Launcher.java revision 6569f2c80e179c2f8ed73dae6b01d971ec20f005 
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 com.android.common.Search;
20import com.android.launcher.R;
21
22import android.app.Activity;
23import android.app.AlertDialog;
24import android.app.Dialog;
25import android.app.SearchManager;
26import android.app.StatusBarManager;
27import android.app.WallpaperManager;
28import android.appwidget.AppWidgetManager;
29import android.appwidget.AppWidgetProviderInfo;
30import android.content.ActivityNotFoundException;
31import android.content.BroadcastReceiver;
32import android.content.ComponentName;
33import android.content.ContentResolver;
34import android.content.Context;
35import android.content.DialogInterface;
36import android.content.Intent;
37import android.content.IntentFilter;
38import android.content.Intent.ShortcutIconResource;
39import android.content.pm.ActivityInfo;
40import android.content.pm.PackageManager;
41import android.content.pm.ResolveInfo;
42import android.content.res.Configuration;
43import android.content.res.Resources;
44import android.content.res.TypedArray;
45import android.database.ContentObserver;
46import android.graphics.Bitmap;
47import android.graphics.Canvas;
48import android.graphics.Rect;
49import android.graphics.drawable.ColorDrawable;
50import android.graphics.drawable.Drawable;
51import android.net.Uri;
52import android.os.Bundle;
53import android.os.Handler;
54import android.os.Parcelable;
55import android.os.SystemClock;
56import android.os.SystemProperties;
57import android.provider.LiveFolders;
58import android.text.Selection;
59import android.text.SpannableStringBuilder;
60import android.text.TextUtils;
61import android.text.method.TextKeyListener;
62import android.util.Log;
63import android.view.Display;
64import android.view.HapticFeedbackConstants;
65import android.view.KeyEvent;
66import android.view.LayoutInflater;
67import android.view.Menu;
68import android.view.MenuItem;
69import android.view.MotionEvent;
70import android.view.View;
71import android.view.ViewGroup;
72import android.view.WindowManager;
73import android.view.View.OnLongClickListener;
74import android.view.animation.Animation;
75import android.view.animation.AnimationUtils;
76import android.view.inputmethod.InputMethodManager;
77import android.widget.EditText;
78import android.widget.ImageView;
79import android.widget.LinearLayout;
80import android.widget.PopupWindow;
81import android.widget.TabHost;
82import android.widget.TextView;
83import android.widget.Toast;
84
85import java.io.DataInputStream;
86import java.io.DataOutputStream;
87import java.io.FileNotFoundException;
88import java.io.IOException;
89import java.util.ArrayList;
90import java.util.HashMap;
91import java.util.List;
92
93/**
94 * Default launcher application.
95 */
96public final class Launcher extends Activity
97        implements View.OnClickListener, OnLongClickListener, LauncherModel.Callbacks,
98                   AllAppsView.Watcher, View.OnTouchListener {
99    static final String TAG = "Launcher";
100    static final boolean LOGD = false;
101
102    static final boolean PROFILE_STARTUP = false;
103    static final boolean DEBUG_WIDGETS = false;
104    static final boolean DEBUG_USER_INTERFACE = false;
105
106    private static final int WALLPAPER_SCREENS_SPAN = 2;
107
108    private static final int MENU_GROUP_ADD = 1;
109    private static final int MENU_GROUP_WALLPAPER = MENU_GROUP_ADD + 1;
110
111    private static final int MENU_ADD = Menu.FIRST + 1;
112    private static final int MENU_WALLPAPER_SETTINGS = MENU_ADD + 1;
113    private static final int MENU_SEARCH = MENU_WALLPAPER_SETTINGS + 1;
114    private static final int MENU_NOTIFICATIONS = MENU_SEARCH + 1;
115    private static final int MENU_SETTINGS = MENU_NOTIFICATIONS + 1;
116
117    private static final int REQUEST_CREATE_SHORTCUT = 1;
118    private static final int REQUEST_CREATE_LIVE_FOLDER = 4;
119    private static final int REQUEST_CREATE_APPWIDGET = 5;
120    private static final int REQUEST_PICK_APPLICATION = 6;
121    private static final int REQUEST_PICK_SHORTCUT = 7;
122    private static final int REQUEST_PICK_LIVE_FOLDER = 8;
123    private static final int REQUEST_PICK_APPWIDGET = 9;
124    private static final int REQUEST_PICK_WALLPAPER = 10;
125
126    static final String EXTRA_SHORTCUT_DUPLICATE = "duplicate";
127
128    static final int SCREEN_COUNT = 5;
129    static final int DEFAULT_SCREEN = 2;
130    static final int NUMBER_CELLS_X = 4;
131    static final int NUMBER_CELLS_Y = 4;
132
133    static final int DIALOG_CREATE_SHORTCUT = 1;
134    static final int DIALOG_RENAME_FOLDER = 2;
135
136    private static final String PREFERENCES = "launcher.preferences";
137
138    // Type: int
139    private static final String RUNTIME_STATE_CURRENT_SCREEN = "launcher.current_screen";
140    // Type: boolean
141    private static final String RUNTIME_STATE_ALL_APPS_FOLDER = "launcher.all_apps_folder";
142    // Type: long
143    private static final String RUNTIME_STATE_USER_FOLDERS = "launcher.user_folder";
144    // Type: int
145    private static final String RUNTIME_STATE_PENDING_ADD_SCREEN = "launcher.add_screen";
146    // Type: int
147    private static final String RUNTIME_STATE_PENDING_ADD_CELL_X = "launcher.add_cellX";
148    // Type: int
149    private static final String RUNTIME_STATE_PENDING_ADD_CELL_Y = "launcher.add_cellY";
150    // Type: int
151    private static final String RUNTIME_STATE_PENDING_ADD_SPAN_X = "launcher.add_spanX";
152    // Type: int
153    private static final String RUNTIME_STATE_PENDING_ADD_SPAN_Y = "launcher.add_spanY";
154    // Type: int
155    private static final String RUNTIME_STATE_PENDING_ADD_COUNT_X = "launcher.add_countX";
156    // Type: int
157    private static final String RUNTIME_STATE_PENDING_ADD_COUNT_Y = "launcher.add_countY";
158    // Type: int[]
159    private static final String RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS = "launcher.add_occupied_cells";
160    // Type: boolean
161    private static final String RUNTIME_STATE_PENDING_FOLDER_RENAME = "launcher.rename_folder";
162    // Type: long
163    private static final String RUNTIME_STATE_PENDING_FOLDER_RENAME_ID = "launcher.rename_folder_id";
164
165    static final int APPWIDGET_HOST_ID = 1024;
166
167    private static final Object sLock = new Object();
168    private static int sScreen = DEFAULT_SCREEN;
169
170    private final BroadcastReceiver mCloseSystemDialogsReceiver
171            = new CloseSystemDialogsIntentReceiver();
172    private final ContentObserver mWidgetObserver = new AppWidgetResetObserver();
173
174    private LayoutInflater mInflater;
175
176    private DragController mDragController;
177    private Workspace mWorkspace;
178
179    private AppWidgetManager mAppWidgetManager;
180    private LauncherAppWidgetHost mAppWidgetHost;
181
182    private CellLayout.CellInfo mAddItemCellInfo;
183    private CellLayout.CellInfo mMenuAddInfo;
184    private final int[] mCellCoordinates = new int[2];
185    private FolderInfo mFolderInfo;
186
187    private DeleteZone mDeleteZone;
188    private HandleView mHandleView;
189    private AllAppsView mAllAppsGrid;
190    private TabHost mHomeCustomizationDrawer;
191
192    private Bundle mSavedState;
193
194    private SpannableStringBuilder mDefaultKeySsb = null;
195
196    private boolean mWorkspaceLoading = true;
197
198    private boolean mPaused = true;
199    private boolean mRestoring;
200    private boolean mWaitingForResult;
201
202    private Bundle mSavedInstanceState;
203
204    private LauncherModel mModel;
205    private IconCache mIconCache;
206
207    private ArrayList<ItemInfo> mDesktopItems = new ArrayList<ItemInfo>();
208    private static HashMap<Long, FolderInfo> mFolders = new HashMap<Long, FolderInfo>();
209
210    private ImageView mPreviousView;
211    private ImageView mNextView;
212
213    // Hotseats (quick-launch icons next to AllApps)
214    private static final int NUM_HOTSEATS = 2;
215    private String[] mHotseatConfig = null;
216    private Intent[] mHotseats = null;
217    private Drawable[] mHotseatIcons = null;
218    private CharSequence[] mHotseatLabels = null;
219
220
221    @Override
222    protected void onCreate(Bundle savedInstanceState) {
223        super.onCreate(savedInstanceState);
224
225        if (LauncherApplication.isInPlaceRotationEnabled()) {
226            // hide the status bar (temporary until we get the status bar design figured out)
227            getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
228            this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);
229        }
230
231        LauncherApplication app = ((LauncherApplication)getApplication());
232        mModel = app.setLauncher(this);
233        mIconCache = app.getIconCache();
234        mDragController = new DragController(this);
235        mInflater = getLayoutInflater();
236
237        mAppWidgetManager = AppWidgetManager.getInstance(this);
238        mAppWidgetHost = new LauncherAppWidgetHost(this, APPWIDGET_HOST_ID);
239        mAppWidgetHost.startListening();
240
241        if (PROFILE_STARTUP) {
242            android.os.Debug.startMethodTracing("/sdcard/launcher");
243        }
244
245        loadHotseats();
246        checkForLocaleChange();
247        setWallpaperDimension();
248        setContentView(R.layout.launcher);
249        mHomeCustomizationDrawer = (TabHost) findViewById(com.android.internal.R.id.tabhost);
250        if (mHomeCustomizationDrawer != null) {
251            mHomeCustomizationDrawer.setup();
252
253            String widgetsLabel = getString(R.string.widgets_tab_label);
254            mHomeCustomizationDrawer.addTab(mHomeCustomizationDrawer.newTabSpec("widgets")
255                    .setIndicator(widgetsLabel).setContent(R.id.widget_chooser));
256            String foldersLabel = getString(R.string.folders_tab_label);
257            mHomeCustomizationDrawer.addTab(mHomeCustomizationDrawer.newTabSpec("folders")
258                    .setIndicator(foldersLabel).setContent(R.id.folder_chooser));
259            String shortcutsLabel = getString(R.string.shortcuts_tab_label);
260            mHomeCustomizationDrawer.addTab(mHomeCustomizationDrawer.newTabSpec("shortcuts")
261                    .setIndicator(shortcutsLabel).setContent(R.id.shortcut_chooser));
262            String wallpapersLabel = getString(R.string.wallpapers_tab_label);
263            mHomeCustomizationDrawer.addTab(mHomeCustomizationDrawer.newTabSpec("wallpapers")
264                    .setIndicator(wallpapersLabel).setContent(R.id.wallpaperstab));
265
266            mHomeCustomizationDrawer.setCurrentTab(0);
267        }
268        setupViews();
269
270        registerContentObservers();
271
272        lockAllApps();
273
274        mSavedState = savedInstanceState;
275        restoreState(mSavedState);
276
277        if (PROFILE_STARTUP) {
278            android.os.Debug.stopMethodTracing();
279        }
280
281        if (!mRestoring) {
282            mModel.startLoader(this, true);
283        }
284
285        // For handling default keys
286        mDefaultKeySsb = new SpannableStringBuilder();
287        Selection.setSelection(mDefaultKeySsb, 0);
288
289        IntentFilter filter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
290        registerReceiver(mCloseSystemDialogsReceiver, filter);
291    }
292
293    @Override
294    public void onConfigurationChanged(Configuration newConfig) {
295        // TODO Auto-generated method stub
296        super.onConfigurationChanged(newConfig);
297
298        if (LauncherApplication.isInPlaceRotationEnabled()) {
299            mModel.updateOrientation();
300            mWorkspace.refreshWorkspaceChildren();
301            mWorkspace.rotateCurrentScreensChildren();
302        }
303    }
304
305
306    private void checkForLocaleChange() {
307        final LocaleConfiguration localeConfiguration = new LocaleConfiguration();
308        readConfiguration(this, localeConfiguration);
309
310        final Configuration configuration = getResources().getConfiguration();
311
312        final String previousLocale = localeConfiguration.locale;
313        final String locale = configuration.locale.toString();
314
315        final int previousMcc = localeConfiguration.mcc;
316        final int mcc = configuration.mcc;
317
318        final int previousMnc = localeConfiguration.mnc;
319        final int mnc = configuration.mnc;
320
321        boolean localeChanged = !locale.equals(previousLocale) || mcc != previousMcc || mnc != previousMnc;
322
323        if (localeChanged) {
324            localeConfiguration.locale = locale;
325            localeConfiguration.mcc = mcc;
326            localeConfiguration.mnc = mnc;
327
328            writeConfiguration(this, localeConfiguration);
329            mIconCache.flush();
330
331            loadHotseats();
332        }
333    }
334
335    private static class LocaleConfiguration {
336        public String locale;
337        public int mcc = -1;
338        public int mnc = -1;
339    }
340
341    private static void readConfiguration(Context context, LocaleConfiguration configuration) {
342        DataInputStream in = null;
343        try {
344            in = new DataInputStream(context.openFileInput(PREFERENCES));
345            configuration.locale = in.readUTF();
346            configuration.mcc = in.readInt();
347            configuration.mnc = in.readInt();
348        } catch (FileNotFoundException e) {
349            // Ignore
350        } catch (IOException e) {
351            // Ignore
352        } finally {
353            if (in != null) {
354                try {
355                    in.close();
356                } catch (IOException e) {
357                    // Ignore
358                }
359            }
360        }
361    }
362
363    private static void writeConfiguration(Context context, LocaleConfiguration configuration) {
364        DataOutputStream out = null;
365        try {
366            out = new DataOutputStream(context.openFileOutput(PREFERENCES, MODE_PRIVATE));
367            out.writeUTF(configuration.locale);
368            out.writeInt(configuration.mcc);
369            out.writeInt(configuration.mnc);
370            out.flush();
371        } catch (FileNotFoundException e) {
372            // Ignore
373        } catch (IOException e) {
374            //noinspection ResultOfMethodCallIgnored
375            context.getFileStreamPath(PREFERENCES).delete();
376        } finally {
377            if (out != null) {
378                try {
379                    out.close();
380                } catch (IOException e) {
381                    // Ignore
382                }
383            }
384        }
385    }
386
387    static int getScreen() {
388        synchronized (sLock) {
389            return sScreen;
390        }
391    }
392
393    static void setScreen(int screen) {
394        synchronized (sLock) {
395            sScreen = screen;
396        }
397    }
398
399    private void setWallpaperDimension() {
400        WallpaperManager wpm = (WallpaperManager)getSystemService(WALLPAPER_SERVICE);
401
402        Display display = getWindowManager().getDefaultDisplay();
403        boolean isPortrait = display.getWidth() < display.getHeight();
404
405        final int width = isPortrait ? display.getWidth() : display.getHeight();
406        final int height = isPortrait ? display.getHeight() : display.getWidth();
407        wpm.suggestDesiredDimensions(width * WALLPAPER_SCREENS_SPAN, height);
408    }
409
410    // Note: This doesn't do all the client-id magic that BrowserProvider does
411    // in Browser. (http://b/2425179)
412    private Uri getDefaultBrowserUri() {
413        String url = getString(R.string.default_browser_url);
414        if (url.indexOf("{CID}") != -1) {
415            url = url.replace("{CID}", "android-google");
416        }
417        return Uri.parse(url);
418    }
419
420    // Load the Intent templates from arrays.xml to populate the hotseats. For
421    // each Intent, if it resolves to a single app, use that as the launch
422    // intent & use that app's label as the contentDescription. Otherwise,
423    // retain the ResolveActivity so the user can pick an app.
424    private void loadHotseats() {
425        if (mHotseatConfig == null) {
426            mHotseatConfig = getResources().getStringArray(R.array.hotseats);
427            if (mHotseatConfig.length > 0) {
428                mHotseats = new Intent[mHotseatConfig.length];
429                mHotseatLabels = new CharSequence[mHotseatConfig.length];
430                mHotseatIcons = new Drawable[mHotseatConfig.length];
431            } else {
432                mHotseats = null;
433                mHotseatIcons = null;
434                mHotseatLabels = null;
435            }
436
437            TypedArray hotseatIconDrawables = getResources().obtainTypedArray(R.array.hotseat_icons);
438            for (int i=0; i<mHotseatConfig.length; i++) {
439                // load icon for this slot; currently unrelated to the actual activity
440                try {
441                    mHotseatIcons[i] = hotseatIconDrawables.getDrawable(i);
442                } catch (ArrayIndexOutOfBoundsException ex) {
443                    Log.w(TAG, "Missing hotseat_icons array item #" + i);
444                    mHotseatIcons[i] = null;
445                }
446            }
447            hotseatIconDrawables.recycle();
448        }
449
450        PackageManager pm = getPackageManager();
451        for (int i=0; i<mHotseatConfig.length; i++) {
452            Intent intent = null;
453            if (mHotseatConfig[i].equals("*BROWSER*")) {
454                // magic value meaning "launch user's default web browser"
455                // replace it with a generic web request so we can see if there is indeed a default
456                String defaultUri = getString(R.string.default_browser_url);
457                intent = new Intent(
458                        Intent.ACTION_VIEW,
459                        ((defaultUri != null)
460                            ? Uri.parse(defaultUri)
461                            : getDefaultBrowserUri())
462                    ).addCategory(Intent.CATEGORY_BROWSABLE);
463                // note: if the user launches this without a default set, she
464                // will always be taken to the default URL above; this is
465                // unavoidable as we must specify a valid URL in order for the
466                // chooser to appear, and once the user selects something, that
467                // URL is unavoidably sent to the chosen app.
468            } else {
469                try {
470                    intent = Intent.parseUri(mHotseatConfig[i], 0);
471                } catch (java.net.URISyntaxException ex) {
472                    Log.w(TAG, "Invalid hotseat intent: " + mHotseatConfig[i]);
473                    // bogus; leave intent=null
474                }
475            }
476
477            if (intent == null) {
478                mHotseats[i] = null;
479                mHotseatLabels[i] = getText(R.string.activity_not_found);
480                continue;
481            }
482
483            if (LOGD) {
484                Log.d(TAG, "loadHotseats: hotseat " + i
485                    + " initial intent=["
486                    + intent.toUri(Intent.URI_INTENT_SCHEME)
487                    + "]");
488            }
489
490            ResolveInfo bestMatch = pm.resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY);
491            List<ResolveInfo> allMatches = pm.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
492            if (LOGD) {
493                Log.d(TAG, "Best match for intent: " + bestMatch);
494                Log.d(TAG, "All matches: ");
495                for (ResolveInfo ri : allMatches) {
496                    Log.d(TAG, "  --> " + ri);
497                }
498            }
499            // did this resolve to a single app, or the resolver?
500            if (allMatches.size() == 0 || bestMatch == null) {
501                // can't find any activity to handle this. let's leave the
502                // intent as-is and let Launcher show a toast when it fails
503                // to launch.
504                mHotseats[i] = intent;
505
506                // set accessibility text to "Not installed"
507                mHotseatLabels[i] = getText(R.string.activity_not_found);
508            } else {
509                boolean found = false;
510                for (ResolveInfo ri : allMatches) {
511                    if (bestMatch.activityInfo.name.equals(ri.activityInfo.name)
512                        && bestMatch.activityInfo.applicationInfo.packageName
513                            .equals(ri.activityInfo.applicationInfo.packageName)) {
514                        found = true;
515                        break;
516                    }
517                }
518
519                if (!found) {
520                    if (LOGD) Log.d(TAG, "Multiple options, no default yet");
521                    // the bestMatch is probably the ResolveActivity, meaning the
522                    // user has not yet selected a default
523                    // so: we'll keep the original intent for now
524                    mHotseats[i] = intent;
525
526                    // set the accessibility text to "Select shortcut"
527                    mHotseatLabels[i] = getText(R.string.title_select_shortcut);
528                } else {
529                    // we have an app!
530                    // now reconstruct the intent to launch it through the front
531                    // door
532                    ComponentName com = new ComponentName(
533                        bestMatch.activityInfo.applicationInfo.packageName,
534                        bestMatch.activityInfo.name);
535                    mHotseats[i] = new Intent(Intent.ACTION_MAIN).setComponent(com);
536
537                    // load the app label for accessibility
538                    mHotseatLabels[i] = bestMatch.activityInfo.loadLabel(pm);
539                }
540            }
541
542            if (LOGD) {
543                Log.d(TAG, "loadHotseats: hotseat " + i
544                    + " final intent=["
545                    + ((mHotseats[i] == null)
546                        ? "null"
547                        : mHotseats[i].toUri(Intent.URI_INTENT_SCHEME))
548                    + "] label=[" + mHotseatLabels[i]
549                    + "]"
550                    );
551            }
552        }
553    }
554
555    @Override
556    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
557        mWaitingForResult = false;
558
559        // The pattern used here is that a user PICKs a specific application,
560        // which, depending on the target, might need to CREATE the actual target.
561
562        // For example, the user would PICK_SHORTCUT for "Music playlist", and we
563        // launch over to the Music app to actually CREATE_SHORTCUT.
564
565        if (resultCode == RESULT_OK && mAddItemCellInfo != null) {
566            switch (requestCode) {
567                case REQUEST_PICK_APPLICATION:
568                    completeAddApplication(this, data, mAddItemCellInfo);
569                    break;
570                case REQUEST_PICK_SHORTCUT:
571                    processShortcut(data);
572                    break;
573                case REQUEST_CREATE_SHORTCUT:
574                    completeAddShortcut(data, mAddItemCellInfo);
575                    break;
576                case REQUEST_PICK_LIVE_FOLDER:
577                    addLiveFolder(data);
578                    break;
579                case REQUEST_CREATE_LIVE_FOLDER:
580                    completeAddLiveFolder(data, mAddItemCellInfo);
581                    break;
582                case REQUEST_PICK_APPWIDGET:
583                    addAppWidgetFromPick(data);
584                    break;
585                case REQUEST_CREATE_APPWIDGET:
586                    int appWidgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
587                    completeAddAppWidget(appWidgetId, mAddItemCellInfo);
588                    break;
589                case REQUEST_PICK_WALLPAPER:
590                    // We just wanted the activity result here so we can clear mWaitingForResult
591                    break;
592            }
593        } else if ((requestCode == REQUEST_PICK_APPWIDGET ||
594                requestCode == REQUEST_CREATE_APPWIDGET) && resultCode == RESULT_CANCELED &&
595                data != null) {
596            // Clean up the appWidgetId if we canceled
597            int appWidgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
598            if (appWidgetId != -1) {
599                mAppWidgetHost.deleteAppWidgetId(appWidgetId);
600            }
601        }
602    }
603
604    @Override
605    protected void onResume() {
606        super.onResume();
607
608        mPaused = false;
609
610        if (mRestoring) {
611            mWorkspaceLoading = true;
612            mModel.startLoader(this, true);
613            mRestoring = false;
614        }
615    }
616
617    @Override
618    protected void onPause() {
619        super.onPause();
620        // Some launcher layouts don't have a previous and next view
621        if (mPreviousView != null) {
622            dismissPreview(mPreviousView);
623            dismissPreview(mNextView);
624        }
625        mDragController.cancelDrag();
626    }
627
628    @Override
629    public Object onRetainNonConfigurationInstance() {
630        // Flag the loader to stop early before switching
631        mModel.stopLoader();
632        mAllAppsGrid.surrender();
633        return Boolean.TRUE;
634    }
635
636    // We can't hide the IME if it was forced open.  So don't bother
637    /*
638    @Override
639    public void onWindowFocusChanged(boolean hasFocus) {
640        super.onWindowFocusChanged(hasFocus);
641
642        if (hasFocus) {
643            final InputMethodManager inputManager = (InputMethodManager)
644                    getSystemService(Context.INPUT_METHOD_SERVICE);
645            WindowManager.LayoutParams lp = getWindow().getAttributes();
646            inputManager.hideSoftInputFromWindow(lp.token, 0, new android.os.ResultReceiver(new
647                        android.os.Handler()) {
648                        protected void onReceiveResult(int resultCode, Bundle resultData) {
649                            Log.d(TAG, "ResultReceiver got resultCode=" + resultCode);
650                        }
651                    });
652            Log.d(TAG, "called hideSoftInputFromWindow from onWindowFocusChanged");
653        }
654    }
655    */
656
657    private boolean acceptFilter() {
658        final InputMethodManager inputManager = (InputMethodManager)
659                getSystemService(Context.INPUT_METHOD_SERVICE);
660        return !inputManager.isFullscreenMode();
661    }
662
663    @Override
664    public boolean onKeyDown(int keyCode, KeyEvent event) {
665        boolean handled = super.onKeyDown(keyCode, event);
666        if (!handled && acceptFilter() && keyCode != KeyEvent.KEYCODE_ENTER) {
667            boolean gotKey = TextKeyListener.getInstance().onKeyDown(mWorkspace, mDefaultKeySsb,
668                    keyCode, event);
669            if (gotKey && mDefaultKeySsb != null && mDefaultKeySsb.length() > 0) {
670                // something usable has been typed - start a search
671                // the typed text will be retrieved and cleared by
672                // showSearchDialog()
673                // If there are multiple keystrokes before the search dialog takes focus,
674                // onSearchRequested() will be called for every keystroke,
675                // but it is idempotent, so it's fine.
676                return onSearchRequested();
677            }
678        }
679
680        // Eat the long press event so the keyboard doesn't come up.
681        if (keyCode == KeyEvent.KEYCODE_MENU && event.isLongPress()) {
682            return true;
683        }
684
685        return handled;
686    }
687
688    private String getTypedText() {
689        return mDefaultKeySsb.toString();
690    }
691
692    private void clearTypedText() {
693        mDefaultKeySsb.clear();
694        mDefaultKeySsb.clearSpans();
695        Selection.setSelection(mDefaultKeySsb, 0);
696    }
697
698    /**
699     * Restores the previous state, if it exists.
700     *
701     * @param savedState The previous state.
702     */
703    private void restoreState(Bundle savedState) {
704        if (savedState == null) {
705            return;
706        }
707
708        final boolean allApps = savedState.getBoolean(RUNTIME_STATE_ALL_APPS_FOLDER, false);
709        if (allApps) {
710            showAllApps(false);
711        }
712
713        final int currentScreen = savedState.getInt(RUNTIME_STATE_CURRENT_SCREEN, -1);
714        if (currentScreen > -1) {
715            mWorkspace.setCurrentScreen(currentScreen);
716        }
717
718        final int addScreen = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SCREEN, -1);
719        if (addScreen > -1) {
720            mAddItemCellInfo = new CellLayout.CellInfo();
721            final CellLayout.CellInfo addItemCellInfo = mAddItemCellInfo;
722            addItemCellInfo.valid = true;
723            addItemCellInfo.screen = addScreen;
724            addItemCellInfo.cellX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_X);
725            addItemCellInfo.cellY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_Y);
726            addItemCellInfo.spanX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_X);
727            addItemCellInfo.spanY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y);
728            addItemCellInfo.findVacantCellsFromOccupied(
729                    savedState.getBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS),
730                    savedState.getInt(RUNTIME_STATE_PENDING_ADD_COUNT_X),
731                    savedState.getInt(RUNTIME_STATE_PENDING_ADD_COUNT_Y));
732            mRestoring = true;
733        }
734
735        boolean renameFolder = savedState.getBoolean(RUNTIME_STATE_PENDING_FOLDER_RENAME, false);
736        if (renameFolder) {
737            long id = savedState.getLong(RUNTIME_STATE_PENDING_FOLDER_RENAME_ID);
738            mFolderInfo = mModel.getFolderById(this, mFolders, id);
739            mRestoring = true;
740        }
741    }
742
743    /**
744     * Finds all the views we need and configure them properly.
745     */
746    private void setupViews() {
747        DragController dragController = mDragController;
748
749        DragLayer dragLayer = (DragLayer) findViewById(R.id.drag_layer);
750        dragLayer.setDragController(dragController);
751
752        mAllAppsGrid = (AllAppsView)dragLayer.findViewById(R.id.all_apps_view);
753        mAllAppsGrid.setLauncher(this);
754        mAllAppsGrid.setDragController(dragController);
755        ((View) mAllAppsGrid).setWillNotDraw(false); // We don't want a hole punched in our window.
756        // Manage focusability manually since this thing is always visible
757        ((View) mAllAppsGrid).setFocusable(false);
758
759        mWorkspace = (Workspace) dragLayer.findViewById(R.id.workspace);
760        final Workspace workspace = mWorkspace;
761        workspace.setHapticFeedbackEnabled(false);
762
763        // We only intercept touch events to dismiss the home customization drawer; if it doesn't
764        //  exist, then no need to do this
765        if (mHomeCustomizationDrawer != null)
766            workspace.setOnInterceptTouchListener(this);
767
768        DeleteZone deleteZone = (DeleteZone) dragLayer.findViewById(R.id.delete_zone);
769        mDeleteZone = deleteZone;
770
771        mHandleView = (HandleView) findViewById(R.id.all_apps_button);
772        mHandleView.setLauncher(this);
773        mHandleView.setOnClickListener(this);
774        mHandleView.setOnLongClickListener(this);
775
776        WidgetChooser widgetChooser = (WidgetChooser) findViewById(R.id.widget_chooser);
777        if (widgetChooser != null) {
778            WidgetListAdapter widgetGalleryAdapter = new WidgetListAdapter(this);
779            widgetChooser.setAdapter(widgetGalleryAdapter);
780            widgetChooser.setDragController(dragController);
781            widgetChooser.setLauncher(this);
782
783            FolderChooser folderChooser = (FolderChooser) findViewById(R.id.folder_chooser);
784            IntentListAdapter folderTypes = new FolderListAdapter(this, LiveFolders.ACTION_CREATE_LIVE_FOLDER);
785            folderChooser.setAdapter(folderTypes);
786            folderChooser.setLauncher(this);
787
788            ShortcutChooser shortcutChooser = (ShortcutChooser) findViewById(R.id.shortcut_chooser);
789            IntentListAdapter shortcutTypes = new ShortcutListAdapter(this, Intent.ACTION_CREATE_SHORTCUT);
790            shortcutChooser.setAdapter(shortcutTypes);
791            shortcutChooser.setLauncher(this);
792        } else {
793             ImageView hotseatLeft = (ImageView) findViewById(R.id.hotseat_left);
794             hotseatLeft.setContentDescription(mHotseatLabels[0]);
795             hotseatLeft.setImageDrawable(mHotseatIcons[0]);
796             ImageView hotseatRight = (ImageView) findViewById(R.id.hotseat_right);
797             hotseatRight.setContentDescription(mHotseatLabels[1]);
798             hotseatRight.setImageDrawable(mHotseatIcons[1]);
799
800             mPreviousView = (ImageView) dragLayer.findViewById(R.id.previous_screen);
801             mNextView = (ImageView) dragLayer.findViewById(R.id.next_screen);
802
803             Drawable previous = mPreviousView.getDrawable();
804             Drawable next = mNextView.getDrawable();
805             mWorkspace.setIndicators(previous, next);
806
807             mPreviousView.setHapticFeedbackEnabled(false);
808             mPreviousView.setOnLongClickListener(this);
809             mNextView.setHapticFeedbackEnabled(false);
810             mNextView.setOnLongClickListener(this);
811        }
812
813        workspace.setOnLongClickListener(this);
814        workspace.setDragController(dragController);
815        workspace.setLauncher(this);
816
817        deleteZone.setLauncher(this);
818        deleteZone.setDragController(dragController);
819        int deleteZoneHandleId = LauncherApplication.isScreenXLarge() ? R.id.add_button : R.id.all_apps_button_cluster;
820        deleteZone.setHandle(findViewById(deleteZoneHandleId));
821
822        dragController.setDragScoller(workspace);
823        dragController.setDragListener(deleteZone);
824        dragController.setScrollView(dragLayer);
825        dragController.setMoveTarget(workspace);
826
827        // The order here is bottom to top.
828        dragController.addDropTarget(workspace);
829        dragController.addDropTarget(deleteZone);
830    }
831
832    @SuppressWarnings({"UnusedDeclaration"})
833    public void previousScreen(View v) {
834        if (!isAllAppsVisible()) {
835            mWorkspace.scrollLeft();
836        }
837    }
838
839    @SuppressWarnings({"UnusedDeclaration"})
840    public void nextScreen(View v) {
841        if (!isAllAppsVisible()) {
842            mWorkspace.scrollRight();
843        }
844    }
845
846    @SuppressWarnings({"UnusedDeclaration"})
847    public void launchHotSeat(View v) {
848        if (isAllAppsVisible()) return;
849
850        int index = -1;
851        if (v.getId() == R.id.hotseat_left) {
852            index = 0;
853        } else if (v.getId() == R.id.hotseat_right) {
854            index = 1;
855        }
856
857        // reload these every tap; you never know when they might change
858        loadHotseats();
859        if (index >= 0 && index < mHotseats.length && mHotseats[index] != null) {
860            Intent intent = mHotseats[index];
861            startActivitySafely(
862                mHotseats[index],
863                "hotseat"
864            );
865        }
866    }
867
868    /**
869     * Creates a view representing a shortcut.
870     *
871     * @param info The data structure describing the shortcut.
872     *
873     * @return A View inflated from R.layout.application.
874     */
875    View createShortcut(ShortcutInfo info) {
876        return createShortcut(R.layout.application,
877                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), info);
878    }
879
880    /**
881     * Creates a view representing a shortcut inflated from the specified resource.
882     *
883     * @param layoutResId The id of the XML layout used to create the shortcut.
884     * @param parent The group the shortcut belongs to.
885     * @param info The data structure describing the shortcut.
886     *
887     * @return A View inflated from layoutResId.
888     */
889    View createShortcut(int layoutResId, ViewGroup parent, ShortcutInfo info) {
890        TextView favorite = (TextView) mInflater.inflate(layoutResId, parent, false);
891
892        favorite.setCompoundDrawablesWithIntrinsicBounds(null,
893                new FastBitmapDrawable(info.getIcon(mIconCache)),
894                null, null);
895        favorite.setText(info.title);
896        favorite.setTag(info);
897        favorite.setOnClickListener(this);
898
899        return favorite;
900    }
901
902    /**
903     * Add an application shortcut to the workspace.
904     *
905     * @param data The intent describing the application.
906     * @param cellInfo The position on screen where to create the shortcut.
907     */
908    void completeAddApplication(Context context, Intent data, CellLayout.CellInfo cellInfo) {
909        cellInfo.screen = mWorkspace.getCurrentScreen();
910        if (!findSingleSlot(cellInfo)) return;
911
912        final ShortcutInfo info = mModel.getShortcutInfo(context.getPackageManager(),
913                data, context);
914
915        if (info != null) {
916            info.setActivity(data.getComponent(), Intent.FLAG_ACTIVITY_NEW_TASK |
917                    Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
918            info.container = ItemInfo.NO_ID;
919            mWorkspace.addApplicationShortcut(info, cellInfo, isWorkspaceLocked());
920        } else {
921            Log.e(TAG, "Couldn't find ActivityInfo for selected application: " + data);
922        }
923    }
924
925    /**
926     * Add a shortcut to the workspace.
927     *
928     * @param data The intent describing the shortcut.
929     * @param cellInfo The position on screen where to create the shortcut.
930     */
931    private void completeAddShortcut(Intent data, CellLayout.CellInfo cellInfo) {
932        cellInfo.screen = mWorkspace.getCurrentScreen();
933        if (!findSingleSlot(cellInfo)) return;
934
935        final ShortcutInfo info = mModel.addShortcut(this, data, cellInfo, false);
936
937        if (!mRestoring) {
938            final View view = createShortcut(info);
939            mWorkspace.addInCurrentScreen(view, cellInfo.cellX, cellInfo.cellY, 1, 1,
940                    isWorkspaceLocked());
941        }
942    }
943
944
945    /**
946     * Add a widget to the workspace.
947     *
948     * @param data The intent describing the appWidgetId.
949     * @param cellInfo The position on screen where to create the widget.
950     */
951    private void completeAddAppWidget(int appWidgetId, CellLayout.CellInfo cellInfo) {
952        AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
953
954        // Calculate the grid spans needed to fit this widget
955        CellLayout layout = (CellLayout) mWorkspace.getChildAt(cellInfo.screen);
956        int[] spans = layout.rectToCell(appWidgetInfo.minWidth, appWidgetInfo.minHeight);
957
958        // Try finding open space on Launcher screen
959        final int[] xy = mCellCoordinates;
960        if (!findSlot(cellInfo, xy, spans[0], spans[1])) {
961            if (appWidgetId != -1) mAppWidgetHost.deleteAppWidgetId(appWidgetId);
962            return;
963        }
964
965        // Build Launcher-specific widget info and save to database
966        LauncherAppWidgetInfo launcherInfo = new LauncherAppWidgetInfo(appWidgetId);
967        launcherInfo.spanX = spans[0];
968        launcherInfo.spanY = spans[1];
969
970        LauncherModel.addItemToDatabase(this, launcherInfo,
971                LauncherSettings.Favorites.CONTAINER_DESKTOP,
972                mWorkspace.getCurrentScreen(), xy[0], xy[1], false);
973
974        if (!mRestoring) {
975            mDesktopItems.add(launcherInfo);
976
977            // Perform actual inflation because we're live
978            launcherInfo.hostView = mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
979
980            launcherInfo.hostView.setAppWidget(appWidgetId, appWidgetInfo);
981            launcherInfo.hostView.setTag(launcherInfo);
982
983            mWorkspace.addInCurrentScreen(launcherInfo.hostView, xy[0], xy[1],
984                    launcherInfo.spanX, launcherInfo.spanY, isWorkspaceLocked());
985        }
986    }
987
988    public void removeAppWidget(LauncherAppWidgetInfo launcherInfo) {
989        mDesktopItems.remove(launcherInfo);
990        launcherInfo.hostView = null;
991    }
992
993    public LauncherAppWidgetHost getAppWidgetHost() {
994        return mAppWidgetHost;
995    }
996
997    void closeSystemDialogs() {
998        getWindow().closeAllPanels();
999
1000        try {
1001            dismissDialog(DIALOG_CREATE_SHORTCUT);
1002            // Unlock the workspace if the dialog was showing
1003        } catch (Exception e) {
1004            // An exception is thrown if the dialog is not visible, which is fine
1005        }
1006
1007        try {
1008            dismissDialog(DIALOG_RENAME_FOLDER);
1009            // Unlock the workspace if the dialog was showing
1010        } catch (Exception e) {
1011            // An exception is thrown if the dialog is not visible, which is fine
1012        }
1013
1014        // Whatever we were doing is hereby canceled.
1015        mWaitingForResult = false;
1016    }
1017
1018    @Override
1019    protected void onNewIntent(Intent intent) {
1020        super.onNewIntent(intent);
1021
1022        // Close the menu
1023        if (Intent.ACTION_MAIN.equals(intent.getAction())) {
1024            // also will cancel mWaitingForResult.
1025            closeSystemDialogs();
1026
1027            boolean alreadyOnHome = ((intent.getFlags() & Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT)
1028                        != Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT);
1029            boolean allAppsVisible = isAllAppsVisible();
1030            if (!mWorkspace.isDefaultScreenShowing()) {
1031                mWorkspace.moveToDefaultScreen(alreadyOnHome && !allAppsVisible);
1032            }
1033            closeAllApps(alreadyOnHome && allAppsVisible);
1034
1035            final View v = getWindow().peekDecorView();
1036            if (v != null && v.getWindowToken() != null) {
1037                InputMethodManager imm = (InputMethodManager)getSystemService(
1038                        INPUT_METHOD_SERVICE);
1039                imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
1040            }
1041        }
1042    }
1043
1044    @Override
1045    protected void onRestoreInstanceState(Bundle savedInstanceState) {
1046        // Do not call super here
1047        mSavedInstanceState = savedInstanceState;
1048
1049        if (mHomeCustomizationDrawer != null) {
1050            String cur = savedInstanceState.getString("currentTab");
1051            if (cur != null) {
1052                mHomeCustomizationDrawer.setCurrentTabByTag(cur);
1053            }
1054        }
1055    }
1056
1057    @Override
1058    protected void onSaveInstanceState(Bundle outState) {
1059        outState.putInt(RUNTIME_STATE_CURRENT_SCREEN, mWorkspace.getCurrentScreen());
1060
1061        final ArrayList<Folder> folders = mWorkspace.getOpenFolders();
1062        if (folders.size() > 0) {
1063            final int count = folders.size();
1064            long[] ids = new long[count];
1065            for (int i = 0; i < count; i++) {
1066                final FolderInfo info = folders.get(i).getInfo();
1067                ids[i] = info.id;
1068            }
1069            outState.putLongArray(RUNTIME_STATE_USER_FOLDERS, ids);
1070        } else {
1071            super.onSaveInstanceState(outState);
1072        }
1073
1074        // TODO should not do this if the drawer is currently closing.
1075        if (isAllAppsVisible()) {
1076            outState.putBoolean(RUNTIME_STATE_ALL_APPS_FOLDER, true);
1077        }
1078
1079        if (mAddItemCellInfo != null && mAddItemCellInfo.valid && mWaitingForResult) {
1080            final CellLayout.CellInfo addItemCellInfo = mAddItemCellInfo;
1081            final CellLayout layout = (CellLayout) mWorkspace.getChildAt(addItemCellInfo.screen);
1082
1083            outState.putInt(RUNTIME_STATE_PENDING_ADD_SCREEN, addItemCellInfo.screen);
1084            outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_X, addItemCellInfo.cellX);
1085            outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_Y, addItemCellInfo.cellY);
1086            outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_X, addItemCellInfo.spanX);
1087            outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y, addItemCellInfo.spanY);
1088            outState.putInt(RUNTIME_STATE_PENDING_ADD_COUNT_X, layout.getCountX());
1089            outState.putInt(RUNTIME_STATE_PENDING_ADD_COUNT_Y, layout.getCountY());
1090            outState.putBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS,
1091                   layout.getOccupiedCellsFlattened());
1092        }
1093
1094        if (mFolderInfo != null && mWaitingForResult) {
1095            outState.putBoolean(RUNTIME_STATE_PENDING_FOLDER_RENAME, true);
1096            outState.putLong(RUNTIME_STATE_PENDING_FOLDER_RENAME_ID, mFolderInfo.id);
1097        }
1098
1099        if (mHomeCustomizationDrawer != null) {
1100            String currentTabTag = mHomeCustomizationDrawer.getCurrentTabTag();
1101            if (currentTabTag != null) {
1102                outState.putString("currentTab", currentTabTag);
1103            }
1104        }
1105    }
1106
1107    @Override
1108    public void onDestroy() {
1109        super.onDestroy();
1110
1111        try {
1112            mAppWidgetHost.stopListening();
1113        } catch (NullPointerException ex) {
1114            Log.w(TAG, "problem while stopping AppWidgetHost during Launcher destruction", ex);
1115        }
1116
1117        TextKeyListener.getInstance().release();
1118
1119        mModel.stopLoader();
1120
1121        unbindDesktopItems();
1122
1123        getContentResolver().unregisterContentObserver(mWidgetObserver);
1124
1125        dismissPreview(mPreviousView);
1126        dismissPreview(mNextView);
1127
1128        unregisterReceiver(mCloseSystemDialogsReceiver);
1129    }
1130
1131    @Override
1132    public void startActivityForResult(Intent intent, int requestCode) {
1133        if (requestCode >= 0) mWaitingForResult = true;
1134        super.startActivityForResult(intent, requestCode);
1135    }
1136
1137    @Override
1138    public void startSearch(String initialQuery, boolean selectInitialQuery,
1139            Bundle appSearchData, boolean globalSearch) {
1140
1141        closeAllApps(true);
1142
1143        if (initialQuery == null) {
1144            // Use any text typed in the launcher as the initial query
1145            initialQuery = getTypedText();
1146            clearTypedText();
1147        }
1148        if (appSearchData == null) {
1149            appSearchData = new Bundle();
1150            appSearchData.putString(Search.SOURCE, "launcher-search");
1151        }
1152
1153        final SearchManager searchManager =
1154                (SearchManager) getSystemService(Context.SEARCH_SERVICE);
1155        searchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(),
1156            appSearchData, globalSearch);
1157    }
1158
1159    @Override
1160    public boolean onCreateOptionsMenu(Menu menu) {
1161        if (isWorkspaceLocked()) {
1162            return false;
1163        }
1164
1165        super.onCreateOptionsMenu(menu);
1166
1167        menu.add(MENU_GROUP_ADD, MENU_ADD, 0, R.string.menu_add)
1168                .setIcon(android.R.drawable.ic_menu_add)
1169                .setAlphabeticShortcut('A');
1170        menu.add(MENU_GROUP_WALLPAPER, MENU_WALLPAPER_SETTINGS, 0, R.string.menu_wallpaper)
1171                 .setIcon(android.R.drawable.ic_menu_gallery)
1172                 .setAlphabeticShortcut('W');
1173        menu.add(0, MENU_SEARCH, 0, R.string.menu_search)
1174                .setIcon(android.R.drawable.ic_search_category_default)
1175                .setAlphabeticShortcut(SearchManager.MENU_KEY);
1176        menu.add(0, MENU_NOTIFICATIONS, 0, R.string.menu_notifications)
1177                .setIcon(com.android.internal.R.drawable.ic_menu_notifications)
1178                .setAlphabeticShortcut('N');
1179
1180        final Intent settings = new Intent(android.provider.Settings.ACTION_SETTINGS);
1181        settings.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
1182                Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
1183
1184        menu.add(0, MENU_SETTINGS, 0, R.string.menu_settings)
1185                .setIcon(android.R.drawable.ic_menu_preferences).setAlphabeticShortcut('P')
1186                .setIntent(settings);
1187
1188        return true;
1189    }
1190
1191    @Override
1192    public boolean onPrepareOptionsMenu(Menu menu) {
1193        super.onPrepareOptionsMenu(menu);
1194
1195        // If all apps is animating, don't show the menu, because we don't know
1196        // which one to show.
1197        if (mAllAppsGrid.isVisible() && !mAllAppsGrid.isOpaque()) {
1198            return false;
1199        }
1200
1201        // Only show the add and wallpaper options when we're not in all apps.
1202        boolean visible = !mAllAppsGrid.isOpaque();
1203        menu.setGroupVisible(MENU_GROUP_ADD, visible);
1204        menu.setGroupVisible(MENU_GROUP_WALLPAPER, visible);
1205
1206        // Disable add if the workspace is full.
1207        if (visible) {
1208            mMenuAddInfo = mWorkspace.findAllVacantCells(null);
1209            menu.setGroupEnabled(MENU_GROUP_ADD, mMenuAddInfo != null && mMenuAddInfo.valid);
1210        }
1211
1212        return true;
1213    }
1214
1215    // we need to initialize mAddItemCellInfo before adding something to the homescreen -- when
1216    // using the settings menu to add an item, something similar happens in showAddDialog
1217    public void prepareAddItemFromHomeCustomizationDrawer() {
1218        mMenuAddInfo = mWorkspace.findAllVacantCells(null);
1219        mAddItemCellInfo = mMenuAddInfo;
1220    }
1221
1222    @Override
1223    public boolean onOptionsItemSelected(MenuItem item) {
1224        switch (item.getItemId()) {
1225            case MENU_ADD:
1226                addItems();
1227                return true;
1228            case MENU_WALLPAPER_SETTINGS:
1229                startWallpaper();
1230                return true;
1231            case MENU_SEARCH:
1232                onSearchRequested();
1233                return true;
1234            case MENU_NOTIFICATIONS:
1235                showNotifications();
1236                return true;
1237        }
1238
1239        return super.onOptionsItemSelected(item);
1240    }
1241
1242    /**
1243     * Indicates that we want global search for this activity by setting the globalSearch
1244     * argument for {@link #startSearch} to true.
1245     */
1246
1247    @Override
1248    public boolean onSearchRequested() {
1249        startSearch(null, false, null, true);
1250        return true;
1251    }
1252
1253    public boolean isWorkspaceLocked() {
1254        return mWorkspaceLoading || mWaitingForResult;
1255    }
1256
1257    private void addItems() {
1258        closeAllApps(true);
1259        showAddDialog(mMenuAddInfo);
1260    }
1261
1262    void addAppWidgetFromDrop(ComponentName appWidgetProvider, CellLayout.CellInfo cellInfo) {
1263        mAddItemCellInfo = cellInfo;
1264        int appWidgetId = getAppWidgetHost().allocateAppWidgetId();
1265        AppWidgetManager.getInstance(this).bindAppWidgetId(appWidgetId, appWidgetProvider);
1266        addAppWidgetImpl(appWidgetId);
1267    }
1268
1269    void addAppWidgetFromPick(Intent data) {
1270        // TODO: catch bad widget exception when sent
1271        int appWidgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
1272        // TODO: Is this log message meaningful?
1273        if (LOGD) Log.d(TAG, "dumping extras content=" + data.getExtras());
1274        addAppWidgetImpl(appWidgetId);
1275    }
1276
1277    void addAppWidgetImpl(int appWidgetId) {
1278        AppWidgetProviderInfo appWidget = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
1279
1280        if (appWidget.configure != null) {
1281            // Launch over to configure widget, if needed
1282            Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_CONFIGURE);
1283            intent.setComponent(appWidget.configure);
1284            intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
1285
1286            startActivityForResultSafely(intent, REQUEST_CREATE_APPWIDGET);
1287        } else {
1288            // Otherwise just add it
1289            completeAddAppWidget(appWidgetId, mAddItemCellInfo);
1290        }
1291    }
1292
1293    void processShortcut(Intent intent) {
1294        // Handle case where user selected "Applications"
1295        String applicationName = getResources().getString(R.string.group_applications);
1296        String shortcutName = intent.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
1297
1298        if (applicationName != null && applicationName.equals(shortcutName)) {
1299            Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
1300            mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
1301
1302            Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1303            pickIntent.putExtra(Intent.EXTRA_INTENT, mainIntent);
1304            startActivityForResult(pickIntent, REQUEST_PICK_APPLICATION);
1305        } else {
1306            startActivityForResult(intent, REQUEST_CREATE_SHORTCUT);
1307        }
1308    }
1309
1310    void addLiveFolder(Intent intent) {
1311        // Handle case where user selected "Folder"
1312        String folderName = getResources().getString(R.string.group_folder);
1313        String shortcutName = intent.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
1314
1315        if (folderName != null && folderName.equals(shortcutName)) {
1316            addFolder();
1317        } else {
1318            startActivityForResult(intent, REQUEST_CREATE_LIVE_FOLDER);
1319        }
1320    }
1321
1322    void addFolder() {
1323        UserFolderInfo folderInfo = new UserFolderInfo();
1324        folderInfo.title = getText(R.string.folder_name);
1325
1326        CellLayout.CellInfo cellInfo = mAddItemCellInfo;
1327        cellInfo.screen = mWorkspace.getCurrentScreen();
1328        if (!findSingleSlot(cellInfo)) return;
1329
1330        // Update the model
1331        LauncherModel.addItemToDatabase(this, folderInfo,
1332                LauncherSettings.Favorites.CONTAINER_DESKTOP,
1333                mWorkspace.getCurrentScreen(), cellInfo.cellX, cellInfo.cellY, false);
1334        mFolders.put(folderInfo.id, folderInfo);
1335
1336        // Create the view
1337        FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon, this,
1338                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), folderInfo);
1339        mWorkspace.addInCurrentScreen(newFolder,
1340                cellInfo.cellX, cellInfo.cellY, 1, 1, isWorkspaceLocked());
1341    }
1342
1343    void removeFolder(FolderInfo folder) {
1344        mFolders.remove(folder.id);
1345    }
1346
1347    private void completeAddLiveFolder(Intent data, CellLayout.CellInfo cellInfo) {
1348        cellInfo.screen = mWorkspace.getCurrentScreen();
1349        if (!findSingleSlot(cellInfo)) return;
1350
1351        final LiveFolderInfo info = addLiveFolder(this, data, cellInfo, false);
1352
1353        if (!mRestoring) {
1354            final View view = LiveFolderIcon.fromXml(R.layout.live_folder_icon, this,
1355                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentScreen()), info);
1356            mWorkspace.addInCurrentScreen(view, cellInfo.cellX, cellInfo.cellY, 1, 1,
1357                    isWorkspaceLocked());
1358        }
1359    }
1360
1361    static LiveFolderInfo addLiveFolder(Context context, Intent data,
1362            CellLayout.CellInfo cellInfo, boolean notify) {
1363
1364        Intent baseIntent = data.getParcelableExtra(LiveFolders.EXTRA_LIVE_FOLDER_BASE_INTENT);
1365        String name = data.getStringExtra(LiveFolders.EXTRA_LIVE_FOLDER_NAME);
1366
1367        Drawable icon = null;
1368        Intent.ShortcutIconResource iconResource = null;
1369
1370        Parcelable extra = data.getParcelableExtra(LiveFolders.EXTRA_LIVE_FOLDER_ICON);
1371        if (extra != null && extra instanceof Intent.ShortcutIconResource) {
1372            try {
1373                iconResource = (Intent.ShortcutIconResource) extra;
1374                final PackageManager packageManager = context.getPackageManager();
1375                Resources resources = packageManager.getResourcesForApplication(
1376                        iconResource.packageName);
1377                final int id = resources.getIdentifier(iconResource.resourceName, null, null);
1378                icon = resources.getDrawable(id);
1379            } catch (Exception e) {
1380                Log.w(TAG, "Could not load live folder icon: " + extra);
1381            }
1382        }
1383
1384        if (icon == null) {
1385            icon = context.getResources().getDrawable(R.drawable.ic_launcher_folder);
1386        }
1387
1388        final LiveFolderInfo info = new LiveFolderInfo();
1389        info.icon = Utilities.createIconBitmap(icon, context);
1390        info.title = name;
1391        info.iconResource = iconResource;
1392        info.uri = data.getData();
1393        info.baseIntent = baseIntent;
1394        info.displayMode = data.getIntExtra(LiveFolders.EXTRA_LIVE_FOLDER_DISPLAY_MODE,
1395                LiveFolders.DISPLAY_MODE_GRID);
1396
1397        LauncherModel.addItemToDatabase(context, info, LauncherSettings.Favorites.CONTAINER_DESKTOP,
1398                cellInfo.screen, cellInfo.cellX, cellInfo.cellY, notify);
1399        mFolders.put(info.id, info);
1400
1401        return info;
1402    }
1403
1404    private boolean findSingleSlot(CellLayout.CellInfo cellInfo) {
1405        final int[] xy = new int[2];
1406        if (findSlot(cellInfo, xy, 1, 1)) {
1407            cellInfo.cellX = xy[0];
1408            cellInfo.cellY = xy[1];
1409            return true;
1410        }
1411        return false;
1412    }
1413
1414    private boolean findSlot(CellLayout.CellInfo cellInfo, int[] xy, int spanX, int spanY) {
1415        if (!cellInfo.findCellForSpan(xy, spanX, spanY)) {
1416            boolean[] occupied = mSavedState != null ?
1417                    mSavedState.getBooleanArray(RUNTIME_STATE_PENDING_ADD_OCCUPIED_CELLS) : null;
1418            cellInfo = mWorkspace.findAllVacantCells(occupied);
1419            if (!cellInfo.findCellForSpan(xy, spanX, spanY)) {
1420                Toast.makeText(this, getString(R.string.out_of_space), Toast.LENGTH_SHORT).show();
1421                return false;
1422            }
1423        }
1424        return true;
1425    }
1426
1427    private void showNotifications() {
1428        final StatusBarManager statusBar = (StatusBarManager) getSystemService(STATUS_BAR_SERVICE);
1429        if (statusBar != null) {
1430            statusBar.expand();
1431        }
1432    }
1433
1434    private void startWallpaper() {
1435        closeAllApps(true);
1436        final Intent pickWallpaper = new Intent(Intent.ACTION_SET_WALLPAPER);
1437        Intent chooser = Intent.createChooser(pickWallpaper,
1438                getText(R.string.chooser_wallpaper));
1439        // NOTE: Adds a configure option to the chooser if the wallpaper supports it
1440        //       Removed in Eclair MR1
1441//        WallpaperManager wm = (WallpaperManager)
1442//                getSystemService(Context.WALLPAPER_SERVICE);
1443//        WallpaperInfo wi = wm.getWallpaperInfo();
1444//        if (wi != null && wi.getSettingsActivity() != null) {
1445//            LabeledIntent li = new LabeledIntent(getPackageName(),
1446//                    R.string.configure_wallpaper, 0);
1447//            li.setClassName(wi.getPackageName(), wi.getSettingsActivity());
1448//            chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Intent[] { li });
1449//        }
1450        startActivityForResult(chooser, REQUEST_PICK_WALLPAPER);
1451    }
1452
1453    /**
1454     * Registers various content observers. The current implementation registers
1455     * only a favorites observer to keep track of the favorites applications.
1456     */
1457    private void registerContentObservers() {
1458        ContentResolver resolver = getContentResolver();
1459        resolver.registerContentObserver(LauncherProvider.CONTENT_APPWIDGET_RESET_URI,
1460                true, mWidgetObserver);
1461    }
1462
1463    @Override
1464    public boolean dispatchKeyEvent(KeyEvent event) {
1465        if (event.getAction() == KeyEvent.ACTION_DOWN) {
1466            switch (event.getKeyCode()) {
1467                case KeyEvent.KEYCODE_HOME:
1468                    return true;
1469                case KeyEvent.KEYCODE_VOLUME_DOWN:
1470                    if (SystemProperties.getInt("debug.launcher2.dumpstate", 0) != 0) {
1471                        dumpState();
1472                        return true;
1473                    }
1474                    break;
1475            }
1476        } else if (event.getAction() == KeyEvent.ACTION_UP) {
1477            switch (event.getKeyCode()) {
1478                case KeyEvent.KEYCODE_HOME:
1479                    return true;
1480            }
1481        }
1482
1483        return super.dispatchKeyEvent(event);
1484    }
1485
1486    @Override
1487    public void onBackPressed() {
1488        if (isAllAppsVisible()) {
1489            closeAllApps(true);
1490        } else {
1491            closeFolder();
1492        }
1493        // Some launcher layouts don't have a previous and next view
1494        if (mPreviousView != null) {
1495            dismissPreview(mPreviousView);
1496            dismissPreview(mNextView);
1497        }
1498    }
1499
1500    private void closeFolder() {
1501        Folder folder = mWorkspace.getOpenFolder();
1502        if (folder != null) {
1503            closeFolder(folder);
1504        }
1505    }
1506
1507    void closeFolder(Folder folder) {
1508        folder.getInfo().opened = false;
1509        ViewGroup parent = (ViewGroup) folder.getParent();
1510        if (parent != null) {
1511            parent.removeView(folder);
1512            if (folder instanceof DropTarget) {
1513                // Live folders aren't DropTargets.
1514                mDragController.removeDropTarget((DropTarget)folder);
1515            }
1516        }
1517        folder.onClose();
1518    }
1519
1520    /**
1521     * Re-listen when widgets are reset.
1522     */
1523    private void onAppWidgetReset() {
1524        mAppWidgetHost.startListening();
1525    }
1526
1527    /**
1528     * Go through the and disconnect any of the callbacks in the drawables and the views or we
1529     * leak the previous Home screen on orientation change.
1530     */
1531    private void unbindDesktopItems() {
1532        for (ItemInfo item: mDesktopItems) {
1533            item.unbind();
1534        }
1535    }
1536
1537    /**
1538     * Launches the intent referred by the clicked shortcut.
1539     *
1540     * @param v The view representing the clicked shortcut.
1541     */
1542    public void onClick(View v) {
1543        Object tag = v.getTag();
1544        if (tag instanceof ShortcutInfo) {
1545            // Open shortcut
1546            final Intent intent = ((ShortcutInfo) tag).intent;
1547            int[] pos = new int[2];
1548            v.getLocationOnScreen(pos);
1549            intent.setSourceBounds(new Rect(pos[0], pos[1],
1550                    pos[0] + v.getWidth(), pos[1] + v.getHeight()));
1551            startActivitySafely(intent, tag);
1552        } else if (tag instanceof FolderInfo) {
1553            handleFolderClick((FolderInfo) tag);
1554        } else if (v == mHandleView) {
1555            if (isAllAppsVisible()) {
1556                closeAllApps(true);
1557            } else {
1558                showAllApps(true);
1559            }
1560        }
1561    }
1562
1563    private final class SlideDownFinishedListener implements Animation.AnimationListener {
1564        TabHost mHomeCustomizationDrawer;
1565        SlideDownFinishedListener(TabHost homeCustomizationDrawer) {
1566            mHomeCustomizationDrawer = homeCustomizationDrawer;
1567        }
1568        public void onAnimationEnd(Animation animation) {
1569            mHomeCustomizationDrawer.setVisibility(View.GONE);
1570        }
1571        public void onAnimationRepeat(Animation animation) {}
1572        public void onAnimationStart(Animation animation) {}
1573    }
1574
1575    public boolean onTouch(View v, MotionEvent event) {
1576        // this is being forwarded from mWorkspace;
1577        // clicking anywhere on the workspace causes the drawer to slide down
1578        if (mHomeCustomizationDrawer != null && mHomeCustomizationDrawer.getVisibility() == View.VISIBLE) {
1579            Animation slideDownAnimation = AnimationUtils.loadAnimation(this, R.anim.home_customization_drawer_slide_down);
1580            slideDownAnimation.setAnimationListener(new SlideDownFinishedListener(mHomeCustomizationDrawer));
1581            mHomeCustomizationDrawer.startAnimation(slideDownAnimation);
1582        }
1583        return false;
1584    }
1585
1586    /**
1587     * Event handler for the "plus" button that appears on the home screen, which
1588     * enters home screen customization mode.
1589     *
1590     * @param v The view that was clicked.
1591     */
1592    public void onClickAddButton(View v) {
1593
1594        // Animate the widget chooser up from the bottom of the screen
1595        if (mHomeCustomizationDrawer != null && mHomeCustomizationDrawer.getVisibility() == View.GONE) {
1596            mHomeCustomizationDrawer.setVisibility(View.VISIBLE);
1597            mHomeCustomizationDrawer.startAnimation(AnimationUtils.loadAnimation(this, R.anim.home_customization_drawer_slide_up));
1598        }
1599    }
1600
1601    public void onClickAllAppsButton(View w) {
1602        showAllApps(true);
1603    }
1604
1605    void startActivitySafely(Intent intent, Object tag) {
1606        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
1607        try {
1608            startActivity(intent);
1609        } catch (ActivityNotFoundException e) {
1610            Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
1611            Log.e(TAG, "Unable to launch. tag=" + tag + " intent=" + intent, e);
1612        } catch (SecurityException e) {
1613            Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
1614            Log.e(TAG, "Launcher does not have the permission to launch " + intent +
1615                    ". Make sure to create a MAIN intent-filter for the corresponding activity " +
1616                    "or use the exported attribute for this activity. "
1617                    + "tag="+ tag + " intent=" + intent, e);
1618        }
1619    }
1620
1621    void startActivityForResultSafely(Intent intent, int requestCode) {
1622        try {
1623            startActivityForResult(intent, requestCode);
1624        } catch (ActivityNotFoundException e) {
1625            Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
1626        } catch (SecurityException e) {
1627            Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
1628            Log.e(TAG, "Launcher does not have the permission to launch " + intent +
1629                    ". Make sure to create a MAIN intent-filter for the corresponding activity " +
1630                    "or use the exported attribute for this activity.", e);
1631        }
1632    }
1633
1634    private void handleFolderClick(FolderInfo folderInfo) {
1635        if (!folderInfo.opened) {
1636            // Close any open folder
1637            closeFolder();
1638            // Open the requested folder
1639            openFolder(folderInfo);
1640        } else {
1641            // Find the open folder...
1642            Folder openFolder = mWorkspace.getFolderForTag(folderInfo);
1643            int folderScreen;
1644            if (openFolder != null) {
1645                folderScreen = mWorkspace.getScreenForView(openFolder);
1646                // .. and close it
1647                closeFolder(openFolder);
1648                if (folderScreen != mWorkspace.getCurrentScreen()) {
1649                    // Close any folder open on the current screen
1650                    closeFolder();
1651                    // Pull the folder onto this screen
1652                    openFolder(folderInfo);
1653                }
1654            }
1655        }
1656    }
1657
1658    /**
1659     * Opens the user fodler described by the specified tag. The opening of the folder
1660     * is animated relative to the specified View. If the View is null, no animation
1661     * is played.
1662     *
1663     * @param folderInfo The FolderInfo describing the folder to open.
1664     */
1665    public void openFolder(FolderInfo folderInfo) {
1666        Folder openFolder;
1667
1668        if (folderInfo instanceof UserFolderInfo) {
1669            openFolder = UserFolder.fromXml(this);
1670        } else if (folderInfo instanceof LiveFolderInfo) {
1671            openFolder = com.android.launcher2.LiveFolder.fromXml(this, folderInfo);
1672        } else {
1673            return;
1674        }
1675
1676        openFolder.setDragController(mDragController);
1677        openFolder.setLauncher(this);
1678
1679        openFolder.bind(folderInfo);
1680        folderInfo.opened = true;
1681
1682        mWorkspace.addInFullScreen(openFolder, folderInfo.screen);
1683
1684        openFolder.onOpen();
1685    }
1686
1687    public boolean onLongClick(View v) {
1688        switch (v.getId()) {
1689            case R.id.previous_screen:
1690                if (!isAllAppsVisible()) {
1691                    mWorkspace.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS,
1692                            HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
1693                    showPreviews(v);
1694                }
1695                return true;
1696            case R.id.next_screen:
1697                if (!isAllAppsVisible()) {
1698                    mWorkspace.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS,
1699                            HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
1700                    showPreviews(v);
1701                }
1702                return true;
1703            case R.id.all_apps_button:
1704                if (!isAllAppsVisible()) {
1705                    mWorkspace.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS,
1706                            HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
1707                    showPreviews(v);
1708                }
1709                return true;
1710        }
1711
1712        if (isWorkspaceLocked()) {
1713            return false;
1714        }
1715
1716        if (!(v instanceof CellLayout)) {
1717            v = (View) v.getParent();
1718        }
1719
1720        CellLayout.CellInfo cellInfo = (CellLayout.CellInfo) v.getTag();
1721
1722        // This happens when long clicking an item with the dpad/trackball
1723        if (cellInfo == null) {
1724            return true;
1725        }
1726
1727        if (mWorkspace.allowLongPress()) {
1728            if (cellInfo.cell == null) {
1729                if (cellInfo.valid) {
1730                    // User long pressed on empty space
1731                    mWorkspace.setAllowLongPress(false);
1732                    mWorkspace.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS,
1733                            HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
1734                    showAddDialog(cellInfo);
1735                }
1736            } else {
1737                if (!(cellInfo.cell instanceof Folder)) {
1738                    // User long pressed on an item
1739                    mWorkspace.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS,
1740                            HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
1741                    mWorkspace.startDrag(cellInfo);
1742                }
1743            }
1744        }
1745        return true;
1746    }
1747
1748    @SuppressWarnings({"unchecked"})
1749    private void dismissPreview(final View v) {
1750        final PopupWindow window = (PopupWindow) v.getTag();
1751        if (window != null) {
1752            window.setOnDismissListener(new PopupWindow.OnDismissListener() {
1753                public void onDismiss() {
1754                    ViewGroup group = (ViewGroup) v.getTag(R.id.workspace);
1755                    int count = group.getChildCount();
1756                    for (int i = 0; i < count; i++) {
1757                        ((ImageView) group.getChildAt(i)).setImageDrawable(null);
1758                    }
1759                    ArrayList<Bitmap> bitmaps = (ArrayList<Bitmap>) v.getTag(R.id.icon);
1760                    for (Bitmap bitmap : bitmaps) bitmap.recycle();
1761
1762                    v.setTag(R.id.workspace, null);
1763                    v.setTag(R.id.icon, null);
1764                    window.setOnDismissListener(null);
1765                }
1766            });
1767            window.dismiss();
1768        }
1769        v.setTag(null);
1770    }
1771
1772    private void showPreviews(View anchor) {
1773        showPreviews(anchor, 0, mWorkspace.getChildCount());
1774    }
1775
1776    private void showPreviews(final View anchor, int start, int end) {
1777        final Resources resources = getResources();
1778        final Workspace workspace = mWorkspace;
1779
1780        CellLayout cell = ((CellLayout) workspace.getChildAt(start));
1781
1782        float max = workspace.getChildCount();
1783
1784        final Rect r = new Rect();
1785        resources.getDrawable(R.drawable.preview_background).getPadding(r);
1786        int extraW = (int) ((r.left + r.right) * max);
1787        int extraH = r.top + r.bottom;
1788
1789        int aW = cell.getWidth() - extraW;
1790        float w = aW / max;
1791
1792        int width = cell.getWidth();
1793        int height = cell.getHeight();
1794        int x = cell.getLeftPadding();
1795        int y = cell.getTopPadding();
1796        width -= (x + cell.getRightPadding());
1797        height -= (y + cell.getBottomPadding());
1798
1799        float scale = w / width;
1800
1801        int count = end - start;
1802
1803        final float sWidth = width * scale;
1804        float sHeight = height * scale;
1805
1806        LinearLayout preview = new LinearLayout(this);
1807
1808        PreviewTouchHandler handler = new PreviewTouchHandler(anchor);
1809        ArrayList<Bitmap> bitmaps = new ArrayList<Bitmap>(count);
1810
1811        for (int i = start; i < end; i++) {
1812            ImageView image = new ImageView(this);
1813            cell = (CellLayout) workspace.getChildAt(i);
1814
1815            final Bitmap bitmap = Bitmap.createBitmap((int) sWidth, (int) sHeight,
1816                    Bitmap.Config.ARGB_8888);
1817
1818            final Canvas c = new Canvas(bitmap);
1819            c.scale(scale, scale);
1820            c.translate(-cell.getLeftPadding(), -cell.getTopPadding());
1821            cell.dispatchDraw(c);
1822
1823            image.setBackgroundDrawable(resources.getDrawable(R.drawable.preview_background));
1824            image.setImageBitmap(bitmap);
1825            image.setTag(i);
1826            image.setOnClickListener(handler);
1827            image.setOnFocusChangeListener(handler);
1828            image.setFocusable(true);
1829            if (i == mWorkspace.getCurrentScreen()) image.requestFocus();
1830
1831            preview.addView(image,
1832                    LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
1833
1834            bitmaps.add(bitmap);
1835        }
1836
1837        final PopupWindow p = new PopupWindow(this);
1838        p.setContentView(preview);
1839        p.setWidth((int) (sWidth * count + extraW));
1840        p.setHeight((int) (sHeight + extraH));
1841        p.setAnimationStyle(R.style.AnimationPreview);
1842        p.setOutsideTouchable(true);
1843        p.setFocusable(true);
1844        p.setBackgroundDrawable(new ColorDrawable(0));
1845        p.showAsDropDown(anchor, 0, 0);
1846
1847        p.setOnDismissListener(new PopupWindow.OnDismissListener() {
1848            public void onDismiss() {
1849                dismissPreview(anchor);
1850            }
1851        });
1852
1853        anchor.setTag(p);
1854        anchor.setTag(R.id.workspace, preview);
1855        anchor.setTag(R.id.icon, bitmaps);
1856    }
1857
1858    class PreviewTouchHandler implements View.OnClickListener, Runnable, View.OnFocusChangeListener {
1859        private final View mAnchor;
1860
1861        public PreviewTouchHandler(View anchor) {
1862            mAnchor = anchor;
1863        }
1864
1865        public void onClick(View v) {
1866            mWorkspace.snapToScreen((Integer) v.getTag());
1867            v.post(this);
1868        }
1869
1870        public void run() {
1871            dismissPreview(mAnchor);
1872        }
1873
1874        public void onFocusChange(View v, boolean hasFocus) {
1875            if (hasFocus) {
1876                mWorkspace.snapToScreen((Integer) v.getTag());
1877            }
1878        }
1879    }
1880
1881    Workspace getWorkspace() {
1882        return mWorkspace;
1883    }
1884
1885    @Override
1886    protected Dialog onCreateDialog(int id) {
1887        switch (id) {
1888            case DIALOG_CREATE_SHORTCUT:
1889                return new CreateShortcut().createDialog();
1890            case DIALOG_RENAME_FOLDER:
1891                return new RenameFolder().createDialog();
1892        }
1893
1894        return super.onCreateDialog(id);
1895    }
1896
1897    @Override
1898    protected void onPrepareDialog(int id, Dialog dialog) {
1899        switch (id) {
1900            case DIALOG_CREATE_SHORTCUT:
1901                break;
1902            case DIALOG_RENAME_FOLDER:
1903                if (mFolderInfo != null) {
1904                    EditText input = (EditText) dialog.findViewById(R.id.folder_name);
1905                    final CharSequence text = mFolderInfo.title;
1906                    input.setText(text);
1907                    input.setSelection(0, text.length());
1908                }
1909                break;
1910        }
1911    }
1912
1913    void showRenameDialog(FolderInfo info) {
1914        mFolderInfo = info;
1915        mWaitingForResult = true;
1916        showDialog(DIALOG_RENAME_FOLDER);
1917    }
1918
1919    private void showAddDialog(CellLayout.CellInfo cellInfo) {
1920        mAddItemCellInfo = cellInfo;
1921        mWaitingForResult = true;
1922        showDialog(DIALOG_CREATE_SHORTCUT);
1923    }
1924
1925    private void pickShortcut() {
1926        // Insert extra item to handle picking application
1927        Bundle bundle = new Bundle();
1928
1929        ArrayList<String> shortcutNames = new ArrayList<String>();
1930        shortcutNames.add(getString(R.string.group_applications));
1931        bundle.putStringArrayList(Intent.EXTRA_SHORTCUT_NAME, shortcutNames);
1932
1933        ArrayList<ShortcutIconResource> shortcutIcons = new ArrayList<ShortcutIconResource>();
1934        shortcutIcons.add(ShortcutIconResource.fromContext(Launcher.this,
1935                        R.drawable.ic_launcher_application));
1936        bundle.putParcelableArrayList(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, shortcutIcons);
1937
1938        Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
1939        pickIntent.putExtra(Intent.EXTRA_INTENT, new Intent(Intent.ACTION_CREATE_SHORTCUT));
1940        pickIntent.putExtra(Intent.EXTRA_TITLE, getText(R.string.title_select_shortcut));
1941        pickIntent.putExtras(bundle);
1942
1943        startActivityForResult(pickIntent, REQUEST_PICK_SHORTCUT);
1944    }
1945
1946    private class RenameFolder {
1947        private EditText mInput;
1948
1949        Dialog createDialog() {
1950            final View layout = View.inflate(Launcher.this, R.layout.rename_folder, null);
1951            mInput = (EditText) layout.findViewById(R.id.folder_name);
1952
1953            AlertDialog.Builder builder = new AlertDialog.Builder(Launcher.this);
1954            builder.setIcon(0);
1955            builder.setTitle(getString(R.string.rename_folder_title));
1956            builder.setCancelable(true);
1957            builder.setOnCancelListener(new Dialog.OnCancelListener() {
1958                public void onCancel(DialogInterface dialog) {
1959                    cleanup();
1960                }
1961            });
1962            builder.setNegativeButton(getString(R.string.cancel_action),
1963                new Dialog.OnClickListener() {
1964                    public void onClick(DialogInterface dialog, int which) {
1965                        cleanup();
1966                    }
1967                }
1968            );
1969            builder.setPositiveButton(getString(R.string.rename_action),
1970                new Dialog.OnClickListener() {
1971                    public void onClick(DialogInterface dialog, int which) {
1972                        changeFolderName();
1973                    }
1974                }
1975            );
1976            builder.setView(layout);
1977
1978            final AlertDialog dialog = builder.create();
1979            dialog.setOnShowListener(new DialogInterface.OnShowListener() {
1980                public void onShow(DialogInterface dialog) {
1981                    mWaitingForResult = true;
1982                    mInput.requestFocus();
1983                    InputMethodManager inputManager = (InputMethodManager)
1984                            getSystemService(Context.INPUT_METHOD_SERVICE);
1985                    inputManager.showSoftInput(mInput, 0);
1986                }
1987            });
1988
1989            return dialog;
1990        }
1991
1992        private void changeFolderName() {
1993            final String name = mInput.getText().toString();
1994            if (!TextUtils.isEmpty(name)) {
1995                // Make sure we have the right folder info
1996                mFolderInfo = mFolders.get(mFolderInfo.id);
1997                mFolderInfo.title = name;
1998                LauncherModel.updateItemInDatabase(Launcher.this, mFolderInfo);
1999
2000                if (mWorkspaceLoading) {
2001                    lockAllApps();
2002                    mModel.startLoader(Launcher.this, false);
2003                } else {
2004                    final FolderIcon folderIcon = (FolderIcon)
2005                            mWorkspace.getViewForTag(mFolderInfo);
2006                    if (folderIcon != null) {
2007                        folderIcon.setText(name);
2008                        getWorkspace().requestLayout();
2009                    } else {
2010                        lockAllApps();
2011                        mWorkspaceLoading = true;
2012                        mModel.startLoader(Launcher.this, false);
2013                    }
2014                }
2015            }
2016            cleanup();
2017        }
2018
2019        private void cleanup() {
2020            dismissDialog(DIALOG_RENAME_FOLDER);
2021            mWaitingForResult = false;
2022            mFolderInfo = null;
2023        }
2024    }
2025
2026    // Now a part of LauncherModel.Callbacks. Used to reorder loading steps.
2027    public boolean isAllAppsVisible() {
2028        return (mAllAppsGrid != null) ? mAllAppsGrid.isVisible() : false;
2029    }
2030
2031    // AllAppsView.Watcher
2032    public void zoomed(float zoom) {
2033        if (zoom == 1.0f) {
2034            mWorkspace.setVisibility(View.GONE);
2035        }
2036    }
2037
2038    void showAllApps(boolean animated) {
2039        mAllAppsGrid.zoom(1.0f, animated);
2040
2041        ((View) mAllAppsGrid).setFocusable(true);
2042        ((View) mAllAppsGrid).requestFocus();
2043
2044        // TODO: fade these two too
2045        mDeleteZone.setVisibility(View.GONE);
2046    }
2047
2048    /**
2049     * Things to test when changing this code.
2050     *   - Home from workspace
2051     *          - from center screen
2052     *          - from other screens
2053     *   - Home from all apps
2054     *          - from center screen
2055     *          - from other screens
2056     *   - Back from all apps
2057     *          - from center screen
2058     *          - from other screens
2059     *   - Launch app from workspace and quit
2060     *          - with back
2061     *          - with home
2062     *   - Launch app from all apps and quit
2063     *          - with back
2064     *          - with home
2065     *   - Go to a screen that's not the default, then all
2066     *     apps, and launch and app, and go back
2067     *          - with back
2068     *          -with home
2069     *   - On workspace, long press power and go back
2070     *          - with back
2071     *          - with home
2072     *   - On all apps, long press power and go back
2073     *          - with back
2074     *          - with home
2075     *   - On workspace, power off
2076     *   - On all apps, power off
2077     *   - Launch an app and turn off the screen while in that app
2078     *          - Go back with home key
2079     *          - Go back with back key  TODO: make this not go to workspace
2080     *          - From all apps
2081     *          - From workspace
2082     *   - Enter and exit car mode (becuase it causes an extra configuration changed)
2083     *          - From all apps
2084     *          - From the center workspace
2085     *          - From another workspace
2086     */
2087    void closeAllApps(boolean animated) {
2088        if (mAllAppsGrid.isVisible()) {
2089            mWorkspace.setVisibility(View.VISIBLE);
2090            mAllAppsGrid.zoom(0.0f, animated);
2091            ((View)mAllAppsGrid).setFocusable(false);
2092            mWorkspace.getChildAt(mWorkspace.getCurrentScreen()).requestFocus();
2093        }
2094    }
2095
2096    void lockAllApps() {
2097        // TODO
2098    }
2099
2100    void unlockAllApps() {
2101        // TODO
2102    }
2103
2104    /**
2105     * Displays the shortcut creation dialog and launches, if necessary, the
2106     * appropriate activity.
2107     */
2108    private class CreateShortcut implements DialogInterface.OnClickListener,
2109            DialogInterface.OnCancelListener, DialogInterface.OnDismissListener,
2110            DialogInterface.OnShowListener {
2111
2112        private AddAdapter mAdapter;
2113
2114        Dialog createDialog() {
2115            mAdapter = new AddAdapter(Launcher.this);
2116
2117            final AlertDialog.Builder builder = new AlertDialog.Builder(Launcher.this);
2118            builder.setTitle(getString(R.string.menu_item_add_item));
2119            builder.setAdapter(mAdapter, this);
2120
2121            builder.setInverseBackgroundForced(true);
2122
2123            AlertDialog dialog = builder.create();
2124            dialog.setOnCancelListener(this);
2125            dialog.setOnDismissListener(this);
2126            dialog.setOnShowListener(this);
2127
2128            return dialog;
2129        }
2130
2131        public void onCancel(DialogInterface dialog) {
2132            mWaitingForResult = false;
2133            cleanup();
2134        }
2135
2136        public void onDismiss(DialogInterface dialog) {
2137        }
2138
2139        private void cleanup() {
2140            try {
2141                dismissDialog(DIALOG_CREATE_SHORTCUT);
2142            } catch (Exception e) {
2143                // An exception is thrown if the dialog is not visible, which is fine
2144            }
2145        }
2146
2147        /**
2148         * Handle the action clicked in the "Add to home" dialog.
2149         */
2150        public void onClick(DialogInterface dialog, int which) {
2151            Resources res = getResources();
2152            cleanup();
2153
2154            switch (which) {
2155                case AddAdapter.ITEM_SHORTCUT: {
2156                    pickShortcut();
2157                    break;
2158                }
2159
2160                case AddAdapter.ITEM_APPWIDGET: {
2161                    int appWidgetId = Launcher.this.mAppWidgetHost.allocateAppWidgetId();
2162
2163                    Intent pickIntent = new Intent(AppWidgetManager.ACTION_APPWIDGET_PICK);
2164                    pickIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
2165                    // start the pick activity
2166                    startActivityForResult(pickIntent, REQUEST_PICK_APPWIDGET);
2167                    break;
2168                }
2169
2170                case AddAdapter.ITEM_LIVE_FOLDER: {
2171                    // Insert extra item to handle inserting folder
2172                    Bundle bundle = new Bundle();
2173
2174                    ArrayList<String> shortcutNames = new ArrayList<String>();
2175                    shortcutNames.add(res.getString(R.string.group_folder));
2176                    bundle.putStringArrayList(Intent.EXTRA_SHORTCUT_NAME, shortcutNames);
2177
2178                    ArrayList<ShortcutIconResource> shortcutIcons =
2179                            new ArrayList<ShortcutIconResource>();
2180                    shortcutIcons.add(ShortcutIconResource.fromContext(Launcher.this,
2181                            R.drawable.ic_launcher_folder));
2182                    bundle.putParcelableArrayList(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, shortcutIcons);
2183
2184                    Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
2185                    pickIntent.putExtra(Intent.EXTRA_INTENT,
2186                            new Intent(LiveFolders.ACTION_CREATE_LIVE_FOLDER));
2187                    pickIntent.putExtra(Intent.EXTRA_TITLE,
2188                            getText(R.string.title_select_live_folder));
2189                    pickIntent.putExtras(bundle);
2190
2191                    startActivityForResult(pickIntent, REQUEST_PICK_LIVE_FOLDER);
2192                    break;
2193                }
2194
2195                case AddAdapter.ITEM_WALLPAPER: {
2196                    startWallpaper();
2197                    break;
2198                }
2199            }
2200        }
2201
2202        public void onShow(DialogInterface dialog) {
2203            mWaitingForResult = true;
2204        }
2205    }
2206
2207    /**
2208     * Receives notifications when applications are added/removed.
2209     */
2210    private class CloseSystemDialogsIntentReceiver extends BroadcastReceiver {
2211        @Override
2212        public void onReceive(Context context, Intent intent) {
2213            closeSystemDialogs();
2214            String reason = intent.getStringExtra("reason");
2215            if (!"homekey".equals(reason)) {
2216                boolean animate = true;
2217                if (mPaused || "lock".equals(reason)) {
2218                    animate = false;
2219                }
2220                closeAllApps(animate);
2221            }
2222        }
2223    }
2224
2225    /**
2226     * Receives notifications whenever the appwidgets are reset.
2227     */
2228    private class AppWidgetResetObserver extends ContentObserver {
2229        public AppWidgetResetObserver() {
2230            super(new Handler());
2231        }
2232
2233        @Override
2234        public void onChange(boolean selfChange) {
2235            onAppWidgetReset();
2236        }
2237    }
2238
2239    /**
2240     * Implementation of the method from LauncherModel.Callbacks.
2241     */
2242    public int getCurrentWorkspaceScreen() {
2243        if (mWorkspace != null) {
2244            return mWorkspace.getCurrentScreen();
2245        } else {
2246            return SCREEN_COUNT / 2;
2247        }
2248    }
2249
2250    /**
2251     * Refreshes the shortcuts shown on the workspace.
2252     *
2253     * Implementation of the method from LauncherModel.Callbacks.
2254     */
2255    public void startBinding() {
2256        final Workspace workspace = mWorkspace;
2257        int count = workspace.getChildCount();
2258        for (int i = 0; i < count; i++) {
2259            // Use removeAllViewsInLayout() to avoid an extra requestLayout() and invalidate().
2260            ((ViewGroup) workspace.getChildAt(i)).removeAllViewsInLayout();
2261        }
2262
2263        if (DEBUG_USER_INTERFACE) {
2264            android.widget.Button finishButton = new android.widget.Button(this);
2265            finishButton.setText("Finish");
2266            workspace.addInScreen(finishButton, 1, 0, 0, 1, 1);
2267
2268            finishButton.setOnClickListener(new android.widget.Button.OnClickListener() {
2269                public void onClick(View v) {
2270                    finish();
2271                }
2272            });
2273        }
2274    }
2275
2276    /**
2277     * Bind the items start-end from the list.
2278     *
2279     * Implementation of the method from LauncherModel.Callbacks.
2280     */
2281    public void bindItems(ArrayList<ItemInfo> shortcuts, int start, int end) {
2282
2283        final Workspace workspace = mWorkspace;
2284
2285        for (int i=start; i<end; i++) {
2286            final ItemInfo item = shortcuts.get(i);
2287            mDesktopItems.add(item);
2288            switch (item.itemType) {
2289                case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION:
2290                case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
2291                    final View shortcut = createShortcut((ShortcutInfo)item);
2292                    workspace.addInScreen(shortcut, item.screen, item.cellX, item.cellY, 1, 1,
2293                            false);
2294                    break;
2295                case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER:
2296                    final FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon, this,
2297                            (ViewGroup) workspace.getChildAt(workspace.getCurrentScreen()),
2298                            (UserFolderInfo) item);
2299                    workspace.addInScreen(newFolder, item.screen, item.cellX, item.cellY, 1, 1,
2300                            false);
2301                    break;
2302                case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER:
2303                    final FolderIcon newLiveFolder = LiveFolderIcon.fromXml(
2304                            R.layout.live_folder_icon, this,
2305                            (ViewGroup) workspace.getChildAt(workspace.getCurrentScreen()),
2306                            (LiveFolderInfo) item);
2307                    workspace.addInScreen(newLiveFolder, item.screen, item.cellX, item.cellY, 1, 1,
2308                            false);
2309                    break;
2310            }
2311        }
2312
2313        workspace.requestLayout();
2314    }
2315
2316    /**
2317     * Implementation of the method from LauncherModel.Callbacks.
2318     */
2319    public void bindFolders(HashMap<Long, FolderInfo> folders) {
2320        mFolders.clear();
2321        mFolders.putAll(folders);
2322    }
2323
2324    /**
2325     * Add the views for a widget to the workspace.
2326     *
2327     * Implementation of the method from LauncherModel.Callbacks.
2328     */
2329    public void bindAppWidget(LauncherAppWidgetInfo item) {
2330        final long start = DEBUG_WIDGETS ? SystemClock.uptimeMillis() : 0;
2331        if (DEBUG_WIDGETS) {
2332            Log.d(TAG, "bindAppWidget: " + item);
2333        }
2334        final Workspace workspace = mWorkspace;
2335
2336        final int appWidgetId = item.appWidgetId;
2337        final AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
2338        if (DEBUG_WIDGETS) {
2339            Log.d(TAG, "bindAppWidget: id=" + item.appWidgetId + " belongs to component " + appWidgetInfo.provider);
2340        }
2341
2342        item.hostView = mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
2343
2344        item.hostView.setAppWidget(appWidgetId, appWidgetInfo);
2345        item.hostView.setTag(item);
2346
2347        workspace.addInScreen(item.hostView, item.screen, item.cellX,
2348                item.cellY, item.spanX, item.spanY, false);
2349
2350        workspace.requestLayout();
2351
2352        mDesktopItems.add(item);
2353
2354        if (DEBUG_WIDGETS) {
2355            Log.d(TAG, "bound widget id="+item.appWidgetId+" in "
2356                    + (SystemClock.uptimeMillis()-start) + "ms");
2357        }
2358    }
2359
2360    /**
2361     * Callback saying that there aren't any more items to bind.
2362     *
2363     * Implementation of the method from LauncherModel.Callbacks.
2364     */
2365    public void finishBindingItems() {
2366        if (mSavedState != null) {
2367            if (!mWorkspace.hasFocus()) {
2368                mWorkspace.getChildAt(mWorkspace.getCurrentScreen()).requestFocus();
2369            }
2370
2371            final long[] userFolders = mSavedState.getLongArray(RUNTIME_STATE_USER_FOLDERS);
2372            if (userFolders != null) {
2373                for (long folderId : userFolders) {
2374                    final FolderInfo info = mFolders.get(folderId);
2375                    if (info != null) {
2376                        openFolder(info);
2377                    }
2378                }
2379                final Folder openFolder = mWorkspace.getOpenFolder();
2380                if (openFolder != null) {
2381                    openFolder.requestFocus();
2382                }
2383            }
2384
2385            mSavedState = null;
2386        }
2387
2388        if (mSavedInstanceState != null) {
2389            super.onRestoreInstanceState(mSavedInstanceState);
2390            mSavedInstanceState = null;
2391        }
2392
2393        mWorkspaceLoading = false;
2394    }
2395
2396    /**
2397     * Add the icons for all apps.
2398     *
2399     * Implementation of the method from LauncherModel.Callbacks.
2400     */
2401    public void bindAllApplications(ArrayList<ApplicationInfo> apps) {
2402        mAllAppsGrid.setApps(apps);
2403    }
2404
2405    /**
2406     * A package was installed.
2407     *
2408     * Implementation of the method from LauncherModel.Callbacks.
2409     */
2410    public void bindAppsAdded(ArrayList<ApplicationInfo> apps) {
2411        removeDialog(DIALOG_CREATE_SHORTCUT);
2412        mAllAppsGrid.addApps(apps);
2413    }
2414
2415    /**
2416     * A package was updated.
2417     *
2418     * Implementation of the method from LauncherModel.Callbacks.
2419     */
2420    public void bindAppsUpdated(ArrayList<ApplicationInfo> apps) {
2421        removeDialog(DIALOG_CREATE_SHORTCUT);
2422        mWorkspace.updateShortcuts(apps);
2423        mAllAppsGrid.updateApps(apps);
2424    }
2425
2426    /**
2427     * A package was uninstalled.
2428     *
2429     * Implementation of the method from LauncherModel.Callbacks.
2430     */
2431    public void bindAppsRemoved(ArrayList<ApplicationInfo> apps, boolean permanent) {
2432        removeDialog(DIALOG_CREATE_SHORTCUT);
2433        if (permanent) {
2434            mWorkspace.removeItems(apps);
2435        }
2436        mAllAppsGrid.removeApps(apps);
2437    }
2438
2439    /**
2440     * Prints out out state for debugging.
2441     */
2442    public void dumpState() {
2443        Log.d(TAG, "BEGIN launcher2 dump state for launcher " + this);
2444        Log.d(TAG, "mSavedState=" + mSavedState);
2445        Log.d(TAG, "mWorkspaceLoading=" + mWorkspaceLoading);
2446        Log.d(TAG, "mRestoring=" + mRestoring);
2447        Log.d(TAG, "mWaitingForResult=" + mWaitingForResult);
2448        Log.d(TAG, "mSavedInstanceState=" + mSavedInstanceState);
2449        Log.d(TAG, "mDesktopItems.size=" + mDesktopItems.size());
2450        Log.d(TAG, "mFolders.size=" + mFolders.size());
2451        mModel.dumpState();
2452        mAllAppsGrid.dumpState();
2453        Log.d(TAG, "END launcher2 dump state");
2454    }
2455}
2456