Launcher.java revision e6b8e2fa73b5b2e8e3adfa9ea1b4ca9659e10686 
1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.launcher2;
18
19import android.app.Activity;
20import android.app.AlertDialog;
21import android.app.Dialog;
22import android.app.ISearchManager;
23import android.app.SearchManager;
24import android.app.StatusBarManager;
25import android.app.WallpaperInfo;
26import android.app.WallpaperManager;
27import android.content.ActivityNotFoundException;
28import android.content.ComponentName;
29import android.content.ContentResolver;
30import android.content.Context;
31import android.content.DialogInterface;
32import android.content.Intent;
33import android.content.Intent.ShortcutIconResource;
34import android.content.pm.ActivityInfo;
35import android.content.pm.LabeledIntent;
36import android.content.pm.PackageManager;
37import android.content.pm.PackageManager.NameNotFoundException;
38import android.content.res.Configuration;
39import android.content.res.Resources;
40import android.database.ContentObserver;
41import android.graphics.Bitmap;
42import android.graphics.Rect;
43import android.graphics.Canvas;
44import android.graphics.drawable.Drawable;
45import android.os.Bundle;
46import android.os.Handler;
47import android.os.Parcelable;
48import android.os.RemoteException;
49import android.os.ServiceManager;
50import android.os.SystemClock;
51import android.provider.LiveFolders;
52import android.text.Selection;
53import android.text.SpannableStringBuilder;
54import android.text.TextUtils;
55import android.text.method.TextKeyListener;
56import static android.util.Log.*;
57import android.util.Log;
58import android.view.Display;
59import android.view.KeyEvent;
60import android.view.LayoutInflater;
61import android.view.Menu;
62import android.view.MenuItem;
63import android.view.View;
64import android.view.ViewGroup;
65import android.view.MotionEvent;
66import android.view.View.OnLongClickListener;
67import android.view.inputmethod.InputMethodManager;
68import android.widget.EditText;
69import android.widget.TextView;
70import android.widget.Toast;
71import android.widget.ImageView;
72import android.widget.PopupWindow;
73import android.widget.LinearLayout;
74import android.appwidget.AppWidgetManager;
75import android.appwidget.AppWidgetProviderInfo;
76
77import java.util.ArrayList;
78import java.util.HashMap;
79import java.io.DataOutputStream;
80import java.io.FileNotFoundException;
81import java.io.IOException;
82import java.io.DataInputStream;
83
84/**
85 * Default launcher application.
86 */
87public final class Launcher extends Activity
88        implements View.OnClickListener, OnLongClickListener, LauncherModel.Callbacks {
89    static final String LOG_TAG = "Launcher";
90    static final String TAG = LOG_TAG;
91    static final boolean LOGD = false;
92
93    static final boolean PROFILE_STARTUP = false;
94    static final boolean PROFILE_ROTATE = false;
95    static final boolean DEBUG_USER_INTERFACE = false;
96
97    private static final int WALLPAPER_SCREENS_SPAN = 2;
98
99    private static final int MENU_GROUP_ADD = 1;
100    private static final int MENU_ADD = Menu.FIRST + 1;
101    private static final int MENU_WALLPAPER_SETTINGS = MENU_ADD + 1;
102    private static final int MENU_SEARCH = MENU_WALLPAPER_SETTINGS + 1;
103    private static final int MENU_NOTIFICATIONS = MENU_SEARCH + 1;
104    private static final int MENU_SETTINGS = MENU_NOTIFICATIONS + 1;
105
106    private static final int REQUEST_CREATE_SHORTCUT = 1;
107    private static final int REQUEST_CREATE_LIVE_FOLDER = 4;
108    private static final int REQUEST_CREATE_APPWIDGET = 5;
109    private static final int REQUEST_PICK_APPLICATION = 6;
110    private static final int REQUEST_PICK_SHORTCUT = 7;
111    private static final int REQUEST_PICK_LIVE_FOLDER = 8;
112    private static final int REQUEST_PICK_APPWIDGET = 9;
113    private static final int REQUEST_PICK_WALLPAPER = 10;
114
115    static final String EXTRA_SHORTCUT_DUPLICATE = "duplicate";
116
117    static final String EXTRA_CUSTOM_WIDGET = "custom_widget";
118    static final String SEARCH_WIDGET = "search_widget";
119
120    static final int SCREEN_COUNT = 5;
121    static final int DEFAULT_SCREEN = 2;
122    static final int NUMBER_CELLS_X = 4;
123    static final int NUMBER_CELLS_Y = 4;
124
125    static final int DIALOG_CREATE_SHORTCUT = 1;
126    static final int DIALOG_RENAME_FOLDER = 2;
127
128    private static final String PREFERENCES = "launcher.preferences";
129
130    // Type: int
131    private static final String RUNTIME_STATE_CURRENT_SCREEN = "launcher.current_screen";
132    // Type: boolean
133    private static final String RUNTIME_STATE_ALL_APPS_FOLDER = "launcher.all_apps_folder";
134    // Type: long
135    private static final String RUNTIME_STATE_USER_FOLDERS = "launcher.user_folder";
136    // Type: int
137    private static final String RUNTIME_STATE_PENDING_ADD_SCREEN = "launcher.add_screen";
138    // Type: int
139    private static final String RUNTIME_STATE_PENDING_ADD_CELL_X = "launcher.add_cellX";
140    // Type: int
141    private static final String RUNTIME_STATE_PENDING_ADD_CELL_Y = "launcher.add_cellY";
142    // Type: int
143    private static final String RUNTIME_STATE_PENDING_ADD_SPAN_X = "launcher.add_spanX";
144    // Type: int
145    private static final String RUNTIME_STATE_PENDING_ADD_SPAN_Y = "launcher.add_spanY";
146    // Type: int
147    private static final String RUNTIME_STATE_PENDING_ADD_COUNT_X = "launcher.add_countX";
148    // Type: int
149    private static final String RUNTIME_STATE_PENDING_ADD_COUNT_Y = "launcher.add_countY";
150    // Type: int[]
151    private static final String RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS = "launcher.add_occupied_cells";
152    // Type: boolean
153    private static final String RUNTIME_STATE_PENDING_FOLDER_RENAME = "launcher.rename_folder";
154    // Type: long
155    private static final String RUNTIME_STATE_PENDING_FOLDER_RENAME_ID = "launcher.rename_folder_id";
156
157    static final int APPWIDGET_HOST_ID = 1024;
158
159    private static final Object sLock = new Object();
160    private static int sScreen = DEFAULT_SCREEN;
161
162    private final ContentObserver mWidgetObserver = new AppWidgetResetObserver();
163
164    private LayoutInflater mInflater;
165
166    private DragController mDragController;
167    private Workspace mWorkspace;
168
169    private AppWidgetManager mAppWidgetManager;
170    private LauncherAppWidgetHost mAppWidgetHost;
171
172    private CellLayout.CellInfo mAddItemCellInfo;
173    private CellLayout.CellInfo mMenuAddInfo;
174    private final int[] mCellCoordinates = new int[2];
175    private FolderInfo mFolderInfo;
176
177    private DeleteZone mDeleteZone;
178    private HandleView mHandleView;
179    private AllAppsView mAllAppsGrid;
180
181    private Bundle mSavedState;
182
183    private SpannableStringBuilder mDefaultKeySsb = null;
184
185    private boolean mIsNewIntent;
186
187    private boolean mWorkspaceLoading = true;
188
189    private boolean mRestoring;
190    private boolean mWaitingForResult;
191    private boolean mExitingBecauseOfLaunch;
192
193    private Bundle mSavedInstanceState;
194
195    private LauncherModel mModel;
196
197    private ArrayList<ItemInfo> mDesktopItems = new ArrayList<ItemInfo>();
198    private static HashMap<Long, FolderInfo> mFolders = new HashMap<Long, FolderInfo>();
199
200    public static long lastStartTime;
201    private ImageView mPreviousView;
202    private ImageView mNextView;
203
204    @Override
205    protected void onCreate(Bundle savedInstanceState) {
206        lastStartTime = SystemClock.uptimeMillis();
207
208        super.onCreate(savedInstanceState);
209
210        mModel = ((LauncherApplication)getApplication()).setLauncher(this);
211        mDragController = new DragController(this);
212        mInflater = getLayoutInflater();
213
214        mAppWidgetManager = AppWidgetManager.getInstance(this);
215        mAppWidgetHost = new LauncherAppWidgetHost(this, APPWIDGET_HOST_ID);
216        mAppWidgetHost.startListening();
217
218        if (PROFILE_STARTUP) {
219            android.os.Debug.startMethodTracing("/sdcard/launcher");
220        }
221
222        checkForLocaleChange();
223        setWallpaperDimension();
224
225        setContentView(R.layout.launcher);
226        setupViews();
227
228        registerContentObservers();
229
230        lockAllApps();
231
232        mSavedState = savedInstanceState;
233        restoreState(mSavedState);
234
235        if (PROFILE_STARTUP) {
236            android.os.Debug.stopMethodTracing();
237        }
238
239        // We have a new AllAppsView, we need to re-bind everything, and it could have
240        // changed in our absence.
241        mModel.setAllAppsDirty();
242        mModel.setWorkspaceDirty();
243
244        if (!mRestoring) {
245            mModel.startLoader(this, true);
246        }
247
248        // For handling default keys
249        mDefaultKeySsb = new SpannableStringBuilder();
250        Selection.setSelection(mDefaultKeySsb, 0);
251    }
252
253    private void checkForLocaleChange() {
254        final LocaleConfiguration localeConfiguration = new LocaleConfiguration();
255        readConfiguration(this, localeConfiguration);
256
257        final Configuration configuration = getResources().getConfiguration();
258
259        final String previousLocale = localeConfiguration.locale;
260        final String locale = configuration.locale.toString();
261
262        final int previousMcc = localeConfiguration.mcc;
263        final int mcc = configuration.mcc;
264
265        final int previousMnc = localeConfiguration.mnc;
266        final int mnc = configuration.mnc;
267
268        boolean localeChanged = !locale.equals(previousLocale) || mcc != previousMcc || mnc != previousMnc;
269
270        if (localeChanged) {
271            localeConfiguration.locale = locale;
272            localeConfiguration.mcc = mcc;
273            localeConfiguration.mnc = mnc;
274
275            writeConfiguration(this, localeConfiguration);
276            AppInfoCache.flush();
277        }
278    }
279
280    private static class LocaleConfiguration {
281        public String locale;
282        public int mcc = -1;
283        public int mnc = -1;
284    }
285
286    private static void readConfiguration(Context context, LocaleConfiguration configuration) {
287        DataInputStream in = null;
288        try {
289            in = new DataInputStream(context.openFileInput(PREFERENCES));
290            configuration.locale = in.readUTF();
291            configuration.mcc = in.readInt();
292            configuration.mnc = in.readInt();
293        } catch (FileNotFoundException e) {
294            // Ignore
295        } catch (IOException e) {
296            // Ignore
297        } finally {
298            if (in != null) {
299                try {
300                    in.close();
301                } catch (IOException e) {
302                    // Ignore
303                }
304            }
305        }
306    }
307
308    private static void writeConfiguration(Context context, LocaleConfiguration configuration) {
309        DataOutputStream out = null;
310        try {
311            out = new DataOutputStream(context.openFileOutput(PREFERENCES, MODE_PRIVATE));
312            out.writeUTF(configuration.locale);
313            out.writeInt(configuration.mcc);
314            out.writeInt(configuration.mnc);
315            out.flush();
316        } catch (FileNotFoundException e) {
317            // Ignore
318        } catch (IOException e) {
319            //noinspection ResultOfMethodCallIgnored
320            context.getFileStreamPath(PREFERENCES).delete();
321        } finally {
322            if (out != null) {
323                try {
324                    out.close();
325                } catch (IOException e) {
326                    // Ignore
327                }
328            }
329        }
330    }
331
332    static int getScreen() {
333        synchronized (sLock) {
334            return sScreen;
335        }
336    }
337
338    static void setScreen(int screen) {
339        synchronized (sLock) {
340            sScreen = screen;
341        }
342    }
343
344    private void setWallpaperDimension() {
345        WallpaperManager wpm = (WallpaperManager)getSystemService(WALLPAPER_SERVICE);
346
347        Display display = getWindowManager().getDefaultDisplay();
348        boolean isPortrait = display.getWidth() < display.getHeight();
349
350        final int width = isPortrait ? display.getWidth() : display.getHeight();
351        final int height = isPortrait ? display.getHeight() : display.getWidth();
352        wpm.suggestDesiredDimensions(width * WALLPAPER_SCREENS_SPAN, height);
353    }
354
355    @Override
356    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
357        mWaitingForResult = false;
358
359        // The pattern used here is that a user PICKs a specific application,
360        // which, depending on the target, might need to CREATE the actual target.
361
362        // For example, the user would PICK_SHORTCUT for "Music playlist", and we
363        // launch over to the Music app to actually CREATE_SHORTCUT.
364
365        if (resultCode == RESULT_OK && mAddItemCellInfo != null) {
366            switch (requestCode) {
367                case REQUEST_PICK_APPLICATION:
368                    completeAddApplication(this, data, mAddItemCellInfo);
369                    break;
370                case REQUEST_PICK_SHORTCUT:
371                    processShortcut(data, REQUEST_PICK_APPLICATION, REQUEST_CREATE_SHORTCUT);
372                    break;
373                case REQUEST_CREATE_SHORTCUT:
374                    completeAddShortcut(data, mAddItemCellInfo);
375                    break;
376                case REQUEST_PICK_LIVE_FOLDER:
377                    addLiveFolder(data);
378                    break;
379                case REQUEST_CREATE_LIVE_FOLDER:
380                    completeAddLiveFolder(data, mAddItemCellInfo);
381                    break;
382                case REQUEST_PICK_APPWIDGET:
383                    addAppWidget(data);
384                    break;
385                case REQUEST_CREATE_APPWIDGET:
386                    completeAddAppWidget(data, mAddItemCellInfo);
387                    break;
388                case REQUEST_PICK_WALLPAPER:
389                    // We just wanted the activity result here so we can clear mWaitingForResult
390                    break;
391            }
392        } else if ((requestCode == REQUEST_PICK_APPWIDGET ||
393                requestCode == REQUEST_CREATE_APPWIDGET) && resultCode == RESULT_CANCELED &&
394                data != null) {
395            // Clean up the appWidgetId if we canceled
396            int appWidgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
397            if (appWidgetId != -1) {
398                mAppWidgetHost.deleteAppWidgetId(appWidgetId);
399            }
400        }
401    }
402
403    @Override
404    protected void onResume() {
405        if (lastStartTime == 0) {
406            lastStartTime = SystemClock.uptimeMillis();
407        }
408
409        super.onResume();
410
411        if (mRestoring) {
412            mWorkspaceLoading = true;
413            mModel.startLoader(this, true);
414            mRestoring = false;
415        }
416
417        // If this was a new intent (i.e., the mIsNewIntent flag got set to true by
418        // onNewIntent), then close the search dialog if needed, because it probably
419        // came from the user pressing 'home' (rather than, for example, pressing 'back').
420        if (mIsNewIntent) {
421            // Post to a handler so that this happens after the search dialog tries to open
422            // itself again.
423            mWorkspace.post(new Runnable() {
424                public void run() {
425                    ISearchManager searchManagerService = ISearchManager.Stub.asInterface(
426                            ServiceManager.getService(Context.SEARCH_SERVICE));
427                    try {
428                        searchManagerService.stopSearch();
429                    } catch (RemoteException e) {
430                        e(LOG_TAG, "error stopping search", e);
431                    }
432                }
433            });
434        }
435
436        mIsNewIntent = false;
437    }
438
439    @Override
440    protected void onPause() {
441        super.onPause();
442        if (mExitingBecauseOfLaunch) {
443            mExitingBecauseOfLaunch = false;
444            closeAllApps(false);
445        }
446        dismissPreview(mPreviousView);
447        dismissPreview(mNextView);
448    }
449
450    @Override
451    public Object onRetainNonConfigurationInstance() {
452        // Flag the loader to stop early before switching
453        mModel.stopLoader();
454
455        if (PROFILE_ROTATE) {
456            android.os.Debug.startMethodTracing("/sdcard/launcher-rotate");
457        }
458        return null;
459    }
460
461    private boolean acceptFilter() {
462        final InputMethodManager inputManager = (InputMethodManager)
463                getSystemService(Context.INPUT_METHOD_SERVICE);
464        return !inputManager.isFullscreenMode();
465    }
466
467    @Override
468    public boolean onKeyDown(int keyCode, KeyEvent event) {
469        boolean handled = super.onKeyDown(keyCode, event);
470        if (!handled && acceptFilter() && keyCode != KeyEvent.KEYCODE_ENTER) {
471            boolean gotKey = TextKeyListener.getInstance().onKeyDown(mWorkspace, mDefaultKeySsb,
472                    keyCode, event);
473            if (gotKey && mDefaultKeySsb != null && mDefaultKeySsb.length() > 0) {
474                // something usable has been typed - start a search
475                // the typed text will be retrieved and cleared by
476                // showSearchDialog()
477                // If there are multiple keystrokes before the search dialog takes focus,
478                // onSearchRequested() will be called for every keystroke,
479                // but it is idempotent, so it's fine.
480                return onSearchRequested();
481            }
482        }
483
484        return handled;
485    }
486
487    private String getTypedText() {
488        return mDefaultKeySsb.toString();
489    }
490
491    private void clearTypedText() {
492        mDefaultKeySsb.clear();
493        mDefaultKeySsb.clearSpans();
494        Selection.setSelection(mDefaultKeySsb, 0);
495    }
496
497    /**
498     * Restores the previous state, if it exists.
499     *
500     * @param savedState The previous state.
501     */
502    private void restoreState(Bundle savedState) {
503        if (savedState == null) {
504            return;
505        }
506
507        final int currentScreen = savedState.getInt(RUNTIME_STATE_CURRENT_SCREEN, -1);
508        if (currentScreen > -1) {
509            mWorkspace.setCurrentScreen(currentScreen);
510        }
511
512        final int addScreen = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SCREEN, -1);
513        if (addScreen > -1) {
514            mAddItemCellInfo = new CellLayout.CellInfo();
515            final CellLayout.CellInfo addItemCellInfo = mAddItemCellInfo;
516            addItemCellInfo.valid = true;
517            addItemCellInfo.screen = addScreen;
518            addItemCellInfo.cellX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_X);
519            addItemCellInfo.cellY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_Y);
520            addItemCellInfo.spanX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_X);
521            addItemCellInfo.spanY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y);
522            addItemCellInfo.findVacantCellsFromOccupied(
523                    savedState.getBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS),
524                    savedState.getInt(RUNTIME_STATE_PENDING_ADD_COUNT_X),
525                    savedState.getInt(RUNTIME_STATE_PENDING_ADD_COUNT_Y));
526            mRestoring = true;
527        }
528
529        boolean renameFolder = savedState.getBoolean(RUNTIME_STATE_PENDING_FOLDER_RENAME, false);
530        if (renameFolder) {
531            long id = savedState.getLong(RUNTIME_STATE_PENDING_FOLDER_RENAME_ID);
532            mFolderInfo = mModel.getFolderById(this, mFolders, id);
533            mRestoring = true;
534        }
535    }
536
537    /**
538     * Finds all the views we need and configure them properly.
539     */
540    private void setupViews() {
541        DragController dragController = mDragController;
542
543        DragLayer dragLayer = (DragLayer) findViewById(R.id.drag_layer);
544        dragLayer.setDragController(dragController);
545
546        mAllAppsGrid = (AllAppsView)dragLayer.findViewById(R.id.all_apps_view);
547        mAllAppsGrid.setLauncher(this);
548        mAllAppsGrid.setDragController(dragController);
549        mAllAppsGrid.setWillNotDraw(false); // We don't want a hole punched in our window.
550        // Manage focusability manually since this thing is always visible
551        mAllAppsGrid.setFocusable(false);
552
553        mWorkspace = (Workspace) dragLayer.findViewById(R.id.workspace);
554        final Workspace workspace = mWorkspace;
555
556        DeleteZone deleteZone = (DeleteZone) dragLayer.findViewById(R.id.delete_zone);
557        mDeleteZone = deleteZone;
558
559        mHandleView = (HandleView) findViewById(R.id.all_apps_button);
560        mHandleView.setLauncher(this);
561        mHandleView.setOnClickListener(this);
562
563        mPreviousView = (ImageView) dragLayer.findViewById(R.id.previous_screen);
564        mNextView = (ImageView) dragLayer.findViewById(R.id.next_screen);
565
566        Drawable previous = mPreviousView.getDrawable();
567        Drawable next = mNextView.getDrawable();
568        mWorkspace.setIndicators(previous, next);
569
570        mPreviousView.setOnLongClickListener(this);
571        mNextView.setOnLongClickListener(this);
572
573        workspace.setOnLongClickListener(this);
574        workspace.setDragController(dragController);
575        workspace.setLauncher(this);
576
577        deleteZone.setLauncher(this);
578        deleteZone.setDragController(dragController);
579        deleteZone.setHandle(mHandleView);
580
581        dragController.setDragScoller(workspace);
582        dragController.setDragListener(deleteZone);
583        dragController.setScrollView(dragLayer);
584
585        // The order here is bottom to top.
586        dragController.addDropTarget(workspace);
587        dragController.addDropTarget(deleteZone);
588    }
589
590    @SuppressWarnings({"UnusedDeclaration"})
591    public void previousScreen(View v) {
592        mWorkspace.scrollLeft();
593    }
594
595    @SuppressWarnings({"UnusedDeclaration"})
596    public void nextScreen(View v) {
597        mWorkspace.scrollRight();
598    }
599
600    /**
601     * Creates a view representing a shortcut.
602     *
603     * @param info The data structure describing the shortcut.
604     *
605     * @return A View inflated from R.layout.application.
606     */
607    View createShortcut(ApplicationInfo info) {
608        return createShortcut(R.layout.application,
609                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), info);
610    }
611
612    /**
613     * Creates a view representing a shortcut inflated from the specified resource.
614     *
615     * @param layoutResId The id of the XML layout used to create the shortcut.
616     * @param parent The group the shortcut belongs to.
617     * @param info The data structure describing the shortcut.
618     *
619     * @return A View inflated from layoutResId.
620     */
621    View createShortcut(int layoutResId, ViewGroup parent, ApplicationInfo info) {
622        TextView favorite = (TextView) mInflater.inflate(layoutResId, parent, false);
623
624        if (info.icon == null) {
625            info.icon = AppInfoCache.getIconDrawable(getPackageManager(), info);
626        }
627        if (!info.filtered) {
628            info.icon = Utilities.createIconThumbnail(info.icon, this);
629            info.filtered = true;
630        }
631
632        favorite.setCompoundDrawablesWithIntrinsicBounds(null, info.icon, null, null);
633        favorite.setText(info.title);
634        favorite.setTag(info);
635        favorite.setOnClickListener(this);
636
637        return favorite;
638    }
639
640    /**
641     * Add an application shortcut to the workspace.
642     *
643     * @param data The intent describing the application.
644     * @param cellInfo The position on screen where to create the shortcut.
645     */
646    void completeAddApplication(Context context, Intent data, CellLayout.CellInfo cellInfo) {
647        cellInfo.screen = mWorkspace.getCurrentScreen();
648        if (!findSingleSlot(cellInfo)) return;
649
650        final ApplicationInfo info = infoFromApplicationIntent(context, data);
651        if (info != null) {
652            mWorkspace.addApplicationShortcut(info, cellInfo, isWorkspaceLocked());
653        }
654    }
655
656    private static ApplicationInfo infoFromApplicationIntent(Context context, Intent data) {
657        ComponentName component = data.getComponent();
658        PackageManager packageManager = context.getPackageManager();
659        ActivityInfo activityInfo = null;
660        try {
661            activityInfo = packageManager.getActivityInfo(component, 0 /* no flags */);
662        } catch (NameNotFoundException e) {
663            e(LOG_TAG, "Couldn't find ActivityInfo for selected application", e);
664        }
665
666        if (activityInfo != null) {
667            ApplicationInfo itemInfo = new ApplicationInfo();
668
669            itemInfo.title = activityInfo.loadLabel(packageManager);
670            if (itemInfo.title == null) {
671                itemInfo.title = activityInfo.name;
672            }
673
674            itemInfo.setActivity(component, Intent.FLAG_ACTIVITY_NEW_TASK |
675                    Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
676            itemInfo.icon = activityInfo.loadIcon(packageManager);
677            itemInfo.container = ItemInfo.NO_ID;
678
679            return itemInfo;
680        }
681
682        return null;
683    }
684
685    /**
686     * Add a shortcut to the workspace.
687     *
688     * @param data The intent describing the shortcut.
689     * @param cellInfo The position on screen where to create the shortcut.
690     */
691    private void completeAddShortcut(Intent data, CellLayout.CellInfo cellInfo) {
692        cellInfo.screen = mWorkspace.getCurrentScreen();
693        if (!findSingleSlot(cellInfo)) return;
694
695        final ApplicationInfo info = addShortcut(this, data, cellInfo, false);
696
697        if (!mRestoring) {
698            final View view = createShortcut(info);
699            mWorkspace.addInCurrentScreen(view, cellInfo.cellX, cellInfo.cellY, 1, 1,
700                    isWorkspaceLocked());
701        }
702    }
703
704
705    /**
706     * Add a widget to the workspace.
707     *
708     * @param data The intent describing the appWidgetId.
709     * @param cellInfo The position on screen where to create the widget.
710     */
711    private void completeAddAppWidget(Intent data, CellLayout.CellInfo cellInfo) {
712        Bundle extras = data.getExtras();
713        int appWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
714
715        if (LOGD) d(LOG_TAG, "dumping extras content=" + extras.toString());
716
717        AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
718
719        // Calculate the grid spans needed to fit this widget
720        CellLayout layout = (CellLayout) mWorkspace.getChildAt(cellInfo.screen);
721        int[] spans = layout.rectToCell(appWidgetInfo.minWidth, appWidgetInfo.minHeight);
722
723        // Try finding open space on Launcher screen
724        final int[] xy = mCellCoordinates;
725        if (!findSlot(cellInfo, xy, spans[0], spans[1])) {
726            if (appWidgetId != -1) mAppWidgetHost.deleteAppWidgetId(appWidgetId);
727            return;
728        }
729
730        // Build Launcher-specific widget info and save to database
731        LauncherAppWidgetInfo launcherInfo = new LauncherAppWidgetInfo(appWidgetId);
732        launcherInfo.spanX = spans[0];
733        launcherInfo.spanY = spans[1];
734
735        LauncherModel.addItemToDatabase(this, launcherInfo,
736                LauncherSettings.Favorites.CONTAINER_DESKTOP,
737                mWorkspace.getCurrentScreen(), xy[0], xy[1], false);
738
739        if (!mRestoring) {
740            mDesktopItems.add(launcherInfo);
741
742            // Perform actual inflation because we're live
743            launcherInfo.hostView = mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
744
745            launcherInfo.hostView.setAppWidget(appWidgetId, appWidgetInfo);
746            launcherInfo.hostView.setTag(launcherInfo);
747
748            mWorkspace.addInCurrentScreen(launcherInfo.hostView, xy[0], xy[1],
749                    launcherInfo.spanX, launcherInfo.spanY, isWorkspaceLocked());
750        }
751    }
752
753    public void removeAppWidget(LauncherAppWidgetInfo launcherInfo) {
754        mDesktopItems.remove(launcherInfo);
755        launcherInfo.hostView = null;
756    }
757
758    public LauncherAppWidgetHost getAppWidgetHost() {
759        return mAppWidgetHost;
760    }
761
762    static ApplicationInfo addShortcut(Context context, Intent data,
763            CellLayout.CellInfo cellInfo, boolean notify) {
764
765        final ApplicationInfo info = infoFromShortcutIntent(context, data);
766        LauncherModel.addItemToDatabase(context, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
767                cellInfo.screen, cellInfo.cellX, cellInfo.cellY, notify);
768
769        return info;
770    }
771
772    private static ApplicationInfo infoFromShortcutIntent(Context context, Intent data) {
773        Intent intent = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_INTENT);
774        String name = data.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
775        Bitmap bitmap = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_ICON);
776
777        Drawable icon = null;
778        boolean filtered = false;
779        boolean customIcon = false;
780        ShortcutIconResource iconResource = null;
781
782        if (bitmap != null) {
783            icon = new FastBitmapDrawable(Utilities.createBitmapThumbnail(bitmap, context));
784            filtered = true;
785            customIcon = true;
786        } else {
787            Parcelable extra = data.getParcelableExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE);
788            if (extra != null && extra instanceof ShortcutIconResource) {
789                try {
790                    iconResource = (ShortcutIconResource) extra;
791                    final PackageManager packageManager = context.getPackageManager();
792                    Resources resources = packageManager.getResourcesForApplication(
793                            iconResource.packageName);
794                    final int id = resources.getIdentifier(iconResource.resourceName, null, null);
795                    icon = resources.getDrawable(id);
796                } catch (Exception e) {
797                    w(LOG_TAG, "Could not load shortcut icon: " + extra);
798                }
799            }
800        }
801
802        if (icon == null) {
803            icon = context.getPackageManager().getDefaultActivityIcon();
804        }
805
806        final ApplicationInfo info = new ApplicationInfo();
807        info.icon = icon;
808        info.filtered = filtered;
809        info.title = name;
810        info.intent = intent;
811        info.customIcon = customIcon;
812        info.iconResource = iconResource;
813
814        return info;
815    }
816
817    @Override
818    protected void onNewIntent(Intent intent) {
819        super.onNewIntent(intent);
820
821        // Close the menu
822        if (Intent.ACTION_MAIN.equals(intent.getAction())) {
823            getWindow().closeAllPanels();
824
825            // Whatever we were doing is hereby canceled.
826            mWaitingForResult = false;
827
828            // Set this flag so that onResume knows to close the search dialog if it's open,
829            // because this was a new intent (thus a press of 'home' or some such) rather than
830            // for example onResume being called when the user pressed the 'back' button.
831            mIsNewIntent = true;
832
833            try {
834                dismissDialog(DIALOG_CREATE_SHORTCUT);
835                // Unlock the workspace if the dialog was showing
836            } catch (Exception e) {
837                // An exception is thrown if the dialog is not visible, which is fine
838            }
839
840            try {
841                dismissDialog(DIALOG_RENAME_FOLDER);
842                // Unlock the workspace if the dialog was showing
843            } catch (Exception e) {
844                // An exception is thrown if the dialog is not visible, which is fine
845            }
846
847            if ((intent.getFlags() & Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT) !=
848                    Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT) {
849
850                if (!mWorkspace.isDefaultScreenShowing()) {
851                    mWorkspace.moveToDefaultScreen();
852                }
853
854                closeAllApps(true);
855
856                final View v = getWindow().peekDecorView();
857                if (v != null && v.getWindowToken() != null) {
858                    InputMethodManager imm = (InputMethodManager)getSystemService(
859                            INPUT_METHOD_SERVICE);
860                    imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
861                }
862            } else {
863                closeAllApps(false);
864            }
865        }
866    }
867
868    @Override
869    protected void onRestoreInstanceState(Bundle savedInstanceState) {
870        // Do not call super here
871        mSavedInstanceState = savedInstanceState;
872    }
873
874    @Override
875    protected void onSaveInstanceState(Bundle outState) {
876        outState.putInt(RUNTIME_STATE_CURRENT_SCREEN, mWorkspace.getCurrentScreen());
877
878        final ArrayList<Folder> folders = mWorkspace.getOpenFolders();
879        if (folders.size() > 0) {
880            final int count = folders.size();
881            long[] ids = new long[count];
882            for (int i = 0; i < count; i++) {
883                final FolderInfo info = folders.get(i).getInfo();
884                ids[i] = info.id;
885            }
886            outState.putLongArray(RUNTIME_STATE_USER_FOLDERS, ids);
887        } else {
888            super.onSaveInstanceState(outState);
889        }
890
891        final boolean isConfigurationChange = getChangingConfigurations() != 0;
892
893        // When the drawer is opened and we are saving the state because of a
894        // configuration change
895        // TODO should not do this if the drawer is currently closing.
896        if (isAllAppsVisible() && isConfigurationChange) {
897            outState.putBoolean(RUNTIME_STATE_ALL_APPS_FOLDER, true);
898        }
899
900        if (mAddItemCellInfo != null && mAddItemCellInfo.valid && mWaitingForResult) {
901            final CellLayout.CellInfo addItemCellInfo = mAddItemCellInfo;
902            final CellLayout layout = (CellLayout) mWorkspace.getChildAt(addItemCellInfo.screen);
903
904            outState.putInt(RUNTIME_STATE_PENDING_ADD_SCREEN, addItemCellInfo.screen);
905            outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_X, addItemCellInfo.cellX);
906            outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_Y, addItemCellInfo.cellY);
907            outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_X, addItemCellInfo.spanX);
908            outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y, addItemCellInfo.spanY);
909            outState.putInt(RUNTIME_STATE_PENDING_ADD_COUNT_X, layout.getCountX());
910            outState.putInt(RUNTIME_STATE_PENDING_ADD_COUNT_Y, layout.getCountY());
911            outState.putBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS,
912                   layout.getOccupiedCells());
913        }
914
915        if (mFolderInfo != null && mWaitingForResult) {
916            outState.putBoolean(RUNTIME_STATE_PENDING_FOLDER_RENAME, true);
917            outState.putLong(RUNTIME_STATE_PENDING_FOLDER_RENAME_ID, mFolderInfo.id);
918        }
919    }
920
921    @Override
922    public void onDestroy() {
923        super.onDestroy();
924
925        try {
926            mAppWidgetHost.stopListening();
927        } catch (NullPointerException ex) {
928            w(LOG_TAG, "problem while stopping AppWidgetHost during Launcher destruction", ex);
929        }
930
931        TextKeyListener.getInstance().release();
932
933        mModel.stopLoader();
934
935        unbindDesktopItems();
936        AppInfoCache.unbindDrawables();
937
938        getContentResolver().unregisterContentObserver(mWidgetObserver);
939
940        dismissPreview(mPreviousView);
941        dismissPreview(mNextView);
942    }
943
944    @Override
945    public void startActivityForResult(Intent intent, int requestCode) {
946        if (requestCode >= 0) mWaitingForResult = true;
947        super.startActivityForResult(intent, requestCode);
948    }
949
950    @Override
951    public void startSearch(String initialQuery, boolean selectInitialQuery,
952            Bundle appSearchData, boolean globalSearch) {
953
954        closeAllApps(true);
955
956        // Slide the search widget to the top, if it's on the current screen,
957        // otherwise show the search dialog immediately.
958        Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
959        if (searchWidget == null) {
960            showSearchDialog(initialQuery, selectInitialQuery, appSearchData, globalSearch);
961        } else {
962            searchWidget.startSearch(initialQuery, selectInitialQuery, appSearchData, globalSearch);
963            // show the currently typed text in the search widget while sliding
964            searchWidget.setQuery(getTypedText());
965        }
966    }
967
968    /**
969     * Show the search dialog immediately, without changing the search widget.
970     *
971     * @see Activity#startSearch(String, boolean, android.os.Bundle, boolean)
972     */
973    void showSearchDialog(String initialQuery, boolean selectInitialQuery,
974            Bundle appSearchData, boolean globalSearch) {
975
976        if (initialQuery == null) {
977            // Use any text typed in the launcher as the initial query
978            initialQuery = getTypedText();
979            clearTypedText();
980        }
981        if (appSearchData == null) {
982            appSearchData = new Bundle();
983            appSearchData.putString(SearchManager.SOURCE, "launcher-search");
984        }
985
986        final SearchManager searchManager =
987                (SearchManager) getSystemService(Context.SEARCH_SERVICE);
988
989        final Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
990        if (searchWidget != null) {
991            // This gets called when the user leaves the search dialog to go back to
992            // the Launcher.
993            searchManager.setOnCancelListener(new SearchManager.OnCancelListener() {
994                public void onCancel() {
995                    searchManager.setOnCancelListener(null);
996                    stopSearch();
997                }
998            });
999        }
1000
1001        searchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(),
1002            appSearchData, globalSearch);
1003    }
1004
1005    /**
1006     * Cancel search dialog if it is open.
1007     */
1008    void stopSearch() {
1009        // Close search dialog
1010        SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
1011        searchManager.stopSearch();
1012        // Restore search widget to its normal position
1013        Search searchWidget = mWorkspace.findSearchWidgetOnCurrentScreen();
1014        if (searchWidget != null) {
1015            searchWidget.stopSearch(false);
1016        }
1017    }
1018
1019    @Override
1020    public boolean onCreateOptionsMenu(Menu menu) {
1021        if (isWorkspaceLocked()) {
1022            return false;
1023        }
1024
1025        super.onCreateOptionsMenu(menu);
1026        menu.add(MENU_GROUP_ADD, MENU_ADD, 0, R.string.menu_add)
1027                .setIcon(android.R.drawable.ic_menu_add)
1028                .setAlphabeticShortcut('A');
1029        menu.add(0, MENU_WALLPAPER_SETTINGS, 0, R.string.menu_wallpaper)
1030                 .setIcon(android.R.drawable.ic_menu_gallery)
1031                 .setAlphabeticShortcut('W');
1032        menu.add(0, MENU_SEARCH, 0, R.string.menu_search)
1033                .setIcon(android.R.drawable.ic_search_category_default)
1034                .setAlphabeticShortcut(SearchManager.MENU_KEY);
1035        menu.add(0, MENU_NOTIFICATIONS, 0, R.string.menu_notifications)
1036                .setIcon(com.android.internal.R.drawable.ic_menu_notifications)
1037                .setAlphabeticShortcut('N');
1038
1039        final Intent settings = new Intent(android.provider.Settings.ACTION_SETTINGS);
1040        settings.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
1041                Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
1042
1043        menu.add(0, MENU_SETTINGS, 0, R.string.menu_settings)
1044                .setIcon(android.R.drawable.ic_menu_preferences).setAlphabeticShortcut('P')
1045                .setIntent(settings);
1046
1047        return true;
1048    }
1049
1050    @Override
1051    public boolean onPrepareOptionsMenu(Menu menu) {
1052        super.onPrepareOptionsMenu(menu);
1053
1054        mMenuAddInfo = mWorkspace.findAllVacantCells(null);
1055        menu.setGroupEnabled(MENU_GROUP_ADD, mMenuAddInfo != null && mMenuAddInfo.valid);
1056
1057        return true;
1058    }
1059
1060    @Override
1061    public boolean onOptionsItemSelected(MenuItem item) {
1062        switch (item.getItemId()) {
1063            case MENU_ADD:
1064                addItems();
1065                return true;
1066            case MENU_WALLPAPER_SETTINGS:
1067                startWallpaper();
1068                return true;
1069            case MENU_SEARCH:
1070                onSearchRequested();
1071                return true;
1072            case MENU_NOTIFICATIONS:
1073                showNotifications();
1074                return true;
1075        }
1076
1077        return super.onOptionsItemSelected(item);
1078    }
1079
1080    /**
1081     * Indicates that we want global search for this activity by setting the globalSearch
1082     * argument for {@link #startSearch} to true.
1083     */
1084
1085    @Override
1086    public boolean onSearchRequested() {
1087        startSearch(null, false, null, true);
1088        return true;
1089    }
1090
1091    public boolean isWorkspaceLocked() {
1092        return mWorkspaceLoading || mWaitingForResult;
1093    }
1094
1095    private void addItems() {
1096        closeAllApps(true);
1097        showAddDialog(mMenuAddInfo);
1098    }
1099
1100    void addAppWidget(Intent data) {
1101        // TODO: catch bad widget exception when sent
1102        int appWidgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
1103
1104        String customWidget = data.getStringExtra(EXTRA_CUSTOM_WIDGET);
1105        if (SEARCH_WIDGET.equals(customWidget)) {
1106            // We don't need this any more, since this isn't a real app widget.
1107            mAppWidgetHost.deleteAppWidgetId(appWidgetId);
1108            // add the search widget
1109            addSearch();
1110        } else {
1111            AppWidgetProviderInfo appWidget = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
1112
1113            if (appWidget.configure != null) {
1114                // Launch over to configure widget, if needed
1115                Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_CONFIGURE);
1116                intent.setComponent(appWidget.configure);
1117                intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
1118
1119                startActivityForResult(intent, REQUEST_CREATE_APPWIDGET);
1120            } else {
1121                // Otherwise just add it
1122                onActivityResult(REQUEST_CREATE_APPWIDGET, Activity.RESULT_OK, data);
1123            }
1124        }
1125    }
1126
1127    void addSearch() {
1128        final Widget info = Widget.makeSearch();
1129        final CellLayout.CellInfo cellInfo = mAddItemCellInfo;
1130
1131        final int[] xy = mCellCoordinates;
1132        final int spanX = info.spanX;
1133        final int spanY = info.spanY;
1134
1135        if (!findSlot(cellInfo, xy, spanX, spanY)) return;
1136
1137        LauncherModel.addItemToDatabase(this, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
1138        mWorkspace.getCurrentScreen(), xy[0], xy[1], false);
1139
1140        final View view = mInflater.inflate(info.layoutResource, null);
1141        view.setTag(info);
1142        Search search = (Search) view.findViewById(R.id.widget_search);
1143        search.setLauncher(this);
1144
1145        mWorkspace.addInCurrentScreen(view, xy[0], xy[1], info.spanX, spanY);
1146    }
1147
1148    void processShortcut(Intent intent, int requestCodeApplication, int requestCodeShortcut) {
1149        // Handle case where user selected "Applications"
1150        String applicationName = getResources().getString(R.string.group_applications);
1151        String shortcutName = intent.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
1152
1153        if (applicationName != null && applicationName.equals(shortcutName)) {
1154            Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
1155            mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
1156
1157            Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1158            pickIntent.putExtra(Intent.EXTRA_INTENT, mainIntent);
1159            startActivityForResult(pickIntent, requestCodeApplication);
1160        } else {
1161            startActivityForResult(intent, requestCodeShortcut);
1162        }
1163    }
1164
1165    void addLiveFolder(Intent intent) {
1166        // Handle case where user selected "Folder"
1167        String folderName = getResources().getString(R.string.group_folder);
1168        String shortcutName = intent.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
1169
1170        if (folderName != null && folderName.equals(shortcutName)) {
1171            addFolder();
1172        } else {
1173            startActivityForResult(intent, REQUEST_CREATE_LIVE_FOLDER);
1174        }
1175    }
1176
1177    void addFolder() {
1178        UserFolderInfo folderInfo = new UserFolderInfo();
1179        folderInfo.title = getText(R.string.folder_name);
1180
1181        CellLayout.CellInfo cellInfo = mAddItemCellInfo;
1182        cellInfo.screen = mWorkspace.getCurrentScreen();
1183        if (!findSingleSlot(cellInfo)) return;
1184
1185        // Update the model
1186        LauncherModel.addItemToDatabase(this, folderInfo,
1187                LauncherSettings.Favorites.CONTAINER_DESKTOP,
1188                mWorkspace.getCurrentScreen(), cellInfo.cellX, cellInfo.cellY, false);
1189        mFolders.put(folderInfo.id, folderInfo);
1190
1191        // Create the view
1192        FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon, this,
1193                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), folderInfo);
1194        mWorkspace.addInCurrentScreen(newFolder,
1195                cellInfo.cellX, cellInfo.cellY, 1, 1, isWorkspaceLocked());
1196    }
1197
1198    void removeFolder(FolderInfo folder) {
1199        mFolders.remove(folder.id);
1200    }
1201
1202    private void completeAddLiveFolder(Intent data, CellLayout.CellInfo cellInfo) {
1203        cellInfo.screen = mWorkspace.getCurrentScreen();
1204        if (!findSingleSlot(cellInfo)) return;
1205
1206        final LiveFolderInfo info = addLiveFolder(this, data, cellInfo, false);
1207
1208        if (!mRestoring) {
1209            final View view = LiveFolderIcon.fromXml(R.layout.live_folder_icon, this,
1210                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), info);
1211            mWorkspace.addInCurrentScreen(view, cellInfo.cellX, cellInfo.cellY, 1, 1,
1212                    isWorkspaceLocked());
1213        }
1214    }
1215
1216    static LiveFolderInfo addLiveFolder(Context context, Intent data,
1217            CellLayout.CellInfo cellInfo, boolean notify) {
1218
1219        Intent baseIntent = data.getParcelableExtra(LiveFolders.EXTRA_LIVE_FOLDER_BASE_INTENT);
1220        String name = data.getStringExtra(LiveFolders.EXTRA_LIVE_FOLDER_NAME);
1221
1222        Drawable icon = null;
1223        boolean filtered = false;
1224        Intent.ShortcutIconResource iconResource = null;
1225
1226        Parcelable extra = data.getParcelableExtra(LiveFolders.EXTRA_LIVE_FOLDER_ICON);
1227        if (extra != null && extra instanceof Intent.ShortcutIconResource) {
1228            try {
1229                iconResource = (Intent.ShortcutIconResource) extra;
1230                final PackageManager packageManager = context.getPackageManager();
1231                Resources resources = packageManager.getResourcesForApplication(
1232                        iconResource.packageName);
1233                final int id = resources.getIdentifier(iconResource.resourceName, null, null);
1234                icon = resources.getDrawable(id);
1235            } catch (Exception e) {
1236                w(LOG_TAG, "Could not load live folder icon: " + extra);
1237            }
1238        }
1239
1240        if (icon == null) {
1241            icon = context.getResources().getDrawable(R.drawable.ic_launcher_folder);
1242        }
1243
1244        final LiveFolderInfo info = new LiveFolderInfo();
1245        info.icon = icon;
1246        info.filtered = filtered;
1247        info.title = name;
1248        info.iconResource = iconResource;
1249        info.uri = data.getData();
1250        info.baseIntent = baseIntent;
1251        info.displayMode = data.getIntExtra(LiveFolders.EXTRA_LIVE_FOLDER_DISPLAY_MODE,
1252                LiveFolders.DISPLAY_MODE_GRID);
1253
1254        LauncherModel.addItemToDatabase(context, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
1255                cellInfo.screen, cellInfo.cellX, cellInfo.cellY, notify);
1256        mFolders.put(info.id, info);
1257
1258        return info;
1259    }
1260
1261    private boolean findSingleSlot(CellLayout.CellInfo cellInfo) {
1262        final int[] xy = new int[2];
1263        if (findSlot(cellInfo, xy, 1, 1)) {
1264            cellInfo.cellX = xy[0];
1265            cellInfo.cellY = xy[1];
1266            return true;
1267        }
1268        return false;
1269    }
1270
1271    private boolean findSlot(CellLayout.CellInfo cellInfo, int[] xy, int spanX, int spanY) {
1272        if (!cellInfo.findCellForSpan(xy, spanX, spanY)) {
1273            boolean[] occupied = mSavedState != null ?
1274                    mSavedState.getBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS) : null;
1275            cellInfo = mWorkspace.findAllVacantCells(occupied);
1276            if (!cellInfo.findCellForSpan(xy, spanX, spanY)) {
1277                Toast.makeText(this, getString(R.string.out_of_space), Toast.LENGTH_SHORT).show();
1278                return false;
1279            }
1280        }
1281        return true;
1282    }
1283
1284    private void showNotifications() {
1285        final StatusBarManager statusBar = (StatusBarManager) getSystemService(STATUS_BAR_SERVICE);
1286        if (statusBar != null) {
1287            statusBar.expand();
1288        }
1289    }
1290
1291    private void startWallpaper() {
1292        closeAllApps(true);
1293        final Intent pickWallpaper = new Intent(Intent.ACTION_SET_WALLPAPER);
1294        Intent chooser = Intent.createChooser(pickWallpaper,
1295                getText(R.string.chooser_wallpaper));
1296        WallpaperManager wm = (WallpaperManager)
1297                getSystemService(Context.WALLPAPER_SERVICE);
1298        WallpaperInfo wi = wm.getWallpaperInfo();
1299        if (wi != null && wi.getSettingsActivity() != null) {
1300            LabeledIntent li = new LabeledIntent(getPackageName(),
1301                    R.string.configure_wallpaper, 0);
1302            li.setClassName(wi.getPackageName(), wi.getSettingsActivity());
1303            chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Intent[] { li });
1304        }
1305        startActivityForResult(chooser, REQUEST_PICK_WALLPAPER);
1306    }
1307
1308    private void registerContentObservers() {
1309        ContentResolver resolver = getContentResolver();
1310        resolver.registerContentObserver(LauncherProvider.CONTENT_APPWIDGET_RESET_URI,
1311                true, mWidgetObserver);
1312    }
1313
1314    @Override
1315    public boolean dispatchKeyEvent(KeyEvent event) {
1316        if (event.getAction() == KeyEvent.ACTION_DOWN) {
1317            switch (event.getKeyCode()) {
1318                case KeyEvent.KEYCODE_BACK:
1319                    return true;
1320                case KeyEvent.KEYCODE_HOME:
1321                    return true;
1322            }
1323        } else if (event.getAction() == KeyEvent.ACTION_UP) {
1324            switch (event.getKeyCode()) {
1325                case KeyEvent.KEYCODE_BACK:
1326                    if (!event.isCanceled()) {
1327                        mWorkspace.dispatchKeyEvent(event);
1328                        if (isAllAppsVisible()) {
1329                            closeAllApps(true);
1330                        } else {
1331                            closeFolder();
1332                        }
1333                        dismissPreview(mPreviousView);
1334                        dismissPreview(mNextView);
1335                    }
1336                    return true;
1337                case KeyEvent.KEYCODE_HOME:
1338                    return true;
1339            }
1340        }
1341
1342        return super.dispatchKeyEvent(event);
1343    }
1344
1345    private void closeFolder() {
1346        Folder folder = mWorkspace.getOpenFolder();
1347        if (folder != null) {
1348            closeFolder(folder);
1349        }
1350    }
1351
1352    void closeFolder(Folder folder) {
1353        folder.getInfo().opened = false;
1354        ViewGroup parent = (ViewGroup) folder.getParent();
1355        if (parent != null) {
1356            parent.removeView(folder);
1357            if (folder instanceof DropTarget) {
1358                // Live folders aren't DropTargets.
1359                mDragController.removeDropTarget((DropTarget)folder);
1360            }
1361        }
1362        folder.onClose();
1363    }
1364
1365    /**
1366     * Re-listen when widgets are reset.
1367     */
1368    private void onAppWidgetReset() {
1369        mAppWidgetHost.startListening();
1370    }
1371
1372    /**
1373     * Go through the and disconnect any of the callbacks in the drawables and the views or we
1374     * leak the previous Home screen on orientation change.
1375     */
1376    private void unbindDesktopItems() {
1377        for (ItemInfo item: mDesktopItems) {
1378            item.unbind();
1379        }
1380    }
1381
1382    /**
1383     * Launches the intent referred by the clicked shortcut.
1384     *
1385     * @param v The view representing the clicked shortcut.
1386     */
1387    public void onClick(View v) {
1388        Object tag = v.getTag();
1389        if (tag instanceof ApplicationInfo) {
1390            // Open shortcut
1391            final Intent intent = ((ApplicationInfo) tag).intent;
1392            startActivitySafely(intent);
1393            mExitingBecauseOfLaunch = true;
1394        } else if (tag instanceof FolderInfo) {
1395            handleFolderClick((FolderInfo) tag);
1396        } else if (v == mHandleView) {
1397            Log.d(TAG, "onClick");
1398            if (isAllAppsVisible()) {
1399                closeAllApps(true);
1400            } else {
1401                showAllApps();
1402            }
1403        }
1404    }
1405
1406    void startActivitySafely(Intent intent) {
1407        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
1408        try {
1409            startActivity(intent);
1410        } catch (ActivityNotFoundException e) {
1411            Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
1412        } catch (SecurityException e) {
1413            Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
1414            e(LOG_TAG, "Launcher does not have the permission to launch " + intent +
1415                    ". Make sure to create a MAIN intent-filter for the corresponding activity " +
1416                    "or use the exported attribute for this activity.", e);
1417        }
1418    }
1419
1420    private void handleFolderClick(FolderInfo folderInfo) {
1421        if (!folderInfo.opened) {
1422            // Close any open folder
1423            closeFolder();
1424            // Open the requested folder
1425            openFolder(folderInfo);
1426        } else {
1427            // Find the open folder...
1428            Folder openFolder = mWorkspace.getFolderForTag(folderInfo);
1429            int folderScreen;
1430            if (openFolder != null) {
1431                folderScreen = mWorkspace.getScreenForView(openFolder);
1432                // .. and close it
1433                closeFolder(openFolder);
1434                if (folderScreen != mWorkspace.getCurrentScreen()) {
1435                    // Close any folder open on the current screen
1436                    closeFolder();
1437                    // Pull the folder onto this screen
1438                    openFolder(folderInfo);
1439                }
1440            }
1441        }
1442    }
1443
1444    /**
1445     * Opens the user fodler described by the specified tag. The opening of the folder
1446     * is animated relative to the specified View. If the View is null, no animation
1447     * is played.
1448     *
1449     * @param folderInfo The FolderInfo describing the folder to open.
1450     */
1451    private void openFolder(FolderInfo folderInfo) {
1452        Folder openFolder;
1453
1454        if (folderInfo instanceof UserFolderInfo) {
1455            openFolder = UserFolder.fromXml(this);
1456        } else if (folderInfo instanceof LiveFolderInfo) {
1457            openFolder = com.android.launcher2.LiveFolder.fromXml(this, folderInfo);
1458        } else {
1459            return;
1460        }
1461
1462        openFolder.setDragController(mDragController);
1463        openFolder.setLauncher(this);
1464
1465        openFolder.bind(folderInfo);
1466        folderInfo.opened = true;
1467
1468        mWorkspace.addInScreen(openFolder, folderInfo.screen, 0, 0, 4, 4);
1469        openFolder.onOpen();
1470    }
1471
1472    public boolean onLongClick(View v) {
1473        switch (v.getId()) {
1474            case R.id.previous_screen:
1475                showPreviousPreview(v);
1476                return true;
1477            case R.id.next_screen:
1478                showNextPreview(v);
1479                return true;
1480        }
1481
1482        if (isWorkspaceLocked()) {
1483            return false;
1484        }
1485
1486        if (!(v instanceof CellLayout)) {
1487            v = (View) v.getParent();
1488        }
1489
1490        CellLayout.CellInfo cellInfo = (CellLayout.CellInfo) v.getTag();
1491
1492        // This happens when long clicking an item with the dpad/trackball
1493        if (cellInfo == null) {
1494            return true;
1495        }
1496
1497        if (mWorkspace.allowLongPress()) {
1498            if (cellInfo.cell == null) {
1499                if (cellInfo.valid) {
1500                    // User long pressed on empty space
1501                    mWorkspace.setAllowLongPress(false);
1502                    showAddDialog(cellInfo);
1503                }
1504            } else {
1505                if (!(cellInfo.cell instanceof Folder)) {
1506                    // User long pressed on an item
1507                    mWorkspace.startDrag(cellInfo);
1508                }
1509            }
1510        }
1511        return true;
1512    }
1513
1514    @SuppressWarnings({"unchecked"})
1515    private void dismissPreview(View v) {
1516        PopupWindow window = (PopupWindow) v.getTag();
1517        if (window != null) {
1518            window.setOnDismissListener(null);
1519            window.dismiss();
1520
1521            ViewGroup group = (ViewGroup) v.getTag(R.id.workspace);
1522            int count = group.getChildCount();
1523            for (int i = 0; i < count; i++) {
1524                ((ImageView) group.getChildAt(i)).setImageDrawable(null);
1525            }
1526
1527            ArrayList<Bitmap> bitmaps = (ArrayList<Bitmap>) v.getTag(R.id.icon);
1528            for (Bitmap bitmap : bitmaps) bitmap.recycle();
1529
1530            v.setTag(R.id.workspace, null);
1531            v.setTag(R.id.icon, null);
1532        }
1533        v.setTag(null);
1534    }
1535
1536    private void showPreviousPreview(View anchor) {
1537        int current = mWorkspace.getCurrentScreen();
1538        if (current <= 0) return;
1539
1540        showPreviews(anchor, 0, current);
1541    }
1542
1543    private void showNextPreview(View anchor) {
1544        int current = mWorkspace.getCurrentScreen();
1545        if (current >= mWorkspace.getChildCount() - 1) return;
1546
1547        showPreviews(anchor, current + 1, mWorkspace.getChildCount());
1548    }
1549
1550    @Override
1551    public void onWindowFocusChanged(boolean hasFocus) {
1552        super.onWindowFocusChanged(hasFocus);
1553
1554        if (!hasFocus) {
1555            dismissPreview(mPreviousView);
1556            dismissPreview(mNextView);
1557        }
1558    }
1559
1560    private void showPreviews(final View anchor, int start, int end) {
1561        Drawable d = getResources().getDrawable(R.drawable.preview_popup);
1562
1563        Workspace workspace = mWorkspace;
1564        CellLayout cell = ((CellLayout) workspace.getChildAt(start));
1565
1566        float max = workspace.getChildCount() - 1;
1567
1568        Rect r = new Rect();
1569        d.getPadding(r);
1570        int extraW = (int) ((r.left + r.right) * max);
1571        int extraH = r.top + r.bottom;
1572
1573        int aW = cell.getWidth() - extraW;
1574        float w = aW / max;
1575
1576        int width = cell.getWidth();
1577        int height = cell.getHeight();
1578        int x = cell.getLeftPadding();
1579        int y = cell.getTopPadding();
1580        width -= (x + cell.getRightPadding());
1581        height -= (y + cell.getBottomPadding());
1582
1583        float scale = w / width;
1584
1585        int count = end - start;
1586
1587        final float sWidth = width * scale;
1588        float sHeight = height * scale;
1589
1590        LinearLayout preview = new LinearLayout(this);
1591        preview.setFocusable(true);
1592
1593        PreviewTouchHandler handler = new PreviewTouchHandler(anchor);
1594        ArrayList<Bitmap> bitmaps = new ArrayList<Bitmap>(count);
1595
1596        for (int i = start; i < end; i++) {
1597            ImageView image = new ImageView(this);
1598            cell = (CellLayout) workspace.getChildAt(i);
1599
1600            Bitmap bitmap = Bitmap.createBitmap((int) sWidth, (int) sHeight,
1601                    Bitmap.Config.ARGB_8888);
1602
1603            Canvas c = new Canvas(bitmap);
1604            c.scale(scale, scale);
1605            c.translate(-cell.getLeftPadding(), -cell.getTopPadding());
1606            cell.dispatchDraw(c);
1607
1608            image.setBackgroundDrawable(d);
1609            image.setImageBitmap(bitmap);
1610            image.setTag(i);
1611            image.setOnClickListener(handler);
1612            bitmaps.add(bitmap);
1613
1614            preview.addView(image,
1615                    ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
1616        }
1617
1618        PopupWindow p = new PopupWindow(this);
1619        p.setContentView(preview);
1620        p.setWidth((int) (sWidth * count + extraW));
1621        p.setHeight((int) (sHeight + extraH));
1622        p.setAnimationStyle(R.style.AnimationPreview);
1623        p.setOutsideTouchable(true);
1624        p.setBackgroundDrawable(null);
1625        p.showAsDropDown(anchor, 0, 0);
1626
1627        p.setOnDismissListener(new PopupWindow.OnDismissListener() {
1628            public void onDismiss() {
1629                dismissPreview(anchor);
1630            }
1631        });
1632
1633        anchor.setTag(p);
1634        anchor.setTag(R.id.workspace, preview);
1635        anchor.setTag(R.id.icon, bitmaps);
1636    }
1637
1638    class PreviewTouchHandler implements View.OnClickListener {
1639        private final View mAnchor;
1640
1641        public PreviewTouchHandler(View anchor) {
1642            mAnchor = anchor;
1643        }
1644
1645        public void onClick(View v) {
1646            mWorkspace.snapToScreen((Integer) v.getTag());
1647            dismissPreview(mAnchor);
1648        }
1649    }
1650
1651    View getDrawerHandle() {
1652        return mHandleView;
1653    }
1654
1655    Workspace getWorkspace() {
1656        return mWorkspace;
1657    }
1658
1659    @Override
1660    protected Dialog onCreateDialog(int id) {
1661        switch (id) {
1662            case DIALOG_CREATE_SHORTCUT:
1663                return new CreateShortcut().createDialog();
1664            case DIALOG_RENAME_FOLDER:
1665                return new RenameFolder().createDialog();
1666        }
1667
1668        return super.onCreateDialog(id);
1669    }
1670
1671    @Override
1672    protected void onPrepareDialog(int id, Dialog dialog) {
1673        switch (id) {
1674            case DIALOG_CREATE_SHORTCUT:
1675                break;
1676            case DIALOG_RENAME_FOLDER:
1677                if (mFolderInfo != null) {
1678                    EditText input = (EditText) dialog.findViewById(R.id.folder_name);
1679                    final CharSequence text = mFolderInfo.title;
1680                    input.setText(text);
1681                    input.setSelection(0, text.length());
1682                }
1683                break;
1684        }
1685    }
1686
1687    void showRenameDialog(FolderInfo info) {
1688        mFolderInfo = info;
1689        mWaitingForResult = true;
1690        showDialog(DIALOG_RENAME_FOLDER);
1691    }
1692
1693    private void showAddDialog(CellLayout.CellInfo cellInfo) {
1694        mAddItemCellInfo = cellInfo;
1695        mWaitingForResult = true;
1696        showDialog(DIALOG_CREATE_SHORTCUT);
1697    }
1698
1699    private void pickShortcut(int requestCode, int title) {
1700        Bundle bundle = new Bundle();
1701
1702        ArrayList<String> shortcutNames = new ArrayList<String>();
1703        shortcutNames.add(getString(R.string.group_applications));
1704        bundle.putStringArrayList(Intent.EXTRA_SHORTCUT_NAME, shortcutNames);
1705
1706        ArrayList<ShortcutIconResource> shortcutIcons = new ArrayList<ShortcutIconResource>();
1707        shortcutIcons.add(ShortcutIconResource.fromContext(Launcher.this,
1708                        R.drawable.ic_launcher_application));
1709        bundle.putParcelableArrayList(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, shortcutIcons);
1710
1711        Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1712        pickIntent.putExtra(Intent.EXTRA_INTENT, new Intent(Intent.ACTION_CREATE_SHORTCUT));
1713        pickIntent.putExtra(Intent.EXTRA_TITLE, getText(title));
1714        pickIntent.putExtras(bundle);
1715
1716        startActivityForResult(pickIntent, requestCode);
1717    }
1718
1719    private class RenameFolder {
1720        private EditText mInput;
1721
1722        Dialog createDialog() {
1723            mWaitingForResult = true;
1724            final View layout = View.inflate(Launcher.this, R.layout.rename_folder, null);
1725            mInput = (EditText) layout.findViewById(R.id.folder_name);
1726
1727            AlertDialog.Builder builder = new AlertDialog.Builder(Launcher.this);
1728            builder.setIcon(0);
1729            builder.setTitle(getString(R.string.rename_folder_title));
1730            builder.setCancelable(true);
1731            builder.setOnCancelListener(new Dialog.OnCancelListener() {
1732                public void onCancel(DialogInterface dialog) {
1733                    cleanup();
1734                }
1735            });
1736            builder.setNegativeButton(getString(R.string.cancel_action),
1737                new Dialog.OnClickListener() {
1738                    public void onClick(DialogInterface dialog, int which) {
1739                        cleanup();
1740                    }
1741                }
1742            );
1743            builder.setPositiveButton(getString(R.string.rename_action),
1744                new Dialog.OnClickListener() {
1745                    public void onClick(DialogInterface dialog, int which) {
1746                        changeFolderName();
1747                    }
1748                }
1749            );
1750            builder.setView(layout);
1751
1752            final AlertDialog dialog = builder.create();
1753            dialog.setOnShowListener(new DialogInterface.OnShowListener() {
1754                public void onShow(DialogInterface dialog) {
1755                    mInput.requestFocus();
1756                    InputMethodManager inputManager = (InputMethodManager)
1757                            getSystemService(Context.INPUT_METHOD_SERVICE);
1758                    inputManager.showSoftInput(mInput, 0);
1759                }
1760            });
1761
1762            return dialog;
1763        }
1764
1765        private void changeFolderName() {
1766            final String name = mInput.getText().toString();
1767            if (!TextUtils.isEmpty(name)) {
1768                // Make sure we have the right folder info
1769                mFolderInfo = mFolders.get(mFolderInfo.id);
1770                mFolderInfo.title = name;
1771                LauncherModel.updateItemInDatabase(Launcher.this, mFolderInfo);
1772
1773                if (mWorkspaceLoading) {
1774                    lockAllApps();
1775                    mModel.setWorkspaceDirty();
1776                    mModel.startLoader(Launcher.this, false);
1777                } else {
1778                    final FolderIcon folderIcon = (FolderIcon)
1779                            mWorkspace.getViewForTag(mFolderInfo);
1780                    if (folderIcon != null) {
1781                        folderIcon.setText(name);
1782                        getWorkspace().requestLayout();
1783                    } else {
1784                        lockAllApps();
1785                        mModel.setWorkspaceDirty();
1786                        mWorkspaceLoading = true;
1787                        mModel.startLoader(Launcher.this, false);
1788                    }
1789                }
1790            }
1791            cleanup();
1792        }
1793
1794        private void cleanup() {
1795            dismissDialog(DIALOG_RENAME_FOLDER);
1796            mWaitingForResult = false;
1797            mFolderInfo = null;
1798        }
1799    }
1800
1801    boolean isAllAppsVisible() {
1802        return mAllAppsGrid.isVisible();
1803    }
1804
1805    void showAllApps() {
1806        mAllAppsGrid.zoom(1.0f);
1807        //mWorkspace.hide();
1808
1809        mAllAppsGrid.setFocusable(true);
1810        mAllAppsGrid.requestFocus();
1811
1812        // TODO: fade these two too
1813        mDeleteZone.setVisibility(View.GONE);
1814        //mHandleView.setVisibility(View.GONE);
1815    }
1816
1817    void closeAllApps(boolean animated) {
1818        if (mAllAppsGrid.isVisible()) {
1819            mAllAppsGrid.zoom(0.0f);
1820            mAllAppsGrid.setFocusable(false);
1821            mWorkspace.getChildAt(mWorkspace.getCurrentScreen()).requestFocus();
1822
1823
1824            // TODO: fade these two too
1825            /*
1826            mDeleteZone.setVisibility(View.VISIBLE);
1827            mHandleView.setVisibility(View.VISIBLE);
1828            */
1829        }
1830    }
1831
1832    void lockAllApps() {
1833        // TODO
1834    }
1835
1836    void unlockAllApps() {
1837        // TODO
1838    }
1839
1840    /**
1841     * Displays the shortcut creation dialog and launches, if necessary, the
1842     * appropriate activity.
1843     */
1844    private class CreateShortcut implements DialogInterface.OnClickListener,
1845            DialogInterface.OnCancelListener, DialogInterface.OnDismissListener,
1846            DialogInterface.OnShowListener {
1847
1848        private AddAdapter mAdapter;
1849
1850        Dialog createDialog() {
1851            mWaitingForResult = true;
1852
1853            mAdapter = new AddAdapter(Launcher.this);
1854
1855            final AlertDialog.Builder builder = new AlertDialog.Builder(Launcher.this);
1856            builder.setTitle(getString(R.string.menu_item_add_item));
1857            builder.setAdapter(mAdapter, this);
1858
1859            builder.setInverseBackgroundForced(true);
1860
1861            AlertDialog dialog = builder.create();
1862            dialog.setOnCancelListener(this);
1863            dialog.setOnDismissListener(this);
1864            dialog.setOnShowListener(this);
1865
1866            return dialog;
1867        }
1868
1869        public void onCancel(DialogInterface dialog) {
1870            mWaitingForResult = false;
1871            cleanup();
1872        }
1873
1874        public void onDismiss(DialogInterface dialog) {
1875        }
1876
1877        private void cleanup() {
1878            dismissDialog(DIALOG_CREATE_SHORTCUT);
1879        }
1880
1881        /**
1882         * Handle the action clicked in the "Add to home" dialog.
1883         */
1884        public void onClick(DialogInterface dialog, int which) {
1885            Resources res = getResources();
1886            cleanup();
1887
1888            switch (which) {
1889                case AddAdapter.ITEM_SHORTCUT: {
1890                    // Insert extra item to handle picking application
1891                    pickShortcut(REQUEST_PICK_SHORTCUT, R.string.title_select_shortcut);
1892                    break;
1893                }
1894
1895                case AddAdapter.ITEM_APPWIDGET: {
1896                    int appWidgetId = Launcher.this.mAppWidgetHost.allocateAppWidgetId();
1897
1898                    Intent pickIntent = new Intent(AppWidgetManager.ACTION_APPWIDGET_PICK);
1899                    pickIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
1900                    // add the search widget
1901                    ArrayList<AppWidgetProviderInfo> customInfo =
1902                            new ArrayList<AppWidgetProviderInfo>();
1903                    AppWidgetProviderInfo info = new AppWidgetProviderInfo();
1904                    info.provider = new ComponentName(getPackageName(), "XXX.YYY");
1905                    info.label = getString(R.string.group_search);
1906                    info.icon = R.drawable.ic_search_widget;
1907                    customInfo.add(info);
1908                    pickIntent.putParcelableArrayListExtra(
1909                            AppWidgetManager.EXTRA_CUSTOM_INFO, customInfo);
1910                    ArrayList<Bundle> customExtras = new ArrayList<Bundle>();
1911                    Bundle b = new Bundle();
1912                    b.putString(EXTRA_CUSTOM_WIDGET, SEARCH_WIDGET);
1913                    customExtras.add(b);
1914                    pickIntent.putParcelableArrayListExtra(
1915                            AppWidgetManager.EXTRA_CUSTOM_EXTRAS, customExtras);
1916                    // start the pick activity
1917                    startActivityForResult(pickIntent, REQUEST_PICK_APPWIDGET);
1918                    break;
1919                }
1920
1921                case AddAdapter.ITEM_LIVE_FOLDER: {
1922                    // Insert extra item to handle inserting folder
1923                    Bundle bundle = new Bundle();
1924
1925                    ArrayList<String> shortcutNames = new ArrayList<String>();
1926                    shortcutNames.add(res.getString(R.string.group_folder));
1927                    bundle.putStringArrayList(Intent.EXTRA_SHORTCUT_NAME, shortcutNames);
1928
1929                    ArrayList<ShortcutIconResource> shortcutIcons =
1930                            new ArrayList<ShortcutIconResource>();
1931                    shortcutIcons.add(ShortcutIconResource.fromContext(Launcher.this,
1932                            R.drawable.ic_launcher_folder));
1933                    bundle.putParcelableArrayList(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, shortcutIcons);
1934
1935                    Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1936                    pickIntent.putExtra(Intent.EXTRA_INTENT,
1937                            new Intent(LiveFolders.ACTION_CREATE_LIVE_FOLDER));
1938                    pickIntent.putExtra(Intent.EXTRA_TITLE,
1939                            getText(R.string.title_select_live_folder));
1940                    pickIntent.putExtras(bundle);
1941
1942                    startActivityForResult(pickIntent, REQUEST_PICK_LIVE_FOLDER);
1943                    break;
1944                }
1945
1946                case AddAdapter.ITEM_WALLPAPER: {
1947                    startWallpaper();
1948                    break;
1949                }
1950            }
1951        }
1952
1953        public void onShow(DialogInterface dialog) {
1954        }
1955    }
1956
1957    /**
1958     * Receives notifications whenever the appwidgets are reset.
1959     */
1960    private class AppWidgetResetObserver extends ContentObserver {
1961        public AppWidgetResetObserver() {
1962            super(new Handler());
1963        }
1964
1965        @Override
1966        public void onChange(boolean selfChange) {
1967            onAppWidgetReset();
1968        }
1969    }
1970
1971    /**
1972     * Implementation of the method from LauncherModel.Callbacks.
1973     */
1974    public int getCurrentWorkspaceScreen() {
1975        return mWorkspace.getCurrentScreen();
1976    }
1977
1978    /**
1979     * Refreshes the shortcuts shown on the workspace.
1980     *
1981     * Implementation of the method from LauncherModel.Callbacks.
1982     */
1983    public void startBinding() {
1984        final Workspace workspace = mWorkspace;
1985        int count = workspace.getChildCount();
1986        for (int i = 0; i < count; i++) {
1987            // Use removeAllViewsInLayout() to avoid an extra requestLayout() and invalidate().
1988            ((ViewGroup) workspace.getChildAt(i)).removeAllViewsInLayout();
1989        }
1990
1991        if (DEBUG_USER_INTERFACE) {
1992            android.widget.Button finishButton = new android.widget.Button(this);
1993            finishButton.setText("Finish");
1994            workspace.addInScreen(finishButton, 1, 0, 0, 1, 1);
1995
1996            finishButton.setOnClickListener(new android.widget.Button.OnClickListener() {
1997                public void onClick(View v) {
1998                    finish();
1999                }
2000            });
2001        }
2002    }
2003
2004    /**
2005     * Bind the items start-end from the list.
2006     *
2007     * Implementation of the method from LauncherModel.Callbacks.
2008     */
2009    public void bindItems(ArrayList<ItemInfo> shortcuts, int start, int end) {
2010
2011        final Workspace workspace = mWorkspace;
2012
2013        for (int i=start; i<end; i++) {
2014            final ItemInfo item = shortcuts.get(i);
2015            mDesktopItems.add(item);
2016            switch (item.itemType) {
2017                case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION:
2018                case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
2019                    final View shortcut = createShortcut((ApplicationInfo) item);
2020                    workspace.addInScreen(shortcut, item.screen, item.cellX, item.cellY, 1, 1,
2021                            false);
2022                    break;
2023                case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER:
2024                    final FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon, this,
2025                            (ViewGroup) workspace.getChildAt(workspace.getCurrentScreen()),
2026                            (UserFolderInfo) item);
2027                    workspace.addInScreen(newFolder, item.screen, item.cellX, item.cellY, 1, 1,
2028                            false);
2029                    break;
2030                case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER:
2031                    final FolderIcon newLiveFolder = LiveFolderIcon.fromXml(
2032                            R.layout.live_folder_icon, this,
2033                            (ViewGroup) workspace.getChildAt(workspace.getCurrentScreen()),
2034                            (LiveFolderInfo) item);
2035                    workspace.addInScreen(newLiveFolder, item.screen, item.cellX, item.cellY, 1, 1,
2036                            false);
2037                    break;
2038                case LauncherSettings.Favorites.ITEM_TYPE_WIDGET_SEARCH:
2039                    final int screen = workspace.getCurrentScreen();
2040                    final View view = mInflater.inflate(R.layout.widget_search,
2041                            (ViewGroup) workspace.getChildAt(screen), false);
2042
2043                    Search search = (Search) view.findViewById(R.id.widget_search);
2044                    search.setLauncher(this);
2045
2046                    final Widget widget = (Widget) item;
2047                    view.setTag(widget);
2048
2049                    workspace.addWidget(view, widget, false);
2050                    break;
2051            }
2052        }
2053
2054        workspace.requestLayout();
2055    }
2056
2057    /**
2058     * Implementation of the method from LauncherModel.Callbacks.
2059     */
2060    public void bindFolders(HashMap<Long, FolderInfo> folders) {
2061        mFolders.clear();
2062        mFolders.putAll(folders);
2063    }
2064
2065    /**
2066     * Add the views for a widget to the workspace.
2067     *
2068     * Implementation of the method from LauncherModel.Callbacks.
2069     */
2070    public void bindAppWidget(LauncherAppWidgetInfo item) {
2071        final Workspace workspace = mWorkspace;
2072
2073        final int appWidgetId = item.appWidgetId;
2074        final AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
2075        item.hostView = mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
2076
2077        item.hostView.setAppWidget(appWidgetId, appWidgetInfo);
2078        item.hostView.setTag(item);
2079
2080        workspace.addInScreen(item.hostView, item.screen, item.cellX,
2081                item.cellY, item.spanX, item.spanY, false);
2082
2083        workspace.requestLayout();
2084
2085        mDesktopItems.add(item);
2086    }
2087
2088    /**
2089     * Callback saying that there aren't any more items to bind.
2090     *
2091     * Implementation of the method from LauncherModel.Callbacks.
2092     */
2093    public void finishBindingItems() {
2094        if (mSavedState != null) {
2095            if (!mWorkspace.hasFocus()) {
2096                mWorkspace.getChildAt(mWorkspace.getCurrentScreen()).requestFocus();
2097            }
2098
2099            final long[] userFolders = mSavedState.getLongArray(RUNTIME_STATE_USER_FOLDERS);
2100            if (userFolders != null) {
2101                for (long folderId : userFolders) {
2102                    final FolderInfo info = mFolders.get(folderId);
2103                    if (info != null) {
2104                        openFolder(info);
2105                    }
2106                }
2107                final Folder openFolder = mWorkspace.getOpenFolder();
2108                if (openFolder != null) {
2109                    openFolder.requestFocus();
2110                }
2111            }
2112
2113            final boolean allApps = mSavedState.getBoolean(RUNTIME_STATE_ALL_APPS_FOLDER, false);
2114            if (allApps) {
2115                showAllApps();
2116            }
2117
2118            mSavedState = null;
2119        }
2120
2121        if (mSavedInstanceState != null) {
2122            super.onRestoreInstanceState(mSavedInstanceState);
2123            mSavedInstanceState = null;
2124        }
2125
2126        Log.d(TAG, "finishBindingItems done");
2127        mWorkspaceLoading = false;
2128    }
2129
2130    /**
2131     * Add the icons for all apps.
2132     *
2133     * Implementation of the method from LauncherModel.Callbacks.
2134     */
2135    public void bindAllApplications(ArrayList<ApplicationInfo> apps) {
2136        mAllAppsGrid.setApps(apps);
2137    }
2138
2139    /**
2140     * A package was installed.
2141     *
2142     * Implementation of the method from LauncherModel.Callbacks.
2143     */
2144    public void bindPackageAdded(ArrayList<ApplicationInfo> apps) {
2145        removeDialog(DIALOG_CREATE_SHORTCUT);
2146        mAllAppsGrid.addApps(apps);
2147    }
2148
2149    /**
2150     * A package was updated.
2151     *
2152     * Implementation of the method from LauncherModel.Callbacks.
2153     */
2154    public void bindPackageUpdated(String packageName, ArrayList<ApplicationInfo> apps) {
2155        removeDialog(DIALOG_CREATE_SHORTCUT);
2156        mWorkspace.updateShortcutsForPackage(packageName);
2157    }
2158
2159    /**
2160     * A package was uninstalled.
2161     *
2162     * Implementation of the method from LauncherModel.Callbacks.
2163     */
2164    public void bindPackageRemoved(String packageName, ArrayList<ApplicationInfo> apps) {
2165        removeDialog(DIALOG_CREATE_SHORTCUT);
2166        mWorkspace.removeShortcutsForPackage(packageName);
2167        mAllAppsGrid.removeApps(apps);
2168    }
2169}
2170