src/com/android/launcher3/Launcher.java

   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
  17 package com.android.launcher3;
  18
  19 import android.animation.Animator;
  20 import android.animation.AnimatorListenerAdapter;
  21 import android.animation.AnimatorSet;
  22 import android.animation.ObjectAnimator;
  23 import android.animation.PropertyValuesHolder;
  24 import android.animation.ValueAnimator;
  25 import android.annotation.SuppressLint;
  26 import android.annotation.TargetApi;
  27 import android.app.Activity;
  28 import android.app.ActivityManager;
  29 import android.app.ActivityOptions;
  30 import android.app.AlertDialog;
  31 import android.app.SearchManager;
  32 import android.appwidget.AppWidgetHostView;
  33 import android.appwidget.AppWidgetManager;
  34 import android.appwidget.AppWidgetProviderInfo;
  35 import android.content.ActivityNotFoundException;
  36 import android.content.BroadcastReceiver;
  37 import android.content.ComponentCallbacks2;
  38 import android.content.ComponentName;
  39 import android.content.Context;
  40 import android.content.DialogInterface;
  41 import android.content.Intent;
  42 import android.content.IntentFilter;
  43 import android.content.IntentSender;
  44 import android.content.SharedPreferences;
  45 import android.content.pm.ActivityInfo;
  46 import android.content.pm.ApplicationInfo;
  47 import android.content.pm.PackageManager;
  48 import android.content.pm.PackageManager.NameNotFoundException;
  49 import android.content.res.Configuration;
  50 import android.database.sqlite.SQLiteDatabase;
  51 import android.graphics.Bitmap;
  52 import android.graphics.Canvas;
  53 import android.graphics.Color;
  54 import android.graphics.PorterDuff;
  55 import android.graphics.Rect;
  56 import android.graphics.drawable.ColorDrawable;
  57 import android.graphics.drawable.Drawable;
  58 import android.net.Uri;
  59 import android.os.AsyncTask;
  60 import android.os.Build;
  61 import android.os.Bundle;
  62 import android.os.Environment;
  63 import android.os.Handler;
  64 import android.os.Message;
  65 import android.os.StrictMode;
  66 import android.os.SystemClock;
  67 import android.os.UserHandle;
  68 import android.text.Selection;
  69 import android.text.SpannableStringBuilder;
  70 import android.text.TextUtils;
  71 import android.text.method.TextKeyListener;
  72 import android.util.Log;
  73 import android.view.Display;
  74 import android.view.Gravity;
  75 import android.view.HapticFeedbackConstants;
  76 import android.view.KeyEvent;
  77 import android.view.LayoutInflater;
  78 import android.view.Menu;
  79 import android.view.MotionEvent;
  80 import android.view.Surface;
  81 import android.view.View;
  82 import android.view.View.OnClickListener;
  83 import android.view.View.OnLongClickListener;
  84 import android.view.ViewGroup;
  85 import android.view.ViewStub;
  86 import android.view.ViewTreeObserver;
  87 import android.view.Window;
  88 import android.view.WindowManager;
  89 import android.view.accessibility.AccessibilityEvent;
  90 import android.view.animation.OvershootInterpolator;
  91 import android.view.inputmethod.InputMethodManager;
  92 import android.widget.Advanceable;
  93 import android.widget.FrameLayout;
  94 import android.widget.ImageView;
  95 import android.widget.TextView;
  96 import android.widget.Toast;
  97
  98 import com.android.launcher3.DropTarget.DragObject;
  99 import com.android.launcher3.PagedView.PageSwitchListener;
 100 import com.android.launcher3.allapps.AllAppsContainerView;
 101 import com.android.launcher3.compat.AppWidgetManagerCompat;
 102 import com.android.launcher3.compat.LauncherActivityInfoCompat;
 103 import com.android.launcher3.compat.LauncherAppsCompat;
 104 import com.android.launcher3.compat.UserHandleCompat;
 105 import com.android.launcher3.compat.UserManagerCompat;
 106 import com.android.launcher3.model.WidgetsModel;
 107 import com.android.launcher3.util.ComponentKey;
 108 import com.android.launcher3.util.LongArrayMap;
 109 import com.android.launcher3.util.Thunk;
 110 import com.android.launcher3.widget.PendingAddWidgetInfo;
 111 import com.android.launcher3.widget.WidgetHostViewLoader;
 112 import com.android.launcher3.widget.WidgetsContainerView;
 113
 114 import java.io.File;
 115 import java.io.FileDescriptor;
 116 import java.io.FileOutputStream;
 117 import java.io.IOException;
 118 import java.io.PrintWriter;
 119 import java.lang.reflect.InvocationTargetException;
 120 import java.lang.reflect.Method;
 121 import java.text.DateFormat;
 122 import java.util.ArrayList;
 123 import java.util.Collection;
 124 import java.util.Date;
 125 import java.util.HashMap;
 126 import java.util.HashSet;
 127 import java.util.List;
 128 import java.util.concurrent.atomic.AtomicInteger;
 129
 130 /**
 131  * Default launcher application.
 132  */
 133 public class Launcher extends Activity
 134         implements View.OnClickListener, OnLongClickListener, LauncherModel.Callbacks,
 135                    View.OnTouchListener, PageSwitchListener, LauncherProviderChangeListener,
 136                    LauncherStateTransitionAnimation.Callbacks {
 137     static final String TAG = "Launcher";
 138     static final boolean LOGD = false;
 139
 140     static final boolean PROFILE_STARTUP = false;
 141     static final boolean DEBUG_WIDGETS = true;
 142     static final boolean DEBUG_STRICT_MODE = false;
 143     static final boolean DEBUG_RESUME_TIME = false;
 144     static final boolean DEBUG_DUMP_LOG = false;
 145
 146     static final boolean ENABLE_DEBUG_INTENTS = false; // allow DebugIntents to run
 147
 148     private static final int REQUEST_CREATE_SHORTCUT = 1;
 149     private static final int REQUEST_CREATE_APPWIDGET = 5;
 150     private static final int REQUEST_PICK_APPWIDGET = 9;
 151     private static final int REQUEST_PICK_WALLPAPER = 10;
 152
 153     private static final int REQUEST_BIND_APPWIDGET = 11;
 154     private static final int REQUEST_RECONFIGURE_APPWIDGET = 12;
 155
 156     private static final int WORKSPACE_BACKGROUND_GRADIENT = 0;
 157     private static final int WORKSPACE_BACKGROUND_TRANSPARENT = 1;
 158     private static final int WORKSPACE_BACKGROUND_BLACK = 2;
 159
 160     private static final float BOUNCE_ANIMATION_TENSION = 1.3f;
 161
 162     /**
 163      * IntentStarter uses request codes starting with this. This must be greater than all activity
 164      * request codes used internally.
 165      */
 166     protected static final int REQUEST_LAST = 100;
 167
 168     static final int SCREEN_COUNT = 5;
 169
 170     // To turn on these properties, type
 171     // adb shell setprop log.tag.PROPERTY_NAME [VERBOSE | SUPPRESS]
 172     static final String DUMP_STATE_PROPERTY = "launcher_dump_state";
 173
 174     // The Intent extra that defines whether to ignore the launch animation
 175     static final String INTENT_EXTRA_IGNORE_LAUNCH_ANIMATION =
 176             "com.android.launcher3.intent.extra.shortcut.INGORE_LAUNCH_ANIMATION";
 177
 178     // Type: int
 179     private static final String RUNTIME_STATE_CURRENT_SCREEN = "launcher.current_screen";
 180     // Type: int
 181     private static final String RUNTIME_STATE = "launcher.state";
 182     // Type: int
 183     private static final String RUNTIME_STATE_PENDING_ADD_CONTAINER = "launcher.add_container";
 184     // Type: int
 185     private static final String RUNTIME_STATE_PENDING_ADD_SCREEN = "launcher.add_screen";
 186     // Type: int
 187     private static final String RUNTIME_STATE_PENDING_ADD_CELL_X = "launcher.add_cell_x";
 188     // Type: int
 189     private static final String RUNTIME_STATE_PENDING_ADD_CELL_Y = "launcher.add_cell_y";
 190     // Type: int
 191     private static final String RUNTIME_STATE_PENDING_ADD_SPAN_X = "launcher.add_span_x";
 192     // Type: int
 193     private static final String RUNTIME_STATE_PENDING_ADD_SPAN_Y = "launcher.add_span_y";
 194     // Type: parcelable
 195     private static final String RUNTIME_STATE_PENDING_ADD_WIDGET_INFO = "launcher.add_widget_info";
 196     // Type: parcelable
 197     private static final String RUNTIME_STATE_PENDING_ADD_WIDGET_ID = "launcher.add_widget_id";
 198     // Type: int[]
 199     private static final String RUNTIME_STATE_VIEW_IDS = "launcher.view_ids";
 200
 201     static final String INTRO_SCREEN_DISMISSED = "launcher.intro_screen_dismissed";
 202     static final String FIRST_RUN_ACTIVITY_DISPLAYED = "launcher.first_run_activity_displayed";
 203
 204     static final String FIRST_LOAD_COMPLETE = "launcher.first_load_complete";
 205     static final String ACTION_FIRST_LOAD_COMPLETE =
 206             "com.android.launcher3.action.FIRST_LOAD_COMPLETE";
 207
 208     public static final String SHOW_WEIGHT_WATCHER = "debug.show_mem";
 209     public static final boolean SHOW_WEIGHT_WATCHER_DEFAULT = false;
 210
 211     private static final String QSB_WIDGET_ID = "qsb_widget_id";
 212     private static final String QSB_WIDGET_PROVIDER = "qsb_widget_provider";
 213
 214     public static final String USER_HAS_MIGRATED = "launcher.user_migrated_from_old_data";
 215
 216     /** The different states that Launcher can be in. */
 217     enum State { NONE, WORKSPACE, APPS, APPS_SPRING_LOADED, WIDGETS, WIDGETS_SPRING_LOADED }
 218
 219     @Thunk State mState = State.WORKSPACE;
 220     @Thunk LauncherStateTransitionAnimation mStateTransitionAnimation;
 221
 222     private boolean mIsSafeModeEnabled;
 223
 224     LauncherOverlayCallbacks mLauncherOverlayCallbacks = new LauncherOverlayCallbacksImpl();
 225     LauncherOverlay mLauncherOverlay;
 226     InsettableFrameLayout mLauncherOverlayContainer;
 227
 228     static final int APPWIDGET_HOST_ID = 1024;
 229     public static final int EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT = 300;
 230     private static final int ON_ACTIVITY_RESULT_ANIMATION_DELAY = 500;
 231     private static final int ACTIVITY_START_DELAY = 1000;
 232
 233     private HashMap<Integer, Integer> mItemIdToViewId = new HashMap<Integer, Integer>();
 234     private static final AtomicInteger sNextGeneratedId = new AtomicInteger(1);
 235
 236     // How long to wait before the new-shortcut animation automatically pans the workspace
 237     private static int NEW_APPS_PAGE_MOVE_DELAY = 500;
 238     private static int NEW_APPS_ANIMATION_INACTIVE_TIMEOUT_SECONDS = 5;
 239     @Thunk static int NEW_APPS_ANIMATION_DELAY = 500;
 240
 241     private final BroadcastReceiver mCloseSystemDialogsReceiver
 242             = new CloseSystemDialogsIntentReceiver();
 243
 244     private LayoutInflater mInflater;
 245
 246     @Thunk Workspace mWorkspace;
 247     private View mLauncherView;
 248     private View mPageIndicators;
 249     @Thunk DragLayer mDragLayer;
 250     private DragController mDragController;
 251     private View mWeightWatcher;
 252
 253     private AppWidgetManagerCompat mAppWidgetManager;
 254     private LauncherAppWidgetHost mAppWidgetHost;
 255
 256     @Thunk ItemInfo mPendingAddInfo = new ItemInfo();
 257     private LauncherAppWidgetProviderInfo mPendingAddWidgetInfo;
 258     private int mPendingAddWidgetId = -1;
 259
 260     private int[] mTmpAddItemCellCoordinates = new int[2];
 261
 262     @Thunk Hotseat mHotseat;
 263     private ViewGroup mOverviewPanel;
 264
 265     private View mAllAppsButton;
 266
 267     private SearchDropTargetBar mSearchDropTargetBar;
 268
 269     // Main container view for the all apps screen.
 270     @Thunk AllAppsContainerView mAppsView;
 271
 272     // Main container view and the model for the widget tray screen.
 273     @Thunk WidgetsContainerView mWidgetsView;
 274     @Thunk WidgetsModel mWidgetsModel;
 275
 276     private boolean mAutoAdvanceRunning = false;
 277     private AppWidgetHostView mQsb;
 278
 279     private Bundle mSavedState;
 280     // We set the state in both onCreate and then onNewIntent in some cases, which causes both
 281     // scroll issues (because the workspace may not have been measured yet) and extra work.
 282     // Instead, just save the state that we need to restore Launcher to, and commit it in onResume.
 283     private State mOnResumeState = State.NONE;
 284
 285     private SpannableStringBuilder mDefaultKeySsb = null;
 286
 287     @Thunk boolean mWorkspaceLoading = true;
 288
 289     private boolean mPaused = true;
 290     private boolean mRestoring;
 291     private boolean mWaitingForResult;
 292     private boolean mOnResumeNeedsLoad;
 293
 294     private ArrayList<Runnable> mBindOnResumeCallbacks = new ArrayList<Runnable>();
 295     private ArrayList<Runnable> mOnResumeCallbacks = new ArrayList<Runnable>();
 296
 297     private Bundle mSavedInstanceState;
 298
 299     private LauncherModel mModel;
 300     private IconCache mIconCache;
 301     @Thunk boolean mUserPresent = true;
 302     private boolean mVisible = false;
 303     private boolean mHasFocus = false;
 304     private boolean mAttached = false;
 305
 306     private static LongArrayMap<FolderInfo> sFolders = new LongArrayMap<>();
 307
 308     private View.OnTouchListener mHapticFeedbackTouchListener;
 309
 310     // Related to the auto-advancing of widgets
 311     private final int ADVANCE_MSG = 1;
 312     private final int mAdvanceInterval = 20000;
 313     private final int mAdvanceStagger = 250;
 314     private long mAutoAdvanceSentTime;
 315     private long mAutoAdvanceTimeLeft = -1;
 316     @Thunk HashMap<View, AppWidgetProviderInfo> mWidgetsToAdvance =
 317         new HashMap<View, AppWidgetProviderInfo>();
 318
 319     // Determines how long to wait after a rotation before restoring the screen orientation to
 320     // match the sensor state.
 321     private final int mRestoreScreenOrientationDelay = 500;
 322
 323     @Thunk Drawable mWorkspaceBackgroundDrawable;
 324
 325     private final ArrayList<Integer> mSynchronouslyBoundPages = new ArrayList<Integer>();
 326     private static final boolean DISABLE_SYNCHRONOUS_BINDING_CURRENT_PAGE = false;
 327
 328     static final ArrayList<String> sDumpLogs = new ArrayList<String>();
 329     static Date sDateStamp = new Date();
 330     static DateFormat sDateFormat =
 331             DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT);
 332     static long sRunStart = System.currentTimeMillis();
 333     static final String CORRUPTION_EMAIL_SENT_KEY = "corruptionEmailSent";
 334
 335     // We only want to get the SharedPreferences once since it does an FS stat each time we get
 336     // it from the context.
 337     private SharedPreferences mSharedPrefs;
 338
 339     // Holds the page that we need to animate to, and the icon views that we need to animate up
 340     // when we scroll to that page on resume.
 341     @Thunk ImageView mFolderIconImageView;
 342     private Bitmap mFolderIconBitmap;
 343     private Canvas mFolderIconCanvas;
 344     private Rect mRectForFolderAnimation = new Rect();
 345
 346     private DeviceProfile mDeviceProfile;
 347
 348     // This is set to the view that launched the activity that navigated the user away from
 349     // launcher. Since there is no callback for when the activity has finished launching, enable
 350     // the press state and keep this reference to reset the press state when we return to launcher.
 351     private BubbleTextView mWaitingForResume;
 352
 353     protected static HashMap<String, CustomAppWidget> sCustomAppWidgets =
 354             new HashMap<String, CustomAppWidget>();
 355
 356     private static final boolean ENABLE_CUSTOM_WIDGET_TEST = false;
 357     static {
 358         if (ENABLE_CUSTOM_WIDGET_TEST) {
 359             sCustomAppWidgets.put(DummyWidget.class.getName(), new DummyWidget());
 360         }
 361     }
 362
 363     // TODO: remove this field and call method directly when Launcher3 can depend on M APIs
 364     private static Method sClipRevealMethod = null;
 365     static {
 366         Class<?> activityOptionsClass = ActivityOptions.class;
 367         try {
 368             sClipRevealMethod = activityOptionsClass.getDeclaredMethod("makeClipRevealAnimation",
 369                     View.class, int.class, int.class, int.class, int.class);
 370         } catch (Exception e) {
 371             // Earlier version
 372         }
 373     }
 374
 375     @Thunk Runnable mBuildLayersRunnable = new Runnable() {
 376         public void run() {
 377             if (mWorkspace != null) {
 378                 mWorkspace.buildPageHardwareLayers();
 379             }
 380         }
 381     };
 382
 383     private static PendingAddArguments sPendingAddItem;
 384
 385     @Thunk static class PendingAddArguments {
 386         int requestCode;
 387         Intent intent;
 388         long container;
 389         long screenId;
 390         int cellX;
 391         int cellY;
 392         int appWidgetId;
 393     }
 394
 395     private Stats mStats;
 396     FocusIndicatorView mFocusHandler;
 397     private boolean mRotationEnabled = false;
 398
 399     @Thunk void setOrientation() {
 400         if (mRotationEnabled) {
 401             unlockScreenOrientation(true);
 402         } else {
 403             setRequestedOrientation(
 404                     ActivityInfo.SCREEN_ORIENTATION_NOSENSOR);
 405         }
 406     }
 407
 408     private Runnable mUpdateOrientationRunnable = new Runnable() {
 409         public void run() {
 410             setOrientation();
 411         }
 412     };
 413
 414     @Override
 415     protected void onCreate(Bundle savedInstanceState) {
 416         if (DEBUG_STRICT_MODE) {
 417             StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
 418                     .detectDiskReads()
 419                     .detectDiskWrites()
 420                     .detectNetwork()   // or .detectAll() for all detectable problems
 421                     .penaltyLog()
 422                     .build());
 423             StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()
 424                     .detectLeakedSqlLiteObjects()
 425                     .detectLeakedClosableObjects()
 426                     .penaltyLog()
 427                     .penaltyDeath()
 428                     .build());
 429         }
 430
 431         if (mLauncherCallbacks != null) {
 432             mLauncherCallbacks.preOnCreate();
 433         }
 434
 435         super.onCreate(savedInstanceState);
 436
 437         LauncherAppState.setApplicationContext(getApplicationContext());
 438         LauncherAppState app = LauncherAppState.getInstance();
 439
 440         // Load configuration-specific DeviceProfile
 441         mDeviceProfile = getResources().getConfiguration().orientation
 442                 == Configuration.ORIENTATION_LANDSCAPE ?
 443                         app.getInvariantDeviceProfile().landscapeProfile
 444                             : app.getInvariantDeviceProfile().portraitProfile;
 445
 446         mSharedPrefs = getSharedPreferences(LauncherAppState.getSharedPreferencesKey(),
 447                 Context.MODE_PRIVATE);
 448         mIsSafeModeEnabled = getPackageManager().isSafeMode();
 449         mModel = app.setLauncher(this);
 450         mIconCache = app.getIconCache();
 451
 452         mDragController = new DragController(this);
 453         mInflater = getLayoutInflater();
 454         mStateTransitionAnimation = new LauncherStateTransitionAnimation(this, this);
 455
 456         mStats = new Stats(this);
 457
 458         mAppWidgetManager = AppWidgetManagerCompat.getInstance(this);
 459
 460         mAppWidgetHost = new LauncherAppWidgetHost(this, APPWIDGET_HOST_ID);
 461         mAppWidgetHost.startListening();
 462
 463         // If we are getting an onCreate, we can actually preempt onResume and unset mPaused here,
 464         // this also ensures that any synchronous binding below doesn't re-trigger another
 465         // LauncherModel load.
 466         mPaused = false;
 467
 468         if (PROFILE_STARTUP) {
 469             android.os.Debug.startMethodTracing(
 470                     Environment.getExternalStorageDirectory() + "/launcher");
 471         }
 472
 473         setContentView(R.layout.launcher);
 474
 475         setupViews();
 476         mDeviceProfile.layout(this);
 477
 478         lockAllApps();
 479
 480         mSavedState = savedInstanceState;
 481         restoreState(mSavedState);
 482
 483         if (PROFILE_STARTUP) {
 484             android.os.Debug.stopMethodTracing();
 485         }
 486
 487         if (!mRestoring) {
 488             if (DISABLE_SYNCHRONOUS_BINDING_CURRENT_PAGE) {
 489                 // If the user leaves launcher, then we should just load items asynchronously when
 490                 // they return.
 491                 mModel.startLoader(PagedView.INVALID_RESTORE_PAGE);
 492             } else {
 493                 // We only load the page synchronously if the user rotates (or triggers a
 494                 // configuration change) while launcher is in the foreground
 495                 mModel.startLoader(mWorkspace.getRestorePage());
 496             }
 497         }
 498
 499         // For handling default keys
 500         mDefaultKeySsb = new SpannableStringBuilder();
 501         Selection.setSelection(mDefaultKeySsb, 0);
 502
 503         IntentFilter filter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
 504         registerReceiver(mCloseSystemDialogsReceiver, filter);
 505
 506         mRotationEnabled = Utilities.isRotationAllowedForDevice(getApplicationContext());
 507         // In case we are on a device with locked rotation, we should look at preferences to check
 508         // if the user has specifically allowed rotation.
 509         if (!mRotationEnabled) {
 510             mRotationEnabled = Utilities.isAllowRotationPrefEnabled(getApplicationContext(), false);
 511         }
 512
 513         // On large interfaces, or on devices that a user has specifically enabled screen rotation,
 514         // we want the screen to auto-rotate based on the current orientation
 515         setOrientation();
 516
 517         if (mLauncherCallbacks != null) {
 518             mLauncherCallbacks.onCreate(savedInstanceState);
 519             if (mLauncherCallbacks.hasLauncherOverlay()) {
 520                 ViewStub stub = (ViewStub) findViewById(R.id.launcher_overlay_stub);
 521                 mLauncherOverlayContainer = (InsettableFrameLayout) stub.inflate();
 522                 mLauncherOverlay = mLauncherCallbacks.setLauncherOverlayView(
 523                         mLauncherOverlayContainer, mLauncherOverlayCallbacks);
 524                 mWorkspace.setLauncherOverlay(mLauncherOverlay);
 525             }
 526         }
 527
 528         if (shouldShowIntroScreen()) {
 529             showIntroScreen();
 530         } else {
 531             showFirstRunActivity();
 532             showFirstRunClings();
 533         }
 534     }
 535
 536     @Override
 537     public void onSettingsChanged(String settings, boolean value) {
 538         if (Utilities.ALLOW_ROTATION_PREFERENCE_KEY.equals(settings)) {
 539             mRotationEnabled = value;
 540             if (!waitUntilResume(mUpdateOrientationRunnable, true)) {
 541                 mUpdateOrientationRunnable.run();
 542             }
 543         }
 544     }
 545
 546     private LauncherCallbacks mLauncherCallbacks;
 547
 548     public void onPostCreate(Bundle savedInstanceState) {
 549         super.onPostCreate(savedInstanceState);
 550         if (mLauncherCallbacks != null) {
 551             mLauncherCallbacks.onPostCreate(savedInstanceState);
 552         }
 553     }
 554
 555     public boolean setLauncherCallbacks(LauncherCallbacks callbacks) {
 556         mLauncherCallbacks = callbacks;
 557         mLauncherCallbacks.setLauncherSearchCallback(new Launcher.LauncherSearchCallbacks() {
 558             private boolean mWorkspaceImportanceStored = false;
 559             private boolean mHotseatImportanceStored = false;
 560             private int mWorkspaceImportanceForAccessibility =
 561                 View.IMPORTANT_FOR_ACCESSIBILITY_AUTO;
 562             private int mHotseatImportanceForAccessibility = View.IMPORTANT_FOR_ACCESSIBILITY_AUTO;
 563
 564             @Override
 565             public void onSearchOverlayOpened() {
 566                 if (mWorkspaceImportanceStored || mHotseatImportanceStored) {
 567                     return;
 568                 }
 569                 // The underlying workspace and hotseat are temporarily suppressed by the search
 570                 // overlay. So they sholudn't be accessible.
 571                 if (mWorkspace != null) {
 572                     mWorkspaceImportanceForAccessibility =
 573                             mWorkspace.getImportantForAccessibility();
 574                     mWorkspace.setImportantForAccessibility(
 575                             View.IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS);
 576                     mWorkspaceImportanceStored = true;
 577                 }
 578                 if (mHotseat != null) {
 579                     mHotseatImportanceForAccessibility = mHotseat.getImportantForAccessibility();
 580                     mHotseat.setImportantForAccessibility(
 581                             View.IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS);
 582                     mHotseatImportanceStored = true;
 583                 }
 584             }
 585
 586             @Override
 587             public void onSearchOverlayClosed() {
 588                 if (mWorkspaceImportanceStored && mWorkspace != null) {
 589                     mWorkspace.setImportantForAccessibility(mWorkspaceImportanceForAccessibility);
 590                 }
 591                 if (mHotseatImportanceStored && mHotseat != null) {
 592                     mHotseat.setImportantForAccessibility(mHotseatImportanceForAccessibility);
 593                 }
 594                 mWorkspaceImportanceStored = false;
 595                 mHotseatImportanceStored = false;
 596             }
 597         });
 598         return true;
 599     }
 600
 601     @Override
 602     public void onLauncherProviderChange() {
 603         if (mLauncherCallbacks != null) {
 604             mLauncherCallbacks.onLauncherProviderChange();
 605         }
 606     }
 607
 608     /**
 609      * Updates the bounds of all the overlays to match the new fixed bounds.
 610      */
 611     public void updateOverlayBounds(Rect newBounds) {
 612         mAppsView.setSearchBarBounds(newBounds);
 613         mWidgetsView.setSearchBarBounds(newBounds);
 614     }
 615
 616     /** To be overridden by subclasses to hint to Launcher that we have custom content */
 617     protected boolean hasCustomContentToLeft() {
 618         if (mLauncherCallbacks != null) {
 619             return mLauncherCallbacks.hasCustomContentToLeft();
 620         }
 621         return false;
 622     }
 623
 624     /**
 625      * To be overridden by subclasses to populate the custom content container and call
 626      * {@link #addToCustomContentPage}. This will only be invoked if
 627      * {@link #hasCustomContentToLeft()} is {@code true}.
 628      */
 629     protected void populateCustomContentContainer() {
 630         if (mLauncherCallbacks != null) {
 631             mLauncherCallbacks.populateCustomContentContainer();
 632         }
 633     }
 634
 635     /**
 636      * Invoked by subclasses to signal a change to the {@link #addCustomContentToLeft} value to
 637      * ensure the custom content page is added or removed if necessary.
 638      */
 639     protected void invalidateHasCustomContentToLeft() {
 640         if (mWorkspace == null || mWorkspace.getScreenOrder().isEmpty()) {
 641             // Not bound yet, wait for bindScreens to be called.
 642             return;
 643         }
 644
 645         if (!mWorkspace.hasCustomContent() && hasCustomContentToLeft()) {
 646             // Create the custom content page and call the subclass to populate it.
 647             mWorkspace.createCustomContentContainer();
 648             populateCustomContentContainer();
 649         } else if (mWorkspace.hasCustomContent() && !hasCustomContentToLeft()) {
 650             mWorkspace.removeCustomContentPage();
 651         }
 652     }
 653
 654     public Stats getStats() {
 655         return mStats;
 656     }
 657
 658     public LayoutInflater getInflater() {
 659         return mInflater;
 660     }
 661
 662     public boolean isDraggingEnabled() {
 663         // We prevent dragging when we are loading the workspace as it is possible to pick up a view
 664         // that is subsequently removed from the workspace in startBinding().
 665         return !mModel.isLoadingWorkspace();
 666     }
 667
 668     @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
 669     public static int generateViewId() {
 670         if (Build.VERSION.SDK_INT >= 17) {
 671             return View.generateViewId();
 672         } else {
 673             // View.generateViewId() is not available. The following fallback logic is a copy
 674             // of its implementation.
 675             for (;;) {
 676                 final int result = sNextGeneratedId.get();
 677                 // aapt-generated IDs have the high byte nonzero; clamp to the range under that.
 678                 int newValue = result + 1;
 679                 if (newValue > 0x00FFFFFF) newValue = 1; // Roll over to 1, not 0.
 680                 if (sNextGeneratedId.compareAndSet(result, newValue)) {
 681                     return result;
 682                 }
 683             }
 684         }
 685     }
 686
 687     public int getViewIdForItem(ItemInfo info) {
 688         // This cast is safe given the > 2B range for int.
 689         int itemId = (int) info.id;
 690         if (mItemIdToViewId.containsKey(itemId)) {
 691             return mItemIdToViewId.get(itemId);
 692         }
 693         int viewId = generateViewId();
 694         mItemIdToViewId.put(itemId, viewId);
 695         return viewId;
 696     }
 697
 698     /**
 699      * Returns whether we should delay spring loaded mode -- for shortcuts and widgets that have
 700      * a configuration step, this allows the proper animations to run after other transitions.
 701      */
 702     private long completeAdd(PendingAddArguments args) {
 703         long screenId = args.screenId;
 704         if (args.container == LauncherSettings.Favorites.CONTAINER_DESKTOP) {
 705             // When the screen id represents an actual screen (as opposed to a rank) we make sure
 706             // that the drop page actually exists.
 707             screenId = ensurePendingDropLayoutExists(args.screenId);
 708         }
 709
 710         switch (args.requestCode) {
 711             case REQUEST_CREATE_SHORTCUT:
 712                 completeAddShortcut(args.intent, args.container, screenId, args.cellX,
 713                         args.cellY);
 714                 break;
 715             case REQUEST_CREATE_APPWIDGET:
 716                 completeAddAppWidget(args.appWidgetId, args.container, screenId, null, null);
 717                 break;
 718             case REQUEST_RECONFIGURE_APPWIDGET:
 719                 completeRestoreAppWidget(args.appWidgetId);
 720                 break;
 721         }
 722         // Before adding this resetAddInfo(), after a shortcut was added to a workspace screen,
 723         // if you turned the screen off and then back while in All Apps, Launcher would not
 724         // return to the workspace. Clearing mAddInfo.container here fixes this issue
 725         resetAddInfo();
 726         return screenId;
 727     }
 728
 729     private void handleActivityResult(
 730             final int requestCode, final int resultCode, final Intent data) {
 731         // Reset the startActivity waiting flag
 732         setWaitingForResult(false);
 733         final int pendingAddWidgetId = mPendingAddWidgetId;
 734         mPendingAddWidgetId = -1;
 735
 736         Runnable exitSpringLoaded = new Runnable() {
 737             @Override
 738             public void run() {
 739                 exitSpringLoadedDragModeDelayed((resultCode != RESULT_CANCELED),
 740                         EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null);
 741             }
 742         };
 743
 744         if (requestCode == REQUEST_BIND_APPWIDGET) {
 745             final int appWidgetId = data != null ?
 746                     data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1) : -1;
 747             if (resultCode == RESULT_CANCELED) {
 748                 completeTwoStageWidgetDrop(RESULT_CANCELED, appWidgetId);
 749                 mWorkspace.removeExtraEmptyScreenDelayed(true, exitSpringLoaded,
 750                         ON_ACTIVITY_RESULT_ANIMATION_DELAY, false);
 751             } else if (resultCode == RESULT_OK) {
 752                 addAppWidgetImpl(appWidgetId, mPendingAddInfo, null,
 753                         mPendingAddWidgetInfo, ON_ACTIVITY_RESULT_ANIMATION_DELAY);
 754             }
 755             return;
 756         } else if (requestCode == REQUEST_PICK_WALLPAPER) {
 757             if (resultCode == RESULT_OK && mWorkspace.isInOverviewMode()) {
 758                 showWorkspace(false);
 759             }
 760             return;
 761         }
 762
 763         boolean isWidgetDrop = (requestCode == REQUEST_PICK_APPWIDGET ||
 764                 requestCode == REQUEST_CREATE_APPWIDGET);
 765
 766         final boolean workspaceLocked = isWorkspaceLocked();
 767         // We have special handling for widgets
 768         if (isWidgetDrop) {
 769             final int appWidgetId;
 770             int widgetId = data != null ? data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1)
 771                     : -1;
 772             if (widgetId < 0) {
 773                 appWidgetId = pendingAddWidgetId;
 774             } else {
 775                 appWidgetId = widgetId;
 776             }
 777
 778             final int result;
 779             if (appWidgetId < 0 || resultCode == RESULT_CANCELED) {
 780                 Log.e(TAG, "Error: appWidgetId (EXTRA_APPWIDGET_ID) was not " +
 781                         "returned from the widget configuration activity.");
 782                 result = RESULT_CANCELED;
 783                 completeTwoStageWidgetDrop(result, appWidgetId);
 784                 final Runnable onComplete = new Runnable() {
 785                     @Override
 786                     public void run() {
 787                         exitSpringLoadedDragModeDelayed(false, 0, null);
 788                     }
 789                 };
 790                 if (workspaceLocked) {
 791                     // No need to remove the empty screen if we're mid-binding, as the
 792                     // the bind will not add the empty screen.
 793                     mWorkspace.postDelayed(onComplete, ON_ACTIVITY_RESULT_ANIMATION_DELAY);
 794                 } else {
 795                     mWorkspace.removeExtraEmptyScreenDelayed(true, onComplete,
 796                             ON_ACTIVITY_RESULT_ANIMATION_DELAY, false);
 797                 }
 798             } else {
 799                 if (!workspaceLocked) {
 800                     if (mPendingAddInfo.container == LauncherSettings.Favorites.CONTAINER_DESKTOP) {
 801                         // When the screen id represents an actual screen (as opposed to a rank)
 802                         // we make sure that the drop page actually exists.
 803                         mPendingAddInfo.screenId =
 804                                 ensurePendingDropLayoutExists(mPendingAddInfo.screenId);
 805                     }
 806                     final CellLayout dropLayout = mWorkspace.getScreenWithId(mPendingAddInfo.screenId);
 807
 808                     dropLayout.setDropPending(true);
 809                     final Runnable onComplete = new Runnable() {
 810                         @Override
 811                         public void run() {
 812                             completeTwoStageWidgetDrop(resultCode, appWidgetId);
 813                             dropLayout.setDropPending(false);
 814                         }
 815                     };
 816                     mWorkspace.removeExtraEmptyScreenDelayed(true, onComplete,
 817                             ON_ACTIVITY_RESULT_ANIMATION_DELAY, false);
 818                 } else {
 819                     PendingAddArguments args = preparePendingAddArgs(requestCode, data, appWidgetId,
 820                             mPendingAddInfo);
 821                     sPendingAddItem = args;
 822                 }
 823             }
 824             return;
 825         }
 826
 827         if (requestCode == REQUEST_RECONFIGURE_APPWIDGET) {
 828             if (resultCode == RESULT_OK) {
 829                 // Update the widget view.
 830                 PendingAddArguments args = preparePendingAddArgs(requestCode, data,
 831                         pendingAddWidgetId, mPendingAddInfo);
 832                 if (workspaceLocked) {
 833                     sPendingAddItem = args;
 834                 } else {
 835                     completeAdd(args);
 836                 }
 837             }
 838             // Leave the widget in the pending state if the user canceled the configure.
 839             return;
 840         }
 841
 842         // The pattern used here is that a user PICKs a specific application,
 843         // which, depending on the target, might need to CREATE the actual target.
 844
 845         // For example, the user would PICK_SHORTCUT for "Music playlist", and we
 846         // launch over to the Music app to actually CREATE_SHORTCUT.
 847         if (resultCode == RESULT_OK && mPendingAddInfo.container != ItemInfo.NO_ID) {
 848             final PendingAddArguments args = preparePendingAddArgs(requestCode, data, -1,
 849                     mPendingAddInfo);
 850             if (isWorkspaceLocked()) {
 851                 sPendingAddItem = args;
 852             } else {
 853                 completeAdd(args);
 854                 mWorkspace.removeExtraEmptyScreenDelayed(true, exitSpringLoaded,
 855                         ON_ACTIVITY_RESULT_ANIMATION_DELAY, false);
 856             }
 857         } else if (resultCode == RESULT_CANCELED) {
 858             mWorkspace.removeExtraEmptyScreenDelayed(true, exitSpringLoaded,
 859                     ON_ACTIVITY_RESULT_ANIMATION_DELAY, false);
 860         }
 861         mDragLayer.clearAnimatedView();
 862
 863     }
 864
 865     @Override
 866     protected void onActivityResult(
 867             final int requestCode, final int resultCode, final Intent data) {
 868         handleActivityResult(requestCode, resultCode, data);
 869         if (mLauncherCallbacks != null) {
 870             mLauncherCallbacks.onActivityResult(requestCode, resultCode, data);
 871         }
 872     }
 873
 874     /** @Override for MNC */
 875     protected void onRequestPermissionsResult(int requestCode, String[] permissions,
 876             int[] grantResults) {
 877         if (mLauncherCallbacks != null) {
 878             mLauncherCallbacks.onRequestPermissionsResult(requestCode, permissions,
 879                     grantResults);
 880         }
 881     }
 882
 883     private PendingAddArguments preparePendingAddArgs(int requestCode, Intent data, int
 884             appWidgetId, ItemInfo info) {
 885         PendingAddArguments args = new PendingAddArguments();
 886         args.requestCode = requestCode;
 887         args.intent = data;
 888         args.container = info.container;
 889         args.screenId = info.screenId;
 890         args.cellX = info.cellX;
 891         args.cellY = info.cellY;
 892         args.appWidgetId = appWidgetId;
 893         return args;
 894     }
 895
 896     /**
 897      * Check to see if a given screen id exists. If not, create it at the end, return the new id.
 898      *
 899      * @param screenId the screen id to check
 900      * @return the new screen, or screenId if it exists
 901      */
 902     private long ensurePendingDropLayoutExists(long screenId) {
 903         CellLayout dropLayout =
 904                 (CellLayout) mWorkspace.getScreenWithId(screenId);
 905         if (dropLayout == null) {
 906             // it's possible that the add screen was removed because it was
 907             // empty and a re-bind occurred
 908             mWorkspace.addExtraEmptyScreen();
 909             return mWorkspace.commitExtraEmptyScreen();
 910         } else {
 911             return screenId;
 912         }
 913     }
 914
 915     @Thunk void completeTwoStageWidgetDrop(final int resultCode, final int appWidgetId) {
 916         CellLayout cellLayout =
 917                 (CellLayout) mWorkspace.getScreenWithId(mPendingAddInfo.screenId);
 918         Runnable onCompleteRunnable = null;
 919         int animationType = 0;
 920
 921         AppWidgetHostView boundWidget = null;
 922         if (resultCode == RESULT_OK) {
 923             animationType = Workspace.COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION;
 924             final AppWidgetHostView layout = mAppWidgetHost.createView(this, appWidgetId,
 925                     mPendingAddWidgetInfo);
 926             boundWidget = layout;
 927             onCompleteRunnable = new Runnable() {
 928                 @Override
 929                 public void run() {
 930                     completeAddAppWidget(appWidgetId, mPendingAddInfo.container,
 931                             mPendingAddInfo.screenId, layout, null);
 932                     exitSpringLoadedDragModeDelayed((resultCode != RESULT_CANCELED),
 933                             EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null);
 934                 }
 935             };
 936         } else if (resultCode == RESULT_CANCELED) {
 937             mAppWidgetHost.deleteAppWidgetId(appWidgetId);
 938             animationType = Workspace.CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION;
 939         }
 940         if (mDragLayer.getAnimatedView() != null) {
 941             mWorkspace.animateWidgetDrop(mPendingAddInfo, cellLayout,
 942                     (DragView) mDragLayer.getAnimatedView(), onCompleteRunnable,
 943                     animationType, boundWidget, true);
 944         } else if (onCompleteRunnable != null) {
 945             // The animated view may be null in the case of a rotation during widget configuration
 946             onCompleteRunnable.run();
 947         }
 948     }
 949
 950     @Override
 951     protected void onStop() {
 952         super.onStop();
 953         FirstFrameAnimatorHelper.setIsVisible(false);
 954
 955         if (mLauncherCallbacks != null) {
 956             mLauncherCallbacks.onStop();
 957         }
 958     }
 959
 960     @Override
 961     protected void onStart() {
 962         super.onStart();
 963         FirstFrameAnimatorHelper.setIsVisible(true);
 964
 965         if (mLauncherCallbacks != null) {
 966             mLauncherCallbacks.onStart();
 967         }
 968     }
 969
 970     @Override
 971     protected void onResume() {
 972         long startTime = 0;
 973         if (DEBUG_RESUME_TIME) {
 974             startTime = System.currentTimeMillis();
 975             Log.v(TAG, "Launcher.onResume()");
 976         }
 977
 978         if (mLauncherCallbacks != null) {
 979             mLauncherCallbacks.preOnResume();
 980         }
 981
 982         super.onResume();
 983
 984         // Restore the previous launcher state
 985         if (mOnResumeState == State.WORKSPACE) {
 986             showWorkspace(false);
 987         } else if (mOnResumeState == State.APPS) {
 988             boolean launchedFromApp = (mWaitingForResume != null);
 989             // Don't update the predicted apps if the user is returning to launcher in the apps
 990             // view after launching an app, as they may be depending on the UI to be static to
 991             // switch to another app, otherwise, if it was
 992             showAppsView(false /* animated */, false /* resetListToTop */,
 993                     !launchedFromApp /* updatePredictedApps */);
 994         } else if (mOnResumeState == State.WIDGETS) {
 995             showWidgetsView(false, false);
 996         }
 997         mOnResumeState = State.NONE;
 998
 999         // Background was set to gradient in onPause(), restore to transparent if in all apps.
1000         setWorkspaceBackground(mState == State.WORKSPACE ? WORKSPACE_BACKGROUND_GRADIENT
1001                 : WORKSPACE_BACKGROUND_TRANSPARENT);
1002
1003         mPaused = false;
1004         if (mRestoring || mOnResumeNeedsLoad) {
1005             setWorkspaceLoading(true);
1006             mModel.startLoader(PagedView.INVALID_RESTORE_PAGE);
1007             mRestoring = false;
1008             mOnResumeNeedsLoad = false;
1009         }
1010         if (mBindOnResumeCallbacks.size() > 0) {
1011             // We might have postponed some bind calls until onResume (see waitUntilResume) --
1012             // execute them here
1013             long startTimeCallbacks = 0;
1014             if (DEBUG_RESUME_TIME) {
1015                 startTimeCallbacks = System.currentTimeMillis();
1016             }
1017
1018             for (int i = 0; i < mBindOnResumeCallbacks.size(); i++) {
1019                 mBindOnResumeCallbacks.get(i).run();
1020             }
1021             mBindOnResumeCallbacks.clear();
1022             if (DEBUG_RESUME_TIME) {
1023                 Log.d(TAG, "Time spent processing callbacks in onResume: " +
1024                     (System.currentTimeMillis() - startTimeCallbacks));
1025             }
1026         }
1027         if (mOnResumeCallbacks.size() > 0) {
1028             for (int i = 0; i < mOnResumeCallbacks.size(); i++) {
1029                 mOnResumeCallbacks.get(i).run();
1030             }
1031             mOnResumeCallbacks.clear();
1032         }
1033
1034         // Reset the pressed state of icons that were locked in the press state while activities
1035         // were launching
1036         if (mWaitingForResume != null) {
1037             // Resets the previous workspace icon press state
1038             mWaitingForResume.setStayPressed(false);
1039         }
1040
1041         // It is possible that widgets can receive updates while launcher is not in the foreground.
1042         // Consequently, the widgets will be inflated in the orientation of the foreground activity
1043         // (framework issue). On resuming, we ensure that any widgets are inflated for the current
1044         // orientation.
1045         getWorkspace().reinflateWidgetsIfNecessary();
1046         reinflateQSBIfNecessary();
1047
1048         if (DEBUG_RESUME_TIME) {
1049             Log.d(TAG, "Time spent in onResume: " + (System.currentTimeMillis() - startTime));
1050         }
1051
1052         if (mWorkspace.getCustomContentCallbacks() != null) {
1053             // If we are resuming and the custom content is the current page, we call onShow().
1054             // It is also poassible that onShow will instead be called slightly after first layout
1055             // if PagedView#setRestorePage was set to the custom content page in onCreate().
1056             if (mWorkspace.isOnOrMovingToCustomContent()) {
1057                 mWorkspace.getCustomContentCallbacks().onShow(true);
1058             }
1059         }
1060         updateInteraction(Workspace.State.NORMAL, mWorkspace.getState());
1061         mWorkspace.onResume();
1062
1063         if (!isWorkspaceLoading()) {
1064             // Process any items that were added while Launcher was away.
1065             InstallShortcutReceiver.disableAndFlushInstallQueue(this);
1066         }
1067
1068         if (mLauncherCallbacks != null) {
1069             mLauncherCallbacks.onResume();
1070         }
1071     }
1072
1073     @Override
1074     protected void onPause() {
1075         // Ensure that items added to Launcher are queued until Launcher returns
1076         InstallShortcutReceiver.enableInstallQueue();
1077
1078         super.onPause();
1079         mPaused = true;
1080         mDragController.cancelDrag();
1081         mDragController.resetLastGestureUpTime();
1082
1083         // We call onHide() aggressively. The custom content callbacks should be able to
1084         // debounce excess onHide calls.
1085         if (mWorkspace.getCustomContentCallbacks() != null) {
1086             mWorkspace.getCustomContentCallbacks().onHide();
1087         }
1088
1089         if (mLauncherCallbacks != null) {
1090             mLauncherCallbacks.onPause();
1091         }
1092     }
1093
1094     public interface CustomContentCallbacks {
1095         // Custom content is completely shown. {@code fromResume} indicates whether this was caused
1096         // by a onResume or by scrolling otherwise.
1097         public void onShow(boolean fromResume);
1098
1099         // Custom content is completely hidden
1100         public void onHide();
1101
1102         // Custom content scroll progress changed. From 0 (not showing) to 1 (fully showing).
1103         public void onScrollProgressChanged(float progress);
1104
1105         // Indicates whether the user is allowed to scroll away from the custom content.
1106         boolean isScrollingAllowed();
1107     }
1108
1109     public interface LauncherOverlay {
1110
1111         /**
1112          * Touch interaction leading to overscroll has begun
1113          */
1114         public void onScrollInteractionBegin();
1115
1116         /**
1117          * Touch interaction related to overscroll has ended
1118          */
1119         public void onScrollInteractionEnd();
1120
1121         /**
1122          * Scroll progress, between 0 and 100, when the user scrolls beyond the leftmost
1123          * screen (or in the case of RTL, the rightmost screen).
1124          */
1125         public void onScrollChange(int progress, boolean rtl);
1126
1127         /**
1128          * Screen has stopped scrolling
1129          */
1130         public void onScrollSettled();
1131
1132         /**
1133          * This method can be called by the Launcher in order to force the LauncherOverlay
1134          * to exit fully immersive mode.
1135          */
1136         public void forceExitFullImmersion();
1137     }
1138
1139     public interface LauncherSearchCallbacks {
1140         /**
1141          * Called when the search overlay is shown.
1142          */
1143         public void onSearchOverlayOpened();
1144
1145         /**
1146          * Called when the search overlay is dismissed.
1147          */
1148         public void onSearchOverlayClosed();
1149     }
1150
1151     public interface LauncherOverlayCallbacks {
1152         /**
1153          * This method indicates whether a call to {@link #enterFullImmersion()} will succeed,
1154          * however it doesn't modify any state within the launcher.
1155          */
1156         public boolean canEnterFullImmersion();
1157
1158         /**
1159          * Should be called to tell Launcher that the LauncherOverlay will take over interaction,
1160          * eg. by occupying the full screen and handling all touch events.
1161          *
1162          * @return true if Launcher allows the LauncherOverlay to become fully immersive. In this
1163          *          case, Launcher will modify any necessary state and assumes the overlay is
1164          *          handling all interaction. If false, the LauncherOverlay should cancel any
1165          *
1166          */
1167         public boolean enterFullImmersion();
1168
1169         /**
1170          * Must be called when exiting fully immersive mode. Indicates to Launcher that it has
1171          * full control over UI and state.
1172          */
1173         public void exitFullImmersion();
1174     }
1175
1176     class LauncherOverlayCallbacksImpl implements LauncherOverlayCallbacks {
1177
1178         @Override
1179         public boolean canEnterFullImmersion() {
1180             return mState == State.WORKSPACE;
1181         }
1182
1183         @Override
1184         public boolean enterFullImmersion() {
1185             if (mState == State.WORKSPACE) {
1186                 // When fully immersed, disregard any touches which fall through.
1187                 mDragLayer.setBlockTouch(true);
1188                 return true;
1189             }
1190             return false;
1191         }
1192
1193         @Override
1194         public void exitFullImmersion() {
1195             mDragLayer.setBlockTouch(false);
1196         }
1197     }
1198
1199     protected boolean hasSettings() {
1200         if (mLauncherCallbacks != null) {
1201             return mLauncherCallbacks.hasSettings();
1202         } else {
1203             // On devices with a locked orientation, we will at least have the allow rotation
1204             // setting.
1205             return !Utilities.isRotationAllowedForDevice(this);
1206         }
1207     }
1208
1209     public void addToCustomContentPage(View customContent,
1210             CustomContentCallbacks callbacks, String description) {
1211         mWorkspace.addToCustomContentPage(customContent, callbacks, description);
1212     }
1213
1214     // The custom content needs to offset its content to account for the QSB
1215     public int getTopOffsetForCustomContent() {
1216         return mWorkspace.getPaddingTop();
1217     }
1218
1219     @Override
1220     public Object onRetainNonConfigurationInstance() {
1221         // Flag the loader to stop early before switching
1222         if (mModel.isCurrentCallbacks(this)) {
1223             mModel.stopLoader();
1224         }
1225         //TODO(hyunyoungs): stop the widgets loader when there is a rotation.
1226
1227         return Boolean.TRUE;
1228     }
1229
1230     // We can't hide the IME if it was forced open.  So don't bother
1231     @Override
1232     public void onWindowFocusChanged(boolean hasFocus) {
1233         super.onWindowFocusChanged(hasFocus);
1234         mHasFocus = hasFocus;
1235
1236         if (mLauncherCallbacks != null) {
1237             mLauncherCallbacks.onWindowFocusChanged(hasFocus);
1238         }
1239     }
1240
1241     private boolean acceptFilter() {
1242         final InputMethodManager inputManager = (InputMethodManager)
1243                 getSystemService(Context.INPUT_METHOD_SERVICE);
1244         return !inputManager.isFullscreenMode();
1245     }
1246
1247     @Override
1248     public boolean onKeyDown(int keyCode, KeyEvent event) {
1249         final int uniChar = event.getUnicodeChar();
1250         final boolean handled = super.onKeyDown(keyCode, event);
1251         final boolean isKeyNotWhitespace = uniChar > 0 && !Character.isWhitespace(uniChar);
1252         if (!handled && acceptFilter() && isKeyNotWhitespace) {
1253             boolean gotKey = TextKeyListener.getInstance().onKeyDown(mWorkspace, mDefaultKeySsb,
1254                     keyCode, event);
1255             if (gotKey && mDefaultKeySsb != null && mDefaultKeySsb.length() > 0) {
1256                 // something usable has been typed - start a search
1257                 // the typed text will be retrieved and cleared by
1258                 // showSearchDialog()
1259                 // If there are multiple keystrokes before the search dialog takes focus,
1260                 // onSearchRequested() will be called for every keystroke,
1261                 // but it is idempotent, so it's fine.
1262                 return onSearchRequested();
1263             }
1264         }
1265
1266         // Eat the long press event so the keyboard doesn't come up.
1267         if (keyCode == KeyEvent.KEYCODE_MENU && event.isLongPress()) {
1268             return true;
1269         }
1270
1271         return handled;
1272     }
1273
1274     private String getTypedText() {
1275         return mDefaultKeySsb.toString();
1276     }
1277
1278     private void clearTypedText() {
1279         mDefaultKeySsb.clear();
1280         mDefaultKeySsb.clearSpans();
1281         Selection.setSelection(mDefaultKeySsb, 0);
1282     }
1283
1284     /**
1285      * Given the integer (ordinal) value of a State enum instance, convert it to a variable of type
1286      * State
1287      */
1288     private static State intToState(int stateOrdinal) {
1289         State state = State.WORKSPACE;
1290         final State[] stateValues = State.values();
1291         for (int i = 0; i < stateValues.length; i++) {
1292             if (stateValues[i].ordinal() == stateOrdinal) {
1293                 state = stateValues[i];
1294                 break;
1295             }
1296         }
1297         return state;
1298     }
1299
1300     /**
1301      * Restores the previous state, if it exists.
1302      *
1303      * @param savedState The previous state.
1304      */
1305     @SuppressWarnings("unchecked")
1306     private void restoreState(Bundle savedState) {
1307         if (savedState == null) {
1308             return;
1309         }
1310
1311         State state = intToState(savedState.getInt(RUNTIME_STATE, State.WORKSPACE.ordinal()));
1312         if (state == State.APPS || state == State.WIDGETS) {
1313             mOnResumeState = state;
1314         }
1315
1316         int currentScreen = savedState.getInt(RUNTIME_STATE_CURRENT_SCREEN,
1317                 PagedView.INVALID_RESTORE_PAGE);
1318         if (currentScreen != PagedView.INVALID_RESTORE_PAGE) {
1319             mWorkspace.setRestorePage(currentScreen);
1320         }
1321
1322         final long pendingAddContainer = savedState.getLong(RUNTIME_STATE_PENDING_ADD_CONTAINER, -1);
1323         final long pendingAddScreen = savedState.getLong(RUNTIME_STATE_PENDING_ADD_SCREEN, -1);
1324
1325         if (pendingAddContainer != ItemInfo.NO_ID && pendingAddScreen > -1) {
1326             mPendingAddInfo.container = pendingAddContainer;
1327             mPendingAddInfo.screenId = pendingAddScreen;
1328             mPendingAddInfo.cellX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_X);
1329             mPendingAddInfo.cellY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_Y);
1330             mPendingAddInfo.spanX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_X);
1331             mPendingAddInfo.spanY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y);
1332             AppWidgetProviderInfo info = savedState.getParcelable(
1333                     RUNTIME_STATE_PENDING_ADD_WIDGET_INFO);
1334             mPendingAddWidgetInfo = info == null ?
1335                     null : LauncherAppWidgetProviderInfo.fromProviderInfo(this, info);
1336
1337             mPendingAddWidgetId = savedState.getInt(RUNTIME_STATE_PENDING_ADD_WIDGET_ID);
1338             setWaitingForResult(true);
1339             mRestoring = true;
1340         }
1341
1342         mItemIdToViewId = (HashMap<Integer, Integer>)
1343                 savedState.getSerializable(RUNTIME_STATE_VIEW_IDS);
1344     }
1345
1346     /**
1347      * Finds all the views we need and configure them properly.
1348      */
1349     private void setupViews() {
1350         final DragController dragController = mDragController;
1351
1352         mLauncherView = findViewById(R.id.launcher);
1353         mFocusHandler = (FocusIndicatorView) findViewById(R.id.focus_indicator);
1354         mDragLayer = (DragLayer) findViewById(R.id.drag_layer);
1355         mWorkspace = (Workspace) mDragLayer.findViewById(R.id.workspace);
1356         mWorkspace.setPageSwitchListener(this);
1357         mPageIndicators = mDragLayer.findViewById(R.id.page_indicator);
1358
1359         mLauncherView.setSystemUiVisibility(
1360                 View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
1361         mWorkspaceBackgroundDrawable = getResources().getDrawable(R.drawable.workspace_bg);
1362
1363         // Setup the drag layer
1364         mDragLayer.setup(this, dragController);
1365
1366         // Setup the hotseat
1367         mHotseat = (Hotseat) findViewById(R.id.hotseat);
1368         if (mHotseat != null) {
1369             mHotseat.setOnLongClickListener(this);
1370         }
1371
1372         mOverviewPanel = (ViewGroup) findViewById(R.id.overview_panel);
1373         View widgetButton = findViewById(R.id.widget_button);
1374         widgetButton.setOnClickListener(new OnClickListener() {
1375             @Override
1376             public void onClick(View arg0) {
1377                 if (!mWorkspace.isSwitchingState()) {
1378                     onClickAddWidgetButton(arg0);
1379                 }
1380             }
1381         });
1382         widgetButton.setOnTouchListener(getHapticFeedbackTouchListener());
1383
1384         View wallpaperButton = findViewById(R.id.wallpaper_button);
1385         wallpaperButton.setOnClickListener(new OnClickListener() {
1386             @Override
1387             public void onClick(View arg0) {
1388                 if (!mWorkspace.isSwitchingState()) {
1389                     onClickWallpaperPicker(arg0);
1390                 }
1391             }
1392         });
1393         wallpaperButton.setOnTouchListener(getHapticFeedbackTouchListener());
1394
1395         View settingsButton = findViewById(R.id.settings_button);
1396         if (hasSettings()) {
1397             settingsButton.setOnClickListener(new OnClickListener() {
1398                 @Override
1399                 public void onClick(View arg0) {
1400                     if (!mWorkspace.isSwitchingState()) {
1401                         onClickSettingsButton(arg0);
1402                     }
1403                 }
1404             });
1405             settingsButton.setOnTouchListener(getHapticFeedbackTouchListener());
1406         } else {
1407             settingsButton.setVisibility(View.GONE);
1408         }
1409
1410         mOverviewPanel.setAlpha(0f);
1411
1412         // Setup the workspace
1413         mWorkspace.setHapticFeedbackEnabled(false);
1414         mWorkspace.setOnLongClickListener(this);
1415         mWorkspace.setup(dragController);
1416         dragController.addDragListener(mWorkspace);
1417
1418         // Get the search/delete bar
1419         mSearchDropTargetBar = (SearchDropTargetBar)
1420                 mDragLayer.findViewById(R.id.search_drop_target_bar);
1421
1422         // Setup Apps and Widgets
1423         mAppsView = (AllAppsContainerView) findViewById(R.id.apps_view);
1424         mWidgetsView = (WidgetsContainerView) findViewById(R.id.widgets_view);
1425         if (mLauncherCallbacks != null && mLauncherCallbacks.getAllAppsSearchBarController() != null) {
1426             mAppsView.setSearchBarController(mLauncherCallbacks.getAllAppsSearchBarController());
1427         } else {
1428             mAppsView.setSearchBarController(mAppsView.newDefaultAppSearchController());
1429         }
1430
1431         // Setup the drag controller (drop targets have to be added in reverse order in priority)
1432         dragController.setDragScoller(mWorkspace);
1433         dragController.setScrollView(mDragLayer);
1434         dragController.setMoveTarget(mWorkspace);
1435         dragController.addDropTarget(mWorkspace);
1436         if (mSearchDropTargetBar != null) {
1437             mSearchDropTargetBar.setup(this, dragController);
1438             mSearchDropTargetBar.setQsbSearchBar(getOrCreateQsbBar());
1439         }
1440
1441         if (getResources().getBoolean(R.bool.debug_memory_enabled)) {
1442             Log.v(TAG, "adding WeightWatcher");
1443             mWeightWatcher = new WeightWatcher(this);
1444             mWeightWatcher.setAlpha(0.5f);
1445             ((FrameLayout) mLauncherView).addView(mWeightWatcher,
1446                     new FrameLayout.LayoutParams(
1447                             FrameLayout.LayoutParams.MATCH_PARENT,
1448                             FrameLayout.LayoutParams.WRAP_CONTENT,
1449                             Gravity.BOTTOM)
1450             );
1451
1452             boolean show = shouldShowWeightWatcher();
1453             mWeightWatcher.setVisibility(show ? View.VISIBLE : View.GONE);
1454         }
1455     }
1456
1457     /**
1458      * Sets the all apps button. This method is called from {@link Hotseat}.
1459      */
1460     public void setAllAppsButton(View allAppsButton) {
1461         mAllAppsButton = allAppsButton;
1462     }
1463
1464     public View getAllAppsButton() {
1465         return mAllAppsButton;
1466     }
1467
1468     /**
1469      * Creates a view representing a shortcut.
1470      *
1471      * @param info The data structure describing the shortcut.
1472      */
1473     View createShortcut(ShortcutInfo info) {
1474         return createShortcut((ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentPage()), info);
1475     }
1476
1477     /**
1478      * Creates a view representing a shortcut inflated from the specified resource.
1479      *
1480      * @param parent The group the shortcut belongs to.
1481      * @param info The data structure describing the shortcut.
1482      *
1483      * @return A View inflated from layoutResId.
1484      */
1485     public View createShortcut(ViewGroup parent, ShortcutInfo info) {
1486         BubbleTextView favorite = (BubbleTextView) mInflater.inflate(R.layout.app_icon,
1487                 parent, false);
1488         favorite.applyFromShortcutInfo(info, mIconCache);
1489         favorite.setCompoundDrawablePadding(mDeviceProfile.iconDrawablePaddingPx);
1490         favorite.setOnClickListener(this);
1491         favorite.setOnFocusChangeListener(mFocusHandler);
1492         return favorite;
1493     }
1494
1495     /**
1496      * Add a shortcut to the workspace.
1497      *
1498      * @param data The intent describing the shortcut.
1499      */
1500     private void completeAddShortcut(Intent data, long container, long screenId, int cellX,
1501             int cellY) {
1502         int[] cellXY = mTmpAddItemCellCoordinates;
1503         int[] touchXY = mPendingAddInfo.dropPos;
1504         CellLayout layout = getCellLayout(container, screenId);
1505
1506         ShortcutInfo info = InstallShortcutReceiver.fromShortcutIntent(this, data);
1507         if (info == null) {
1508             return;
1509         }
1510         final View view = createShortcut(info);
1511
1512         boolean foundCellSpan = false;
1513         // First we check if we already know the exact location where we want to add this item.
1514         if (cellX >= 0 && cellY >= 0) {
1515             cellXY[0] = cellX;
1516             cellXY[1] = cellY;
1517             foundCellSpan = true;
1518
1519             // If appropriate, either create a folder or add to an existing folder
1520             if (mWorkspace.createUserFolderIfNecessary(view, container, layout, cellXY, 0,
1521                     true, null,null)) {
1522                 return;
1523             }
1524             DragObject dragObject = new DragObject();
1525             dragObject.dragInfo = info;
1526             if (mWorkspace.addToExistingFolderIfNecessary(view, layout, cellXY, 0, dragObject,
1527                     true)) {
1528                 return;
1529             }
1530         } else if (touchXY != null) {
1531             // when dragging and dropping, just find the closest free spot
1532             int[] result = layout.findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, cellXY);
1533             foundCellSpan = (result != null);
1534         } else {
1535             foundCellSpan = layout.findCellForSpan(cellXY, 1, 1);
1536         }
1537
1538         if (!foundCellSpan) {
1539             showOutOfSpaceMessage(isHotseatLayout(layout));
1540             return;
1541         }
1542
1543         LauncherModel.addItemToDatabase(this, info, container, screenId, cellXY[0], cellXY[1]);
1544
1545         if (!mRestoring) {
1546             mWorkspace.addInScreen(view, container, screenId, cellXY[0], cellXY[1], 1, 1,
1547                     isWorkspaceLocked());
1548         }
1549     }
1550
1551     private int[] getSpanForWidget(ComponentName component, int minWidth, int minHeight) {
1552         Rect padding = AppWidgetHostView.getDefaultPaddingForWidget(this, component, null);
1553         // We want to account for the extra amount of padding that we are adding to the widget
1554         // to ensure that it gets the full amount of space that it has requested
1555         int requiredWidth = minWidth + padding.left + padding.right;
1556         int requiredHeight = minHeight + padding.top + padding.bottom;
1557         return CellLayout.rectToCell(this, requiredWidth, requiredHeight, null);
1558     }
1559
1560     public int[] getSpanForWidget(AppWidgetProviderInfo info) {
1561         return getSpanForWidget(info.provider, info.minWidth, info.minHeight);
1562     }
1563
1564     public int[] getMinSpanForWidget(AppWidgetProviderInfo info) {
1565         return getSpanForWidget(info.provider, info.minResizeWidth, info.minResizeHeight);
1566     }
1567
1568     /**
1569      * Add a widget to the workspace.
1570      *
1571      * @param appWidgetId The app widget id
1572      */
1573     @Thunk void completeAddAppWidget(int appWidgetId, long container, long screenId,
1574             AppWidgetHostView hostView, LauncherAppWidgetProviderInfo appWidgetInfo) {
1575
1576         ItemInfo info = mPendingAddInfo;
1577         if (appWidgetInfo == null) {
1578             appWidgetInfo = LauncherAppWidgetProviderInfo.fromProviderInfo(this,
1579                     mAppWidgetManager.getAppWidgetInfo(appWidgetId));
1580         }
1581
1582         if (appWidgetInfo.isCustomWidget) {
1583             appWidgetId = LauncherAppWidgetInfo.CUSTOM_WIDGET_ID;
1584         }
1585
1586         LauncherAppWidgetInfo launcherInfo;
1587         launcherInfo = new LauncherAppWidgetInfo(appWidgetId, appWidgetInfo.provider);
1588         launcherInfo.spanX = info.spanX;
1589         launcherInfo.spanY = info.spanY;
1590         launcherInfo.minSpanX = info.minSpanX;
1591         launcherInfo.minSpanY = info.minSpanY;
1592         launcherInfo.user = mAppWidgetManager.getUser(appWidgetInfo);
1593
1594         LauncherModel.addItemToDatabase(this, launcherInfo,
1595                 container, screenId, info.cellX, info.cellY);
1596
1597         if (!mRestoring) {
1598             if (hostView == null) {
1599                 // Perform actual inflation because we're live
1600                 launcherInfo.hostView = mAppWidgetHost.createView(this, appWidgetId,
1601                         appWidgetInfo);
1602             } else {
1603                 // The AppWidgetHostView has already been inflated and instantiated
1604                 launcherInfo.hostView = hostView;
1605             }
1606             launcherInfo.hostView.setTag(launcherInfo);
1607             launcherInfo.hostView.setVisibility(View.VISIBLE);
1608             launcherInfo.notifyWidgetSizeChanged(this);
1609
1610             mWorkspace.addInScreen(launcherInfo.hostView, container, screenId, info.cellX,
1611                     info.cellY, launcherInfo.spanX, launcherInfo.spanY, isWorkspaceLocked());
1612
1613             addWidgetToAutoAdvanceIfNeeded(launcherInfo.hostView, appWidgetInfo);
1614         }
1615         resetAddInfo();
1616     }
1617
1618     private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
1619         @Override
1620         public void onReceive(Context context, Intent intent) {
1621             final String action = intent.getAction();
1622             if (Intent.ACTION_SCREEN_OFF.equals(action)) {
1623                 mUserPresent = false;
1624                 mDragLayer.clearAllResizeFrames();
1625                 updateAutoAdvanceState();
1626
1627                 // Reset AllApps to its initial state only if we are not in the middle of
1628                 // processing a multi-step drop
1629                 if (mAppsView != null && mWidgetsView != null &&
1630                         mPendingAddInfo.container == ItemInfo.NO_ID) {
1631                     showWorkspace(false);
1632                 }
1633             } else if (Intent.ACTION_USER_PRESENT.equals(action)) {
1634                 mUserPresent = true;
1635                 updateAutoAdvanceState();
1636             } else if (ENABLE_DEBUG_INTENTS && DebugIntents.DELETE_DATABASE.equals(action)) {
1637                 mModel.resetLoadedState(false, true);
1638                 mModel.startLoader(PagedView.INVALID_RESTORE_PAGE,
1639                         LauncherModel.LOADER_FLAG_CLEAR_WORKSPACE);
1640             } else if (ENABLE_DEBUG_INTENTS && DebugIntents.MIGRATE_DATABASE.equals(action)) {
1641                 mModel.resetLoadedState(false, true);
1642                 mModel.startLoader(PagedView.INVALID_RESTORE_PAGE,
1643                         LauncherModel.LOADER_FLAG_CLEAR_WORKSPACE
1644                                 | LauncherModel.LOADER_FLAG_MIGRATE_SHORTCUTS);
1645             }
1646         }
1647     };
1648
1649     @Override
1650     public void onAttachedToWindow() {
1651         super.onAttachedToWindow();
1652
1653         // Listen for broadcasts related to user-presence
1654         final IntentFilter filter = new IntentFilter();
1655         filter.addAction(Intent.ACTION_SCREEN_OFF);
1656         filter.addAction(Intent.ACTION_USER_PRESENT);
1657         // For handling managed profiles
1658         if (ENABLE_DEBUG_INTENTS) {
1659             filter.addAction(DebugIntents.DELETE_DATABASE);
1660             filter.addAction(DebugIntents.MIGRATE_DATABASE);
1661         }
1662         registerReceiver(mReceiver, filter);
1663         FirstFrameAnimatorHelper.initializeDrawListener(getWindow().getDecorView());
1664         setupTransparentSystemBarsForLmp();
1665         mAttached = true;
1666         mVisible = true;
1667     }
1668
1669     /**
1670      * Sets up transparent navigation and status bars in LMP.
1671      * This method is a no-op for other platform versions.
1672      */
1673     @TargetApi(Build.VERSION_CODES.LOLLIPOP)
1674     private void setupTransparentSystemBarsForLmp() {
1675         if (Utilities.isLmpOrAbove()) {
1676             Window window = getWindow();
1677             window.getAttributes().systemUiVisibility |=
1678                     (View.SYSTEM_UI_FLAG_LAYOUT_STABLE
1679                             | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
1680                             | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
1681             window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS
1682                     | WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
1683             window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
1684             window.setStatusBarColor(Color.TRANSPARENT);
1685             window.setNavigationBarColor(Color.TRANSPARENT);
1686         }
1687     }
1688
1689     @Override
1690     public void onDetachedFromWindow() {
1691         super.onDetachedFromWindow();
1692         mVisible = false;
1693
1694         if (mAttached) {
1695             unregisterReceiver(mReceiver);
1696             mAttached = false;
1697         }
1698         updateAutoAdvanceState();
1699     }
1700
1701     public void onWindowVisibilityChanged(int visibility) {
1702         mVisible = visibility == View.VISIBLE;
1703         updateAutoAdvanceState();
1704         // The following code used to be in onResume, but it turns out onResume is called when
1705         // you're in All Apps and click home to go to the workspace. onWindowVisibilityChanged
1706         // is a more appropriate event to handle
1707         if (mVisible) {
1708             if (!mWorkspaceLoading) {
1709                 final ViewTreeObserver observer = mWorkspace.getViewTreeObserver();
1710                 // We want to let Launcher draw itself at least once before we force it to build
1711                 // layers on all the workspace pages, so that transitioning to Launcher from other
1712                 // apps is nice and speedy.
1713                 observer.addOnDrawListener(new ViewTreeObserver.OnDrawListener() {
1714                     private boolean mStarted = false;
1715                     public void onDraw() {
1716                         if (mStarted) return;
1717                         mStarted = true;
1718                         // We delay the layer building a bit in order to give
1719                         // other message processing a time to run.  In particular
1720                         // this avoids a delay in hiding the IME if it was
1721                         // currently shown, because doing that may involve
1722                         // some communication back with the app.
1723                         mWorkspace.postDelayed(mBuildLayersRunnable, 500);
1724                         final ViewTreeObserver.OnDrawListener listener = this;
1725                         mWorkspace.post(new Runnable() {
1726                                 public void run() {
1727                                     if (mWorkspace != null &&
1728                                             mWorkspace.getViewTreeObserver() != null) {
1729                                         mWorkspace.getViewTreeObserver().
1730                                                 removeOnDrawListener(listener);
1731                                     }
1732                                 }
1733                             });
1734                         return;
1735                     }
1736                 });
1737             }
1738             clearTypedText();
1739         }
1740     }
1741
1742     @Thunk void sendAdvanceMessage(long delay) {
1743         mHandler.removeMessages(ADVANCE_MSG);
1744         Message msg = mHandler.obtainMessage(ADVANCE_MSG);
1745         mHandler.sendMessageDelayed(msg, delay);
1746         mAutoAdvanceSentTime = System.currentTimeMillis();
1747     }
1748
1749     @Thunk void updateAutoAdvanceState() {
1750         boolean autoAdvanceRunning = mVisible && mUserPresent && !mWidgetsToAdvance.isEmpty();
1751         if (autoAdvanceRunning != mAutoAdvanceRunning) {
1752             mAutoAdvanceRunning = autoAdvanceRunning;
1753             if (autoAdvanceRunning) {
1754                 long delay = mAutoAdvanceTimeLeft == -1 ? mAdvanceInterval : mAutoAdvanceTimeLeft;
1755                 sendAdvanceMessage(delay);
1756             } else {
1757                 if (!mWidgetsToAdvance.isEmpty()) {
1758                     mAutoAdvanceTimeLeft = Math.max(0, mAdvanceInterval -
1759                             (System.currentTimeMillis() - mAutoAdvanceSentTime));
1760                 }
1761                 mHandler.removeMessages(ADVANCE_MSG);
1762                 mHandler.removeMessages(0); // Remove messages sent using postDelayed()
1763             }
1764         }
1765     }
1766
1767     @Thunk final Handler mHandler = new Handler(new Handler.Callback() {
1768
1769         @Override
1770         public boolean handleMessage(Message msg) {
1771             if (msg.what == ADVANCE_MSG) {
1772                 int i = 0;
1773                 for (View key: mWidgetsToAdvance.keySet()) {
1774                     final View v = key.findViewById(mWidgetsToAdvance.get(key).autoAdvanceViewId);
1775                     final int delay = mAdvanceStagger * i;
1776                     if (v instanceof Advanceable) {
1777                         mHandler.postDelayed(new Runnable() {
1778                            public void run() {
1779                                ((Advanceable) v).advance();
1780                            }
1781                        }, delay);
1782                     }
1783                     i++;
1784                 }
1785                 sendAdvanceMessage(mAdvanceInterval);
1786             }
1787             return true;
1788         }
1789     });
1790
1791     void addWidgetToAutoAdvanceIfNeeded(View hostView, AppWidgetProviderInfo appWidgetInfo) {
1792         if (appWidgetInfo == null || appWidgetInfo.autoAdvanceViewId == -1) return;
1793         View v = hostView.findViewById(appWidgetInfo.autoAdvanceViewId);
1794         if (v instanceof Advanceable) {
1795             mWidgetsToAdvance.put(hostView, appWidgetInfo);
1796             ((Advanceable) v).fyiWillBeAdvancedByHostKThx();
1797             updateAutoAdvanceState();
1798         }
1799     }
1800
1801     void removeWidgetToAutoAdvance(View hostView) {
1802         if (mWidgetsToAdvance.containsKey(hostView)) {
1803             mWidgetsToAdvance.remove(hostView);
1804             updateAutoAdvanceState();
1805         }
1806     }
1807
1808     public void removeAppWidget(LauncherAppWidgetInfo launcherInfo) {
1809         removeWidgetToAutoAdvance(launcherInfo.hostView);
1810         launcherInfo.hostView = null;
1811     }
1812
1813     public void showOutOfSpaceMessage(boolean isHotseatLayout) {
1814         int strId = (isHotseatLayout ? R.string.hotseat_out_of_space : R.string.out_of_space);
1815         Toast.makeText(this, getString(strId), Toast.LENGTH_SHORT).show();
1816     }
1817
1818     public DragLayer getDragLayer() {
1819         return mDragLayer;
1820     }
1821
1822     public AllAppsContainerView getAppsView() {
1823         return mAppsView;
1824     }
1825
1826     public WidgetsContainerView getWidgetsView() {
1827         return mWidgetsView;
1828     }
1829
1830     public Workspace getWorkspace() {
1831         return mWorkspace;
1832     }
1833
1834     public Hotseat getHotseat() {
1835         return mHotseat;
1836     }
1837
1838     public ViewGroup getOverviewPanel() {
1839         return mOverviewPanel;
1840     }
1841
1842     public SearchDropTargetBar getSearchBar() {
1843         return mSearchDropTargetBar;
1844     }
1845
1846     public LauncherAppWidgetHost getAppWidgetHost() {
1847         return mAppWidgetHost;
1848     }
1849
1850     public LauncherModel getModel() {
1851         return mModel;
1852     }
1853
1854     protected SharedPreferences getSharedPrefs() {
1855         return mSharedPrefs;
1856     }
1857
1858     public DeviceProfile getDeviceProfile() {
1859         return mDeviceProfile;
1860     }
1861
1862     public void closeSystemDialogs() {
1863         getWindow().closeAllPanels();
1864
1865         // Whatever we were doing is hereby canceled.
1866         setWaitingForResult(false);
1867     }
1868
1869     @Override
1870     protected void onNewIntent(Intent intent) {
1871         long startTime = 0;
1872         if (DEBUG_RESUME_TIME) {
1873             startTime = System.currentTimeMillis();
1874         }
1875         super.onNewIntent(intent);
1876
1877         // Close the menu
1878         if (Intent.ACTION_MAIN.equals(intent.getAction())) {
1879             // also will cancel mWaitingForResult.
1880             closeSystemDialogs();
1881
1882             final boolean alreadyOnHome = mHasFocus && ((intent.getFlags() &
1883                     Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT)
1884                     != Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT);
1885
1886             if (mWorkspace == null) {
1887                 // Can be cases where mWorkspace is null, this prevents a NPE
1888                 return;
1889             }
1890             Folder openFolder = mWorkspace.getOpenFolder();
1891             // In all these cases, only animate if we're already on home
1892             mWorkspace.exitWidgetResizeMode();
1893
1894             boolean moveToDefaultScreen = mLauncherCallbacks != null ?
1895                     mLauncherCallbacks.shouldMoveToDefaultScreenOnHomeIntent() : true;
1896             if (alreadyOnHome && mState == State.WORKSPACE && !mWorkspace.isTouchActive() &&
1897                     openFolder == null && moveToDefaultScreen) {
1898                 mWorkspace.moveToDefaultScreen(true);
1899             }
1900
1901             closeFolder();
1902             exitSpringLoadedDragMode();
1903
1904             // If we are already on home, then just animate back to the workspace,
1905             // otherwise, just wait until onResume to set the state back to Workspace
1906             if (alreadyOnHome) {
1907                 showWorkspace(true);
1908             } else {
1909                 mOnResumeState = State.WORKSPACE;
1910             }
1911
1912             final View v = getWindow().peekDecorView();
1913             if (v != null && v.getWindowToken() != null) {
1914                 InputMethodManager imm = (InputMethodManager)getSystemService(
1915                         INPUT_METHOD_SERVICE);
1916                 imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
1917             }
1918
1919             // Reset the apps view
1920             if (!alreadyOnHome && mAppsView != null) {
1921                 mAppsView.scrollToTop();
1922             }
1923
1924             // Reset the widgets view
1925             if (!alreadyOnHome && mWidgetsView != null) {
1926                 mWidgetsView.scrollToTop();
1927             }
1928
1929             if (mLauncherCallbacks != null) {
1930                 mLauncherCallbacks.onHomeIntent();
1931             }
1932         }
1933
1934         if (DEBUG_RESUME_TIME) {
1935             Log.d(TAG, "Time spent in onNewIntent: " + (System.currentTimeMillis() - startTime));
1936         }
1937
1938         if (mLauncherCallbacks != null) {
1939             mLauncherCallbacks.onNewIntent(intent);
1940         }
1941     }
1942
1943     @Override
1944     public void onRestoreInstanceState(Bundle state) {
1945         super.onRestoreInstanceState(state);
1946         for (int page: mSynchronouslyBoundPages) {
1947             mWorkspace.restoreInstanceStateForChild(page);
1948         }
1949     }
1950
1951     @Override
1952     protected void onSaveInstanceState(Bundle outState) {
1953         if (mWorkspace.getChildCount() > 0) {
1954             outState.putInt(RUNTIME_STATE_CURRENT_SCREEN,
1955                     mWorkspace.getCurrentPageOffsetFromCustomContent());
1956         }
1957         super.onSaveInstanceState(outState);
1958
1959         outState.putInt(RUNTIME_STATE, mState.ordinal());
1960         // We close any open folder since it will not be re-opened, and we need to make sure
1961         // this state is reflected.
1962         closeFolder();
1963
1964         if (mPendingAddInfo.container != ItemInfo.NO_ID && mPendingAddInfo.screenId > -1 &&
1965                 mWaitingForResult) {
1966             outState.putLong(RUNTIME_STATE_PENDING_ADD_CONTAINER, mPendingAddInfo.container);
1967             outState.putLong(RUNTIME_STATE_PENDING_ADD_SCREEN, mPendingAddInfo.screenId);
1968             outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_X, mPendingAddInfo.cellX);
1969             outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_Y, mPendingAddInfo.cellY);
1970             outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_X, mPendingAddInfo.spanX);
1971             outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y, mPendingAddInfo.spanY);
1972             outState.putParcelable(RUNTIME_STATE_PENDING_ADD_WIDGET_INFO, mPendingAddWidgetInfo);
1973             outState.putInt(RUNTIME_STATE_PENDING_ADD_WIDGET_ID, mPendingAddWidgetId);
1974         }
1975
1976         // Save the current widgets tray?
1977         // TODO(hyunyoungs)
1978         outState.putSerializable(RUNTIME_STATE_VIEW_IDS, mItemIdToViewId);
1979
1980         if (mLauncherCallbacks != null) {
1981             mLauncherCallbacks.onSaveInstanceState(outState);
1982         }
1983     }
1984
1985     @Override
1986     public void onDestroy() {
1987         super.onDestroy();
1988
1989         // Remove all pending runnables
1990         mHandler.removeMessages(ADVANCE_MSG);
1991         mHandler.removeMessages(0);
1992         mWorkspace.removeCallbacks(mBuildLayersRunnable);
1993
1994         // Stop callbacks from LauncherModel
1995         LauncherAppState app = (LauncherAppState.getInstance());
1996
1997         // It's possible to receive onDestroy after a new Launcher activity has
1998         // been created. In this case, don't interfere with the new Launcher.
1999         if (mModel.isCurrentCallbacks(this)) {
2000             mModel.stopLoader();
2001             app.setLauncher(null);
2002         }
2003
2004         try {
2005             mAppWidgetHost.stopListening();
2006         } catch (NullPointerException ex) {
2007             Log.w(TAG, "problem while stopping AppWidgetHost during Launcher destruction", ex);
2008         }
2009         mAppWidgetHost = null;
2010
2011         mWidgetsToAdvance.clear();
2012
2013         TextKeyListener.getInstance().release();
2014
2015         unregisterReceiver(mCloseSystemDialogsReceiver);
2016
2017         mDragLayer.clearAllResizeFrames();
2018         ((ViewGroup) mWorkspace.getParent()).removeAllViews();
2019         mWorkspace.removeAllWorkspaceScreens();
2020         mWorkspace = null;
2021         mDragController = null;
2022
2023         LauncherAnimUtils.onDestroyActivity();
2024
2025         if (mLauncherCallbacks != null) {
2026             mLauncherCallbacks.onDestroy();
2027         }
2028     }
2029
2030     public DragController getDragController() {
2031         return mDragController;
2032     }
2033
2034     @Override
2035     public void startActivityForResult(Intent intent, int requestCode) {
2036         onStartForResult(requestCode);
2037         super.startActivityForResult(intent, requestCode);
2038     }
2039
2040     @Override
2041     public void startIntentSenderForResult (IntentSender intent, int requestCode,
2042             Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, Bundle options) {
2043         onStartForResult(requestCode);
2044         try {
2045             super.startIntentSenderForResult(intent, requestCode,
2046                 fillInIntent, flagsMask, flagsValues, extraFlags, options);
2047         } catch (IntentSender.SendIntentException e) {
2048             throw new ActivityNotFoundException();
2049         }
2050     }
2051
2052     private void onStartForResult(int requestCode) {
2053         if (requestCode >= 0) {
2054             setWaitingForResult(true);
2055         }
2056     }
2057
2058     /**
2059      * Indicates that we want global search for this activity by setting the globalSearch
2060      * argument for {@link #startSearch} to true.
2061      */
2062     @Override
2063     public void startSearch(String initialQuery, boolean selectInitialQuery,
2064             Bundle appSearchData, boolean globalSearch) {
2065
2066         if (initialQuery == null) {
2067             // Use any text typed in the launcher as the initial query
2068             initialQuery = getTypedText();
2069         }
2070         if (appSearchData == null) {
2071             appSearchData = new Bundle();
2072             appSearchData.putString("source", "launcher-search");
2073         }
2074         Rect sourceBounds = new Rect();
2075         if (mSearchDropTargetBar != null) {
2076             sourceBounds = mSearchDropTargetBar.getSearchBarBounds();
2077         }
2078
2079         boolean clearTextImmediately = startSearch(initialQuery, selectInitialQuery,
2080                 appSearchData, sourceBounds);
2081         if (clearTextImmediately) {
2082             clearTypedText();
2083         }
2084
2085         // We need to show the workspace after starting the search
2086         showWorkspace(true);
2087     }
2088
2089     /**
2090      * Start a text search.
2091      *
2092      * @return {@code true} if the search will start immediately, so any further keypresses
2093      * will be handled directly by the search UI. {@code false} if {@link Launcher} should continue
2094      * to buffer keypresses.
2095      */
2096     public boolean startSearch(String initialQuery,
2097             boolean selectInitialQuery, Bundle appSearchData, Rect sourceBounds) {
2098         if (mLauncherCallbacks != null && mLauncherCallbacks.providesSearch()) {
2099             return mLauncherCallbacks.startSearch(initialQuery, selectInitialQuery, appSearchData,
2100                     sourceBounds);
2101         }
2102
2103         startGlobalSearch(initialQuery, selectInitialQuery,
2104                 appSearchData, sourceBounds);
2105         return false;
2106     }
2107
2108     /**
2109      * Starts the global search activity. This code is a copied from SearchManager
2110      */
2111     private void startGlobalSearch(String initialQuery,
2112             boolean selectInitialQuery, Bundle appSearchData, Rect sourceBounds) {
2113         final SearchManager searchManager =
2114             (SearchManager) getSystemService(Context.SEARCH_SERVICE);
2115         ComponentName globalSearchActivity = searchManager.getGlobalSearchActivity();
2116         if (globalSearchActivity == null) {
2117             Log.w(TAG, "No global search activity found.");
2118             return;
2119         }
2120         Intent intent = new Intent(SearchManager.INTENT_ACTION_GLOBAL_SEARCH);
2121         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
2122         intent.setComponent(globalSearchActivity);
2123         // Make sure that we have a Bundle to put source in
2124         if (appSearchData == null) {
2125             appSearchData = new Bundle();
2126         } else {
2127             appSearchData = new Bundle(appSearchData);
2128         }
2129         // Set source to package name of app that starts global search if not set already.
2130         if (!appSearchData.containsKey("source")) {
2131             appSearchData.putString("source", getPackageName());
2132         }
2133         intent.putExtra(SearchManager.APP_DATA, appSearchData);
2134         if (!TextUtils.isEmpty(initialQuery)) {
2135             intent.putExtra(SearchManager.QUERY, initialQuery);
2136         }
2137         if (selectInitialQuery) {
2138             intent.putExtra(SearchManager.EXTRA_SELECT_QUERY, selectInitialQuery);
2139         }
2140         intent.setSourceBounds(sourceBounds);
2141         try {
2142             startActivity(intent);
2143         } catch (ActivityNotFoundException ex) {
2144             Log.e(TAG, "Global search activity not found: " + globalSearchActivity);
2145         }
2146     }
2147
2148     public boolean isOnCustomContent() {
2149         return mWorkspace.isOnOrMovingToCustomContent();
2150     }
2151
2152     @Override
2153     public boolean onPrepareOptionsMenu(Menu menu) {
2154         super.onPrepareOptionsMenu(menu);
2155         if (!isOnCustomContent()) {
2156             // Close any open folders
2157             closeFolder();
2158             // Stop resizing any widgets
2159             mWorkspace.exitWidgetResizeMode();
2160             if (!mWorkspace.isInOverviewMode()) {
2161                 // Show the overview mode
2162                 showOverviewMode(true);
2163             } else {
2164                 showWorkspace(true);
2165             }
2166         }
2167         if (mLauncherCallbacks != null) {
2168             return mLauncherCallbacks.onPrepareOptionsMenu(menu);
2169         }
2170
2171         return false;
2172     }
2173
2174     @Override
2175     public boolean onSearchRequested() {
2176         startSearch(null, false, null, true);
2177         // Use a custom animation for launching search
2178         return true;
2179     }
2180
2181     public boolean isWorkspaceLocked() {
2182         return mWorkspaceLoading || mWaitingForResult;
2183     }
2184
2185     public boolean isWorkspaceLoading() {
2186         return mWorkspaceLoading;
2187     }
2188
2189     private void setWorkspaceLoading(boolean value) {
2190         boolean isLocked = isWorkspaceLocked();
2191         mWorkspaceLoading = value;
2192         if (isLocked != isWorkspaceLocked()) {
2193             onWorkspaceLockedChanged();
2194         }
2195     }
2196
2197     private void setWaitingForResult(boolean value) {
2198         boolean isLocked = isWorkspaceLocked();
2199         mWaitingForResult = value;
2200         if (isLocked != isWorkspaceLocked()) {
2201             onWorkspaceLockedChanged();
2202         }
2203     }
2204
2205     protected void onWorkspaceLockedChanged() {
2206         if (mLauncherCallbacks != null) {
2207             mLauncherCallbacks.onWorkspaceLockedChanged();
2208         }
2209     }
2210
2211     private void resetAddInfo() {
2212         mPendingAddInfo.container = ItemInfo.NO_ID;
2213         mPendingAddInfo.screenId = -1;
2214         mPendingAddInfo.cellX = mPendingAddInfo.cellY = -1;
2215         mPendingAddInfo.spanX = mPendingAddInfo.spanY = -1;
2216         mPendingAddInfo.minSpanX = mPendingAddInfo.minSpanY = -1;
2217         mPendingAddInfo.dropPos = null;
2218     }
2219
2220     void addAppWidgetImpl(final int appWidgetId, final ItemInfo info, final
2221             AppWidgetHostView boundWidget, final LauncherAppWidgetProviderInfo appWidgetInfo) {
2222         addAppWidgetImpl(appWidgetId, info, boundWidget, appWidgetInfo, 0);
2223     }
2224
2225     void addAppWidgetImpl(final int appWidgetId, final ItemInfo info,
2226             final AppWidgetHostView boundWidget, final LauncherAppWidgetProviderInfo appWidgetInfo,
2227             int delay) {
2228         if (appWidgetInfo.configure != null) {
2229             mPendingAddWidgetInfo = appWidgetInfo;
2230             mPendingAddWidgetId = appWidgetId;
2231
2232             // Launch over to configure widget, if needed
2233             mAppWidgetManager.startConfigActivity(appWidgetInfo, appWidgetId, this,
2234                     mAppWidgetHost, REQUEST_CREATE_APPWIDGET);
2235
2236         } else {
2237             // Otherwise just add it
2238             Runnable onComplete = new Runnable() {
2239                 @Override
2240                 public void run() {
2241                     // Exit spring loaded mode if necessary after adding the widget
2242                     exitSpringLoadedDragModeDelayed(true, EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT,
2243                             null);
2244                 }
2245             };
2246             completeAddAppWidget(appWidgetId, info.container, info.screenId, boundWidget,
2247                     appWidgetInfo);
2248             mWorkspace.removeExtraEmptyScreenDelayed(true, onComplete, delay, false);
2249         }
2250     }
2251
2252     protected void moveToCustomContentScreen(boolean animate) {
2253         // Close any folders that may be open.
2254         closeFolder();
2255         mWorkspace.moveToCustomContentScreen(animate);
2256     }
2257
2258     public void addPendingItem(PendingAddItemInfo info, long container, long screenId,
2259             int[] cell, int spanX, int spanY) {
2260         switch (info.itemType) {
2261             case LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET:
2262             case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET:
2263                 int span[] = new int[2];
2264                 span[0] = spanX;
2265                 span[1] = spanY;
2266                 addAppWidgetFromDrop((PendingAddWidgetInfo) info,
2267                         container, screenId, cell, span);
2268                 break;
2269             case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
2270                 processShortcutFromDrop(info.componentName, container, screenId, cell);
2271                 break;
2272             default:
2273                 throw new IllegalStateException("Unknown item type: " + info.itemType);
2274             }
2275     }
2276
2277     /**
2278      * Process a shortcut drop.
2279      *
2280      * @param componentName The name of the component
2281      * @param screenId The ID of the screen where it should be added
2282      * @param cell The cell it should be added to, optional
2283      */
2284     private void processShortcutFromDrop(ComponentName componentName, long container, long screenId,
2285             int[] cell) {
2286         resetAddInfo();
2287         mPendingAddInfo.container = container;
2288         mPendingAddInfo.screenId = screenId;
2289         mPendingAddInfo.dropPos = null;
2290
2291         if (cell != null) {
2292             mPendingAddInfo.cellX = cell[0];
2293             mPendingAddInfo.cellY = cell[1];
2294         }
2295
2296         Intent createShortcutIntent = new Intent(Intent.ACTION_CREATE_SHORTCUT);
2297         createShortcutIntent.setComponent(componentName);
2298         Utilities.startActivityForResultSafely(this, createShortcutIntent, REQUEST_CREATE_SHORTCUT);
2299     }
2300
2301     /**
2302      * Process a widget drop.
2303      *
2304      * @param info The PendingAppWidgetInfo of the widget being added.
2305      * @param screenId The ID of the screen where it should be added
2306      * @param cell The cell it should be added to, optional
2307      */
2308     private void addAppWidgetFromDrop(PendingAddWidgetInfo info, long container, long screenId,
2309             int[] cell, int[] span) {
2310         resetAddInfo();
2311         mPendingAddInfo.container = info.container = container;
2312         mPendingAddInfo.screenId = info.screenId = screenId;
2313         mPendingAddInfo.dropPos = null;
2314         mPendingAddInfo.minSpanX = info.minSpanX;
2315         mPendingAddInfo.minSpanY = info.minSpanY;
2316
2317         if (cell != null) {
2318             mPendingAddInfo.cellX = cell[0];
2319             mPendingAddInfo.cellY = cell[1];
2320         }
2321         if (span != null) {
2322             mPendingAddInfo.spanX = span[0];
2323             mPendingAddInfo.spanY = span[1];
2324         }
2325
2326         AppWidgetHostView hostView = info.boundWidget;
2327         int appWidgetId;
2328         if (hostView != null) {
2329             appWidgetId = hostView.getAppWidgetId();
2330             addAppWidgetImpl(appWidgetId, info, hostView, info.info);
2331
2332             // Clear the boundWidget so that it doesn't get destroyed.
2333             info.boundWidget = null;
2334         } else {
2335             // In this case, we either need to start an activity to get permission to bind
2336             // the widget, or we need to start an activity to configure the widget, or both.
2337             appWidgetId = getAppWidgetHost().allocateAppWidgetId();
2338             Bundle options = info.bindOptions;
2339
2340             boolean success = mAppWidgetManager.bindAppWidgetIdIfAllowed(
2341                     appWidgetId, info.info, options);
2342             if (success) {
2343                 addAppWidgetImpl(appWidgetId, info, null, info.info);
2344             } else {
2345                 mPendingAddWidgetInfo = info.info;
2346                 Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_BIND);
2347                 intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
2348                 intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_PROVIDER, info.componentName);
2349                 mAppWidgetManager.getUser(mPendingAddWidgetInfo)
2350                     .addToIntent(intent, AppWidgetManager.EXTRA_APPWIDGET_PROVIDER_PROFILE);
2351                 // TODO: we need to make sure that this accounts for the options bundle.
2352                 // intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_OPTIONS, options);
2353                 startActivityForResult(intent, REQUEST_BIND_APPWIDGET);
2354             }
2355         }
2356     }
2357
2358     FolderIcon addFolder(CellLayout layout, long container, final long screenId, int cellX,
2359             int cellY) {
2360         final FolderInfo folderInfo = new FolderInfo();
2361         folderInfo.title = getText(R.string.folder_name);
2362
2363         // Update the model
2364         LauncherModel.addItemToDatabase(Launcher.this, folderInfo, container, screenId,
2365                 cellX, cellY);
2366         sFolders.put(folderInfo.id, folderInfo);
2367
2368         // Create the view
2369         FolderIcon newFolder =
2370             FolderIcon.fromXml(R.layout.folder_icon, this, layout, folderInfo, mIconCache);
2371         mWorkspace.addInScreen(newFolder, container, screenId, cellX, cellY, 1, 1,
2372                 isWorkspaceLocked());
2373         // Force measure the new folder icon
2374         CellLayout parent = mWorkspace.getParentCellLayoutForView(newFolder);
2375         parent.getShortcutsAndWidgets().measureChild(newFolder);
2376         return newFolder;
2377     }
2378
2379     void removeFolder(FolderInfo folder) {
2380         sFolders.remove(folder.id);
2381     }
2382
2383     @Override
2384     public boolean dispatchKeyEvent(KeyEvent event) {
2385         if (event.getAction() == KeyEvent.ACTION_DOWN) {
2386             switch (event.getKeyCode()) {
2387                 case KeyEvent.KEYCODE_HOME:
2388                     return true;
2389                 case KeyEvent.KEYCODE_VOLUME_DOWN:
2390                     if (Utilities.isPropertyEnabled(DUMP_STATE_PROPERTY)) {
2391                         dumpState();
2392                         return true;
2393                     }
2394                     break;
2395             }
2396         } else if (event.getAction() == KeyEvent.ACTION_UP) {
2397             switch (event.getKeyCode()) {
2398                 case KeyEvent.KEYCODE_HOME:
2399                     return true;
2400             }
2401         }
2402
2403         return super.dispatchKeyEvent(event);
2404     }
2405
2406     @Override
2407     public void onBackPressed() {
2408         if (mLauncherCallbacks != null && mLauncherCallbacks.handleBackPressed()) {
2409             return;
2410         }
2411
2412         if (mDragController.isDragging()) {
2413             mDragController.cancelDrag();
2414             return;
2415         }
2416
2417         if (isAppsViewVisible()) {
2418             showWorkspace(true);
2419         } else if (isWidgetsViewVisible())  {
2420             showOverviewMode(true);
2421         } else if (mWorkspace.isInOverviewMode()) {
2422             showWorkspace(true);
2423         } else if (mWorkspace.getOpenFolder() != null) {
2424             Folder openFolder = mWorkspace.getOpenFolder();
2425             if (openFolder.isEditingName()) {
2426                 openFolder.dismissEditingName();
2427             } else {
2428                 closeFolder();
2429             }
2430         } else {
2431             mWorkspace.exitWidgetResizeMode();
2432
2433             // Back button is a no-op here, but give at least some feedback for the button press
2434             mWorkspace.showOutlinesTemporarily();
2435         }
2436     }
2437
2438     /**
2439      * Re-listen when widget host is reset.
2440      */
2441     @Override
2442     public void onAppWidgetHostReset() {
2443         if (mAppWidgetHost != null) {
2444             mAppWidgetHost.startListening();
2445         }
2446     }
2447
2448     /**
2449      * Launches the intent referred by the clicked shortcut.
2450      *
2451      * @param v The view representing the clicked shortcut.
2452      */
2453     public void onClick(View v) {
2454         // Make sure that rogue clicks don't get through while allapps is launching, or after the
2455         // view has detached (it's possible for this to happen if the view is removed mid touch).
2456         if (v.getWindowToken() == null) {
2457             return;
2458         }
2459
2460         if (!mWorkspace.isFinishedSwitchingState()) {
2461             return;
2462         }
2463
2464         if (v instanceof Workspace) {
2465             if (mWorkspace.isInOverviewMode()) {
2466                 showWorkspace(true);
2467             }
2468             return;
2469         }
2470
2471         if (v instanceof CellLayout) {
2472             if (mWorkspace.isInOverviewMode()) {
2473                 showWorkspace(mWorkspace.indexOfChild(v), true);
2474             }
2475         }
2476
2477         Object tag = v.getTag();
2478         if (tag instanceof ShortcutInfo) {
2479             onClickAppShortcut(v);
2480         } else if (tag instanceof FolderInfo) {
2481             if (v instanceof FolderIcon) {
2482                 onClickFolderIcon(v);
2483             }
2484         } else if (v == mAllAppsButton) {
2485             onClickAllAppsButton(v);
2486         } else if (tag instanceof AppInfo) {
2487             startAppShortcutOrInfoActivity(v);
2488         } else if (tag instanceof LauncherAppWidgetInfo) {
2489             if (v instanceof PendingAppWidgetHostView) {
2490                 onClickPendingWidget((PendingAppWidgetHostView) v);
2491             }
2492         }
2493     }
2494
2495     @SuppressLint("ClickableViewAccessibility")
2496     public boolean onTouch(View v, MotionEvent event) {
2497         return false;
2498     }
2499
2500     /**
2501      * Event handler for the app widget view which has not fully restored.
2502      */
2503     public void onClickPendingWidget(final PendingAppWidgetHostView v) {
2504         if (mIsSafeModeEnabled) {
2505             Toast.makeText(this, R.string.safemode_widget_error, Toast.LENGTH_SHORT).show();
2506             return;
2507         }
2508
2509         final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag();
2510         if (v.isReadyForClickSetup()) {
2511             int widgetId = info.appWidgetId;
2512             AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(widgetId);
2513             if (appWidgetInfo != null) {
2514                 mPendingAddWidgetInfo = LauncherAppWidgetProviderInfo.fromProviderInfo(
2515                         this, appWidgetInfo);
2516                 mPendingAddInfo.copyFrom(info);
2517                 mPendingAddWidgetId = widgetId;
2518
2519                 AppWidgetManagerCompat.getInstance(this).startConfigActivity(appWidgetInfo,
2520                         info.appWidgetId, this, mAppWidgetHost, REQUEST_RECONFIGURE_APPWIDGET);
2521             }
2522         } else if (info.installProgress < 0) {
2523             // The install has not been queued
2524             final String packageName = info.providerName.getPackageName();
2525             showBrokenAppInstallDialog(packageName,
2526                 new DialogInterface.OnClickListener() {
2527                     public void onClick(DialogInterface dialog, int id) {
2528                         startActivitySafely(v, LauncherModel.getMarketIntent(packageName), info);
2529                     }
2530                 });
2531         } else {
2532             // Download has started.
2533             final String packageName = info.providerName.getPackageName();
2534             startActivitySafely(v, LauncherModel.getMarketIntent(packageName), info);
2535         }
2536     }
2537
2538     /**
2539      * Event handler for the "grid" button that appears on the home screen, which
2540      * enters all apps mode.
2541      *
2542      * @param v The view that was clicked.
2543      */
2544     protected void onClickAllAppsButton(View v) {
2545         if (LOGD) Log.d(TAG, "onClickAllAppsButton");
2546         if (isAppsViewVisible()) {
2547             showWorkspace(true);
2548         } else {
2549             // Try and refresh the set of predicted apps before we enter launcher
2550             showAppsView(true /* animated */, false /* resetListToTop */,
2551                     true /* updatePredictedApps */);
2552         }
2553     }
2554
2555     private void showBrokenAppInstallDialog(final String packageName,
2556             DialogInterface.OnClickListener onSearchClickListener) {
2557         new AlertDialog.Builder(this)
2558             .setTitle(R.string.abandoned_promises_title)
2559             .setMessage(R.string.abandoned_promise_explanation)
2560             .setPositiveButton(R.string.abandoned_search, onSearchClickListener)
2561             .setNeutralButton(R.string.abandoned_clean_this,
2562                 new DialogInterface.OnClickListener() {
2563                     public void onClick(DialogInterface dialog, int id) {
2564                         final UserHandleCompat user = UserHandleCompat.myUserHandle();
2565                         mWorkspace.removeAbandonedPromise(packageName, user);
2566                     }
2567                 })
2568             .create().show();
2569         return;
2570     }
2571
2572     /**
2573      * Event handler for an app shortcut click.
2574      *
2575      * @param v The view that was clicked. Must be a tagged with a {@link ShortcutInfo}.
2576      */
2577     protected void onClickAppShortcut(final View v) {
2578         if (LOGD) Log.d(TAG, "onClickAppShortcut");
2579         Object tag = v.getTag();
2580         if (!(tag instanceof ShortcutInfo)) {
2581             throw new IllegalArgumentException("Input must be a Shortcut");
2582         }
2583
2584         // Open shortcut
2585         final ShortcutInfo shortcut = (ShortcutInfo) tag;
2586
2587         if (shortcut.isDisabled != 0) {
2588             int error = R.string.activity_not_available;
2589             if ((shortcut.isDisabled & ShortcutInfo.FLAG_DISABLED_SAFEMODE) != 0) {
2590                 error = R.string.safemode_shortcut_error;
2591             }
2592             Toast.makeText(this, error, Toast.LENGTH_SHORT).show();
2593             return;
2594         }
2595
2596         final Intent intent = shortcut.intent;
2597
2598         // Check for special shortcuts
2599         if (intent.getComponent() != null) {
2600             final String shortcutClass = intent.getComponent().getClassName();
2601
2602             if (shortcutClass.equals(MemoryDumpActivity.class.getName())) {
2603                 MemoryDumpActivity.startDump(this);
2604                 return;
2605             } else if (shortcutClass.equals(ToggleWeightWatcher.class.getName())) {
2606                 toggleShowWeightWatcher();
2607                 return;
2608             }
2609         }
2610
2611         // Check for abandoned promise
2612         if ((v instanceof BubbleTextView)
2613                 && shortcut.isPromise()
2614                 && !shortcut.hasStatusFlag(ShortcutInfo.FLAG_INSTALL_SESSION_ACTIVE)) {
2615             showBrokenAppInstallDialog(
2616                     shortcut.getTargetComponent().getPackageName(),
2617                     new DialogInterface.OnClickListener() {
2618                         public void onClick(DialogInterface dialog, int id) {
2619                             startAppShortcutOrInfoActivity(v);
2620                         }
2621                     });
2622             return;
2623         }
2624
2625         // Start activities
2626         startAppShortcutOrInfoActivity(v);
2627
2628         if (mLauncherCallbacks != null) {
2629             mLauncherCallbacks.onClickAppShortcut(v);
2630         }
2631     }
2632
2633     @Thunk void startAppShortcutOrInfoActivity(View v) {
2634         Object tag = v.getTag();
2635         final ShortcutInfo shortcut;
2636         final Intent intent;
2637         if (tag instanceof ShortcutInfo) {
2638             shortcut = (ShortcutInfo) tag;
2639             intent = shortcut.intent;
2640             int[] pos = new int[2];
2641             v.getLocationOnScreen(pos);
2642             intent.setSourceBounds(new Rect(pos[0], pos[1],
2643                     pos[0] + v.getWidth(), pos[1] + v.getHeight()));
2644
2645         } else if (tag instanceof AppInfo) {
2646             shortcut = null;
2647             intent = ((AppInfo) tag).intent;
2648         } else {
2649             throw new IllegalArgumentException("Input must be a Shortcut or AppInfo");
2650         }
2651
2652         boolean success = startActivitySafely(v, intent, tag);
2653         mStats.recordLaunch(v, intent, shortcut);
2654
2655         if (success && v instanceof BubbleTextView) {
2656             mWaitingForResume = (BubbleTextView) v;
2657             mWaitingForResume.setStayPressed(true);
2658         }
2659     }
2660
2661     /**
2662      * Event handler for a folder icon click.
2663      *
2664      * @param v The view that was clicked. Must be an instance of {@link FolderIcon}.
2665      */
2666     protected void onClickFolderIcon(View v) {
2667         if (LOGD) Log.d(TAG, "onClickFolder");
2668         if (!(v instanceof FolderIcon)){
2669             throw new IllegalArgumentException("Input must be a FolderIcon");
2670         }
2671
2672         FolderIcon folderIcon = (FolderIcon) v;
2673         final FolderInfo info = folderIcon.getFolderInfo();
2674         Folder openFolder = mWorkspace.getFolderForTag(info);
2675
2676         // If the folder info reports that the associated folder is open, then verify that
2677         // it is actually opened. There have been a few instances where this gets out of sync.
2678         if (info.opened && openFolder == null) {
2679             Log.d(TAG, "Folder info marked as open, but associated folder is not open. Screen: "
2680                     + info.screenId + " (" + info.cellX + ", " + info.cellY + ")");
2681             info.opened = false;
2682         }
2683
2684         if (!info.opened && !folderIcon.getFolder().isDestroyed()) {
2685             // Close any open folder
2686             closeFolder();
2687             // Open the requested folder
2688             openFolder(folderIcon);
2689         } else {
2690             // Find the open folder...
2691             int folderScreen;
2692             if (openFolder != null) {
2693                 folderScreen = mWorkspace.getPageForView(openFolder);
2694                 // .. and close it
2695                 closeFolder(openFolder);
2696                 if (folderScreen != mWorkspace.getCurrentPage()) {
2697                     // Close any folder open on the current screen
2698                     closeFolder();
2699                     // Pull the folder onto this screen
2700                     openFolder(folderIcon);
2701                 }
2702             }
2703         }
2704
2705         if (mLauncherCallbacks != null) {
2706             mLauncherCallbacks.onClickFolderIcon(v);
2707         }
2708     }
2709
2710     /**
2711      * Event handler for the (Add) Widgets button that appears after a long press
2712      * on the home screen.
2713      */
2714     protected void onClickAddWidgetButton(View view) {
2715         if (LOGD) Log.d(TAG, "onClickAddWidgetButton");
2716         if (mIsSafeModeEnabled) {
2717             Toast.makeText(this, R.string.safemode_widget_error, Toast.LENGTH_SHORT).show();
2718         } else {
2719             showWidgetsView(true /* animated */, true /* resetPageToZero */);
2720             if (mLauncherCallbacks != null) {
2721                 mLauncherCallbacks.onClickAddWidgetButton(view);
2722             }
2723         }
2724     }
2725
2726     /**
2727      * Event handler for the wallpaper picker button that appears after a long press
2728      * on the home screen.
2729      */
2730     protected void onClickWallpaperPicker(View v) {
2731         if (LOGD) Log.d(TAG, "onClickWallpaperPicker");
2732         startActivityForResult(new Intent(Intent.ACTION_SET_WALLPAPER).setPackage(getPackageName()),
2733                 REQUEST_PICK_WALLPAPER);
2734
2735         if (mLauncherCallbacks != null) {
2736             mLauncherCallbacks.onClickWallpaperPicker(v);
2737         }
2738     }
2739
2740     /**
2741      * Event handler for a click on the settings button that appears after a long press
2742      * on the home screen.
2743      */
2744     protected void onClickSettingsButton(View v) {
2745         if (LOGD) Log.d(TAG, "onClickSettingsButton");
2746         if (mLauncherCallbacks != null) {
2747             mLauncherCallbacks.onClickSettingsButton(v);
2748         } else {
2749             startActivity(new Intent(this, SettingsActivity.class));
2750         }
2751     }
2752
2753     public View.OnTouchListener getHapticFeedbackTouchListener() {
2754         if (mHapticFeedbackTouchListener == null) {
2755             mHapticFeedbackTouchListener = new View.OnTouchListener() {
2756                 @SuppressLint("ClickableViewAccessibility")
2757                 @Override
2758                 public boolean onTouch(View v, MotionEvent event) {
2759                     if ((event.getAction() & MotionEvent.ACTION_MASK) == MotionEvent.ACTION_DOWN) {
2760                         v.performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY);
2761                     }
2762                     return false;
2763                 }
2764             };
2765         }
2766         return mHapticFeedbackTouchListener;
2767     }
2768
2769     public void onDragStarted(View view) {
2770         if (isOnCustomContent()) {
2771             // Custom content screen doesn't participate in drag and drop. If on custom
2772             // content screen, move to default.
2773             moveWorkspaceToDefaultScreen();
2774         }
2775
2776         if (mLauncherCallbacks != null) {
2777             mLauncherCallbacks.onDragStarted(view);
2778         }
2779     }
2780
2781     /**
2782      * Called when the user stops interacting with the launcher.
2783      * This implies that the user is now on the homescreen and is not doing housekeeping.
2784      */
2785     protected void onInteractionEnd() {
2786         if (mLauncherCallbacks != null) {
2787             mLauncherCallbacks.onInteractionEnd();
2788         }
2789     }
2790
2791     /**
2792      * Called when the user starts interacting with the launcher.
2793      * The possible interactions are:
2794      *  - open all apps
2795      *  - reorder an app shortcut, or a widget
2796      *  - open the overview mode.
2797      * This is a good time to stop doing things that only make sense
2798      * when the user is on the homescreen and not doing housekeeping.
2799      */
2800     protected void onInteractionBegin() {
2801         if (mLauncherCallbacks != null) {
2802             mLauncherCallbacks.onInteractionBegin();
2803         }
2804     }
2805
2806     /** Updates the interaction state. */
2807     public void updateInteraction(Workspace.State fromState, Workspace.State toState) {
2808         // Only update the interacting state if we are transitioning to/from a view with an
2809         // overlay
2810         boolean fromStateWithOverlay = fromState != Workspace.State.NORMAL;
2811         boolean toStateWithOverlay = toState != Workspace.State.NORMAL;
2812         if (toStateWithOverlay) {
2813             onInteractionBegin();
2814         } else if (fromStateWithOverlay) {
2815             onInteractionEnd();
2816         }
2817     }
2818
2819     void startApplicationDetailsActivity(ComponentName componentName, UserHandleCompat user) {
2820         try {
2821             LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(this);
2822             launcherApps.showAppDetailsForProfile(componentName, user);
2823         } catch (SecurityException e) {
2824             Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
2825             Log.e(TAG, "Launcher does not have permission to launch settings");
2826         } catch (ActivityNotFoundException e) {
2827             Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
2828             Log.e(TAG, "Unable to launch settings");
2829         }
2830     }
2831
2832     // returns true if the activity was started
2833     boolean startApplicationUninstallActivity(ComponentName componentName, int flags,
2834             UserHandleCompat user) {
2835         if ((flags & AppInfo.DOWNLOADED_FLAG) == 0) {
2836             // System applications cannot be installed. For now, show a toast explaining that.
2837             // We may give them the option of disabling apps this way.
2838             int messageId = R.string.uninstall_system_app_text;
2839             Toast.makeText(this, messageId, Toast.LENGTH_SHORT).show();
2840             return false;
2841         } else {
2842             String packageName = componentName.getPackageName();
2843             String className = componentName.getClassName();
2844             Intent intent = new Intent(
2845                     Intent.ACTION_DELETE, Uri.fromParts("package", packageName, className));
2846             intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
2847                     Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
2848             if (user != null) {
2849                 user.addToIntent(intent, Intent.EXTRA_USER);
2850             }
2851             startActivity(intent);
2852             return true;
2853         }
2854     }
2855
2856     private boolean startActivity(View v, Intent intent, Object tag) {
2857         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
2858         try {
2859             // Only launch using the new animation if the shortcut has not opted out (this is a
2860             // private contract between launcher and may be ignored in the future).
2861             boolean useLaunchAnimation = (v != null) &&
2862                     !intent.hasExtra(INTENT_EXTRA_IGNORE_LAUNCH_ANIMATION);
2863             LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(this);
2864             UserManagerCompat userManager = UserManagerCompat.getInstance(this);
2865
2866             UserHandleCompat user = null;
2867             if (intent.hasExtra(AppInfo.EXTRA_PROFILE)) {
2868                 long serialNumber = intent.getLongExtra(AppInfo.EXTRA_PROFILE, -1);
2869                 user = userManager.getUserForSerialNumber(serialNumber);
2870             }
2871
2872             Bundle optsBundle = null;
2873             if (useLaunchAnimation) {
2874                 ActivityOptions opts = null;
2875                 if (sClipRevealMethod != null) {
2876                     // TODO: call method directly when Launcher3 can depend on M APIs
2877                     int left = 0, top = 0;
2878                     int width = v.getMeasuredWidth(), height = v.getMeasuredHeight();
2879                     if (v instanceof TextView) {
2880                         // Launch from center of icon, not entire view
2881                         Drawable icon = Workspace.getTextViewIcon((TextView) v);
2882                         if (icon != null) {
2883                             Rect bounds = icon.getBounds();
2884                             left = (width - bounds.width()) / 2;
2885                             top = v.getPaddingTop();
2886                             width = bounds.width();
2887                             height = bounds.height();
2888                         }
2889                     }
2890                     try {
2891                         opts = (ActivityOptions) sClipRevealMethod.invoke(null, v,
2892                                 left, top, width, height);
2893                     } catch (IllegalAccessException e) {
2894                         Log.d(TAG, "Could not call makeClipRevealAnimation: " + e);
2895                         sClipRevealMethod = null;
2896                     } catch (InvocationTargetException e) {
2897                         Log.d(TAG, "Could not call makeClipRevealAnimation: " + e);
2898                         sClipRevealMethod = null;
2899                     }
2900                 }
2901                 if (opts == null && !Utilities.isLmpOrAbove()) {
2902                     opts = ActivityOptions.makeScaleUpAnimation(v, 0, 0,
2903                                     v.getMeasuredWidth(), v.getMeasuredHeight());
2904                 }
2905                 optsBundle = opts != null ? opts.toBundle() : null;
2906             }
2907
2908             if (user == null || user.equals(UserHandleCompat.myUserHandle())) {
2909                 // Could be launching some bookkeeping activity
2910                 startActivity(intent, optsBundle);
2911             } else {
2912                 // TODO Component can be null when shortcuts are supported for secondary user
2913                 launcherApps.startActivityForProfile(intent.getComponent(), user,
2914                         intent.getSourceBounds(), optsBundle);
2915             }
2916             return true;
2917         } catch (SecurityException e) {
2918             Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
2919             Log.e(TAG, "Launcher does not have the permission to launch " + intent +
2920                     ". Make sure to create a MAIN intent-filter for the corresponding activity " +
2921                     "or use the exported attribute for this activity. "
2922                     + "tag="+ tag + " intent=" + intent, e);
2923         }
2924         return false;
2925     }
2926
2927     @Thunk boolean startActivitySafely(View v, Intent intent, Object tag) {
2928         boolean success = false;
2929         if (mIsSafeModeEnabled && !Utilities.isSystemApp(this, intent)) {
2930             Toast.makeText(this, R.string.safemode_shortcut_error, Toast.LENGTH_SHORT).show();
2931             return false;
2932         }
2933         try {
2934             success = startActivity(v, intent, tag);
2935         } catch (ActivityNotFoundException e) {
2936             Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
2937             Log.e(TAG, "Unable to launch. tag=" + tag + " intent=" + intent, e);
2938         }
2939         return success;
2940     }
2941
2942     /**
2943      * This method draws the FolderIcon to an ImageView and then adds and positions that ImageView
2944      * in the DragLayer in the exact absolute location of the original FolderIcon.
2945      */
2946     private void copyFolderIconToImage(FolderIcon fi) {
2947         final int width = fi.getMeasuredWidth();
2948         final int height = fi.getMeasuredHeight();
2949
2950         // Lazy load ImageView, Bitmap and Canvas
2951         if (mFolderIconImageView == null) {
2952             mFolderIconImageView = new ImageView(this);
2953         }
2954         if (mFolderIconBitmap == null || mFolderIconBitmap.getWidth() != width ||
2955                 mFolderIconBitmap.getHeight() != height) {
2956             mFolderIconBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
2957             mFolderIconCanvas = new Canvas(mFolderIconBitmap);
2958         }
2959
2960         DragLayer.LayoutParams lp;
2961         if (mFolderIconImageView.getLayoutParams() instanceof DragLayer.LayoutParams) {
2962             lp = (DragLayer.LayoutParams) mFolderIconImageView.getLayoutParams();
2963         } else {
2964             lp = new DragLayer.LayoutParams(width, height);
2965         }
2966
2967         // The layout from which the folder is being opened may be scaled, adjust the starting
2968         // view size by this scale factor.
2969         float scale = mDragLayer.getDescendantRectRelativeToSelf(fi, mRectForFolderAnimation);
2970         lp.customPosition = true;
2971         lp.x = mRectForFolderAnimation.left;
2972         lp.y = mRectForFolderAnimation.top;
2973         lp.width = (int) (scale * width);
2974         lp.height = (int) (scale * height);
2975
2976         mFolderIconCanvas.drawColor(0, PorterDuff.Mode.CLEAR);
2977         fi.draw(mFolderIconCanvas);
2978         mFolderIconImageView.setImageBitmap(mFolderIconBitmap);
2979         if (fi.getFolder() != null) {
2980             mFolderIconImageView.setPivotX(fi.getFolder().getPivotXForIconAnimation());
2981             mFolderIconImageView.setPivotY(fi.getFolder().getPivotYForIconAnimation());
2982         }
2983         // Just in case this image view is still in the drag layer from a previous animation,
2984         // we remove it and re-add it.
2985         if (mDragLayer.indexOfChild(mFolderIconImageView) != -1) {
2986             mDragLayer.removeView(mFolderIconImageView);
2987         }
2988         mDragLayer.addView(mFolderIconImageView, lp);
2989         if (fi.getFolder() != null) {
2990             fi.getFolder().bringToFront();
2991         }
2992     }
2993
2994     private void growAndFadeOutFolderIcon(FolderIcon fi) {
2995         if (fi == null) return;
2996         PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 0);
2997         PropertyValuesHolder scaleX = PropertyValuesHolder.ofFloat("scaleX", 1.5f);
2998         PropertyValuesHolder scaleY = PropertyValuesHolder.ofFloat("scaleY", 1.5f);
2999
3000         FolderInfo info = (FolderInfo) fi.getTag();
3001         if (info.container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) {
3002             CellLayout cl = (CellLayout) fi.getParent().getParent();
3003             CellLayout.LayoutParams lp = (CellLayout.LayoutParams) fi.getLayoutParams();
3004             cl.setFolderLeaveBehindCell(lp.cellX, lp.cellY);
3005         }
3006
3007         // Push an ImageView copy of the FolderIcon into the DragLayer and hide the original
3008         copyFolderIconToImage(fi);
3009         fi.setVisibility(View.INVISIBLE);
3010
3011         ObjectAnimator oa = LauncherAnimUtils.ofPropertyValuesHolder(mFolderIconImageView, alpha,
3012                 scaleX, scaleY);
3013         if (Utilities.isLmpOrAbove()) {
3014             oa.setInterpolator(new LogDecelerateInterpolator(100, 0));
3015         }
3016         oa.setDuration(getResources().getInteger(R.integer.config_folderExpandDuration));
3017         oa.start();
3018     }
3019
3020     private void shrinkAndFadeInFolderIcon(final FolderIcon fi) {
3021         if (fi == null) return;
3022         PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 1.0f);
3023         PropertyValuesHolder scaleX = PropertyValuesHolder.ofFloat("scaleX", 1.0f);
3024         PropertyValuesHolder scaleY = PropertyValuesHolder.ofFloat("scaleY", 1.0f);
3025
3026         final CellLayout cl = (CellLayout) fi.getParent().getParent();
3027
3028         // We remove and re-draw the FolderIcon in-case it has changed
3029         mDragLayer.removeView(mFolderIconImageView);
3030         copyFolderIconToImage(fi);
3031         ObjectAnimator oa = LauncherAnimUtils.ofPropertyValuesHolder(mFolderIconImageView, alpha,
3032                 scaleX, scaleY);
3033         oa.setDuration(getResources().getInteger(R.integer.config_folderExpandDuration));
3034         oa.addListener(new AnimatorListenerAdapter() {
3035             @Override
3036             public void onAnimationEnd(Animator animation) {
3037                 if (cl != null) {
3038                     cl.clearFolderLeaveBehind();
3039                     // Remove the ImageView copy of the FolderIcon and make the original visible.
3040                     mDragLayer.removeView(mFolderIconImageView);
3041                     fi.setVisibility(View.VISIBLE);
3042                 }
3043             }
3044         });
3045         oa.start();
3046     }
3047
3048     /**
3049      * Opens the user folder described by the specified tag. The opening of the folder
3050      * is animated relative to the specified View. If the View is null, no animation
3051      * is played.
3052      *
3053      * @param folderInfo The FolderInfo describing the folder to open.
3054      */
3055     public void openFolder(FolderIcon folderIcon) {
3056         Folder folder = folderIcon.getFolder();
3057         Folder openFolder = mWorkspace != null ? mWorkspace.getOpenFolder() : null;
3058         if (openFolder != null && openFolder != folder) {
3059             // Close any open folder before opening a folder.
3060             closeFolder();
3061         }
3062
3063         FolderInfo info = folder.mInfo;
3064
3065         info.opened = true;
3066
3067         // While the folder is open, the position of the icon cannot change.
3068         ((CellLayout.LayoutParams) folderIcon.getLayoutParams()).canReorder = false;
3069
3070         // Just verify that the folder hasn't already been added to the DragLayer.
3071         // There was a one-off crash where the folder had a parent already.
3072         if (folder.getParent() == null) {
3073             mDragLayer.addView(folder);
3074             mDragController.addDropTarget((DropTarget) folder);
3075         } else {
3076             Log.w(TAG, "Opening folder (" + folder + ") which already has a parent (" +
3077                     folder.getParent() + ").");
3078         }
3079         folder.animateOpen();
3080         growAndFadeOutFolderIcon(folderIcon);
3081
3082         // Notify the accessibility manager that this folder "window" has appeared and occluded
3083         // the workspace items
3084         folder.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
3085         getDragLayer().sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED);
3086     }
3087
3088     public void closeFolder() {
3089         Folder folder = mWorkspace != null ? mWorkspace.getOpenFolder() : null;
3090         if (folder != null) {
3091             if (folder.isEditingName()) {
3092                 folder.dismissEditingName();
3093             }
3094             closeFolder(folder);
3095         }
3096     }
3097
3098     public void closeFolder(Folder folder) {
3099         folder.getInfo().opened = false;
3100
3101         ViewGroup parent = (ViewGroup) folder.getParent().getParent();
3102         if (parent != null) {
3103             FolderIcon fi = (FolderIcon) mWorkspace.getViewForTag(folder.mInfo);
3104             shrinkAndFadeInFolderIcon(fi);
3105             if (fi != null) {
3106                 ((CellLayout.LayoutParams) fi.getLayoutParams()).canReorder = true;
3107             }
3108         }
3109         folder.animateClosed();
3110
3111         // Notify the accessibility manager that this folder "window" has disappeard and no
3112         // longer occludeds the workspace items
3113         getDragLayer().sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
3114     }
3115
3116     public boolean onLongClick(View v) {
3117         if (!isDraggingEnabled()) return false;
3118         if (isWorkspaceLocked()) return false;
3119         if (mState != State.WORKSPACE) return false;
3120
3121         if (v instanceof Workspace) {
3122             if (!mWorkspace.isInOverviewMode()) {
3123                 if (!mWorkspace.isTouchActive()) {
3124                     showOverviewMode(true);
3125                     mWorkspace.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS,
3126                             HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
3127                     return true;
3128                 } else {
3129                     return false;
3130                 }
3131             } else {
3132                 return false;
3133             }
3134         }
3135
3136         CellLayout.CellInfo longClickCellInfo = null;
3137         View itemUnderLongClick = null;
3138         if (v.getTag() instanceof ItemInfo) {
3139             ItemInfo info = (ItemInfo) v.getTag();
3140             longClickCellInfo = new CellLayout.CellInfo(v, info);
3141             itemUnderLongClick = longClickCellInfo.cell;
3142             resetAddInfo();
3143         }
3144
3145         // The hotseat touch handling does not go through Workspace, and we always allow long press
3146         // on hotseat items.
3147         final boolean inHotseat = isHotseatLayout(v);
3148         if (!mDragController.isDragging()) {
3149             if (itemUnderLongClick == null) {
3150                 // User long pressed on empty space
3151                 mWorkspace.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS,
3152                         HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
3153                 if (mWorkspace.isInOverviewMode()) {
3154                     mWorkspace.startReordering(v);
3155                 } else {
3156                     showOverviewMode(true);
3157                 }
3158             } else {
3159                 final boolean isAllAppsButton = inHotseat && isAllAppsButtonRank(
3160                         mHotseat.getOrderInHotseat(
3161                                 longClickCellInfo.cellX,
3162                                 longClickCellInfo.cellY));
3163                 if (!(itemUnderLongClick instanceof Folder || isAllAppsButton)) {
3164                     // User long pressed on an item
3165                     mWorkspace.startDrag(longClickCellInfo);
3166                 }
3167             }
3168         }
3169         return true;
3170     }
3171
3172     boolean isHotseatLayout(View layout) {
3173         return mHotseat != null && layout != null &&
3174                 (layout instanceof CellLayout) && (layout == mHotseat.getLayout());
3175     }
3176
3177     /**
3178      * Returns the CellLayout of the specified container at the specified screen.
3179      */
3180     public CellLayout getCellLayout(long container, long screenId) {
3181         if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) {
3182             if (mHotseat != null) {
3183                 return mHotseat.getLayout();
3184             } else {
3185                 return null;
3186             }
3187         } else {
3188             return mWorkspace.getScreenWithId(screenId);
3189         }
3190     }
3191
3192     /**
3193      * For overridden classes.
3194      */
3195     public boolean isAllAppsVisible() {
3196         return isAppsViewVisible();
3197     }
3198
3199     public boolean isAppsViewVisible() {
3200         return (mState == State.APPS) || (mOnResumeState == State.APPS);
3201     }
3202
3203     public boolean isWidgetsViewVisible() {
3204         return (mState == State.WIDGETS) || (mOnResumeState == State.WIDGETS);
3205     }
3206
3207     private void setWorkspaceBackground(int background) {
3208         switch (background) {
3209             case WORKSPACE_BACKGROUND_TRANSPARENT:
3210                 getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
3211                 break;
3212             case WORKSPACE_BACKGROUND_BLACK:
3213                 getWindow().setBackgroundDrawable(null);
3214                 break;
3215             default:
3216                 getWindow().setBackgroundDrawable(mWorkspaceBackgroundDrawable);
3217         }
3218     }
3219
3220     protected void changeWallpaperVisiblity(boolean visible) {
3221         int wpflags = visible ? WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER : 0;
3222         int curflags = getWindow().getAttributes().flags
3223                 & WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER;
3224         if (wpflags != curflags) {
3225             getWindow().setFlags(wpflags, WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER);
3226         }
3227         setWorkspaceBackground(visible ? WORKSPACE_BACKGROUND_GRADIENT : WORKSPACE_BACKGROUND_BLACK);
3228     }
3229
3230     @Override
3231     public void onTrimMemory(int level) {
3232         super.onTrimMemory(level);
3233         if (level >= ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN) {
3234             // The widget preview db can result in holding onto over
3235             // 3MB of memory for caching which isn't necessary.
3236             SQLiteDatabase.releaseMemory();
3237
3238             // This clears all widget bitmaps from the widget tray
3239             // TODO(hyunyoungs)
3240         }
3241         if (mLauncherCallbacks != null) {
3242             mLauncherCallbacks.onTrimMemory(level);
3243         }
3244     }
3245
3246     @Override
3247     public void onStateTransitionHideSearchBar() {
3248         // Hide the search bar
3249         if (mSearchDropTargetBar != null) {
3250             mSearchDropTargetBar.hideSearchBar(false /* animated */);
3251         }
3252     }
3253
3254     public void showWorkspace(boolean animated) {
3255         showWorkspace(WorkspaceStateTransitionAnimation.SCROLL_TO_CURRENT_PAGE, animated, null);
3256     }
3257
3258     public void showWorkspace(boolean animated, Runnable onCompleteRunnable) {
3259         showWorkspace(WorkspaceStateTransitionAnimation.SCROLL_TO_CURRENT_PAGE, animated,
3260                 onCompleteRunnable);
3261     }
3262
3263     protected void showWorkspace(int snapToPage, boolean animated) {
3264         showWorkspace(snapToPage, animated, null);
3265     }
3266
3267     void showWorkspace(int snapToPage, boolean animated, Runnable onCompleteRunnable) {
3268         boolean changed = mState != State.WORKSPACE ||
3269                 mWorkspace.getState() != Workspace.State.NORMAL;
3270         if (changed) {
3271             boolean wasInSpringLoadedMode = (mState != State.WORKSPACE);
3272             mWorkspace.setVisibility(View.VISIBLE);
3273             mStateTransitionAnimation.startAnimationToWorkspace(mState, Workspace.State.NORMAL,
3274                     snapToPage, animated, onCompleteRunnable);
3275
3276             // Show the search bar (only animate if we were showing the drop target bar in spring
3277             // loaded mode)
3278             if (mSearchDropTargetBar != null) {
3279                 mSearchDropTargetBar.showSearchBar(animated && wasInSpringLoadedMode);
3280             }
3281
3282             // Set focus to the AppsCustomize button
3283             if (mAllAppsButton != null) {
3284                 mAllAppsButton.requestFocus();
3285             }
3286         }
3287
3288         // Change the state *after* we've called all the transition code
3289         mState = State.WORKSPACE;
3290
3291         // Resume the auto-advance of widgets
3292         mUserPresent = true;
3293         updateAutoAdvanceState();
3294
3295         if (changed) {
3296             // Send an accessibility event to announce the context change
3297             getWindow().getDecorView()
3298                     .sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
3299         }
3300     }
3301
3302     void showOverviewMode(boolean animated) {
3303         mWorkspace.setVisibility(View.VISIBLE);
3304         mStateTransitionAnimation.startAnimationToWorkspace(mState, Workspace.State.OVERVIEW,
3305                 WorkspaceStateTransitionAnimation.SCROLL_TO_CURRENT_PAGE, animated,
3306                 null /* onCompleteRunnable */);
3307         mState = State.WORKSPACE;
3308     }
3309
3310     /**
3311      * Shows the apps view.
3312      */
3313     void showAppsView(boolean animated, boolean resetListToTop, boolean updatePredictedApps) {
3314         if (resetListToTop) {
3315             mAppsView.scrollToTop();
3316         }
3317         if (updatePredictedApps) {
3318             tryAndUpdatePredictedApps();
3319         }
3320         showAppsOrWidgets(animated, State.APPS);
3321     }
3322
3323     /**
3324      * Shows the widgets view.
3325      */
3326     void showWidgetsView(boolean animated, boolean resetPageToZero) {
3327         if (LOGD) Log.d(TAG, "showWidgetsView:" + animated + " resetPageToZero:" + resetPageToZero);
3328         if (resetPageToZero) {
3329             mWidgetsView.scrollToTop();
3330         }
3331         showAppsOrWidgets(animated, State.WIDGETS);
3332
3333         mWidgetsView.post(new Runnable() {
3334             @Override
3335             public void run() {
3336                 mWidgetsView.requestFocus();
3337             }
3338         });
3339     }
3340
3341     /**
3342      * Sets up the transition to show the apps/widgets view.
3343      *
3344      * @return whether the current from and to state allowed this operation
3345      */
3346     // TODO: calling method should use the return value so that when {@code false} is returned
3347     // the workspace transition doesn't fall into invalid state.
3348     private boolean showAppsOrWidgets(boolean animated, State toState) {
3349         if (mState != State.WORKSPACE &&  mState != State.APPS_SPRING_LOADED &&
3350                 mState != State.WIDGETS_SPRING_LOADED) {
3351             return false;
3352         }
3353         if (toState != State.APPS && toState != State.WIDGETS) {
3354             return false;
3355         }
3356
3357         if (toState == State.APPS) {
3358             mStateTransitionAnimation.startAnimationToAllApps(mState, animated);
3359         } else {
3360             mStateTransitionAnimation.startAnimationToWidgets(animated);
3361         }
3362
3363         // Change the state *after* we've called all the transition code
3364         mState = toState;
3365
3366         // Pause the auto-advance of widgets until we are out of AllApps
3367         mUserPresent = false;
3368         updateAutoAdvanceState();
3369         closeFolder();
3370
3371         // Send an accessibility event to announce the context change
3372         getWindow().getDecorView()
3373                 .sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
3374         return true;
3375     }
3376
3377     /**
3378      * Updates the workspace and interaction state on state change, and return the animation to this
3379      * new state.
3380      */
3381     public Animator startWorkspaceStateChangeAnimation(Workspace.State toState, int toPage,
3382             boolean animated, boolean hasOverlaySearchBar, HashMap<View, Integer> layerViews) {
3383         Workspace.State fromState = mWorkspace.getState();
3384         Animator anim = mWorkspace.setStateWithAnimation(toState, toPage, animated,
3385                 hasOverlaySearchBar, layerViews);
3386         updateInteraction(fromState, toState);
3387         return anim;
3388     }
3389
3390     public void enterSpringLoadedDragMode() {
3391         if (LOGD) Log.d(TAG, String.format("enterSpringLoadedDragMode [mState=%s", mState.name()));
3392         if (mState == State.WORKSPACE || mState == State.APPS_SPRING_LOADED ||
3393                 mState == State.WIDGETS_SPRING_LOADED) {
3394             return;
3395         }
3396
3397         mStateTransitionAnimation.startAnimationToWorkspace(mState, Workspace.State.SPRING_LOADED,
3398                 WorkspaceStateTransitionAnimation.SCROLL_TO_CURRENT_PAGE, true /* animated */,
3399                 null /* onCompleteRunnable */);
3400         mState = isAppsViewVisible() ? State.APPS_SPRING_LOADED : State.WIDGETS_SPRING_LOADED;
3401     }
3402
3403     public void exitSpringLoadedDragModeDelayed(final boolean successfulDrop, int delay,
3404             final Runnable onCompleteRunnable) {
3405         if (mState != State.APPS_SPRING_LOADED && mState != State.WIDGETS_SPRING_LOADED) return;
3406
3407         mHandler.postDelayed(new Runnable() {
3408             @Override
3409             public void run() {
3410                 if (successfulDrop) {
3411                     // TODO(hyunyoungs): verify if this hack is still needed, if not, delete.
3412                     //
3413                     // Before we show workspace, hide all apps again because
3414                     // exitSpringLoadedDragMode made it visible. This is a bit hacky; we should
3415                     // clean up our state transition functions
3416                     mWidgetsView.setVisibility(View.GONE);
3417                     showWorkspace(true, onCompleteRunnable);
3418                 } else {
3419                     exitSpringLoadedDragMode();
3420                 }
3421             }
3422         }, delay);
3423     }
3424
3425     void exitSpringLoadedDragMode() {
3426         if (mState == State.APPS_SPRING_LOADED) {
3427             showAppsView(true /* animated */, false /* resetListToTop */,
3428                     false /* updatePredictedApps */);
3429         } else if (mState == State.WIDGETS_SPRING_LOADED) {
3430             showWidgetsView(true, false);
3431         }
3432     }
3433
3434     /**
3435      * Updates the set of predicted apps if it hasn't been updated since the last time Launcher was
3436      * resumed.
3437      */
3438     private void tryAndUpdatePredictedApps() {
3439         if (mLauncherCallbacks != null) {
3440             List<ComponentKey> apps = mLauncherCallbacks.getPredictedApps();
3441             if (apps != null) {
3442                 mAppsView.setPredictedApps(apps);
3443             }
3444         }
3445     }
3446
3447     void lockAllApps() {
3448         // TODO
3449     }
3450
3451     void unlockAllApps() {
3452         // TODO
3453     }
3454
3455     protected void disableVoiceButtonProxy(boolean disable) {
3456         // NO-OP
3457     }
3458
3459     public View getOrCreateQsbBar() {
3460         if (mLauncherCallbacks != null && mLauncherCallbacks.providesSearch()) {
3461             return mLauncherCallbacks.getQsbBar();
3462         }
3463
3464         if (mQsb == null) {
3465             AppWidgetProviderInfo searchProvider = Utilities.getSearchWidgetProvider(this);
3466             if (searchProvider == null) {
3467                 return null;
3468             }
3469
3470             Bundle opts = new Bundle();
3471             opts.putInt(AppWidgetManager.OPTION_APPWIDGET_HOST_CATEGORY,
3472                     AppWidgetProviderInfo.WIDGET_CATEGORY_SEARCHBOX);
3473
3474             SharedPreferences sp = getSharedPreferences(
3475                     LauncherAppState.getSharedPreferencesKey(), MODE_PRIVATE);
3476             int widgetId = sp.getInt(QSB_WIDGET_ID, -1);
3477             AppWidgetProviderInfo widgetInfo = mAppWidgetManager.getAppWidgetInfo(widgetId);
3478             if (!searchProvider.provider.flattenToString().equals(
3479                     sp.getString(QSB_WIDGET_PROVIDER, null))
3480                     || (widgetInfo == null)
3481                     || !widgetInfo.provider.equals(searchProvider.provider)) {
3482                 // A valid widget is not already bound.
3483                 if (widgetId > -1) {
3484                     mAppWidgetHost.deleteAppWidgetId(widgetId);
3485                     widgetId = -1;
3486                 }
3487
3488                 // Try to bind a new widget
3489                 widgetId = mAppWidgetHost.allocateAppWidgetId();
3490
3491                 if (!AppWidgetManagerCompat.getInstance(this)
3492                         .bindAppWidgetIdIfAllowed(widgetId, searchProvider, opts)) {
3493                     mAppWidgetHost.deleteAppWidgetId(widgetId);
3494                     widgetId = -1;
3495                 }
3496
3497                 sp.edit()
3498                     .putInt(QSB_WIDGET_ID, widgetId)
3499                     .putString(QSB_WIDGET_PROVIDER, searchProvider.provider.flattenToString())
3500                     .commit();
3501             }
3502
3503             if (widgetId != -1) {
3504                 mQsb = mAppWidgetHost.createView(this, widgetId, searchProvider);
3505                 mQsb.updateAppWidgetOptions(opts);
3506                 mQsb.setPadding(0, 0, 0, 0);
3507                 mSearchDropTargetBar.addView(mQsb);
3508                 mSearchDropTargetBar.setQsbSearchBar(mQsb);
3509             }
3510         }
3511         return mQsb;
3512     }
3513
3514     private void reinflateQSBIfNecessary() {
3515         if (mQsb instanceof LauncherAppWidgetHostView &&
3516                 ((LauncherAppWidgetHostView) mQsb).isReinflateRequired()) {
3517             mSearchDropTargetBar.removeView(mQsb);
3518             mQsb = null;
3519             mSearchDropTargetBar.setQsbSearchBar(getOrCreateQsbBar());
3520         }
3521     }
3522
3523     @Override
3524     public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
3525         final boolean result = super.dispatchPopulateAccessibilityEvent(event);
3526         final List<CharSequence> text = event.getText();
3527         text.clear();
3528         // Populate event with a fake title based on the current state.
3529         if (mState == State.APPS) {
3530             text.add(getString(R.string.all_apps_button_label));
3531         } else if (mState == State.WIDGETS) {
3532             text.add(getString(R.string.widget_button_text));
3533         } else if (mWorkspace != null) {
3534             text.add(mWorkspace.getCurrentPageDescription());
3535         } else {
3536             text.add(getString(R.string.all_apps_home_button_label));
3537         }
3538         return result;
3539     }
3540
3541     /**
3542      * Receives notifications when system dialogs are to be closed.
3543      */
3544     @Thunk class CloseSystemDialogsIntentReceiver extends BroadcastReceiver {
3545         @Override
3546         public void onReceive(Context context, Intent intent) {
3547             closeSystemDialogs();
3548         }
3549     }
3550
3551     /**
3552      * If the activity is currently paused, signal that we need to run the passed Runnable
3553      * in onResume.
3554      *
3555      * This needs to be called from incoming places where resources might have been loaded
3556      * while the activity is paused. That is because the Configuration (e.g., rotation)  might be
3557      * wrong when we're not running, and if the activity comes back to what the configuration was
3558      * when we were paused, activity is not restarted.
3559      *
3560      * Implementation of the method from LauncherModel.Callbacks.
3561      *
3562      * @return {@code true} if we are currently paused. The caller might be able to skip some work
3563      */
3564     @Thunk boolean waitUntilResume(Runnable run, boolean deletePreviousRunnables) {
3565         if (mPaused) {
3566             if (LOGD) Log.d(TAG, "Deferring update until onResume");
3567             if (deletePreviousRunnables) {
3568                 while (mBindOnResumeCallbacks.remove(run)) {
3569                 }
3570             }
3571             mBindOnResumeCallbacks.add(run);
3572             return true;
3573         } else {
3574             return false;
3575         }
3576     }
3577
3578     private boolean waitUntilResume(Runnable run) {
3579         return waitUntilResume(run, false);
3580     }
3581
3582     public void addOnResumeCallback(Runnable run) {
3583         mOnResumeCallbacks.add(run);
3584     }
3585
3586     /**
3587      * If the activity is currently paused, signal that we need to re-run the loader
3588      * in onResume.
3589      *
3590      * This needs to be called from incoming places where resources might have been loaded
3591      * while we are paused.  That is becaues the Configuration might be wrong
3592      * when we're not running, and if it comes back to what it was when we
3593      * were paused, we are not restarted.
3594      *
3595      * Implementation of the method from LauncherModel.Callbacks.
3596      *
3597      * @return true if we are currently paused.  The caller might be able to
3598      * skip some work in that case since we will come back again.
3599      */
3600     public boolean setLoadOnResume() {
3601         if (mPaused) {
3602             if (LOGD) Log.d(TAG, "setLoadOnResume");
3603             mOnResumeNeedsLoad = true;
3604             return true;
3605         } else {
3606             return false;
3607         }
3608     }
3609
3610     /**
3611      * Implementation of the method from LauncherModel.Callbacks.
3612      */
3613     public int getCurrentWorkspaceScreen() {
3614         if (mWorkspace != null) {
3615             return mWorkspace.getCurrentPage();
3616         } else {
3617             return SCREEN_COUNT / 2;
3618         }
3619     }
3620
3621     /**
3622      * Refreshes the shortcuts shown on the workspace.
3623      *
3624      * Implementation of the method from LauncherModel.Callbacks.
3625      */
3626     public void startBinding() {
3627         setWorkspaceLoading(true);
3628
3629         // If we're starting binding all over again, clear any bind calls we'd postponed in
3630         // the past (see waitUntilResume) -- we don't need them since we're starting binding
3631         // from scratch again
3632         mBindOnResumeCallbacks.clear();
3633
3634         // Clear the workspace because it's going to be rebound
3635         mWorkspace.clearDropTargets();
3636         mWorkspace.removeAllWorkspaceScreens();
3637
3638         mWidgetsToAdvance.clear();
3639         if (mHotseat != null) {
3640             mHotseat.resetLayout();
3641         }
3642     }
3643
3644     @Override
3645     public void bindScreens(ArrayList<Long> orderedScreenIds) {
3646         bindAddScreens(orderedScreenIds);
3647
3648         // If there are no screens, we need to have an empty screen
3649         if (orderedScreenIds.size() == 0) {
3650             mWorkspace.addExtraEmptyScreen();
3651         }
3652
3653         // Create the custom content page (this call updates mDefaultScreen which calls
3654         // setCurrentPage() so ensure that all pages are added before calling this).
3655         if (hasCustomContentToLeft()) {
3656             mWorkspace.createCustomContentContainer();
3657             populateCustomContentContainer();
3658         }
3659     }
3660
3661     @Override
3662     public void bindAddScreens(ArrayList<Long> orderedScreenIds) {
3663         int count = orderedScreenIds.size();
3664         for (int i = 0; i < count; i++) {
3665             mWorkspace.insertNewWorkspaceScreenBeforeEmptyScreen(orderedScreenIds.get(i));
3666         }
3667     }
3668
3669     private boolean shouldShowWeightWatcher() {
3670         String spKey = LauncherAppState.getSharedPreferencesKey();
3671         SharedPreferences sp = getSharedPreferences(spKey, Context.MODE_PRIVATE);
3672         boolean show = sp.getBoolean(SHOW_WEIGHT_WATCHER, SHOW_WEIGHT_WATCHER_DEFAULT);
3673
3674         return show;
3675     }
3676
3677     private void toggleShowWeightWatcher() {
3678         String spKey = LauncherAppState.getSharedPreferencesKey();
3679         SharedPreferences sp = getSharedPreferences(spKey, Context.MODE_PRIVATE);
3680         boolean show = sp.getBoolean(SHOW_WEIGHT_WATCHER, true);
3681
3682         show = !show;
3683
3684         SharedPreferences.Editor editor = sp.edit();
3685         editor.putBoolean(SHOW_WEIGHT_WATCHER, show);
3686         editor.commit();
3687
3688         if (mWeightWatcher != null) {
3689             mWeightWatcher.setVisibility(show ? View.VISIBLE : View.GONE);
3690         }
3691     }
3692
3693     public void bindAppsAdded(final ArrayList<Long> newScreens,
3694                               final ArrayList<ItemInfo> addNotAnimated,
3695                               final ArrayList<ItemInfo> addAnimated,
3696                               final ArrayList<AppInfo> addedApps) {
3697         Runnable r = new Runnable() {
3698             public void run() {
3699                 bindAppsAdded(newScreens, addNotAnimated, addAnimated, addedApps);
3700             }
3701         };
3702         if (waitUntilResume(r)) {
3703             return;
3704         }
3705
3706         // Add the new screens
3707         if (newScreens != null) {
3708             bindAddScreens(newScreens);
3709         }
3710
3711         // We add the items without animation on non-visible pages, and with
3712         // animations on the new page (which we will try and snap to).
3713         if (addNotAnimated != null && !addNotAnimated.isEmpty()) {
3714             bindItems(addNotAnimated, 0,
3715                     addNotAnimated.size(), false);
3716         }
3717         if (addAnimated != null && !addAnimated.isEmpty()) {
3718             bindItems(addAnimated, 0,
3719                     addAnimated.size(), true);
3720         }
3721
3722         // Remove the extra empty screen
3723         mWorkspace.removeExtraEmptyScreen(false, false);
3724
3725         if (addedApps != null && mAppsView != null) {
3726             mAppsView.addApps(addedApps);
3727         }
3728     }
3729
3730     /**
3731      * Bind the items start-end from the list.
3732      *
3733      * Implementation of the method from LauncherModel.Callbacks.
3734      */
3735     public void bindItems(final ArrayList<ItemInfo> shortcuts, final int start, final int end,
3736                           final boolean forceAnimateIcons) {
3737         Runnable r = new Runnable() {
3738             public void run() {
3739                 bindItems(shortcuts, start, end, forceAnimateIcons);
3740             }
3741         };
3742         if (waitUntilResume(r)) {
3743             return;
3744         }
3745
3746         // Get the list of added shortcuts and intersect them with the set of shortcuts here
3747         final AnimatorSet anim = LauncherAnimUtils.createAnimatorSet();
3748         final Collection<Animator> bounceAnims = new ArrayList<Animator>();
3749         final boolean animateIcons = forceAnimateIcons && canRunNewAppsAnimation();
3750         Workspace workspace = mWorkspace;
3751         long newShortcutsScreenId = -1;
3752         for (int i = start; i < end; i++) {
3753             final ItemInfo item = shortcuts.get(i);
3754
3755             // Short circuit if we are loading dock items for a configuration which has no dock
3756             if (item.container == LauncherSettings.Favorites.CONTAINER_HOTSEAT &&
3757                     mHotseat == null) {
3758                 continue;
3759             }
3760
3761             switch (item.itemType) {
3762                 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION:
3763                 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
3764                     ShortcutInfo info = (ShortcutInfo) item;
3765                     View shortcut = createShortcut(info);
3766
3767                     /*
3768                      * TODO: FIX collision case
3769                      */
3770                     if (item.container == LauncherSettings.Favorites.CONTAINER_DESKTOP) {
3771                         CellLayout cl = mWorkspace.getScreenWithId(item.screenId);
3772                         if (cl != null && cl.isOccupied(item.cellX, item.cellY)) {
3773                             View v = cl.getChildAt(item.cellX, item.cellY);
3774                             Object tag = v.getTag();
3775                             String desc = "Collision while binding workspace item: " + item
3776                                     + ". Collides with " + tag;
3777                             if (LauncherAppState.isDogfoodBuild()) {
3778                                 throw (new RuntimeException(desc));
3779                             } else {
3780                                 Log.d(TAG, desc);
3781                             }
3782                         }
3783                     }
3784
3785                     workspace.addInScreenFromBind(shortcut, item.container, item.screenId, item.cellX,
3786                             item.cellY, 1, 1);
3787                     if (animateIcons) {
3788                         // Animate all the applications up now
3789                         shortcut.setAlpha(0f);
3790                         shortcut.setScaleX(0f);
3791                         shortcut.setScaleY(0f);
3792                         bounceAnims.add(createNewAppBounceAnimation(shortcut, i));
3793                         newShortcutsScreenId = item.screenId;
3794                     }
3795                     break;
3796                 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER:
3797                     FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon, this,
3798                             (ViewGroup) workspace.getChildAt(workspace.getCurrentPage()),
3799                             (FolderInfo) item, mIconCache);
3800                     workspace.addInScreenFromBind(newFolder, item.container, item.screenId, item.cellX,
3801                             item.cellY, 1, 1);
3802                     break;
3803                 default:
3804                     throw new RuntimeException("Invalid Item Type");
3805             }
3806         }
3807
3808         if (animateIcons) {
3809             // Animate to the correct page
3810             if (newShortcutsScreenId > -1) {
3811                 long currentScreenId = mWorkspace.getScreenIdForPageIndex(mWorkspace.getNextPage());
3812                 final int newScreenIndex = mWorkspace.getPageIndexForScreenId(newShortcutsScreenId);
3813                 final Runnable startBounceAnimRunnable = new Runnable() {
3814                     public void run() {
3815                         anim.playTogether(bounceAnims);
3816                         anim.start();
3817                     }
3818                 };
3819                 if (newShortcutsScreenId != currentScreenId) {
3820                     // We post the animation slightly delayed to prevent slowdowns
3821                     // when we are loading right after we return to launcher.
3822                     mWorkspace.postDelayed(new Runnable() {
3823                         public void run() {
3824                             if (mWorkspace != null) {
3825                                 mWorkspace.snapToPage(newScreenIndex);
3826                                 mWorkspace.postDelayed(startBounceAnimRunnable,
3827                                         NEW_APPS_ANIMATION_DELAY);
3828                             }
3829                         }
3830                     }, NEW_APPS_PAGE_MOVE_DELAY);
3831                 } else {
3832                     mWorkspace.postDelayed(startBounceAnimRunnable, NEW_APPS_ANIMATION_DELAY);
3833                 }
3834             }
3835         }
3836         workspace.requestLayout();
3837     }
3838
3839     /**
3840      * Implementation of the method from LauncherModel.Callbacks.
3841      */
3842     public void bindFolders(final LongArrayMap<FolderInfo> folders) {
3843         Runnable r = new Runnable() {
3844             public void run() {
3845                 bindFolders(folders);
3846             }
3847         };
3848         if (waitUntilResume(r)) {
3849             return;
3850         }
3851         sFolders = folders.clone();
3852     }
3853
3854     /**
3855      * Add the views for a widget to the workspace.
3856      *
3857      * Implementation of the method from LauncherModel.Callbacks.
3858      */
3859     public void bindAppWidget(final LauncherAppWidgetInfo item) {
3860         Runnable r = new Runnable() {
3861             public void run() {
3862                 bindAppWidget(item);
3863             }
3864         };
3865         if (waitUntilResume(r)) {
3866             return;
3867         }
3868
3869         final long start = DEBUG_WIDGETS ? SystemClock.uptimeMillis() : 0;
3870         if (DEBUG_WIDGETS) {
3871             Log.d(TAG, "bindAppWidget: " + item);
3872         }
3873         final Workspace workspace = mWorkspace;
3874
3875         LauncherAppWidgetProviderInfo appWidgetInfo =
3876                 LauncherModel.getProviderInfo(this, item.providerName, item.user);
3877
3878         if (!mIsSafeModeEnabled
3879                 && ((item.restoreStatus & LauncherAppWidgetInfo.FLAG_PROVIDER_NOT_READY) == 0)
3880                 && ((item.restoreStatus & LauncherAppWidgetInfo.FLAG_ID_NOT_VALID) != 0)) {
3881             if (appWidgetInfo == null) {
3882                 if (DEBUG_WIDGETS) {
3883                     Log.d(TAG, "Removing restored widget: id=" + item.appWidgetId
3884                             + " belongs to component " + item.providerName
3885                             + ", as the povider is null");
3886                 }
3887                 LauncherModel.deleteItemFromDatabase(this, item);
3888                 return;
3889             }
3890             // Note: This assumes that the id remap broadcast is received before this step.
3891             // If that is not the case, the id remap will be ignored and user may see the
3892             // click to setup view.
3893             PendingAddWidgetInfo pendingInfo = new PendingAddWidgetInfo(this, appWidgetInfo, null);
3894             pendingInfo.spanX = item.spanX;
3895             pendingInfo.spanY = item.spanY;
3896             pendingInfo.minSpanX = item.minSpanX;
3897             pendingInfo.minSpanY = item.minSpanY;
3898             Bundle options = null;
3899                     WidgetHostViewLoader.getDefaultOptionsForWidget(this, pendingInfo);
3900
3901             int newWidgetId = mAppWidgetHost.allocateAppWidgetId();
3902             boolean success = mAppWidgetManager.bindAppWidgetIdIfAllowed(
3903                     newWidgetId, appWidgetInfo, options);
3904
3905             // TODO consider showing a permission dialog when the widget is clicked.
3906             if (!success) {
3907                 mAppWidgetHost.deleteAppWidgetId(newWidgetId);
3908                 if (DEBUG_WIDGETS) {
3909                     Log.d(TAG, "Removing restored widget: id=" + item.appWidgetId
3910                             + " belongs to component " + item.providerName
3911                             + ", as the launcher is unable to bing a new widget id");
3912                 }
3913                 LauncherModel.deleteItemFromDatabase(this, item);
3914                 return;
3915             }
3916
3917             item.appWidgetId = newWidgetId;
3918
3919             // If the widget has a configure activity, it is still needs to set it up, otherwise
3920             // the widget is ready to go.
3921             item.restoreStatus = (appWidgetInfo.configure == null)
3922                     ? LauncherAppWidgetInfo.RESTORE_COMPLETED
3923                     : LauncherAppWidgetInfo.FLAG_UI_NOT_READY;
3924
3925             LauncherModel.updateItemInDatabase(this, item);
3926         }
3927
3928         if (!mIsSafeModeEnabled && item.restoreStatus == LauncherAppWidgetInfo.RESTORE_COMPLETED) {
3929             final int appWidgetId = item.appWidgetId;
3930             if (DEBUG_WIDGETS) {
3931                 Log.d(TAG, "bindAppWidget: id=" + item.appWidgetId + " belongs to component "
3932                         + appWidgetInfo.provider);
3933             }
3934
3935             item.hostView = mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
3936         } else {
3937             appWidgetInfo = null;
3938             PendingAppWidgetHostView view = new PendingAppWidgetHostView(this, item,
3939                     mIsSafeModeEnabled);
3940             view.updateIcon(mIconCache);
3941             item.hostView = view;
3942             item.hostView.updateAppWidget(null);
3943             item.hostView.setOnClickListener(this);
3944         }
3945
3946         item.hostView.setTag(item);
3947         item.onBindAppWidget(this);
3948
3949         workspace.addInScreen(item.hostView, item.container, item.screenId, item.cellX,
3950                 item.cellY, item.spanX, item.spanY, false);
3951         if (!item.isCustomWidget()) {
3952             addWidgetToAutoAdvanceIfNeeded(item.hostView, appWidgetInfo);
3953         }
3954
3955         workspace.requestLayout();
3956
3957         if (DEBUG_WIDGETS) {
3958             Log.d(TAG, "bound widget id="+item.appWidgetId+" in "
3959                     + (SystemClock.uptimeMillis()-start) + "ms");
3960         }
3961     }
3962
3963     /**
3964      * Restores a pending widget.
3965      *
3966      * @param appWidgetId The app widget id
3967      * @param cellInfo The position on screen where to create the widget.
3968      */
3969     private void completeRestoreAppWidget(final int appWidgetId) {
3970         LauncherAppWidgetHostView view = mWorkspace.getWidgetForAppWidgetId(appWidgetId);
3971         if ((view == null) || !(view instanceof PendingAppWidgetHostView)) {
3972             Log.e(TAG, "Widget update called, when the widget no longer exists.");
3973             return;
3974         }
3975
3976         LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) view.getTag();
3977         info.restoreStatus = LauncherAppWidgetInfo.RESTORE_COMPLETED;
3978
3979         mWorkspace.reinflateWidgetsIfNecessary();
3980         LauncherModel.updateItemInDatabase(this, info);
3981     }
3982
3983     public void onPageBoundSynchronously(int page) {
3984         mSynchronouslyBoundPages.add(page);
3985     }
3986
3987     /**
3988      * Callback saying that there aren't any more items to bind.
3989      *
3990      * Implementation of the method from LauncherModel.Callbacks.
3991      */
3992     public void finishBindingItems() {
3993         Runnable r = new Runnable() {
3994             public void run() {
3995                 finishBindingItems();
3996             }
3997         };
3998         if (waitUntilResume(r)) {
3999             return;
4000         }
4001         if (mSavedState != null) {
4002             if (!mWorkspace.hasFocus()) {
4003                 mWorkspace.getChildAt(mWorkspace.getCurrentPage()).requestFocus();
4004             }
4005             mSavedState = null;
4006         }
4007
4008         mWorkspace.restoreInstanceStateForRemainingPages();
4009
4010         setWorkspaceLoading(false);
4011         sendLoadingCompleteBroadcastIfNecessary();
4012
4013         // If we received the result of any pending adds while the loader was running (e.g. the
4014         // widget configuration forced an orientation change), process them now.
4015         if (sPendingAddItem != null) {
4016             final long screenId = completeAdd(sPendingAddItem);
4017
4018             // TODO: this moves the user to the page where the pending item was added. Ideally,
4019             // the screen would be guaranteed to exist after bind, and the page would be set through
4020             // the workspace restore process.
4021             mWorkspace.post(new Runnable() {
4022                 @Override
4023                 public void run() {
4024                     mWorkspace.snapToScreenId(screenId);
4025                 }
4026             });
4027             sPendingAddItem = null;
4028         }
4029
4030         InstallShortcutReceiver.disableAndFlushInstallQueue(this);
4031
4032         if (mLauncherCallbacks != null) {
4033             mLauncherCallbacks.finishBindingItems(false);
4034         }
4035     }
4036
4037     private void sendLoadingCompleteBroadcastIfNecessary() {
4038         if (!mSharedPrefs.getBoolean(FIRST_LOAD_COMPLETE, false)) {
4039             String permission =
4040                     getResources().getString(R.string.receive_first_load_broadcast_permission);
4041             Intent intent = new Intent(ACTION_FIRST_LOAD_COMPLETE);
4042             sendBroadcast(intent, permission);
4043             SharedPreferences.Editor editor = mSharedPrefs.edit();
4044             editor.putBoolean(FIRST_LOAD_COMPLETE, true);
4045             editor.apply();
4046         }
4047     }
4048
4049     public boolean isAllAppsButtonRank(int rank) {
4050         if (mHotseat != null) {
4051             return mHotseat.isAllAppsButtonRank(rank);
4052         }
4053         return false;
4054     }
4055
4056     private boolean canRunNewAppsAnimation() {
4057         long diff = System.currentTimeMillis() - mDragController.getLastGestureUpTime();
4058         return diff > (NEW_APPS_ANIMATION_INACTIVE_TIMEOUT_SECONDS * 1000);
4059     }
4060
4061     private ValueAnimator createNewAppBounceAnimation(View v, int i) {
4062         ValueAnimator bounceAnim = LauncherAnimUtils.ofPropertyValuesHolder(v,
4063                 PropertyValuesHolder.ofFloat("alpha", 1f),
4064                 PropertyValuesHolder.ofFloat("scaleX", 1f),
4065                 PropertyValuesHolder.ofFloat("scaleY", 1f));
4066         bounceAnim.setDuration(InstallShortcutReceiver.NEW_SHORTCUT_BOUNCE_DURATION);
4067         bounceAnim.setStartDelay(i * InstallShortcutReceiver.NEW_SHORTCUT_STAGGER_DELAY);
4068         bounceAnim.setInterpolator(new OvershootInterpolator(BOUNCE_ANIMATION_TENSION));
4069         return bounceAnim;
4070     }
4071
4072     public boolean useVerticalBarLayout() {
4073         return mDeviceProfile.isVerticalBarLayout();
4074     }
4075
4076     protected Rect getSearchBarBounds() {
4077         return mDeviceProfile.getSearchBarBounds(Utilities.isRtl(getResources()));
4078     }
4079
4080     public void bindSearchablesChanged() {
4081         if (mSearchDropTargetBar == null) {
4082             return;
4083         }
4084         if (mQsb != null) {
4085             mSearchDropTargetBar.removeView(mQsb);
4086             mQsb = null;
4087         }
4088         mSearchDropTargetBar.setQsbSearchBar(getOrCreateQsbBar());
4089     }
4090
4091     /**
4092      * A runnable that we can dequeue and re-enqueue when all applications are bound (to prevent
4093      * multiple calls to bind the same list.)
4094      */
4095     @Thunk ArrayList<AppInfo> mTmpAppsList;
4096     private Runnable mBindAllApplicationsRunnable = new Runnable() {
4097         public void run() {
4098             bindAllApplications(mTmpAppsList);
4099             mTmpAppsList = null;
4100         }
4101     };
4102
4103     /**
4104      * Add the icons for all apps.
4105      *
4106      * Implementation of the method from LauncherModel.Callbacks.
4107      */
4108     public void bindAllApplications(final ArrayList<AppInfo> apps) {
4109         if (waitUntilResume(mBindAllApplicationsRunnable, true)) {
4110             mTmpAppsList = apps;
4111             return;
4112         }
4113
4114         if (mAppsView != null) {
4115             mAppsView.setApps(apps);
4116         }
4117         if (mLauncherCallbacks != null) {
4118             mLauncherCallbacks.bindAllApplications(apps);
4119         }
4120     }
4121
4122     /**
4123      * A package was updated.
4124      *
4125      * Implementation of the method from LauncherModel.Callbacks.
4126      */
4127     public void bindAppsUpdated(final ArrayList<AppInfo> apps) {
4128         Runnable r = new Runnable() {
4129             public void run() {
4130                 bindAppsUpdated(apps);
4131             }
4132         };
4133         if (waitUntilResume(r)) {
4134             return;
4135         }
4136
4137         if (mAppsView != null) {
4138             mAppsView.updateApps(apps);
4139         }
4140     }
4141
4142     @Override
4143     public void bindWidgetsRestored(final ArrayList<LauncherAppWidgetInfo> widgets) {
4144         Runnable r = new Runnable() {
4145             public void run() {
4146                 bindWidgetsRestored(widgets);
4147             }
4148         };
4149         if (waitUntilResume(r)) {
4150             return;
4151         }
4152         mWorkspace.widgetsRestored(widgets);
4153     }
4154
4155     /**
4156      * Some shortcuts were updated in the background.
4157      *
4158      * Implementation of the method from LauncherModel.Callbacks.
4159      */
4160     @Override
4161     public void bindShortcutsChanged(final ArrayList<ShortcutInfo> updated,
4162             final ArrayList<ShortcutInfo> removed, final UserHandleCompat user) {
4163         Runnable r = new Runnable() {
4164             public void run() {
4165                 bindShortcutsChanged(updated, removed, user);
4166             }
4167         };
4168         if (waitUntilResume(r)) {
4169             return;
4170         }
4171
4172         if (!updated.isEmpty()) {
4173             mWorkspace.updateShortcuts(updated);
4174         }
4175
4176         if (!removed.isEmpty()) {
4177             HashSet<ComponentName> removedComponents = new HashSet<ComponentName>();
4178             for (ShortcutInfo si : removed) {
4179                 removedComponents.add(si.getTargetComponent());
4180             }
4181             mWorkspace.removeItemsByComponentName(removedComponents, user);
4182             // Notify the drag controller
4183             mDragController.onAppsRemoved(new ArrayList<String>(), removedComponents);
4184         }
4185     }
4186
4187     /**
4188      * Update the state of a package, typically related to install state.
4189      *
4190      * Implementation of the method from LauncherModel.Callbacks.
4191      */
4192     @Override
4193     public void bindRestoreItemsChange(final HashSet<ItemInfo> updates) {
4194         Runnable r = new Runnable() {
4195             public void run() {
4196                 bindRestoreItemsChange(updates);
4197             }
4198         };
4199         if (waitUntilResume(r)) {
4200             return;
4201         }
4202
4203         mWorkspace.updateRestoreItems(updates);
4204     }
4205
4206     /**
4207      * A package was uninstalled.  We take both the super set of packageNames
4208      * in addition to specific applications to remove, the reason being that
4209      * this can be called when a package is updated as well.  In that scenario,
4210      * we only remove specific components from the workspace, where as
4211      * package-removal should clear all items by package name.
4212      *
4213      * @param reason if non-zero, the icons are not permanently removed, rather marked as disabled.
4214      * Implementation of the method from LauncherModel.Callbacks.
4215      */
4216     @Override
4217     public void bindComponentsRemoved(final ArrayList<String> packageNames,
4218             final ArrayList<AppInfo> appInfos, final UserHandleCompat user, final int reason) {
4219         Runnable r = new Runnable() {
4220             public void run() {
4221                 bindComponentsRemoved(packageNames, appInfos, user, reason);
4222             }
4223         };
4224         if (waitUntilResume(r)) {
4225             return;
4226         }
4227
4228         if (reason == 0) {
4229             HashSet<ComponentName> removedComponents = new HashSet<ComponentName>();
4230             for (AppInfo info : appInfos) {
4231                 removedComponents.add(info.componentName);
4232             }
4233             if (!packageNames.isEmpty()) {
4234                 mWorkspace.removeItemsByPackageName(packageNames, user);
4235             }
4236             if (!removedComponents.isEmpty()) {
4237                 mWorkspace.removeItemsByComponentName(removedComponents, user);
4238             }
4239             // Notify the drag controller
4240             mDragController.onAppsRemoved(packageNames, removedComponents);
4241
4242         } else {
4243             mWorkspace.disableShortcutsByPackageName(packageNames, user, reason);
4244         }
4245
4246         // Update AllApps
4247         if (mAppsView != null) {
4248             mAppsView.removeApps(appInfos);
4249         }
4250     }
4251
4252     private Runnable mBindPackagesUpdatedRunnable = new Runnable() {
4253             public void run() {
4254                 bindAllPackages(mWidgetsModel);
4255             }
4256         };
4257
4258     @Override
4259     public void bindAllPackages(final WidgetsModel model) {
4260         if (waitUntilResume(mBindPackagesUpdatedRunnable, true)) {
4261             mWidgetsModel = model;
4262             return;
4263         }
4264
4265         if (mWidgetsView != null && model != null) {
4266             mWidgetsView.addWidgets(model);
4267             mWidgetsModel = null;
4268         }
4269     }
4270
4271     private int mapConfigurationOriActivityInfoOri(int configOri) {
4272         final Display d = getWindowManager().getDefaultDisplay();
4273         int naturalOri = Configuration.ORIENTATION_LANDSCAPE;
4274         switch (d.getRotation()) {
4275         case Surface.ROTATION_0:
4276         case Surface.ROTATION_180:
4277             // We are currently in the same basic orientation as the natural orientation
4278             naturalOri = configOri;
4279             break;
4280         case Surface.ROTATION_90:
4281         case Surface.ROTATION_270:
4282             // We are currently in the other basic orientation to the natural orientation
4283             naturalOri = (configOri == Configuration.ORIENTATION_LANDSCAPE) ?
4284                     Configuration.ORIENTATION_PORTRAIT : Configuration.ORIENTATION_LANDSCAPE;
4285             break;
4286         }
4287
4288         int[] oriMap = {
4289                 ActivityInfo.SCREEN_ORIENTATION_PORTRAIT,
4290                 ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE,
4291                 ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT,
4292                 ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE
4293         };
4294         // Since the map starts at portrait, we need to offset if this device's natural orientation
4295         // is landscape.
4296         int indexOffset = 0;
4297         if (naturalOri == Configuration.ORIENTATION_LANDSCAPE) {
4298             indexOffset = 1;
4299         }
4300         return oriMap[(d.getRotation() + indexOffset) % 4];
4301     }
4302
4303     public void lockScreenOrientation() {
4304         if (mRotationEnabled) {
4305             if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR2) {
4306                 setRequestedOrientation(mapConfigurationOriActivityInfoOri(getResources()
4307                         .getConfiguration().orientation));
4308             } else {
4309                 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LOCKED);
4310             }
4311         }
4312     }
4313
4314     public void unlockScreenOrientation(boolean immediate) {
4315         if (mRotationEnabled) {
4316             if (immediate) {
4317                 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
4318             } else {
4319                 mHandler.postDelayed(new Runnable() {
4320                     public void run() {
4321                         setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
4322                     }
4323                 }, mRestoreScreenOrientationDelay);
4324             }
4325         }
4326     }
4327
4328     protected boolean isLauncherPreinstalled() {
4329         if (mLauncherCallbacks != null) {
4330             return mLauncherCallbacks.isLauncherPreinstalled();
4331         }
4332         PackageManager pm = getPackageManager();
4333         try {
4334             ApplicationInfo ai = pm.getApplicationInfo(getComponentName().getPackageName(), 0);
4335             if ((ai.flags & ApplicationInfo.FLAG_SYSTEM) != 0) {
4336                 return true;
4337             } else {
4338                 return false;
4339             }
4340         } catch (NameNotFoundException e) {
4341             e.printStackTrace();
4342             return false;
4343         }
4344     }
4345
4346     /**
4347      * This method indicates whether or not we should suggest default wallpaper dimensions
4348      * when our wallpaper cropper was not yet used to set a wallpaper.
4349      */
4350     protected boolean overrideWallpaperDimensions() {
4351         if (mLauncherCallbacks != null) {
4352             return mLauncherCallbacks.overrideWallpaperDimensions();
4353         }
4354         return true;
4355     }
4356
4357     /**
4358      * To be overridden by subclasses to indicate that there is an activity to launch
4359      * before showing the standard launcher experience.
4360      */
4361     protected boolean hasFirstRunActivity() {
4362         if (mLauncherCallbacks != null) {
4363             return mLauncherCallbacks.hasFirstRunActivity();
4364         }
4365         return false;
4366     }
4367
4368     /**
4369      * To be overridden by subclasses to launch any first run activity
4370      */
4371     protected Intent getFirstRunActivity() {
4372         if (mLauncherCallbacks != null) {
4373             return mLauncherCallbacks.getFirstRunActivity();
4374         }
4375         return null;
4376     }
4377
4378     private boolean shouldRunFirstRunActivity() {
4379         return !ActivityManager.isRunningInTestHarness() &&
4380                 !mSharedPrefs.getBoolean(FIRST_RUN_ACTIVITY_DISPLAYED, false);
4381     }
4382
4383     protected boolean hasRunFirstRunActivity() {
4384         return mSharedPrefs.getBoolean(FIRST_RUN_ACTIVITY_DISPLAYED, false);
4385     }
4386
4387     public boolean showFirstRunActivity() {
4388         if (shouldRunFirstRunActivity() &&
4389                 hasFirstRunActivity()) {
4390             Intent firstRunIntent = getFirstRunActivity();
4391             if (firstRunIntent != null) {
4392                 startActivity(firstRunIntent);
4393                 markFirstRunActivityShown();
4394                 return true;
4395             }
4396         }
4397         return false;
4398     }
4399
4400     private void markFirstRunActivityShown() {
4401         SharedPreferences.Editor editor = mSharedPrefs.edit();
4402         editor.putBoolean(FIRST_RUN_ACTIVITY_DISPLAYED, true);
4403         editor.apply();
4404     }
4405
4406     /**
4407      * To be overridden by subclasses to indicate that there is an in-activity full-screen intro
4408      * screen that must be displayed and dismissed.
4409      */
4410     protected boolean hasDismissableIntroScreen() {
4411         if (mLauncherCallbacks != null) {
4412             return mLauncherCallbacks.hasDismissableIntroScreen();
4413         }
4414         return false;
4415     }
4416
4417     /**
4418      * Full screen intro screen to be shown and dismissed before the launcher can be used.
4419      */
4420     protected View getIntroScreen() {
4421         if (mLauncherCallbacks != null) {
4422             return mLauncherCallbacks.getIntroScreen();
4423         }
4424         return null;
4425     }
4426
4427     /**
4428      * To be overriden by subclasses to indicate whether the in-activity intro screen has been
4429      * dismissed. This method is ignored if #hasDismissableIntroScreen returns false.
4430      */
4431     private boolean shouldShowIntroScreen() {
4432         return hasDismissableIntroScreen() &&
4433                 !mSharedPrefs.getBoolean(INTRO_SCREEN_DISMISSED, false);
4434     }
4435
4436     protected void showIntroScreen() {
4437         View introScreen = getIntroScreen();
4438         changeWallpaperVisiblity(false);
4439         if (introScreen != null) {
4440             mDragLayer.showOverlayView(introScreen);
4441         }
4442         if (mLauncherOverlayContainer != null) {
4443             mLauncherOverlayContainer.setVisibility(View.INVISIBLE);
4444         }
4445     }
4446
4447     public void dismissIntroScreen() {
4448         markIntroScreenDismissed();
4449         if (showFirstRunActivity()) {
4450             // We delay hiding the intro view until the first run activity is showing. This
4451             // avoids a blip.
4452             mWorkspace.postDelayed(new Runnable() {
4453                 @Override
4454                 public void run() {
4455                     mDragLayer.dismissOverlayView();
4456                     if (mLauncherOverlayContainer != null) {
4457                         mLauncherOverlayContainer.setVisibility(View.VISIBLE);
4458                     }
4459                     showFirstRunClings();
4460                 }
4461             }, ACTIVITY_START_DELAY);
4462         } else {
4463             mDragLayer.dismissOverlayView();
4464             if (mLauncherOverlayContainer != null) {
4465                 mLauncherOverlayContainer.setVisibility(View.VISIBLE);
4466             }
4467             showFirstRunClings();
4468         }
4469         changeWallpaperVisiblity(true);
4470     }
4471
4472     private void markIntroScreenDismissed() {
4473         SharedPreferences.Editor editor = mSharedPrefs.edit();
4474         editor.putBoolean(INTRO_SCREEN_DISMISSED, true);
4475         editor.apply();
4476     }
4477
4478     @Thunk void showFirstRunClings() {
4479         // The two first run cling paths are mutually exclusive, if the launcher is preinstalled
4480         // on the device, then we always show the first run cling experience (or if there is no
4481         // launcher2). Otherwise, we prompt the user upon started for migration
4482         LauncherClings launcherClings = new LauncherClings(this);
4483         if (launcherClings.shouldShowFirstRunOrMigrationClings()) {
4484             if (mModel.canMigrateFromOldLauncherDb(this)) {
4485                 launcherClings.showMigrationCling();
4486             } else {
4487                 launcherClings.showLongPressCling(true);
4488             }
4489         }
4490     }
4491
4492     void showWorkspaceSearchAndHotseat() {
4493         if (mWorkspace != null) mWorkspace.setAlpha(1f);
4494         if (mHotseat != null) mHotseat.setAlpha(1f);
4495         if (mPageIndicators != null) mPageIndicators.setAlpha(1f);
4496         if (mSearchDropTargetBar != null) mSearchDropTargetBar.showSearchBar(false);
4497     }
4498
4499     void hideWorkspaceSearchAndHotseat() {
4500         if (mWorkspace != null) mWorkspace.setAlpha(0f);
4501         if (mHotseat != null) mHotseat.setAlpha(0f);
4502         if (mPageIndicators != null) mPageIndicators.setAlpha(0f);
4503         if (mSearchDropTargetBar != null) mSearchDropTargetBar.hideSearchBar(false);
4504     }
4505
4506     // TODO: These method should be a part of LauncherSearchCallback
4507     @TargetApi(Build.VERSION_CODES.LOLLIPOP)
4508     public ItemInfo createAppDragInfo(Intent appLaunchIntent) {
4509         // Called from search suggestion
4510         UserHandleCompat user = null;
4511         if (Utilities.isLmpOrAbove()) {
4512             UserHandle userHandle = appLaunchIntent.getParcelableExtra(Intent.EXTRA_USER);
4513             if (userHandle != null) {
4514                 user = UserHandleCompat.fromUser(userHandle);
4515             }
4516         }
4517         return createAppDragInfo(appLaunchIntent, user);
4518     }
4519
4520     // TODO: This method should be a part of LauncherSearchCallback
4521     public ItemInfo createAppDragInfo(Intent intent, UserHandleCompat user) {
4522         if (user == null) {
4523             user = UserHandleCompat.myUserHandle();
4524         }
4525
4526         // Called from search suggestion, add the profile extra to the intent to ensure that we
4527         // can launch it correctly
4528         LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(this);
4529         LauncherActivityInfoCompat activityInfo = launcherApps.resolveActivity(intent, user);
4530         if (activityInfo == null) {
4531             return null;
4532         }
4533         return new AppInfo(this, activityInfo, user, mIconCache);
4534     }
4535
4536     // TODO: This method should be a part of LauncherSearchCallback
4537     public ItemInfo createShortcutDragInfo(Intent shortcutIntent, CharSequence caption,
4538             Bitmap icon) {
4539         return new ShortcutInfo(shortcutIntent, caption, caption, icon,
4540                 UserHandleCompat.myUserHandle());
4541     }
4542
4543     // TODO: This method should be a part of LauncherSearchCallback
4544     public void startDrag(View dragView, ItemInfo dragInfo, DragSource source) {
4545         dragView.setTag(dragInfo);
4546         mWorkspace.onExternalDragStartedWithItem(dragView);
4547         mWorkspace.beginExternalDragShared(dragView, source);
4548     }
4549
4550     protected void moveWorkspaceToDefaultScreen() {
4551         mWorkspace.moveToDefaultScreen(false);
4552     }
4553
4554     @Override
4555     public void onPageSwitch(View newPage, int newPageIndex) {
4556         if (mLauncherCallbacks != null) {
4557             mLauncherCallbacks.onPageSwitch(newPage, newPageIndex);
4558         }
4559     }
4560
4561     /**
4562      * Returns a FastBitmapDrawable with the icon, accurately sized.
4563      */
4564     public FastBitmapDrawable createIconDrawable(Bitmap icon) {
4565         FastBitmapDrawable d = new FastBitmapDrawable(icon);
4566         d.setFilterBitmap(true);
4567         resizeIconDrawable(d);
4568         return d;
4569     }
4570
4571     /**
4572      * Resizes an icon drawable to the correct icon size.
4573      */
4574     public void resizeIconDrawable(Drawable icon) {
4575         icon.setBounds(0, 0, mDeviceProfile.iconSizePx, mDeviceProfile.iconSizePx);
4576     }
4577
4578     /**
4579      * Prints out out state for debugging.
4580      */
4581     public void dumpState() {
4582         Log.d(TAG, "BEGIN launcher3 dump state for launcher " + this);
4583         Log.d(TAG, "mSavedState=" + mSavedState);
4584         Log.d(TAG, "mWorkspaceLoading=" + mWorkspaceLoading);
4585         Log.d(TAG, "mRestoring=" + mRestoring);
4586         Log.d(TAG, "mWaitingForResult=" + mWaitingForResult);
4587         Log.d(TAG, "mSavedInstanceState=" + mSavedInstanceState);
4588         Log.d(TAG, "sFolders.size=" + sFolders.size());
4589         mModel.dumpState();
4590         // TODO(hyunyoungs): add mWidgetsView.dumpState(); or mWidgetsModel.dumpState();
4591
4592         Log.d(TAG, "END launcher3 dump state");
4593     }
4594
4595     @Override
4596     public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) {
4597         super.dump(prefix, fd, writer, args);
4598         synchronized (sDumpLogs) {
4599             writer.println(" ");
4600             writer.println("Debug logs: ");
4601             for (int i = 0; i < sDumpLogs.size(); i++) {
4602                 writer.println("  " + sDumpLogs.get(i));
4603             }
4604         }
4605         if (mLauncherCallbacks != null) {
4606             mLauncherCallbacks.dump(prefix, fd, writer, args);
4607         }
4608     }
4609
4610     public static void dumpDebugLogsToConsole() {
4611         if (DEBUG_DUMP_LOG) {
4612             synchronized (sDumpLogs) {
4613                 Log.d(TAG, "");
4614                 Log.d(TAG, "*********************");
4615                 Log.d(TAG, "Launcher debug logs: ");
4616                 for (int i = 0; i < sDumpLogs.size(); i++) {
4617                     Log.d(TAG, "  " + sDumpLogs.get(i));
4618                 }
4619                 Log.d(TAG, "*********************");
4620                 Log.d(TAG, "");
4621             }
4622         }
4623     }
4624
4625     public static void addDumpLog(String tag, String log, boolean debugLog) {
4626         addDumpLog(tag, log, null, debugLog);
4627     }
4628
4629     public static void addDumpLog(String tag, String log, Exception e, boolean debugLog) {
4630         if (debugLog) {
4631             if (e != null) {
4632                 Log.d(tag, log, e);
4633             } else {
4634                 Log.d(tag, log);
4635             }
4636         }
4637         if (DEBUG_DUMP_LOG) {
4638             sDateStamp.setTime(System.currentTimeMillis());
4639             synchronized (sDumpLogs) {
4640                 sDumpLogs.add(sDateFormat.format(sDateStamp) + ": " + tag + ", " + log
4641                     + (e == null ? "" : (", Exception: " + e)));
4642             }
4643         }
4644     }
4645
4646     public static CustomAppWidget getCustomAppWidget(String name) {
4647         return sCustomAppWidgets.get(name);
4648     }
4649
4650     public static HashMap<String, CustomAppWidget> getCustomAppWidgets() {
4651         return sCustomAppWidgets;
4652     }
4653
4654     public void dumpLogsToLocalData() {
4655         if (DEBUG_DUMP_LOG) {
4656             new AsyncTask<Void, Void, Void>() {
4657                 public Void doInBackground(Void ... args) {
4658                     boolean success = false;
4659                     sDateStamp.setTime(sRunStart);
4660                     String FILENAME = sDateStamp.getMonth() + "-"
4661                             + sDateStamp.getDay() + "_"
4662                             + sDateStamp.getHours() + "-"
4663                             + sDateStamp.getMinutes() + "_"
4664                             + sDateStamp.getSeconds() + ".txt";
4665
4666                     FileOutputStream fos = null;
4667                     File outFile = null;
4668                     try {
4669                         outFile = new File(getFilesDir(), FILENAME);
4670                         outFile.createNewFile();
4671                         fos = new FileOutputStream(outFile);
4672                     } catch (Exception e) {
4673                         e.printStackTrace();
4674                     }
4675                     if (fos != null) {
4676                         PrintWriter writer = new PrintWriter(fos);
4677
4678                         writer.println(" ");
4679                         writer.println("Debug logs: ");
4680                         synchronized (sDumpLogs) {
4681                             for (int i = 0; i < sDumpLogs.size(); i++) {
4682                                 writer.println("  " + sDumpLogs.get(i));
4683                             }
4684                         }
4685                         writer.close();
4686                     }
4687                     try {
4688                         if (fos != null) {
4689                             fos.close();
4690                             success = true;
4691                         }
4692                     } catch (IOException e) {
4693                         e.printStackTrace();
4694                     }
4695                     return null;
4696                 }
4697             }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void) null);
4698         }
4699     }
4700 }
4701
4702 interface DebugIntents {
4703     static final String DELETE_DATABASE = "com.android.launcher3.action.DELETE_DATABASE";
4704     static final String MIGRATE_DATABASE = "com.android.launcher3.action.MIGRATE_DATABASE";
4705 }