public int mnc = -1;
281    }
282
283    private static void readConfiguration(Context context, LocaleConfiguration configuration) {
284        DataInputStream in = null;
285        try {
286            in = new DataInputStream(context.openFileInput(PREFERENCES));
287            configuration.locale = in.readUTF();
288            configuration.mcc = in.readInt();
289            configuration.mnc = in.readInt();
290        } catch (FileNotFoundException e) {
291            // Ignore
292        } catch (IOException e) {
293            // Ignore
294        } finally {
295            if (in != null) {
296                try {
297                    in.close();
298                } catch (IOException e) {
299                    // Ignore
300                }
301            }
302        }
303    }
304
305    private static void writeConfiguration(Context context, LocaleConfiguration configuration) {
306        DataOutputStream out = null;
307        try {
308            out = new DataOutputStream(context.openFileOutput(PREFERENCES, MODE_PRIVATE));
309            out.writeUTF(configuration.locale);
310            out.writeInt(configuration.mcc);
311            out.writeInt(configuration.mnc);
312            out.flush();
313        } catch (FileNotFoundException e) {
314            // Ignore
315        } catch (IOException e) {
316            //noinspection ResultOfMethodCallIgnored
317            context.getFileStreamPath(PREFERENCES).delete();
318        } finally {
319            if (out != null) {
320                try {
321                    out.close();
322                } catch (IOException e) {
323                    // Ignore
324                }
325            }
326        }
327    }
328
329    static int getScreen() {
330        synchronized (sLock) {
331            return sScreen;
332        }
333    }
334
335    static void setScreen(int screen) {
336        synchronized (sLock) {
337            sScreen = screen;
338        }
339    }
340
341    private void startLoaders() {
342        boolean loadApplications = sModel.loadApplications(true, this, mLocaleChanged);
343        sModel.loadUserItems(!mLocaleChanged, this, mLocaleChanged, loadApplications);
344
345        mRestoring = false;
346    }
347
348    private void setWallpaperDimension() {
349        WallpaperManager wpm = (WallpaperManager)getSystemService(WALLPAPER_SERVICE);
350
351        Display display = getWindowManager().getDefaultDisplay();
352        boolean isPortrait = display.getWidth() < display.getHeight();
353
354        final int width = isPortrait ? display.getWidth() : display.getHeight();
355        final int height = isPortrait ? display.getHeight() : display.getWidth();
356        wpm.suggestDesiredDimensions(width * WALLPAPER_SCREENS_SPAN, height);
357    }
358
359    @Override
360    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
361        mWaitingForResult = false;
362
363        // The pattern used here is that a user PICKs a specific application,
364        // which, depending on the target, might need to CREATE the actual target.
365
366        // For example, the user would PICK_SHORTCUT for "Music playlist", and we
367        // launch over to the Music app to actually CREATE_SHORTCUT.
368
369        if (resultCode == RESULT_OK && mAddItemCellInfo != null) {
370            switch (requestCode) {
371                case REQUEST_PICK_APPLICATION:
372                    completeAddApplication(this, data, mAddItemCellInfo, !mDesktopLocked);
373                    break;
374                case REQUEST_PICK_SHORTCUT:
375                    processShortcut(data, REQUEST_PICK_APPLICATION, REQUEST_CREATE_SHORTCUT);
376                    break;
377                case REQUEST_CREATE_SHORTCUT:
378                    completeAddShortcut(data, mAddItemCellInfo, !mDesktopLocked);
379                    break;
380                case REQUEST_PICK_LIVE_FOLDER:
381                    addLiveFolder(data);
382                    break;
383                case REQUEST_CREATE_LIVE_FOLDER:
384                    completeAddLiveFolder(data, mAddItemCellInfo, !mDesktopLocked);
385                    break;
386                case REQUEST_PICK_APPWIDGET:
387                    addAppWidget(data);
388                    break;
389                case REQUEST_CREATE_APPWIDGET:
390                    completeAddAppWidget(data, mAddItemCellInfo, !mDesktopLocked);
391                    break;
392            }
393        } else if (requestCode == REQUEST_PICK_APPWIDGET &&
394                resultCode == RESULT_CANCELED && 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            startLoaders();
409        }
410
411        // If this was a new intent (i.e., the mIsNewIntent flag got set to true by
412        // onNewIntent), then close the search dialog if needed, because it probably
413        // came from the user pressing 'home' (rather than, for example, pressing 'back').
414        if (mIsNewIntent) {
415            // Post to a handler so that this happens after the search dialog tries to open
416            // itself again.
417            mWorkspace.post(new Runnable() {
418                public void run() {
419                    ISearchManager searchManagerService = ISearchManager.Stub.asInterface(
420                            ServiceManager.getService(Context.SEARCH_SERVICE));
421                    try {
422                        searchManagerService.stopSearch();
423                    } catch (RemoteException e) {
424                        e(LOG_TAG, "error stopping search", e);
425                    }
426                }
427            });
428        }
429
430        mIsNewIntent = false;
431    }
432
433    @Override
434    protected void onPause() {
435        super.onPause();
436        closeAllAppsDialog(false);
437    }
438
439    @Override
440    public Object onRetainNonConfigurationInstance() {
441        // Flag any binder to stop early before switching
442        if (mBinder != null) {
443            mBinder.mTerminate = true;
444        }
445
446        if (PROFILE_ROTATE) {
447            android.os.Debug.startMethodTracing("/sdcard/launcher-rotate");
448        }
449        return null;
450    }
451
452    private boolean acceptFilter() {
453        final InputMethodManager inputManager = (InputMethodManager)
454                getSystemService(Context.INPUT_METHOD_SERVICE);
455        return !inputManager.isFullscreenMode();
456    }
457
458    @Override
459    public boolean onKeyDown(int keyCode, KeyEvent event) {
460        boolean handled = super.onKeyDown(keyCode, event);
461        if (!handled && acceptFilter() && keyCode != KeyEvent.KEYCODE_ENTER) {
462            boolean gotKey = TextKeyListener.getInstance().onKeyDown(mWorkspace, mDefaultKeySsb,
463                    keyCode, event);
464            if (gotKey && mDefaultKeySsb != null && mDefaultKeySsb.length() > 0) {
465                // something usable has been typed - start a search
466                // the typed text will be retrieved and cleared by
467                // showSearchDialog()
468                // If there are multiple keystrokes before the search dialog takes focus,
469                // onSearchRequested() will be called for every keystroke,
470                // but it is idempotent, so it's fine.
471                return onSearchRequested();
472            }
473        }
474
475        return handled;
476    }
477
478    private String getTypedText() {
479        return mDefaultKeySsb.toString();
480    }
481
482    private void clearTypedText() {
483        mDefaultKeySsb.clear();
484        mDefaultKeySsb.clearSpans();
485        Selection.setSelection(mDefaultKeySsb, 0);
486    }
487
488    /**
489     * Restores the previous state, if it exists.
490     *
491     * @param savedState The previous state.
492     */
493    private void restoreState(Bundle savedState) {
494        if (savedState == null) {
495            return;
496        }
497
498        final int currentScreen = savedState.getInt(RUNTIME_STATE_CURRENT_SCREEN, -1);
499        if (currentScreen > -1) {
500            mWorkspace.setCurrentScreen(currentScreen);
501        }
502
503        final int addScreen = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SCREEN, -1);
504        if (addScreen > -1) {
505            mAddItemCellInfo = new CellLayout.CellInfo();
506            final CellLayout.CellInfo addItemCellInfo = mAddItemCellInfo;
507            addItemCellInfo.valid = true;
508            addItemCellInfo.screen = addScreen;
509            addItemCellInfo.cellX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_X);
510            addItemCellInfo.cellY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_Y);
511            addItemCellInfo.spanX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_X);
512            addItemCellInfo.spanY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y);
513            addItemCellInfo.findVacantCellsFromOccupied(
514                    savedState.getBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS),
515                    savedState.getInt(RUNTIME_STATE_PENDING_ADD_COUNT_X),
516                    savedState.getInt(RUNTIME_STATE_PENDING_ADD_COUNT_Y));
517            mRestoring = true;
518        }
519
520        boolean renameFolder = savedState.getBoolean(RUNTIME_STATE_PENDING_FOLDER_RENAME, false);
521        if (renameFolder) {
522            long id = savedState.getLong(RUNTIME_STATE_PENDING_FOLDER_RENAME_ID);
523            mFolderInfo = sModel.getFolderById(this, id);
524            mRestoring = true;
525        }
526    }
527
528    /**
529     * Finds all the views we need and configure them properly.
530     */
531    private void setupViews() {
532        mDragController = new DragController(this);
533        DragController dragController = mDragController;
534
535        mDragLayer = (DragLayer) findViewById(R.id.drag_layer);
536        final DragLayer dragLayer = mDragLayer;
537        dragLayer.setDragController(dragController);
538
539        mWallpaperView = (WallpaperView) findViewById(R.id.wallpaper);
540        final WallpaperView wallpaper = mWallpaperView;
541
542        mWorkspace = (Workspace) dragLayer.findViewById(R.id.workspace);
543        final Workspace workspace = mWorkspace;
544
545        final DeleteZone deleteZone = (DeleteZone) dragLayer.findViewById(R.id.delete_zone);
546
547        mHandleView = (HandleView) findViewById(R.id.all_apps);
548        mHandleView.setLauncher(this);
549        mHandleView.setOnClickListener(this);
550        mHandleIcon = (TransitionDrawable) mHandleView.getDrawable();
551        mHandleIcon.setCrossFadeEnabled(true);
552
553        workspace.setOnLongClickListener(this);
554        workspace.setDragController(dragController);
555        workspace.setLauncher(this);
556        workspace.setWallpaper(wallpaper);
557
558        loadWallpaper();
559        wallpaper.setScreenCount(workspace.getScreenCount());
560
561        deleteZone.setLauncher(this);
562        deleteZone.setDragController(dragController);
563        deleteZone.setHandle(mHandleView);
564
565        dragController.setDragScoller(workspace);
566        dragController.setDragListener(deleteZone);
567        dragController.setScrollView(dragLayer);
568
569        // The order here is bottom to top.
570        dragController.addDropTarget(workspace);
571        dragController.addDropTarget(deleteZone);
572    }
573
574    /**
575     * Creates a view representing a shortcut.
576     *
577     * @param info The data structure describing the shortcut.
578     *
579     * @return A View inflated from R.layout.application.
580     */
581    View createShortcut(ApplicationInfo info) {
582        return createShortcut(R.layout.application,
583                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), info);
584    }
585
586    /**
587     * Creates a view representing a shortcut inflated from the specified resource.
588     *
589     * @param layoutResId The id of the XML layout used to create the shortcut.
590     * @param parent The group the shortcut belongs to.
591     * @param info The data structure describing the shortcut.
592     *
593     * @return A View inflated from layoutResId.
594     */
595    View createShortcut(int layoutResId, ViewGroup parent, ApplicationInfo info) {
596        TextView favorite = (TextView) mInflater.inflate(layoutResId, parent, false);
597
598        if (!info.filtered) {
599            info.icon = Utilities.createIconThumbnail(info.icon, this);
600            info.filtered = true;
601        }
602
603        favorite.setCompoundDrawablesWithIntrinsicBounds(null, info.icon, null, null);
604        favorite.setText(info.title);
605        favorite.setTag(info);
606        favorite.setOnClickListener(this);
607
608        return favorite;
609    }
610
611    /**
612     * Add an application shortcut to the workspace.
613     *
614     * @param data The intent describing the application.
615     * @param cellInfo The position on screen where to create the shortcut.
616     */
617    void completeAddApplication(Context context, Intent data, CellLayout.CellInfo cellInfo,
618            boolean insertAtFirst) {
619        cellInfo.screen = mWorkspace.getCurrentScreen();
620        if (!findSingleSlot(cellInfo)) return;
621
622        final ApplicationInfo info = infoFromApplicationIntent(context, data);
623        if (info != null) {
624            mWorkspace.addApplicationShortcut(info, cellInfo, insertAtFirst);
625        }
626    }
627
628    private static ApplicationInfo infoFromApplicationIntent(Context context, Intent data) {
629        ComponentName component = data.getComponent();
630        PackageManager packageManager = context.getPackageManager();
631        ActivityInfo activityInfo = null;
632        try {
633            activityInfo = packageManager.getActivityInfo(component, 0 /* no flags */);
634        } catch (NameNotFoundException e) {
635            e(LOG_TAG, "Couldn't find ActivityInfo for selected application", e);
636        }
637
638        if (activityInfo != null) {
639            ApplicationInfo itemInfo = new ApplicationInfo();
640
641            itemInfo.title = activityInfo.loadLabel(packageManager);
642            if (itemInfo.title == null) {
643                itemInfo.title = activityInfo.name;
644            }
645
646            itemInfo.setActivity(component, Intent.FLAG_ACTIVITY_NEW_TASK |
647                    Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
648            itemInfo.icon = activityInfo.loadIcon(packageManager);
649            itemInfo.container = ItemInfo.NO_ID;
650
651            return itemInfo;
652        }
653
654        return null;
655    }
656
657    /**
658     * Add a shortcut to the workspace.
659     *
660     * @param data The intent describing the shortcut.
661     * @param cellInfo The position on screen where to create the shortcut.
662     * @param insertAtFirst
663     */
664    private void completeAddShortcut(Intent data, CellLayout.CellInfo cellInfo,
665            boolean insertAtFirst) {
666        cellInfo.screen = mWorkspace.getCurrentScreen();
667        if (!findSingleSlot(cellInfo)) return;
668
669        final ApplicationInfo info = addShortcut(this, data, cellInfo, false);
670
671        if (!mRestoring) {
672            sModel.addDesktopItem(info);
673
674            final View view = createShortcut(info);
675            mWorkspace.addInCurrentScreen(view, cellInfo.cellX, cellInfo.cellY, 1, 1, insertAtFirst);
676        } else if (sModel.isDesktopLoaded()) {
677            sModel.addDesktopItem(info);
678        }
679    }
680
681
682    /**
683     * Add a widget to the workspace.
684     *
685     * @param data The intent describing the appWidgetId.
686     * @param cellInfo The position on screen where to create the widget.
687     */
688    private void completeAddAppWidget(Intent data, CellLayout.CellInfo cellInfo,
689            boolean insertAtFirst) {
690
691        Bundle extras = data.getExtras();
692        int appWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
693
694        d(LOG_TAG, "dumping extras content="+extras.toString());
695
696        AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
697
698        // Calculate the grid spans needed to fit this widget
699        CellLayout layout = (CellLayout) mWorkspace.getChildAt(cellInfo.screen);
700        int[] spans = layout.rectToCell(appWidgetInfo.minWidth, appWidgetInfo.minHeight);
701
702        // Try finding open space on Launcher screen
703        final int[] xy = mCellCoordinates;
704        if (!findSlot(cellInfo, xy, spans[0], spans[1])) return;
705
706        // Build Launcher-specific widget info and save to database
707        LauncherAppWidgetInfo launcherInfo = new LauncherAppWidgetInfo(appWidgetId);
708        launcherInfo.spanX = spans[0];
709        launcherInfo.spanY = spans[1];
710
711        LauncherModel.addItemToDatabase(this, launcherInfo,
712                LauncherSettings.Favorites.CONTAINER_DESKTOP,
713                mWorkspace.getCurrentScreen(), xy[0], xy[1], false);
714
715        if (!mRestoring) {
716            sModel.addDesktopAppWidget(launcherInfo);
717
718            // Perform actual inflation because we're live
719            launcherInfo.hostView = mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
720
721            launcherInfo.hostView.setAppWidget(appWidgetId, appWidgetInfo);
722            launcherInfo.hostView.setTag(launcherInfo);
723
724            mWorkspace.addInCurrentScreen(launcherInfo.hostView, xy[0], xy[1],
725                    launcherInfo.spanX, launcherInfo.spanY, insertAtFirst);
726        } else if (sModel.isDesktopLoaded()) {
727            sModel.addDesktopAppWidget(launcherInfo);
728        }
729    }
730
731    public LauncherAppWidgetHost getAppWidgetHost() {
732        return mAppWidgetHost;
733    }
734
735    static ApplicationInfo addShortcut(Context context, Intent data,
736            CellLayout.CellInfo cellInfo, boolean notify) {
737
738        final ApplicationInfo info = infoFromShortcutIntent(context, data);
739        LauncherModel.addItemToDatabase(context, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
740                cellInfo.screen, cellInfo.cellX, cellInfo.cellY, notify);
741
742        return info;
743    }
744
745    private static ApplicationInfo infoFromShortcutIntent(Context context, Intent data) {
746        Intent intent = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_INTENT);
747        String name = data.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
748        Bitmap bitmap = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_ICON);
749
750        Drawable icon = null;
751        boolean filtered = false;
752        boolean customIcon = false;
753        ShortcutIconResource iconResource = null;
754
755        if (bitmap != null) {
756            icon = new FastBitmapDrawable(Utilities.createBitmapThumbnail(bitmap, context));
757            filtered = true;
758            customIcon = true;
759        } else {
760            Parcelable extra = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE);
761            if (extra != null && extra instanceof ShortcutIconResource) {
762                try {
763                    iconResource = (ShortcutIconResource) extra;
764                    final PackageManager packageManager = context.getPackageManager();
765                    Resources resources = packageManager.getResourcesForApplication(
766                            iconResource.packageName);
767                    final int id = resources.getIdentifier(iconResource.resourceName, null, null);
768                    icon = resources.getDrawable(id);
769                } catch (Exception e) {
770                    w(LOG_TAG, "Could not load shortcut icon: " + extra);
771                }
772            }
773        }
774
775        if (icon == null) {
776            icon = context.getPackageManager().getDefaultActivityIcon();
777        }
778
779        final ApplicationInfo info = new ApplicationInfo();
780        info.icon = icon;
781        info.filtered = filtered;
782        info.title = name;
783        info.intent = intent;
784        info.customIcon = customIcon;
785        info.iconResource = iconResource;
786
787        return info;
788    }
789
790    @Override
791    protected void onNewIntent(Intent intent) {
792        super.onNewIntent(intent);
793
794        // Close the menu
795        if (Intent.ACTION_MAIN.equals(intent.getAction())) {
796            getWindow().closeAllPanels();
797
798            // Set this flag so that onResume knows to close the search dialog if it's open,
799            // because this was a new intent (thus a press of 'home' or some such) rather than
800            // for example onResume being called when the user pressed the 'back' button.
801            mIsNewIntent = true;
802
803            try {
804                dismissDialog(DIALOG_CREATE_SHORTCUT);
805                // Unlock the workspace if the dialog was showing
806                mWorkspace.unlock();
807            } catch (Exception e) {
808                // An exception is thrown if the dialog is not visible, which is fine
809            }
810
811            try {
812                dismissDialog(DIALOG_RENAME_FOLDER);
813                // Unlock the workspace if the dialog was showing
814                mWorkspace.unlock();
815            } catch (Exception e) {
816                // An exception is thrown if the dialog is not visible, which is fine
817            }
818
819            if ((intent.getFlags() & Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT) !=
820                    Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT) {
821
822                if (!mWorkspace.isDefaultScreenShowing()) {
823                    mWorkspace.moveToDefaultScreen();
824                }
825
826                closeAllAppsDialog(true);
827
828                final View v = getWindow().peekDecorView();
829                if (v != null && v.getWindowToken() != null) {
830                    InputMethodManager imm = (InputMethodManager)getSystemService(
831                            INPUT_METHOD_SERVICE);
832                    imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
833                }
834            } else {
835                closeAllAppsDialog(false);
836            }
837        }
838    }
839
840    @Override
841    protected void onRestoreInstanceState(Bundle savedInstanceState) {
842        // Do not call super here
843        mSavedInstanceState = savedInstanceState;
844    }
845
846    @Override
847    protected void onSaveInstanceState(Bundle outState) {
848        outState.putInt(RUNTIME_STATE_CURRENT_SCREEN, mWorkspace.getCurrentScreen());
849
850        final ArrayList<Folder> folders = mWorkspace.getOpenFolders();
851        if (folders.size() > 0) {
852            final int count = folders.size();
853            long[] ids = new long[count];
854            for (int i = 0; i < count; i++) {
855                final FolderInfo info = folders.get(i).getInfo();
856                ids[i] = info.id;
857            }
858            outState.putLongArray(RUNTIME_STATE_USER_FOLDERS, ids);
859        } else {
860            super.onSaveInstanceState(outState);
861        }
862
863        final boolean isConfigurationChange = getChangingConfigurations() != 0;
864
865        // When the drawer is opened and we are saving the state because of a
866        // configuration change
867        if (mAllAppsDialog.isOpen && isConfigurationChange) {
868            outState.putBoolean(RUNTIME_STATE_ALL_APPS_FOLDER, true);
869        }
870
871        if (mAddItemCellInfo != null && mAddItemCellInfo.valid && mWaitingForResult) {
872            final CellLayout.CellInfo addItemCellInfo = mAddItemCellInfo;
873            final CellLayout layout = (CellLayout) mWorkspace.getChildAt(addItemCellInfo.screen);
874
875            outState.putInt(RUNTIME_STATE_PENDING_ADD_SCREEN, addItemCellInfo.screen);
876            outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_X, addItemCellInfo.cellX);
877            outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_Y, addItemCellInfo.cellY);
878            outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_X, addItemCellInfo.spanX);
879            outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y, addItemCellInfo.spanY);
880            outState.putInt(RUNTIME_STATE_PENDING_ADD_COUNT_X, layout.getCountX());
881            outState.putInt(RUNTIME_STATE_PENDING_ADD_COUNT_Y, layout.getCountY());
882            outState.putBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS,
883                   layout.getOccupiedCells());
884        }
885
886        if (mFolderInfo != null && mWaitingForResult) {
887            outState.putBoolean(RUNTIME_STATE_PENDING_FOLDER_RENAME, true);
888            outState.putLong(RUNTIME_STATE_PENDING_FOLDER_RENAME_ID, mFolderInfo.id);
889        }
890    }
891
892    @Override
893    public void onDestroy() {
894        mDestroyed = true;
895
896        super.onDestroy();
897
898        try {
899            mAppWidgetHost.stopListening();
900        } catch (NullPointerException ex) {
901            w(LOG_TAG, "problem while stopping AppWidgetHost during Launcher destruction", ex);
902        }
903
904        TextKeyListener.getInstance().release();
905
906        // TODO mAllAppsGrid.setAdapter(null);
907        sModel.unbind();
908        sModel.abortLoaders();
909
910        getContentResolver().unregisterContentObserver(mObserver);
911        unregisterReceiver(mApplicationsReceiver);
912    }
913
914    @Override
915    public void startActivityForResult(Intent intent, int requestCode) {
916        if (requestCode >= 0) mWaitingForResult = true;
917        super.startActivityForResult(intent, requestCode);
918    }
919
920    @Override
921    public void startSearch(String initialQuery, boolean selectInitialQuery,
922            Bundle appSearchData, boolean globalSearch) {
923
924        closeAllAppsDialog(false);
925
926        // Slide the search widget to the top, if it's on the current screen,
927        // otherwise show the search dialog immediately.
928        Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
929        if (searchWidget == null) {
930            showSearchDialog(initialQuery, selectInitialQuery, appSearchData, globalSearch);
931        } else {
932            searchWidget.startSearch(initialQuery, selectInitialQuery, appSearchData, globalSearch);
933            // show the currently typed text in the search widget while sliding
934            searchWidget.setQuery(getTypedText());
935        }
936    }
937
938    /**
939     * Show the search dialog immediately, without changing the search widget.
940     *
941     * @see Activity#startSearch(String, boolean, android.os.Bundle, boolean)
942     */
943    void showSearchDialog(String initialQuery, boolean selectInitialQuery,
944            Bundle appSearchData, boolean globalSearch) {
945
946        if (initialQuery == null) {
947            // Use any text typed in the launcher as the initial query
948            initialQuery = getTypedText();
949            clearTypedText();
950        }
951        if (appSearchData == null) {
952            appSearchData = new Bundle();
953            appSearchData.putString(SearchManager.SOURCE, "launcher-search");
954        }
955
956        final SearchManager searchManager =
957                (SearchManager) getSystemService(Context.SEARCH_SERVICE);
958
959        final Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
960        if (searchWidget != null) {
961            // This gets called when the user leaves the search dialog to go back to
962            // the Launcher.
963            searchManager.setOnCancelListener(new SearchManager.OnCancelListener() {
964                public void onCancel() {
965                    searchManager.setOnCancelListener(null);
966                    stopSearch();
967                }
968            });
969        }
970
971        searchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(),
972            appSearchData, globalSearch);
973    }
974
975    /**
976     * Cancel search dialog if it is open.
977     */
978    void stopSearch() {
979        // Close search dialog
980        SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
981        searchManager.stopSearch();
982        // Restore search widget to its normal position
983        Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
984        if (searchWidget != null) {
985            searchWidget.stopSearch(false);
986        }
987    }
988
989    @Override
990    public boolean onCreateOptionsMenu(Menu menu) {
991        if (mDesktopLocked) return false;
992
993        super.onCreateOptionsMenu(menu);
994        menu.add(MENU_GROUP_ADD, MENU_ADD, 0, R.string.menu_add)
995                .setIcon(android.R.drawable.ic_menu_add)
996                .setAlphabeticShortcut('A');
997        menu.add(0, MENU_WALLPAPER_SETTINGS, 0, R.string.menu_wallpaper)
998                 .setIcon(android.R.drawable.ic_menu_gallery)
999                 .setAlphabeticShortcut('W');
1000        menu.add(0, MENU_SEARCH, 0, R.string.menu_search)
1001                .setIcon(android.R.drawable.ic_search_category_default)
1002                .setAlphabeticShortcut(SearchManager.MENU_KEY);
1003        menu.add(0, MENU_NOTIFICATIONS, 0, R.string.menu_notifications)
1004                .setIcon(com.android.internal.R.drawable.ic_menu_notifications)
1005                .setAlphabeticShortcut('N');
1006
1007        final Intent settings = new Intent(android.provider.Settings.ACTION_SETTINGS);
1008        settings.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
1009                Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
1010
1011        menu.add(0, MENU_SETTINGS, 0, R.string.menu_settings)
1012                .setIcon(android.R.drawable.ic_menu_preferences).setAlphabeticShortcut('P')
1013                .setIntent(settings);
1014
1015        return true;
1016    }
1017
1018    @Override
1019    public boolean onPrepareOptionsMenu(Menu menu) {
1020        super.onPrepareOptionsMenu(menu);
1021
1022        mMenuAddInfo = mWorkspace.findAllVacantCells(null);
1023        menu.setGroupEnabled(MENU_GROUP_ADD, mMenuAddInfo != null && mMenuAddInfo.valid);
1024
1025        return true;
1026    }
1027
1028    @Override
1029    public boolean onOptionsItemSelected(MenuItem item) {
1030        switch (item.getItemId()) {
1031            case MENU_ADD:
1032                addItems();
1033                return true;
1034            case MENU_WALLPAPER_SETTINGS:
1035                startWallpaper();
1036                return true;
1037            case MENU_SEARCH:
1038                onSearchRequested();
1039                return true;
1040            case MENU_NOTIFICATIONS:
1041                showNotifications();
1042                return true;
1043        }
1044
1045        return super.onOptionsItemSelected(item);
1046    }
1047
1048    /**
1049     * Indicates that we want global search for this activity by setting the globalSearch
1050     * argument for {@link #startSearch} to true.
1051     */
1052
1053    @Override
1054    public boolean onSearchRequested() {
1055        startSearch(null, false, null, true);
1056        return true;
1057    }
1058
1059    private void addItems() {
1060        showAddDialog(mMenuAddInfo);
1061    }
1062
1063    private void removeShortcutsForPackage(String packageName) {
1064        if (packageName != null && packageName.length() > 0) {
1065            mWorkspace.removeShortcutsForPackage(packageName);
1066        }
1067    }
1068
1069    private void updateShortcutsForPackage(String packageName) {
1070        if (packageName != null && packageName.length() > 0) {
1071            mWorkspace.updateShortcutsForPackage(packageName);
1072        }
1073    }
1074
1075    void addAppWidget(Intent data) {
1076        // TODO: catch bad widget exception when sent
1077        int appWidgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
1078
1079        String customWidget = data.getStringExtra(EXTRA_CUSTOM_WIDGET);
1080        if (SEARCH_WIDGET.equals(customWidget)) {
1081            // We don't need this any more, since this isn't a real app widget.
1082            mAppWidgetHost.deleteAppWidgetId(appWidgetId);
1083            // add the search widget
1084            addSearch();
1085        } else {
1086            AppWidgetProviderInfo appWidget = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
1087
1088            if (appWidget.configure != null) {
1089                // Launch over to configure widget, if needed
1090                Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_CONFIGURE);
1091                intent.setComponent(appWidget.configure);
1092                intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
1093
1094                startActivityForResult(intent, REQUEST_CREATE_APPWIDGET);
1095            } else {
1096                // Otherwise just add it
1097                onActivityResult(REQUEST_CREATE_APPWIDGET, Activity.RESULT_OK, data);
1098            }
1099        }
1100    }
1101
1102    void addSearch() {
1103        final Widget info = Widget.makeSearch();
1104        final CellLayout.CellInfo cellInfo = mAddItemCellInfo;
1105
1106        final int[] xy = mCellCoordinates;
1107        final int spanX = info.spanX;
1108        final int spanY = info.spanY;
1109
1110        if (!findSlot(cellInfo, xy, spanX, spanY)) return;
1111
1112        sModel.addDesktopItem(info);
1113        LauncherModel.addItemToDatabase(this, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
1114        mWorkspace.getCurrentScreen(), xy[0], xy[1], false);
1115
1116        final View view = mInflater.inflate(info.layoutResource, null);
1117        view.setTag(info);
1118        Search search = (Search) view.findViewById(R.id.widget_search);
1119        search.setLauncher(this);
1120
1121        mWorkspace.addInCurrentScreen(view, xy[0], xy[1], info.spanX, spanY);
1122    }
1123
1124    void processShortcut(Intent intent, int requestCodeApplication, int requestCodeShortcut) {
1125        // Handle case where user selected "Applications"
1126        String applicationName = getResources().getString(R.string.group_applications);
1127        String shortcutName = intent.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
1128
1129        if (applicationName != null && applicationName.equals(shortcutName)) {
1130            Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
1131            mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
1132
1133            Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1134            pickIntent.putExtra(Intent.EXTRA_INTENT, mainIntent);
1135            startActivityForResult(pickIntent, requestCodeApplication);
1136        } else {
1137            startActivityForResult(intent, requestCodeShortcut);
1138        }
1139    }
1140
1141    void addLiveFolder(Intent intent) {
1142        // Handle case where user selected "Folder"
1143        String folderName = getResources().getString(R.string.group_folder);
1144        String shortcutName = intent.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
1145
1146        if (folderName != null && folderName.equals(shortcutName)) {
1147            addFolder(!mDesktopLocked);
1148        } else {
1149            startActivityForResult(intent, REQUEST_CREATE_LIVE_FOLDER);
1150        }
1151    }
1152
1153    void addFolder(boolean insertAtFirst) {
1154        UserFolderInfo folderInfo = new UserFolderInfo();
1155        folderInfo.title = getText(R.string.folder_name);
1156
1157        CellLayout.CellInfo cellInfo = mAddItemCellInfo;
1158        cellInfo.screen = mWorkspace.getCurrentScreen();
1159        if (!findSingleSlot(cellInfo)) return;
1160
1161        // Update the model
1162        LauncherModel.addItemToDatabase(this, folderInfo, LauncherSettings.Favorites.CONTAINER_DESKTOP,
1163                mWorkspace.getCurrentScreen(), cellInfo.cellX, cellInfo.cellY, false);
1164        sModel.addDesktopItem(folderInfo);
1165        sModel.addFolder(folderInfo);
1166
1167        // Create the view
1168        FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon, this,
1169                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), folderInfo);
1170        mWorkspace.addInCurrentScreen(newFolder,
1171                cellInfo.cellX, cellInfo.cellY, 1, 1, insertAtFirst);
1172    }
1173
1174    private void completeAddLiveFolder(Intent data, CellLayout.CellInfo cellInfo,
1175            boolean insertAtFirst) {
1176        cellInfo.screen = mWorkspace.getCurrentScreen();
1177        if (!findSingleSlot(cellInfo)) return;
1178
1179        final LiveFolderInfo info = addLiveFolder(this, data, cellInfo, false);
1180
1181        if (!mRestoring) {
1182            sModel.addDesktopItem(info);
1183
1184            final View view = LiveFolderIcon.fromXml(R.layout.live_folder_icon, this,
1185                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), info);
1186            mWorkspace.addInCurrentScreen(view, cellInfo.cellX, cellInfo.cellY, 1, 1, insertAtFirst);
1187        } else if (sModel.isDesktopLoaded()) {
1188            sModel.addDesktopItem(info);
1189        }
1190    }
1191
1192    static LiveFolderInfo addLiveFolder(Context context, Intent data,
1193            CellLayout.CellInfo cellInfo, boolean notify) {
1194
1195        Intent baseIntent = data.getParcelableExtra(LiveFolders.EXTRA_LIVE_FOLDER_BASE_INTENT);
1196        String name = data.getStringExtra(LiveFolders.EXTRA_LIVE_FOLDER_NAME);
1197
1198        Drawable icon = null;
1199        boolean filtered = false;
1200        Intent.ShortcutIconResource iconResource = null;
1201
1202        Parcelable extra = data.getParcelableExtra(LiveFolders.EXTRA_LIVE_FOLDER_ICON);
1203        if (extra != null && extra instanceof Intent.ShortcutIconResource) {
1204            try {
1205                iconResource = (Intent.ShortcutIconResource) extra;
1206                final PackageManager packageManager = context.getPackageManager();
1207                Resources resources = packageManager.getResourcesForApplication(
1208                        iconResource.packageName);
1209                final int id = resources.getIdentifier(iconResource.resourceName, null, null);
1210                icon = resources.getDrawable(id);
1211            } catch (Exception e) {
1212                w(LOG_TAG, "Could not load live folder icon: " + extra);
1213            }
1214        }
1215
1216        if (icon == null) {
1217            icon = context.getResources().getDrawable(R.drawable.ic_launcher_folder);
1218        }
1219
1220        final LiveFolderInfo info = new LiveFolderInfo();
1221        info.icon = icon;
1222        info.filtered = filtered;
1223        info.title = name;
1224        info.iconResource = iconResource;
1225        info.uri = data.getData();
1226        info.baseIntent = baseIntent;
1227        info.displayMode = data.getIntExtra(LiveFolders.EXTRA_LIVE_FOLDER_DISPLAY_MODE,
1228                LiveFolders.DISPLAY_MODE_GRID);
1229
1230        LauncherModel.addItemToDatabase(context, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
1231                cellInfo.screen, cellInfo.cellX, cellInfo.cellY, notify);
1232        sModel.addFolder(info);
1233
1234        return info;
1235    }
1236
1237    private boolean findSingleSlot(CellLayout.CellInfo cellInfo) {
1238        final int[] xy = new int[2];
1239        if (findSlot(cellInfo, xy, 1, 1)) {
1240            cellInfo.cellX = xy[0];
1241            cellInfo.cellY = xy[1];
1242            return true;
1243        }
1244        return false;
1245    }
1246
1247    private boolean findSlot(CellLayout.CellInfo cellInfo, int[] xy, int spanX, int spanY) {
1248        if (!cellInfo.findCellForSpan(xy, spanX, spanY)) {
1249            boolean[] occupied = mSavedState != null ?
1250                    mSavedState.getBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS) : null;
1251            cellInfo = mWorkspace.findAllVacantCells(occupied);
1252            if (!cellInfo.findCellForSpan(xy, spanX, spanY)) {
1253                Toast.makeText(this, getString(R.string.out_of_space), Toast.LENGTH_SHORT).show();
1254                return false;
1255            }
1256        }
1257        return true;
1258    }
1259
1260    private void showNotifications() {
1261        final StatusBarManager statusBar = (StatusBarManager) getSystemService(STATUS_BAR_SERVICE);
1262        if (statusBar != null) {
1263            statusBar.expand();
1264        }
1265    }
1266
1267    private void startWallpaper() {
1268        final Intent pickWallpaper = new Intent(Intent.ACTION_SET_WALLPAPER);
1269        startActivity(Intent.createChooser(pickWallpaper, getString(R.string.chooser_wallpaper)));
1270    }
1271
1272    /**
1273     * Registers various intent receivers. The current implementation registers
1274     * only a wallpaper intent receiver to let other applications change the
1275     * wallpaper.
1276     */
1277    private void registerIntentReceivers() {
1278        if (sWallpaperReceiver == null) {
1279            final Application application = getApplication();
1280
1281            sWallpaperReceiver = new WallpaperIntentReceiver(application, this);
1282
1283            IntentFilter filter = new IntentFilter(Intent.ACTION_WALLPAPER_CHANGED);
1284            application.registerReceiver(sWallpaperReceiver, filter);
1285        } else {
1286            sWallpaperReceiver.setLauncher(this);
1287        }
1288
1289        IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED);
1290        filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
1291        filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
1292        filter.addDataScheme("package");
1293        registerReceiver(mApplicationsReceiver, filter);
1294    }
1295
1296    /**
1297     * Registers various content observers. The current implementation registers
1298     * only a favorites observer to keep track of the favorites applications.
1299     */
1300    private void registerContentObservers() {
1301        ContentResolver resolver = getContentResolver();
1302        resolver.registerContentObserver(LauncherSettings.Favorites.CONTENT_URI, true, mObserver);
1303    }
1304
1305    @Override
1306    public void onWindowFocusChanged(boolean hasFocus) {
1307        super.onWindowFocusChanged(hasFocus);
1308        if (!hasFocus) {
1309            mBackDown = mHomeDown = false;
1310        }
1311    }
1312
1313    @Override
1314    public boolean dispatchKeyEvent(KeyEvent event) {
1315        if (event.getAction() == KeyEvent.ACTION_DOWN) {
1316            switch (event.getKeyCode()) {
1317                case KeyEvent.KEYCODE_BACK:
1318                    mBackDown = true;
1319                    return true;
1320                case KeyEvent.KEYCODE_HOME:
1321                    mHomeDown = true;
1322                    return true;
1323            }
1324        } else if (event.getAction() == KeyEvent.ACTION_UP) {
1325            switch (event.getKeyCode()) {
1326                case KeyEvent.KEYCODE_BACK:
1327                    if (!event.isCanceled()) {
1328                        mWorkspace.dispatchKeyEvent(event);
1329                        if (mAllAppsDialog.isOpen) {
1330                            closeAllAppsDialog(true);
1331                        } else {
1332                            closeFolder();
1333                        }
1334                    }
1335                    mBackDown = false;
1336                    return true;
1337                case KeyEvent.KEYCODE_HOME:
1338                    mHomeDown = false;
1339                    return true;
1340            }
1341        }
1342
1343        return super.dispatchKeyEvent(event);
1344    }
1345
1346    private void closeFolder() {
1347        Folder folder = mWorkspace.getOpenFolder();
1348        if (folder != null) {
1349            closeFolder(folder);
1350        }
1351    }
1352
1353    void closeFolder(Folder folder) {
1354        folder.getInfo().opened = false;
1355        ViewGroup parent = (ViewGroup) folder.getParent();
1356        if (parent != null) {
1357            parent.removeView(folder);
1358            mDragController.removeDropTarget((DropTarget)folder);
1359        }
1360        folder.onClose();
1361    }
1362
1363    /**
1364     * When the notification that favorites have changed is received, requests
1365     * a favorites list refresh.
1366     */
1367    private void onFavoritesChanged() {
1368        mDesktopLocked = true;
1369        mAllAppsDialog.lock();
1370        sModel.loadUserItems(false, this, false, false);
1371    }
1372
1373    void onDesktopItemsLoaded() {
1374        if (mDestroyed) return;
1375        bindDesktopItems();
1376    }
1377
1378    /**
1379     * Refreshes the shortcuts shown on the workspace.
1380     */
1381    private void bindDesktopItems() {
1382        final ArrayList<ItemInfo> shortcuts = sModel.getDesktopItems();
1383        final ArrayList<LauncherAppWidgetInfo> appWidgets = sModel.getDesktopAppWidgets();
1384        final ApplicationsAdapter drawerAdapter = sModel.getApplicationsAdapter();
1385        if (shortcuts == null || appWidgets == null || drawerAdapter == null) {
1386            return;
1387        }
1388
1389        final Workspace workspace = mWorkspace;
1390        int count = workspace.getChildCount();
1391        for (int i = 0; i < count; i++) {
1392            ((ViewGroup) workspace.getChildAt(i)).removeAllViewsInLayout();
1393        }
1394
1395        if (DEBUG_USER_INTERFACE) {
1396            android.widget.Button finishButton = new android.widget.Button(this);
1397            finishButton.setText("Finish");
1398            workspace.addInScreen(finishButton, 1, 0, 0, 1, 1);
1399
1400            finishButton.setOnClickListener(new android.widget.Button.OnClickListener() {
1401                public void onClick(View v) {
1402                    finish();
1403                }
1404            });
1405        }
1406
1407        // Flag any old binder to terminate early
1408        if (mBinder != null) {
1409            mBinder.mTerminate = true;
1410        }
1411
1412        mBinder = new DesktopBinder(this, shortcuts, appWidgets, drawerAdapter);
1413        mBinder.startBindingItems();
1414    }
1415
1416    private void bindItems(Launcher.DesktopBinder binder,
1417            ArrayList<ItemInfo> shortcuts, int start, int count) {
1418
1419        final Workspace workspace = mWorkspace;
1420        final boolean desktopLocked = mDesktopLocked;
1421
1422        final int end = Math.min(start + DesktopBinder.ITEMS_COUNT, count);
1423        int i = start;
1424
1425        for ( ; i < end; i++) {
1426            final ItemInfo item = shortcuts.get(i);
1427            switch (item.itemType) {
1428                case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION:
1429                case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
1430                    final View shortcut = createShortcut((ApplicationInfo) item);
1431                    workspace.addInScreen(shortcut, item.screen, item.cellX, item.cellY, 1, 1,
1432                            !desktopLocked);
1433                    break;
1434                case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER:
1435                    final FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon, this,
1436                            (ViewGroup) workspace.getChildAt(workspace.getCurrentScreen()),
1437                            (UserFolderInfo) item);
1438                    workspace.addInScreen(newFolder, item.screen, item.cellX, item.cellY, 1, 1,
1439                            !desktopLocked);
1440                    break;
1441                case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER:
1442                    final FolderIcon newLiveFolder = LiveFolderIcon.fromXml(
1443                            R.layout.live_folder_icon, this,
1444                            (ViewGroup) workspace.getChildAt(workspace.getCurrentScreen()),
1445                            (LiveFolderInfo) item);
1446                    workspace.addInScreen(newLiveFolder, item.screen, item.cellX, item.cellY, 1, 1,
1447                            !desktopLocked);
1448                    break;
1449                case LauncherSettings.Favorites.ITEM_TYPE_WIDGET_SEARCH:
1450                    final int screen = workspace.getCurrentScreen();
1451                    final View view = mInflater.inflate(R.layout.widget_search,
1452                            (ViewGroup) workspace.getChildAt(screen), false);
1453
1454                    Search search = (Search) view.findViewById(R.id.widget_search);
1455                    search.setLauncher(this);
1456
1457                    final Widget widget = (Widget) item;
1458                    view.setTag(widget);
1459
1460                    workspace.addWidget(view, widget, !desktopLocked);
1461                    break;
1462            }
1463        }
1464
1465        workspace.requestLayout();
1466
1467        if (end >= count) {
1468            finishBindDesktopItems();
1469            binder.startBindingDrawer();
1470        } else {
1471            binder.obtainMessage(DesktopBinder.MESSAGE_BIND_ITEMS, i, count).sendToTarget();
1472        }
1473    }
1474
1475    private void finishBindDesktopItems() {
1476        if (mSavedState != null) {
1477            if (!mWorkspace.hasFocus()) {
1478                mWorkspace.getChildAt(mWorkspace.getCurrentScreen()).requestFocus();
1479            }
1480
1481            final long[] userFolders = mSavedState.getLongArray(RUNTIME_STATE_USER_FOLDERS);
1482            if (userFolders != null) {
1483                for (long folderId : userFolders) {
1484                    final FolderInfo info = sModel.findFolderById(folderId);
1485                    if (info != null) {
1486                        openFolder(info);
1487                    }
1488                }
1489                final Folder openFolder = mWorkspace.getOpenFolder();
1490                if (openFolder != null) {
1491                    openFolder.requestFocus();
1492                }
1493            }
1494
1495            final boolean allApps = mSavedState.getBoolean(RUNTIME_STATE_ALL_APPS_FOLDER, false);
1496            if (allApps) {
1497                showAllAppsDialog();
1498            }
1499
1500            mSavedState = null;
1501        }
1502
1503        if (mSavedInstanceState != null) {
1504            super.onRestoreInstanceState(mSavedInstanceState);
1505            mSavedInstanceState = null;
1506        }
1507
1508        /* TODO
1509        if (mAllAppsDialog.isOpen && !mDrawer.hasFocus()) {
1510            mDrawer.requestFocus();
1511        }
1512        */
1513
1514        mDesktopLocked = false;
1515        mAllAppsDialog.unlock();
1516    }
1517
1518    private void bindDrawer(Launcher.DesktopBinder binder,
1519            ApplicationsAdapter drawerAdapter) {
1520        // TODO mAllAppsGrid.setAdapter(drawerAdapter);
1521        binder.startBindingAppWidgetsWhenIdle();
1522    }
1523
1524    private void bindAppWidgets(Launcher.DesktopBinder binder,
1525            LinkedList<LauncherAppWidgetInfo> appWidgets) {
1526
1527        final Workspace workspace = mWorkspace;
1528        final boolean desktopLocked = mDesktopLocked;
1529
1530        if (!appWidgets.isEmpty()) {
1531            final LauncherAppWidgetInfo item = appWidgets.removeFirst();
1532
1533            final int appWidgetId = item.appWidgetId;
1534            final AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
1535            item.hostView = mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
1536
1537            if (LOGD) d(LOG_TAG, String.format("about to setAppWidget for id=%d, info=%s", appWidgetId, appWidgetInfo));
1538
1539            item.hostView.setAppWidget(appWidgetId, appWidgetInfo);
1540            item.hostView.setTag(item);
1541
1542            workspace.addInScreen(item.hostView, item.screen, item.cellX,
1543                    item.cellY, item.spanX, item.spanY, !desktopLocked);
1544
1545            workspace.requestLayout();
1546        }
1547
1548        if (appWidgets.isEmpty()) {
1549            if (PROFILE_ROTATE) {
1550                android.os.Debug.stopMethodTracing();
1551            }
1552        } else {
1553            binder.obtainMessage(DesktopBinder.MESSAGE_BIND_APPWIDGETS).sendToTarget();
1554        }
1555    }
1556
1557    /**
1558     * Launches the intent referred by the clicked shortcut.
1559     *
1560     * @param v The view representing the clicked shortcut.
1561     */
1562    public void onClick(View v) {
1563        Object tag = v.getTag();
1564        if (tag instanceof ApplicationInfo) {
1565            // Open shortcut
1566            final Intent intent = ((ApplicationInfo) tag).intent;
1567            startActivitySafely(intent);
1568        } else if (tag instanceof FolderInfo) {
1569            handleFolderClick((FolderInfo) tag);
1570        } else if (v == mHandleView) {
1571            if (mAllAppsDialog.isOpen) {
1572                // TODO how can we be here?
1573            } else {
1574                showAllAppsDialog();
1575            }
1576        }
1577    }
1578
1579    void startActivitySafely(Intent intent) {
1580        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
1581        try {
1582            startActivity(intent);
1583        } catch (ActivityNotFoundException e) {
1584            Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
1585        } catch (SecurityException e) {
1586            Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
1587            e(LOG_TAG, "Launcher does not have the permission to launch " + intent +
1588                    ". Make sure to create a MAIN intent-filter for the corresponding activity " +
1589                    "or use the exported attribute for this activity.", e);
1590        }
1591    }
1592
1593    private void handleFolderClick(FolderInfo folderInfo) {
1594        if (!folderInfo.opened) {
1595            // Close any open folder
1596            closeFolder();
1597            // Open the requested folder
1598            openFolder(folderInfo);
1599        } else {
1600            // Find the open folder...
1601            Folder openFolder = mWorkspace.getFolderForTag(folderInfo);
1602            int folderScreen;
1603            if (openFolder != null) {
1604                folderScreen = mWorkspace.getScreenForView(openFolder);
1605                // .. and close it
1606                closeFolder(openFolder);
1607                if (folderScreen != mWorkspace.getCurrentScreen()) {
1608                    // Close any folder open on the current screen
1609                    closeFolder();
1610                    // Pull the folder onto this screen
1611                    openFolder(folderInfo);
1612                }
1613            }
1614        }
1615    }
1616
1617    private void loadWallpaper() {
1618        // The first time the application is started, we load the wallpaper from
1619        // the ApplicationContext
1620        if (sWallpaper == null) {
1621            final Drawable drawable;
1622            if (false) {
1623                drawable = getWallpaper();
1624            } else {
1625                drawable = getResources().getDrawable(R.drawable.wallpaper_path);
1626            }
1627            if (drawable instanceof BitmapDrawable) {
1628                sWallpaper = ((BitmapDrawable) drawable).getBitmap();
1629            } else {
1630                throw new IllegalStateException("The wallpaper must be a BitmapDrawable.");
1631            }
1632        }
1633        mWallpaperView.loadWallpaper(sWallpaper);
1634    }
1635
1636    /**
1637     * Opens the user fodler described by the specified tag. The opening of the folder
1638     * is animated relative to the specified View. If the View is null, no animation
1639     * is played.
1640     *
1641     * @param folderInfo The FolderInfo describing the folder to open.
1642     */
1643    private void openFolder(FolderInfo folderInfo) {
1644        Folder openFolder;
1645
1646        if (folderInfo instanceof UserFolderInfo) {
1647            openFolder = UserFolder.fromXml(this);
1648        } else if (folderInfo instanceof LiveFolderInfo) {
1649            openFolder = com.android.launcher2.LiveFolder.fromXml(this, folderInfo);
1650        } else {
1651            return;
1652        }
1653
1654        openFolder.setDragController(mDragController);
1655        openFolder.setLauncher(this);
1656
1657        openFolder.bind(folderInfo);
1658        folderInfo.opened = true;
1659
1660        mWorkspace.addInScreen(openFolder, folderInfo.screen, 0, 0, 4, 4);
1661        openFolder.onOpen();
1662    }
1663
1664    /**
1665     * Returns true if the workspace is being loaded. When the workspace is loading,
1666     * no user interaction should be allowed to avoid any conflict.
1667     *
1668     * @return True if the workspace is locked, false otherwise.
1669     */
1670    boolean isWorkspaceLocked() {
1671        return mDesktopLocked;
1672    }
1673
1674    public boolean onLongClick(View v) {
1675        if (mDesktopLocked) {
1676            return false;
1677        }
1678
1679        if (!(v instanceof CellLayout)) {
1680            v = (View) v.getParent();
1681        }
1682
1683        CellLayout.CellInfo cellInfo = (CellLayout.CellInfo) v.getTag();
1684
1685        // This happens when long clicking an item with the dpad/trackball
1686        if (cellInfo == null) {
1687            return true;
1688        }
1689
1690        if (mWorkspace.allowLongPress()) {
1691            if (cellInfo.cell == null) {
1692                if (cellInfo.valid) {
1693                    // User long pressed on empty space
1694                    mWorkspace.setAllowLongPress(false);
1695                    showAddDialog(cellInfo);
1696                }
1697            } else {
1698                if (!(cellInfo.cell instanceof Folder)) {
1699                    // User long pressed on an item
1700                    mWorkspace.startDrag(cellInfo);
1701                }
1702            }
1703        }
1704        return true;
1705    }
1706
1707    static LauncherModel getModel() {
1708        return sModel;
1709    }
1710
1711    View getDrawerHandle() {
1712        return mHandleView;
1713    }
1714
1715    boolean isDrawerDown() {
1716        return /* TODO !mDrawer.isMoving() && */ !mAllAppsDialog.isOpen;
1717    }
1718
1719    Workspace getWorkspace() {
1720        return mWorkspace;
1721    }
1722
1723    /* TODO
1724    GridView getApplicationsGrid() {
1725        return mAllAppsGrid;
1726    }
1727    */
1728
1729    @Override
1730    protected Dialog onCreateDialog(int id) {
1731        switch (id) {
1732            case DIALOG_ALL_APPS:
1733                return mAllAppsDialog;
1734            case DIALOG_CREATE_SHORTCUT:
1735                return new CreateShortcut().createDialog();
1736            case DIALOG_RENAME_FOLDER:
1737                return new RenameFolder().createDialog();
1738        }
1739
1740        return super.onCreateDialog(id);
1741    }
1742
1743    @Override
1744    protected void onPrepareDialog(int id, Dialog dialog) {
1745        switch (id) {
1746            case DIALOG_ALL_APPS:
1747                // TODO mAllAppsGrid.onPrepareDialog();
1748                break;
1749            case DIALOG_CREATE_SHORTCUT:
1750                break;
1751            case DIALOG_RENAME_FOLDER:
1752                if (mFolderInfo != null) {
1753                    EditText input = (EditText) dialog.findViewById(R.id.folder_name);
1754                    final CharSequence text = mFolderInfo.title;
1755                    input.setText(text);
1756                    input.setSelection(0, text.length());
1757                }
1758                break;
1759        }
1760    }
1761
1762    void showRenameDialog(FolderInfo info) {
1763        mFolderInfo = info;
1764        mWaitingForResult = true;
1765        showDialog(DIALOG_RENAME_FOLDER);
1766    }
1767
1768    private void showAddDialog(CellLayout.CellInfo cellInfo) {
1769        mAddItemCellInfo = cellInfo;
1770        mWaitingForResult = true;
1771        showDialog(DIALOG_CREATE_SHORTCUT);
1772    }
1773
1774    private void pickShortcut(int requestCode, int title) {
1775        Bundle bundle = new Bundle();
1776
1777        ArrayList<String> shortcutNames = new ArrayList<String>();
1778        shortcutNames.add(getString(R.string.group_applications));
1779        bundle.putStringArrayList(Intent.EXTRA_SHORTCUT_NAME, shortcutNames);
1780
1781        ArrayList<ShortcutIconResource> shortcutIcons = new ArrayList<ShortcutIconResource>();
1782        shortcutIcons.add(ShortcutIconResource.fromContext(Launcher.this,
1783                        R.drawable.ic_launcher_application));
1784        bundle.putParcelableArrayList(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, shortcutIcons);
1785
1786        Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1787        pickIntent.putExtra(Intent.EXTRA_INTENT, new Intent(Intent.ACTION_CREATE_SHORTCUT));
1788        pickIntent.putExtra(Intent.EXTRA_TITLE, getText(title));
1789        pickIntent.putExtras(bundle);
1790
1791        startActivityForResult(pickIntent, requestCode);
1792    }
1793
1794    private class RenameFolder {
1795        private EditText mInput;
1796
1797        Dialog createDialog() {
1798            mWaitingForResult = true;
1799            final View layout = View.inflate(Launcher.this, R.layout.rename_folder, null);
1800            mInput = (EditText) layout.findViewById(R.id.folder_name);
1801
1802            AlertDialog.Builder builder = new AlertDialog.Builder(Launcher.this);
1803            builder.setIcon(0);
1804            builder.setTitle(getString(R.string.rename_folder_title));
1805            builder.setCancelable(true);
1806            builder.setOnCancelListener(new Dialog.OnCancelListener() {
1807                public void onCancel(DialogInterface dialog) {
1808                    cleanup();
1809                }
1810            });
1811            builder.setNegativeButton(getString(R.string.cancel_action),
1812                new Dialog.OnClickListener() {
1813                    public void onClick(DialogInterface dialog, int which) {
1814                        cleanup();
1815                    }
1816                }
1817            );
1818            builder.setPositiveButton(getString(R.string.rename_action),
1819                new Dialog.OnClickListener() {
1820                    public void onClick(DialogInterface dialog, int which) {
1821                        changeFolderName();
1822                    }
1823                }
1824            );
1825            builder.setView(layout);
1826
1827            final AlertDialog dialog = builder.create();
1828            dialog.setOnShowListener(new DialogInterface.OnShowListener() {
1829                public void onShow(DialogInterface dialog) {
1830                    mWorkspace.lock();
1831                }
1832            });
1833
1834            return dialog;
1835        }
1836
1837        private void changeFolderName() {
1838            final String name = mInput.getText().toString();
1839            if (!TextUtils.isEmpty(name)) {
1840                // Make sure we have the right folder info
1841                mFolderInfo = sModel.findFolderById(mFolderInfo.id);
1842                mFolderInfo.title = name;
1843                LauncherModel.updateItemInDatabase(Launcher.this, mFolderInfo);
1844
1845                if (mDesktopLocked) {
1846                    mAllAppsDialog.lock();
1847                    sModel.loadUserItems(false, Launcher.this, false, false);
1848                } else {
1849                    final FolderIcon folderIcon = (FolderIcon)
1850                            mWorkspace.getViewForTag(mFolderInfo);
1851                    if (folderIcon != null) {
1852                        folderIcon.setText(name);
1853                        getWorkspace().requestLayout();
1854                    } else {
1855                        mDesktopLocked = true;
1856                        mAllAppsDialog.lock();
1857                        sModel.loadUserItems(false, Launcher.this, false, false);
1858                    }
1859                }
1860            }
1861            cleanup();
1862        }
1863
1864        private void cleanup() {
1865            mWorkspace.unlock();
1866            dismissDialog(DIALOG_RENAME_FOLDER);
1867            mWaitingForResult = false;
1868            mFolderInfo = null;
1869        }
1870    }
1871
1872    /**
1873     * Holds the 3d all apps view.
1874     */
1875    private class AllAppsDialog extends Dialog implements DialogInterface.OnCancelListener,
1876            DialogInterface.OnDismissListener, DialogInterface.OnShowListener {
1877
1878        boolean isOpen;
1879
1880        AllAppsDialog(Context context) {
1881            super(context, android.R.style.Theme_Translucent_NoTitleBar);
1882
1883            setOnCancelListener(this);
1884            setOnDismissListener(this);
1885            setOnShowListener(this);
1886
1887            setContentView(R.layout.all_apps);
1888            AllAppsView grid = mAllAppsGrid = (AllAppsView)findViewById(R.id.all_apps);
1889
1890            DragLayer dragLayer = (DragLayer)findViewById(R.id.drag_layer);
1891            dragLayer.setDragController(mDragController);
1892
1893            // TODO grid.setDragController(mDragController);
1894            // TODO grid.setLauncher(Launcher.this);
1895        }
1896
1897        public void onCancel(DialogInterface dialog) {
1898            onDestroy();
1899        }
1900
1901        public void onDismiss(DialogInterface dialog) {
1902            onDestroy();
1903        }
1904
1905        public void onShow(DialogInterface dialog) {
1906        }
1907
1908        private void onDestroy() {
1909        }
1910
1911        void lock() {
1912            // TODO
1913        }
1914
1915        void unlock() {
1916            // TODO
1917        }
1918
1919        @Override public boolean onKeyDown(int keyCode, KeyEvent event) {
1920            switch (keyCode) {
1921                case KeyEvent.KEYCODE_BACK:
1922                    closeAllAppsDialog(true);
1923                    return true;
1924                default:
1925                    return super.onKeyDown(keyCode, event);
1926            }
1927        }
1928    }
1929
1930    void showAllAppsDialog() {
1931        mAllAppsDialog.isOpen = true;
1932        showDialog(DIALOG_ALL_APPS);
1933        mWorkspace.hide();
1934    }
1935
1936    void showWorkspace() {
1937        mWorkspace.show();
1938    }
1939
1940    void closeAllAppsDialog(boolean animated) {
1941        if (mAllAppsDialog.isOpen) {
1942            if (animated) {
1943                // TODO mDrawer.animateClose();
1944                mAllAppsDialog.dismiss();
1945            } else {
1946                mAllAppsDialog.dismiss();
1947            }
1948            mAllAppsDialog.isOpen = false;
1949            mWorkspace.getChildAt(mWorkspace.getCurrentScreen()).requestFocus();
1950            mWorkspace.show();
1951        }
1952    }
1953
1954    /**
1955     * Displays the shortcut creation dialog and launches, if necessary, the
1956     * appropriate activity.
1957     */
1958    private class CreateShortcut implements DialogInterface.OnClickListener,
1959            DialogInterface.OnCancelListener, DialogInterface.OnDismissListener,
1960            DialogInterface.OnShowListener {
1961
1962        private AddAdapter mAdapter;
1963
1964        Dialog createDialog() {
1965            mWaitingForResult = true;
1966
1967            mAdapter = new AddAdapter(Launcher.this);
1968
1969            final AlertDialog.Builder builder = new AlertDialog.Builder(Launcher.this);
1970            builder.setTitle(getString(R.string.menu_item_add_item));
1971            builder.setAdapter(mAdapter, this);
1972
1973            builder.setInverseBackgroundForced(true);
1974
1975            AlertDialog dialog = builder.create();
1976            dialog.setOnCancelListener(this);
1977            dialog.setOnDismissListener(this);
1978            dialog.setOnShowListener(this);
1979
1980            return dialog;
1981        }
1982
1983        public void onCancel(DialogInterface dialog) {
1984            mWaitingForResult = false;
1985            cleanup();
1986        }
1987
1988        public void onDismiss(DialogInterface dialog) {
1989            mWorkspace.unlock();
1990        }
1991
1992        private void cleanup() {
1993            mWorkspace.unlock();
1994            dismissDialog(DIALOG_CREATE_SHORTCUT);
1995        }
1996
1997        /**
1998         * Handle the action clicked in the "Add to home" dialog.
1999         */
2000        public void onClick(DialogInterface dialog, int which) {
2001            Resources res = getResources();
2002            cleanup();
2003
2004            switch (which) {
2005                case AddAdapter.ITEM_SHORTCUT: {
2006                    // Insert extra item to handle picking application
2007                    pickShortcut(REQUEST_PICK_SHORTCUT, R.string.title_select_shortcut);
2008                    break;
2009                }
2010
2011                case AddAdapter.ITEM_APPWIDGET: {
2012                    int appWidgetId = Launcher.this.mAppWidgetHost.allocateAppWidgetId();
2013
2014                    Intent pickIntent = new Intent(AppWidgetManager.ACTION_APPWIDGET_PICK);
2015                    pickIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
2016                    // add the search widget
2017                    ArrayList<AppWidgetProviderInfo> customInfo =
2018                            new ArrayList<AppWidgetProviderInfo>();
2019                    AppWidgetProviderInfo info = new AppWidgetProviderInfo();
2020                    info.provider = new ComponentName(getPackageName(), "XXX.YYY");
2021                    info.label = getString(R.string.group_search);
2022                    info.icon = R.drawable.ic_search_widget;
2023                    customInfo.add(info);
2024                    pickIntent.putParcelableArrayListExtra(
2025                            AppWidgetManager.EXTRA_CUSTOM_INFO, customInfo);
2026                    ArrayList<Bundle> customExtras = new ArrayList<Bundle>();
2027                    Bundle b = new Bundle();
2028                    b.putString(EXTRA_CUSTOM_WIDGET, SEARCH_WIDGET);
2029                    customExtras.add(b);
2030                    pickIntent.putParcelableArrayListExtra(
2031                            AppWidgetManager.EXTRA_CUSTOM_EXTRAS, customExtras);
2032                    // start the pick activity
2033                    startActivityForResult(pickIntent, REQUEST_PICK_APPWIDGET);
2034                    break;
2035                }
2036
2037                case AddAdapter.ITEM_LIVE_FOLDER: {
2038                    // Insert extra item to handle inserting folder
2039                    Bundle bundle = new Bundle();
2040
2041                    ArrayList<String> shortcutNames = new ArrayList<String>();
2042                    shortcutNames.add(res.getString(R.string.group_folder));
2043                    bundle.putStringArrayList(Intent.EXTRA_SHORTCUT_NAME, shortcutNames);
2044
2045                    ArrayList<ShortcutIconResource> shortcutIcons =
2046                            new ArrayList<ShortcutIconResource>();
2047                    shortcutIcons.add(ShortcutIconResource.fromContext(Launcher.this,
2048                            R.drawable.ic_launcher_folder));
2049                    bundle.putParcelableArrayList(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, shortcutIcons);
2050
2051                    Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
2052                    pickIntent.putExtra(Intent.EXTRA_INTENT,
2053                            new Intent(LiveFolders.ACTION_CREATE_LIVE_FOLDER));
2054                    pickIntent.putExtra(Intent.EXTRA_TITLE,
2055                            getText(R.string.title_select_live_folder));
2056                    pickIntent.putExtras(bundle);
2057
2058                    startActivityForResult(pickIntent, REQUEST_PICK_LIVE_FOLDER);
2059                    break;
2060                }
2061
2062                case AddAdapter.ITEM_WALLPAPER: {
2063                    startWallpaper();
2064                    break;
2065                }
2066            }
2067        }
2068
2069        public void onShow(DialogInterface dialog) {
2070            mWorkspace.lock();
2071        }
2072    }
2073
2074    /**
2075     * Receives notifications when applications are added/removed.
2076     */
2077    private class ApplicationsIntentReceiver extends BroadcastReceiver {
2078        @Override
2079        public void onReceive(Context context, Intent intent) {
2080            final String action = intent.getAction();
2081            final String packageName = intent.getData().getSchemeSpecificPart();
2082            final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
2083
2084            if (LauncherModel.DEBUG_LOADERS) {
2085                d(LauncherModel.LOG_TAG, "application intent received: " + action +
2086                        ", replacing=" + replacing);
2087                d(LauncherModel.LOG_TAG, "  --> " + intent.getData());
2088            }
2089
2090            if (!Intent.ACTION_PACKAGE_CHANGED.equals(action)) {
2091                if (Intent.ACTION_PACKAGE_REMOVED.equals(action)) {
2092                    if (!replacing) {
2093                        removeShortcutsForPackage(packageName);
2094                        if (LauncherModel.DEBUG_LOADERS) {
2095                            d(LauncherModel.LOG_TAG, "  --> remove package");
2096                        }
2097                        sModel.removePackage(Launcher.this, packageName);
2098                    }
2099                    // else, we are replacing the package, so a PACKAGE_ADDED will be sent
2100                    // later, we will update the package at this time
2101                } else {
2102                    if (!replacing) {
2103                        if (LauncherModel.DEBUG_LOADERS) {
2104                            d(LauncherModel.LOG_TAG, "  --> add package");
2105                        }
2106                        sModel.addPackage(Launcher.this, packageName);
2107                    } else {
2108                        if (LauncherModel.DEBUG_LOADERS) {
2109                            d(LauncherModel.LOG_TAG, "  --> update package " + packageName);
2110                        }
2111                        sModel.updatePackage(Launcher.this, packageName);
2112                        updateShortcutsForPackage(packageName);
2113                    }
2114                }
2115                removeDialog(DIALOG_CREATE_SHORTCUT);
2116            } else {
2117                if (LauncherModel.DEBUG_LOADERS) {
2118                    d(LauncherModel.LOG_TAG, "  --> sync package " + packageName);
2119                }
2120                sModel.syncPackage(Launcher.this, packageName);
2121            }
2122        }
2123    }
2124
2125    /**
2126     * Receives notifications whenever the user favorites have changed.
2127     */
2128    private class FavoritesChangeObserver extends ContentObserver {
2129        public FavoritesChangeObserver() {
2130            super(new Handler());
2131        }
2132
2133        @Override
2134        public void onChange(boolean selfChange) {
2135            onFavoritesChanged();
2136        }
2137    }
2138
2139    /**
2140     * Receives intents from other applications to change the wallpaper.
2141     */
2142    private static class WallpaperIntentReceiver extends BroadcastReceiver {
2143        private final Application mApplication;
2144        private WeakReference<Launcher> mLauncher;
2145
2146        WallpaperIntentReceiver(Application application, Launcher launcher) {
2147            mApplication = application;
2148            setLauncher(launcher);
2149        }
2150
2151        void setLauncher(Launcher launcher) {
2152            mLauncher = new WeakReference<Launcher>(launcher);
2153        }
2154
2155        @Override
2156        public void onReceive(Context context, Intent intent) {
2157            // Load the wallpaper from the ApplicationContext and store it locally
2158            // until the Launcher Activity is ready to use it
2159            final Drawable drawable = mApplication.getWallpaper();
2160            if (drawable instanceof BitmapDrawable) {
2161                sWallpaper = ((BitmapDrawable) drawable).getBitmap();
2162            } else {
2163                throw new IllegalStateException("The wallpaper must be a BitmapDrawable.");
2164            }
2165
2166            // If Launcher is alive, notify we have a new wallpaper
2167            if (mLauncher != null) {
2168                final Launcher launcher = mLauncher.get();
2169                if (launcher != null) {
2170                    launcher.loadWallpaper();
2171                }
2172            }
2173        }
2174    }
2175
2176    private static class DesktopBinder extends Handler implements MessageQueue.IdleHandler {
2177        static final int MESSAGE_BIND_ITEMS = 0x1;
2178        static final int MESSAGE_BIND_APPWIDGETS = 0x2;
2179        static final int MESSAGE_BIND_DRAWER = 0x3;
2180
2181        // Number of items to bind in every pass
2182        static final int ITEMS_COUNT = 6;
2183
2184        private final ArrayList<ItemInfo> mShortcuts;
2185        private final LinkedList<LauncherAppWidgetInfo> mAppWidgets;
2186        private final ApplicationsAdapter mDrawerAdapter;
2187        private final WeakReference<Launcher> mLauncher;
2188
2189        public boolean mTerminate = false;
2190
2191        DesktopBinder(Launcher launcher, ArrayList<ItemInfo> shortcuts,
2192                ArrayList<LauncherAppWidgetInfo> appWidgets,
2193                ApplicationsAdapter drawerAdapter) {
2194
2195            mLauncher = new WeakReference<Launcher>(launcher);
2196            mShortcuts = shortcuts;
2197            mDrawerAdapter = drawerAdapter;
2198
2199            // Sort widgets so active workspace is bound first
2200            final int currentScreen = launcher.mWorkspace.getCurrentScreen();
2201            final int size = appWidgets.size();
2202            mAppWidgets = new LinkedList<LauncherAppWidgetInfo>();
2203
2204            for (int i = 0; i < size; i++) {
2205                LauncherAppWidgetInfo appWidgetInfo = appWidgets.get(i);
2206                if (appWidgetInfo.screen == currentScreen) {
2207                    mAppWidgets.addFirst(appWidgetInfo);
2208                } else {
2209                    mAppWidgets.addLast(appWidgetInfo);
2210                }
2211            }
2212        }
2213
2214        public void startBindingItems() {
2215            obtainMessage(MESSAGE_BIND_ITEMS, 0, mShortcuts.size()).sendToTarget();
2216        }
2217
2218        public void startBindingDrawer() {
2219            obtainMessage(MESSAGE_BIND_DRAWER).sendToTarget();
2220        }
2221
2222        public void startBindingAppWidgetsWhenIdle() {
2223            // Ask for notification when message queue becomes idle
2224            final MessageQueue messageQueue = Looper.myQueue();
2225            messageQueue.addIdleHandler(this);
2226        }
2227
2228        public boolean queueIdle() {
2229            // Queue is idle, so start binding items
2230            startBindingAppWidgets();
2231            return false;
2232        }
2233
2234        public void startBindingAppWidgets() {
2235            obtainMessage(MESSAGE_BIND_APPWIDGETS).sendToTarget();
2236        }
2237
2238        @Override
2239        public void handleMessage(Message msg) {
2240            Launcher launcher = mLauncher.get();
2241            if (launcher == null || mTerminate) {
2242                return;
2243            }
2244
2245            switch (msg.what) {
2246                case MESSAGE_BIND_ITEMS: {
2247                    launcher.bindItems(this, mShortcuts, msg.arg1, msg.arg2);
2248                    break;
2249                }
2250                case MESSAGE_BIND_DRAWER: {
2251                    launcher.bindDrawer(this, mDrawerAdapter);
2252                    break;
2253                }
2254                case MESSAGE_BIND_APPWIDGETS: {
2255                    launcher.bindAppWidgets(this, mAppWidgets);
2256                    break;
2257                }
2258            }
2259        }
2260    }
2261}
2262