/src/com/cyanogenmod/trebuchet/Launcher.java

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/*
 * Copyright (C) 2008 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.cyanogenmod.trebuchet;

import android.accounts.Account;
import android.accounts.AccountManager;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.animation.PropertyValuesHolder;
import android.animation.ValueAnimator;
import android.animation.ValueAnimator.AnimatorUpdateListener;
import android.app.Activity;
import android.app.ActivityManager;
import android.app.ActivityOptions;
import android.app.AlertDialog;
import android.app.SearchManager;
import android.app.StatusBarManager;
import android.appwidget.AppWidgetHostView;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProviderInfo;
import android.content.ActivityNotFoundException;
import android.content.BroadcastReceiver;
import android.content.ComponentCallbacks2;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.pm.ResolveInfo;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.database.ContentObserver;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.PorterDuff;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.os.StrictMode;
import android.os.SystemClock;
import android.provider.Settings;
import android.speech.RecognizerIntent;
import android.text.Selection;
import android.text.SpannableStringBuilder;
import android.text.TextUtils;
import android.text.method.TextKeyListener;
import android.util.Log;
import android.view.Display;
import android.view.HapticFeedbackConstants;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.Surface;
import android.view.View;
import android.view.View.OnLongClickListener;
import android.view.ViewConfiguration;
import android.view.ViewGroup;
import android.view.ViewTreeObserver;
import android.view.ViewGroup.MarginLayoutParams;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;
import android.view.WindowManager;
import android.view.accessibility.AccessibilityEvent;
import android.view.animation.AccelerateDecelerateInterpolator;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.DecelerateInterpolator;
import android.view.inputmethod.InputMethodManager;
import android.widget.Advanceable;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.PopupMenu;
import android.widget.TextView;
import android.widget.Toast;

import com.android.common.Search;
import com.cyanogenmod.trebuchet.DropTarget.DragObject;
import com.cyanogenmod.trebuchet.preference.*;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileDescriptor;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

/**
 * Default launcher application.
 */
public final class Launcher extends Activity
        implements View.OnClickListener, OnLongClickListener, LauncherModel.Callbacks,
                   View.OnTouchListener {
    private static final String TAG = "Trebuchet.Launcher";

    static final boolean PROFILE_STARTUP = false;
    static final boolean DEBUG_WIDGETS = false;
    static final boolean DEBUG_STRICT_MODE = false;

    private static final int MENU_GROUP_WALLPAPER = 1;
    private static final int MENU_GROUP_DRAWER = MENU_GROUP_WALLPAPER + 1;
    private static final int MENU_DRAWER = Menu.FIRST + 1;
    private static final int MENU_MANAGE_APPS = MENU_DRAWER + 1;
    private static final int MENU_SYSTEM_SETTINGS = MENU_MANAGE_APPS + 1;
    private static final int MENU_PREFERENCES = MENU_SYSTEM_SETTINGS + 1;
    private static final int MENU_WALLPAPER_SETTINGS = MENU_PREFERENCES + 1;
    private static final int MENU_LOCK_WORKSPACE = MENU_WALLPAPER_SETTINGS + 1;
    private static final int MENU_HELP = MENU_WALLPAPER_SETTINGS + 1;

    private static final int REQUEST_CREATE_SHORTCUT = 1;
    private static final int REQUEST_CREATE_APPWIDGET = 5;
    private static final int REQUEST_PICK_APPLICATION = 6;
    private static final int REQUEST_PICK_SHORTCUT = 7;
    private static final int REQUEST_PICK_APPWIDGET = 9;
    private static final int REQUEST_PICK_WALLPAPER = 10;

    private static final int REQUEST_BIND_APPWIDGET = 11;

    static final String EXTRA_SHORTCUT_DUPLICATE = "duplicate";

    static final int MAX_WORKSPACE_SCREEN_COUNT = 7;
    static final int MAX_HOTSEAT_SCREEN_COUNT = 3;
    static final int MAX_SCREEN_COUNT = MAX_WORKSPACE_SCREEN_COUNT + MAX_HOTSEAT_SCREEN_COUNT;
    static final int DEFAULT_SCREEN = 2;

    private static final String PREFERENCES = "launcher.preferences";
    // To turn on these properties, type
    // adb shell setprop log.tag.PROPERTY_NAME [VERBOSE | SUPPRESS]
    static final String FORCE_ENABLE_ROTATION_PROPERTY = "launcher_force_rotate";
    static final String DUMP_STATE_PROPERTY = "launcher_dump_state";

    // The Intent extra that defines whether to ignore the launch animation
    static final String INTENT_EXTRA_IGNORE_LAUNCH_ANIMATION =
            "com.cyanogenmod.trebuchet.intent.extra.shortcut.INGORE_LAUNCH_ANIMATION";

    // Type: int
    private static final String RUNTIME_STATE_CURRENT_SCREEN = "launcher.current_screen";
    // Type: int
    private static final String RUNTIME_STATE_CURRENT_HOTSEAT_SCREEN = "launcher.hotseat.current_screen";
    // Type: int
    private static final String RUNTIME_STATE = "launcher.state";
    // Type: int
    private static final String RUNTIME_STATE_PENDING_ADD_CONTAINER = "launcher.add_container";
    // Type: int
    private static final String RUNTIME_STATE_PENDING_ADD_SCREEN = "launcher.add_screen";
    // Type: int
    private static final String RUNTIME_STATE_PENDING_ADD_CELL_X = "launcher.add_cell_x";
    // Type: int
    private static final String RUNTIME_STATE_PENDING_ADD_CELL_Y = "launcher.add_cell_y";
    // Type: boolean
    private static final String RUNTIME_STATE_PENDING_FOLDER_RENAME = "launcher.rename_folder";
    // Type: long
    private static final String RUNTIME_STATE_PENDING_FOLDER_RENAME_ID = "launcher.rename_folder_id";
    // Type: int
    private static final String RUNTIME_STATE_PENDING_ADD_SPAN_X = "launcher.add_span_x";
    // Type: int
    private static final String RUNTIME_STATE_PENDING_ADD_SPAN_Y = "launcher.add_span_y";
    // Type: parcelable
    private static final String RUNTIME_STATE_PENDING_ADD_WIDGET_INFO = "launcher.add_widget_info";

    private static final String TOOLBAR_ICON_METADATA_NAME = "com.android.launcher.toolbar_icon";
    private static final String TOOLBAR_SEARCH_ICON_METADATA_NAME =
            "com.android.launcher.toolbar_search_icon";
    private static final String TOOLBAR_VOICE_SEARCH_ICON_METADATA_NAME =
            "com.android.launcher.toolbar_voice_search_icon";

    /** The different states that Launcher can be in. */
    private enum State { NONE, WORKSPACE, APPS_CUSTOMIZE, APPS_CUSTOMIZE_SPRING_LOADED }
    private State mState = State.WORKSPACE;
    private AnimatorSet mStateAnimation;
    private AnimatorSet mDividerAnimator;

    static final int APPWIDGET_HOST_ID = 1024;
    private static final int EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT = 300;
    private static final int EXIT_SPRINGLOADED_MODE_LONG_TIMEOUT = 600;
    private static final int SHOW_CLING_DURATION = 550;
    private static final int DISMISS_CLING_DURATION = 250;

    // How long to wait before the new-shortcut animation automatically pans the workspace
    private static final int NEW_APPS_ANIMATION_INACTIVE_TIMEOUT_SECONDS = 10;

    private final BroadcastReceiver mCloseSystemDialogsReceiver
            = new CloseSystemDialogsIntentReceiver();
    private final ContentObserver mWidgetObserver = new AppWidgetResetObserver();

    private LayoutInflater mInflater;

    private Workspace mWorkspace;
    private View mQsbDivider;
    private View mDockDivider;
    private View mLauncherView;
    private DragLayer mDragLayer;
    private DragController mDragController;

    private AppWidgetManager mAppWidgetManager;
    private LauncherAppWidgetHost mAppWidgetHost;

    private ItemInfo mPendingAddInfo = new ItemInfo();
    private AppWidgetProviderInfo mPendingAddWidgetInfo;

    private int[] mTmpAddItemCellCoordinates = new int[2];

    private FolderInfo mFolderInfo;

    private Hotseat mHotseat;

    private SearchDropTargetBar mSearchDropTargetBar;
    private AppsCustomizeTabHost mAppsCustomizeTabHost;
    private AppsCustomizePagedView mAppsCustomizeContent;
    private boolean mAutoAdvanceRunning = false;

    private Bundle mSavedState;
    // We set the state in both onCreate and then onNewIntent in some cases, which causes both
    // scroll issues (because the workspace may not have been measured yet) and extra work.
    // Instead, just save the state that we need to restore Launcher to, and commit it in onResume.
    private State mOnResumeState = State.NONE;

    private SpannableStringBuilder mDefaultKeySsb = null;

    private boolean mWorkspaceLoading = true;

    private boolean mPaused = true;
    private boolean mRestoring;
    private boolean mWaitingForResult;
    private boolean mOnResumeNeedsLoad;

    // Keep track of whether the user has left launcher
    private static boolean sPausedFromUserAction = false;

    private LauncherModel mModel;
    private IconCache mIconCache;
    private boolean mUserPresent = true;
    private boolean mVisible = false;
    private boolean mAttached = false;

    private static LocaleConfiguration sLocaleConfiguration = null;

    private static HashMap<Long, FolderInfo> sFolders = new HashMap<Long, FolderInfo>();

    private Intent mAppMarketIntent = null;

    // Related to the auto-advancing of widgets
    private final int ADVANCE_MSG = 1;
    private final int mAdvanceInterval = 20000;
    private final int mAdvanceStagger = 250;
    private long mAutoAdvanceSentTime;
    private long mAutoAdvanceTimeLeft = -1;
    private HashMap<View, AppWidgetProviderInfo> mWidgetsToAdvance =
        new HashMap<View, AppWidgetProviderInfo>();

    // Determines how long to wait after a rotation before restoring the screen orientation to
    // match the sensor state.
    private static final int RESTORE_SCREEN_ORIENTATION_DELAY = 500;

    // External icons saved in case of resource changes, orientation, etc.
    private static Drawable.ConstantState[] sGlobalSearchIcon = new Drawable.ConstantState[2];
    private static Drawable.ConstantState[] sVoiceSearchIcon = new Drawable.ConstantState[2];
    private static Drawable.ConstantState[] sAppMarketIcon = new Drawable.ConstantState[2];

    private Drawable mWorkspaceBackgroundDrawable;
    private Drawable mBlackBackgroundDrawable;

    private final ArrayList<Integer> mSynchronouslyBoundPages = new ArrayList<Integer>();

    static final ArrayList<String> sDumpLogs = new ArrayList<String>();

    // We only want to get the SharedPreferences once since it does an FS stat each time we get
    // it from the context.
    private SharedPreferences mSharedPrefs;

    // Holds the page that we need to animate to, and the icon views that we need to animate up
    // when we scroll to that page on resume.
    private int mNewShortcutAnimatePage = -1;
    private ArrayList<View> mNewShortcutAnimateViews = new ArrayList<View>();
    private ImageView mFolderIconImageView;
    private Bitmap mFolderIconBitmap;
    private Canvas mFolderIconCanvas;
    private Rect mRectForFolderAnimation = new Rect();

    private BubbleTextView mWaitingForResume;

    private HideFromAccessibilityHelper mHideFromAccessibilityHelper
        = new HideFromAccessibilityHelper();
    // Preferences
    private boolean mShowSearchBar;
    private boolean mShowHotseat;
    private boolean mShowDockDivider;
    private boolean mHideIconLabels;
    private boolean mHideDockIconLabels;
    private boolean mAutoRotate;
    private boolean mLockWorkspace;
    private boolean mFullscreenMode;
    private int mHomescreenDoubleTap;
    private int mHomescreenSwipeUp;
    private int mHomescreenSwipeDown;

    private StatusBarManager mStatusBarManager;

    private boolean mWallpaperVisible;

    private Runnable mBuildLayersRunnable = new Runnable() {
        public void run() {
            if (mWorkspace != null) {
                mWorkspace.buildPageHardwareLayers();
            }
        }
    };

    private static ArrayList<PendingAddArguments> sPendingAddList
            = new ArrayList<PendingAddArguments>();

    private static boolean sForceEnableRotation = isPropertyEnabled(FORCE_ENABLE_ROTATION_PROPERTY);

    private static class PendingAddArguments {
        int requestCode;
        Intent intent;
        long container;
        int screen;
        int cellX;
        int cellY;
    }

    private static boolean isPropertyEnabled(String propertyName) {
        return Log.isLoggable(propertyName, Log.VERBOSE);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        if (DEBUG_STRICT_MODE) {
            StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
                    .detectDiskReads()
                    .detectDiskWrites()
                    .detectNetwork()   // or .detectAll() for all detectable problems
                    .penaltyLog()
                    .build());
            StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()
                    .detectLeakedSqlLiteObjects()
                    .detectLeakedClosableObjects()
                    .penaltyLog()
                    .penaltyDeath()
                    .build());
        }

        super.onCreate(savedInstanceState);
        LauncherApplication app = ((LauncherApplication)getApplication());
        mSharedPrefs = getSharedPreferences(LauncherApplication.getSharedPreferencesKey(),
                Context.MODE_PRIVATE);
        mModel = app.setLauncher(this);
        mIconCache = app.getIconCache();
        mDragController = new DragController(this);
        mInflater = getLayoutInflater();
        final Resources res = getResources();

        // Load all preferences
        PreferencesProvider.load(this);

        mAppWidgetManager = AppWidgetManager.getInstance(this);
        mAppWidgetHost = new LauncherAppWidgetHost(this, APPWIDGET_HOST_ID);
        mAppWidgetHost.startListening();

        // If we are getting an onCreate, we can actually preempt onResume and unset mPaused here,
        // this also ensures that any synchronous binding below doesn't re-trigger another
        // LauncherModel load.
        mPaused = false;
        // Preferences
        mShowSearchBar = PreferencesProvider.Interface.Homescreen.getShowSearchBar();
        mShowHotseat = PreferencesProvider.Interface.Dock.getShowDock();
        mShowDockDivider = PreferencesProvider.Interface.Dock.getShowDivider() && mShowHotseat;
        mHideIconLabels = PreferencesProvider.Interface.Homescreen.getHideIconLabels();
        mHideDockIconLabels = PreferencesProvider.Interface.Dock.getHideIconLabels();
        boolean verticalHotseat =
                res.getBoolean(R.bool.hotseat_transpose_layout_with_orientation) &&
                res.getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE;
        mHideDockIconLabels = PreferencesProvider.Interface.Dock.getHideIconLabels() ||
                (!mShowHotseat || (verticalHotseat && !LauncherApplication.isScreenLarge()));
        mAutoRotate = PreferencesProvider.Interface.General.getAutoRotate(getResources().getBoolean(R.bool.allow_rotation));
        mLockWorkspace = PreferencesProvider.Interface.General.getLockWorkspace(getResources().getBoolean(R.bool.lock_workspace));
        mFullscreenMode = PreferencesProvider.Interface.General.getFullscreenMode();
        mHomescreenDoubleTap = PreferencesProvider.Interface.Gestures.getHomescreenDoubleTap();
        mHomescreenSwipeUp = PreferencesProvider.Interface.Gestures.getHomescreenSwipeUp();
        mHomescreenSwipeDown = PreferencesProvider.Interface.Gestures.getHomescreenSwipeDown();

        if (PROFILE_STARTUP) {
            android.os.Debug.startMethodTracing(
                    Environment.getExternalStorageDirectory() + "/launcher");
        }

        checkForLocaleChange();
        setContentView(R.layout.launcher);
        setupViews();
        showFirstRunWorkspaceCling();

        registerContentObservers();

        lockAllApps();

        mSavedState = savedInstanceState;
        restoreState(mSavedState);

        // Update customization drawer _after_ restoring the states
        if (mAppsCustomizeContent != null) {
            mAppsCustomizeContent.onPackagesUpdated();
        }

        if (PROFILE_STARTUP) {
            android.os.Debug.stopMethodTracing();
        }

        if (!mRestoring) {
            if (sPausedFromUserAction) {
                // If the user leaves launcher, then we should just load items asynchronously when
                // they return.
                mModel.startLoader(true, -1);
            } else {
                // We only load the page synchronously if the user rotates (or triggers a
                // configuration change) while launcher is in the foreground
                mModel.startLoader(true, mWorkspace.getCurrentPage());
            }
        }

        if (!mModel.isAllAppsLoaded()) {
            ViewGroup appsCustomizeContentParent = (ViewGroup) mAppsCustomizeContent.getParent();
            mInflater.inflate(R.layout.apps_customize_progressbar, appsCustomizeContentParent);
        }

        // For handling default keys
        mDefaultKeySsb = new SpannableStringBuilder();
        Selection.setSelection(mDefaultKeySsb, 0);

        IntentFilter filter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
        registerReceiver(mCloseSystemDialogsReceiver, filter);

        updateGlobalIcons();

        // On large interfaces, we want the screen to auto-rotate based on the current orientation
        unlockScreenOrientation(true);

        mStatusBarManager = (StatusBarManager) getSystemService(Context.STATUS_BAR_SERVICE);
    }

    protected void onUserLeaveHint() {
        super.onUserLeaveHint();
        sPausedFromUserAction = true;
    }

    private void updateGlobalIcons() {
        boolean searchVisible = false;
        boolean voiceVisible = false;
        // If we have a saved version of these external icons, we load them up immediately
        int coi = getCurrentOrientationIndexForGlobalIcons();
        if (sGlobalSearchIcon[coi] == null || sVoiceSearchIcon[coi] == null ||
                sAppMarketIcon[coi] == null) {
            updateAppMarketIcon();
            searchVisible = updateGlobalSearchIcon();
            voiceVisible = updateVoiceSearchIcon(searchVisible);
        }
        if (sGlobalSearchIcon[coi] != null) {
             updateGlobalSearchIcon(sGlobalSearchIcon[coi]);
             searchVisible = true;
        }
        if (sVoiceSearchIcon[coi] != null) {
            updateVoiceSearchIcon(sVoiceSearchIcon[coi]);
            voiceVisible = true;
        }
        if (sAppMarketIcon[coi] != null) {
            updateAppMarketIcon(sAppMarketIcon[coi]);
        }
        if (mSearchDropTargetBar != null) {
            mSearchDropTargetBar.onSearchPackagesChanged(searchVisible, voiceVisible);
        }
    }

    private void checkForLocaleChange() {
        if (sLocaleConfiguration == null) {
            new AsyncTask<Void, Void, LocaleConfiguration>() {
                @Override
                protected LocaleConfiguration doInBackground(Void... unused) {
                    LocaleConfiguration localeConfiguration = new LocaleConfiguration();
                    readConfiguration(Launcher.this, localeConfiguration);
                    return localeConfiguration;
                }

                @Override
                protected void onPostExecute(LocaleConfiguration result) {
                    sLocaleConfiguration = result;
                    checkForLocaleChange();  // recursive, but now with a locale configuration
                }
            }.execute();
            return;
        }

        final Configuration configuration = getResources().getConfiguration();

        final String previousLocale = sLocaleConfiguration.locale;
        final String locale = configuration.locale.toString();

        final int previousMcc = sLocaleConfiguration.mcc;
        final int mcc = configuration.mcc;

        final int previousMnc = sLocaleConfiguration.mnc;
        final int mnc = configuration.mnc;

        boolean localeChanged = !locale.equals(previousLocale) || mcc != previousMcc || mnc != previousMnc;

        if (localeChanged) {
            sLocaleConfiguration.locale = locale;
            sLocaleConfiguration.mcc = mcc;
            sLocaleConfiguration.mnc = mnc;

            mIconCache.flush();

            final LocaleConfiguration localeConfiguration = sLocaleConfiguration;
            new Thread("WriteLocaleConfiguration") {
                @Override
                public void run() {
                    writeConfiguration(Launcher.this, localeConfiguration);
                }
            }.start();
        }
    }

    private static class LocaleConfiguration {
        public String locale;
        public int mcc = -1;
        public int mnc = -1;
    }

    private static void readConfiguration(Context context, LocaleConfiguration configuration) {
        DataInputStream in = null;
        try {
            in = new DataInputStream(context.openFileInput(PREFERENCES));
            configuration.locale = in.readUTF();
            configuration.mcc = in.readInt();
            configuration.mnc = in.readInt();
        } catch (FileNotFoundException e) {
            // Ignore
        } catch (IOException e) {
            // Ignore
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (IOException e) {
                    // Ignore
                }
            }
        }
    }

    private static void writeConfiguration(Context context, LocaleConfiguration configuration) {
        DataOutputStream out = null;
        try {
            out = new DataOutputStream(context.openFileOutput(PREFERENCES, MODE_PRIVATE));
            out.writeUTF(configuration.locale);
            out.writeInt(configuration.mcc);
            out.writeInt(configuration.mnc);
            out.flush();
        } catch (FileNotFoundException e) {
            // Ignore
        } catch (IOException e) {
            //noinspection ResultOfMethodCallIgnored
            context.getFileStreamPath(PREFERENCES).delete();
        } finally {
            if (out != null) {
                try {
                    out.close();
                } catch (IOException e) {
                    // Ignore
                }
            }
        }
    }

    public DragLayer getDragLayer() {
        return mDragLayer;
    }

    boolean isDraggingEnabled() {
        // We prevent dragging when we are loading the workspace as it is possible to pick up a view
        // that is subsequently removed from the workspace in startBinding().
        return !mModel.isLoadingWorkspace();
    }

    /**
     * Returns whether we should delay spring loaded mode -- for shortcuts and widgets that have
     * a configuration step, this allows the proper animations to run after other transitions.
     */
    private boolean completeAdd(PendingAddArguments args) {
        boolean result = false;
        switch (args.requestCode) {
            case REQUEST_PICK_APPLICATION:
                completeAddApplication(args.intent, args.container, args.screen, args.cellX,
                        args.cellY);
                break;
            case REQUEST_PICK_SHORTCUT:
                processShortcut(args.intent);
                // Don't remove pending add info
                return false;
            case REQUEST_CREATE_SHORTCUT:
                completeAddShortcut(args.intent, args.container, args.screen, args.cellX,
                        args.cellY);
                result = true;
                break;
            case REQUEST_CREATE_APPWIDGET:
                int appWidgetId = args.intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1);
                completeAddAppWidget(appWidgetId, args.container, args.screen, null, null);
                result = true;
                break;
            case REQUEST_PICK_WALLPAPER:
                // We just wanted the activity result here so we can clear mWaitingForResult
                break;
        }
        // Before adding this resetAddInfo(), after a shortcut was added to a workspace screen,
        // if you turned the screen off and then back while in All Apps, Launcher would not
        // return to the workspace. Clearing mAddInfo.container here fixes this issue
        resetAddInfo();
        return result;
    }

    @Override
    protected void onActivityResult(
            final int requestCode, final int resultCode, final Intent data) {
        if (requestCode == REQUEST_BIND_APPWIDGET) {
            int appWidgetId = data != null ?
                    data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1) : -1;
            if (resultCode == RESULT_CANCELED) {
                completeTwoStageWidgetDrop(RESULT_CANCELED, appWidgetId);
            } else if (resultCode == RESULT_OK) {
                addAppWidgetImpl(appWidgetId, mPendingAddInfo, null, mPendingAddWidgetInfo);
            }
            return;
        }
        boolean delayExitSpringLoadedMode = false;
        boolean isWidgetDrop = (requestCode == REQUEST_PICK_APPWIDGET ||
                requestCode == REQUEST_CREATE_APPWIDGET);
        mWaitingForResult = false;

        // We have special handling for widgets
        if (isWidgetDrop) {
            int appWidgetId = data != null ?
                    data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1) : -1;
            if (appWidgetId < 0) {
                Log.e(TAG, "Error: appWidgetId (EXTRA_APPWIDGET_ID) was not returned from the \\" +
                        "widget configuration activity.");
                completeTwoStageWidgetDrop(RESULT_CANCELED, appWidgetId);
            } else {
                completeTwoStageWidgetDrop(resultCode, appWidgetId);
            }
            return;
        }

        // The pattern used here is that a user PICKs a specific application,
        // which, depending on the target, might need to CREATE the actual target.

        // For example, the user would PICK_SHORTCUT for "Music playlist", and we
        // launch over to the Music app to actually CREATE_SHORTCUT.
        if (resultCode == RESULT_OK && mPendingAddInfo.container != com.cyanogenmod.trebuchet.ItemInfo.NO_ID) {
            final PendingAddArguments args = new PendingAddArguments();
            args.requestCode = requestCode;
            args.intent = data;
            args.container = mPendingAddInfo.container;
            args.screen = mPendingAddInfo.screen;
            args.cellX = mPendingAddInfo.cellX;
            args.cellY = mPendingAddInfo.cellY;
            if (isWorkspaceLocked()) {
                sPendingAddList.add(args);
            } else {
                delayExitSpringLoadedMode = completeAdd(args);
            }
        }
        mDragLayer.clearAnimatedView();
        // Exit spring loaded mode if necessary after cancelling the configuration of a widget
        exitSpringLoadedDragModeDelayed((resultCode != RESULT_CANCELED), delayExitSpringLoadedMode,
                null);
    }

    private void completeTwoStageWidgetDrop(final int resultCode, final int appWidgetId) {
        CellLayout cellLayout =
                (CellLayout) mWorkspace.getChildAt(mPendingAddInfo.screen);
        Runnable onCompleteRunnable = null;
        int animationType = 0;

        AppWidgetHostView boundWidget = null;
        if (resultCode == RESULT_OK) {
            animationType = Workspace.COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION;
            final AppWidgetHostView layout = mAppWidgetHost.createView(this, appWidgetId,
                    mPendingAddWidgetInfo);
            boundWidget = layout;
            onCompleteRunnable = new Runnable() {
                @Override
                public void run() {
                    completeAddAppWidget(appWidgetId, mPendingAddInfo.container,
                            mPendingAddInfo.screen, layout, null);
                    exitSpringLoadedDragModeDelayed(true, false, null);
                }
            };
        } else if (resultCode == RESULT_CANCELED) {
            animationType = Workspace.CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION;
            onCompleteRunnable = new Runnable() {
                @Override
                public void run() {
                    exitSpringLoadedDragModeDelayed(false, false, null);
                }
            };
        }
        if (mDragLayer.getAnimatedView() != null) {
            mWorkspace.animateWidgetDrop(mPendingAddInfo, cellLayout,
                    (DragView) mDragLayer.getAnimatedView(), onCompleteRunnable,
                    animationType, boundWidget, true);
        } else {
            // The animated view may be null in the case of a rotation during widget configuration
            if (onCompleteRunnable != null) {
                onCompleteRunnable.run();
            }
        }
    }

    @Override
    protected void onResume() {
        super.onResume();

        // Restore the previous launcher state
        if (mOnResumeState == State.WORKSPACE) {
            showWorkspace(false);
        } else if (mOnResumeState == State.APPS_CUSTOMIZE) {
            showAllApps(false);
        }
        mOnResumeState = State.NONE;

        // Background was set to gradient in onPause(), restore to black if in all apps.
        setWorkspaceBackground(mState == State.WORKSPACE);

        // Process any items that were added while Launcher was away
        InstallShortcutReceiver.flushInstallQueue(this);

        mPaused = false;
        sPausedFromUserAction = false;
        // Restart launcher when preferences are changed
        if (preferencesChanged()) {
            android.os.Process.killProcess(android.os.Process.myPid());
        }
        if (mRestoring || mOnResumeNeedsLoad) {
            mWorkspaceLoading = true;
            mModel.startLoader(true, -1);
            mRestoring = false;
            mOnResumeNeedsLoad = false;
        }

        // Reset the pressed state of icons that were locked in the press state while activities
        // were launching
        if (mWaitingForResume != null) {
            // Resets the previous workspace icon press state
            mWaitingForResume.setStayPressed(false);
        }
        if (mAppsCustomizeContent != null) {
            // Resets the previous all apps icon press state
            mAppsCustomizeContent.resetDrawableState();
        }
        // It is possible that widgets can receive updates while launcher is not in the foreground.
        // Consequently, the widgets will be inflated in the orientation of the foreground activity
        // (framework issue). On resuming, we ensure that any widgets are inflated for the current
        // orientation.
        getWorkspace().reinflateWidgetsIfNecessary();
        getWorkspace().checkWallpaper();

        // Again, as with the above scenario, it's possible that one or more of the global icons
        // were updated in the wrong orientation.
        updateGlobalIcons();
    }

    @Override
    protected void onPause() {
        // NOTE: We want all transitions from launcher to act as if the wallpaper were enabled
        // to be consistent.  So re-enable the flag here, and we will re-disable it as necessary
        // when Launcher resumes and we are still in AllApps.
        updateWallpaperVisibility(true);

        super.onPause();
        mPaused = true;
        mDragController.cancelDrag();
        mDragController.resetLastGestureUpTime();
    }

    @Override
    public Object onRetainNonConfigurationInstance() {
        // Flag the loader to stop early before switching
        mModel.stopLoader();
        if (mAppsCustomizeContent != null) {
            mAppsCustomizeContent.surrender();
        }
        return Boolean.TRUE;
    }

    private boolean acceptFilter() {
        final InputMethodManager inputManager = (InputMethodManager)
                getSystemService(Context.INPUT_METHOD_SERVICE);
        return !inputManager.isFullscreenMode();
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        final int uniChar = event.getUnicodeChar();
        final boolean handled = super.onKeyDown(keyCode, event);
        final boolean isKeyNotWhitespace = uniChar > 0 && !Character.isWhitespace(uniChar);
        if (!handled && acceptFilter() && isKeyNotWhitespace) {
            boolean gotKey = TextKeyListener.getInstance().onKeyDown(mWorkspace, mDefaultKeySsb,
                    keyCode, event);
            if (gotKey && mDefaultKeySsb != null && mDefaultKeySsb.length() > 0) {
                // something usable has been typed - start a search
                // the typed text will be retrieved and cleared by
                // showSearchDialog()
                // If there are multiple keystrokes before the search dialog takes focus,
                // onSearchRequested() will be called for every keystroke,
                // but it is idempotent, so it's fine.
                return onSearchRequested();
            }
        }

        // Eat the long press event so the keyboard doesn't come up.
        if (keyCode == KeyEvent.KEYCODE_MENU && event.isLongPress()) {
            return true;
        }

        return handled;
    }

    private String getTypedText() {
        return mDefaultKeySsb.toString();
    }

    private void clearTypedText() {
        mDefaultKeySsb.clear();
        mDefaultKeySsb.clearSpans();
        Selection.setSelection(mDefaultKeySsb, 0);
    }

    /**
     * Given the integer (ordinal) value of a State enum instance, convert it to a variable of type
     * State
     */
    private static State intToState(int stateOrdinal) {
        State state = State.WORKSPACE;
        final State[] stateValues = State.values();
        for (State stateValue : stateValues) {
            if (stateValue.ordinal() == stateOrdinal) {
                state = stateValue;
                break;
            }
        }
        return state;
    }

    /**
     * Restores the previous state, if it exists.
     *
     * @param savedState The previous state.
     */
    private void restoreState(Bundle savedState) {
        if (savedState == null) {
            return;
        }

        State state = intToState(savedState.getInt(RUNTIME_STATE, State.WORKSPACE.ordinal()));
        if (state == State.APPS_CUSTOMIZE) {
            mOnResumeState = State.APPS_CUSTOMIZE;
        }

        int currentScreen = savedState.getInt(RUNTIME_STATE_CURRENT_SCREEN, -1);
        if (currentScreen > -1) {
            mWorkspace.setCurrentPage(currentScreen);
        }
        int currentHotseatScreen = savedState.getInt(RUNTIME_STATE_CURRENT_HOTSEAT_SCREEN, -1);
        if (currentHotseatScreen > -1) {
            mHotseat.setCurrentPage(mHotseat.getScreenFromOrder(currentHotseatScreen));
        }

        final long pendingAddContainer = savedState.getLong(RUNTIME_STATE_PENDING_ADD_CONTAINER, -1);
        final int pendingAddScreen = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SCREEN, -1);

        if (pendingAddContainer != com.cyanogenmod.trebuchet.ItemInfo.NO_ID && pendingAddScreen > -1) {
            mPendingAddInfo.container = pendingAddContainer;
            mPendingAddInfo.screen = pendingAddScreen;
            mPendingAddInfo.cellX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_X);
            mPendingAddInfo.cellY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_Y);
            mPendingAddInfo.spanX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_X);
            mPendingAddInfo.spanY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y);
            mPendingAddWidgetInfo = savedState.getParcelable(RUNTIME_STATE_PENDING_ADD_WIDGET_INFO);
            mWaitingForResult = true;
            mRestoring = true;
        }


        boolean renameFolder = savedState.getBoolean(RUNTIME_STATE_PENDING_FOLDER_RENAME, false);
        if (renameFolder) {
            long id = savedState.getLong(RUNTIME_STATE_PENDING_FOLDER_RENAME_ID);
            mFolderInfo = mModel.getFolderById(this, sFolders, id);
            mRestoring = true;
        }


        // Restore the AppsCustomize tab
        if (mAppsCustomizeTabHost != null) {
            String curTab = savedState.getString("apps_customize_currentTab");
            if (curTab != null) {
                mAppsCustomizeTabHost.setContentTypeImmediate(
                        mAppsCustomizeTabHost.getContentTypeForTabTag(curTab));
                mAppsCustomizeContent.loadAssociatedPages(
                        mAppsCustomizeContent.getCurrentPage());
            }

            int currentIndex = savedState.getInt("apps_customize_currentIndex");
            mAppsCustomizeContent.restorePageForIndex(currentIndex);
        }
    }

    /**
     * Finds all the views we need and configure them properly.
     */
    private void setupViews() {
        final DragController dragController = mDragController;

        mLauncherView = findViewById(R.id.launcher);
        mDragLayer = (DragLayer) findViewById(R.id.drag_layer);
        mWorkspace = (Workspace) mDragLayer.findViewById(R.id.workspace);
        mQsbDivider = findViewById(R.id.qsb_divider);
        mDockDivider = findViewById(R.id.dock_divider);

        mLauncherView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
        mWorkspaceBackgroundDrawable = getResources().getDrawable(R.drawable.workspace_bg);
        mBlackBackgroundDrawable = new ColorDrawable(Color.BLACK);

        // Setup the drag layer
        mDragLayer.setup(this, dragController);

        // Setup the hotseat
        mHotseat = (Hotseat) findViewById(R.id.hotseat);

        // Setup the workspace
        mWorkspace.setHapticFeedbackEnabled(false);
        mWorkspace.setOnLongClickListener(this);
        mWorkspace.setup(dragController);
        dragController.addDragListener(mWorkspace);
        if (mHomescreenDoubleTap != 0) {
            mWorkspace.setOnDoubleTapCallback(new Runnable() {
                public void run() {
                    performGesture(mHomescreenDoubleTap, 0);
                }
            });
        }
        if (mHomescreenSwipeUp != 0) {
            mWorkspace.setOnSwipeUpCallback(new Runnable() {
                public void run() {
                    performGesture(mHomescreenSwipeUp, 1);
                }
            });
        }
        if (mHomescreenSwipeDown != 0) {
            mWorkspace.setOnSwipeDownCallback(new Runnable() {
                public void run() {
                    performGesture(mHomescreenSwipeDown, 2);
                }
            });
        }

        // Get the search/delete bar
        mSearchDropTargetBar = (SearchDropTargetBar) mDragLayer.findViewById(R.id.qsb_bar);

        // Hide the search divider if we are hiding search bar
        if (!mShowSearchBar && mQsbDivider != null && getCurrentOrientation() == Configuration.ORIENTATION_LANDSCAPE) {
            mQsbDivider.setVisibility(View.GONE);
        }

        if (!mShowHotseat) {
            mHotseat.setVisibility(View.GONE);
        }

        if (!mShowDockDivider && mDockDivider != null) {
            mDockDivider.setVisibility(View.GONE);
        }

        // Redim the hotseat and statusbar to let some extra size for the item text
        if (mShowHotseat && !mHideDockIconLabels && !mHotseat.hasVerticalHotseat()) {
            Resources res = getResources();
            int bottomMarginWithText = res.getDimensionPixelSize(R.dimen.button_bar_height_with_text);
            // Divider
            if (mDockDivider != null) {
                ((MarginLayoutParams)mDockDivider.getLayoutParams()).bottomMargin = bottomMarginWithText;
            }
            // Divider indicator
            View dockScrollingIndicator = findViewById(R.id.paged_view_indicator_dock);
            if (dockScrollingIndicator != null) {
                ((MarginLayoutParams)dockScrollingIndicator.getLayoutParams()).bottomMargin = bottomMarginWithText;
            }
            // Hotseat
            mHotseat.getLayoutParams().height = res.getDimensionPixelSize(R.dimen.button_bar_height_plus_padding_with_text);

            // Workspace
            mWorkspace.setPadding(
                    mWorkspace.getPaddingLeft(),
                    mWorkspace.getPaddingTop(),
                    mWorkspace.getPaddingRight(),
                    res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_port_with_text));
        }

        // Setup AppsCustomize
        mAppsCustomizeTabHost = (AppsCustomizeTabHost) findViewById(R.id.apps_customize_pane);
        mAppsCustomizeContent = (AppsCustomizePagedView)
                mAppsCustomizeTabHost.findViewById(R.id.apps_customize_pane_content);
        mAppsCustomizeContent.setup(this, dragController);

        // Setup the drag controller (drop targets have to be added in reverse order in priority)
        dragController.setDragScoller(mWorkspace);
        dragController.setScrollView(mDragLayer);
        dragController.setMoveTarget(mWorkspace);
        dragController.addDropTarget(mWorkspace);
        if (mSearchDropTargetBar != null) {
            mSearchDropTargetBar.setup(this, dragController);
        }
    }

    /**
     * Starts shortcut rename dialog.
     *
     * @param info The shortcut to be edited
     */
    void updateShortcut(final ShortcutInfo info) {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        View layout = mInflater.inflate(R.layout.dialog_edit, null);
        ImageView icon = (ImageView) layout.findViewById(R.id.dialog_edit_icon);
        icon.setImageBitmap(info.getIcon(mIconCache));
        final EditText title = (EditText) layout.findViewById(R.id.dialog_edit_text);
        title.setText(info.title);
        builder.setView(layout)
                .setTitle(info.title)
                .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int id) {
                        info.setTitle(title.getText());
                        LauncherModel.updateItemInDatabase(Launcher.this, info);
                    }
                })
                .setNegativeButton(android.R.string.cancel, null);
        builder.show();
    }

    /**
     * Creates a view representing a shortcut.
     *
     * @param info The data structure describing the shortcut.
     *
     * @return A View inflated from R.layout.application.
     */
    View createShortcut(ShortcutInfo info) {
        return createShortcut(R.layout.application,
                (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentPage()), info);
    }

    /**
     * Creates a view representing a shortcut inflated from the specified resource.
     *
     * @param layoutResId The id of the XML layout used to create the shortcut.
     * @param parent The group the shortcut belongs to.
     * @param info The data structure describing the shortcut.
     *
     * @return A View inflated from layoutResId.
     */
    View createShortcut(int layoutResId, ViewGroup parent, ShortcutInfo info) {
        BubbleTextView favorite = (BubbleTextView) mInflater.inflate(layoutResId, parent, false);
        favorite.applyFromShortcutInfo(info, mIconCache);
        favorite.setTextVisible(!mHideIconLabels);
        favorite.setOnClickListener(this);
        favorite.setOnTouchListener(this);
        return favorite;
    }

    /**
     * Add an application shortcut to the workspace.
     *
     * @param data The intent describing the application.
     * @param cellInfo The position on screen where to create the shortcut.
     */
    void completeAddApplication(Intent data, long container, int screen, int cellX, int cellY) {
        final int[] cellXY = mTmpAddItemCellCoordinates;
        final CellLayout layout = getCellLayout(container, screen);

        // First we check if we already know the exact location where we want to add this item.
        if (cellX >= 0 && cellY >= 0) {
            cellXY[0] = cellX;
            cellXY[1] = cellY;
        } else if (!layout.findCellForSpan(cellXY, 1, 1)) {
            showOutOfSpaceMessage(isHotseatLayout(layout));
            return;
        }

        final ShortcutInfo info = mModel.getShortcutInfo(getPackageManager(), data, this);

        if (info != null) {
            info.setActivity(data.getComponent(), Intent.FLAG_ACTIVITY_NEW_TASK |
                    Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
            info.container = com.cyanogenmod.trebuchet.ItemInfo.NO_ID;
            mWorkspace.addApplicationShortcut(info, layout, container, screen,
                    isWorkspaceLocked(), cellX, cellY);
        } else {
            Log.e(TAG, "Couldn't find ActivityInfo for selected application: " + data);
        }
    }

    private void restoreShortcut(ShortcutInfo info) {
        final View view = createShortcut(info);
        FolderInfo folderInfo = info.mFolderInfo;
        if (info.container >= 0 && folderInfo  != null) {
            // The shortcut was contained by a folder
            // It's necessary to recreate the folder or just to add to the existing one?
            CellLayout layout = getCellLayout(folderInfo.container, folderInfo.screen);
            View v = layout.getChildAt(folderInfo.cellX, folderInfo.cellY);
            if (v == null) {
                // Weird. Should not there be a shortcut or folder here?
                return;
            }
            if (v.getTag() != null && v.getTag() instanceof ShortcutInfo) {
                // Create a new folder
                ShortcutInfo target = (ShortcutInfo)v.getTag();
                // Remove the target item to allow to be occupied by the folder
                layout.removeView(v);

                // Create the folder and its new items
                FolderIcon fi = addFolder(
                                    layout, folderInfo.container, folderInfo.screen,
                                    folderInfo.cellX, folderInfo.cellY);
                int cellX = info.cellX;
                int cellY = info.cellY;
                info.cellX = -1;
                info.cellY = -1;
                target.cellX = -1;
                target.cellY = -1;
                if (cellX == 0 && cellY == 0) {
                    fi.addItem(info);
                    fi.addItem(target);
                } else {
                    fi.addItem(target);
                    fi.addItem(info);
                }
            }
        } else if (info.container >= 0) {
            // The shortcut was contained by a folder and the folder still exists
            FolderIcon folderIcon = null;

            // We need to find the container in the workspace, because the shortcut has lost
            // its information
            ArrayList<ShortcutAndWidgetContainer> allSwc =
                    mWorkspace.getAllShortcutAndWidgetContainers();
            for (ShortcutAndWidgetContainer swc : allSwc) {
                int cc = swc.getChildCount();
                for (int i = 0; i < cc; i++) {
                    View v = swc.getChildAt(i);
                    if (v instanceof FolderIcon) {
                        FolderInfo fi = (FolderInfo)v.getTag();
                        if (fi != null && fi.id == info.container) {
                            folderIcon = (FolderIcon)v;
                            break;
                        }
                    }
                }
                if (folderIcon != null) {
                    break;
                }
            }

            if (folderIcon != null) {
                folderIcon.addItem(info);
            }

        } else {
            // Just restore the shortcut in its last position
            long con…

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