/*
 * Copyright (C) 2006 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.android.internal.policy;

import static android.view.View.MeasureSpec.AT_MOST;
import static android.view.View.MeasureSpec.EXACTLY;
import static android.view.View.MeasureSpec.getMode;
import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
import static android.view.WindowManager.LayoutParams.*;

import android.animation.Animator;
import android.animation.ObjectAnimator;
import android.app.ActivityManagerNative;
import android.app.SearchManager;
import android.os.Build;
import android.os.UserHandle;

import android.view.ActionMode;
import android.view.ContextThemeWrapper;
import android.view.Display;
import android.view.Gravity;
import android.view.IRotationWatcher.Stub;
import android.view.IWindowManager;
import android.view.InputDevice;
import android.view.InputEvent;
import android.view.InputQueue;
import android.view.KeyCharacterMap;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.SearchEvent;
import android.view.SurfaceHolder.Callback2;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.ViewGroup;
import android.view.ViewManager;
import android.view.ViewParent;
import android.view.ViewRootImpl;
import android.view.ViewStub;
import android.view.ViewTreeObserver.OnPreDrawListener;
import android.view.Window;
import android.view.WindowInsets;
import android.view.WindowManager;
import com.android.internal.R;
import com.android.internal.view.FloatingActionMode;
import com.android.internal.view.RootViewSurfaceTaker;
import com.android.internal.view.StandaloneActionMode;
import com.android.internal.view.menu.ContextMenuBuilder;
import com.android.internal.view.menu.IconMenuPresenter;
import com.android.internal.view.menu.ListMenuPresenter;
import com.android.internal.view.menu.MenuBuilder;
import com.android.internal.view.menu.MenuDialogHelper;
import com.android.internal.view.menu.MenuPresenter;
import com.android.internal.view.menu.MenuView;
import com.android.internal.widget.ActionBarContextView;
import com.android.internal.widget.BackgroundFallback;
import com.android.internal.widget.DecorContentParent;
import com.android.internal.widget.FloatingToolbar;
import com.android.internal.widget.SwipeDismissLayout;

import android.app.ActivityManager;
import android.app.KeyguardManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.res.Configuration;
import android.content.res.Resources.Theme;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.PixelFormat;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.media.AudioManager;
import android.media.session.MediaController;
import android.media.session.MediaSessionLegacyHelper;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.Parcel;
import android.os.Parcelable;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.transition.Scene;
import android.transition.Transition;
import android.transition.TransitionInflater;
import android.transition.TransitionManager;
import android.transition.TransitionSet;
import android.util.AndroidRuntimeException;
import android.util.DisplayMetrics;
import android.util.EventLog;
import android.util.Log;
import android.util.SparseArray;
import android.util.TypedValue;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityManager;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.view.animation.Interpolator;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.PopupWindow;
import android.widget.ProgressBar;
import android.widget.TextView;

import java.lang.ref.WeakReference;
import java.util.ArrayList;

/**
 * Android-specific Window.
 * <p>
 * todo: need to pull the generic functionality out into a base class
 * in android.widget.
 *
 * @hide
 */
public class PhoneWindow extends Window implements MenuBuilder.Callback {

    private final static String TAG = "PhoneWindow";

    private final static boolean SWEEP_OPEN_MENU = false;

    private final static int DEFAULT_BACKGROUND_FADE_DURATION_MS = 300;

    private static final int CUSTOM_TITLE_COMPATIBLE_FEATURES = DEFAULT_FEATURES |
            (1 << FEATURE_CUSTOM_TITLE) |
            (1 << FEATURE_CONTENT_TRANSITIONS) |
            (1 << FEATURE_ACTIVITY_TRANSITIONS) |
            (1 << FEATURE_ACTION_MODE_OVERLAY);

    private static final Transition USE_DEFAULT_TRANSITION = new TransitionSet();

    /**
     * Simple callback used by the context menu and its submenus. The options
     * menu submenus do not use this (their behavior is more complex).
     */
    final DialogMenuCallback mContextMenuCallback = new DialogMenuCallback(FEATURE_CONTEXT_MENU);

    final TypedValue mMinWidthMajor = new TypedValue();
    final TypedValue mMinWidthMinor = new TypedValue();
    TypedValue mFixedWidthMajor;
    TypedValue mFixedWidthMinor;
    TypedValue mFixedHeightMajor;
    TypedValue mFixedHeightMinor;

    // This is the top-level view of the window, containing the window decor.
    private DecorView mDecor;

    // This is the view in which the window contents are placed. It is either
    // mDecor itself, or a child of mDecor where the contents go.
    private ViewGroup mContentParent;

    private ViewGroup mContentRoot;

    Callback2 mTakeSurfaceCallback;

    InputQueue.Callback mTakeInputQueueCallback;

    private boolean mIsFloating;

    private LayoutInflater mLayoutInflater;

    private TextView mTitleView;

    private DecorContentParent mDecorContentParent;
    private ActionMenuPresenterCallback mActionMenuPresenterCallback;
    private PanelMenuPresenterCallback mPanelMenuPresenterCallback;

    private TransitionManager mTransitionManager;
    private Scene mContentScene;

    // The icon resource has been explicitly set elsewhere
    // and should not be overwritten with a default.
    static final int FLAG_RESOURCE_SET_ICON = 1 << 0;

    // The logo resource has been explicitly set elsewhere
    // and should not be overwritten with a default.
    static final int FLAG_RESOURCE_SET_LOGO = 1 << 1;

    // The icon resource is currently configured to use the system fallback
    // as no default was previously specified. Anything can override this.
    static final int FLAG_RESOURCE_SET_ICON_FALLBACK = 1 << 2;

    int mResourcesSetFlags;
    int mIconRes;
    int mLogoRes;

    private DrawableFeatureState[] mDrawables;

    private PanelFeatureState[] mPanels;

    /**
     * The panel that is prepared or opened (the most recent one if there are
     * multiple panels). Shortcuts will go to this panel. It gets set in
     * {@link #preparePanel} and cleared in {@link #closePanel}.
     */
    private PanelFeatureState mPreparedPanel;

    /**
     * The keycode that is currently held down (as a modifier) for chording. If
     * this is 0, there is no key held down.
     */
    private int mPanelChordingKey;

    private ImageView mLeftIconView;

    private ImageView mRightIconView;

    private ProgressBar mCircularProgressBar;

    private ProgressBar mHorizontalProgressBar;

    private int mBackgroundResource = 0;
    private int mBackgroundFallbackResource = 0;

    private Drawable mBackgroundDrawable;

    private float mElevation;

    /** Whether window content should be clipped to the background outline. */
    private boolean mClipToOutline;

    private int mFrameResource = 0;

    private int mTextColor = 0;
    private int mStatusBarColor = 0;
    private int mNavigationBarColor = 0;
    private boolean mForcedStatusBarColor = false;
    private boolean mForcedNavigationBarColor = false;

    private CharSequence mTitle = null;

    private int mTitleColor = 0;

    private boolean mAlwaysReadCloseOnTouchAttr = false;

    private ContextMenuBuilder mContextMenu;
    private MenuDialogHelper mContextMenuHelper;
    private boolean mClosingActionMenu;

    private int mVolumeControlStreamType = AudioManager.USE_DEFAULT_STREAM_TYPE;
    private MediaController mMediaController;

    private AudioManager mAudioManager;
    private KeyguardManager mKeyguardManager;

    private int mUiOptions = 0;

    private boolean mInvalidatePanelMenuPosted;
    private int mInvalidatePanelMenuFeatures;
    private final Runnable mInvalidatePanelMenuRunnable = new Runnable() {
        @Override public void run() {
            for (int i = 0; i <= FEATURE_MAX; i++) {
                if ((mInvalidatePanelMenuFeatures & 1 << i) != 0) {
                    doInvalidatePanelMenu(i);
                }
            }
            mInvalidatePanelMenuPosted = false;
            mInvalidatePanelMenuFeatures = 0;
        }
    };

    private Transition mEnterTransition = null;
    private Transition mReturnTransition = USE_DEFAULT_TRANSITION;
    private Transition mExitTransition = null;
    private Transition mReenterTransition = USE_DEFAULT_TRANSITION;
    private Transition mSharedElementEnterTransition = null;
    private Transition mSharedElementReturnTransition = USE_DEFAULT_TRANSITION;
    private Transition mSharedElementExitTransition = null;
    private Transition mSharedElementReenterTransition = USE_DEFAULT_TRANSITION;
    private Boolean mAllowReturnTransitionOverlap;
    private Boolean mAllowEnterTransitionOverlap;
    private long mBackgroundFadeDurationMillis = -1;
    private Boolean mSharedElementsUseOverlay;

    private Rect mTempRect;
    private Rect mOutsets = new Rect();

    private boolean mIsStartingWindow;

    static class WindowManagerHolder {
        static final IWindowManager sWindowManager = IWindowManager.Stub.asInterface(
                ServiceManager.getService("window"));
    }

    static final RotationWatcher sRotationWatcher = new RotationWatcher();

    public PhoneWindow(Context context) {
        super(context);
        mLayoutInflater = LayoutInflater.from(context);
    }

    @Override
    public final void setContainer(Window container) {
        super.setContainer(container);
    }

    @Override
    public boolean requestFeature(int featureId) {
        if (mContentParent != null) {
            throw new AndroidRuntimeException("requestFeature() must be called before adding content");
        }
        final int features = getFeatures();
        final int newFeatures = features | (1 << featureId);
        if ((newFeatures & (1 << FEATURE_CUSTOM_TITLE)) != 0 &&
                (newFeatures & ~CUSTOM_TITLE_COMPATIBLE_FEATURES) != 0) {
            // Another feature is enabled and the user is trying to enable the custom title feature
            // or custom title feature is enabled and the user is trying to enable another feature
            throw new AndroidRuntimeException(
                    "You cannot combine custom titles with other title features");
        }
        if ((features & (1 << FEATURE_NO_TITLE)) != 0 && featureId == FEATURE_ACTION_BAR) {
            return false; // Ignore. No title dominates.
        }
        if ((features & (1 << FEATURE_ACTION_BAR)) != 0 && featureId == FEATURE_NO_TITLE) {
            // Remove the action bar feature if we have no title. No title dominates.
            removeFeature(FEATURE_ACTION_BAR);
        }

        if ((features & (1 << FEATURE_ACTION_BAR)) != 0 && featureId == FEATURE_SWIPE_TO_DISMISS) {
            throw new AndroidRuntimeException(
                    "You cannot combine swipe dismissal and the action bar.");
        }
        if ((features & (1 << FEATURE_SWIPE_TO_DISMISS)) != 0 && featureId == FEATURE_ACTION_BAR) {
            throw new AndroidRuntimeException(
                    "You cannot combine swipe dismissal and the action bar.");
        }

        if (featureId == FEATURE_INDETERMINATE_PROGRESS &&
                getContext().getPackageManager().hasSystemFeature(PackageManager.FEATURE_WATCH)) {
            throw new AndroidRuntimeException("You cannot use indeterminate progress on a watch.");
        }
        return super.requestFeature(featureId);
    }

    @Override
    public void setUiOptions(int uiOptions) {
        mUiOptions = uiOptions;
    }

    @Override
    public void setUiOptions(int uiOptions, int mask) {
        mUiOptions = (mUiOptions & ~mask) | (uiOptions & mask);
    }

    @Override
    public TransitionManager getTransitionManager() {
        return mTransitionManager;
    }

    @Override
    public void setTransitionManager(TransitionManager tm) {
        mTransitionManager = tm;
    }

    @Override
    public Scene getContentScene() {
        return mContentScene;
    }

    @Override
    public void setContentView(int layoutResID) {
        // Note: FEATURE_CONTENT_TRANSITIONS may be set in the process of installing the window
        // decor, when theme attributes and the like are crystalized. Do not check the feature
        // before this happens.
        if (mContentParent == null) {
            installDecor();
        } else if (!hasFeature(FEATURE_CONTENT_TRANSITIONS)) {
            mContentParent.removeAllViews();
        }

        if (hasFeature(FEATURE_CONTENT_TRANSITIONS)) {
            final Scene newScene = Scene.getSceneForLayout(mContentParent, layoutResID,
                    getContext());
            transitionTo(newScene);
        } else {
            mLayoutInflater.inflate(layoutResID, mContentParent);
        }
        mContentParent.requestApplyInsets();
        final Callback cb = getCallback();
        if (cb != null && !isDestroyed()) {
            cb.onContentChanged();
        }
    }

    @Override
    public void setContentView(View view) {
        setContentView(view, new ViewGroup.LayoutParams(MATCH_PARENT, MATCH_PARENT));
    }

    @Override
    public void setContentView(View view, ViewGroup.LayoutParams params) {
        // Note: FEATURE_CONTENT_TRANSITIONS may be set in the process of installing the window
        // decor, when theme attributes and the like are crystalized. Do not check the feature
        // before this happens.
        if (mContentParent == null) {
            installDecor();
        } else if (!hasFeature(FEATURE_CONTENT_TRANSITIONS)) {
            mContentParent.removeAllViews();
        }

        if (hasFeature(FEATURE_CONTENT_TRANSITIONS)) {
            view.setLayoutParams(params);
            final Scene newScene = new Scene(mContentParent, view);
            transitionTo(newScene);
        } else {
            mContentParent.addView(view, params);
        }
        mContentParent.requestApplyInsets();
        final Callback cb = getCallback();
        if (cb != null && !isDestroyed()) {
            cb.onContentChanged();
        }
    }

    @Override
    public void addContentView(View view, ViewGroup.LayoutParams params) {
        if (mContentParent == null) {
            installDecor();
        }
        if (hasFeature(FEATURE_CONTENT_TRANSITIONS)) {
            // TODO Augment the scenes/transitions API to support this.
            Log.v(TAG, "addContentView does not support content transitions");
        }
        mContentParent.addView(view, params);
        mContentParent.requestApplyInsets();
        final Callback cb = getCallback();
        if (cb != null && !isDestroyed()) {
            cb.onContentChanged();
        }
    }

    private void transitionTo(Scene scene) {
        if (mContentScene == null) {
            scene.enter();
        } else {
            mTransitionManager.transitionTo(scene);
        }
        mContentScene = scene;
    }

    @Override
    public View getCurrentFocus() {
        return mDecor != null ? mDecor.findFocus() : null;
    }

    @Override
    public void takeSurface(Callback2 callback) {
        mTakeSurfaceCallback = callback;
    }

    public void takeInputQueue(InputQueue.Callback callback) {
        mTakeInputQueueCallback = callback;
    }

    @Override
    public boolean isFloating() {
        return mIsFloating;
    }

    /**
     * Return a LayoutInflater instance that can be used to inflate XML view layout
     * resources for use in this Window.
     *
     * @return LayoutInflater The shared LayoutInflater.
     */
    @Override
    public LayoutInflater getLayoutInflater() {
        return mLayoutInflater;
    }

    @Override
    public void setTitle(CharSequence title) {
        if (mTitleView != null) {
            mTitleView.setText(title);
        } else if (mDecorContentParent != null) {
            mDecorContentParent.setWindowTitle(title);
        }
        mTitle = title;
    }

    @Override
    @Deprecated
    public void setTitleColor(int textColor) {
        if (mTitleView != null) {
            mTitleView.setTextColor(textColor);
        }
        mTitleColor = textColor;
    }

    /**
     * Prepares the panel to either be opened or chorded. This creates the Menu
     * instance for the panel and populates it via the Activity callbacks.
     *
     * @param st The panel state to prepare.
     * @param event The event that triggered the preparing of the panel.
     * @return Whether the panel was prepared. If the panel should not be shown,
     *         returns false.
     */
    public final boolean preparePanel(PanelFeatureState st, KeyEvent event) {
        if (isDestroyed()) {
            return false;
        }

        // Already prepared (isPrepared will be reset to false later)
        if (st.isPrepared) {
            return true;
        }

        if ((mPreparedPanel != null) && (mPreparedPanel != st)) {
            // Another Panel is prepared and possibly open, so close it
            closePanel(mPreparedPanel, false);
        }

        final Callback cb = getCallback();

        if (cb != null) {
            st.createdPanelView = cb.onCreatePanelView(st.featureId);
        }

        final boolean isActionBarMenu =
                (st.featureId == FEATURE_OPTIONS_PANEL || st.featureId == FEATURE_ACTION_BAR);

        if (isActionBarMenu && mDecorContentParent != null) {
            // Enforce ordering guarantees around events so that the action bar never
            // dispatches menu-related events before the panel is prepared.
            mDecorContentParent.setMenuPrepared();
        }

        if (st.createdPanelView == null) {
            // Init the panel state's menu--return false if init failed
            if (st.menu == null || st.refreshMenuContent) {
                if (st.menu == null) {
                    if (!initializePanelMenu(st) || (st.menu == null)) {
                        return false;
                    }
                }

                if (isActionBarMenu && mDecorContentParent != null) {
                    if (mActionMenuPresenterCallback == null) {
                        mActionMenuPresenterCallback = new ActionMenuPresenterCallback();
                    }
                    mDecorContentParent.setMenu(st.menu, mActionMenuPresenterCallback);
                }

                // Call callback, and return if it doesn't want to display menu.

                // Creating the panel menu will involve a lot of manipulation;
                // don't dispatch change events to presenters until we're done.
                st.menu.stopDispatchingItemsChanged();
                if ((cb == null) || !cb.onCreatePanelMenu(st.featureId, st.menu)) {
                    // Ditch the menu created above
                    st.setMenu(null);

                    if (isActionBarMenu && mDecorContentParent != null) {
                        // Don't show it in the action bar either
                        mDecorContentParent.setMenu(null, mActionMenuPresenterCallback);
                    }

                    return false;
                }

                st.refreshMenuContent = false;
            }

            // Callback and return if the callback does not want to show the menu

            // Preparing the panel menu can involve a lot of manipulation;
            // don't dispatch change events to presenters until we're done.
            st.menu.stopDispatchingItemsChanged();

            // Restore action view state before we prepare. This gives apps
            // an opportunity to override frozen/restored state in onPrepare.
            if (st.frozenActionViewState != null) {
                st.menu.restoreActionViewStates(st.frozenActionViewState);
                st.frozenActionViewState = null;
            }

            if (!cb.onPreparePanel(st.featureId, st.createdPanelView, st.menu)) {
                if (isActionBarMenu && mDecorContentParent != null) {
                    // The app didn't want to show the menu for now but it still exists.
                    // Clear it out of the action bar.
                    mDecorContentParent.setMenu(null, mActionMenuPresenterCallback);
                }
                st.menu.startDispatchingItemsChanged();
                return false;
            }

            // Set the proper keymap
            KeyCharacterMap kmap = KeyCharacterMap.load(
                    event != null ? event.getDeviceId() : KeyCharacterMap.VIRTUAL_KEYBOARD);
            st.qwertyMode = kmap.getKeyboardType() != KeyCharacterMap.NUMERIC;
            st.menu.setQwertyMode(st.qwertyMode);
            st.menu.startDispatchingItemsChanged();
        }

        // Set other state
        st.isPrepared = true;
        st.isHandled = false;
        mPreparedPanel = st;

        return true;
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        // Action bars handle their own menu state
        if (mDecorContentParent == null) {
            PanelFeatureState st = getPanelState(FEATURE_OPTIONS_PANEL, false);
            if ((st != null) && (st.menu != null)) {
                if (st.isOpen) {
                    // Freeze state
                    final Bundle state = new Bundle();
                    if (st.iconMenuPresenter != null) {
                        st.iconMenuPresenter.saveHierarchyState(state);
                    }
                    if (st.listMenuPresenter != null) {
                        st.listMenuPresenter.saveHierarchyState(state);
                    }

                    // Remove the menu views since they need to be recreated
                    // according to the new configuration
                    clearMenuViews(st);

                    // Re-open the same menu
                    reopenMenu(false);

                    // Restore state
                    if (st.iconMenuPresenter != null) {
                        st.iconMenuPresenter.restoreHierarchyState(state);
                    }
                    if (st.listMenuPresenter != null) {
                        st.listMenuPresenter.restoreHierarchyState(state);
                    }

                } else {
                    // Clear menu views so on next menu opening, it will use
                    // the proper layout
                    clearMenuViews(st);
                }
            }
        }
    }

    private static void clearMenuViews(PanelFeatureState st) {
        // This can be called on config changes, so we should make sure
        // the views will be reconstructed based on the new orientation, etc.

        // Allow the callback to create a new panel view
        st.createdPanelView = null;

        // Causes the decor view to be recreated
        st.refreshDecorView = true;

        st.clearMenuPresenters();
    }

    @Override
    public final void openPanel(int featureId, KeyEvent event) {
        if (featureId == FEATURE_OPTIONS_PANEL && mDecorContentParent != null &&
                mDecorContentParent.canShowOverflowMenu() &&
                !ViewConfiguration.get(getContext()).hasPermanentMenuKey()) {
            mDecorContentParent.showOverflowMenu();
        } else {
            openPanel(getPanelState(featureId, true), event);
        }
    }

    private void openPanel(final PanelFeatureState st, KeyEvent event) {
        // System.out.println("Open panel: isOpen=" + st.isOpen);

        // Already open, return
        if (st.isOpen || isDestroyed()) {
            return;
        }

        // Don't open an options panel for honeycomb apps on xlarge devices.
        // (The app should be using an action bar for menu items.)
        if (st.featureId == FEATURE_OPTIONS_PANEL) {
            Context context = getContext();
            Configuration config = context.getResources().getConfiguration();
            boolean isXLarge = (config.screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) ==
                    Configuration.SCREENLAYOUT_SIZE_XLARGE;
            boolean isHoneycombApp = context.getApplicationInfo().targetSdkVersion >=
                    android.os.Build.VERSION_CODES.HONEYCOMB;

            if (isXLarge && isHoneycombApp) {
                return;
            }
        }

        Callback cb = getCallback();
        if ((cb != null) && (!cb.onMenuOpened(st.featureId, st.menu))) {
            // Callback doesn't want the menu to open, reset any state
            closePanel(st, true);
            return;
        }

        final WindowManager wm = getWindowManager();
        if (wm == null) {
            return;
        }

        // Prepare panel (should have been done before, but just in case)
        if (!preparePanel(st, event)) {
            return;
        }

        int width = WRAP_CONTENT;
        if (st.decorView == null || st.refreshDecorView) {
            if (st.decorView == null) {
                // Initialize the panel decor, this will populate st.decorView
                if (!initializePanelDecor(st) || (st.decorView == null))
                    return;
            } else if (st.refreshDecorView && (st.decorView.getChildCount() > 0)) {
                // Decor needs refreshing, so remove its views
                st.decorView.removeAllViews();
            }

            // This will populate st.shownPanelView
            if (!initializePanelContent(st) || !st.hasPanelItems()) {
                return;
            }

            ViewGroup.LayoutParams lp = st.shownPanelView.getLayoutParams();
            if (lp == null) {
                lp = new ViewGroup.LayoutParams(WRAP_CONTENT, WRAP_CONTENT);
            }

            int backgroundResId;
            if (lp.width == ViewGroup.LayoutParams.MATCH_PARENT) {
                // If the contents is fill parent for the width, set the
                // corresponding background
                backgroundResId = st.fullBackground;
                width = MATCH_PARENT;
            } else {
                // Otherwise, set the normal panel background
                backgroundResId = st.background;
            }
            st.decorView.setWindowBackground(getContext().getDrawable(
                    backgroundResId));

            ViewParent shownPanelParent = st.shownPanelView.getParent();
            if (shownPanelParent != null && shownPanelParent instanceof ViewGroup) {
                ((ViewGroup) shownPanelParent).removeView(st.shownPanelView);
            }
            st.decorView.addView(st.shownPanelView, lp);

            /*
             * Give focus to the view, if it or one of its children does not
             * already have it.
             */
            if (!st.shownPanelView.hasFocus()) {
                st.shownPanelView.requestFocus();
            }
        } else if (!st.isInListMode()) {
            width = MATCH_PARENT;
        } else if (st.createdPanelView != null) {
            // If we already had a panel view, carry width=MATCH_PARENT through
            // as we did above when it was created.
            ViewGroup.LayoutParams lp = st.createdPanelView.getLayoutParams();
            if (lp != null && lp.width == ViewGroup.LayoutParams.MATCH_PARENT) {
                width = MATCH_PARENT;
            }
        }

        st.isHandled = false;

        WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
                width, WRAP_CONTENT,
                st.x, st.y, WindowManager.LayoutParams.TYPE_APPLICATION_ATTACHED_DIALOG,
                WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM
                | WindowManager.LayoutParams.FLAG_SPLIT_TOUCH,
                st.decorView.mDefaultOpacity);

        if (st.isCompact) {
            lp.gravity = getOptionsPanelGravity();
            sRotationWatcher.addWindow(this);
        } else {
            lp.gravity = st.gravity;
        }

        lp.windowAnimations = st.windowAnimations;

        wm.addView(st.decorView, lp);
        st.isOpen = true;
        // Log.v(TAG, "Adding main menu to window manager.");
    }

    @Override
    public final void closePanel(int featureId) {
        if (featureId == FEATURE_OPTIONS_PANEL && mDecorContentParent != null &&
                mDecorContentParent.canShowOverflowMenu() &&
                !ViewConfiguration.get(getContext()).hasPermanentMenuKey()) {
            mDecorContentParent.hideOverflowMenu();
        } else if (featureId == FEATURE_CONTEXT_MENU) {
            closeContextMenu();
        } else {
            closePanel(getPanelState(featureId, true), true);
        }
    }

    /**
     * Closes the given panel.
     *
     * @param st The panel to be closed.
     * @param doCallback Whether to notify the callback that the panel was
     *            closed. If the panel is in the process of re-opening or
     *            opening another panel (e.g., menu opening a sub menu), the
     *            callback should not happen and this variable should be false.
     *            In addition, this method internally will only perform the
     *            callback if the panel is open.
     */
    public final void closePanel(PanelFeatureState st, boolean doCallback) {
        // System.out.println("Close panel: isOpen=" + st.isOpen);
        if (doCallback && st.featureId == FEATURE_OPTIONS_PANEL &&
                mDecorContentParent != null && mDecorContentParent.isOverflowMenuShowing()) {
            checkCloseActionMenu(st.menu);
            return;
        }

        final ViewManager wm = getWindowManager();
        if ((wm != null) && st.isOpen) {
            if (st.decorView != null) {
                wm.removeView(st.decorView);
                // Log.v(TAG, "Removing main menu from window manager.");
                if (st.isCompact) {
                    sRotationWatcher.removeWindow(this);
                }
            }

            if (doCallback) {
                callOnPanelClosed(st.featureId, st, null);
            }
        }

        st.isPrepared = false;
        st.isHandled = false;
        st.isOpen = false;

        // This view is no longer shown, so null it out
        st.shownPanelView = null;

        if (st.isInExpandedMode) {
            // Next time the menu opens, it should not be in expanded mode, so
            // force a refresh of the decor
            st.refreshDecorView = true;
            st.isInExpandedMode = false;
        }

        if (mPreparedPanel == st) {
            mPreparedPanel = null;
            mPanelChordingKey = 0;
        }
    }

    void checkCloseActionMenu(Menu menu) {
        if (mClosingActionMenu) {
            return;
        }

        mClosingActionMenu = true;
        mDecorContentParent.dismissPopups();
        Callback cb = getCallback();
        if (cb != null && !isDestroyed()) {
            cb.onPanelClosed(FEATURE_ACTION_BAR, menu);
        }
        mClosingActionMenu = false;
    }

    @Override
    public final void togglePanel(int featureId, KeyEvent event) {
        PanelFeatureState st = getPanelState(featureId, true);
        if (st.isOpen) {
            closePanel(st, true);
        } else {
            openPanel(st, event);
        }
    }

    @Override
    public void invalidatePanelMenu(int featureId) {
        mInvalidatePanelMenuFeatures |= 1 << featureId;

        if (!mInvalidatePanelMenuPosted && mDecor != null) {
            mDecor.postOnAnimation(mInvalidatePanelMenuRunnable);
            mInvalidatePanelMenuPosted = true;
        }
    }

    void doPendingInvalidatePanelMenu() {
        if (mInvalidatePanelMenuPosted) {
            mDecor.removeCallbacks(mInvalidatePanelMenuRunnable);
            mInvalidatePanelMenuRunnable.run();
        }
    }

    void doInvalidatePanelMenu(int featureId) {
        PanelFeatureState st = getPanelState(featureId, false);
        if (st == null) {
            return;
        }
        Bundle savedActionViewStates = null;
        if (st.menu != null) {
            savedActionViewStates = new Bundle();
            st.menu.saveActionViewStates(savedActionViewStates);
            if (savedActionViewStates.size() > 0) {
                st.frozenActionViewState = savedActionViewStates;
            }
            // This will be started again when the panel is prepared.
            st.menu.stopDispatchingItemsChanged();
            st.menu.clear();
        }
        st.refreshMenuContent = true;
        st.refreshDecorView = true;

        // Prepare the options panel if we have an action bar
        if ((featureId == FEATURE_ACTION_BAR || featureId == FEATURE_OPTIONS_PANEL)
                && mDecorContentParent != null) {
            st = getPanelState(Window.FEATURE_OPTIONS_PANEL, false);
            if (st != null) {
                st.isPrepared = false;
                preparePanel(st, null);
            }
        }
    }

    /**
     * Called when the panel key is pushed down.
     * @param featureId The feature ID of the relevant panel (defaults to FEATURE_OPTIONS_PANEL}.
     * @param event The key event.
     * @return Whether the key was handled.
     */
    public final boolean onKeyDownPanel(int featureId, KeyEvent event) {
        final int keyCode = event.getKeyCode();

        if (event.getRepeatCount() == 0) {
            // The panel key was pushed, so set the chording key
            mPanelChordingKey = keyCode;

            PanelFeatureState st = getPanelState(featureId, false);
            if (st != null && !st.isOpen) {
                return preparePanel(st, event);
            }
        }

        return false;
    }

    /**
     * Called when the panel key is released.
     * @param featureId The feature ID of the relevant panel (defaults to FEATURE_OPTIONS_PANEL}.
     * @param event The key event.
     */
    public final void onKeyUpPanel(int featureId, KeyEvent event) {
        // The panel key was released, so clear the chording key
        if (mPanelChordingKey != 0) {
            mPanelChordingKey = 0;

            final PanelFeatureState st = getPanelState(featureId, false);

            if (event.isCanceled() || (mDecor != null && mDecor.mPrimaryActionMode != null) ||
                    (st == null)) {
                return;
            }

            boolean playSoundEffect = false;
            if (featureId == FEATURE_OPTIONS_PANEL && mDecorContentParent != null &&
                    mDecorContentParent.canShowOverflowMenu() &&
                    !ViewConfiguration.get(getContext()).hasPermanentMenuKey()) {
                if (!mDecorContentParent.isOverflowMenuShowing()) {
                    if (!isDestroyed() && preparePanel(st, event)) {
                        playSoundEffect = mDecorContentParent.showOverflowMenu();
                    }
                } else {
                    playSoundEffect = mDecorContentParent.hideOverflowMenu();
                }
            } else {
                if (st.isOpen || st.isHandled) {

                    // Play the sound effect if the user closed an open menu (and not if
                    // they just released a menu shortcut)
                    playSoundEffect = st.isOpen;

                    // Close menu
                    closePanel(st, true);

                } else if (st.isPrepared) {
                    boolean show = true;
                    if (st.refreshMenuContent) {
                        // Something may have invalidated the menu since we prepared it.
                        // Re-prepare it to refresh.
                        st.isPrepared = false;
                        show = preparePanel(st, event);
                    }

                    if (show) {
                        // Write 'menu opened' to event log
                        EventLog.writeEvent(50001, 0);

                        // Show menu
                        openPanel(st, event);

                        playSoundEffect = true;
                    }
                }
            }

            if (playSoundEffect) {
                AudioManager audioManager = (AudioManager) getContext().getSystemService(
                        Context.AUDIO_SERVICE);
                if (audioManager != null) {
                    audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK);
                } else {
                    Log.w(TAG, "Couldn't get audio manager");
                }
            }
        }
    }

    @Override
    public final void closeAllPanels() {
        final ViewManager wm = getWindowManager();
        if (wm == null) {
            return;
        }

        final PanelFeatureState[] panels = mPanels;
        final int N = panels != null ? panels.length : 0;
        for (int i = 0; i < N; i++) {
            final PanelFeatureState panel = panels[i];
            if (panel != null) {
                closePanel(panel, true);
            }
        }

        closeContextMenu();
    }

    /**
     * Closes the context menu. This notifies the menu logic of the close, along
     * with dismissing it from the UI.
     */
    private synchronized void closeContextMenu() {
        if (mContextMenu != null) {
            mContextMenu.close();
            dismissContextMenu();
        }
    }

    /**
     * Dismisses just the context menu UI. To close the context menu, use
     * {@link #closeContextMenu()}.
     */
    private synchronized void dismissContextMenu() {
        mContextMenu = null;

        if (mContextMenuHelper != null) {
            mContextMenuHelper.dismiss();
            mContextMenuHelper = null;
        }
    }

    @Override
    public boolean performPanelShortcut(int featureId, int keyCode, KeyEvent event, int flags) {
        return performPanelShortcut(getPanelState(featureId, false), keyCode, event, flags);
    }

    private boolean performPanelShortcut(PanelFeatureState st, int keyCode, KeyEvent event,
            int flags) {
        if (event.isSystem() || (st == null)) {
            return false;
        }

        boolean handled = false;

        // Only try to perform menu shortcuts if preparePanel returned true (possible false
        // return value from application not wanting to show the menu).
        if ((st.isPrepared || preparePanel(st, event)) && st.menu != null) {
            // The menu is prepared now, perform the shortcut on it
            handled = st.menu.performShortcut(keyCode, event, flags);
        }

        if (handled) {
            // Mark as handled
            st.isHandled = true;

            // Only close down the menu if we don't have an action bar keeping it open.
            if ((flags & Menu.FLAG_PERFORM_NO_CLOSE) == 0 && mDecorContentParent == null) {
                closePanel(st, true);
            }
        }

        return handled;
    }

    @Override
    public boolean performPanelIdentifierAction(int featureId, int id, int flags) {

        PanelFeatureState st = getPanelState(featureId, true);
        if (!preparePanel(st, new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_MENU))) {
            return false;
        }
        if (st.menu == null) {
            return false;
        }

        boolean res = st.menu.performIdentifierAction(id, flags);

        // Only close down the menu if we don't have an action bar keeping it open.
        if (mDecorContentParent == null) {
            closePanel(st, true);
        }

        return res;
    }

    public PanelFeatureState findMenuPanel(Menu menu) {
        final PanelFeatureState[] panels = mPanels;
        final int N = panels != null ? panels.length : 0;
        for (int i = 0; i < N; i++) {
            final PanelFeatureState panel = panels[i];
            if (panel != null && panel.menu == menu) {
                return panel;
            }
        }
        return null;
    }

    public boolean onMenuItemSelected(MenuBuilder menu, MenuItem item) {
        final Callback cb = getCallback();
        if (cb != null && !isDestroyed()) {
            final PanelFeatureState panel = findMenuPanel(menu.getRootMenu());
            if (panel != null) {
                return cb.onMenuItemSelected(panel.featureId, item);
            }
        }
        return false;
    }

    public void onMenuModeChange(MenuBuilder menu) {
        reopenMenu(true);
    }

    private void reopenMenu(boolean toggleMenuMode) {
        if (mDecorContentParent != null && mDecorContentParent.canShowOverflowMenu() &&
                (!ViewConfiguration.get(getContext()).hasPermanentMenuKey() ||
                        mDecorContentParent.isOverflowMenuShowPending())) {
            final Callback cb = getCallback();
            if (!mDecorContentParent.isOverflowMenuShowing() || !toggleMenuMode) {
                if (cb != null && !isDestroyed()) {
                    // If we have a menu invalidation pending, do it now.
                    if (mInvalidatePanelMenuPosted &&
                            (mInvalidatePanelMenuFeatures & (1 << FEATURE_OPTIONS_PANEL)) != 0) {
                        mDecor.removeCallbacks(mInvalidatePanelMenuRunnable);
                        mInvalidatePanelMenuRunnable.run();
                    }

                    final PanelFeatureState st = getPanelState(FEATURE_OPTIONS_PANEL, false);

                    // If we don't have a menu or we're waiting for a full content refresh,
                    // forget it. This is a lingering event that no longer matters.
                    if (st != null && st.menu != null && !st.refreshMenuContent &&
                            cb.onPreparePanel(FEATURE_OPTIONS_PANEL, st.createdPanelView, st.menu)) {
                        cb.onMenuOpened(FEATURE_ACTION_BAR, st.menu);
                        mDecorContentParent.showOverflowMenu();
                    }
                }
            } else {
                mDecorContentParent.hideOverflowMenu();
                final PanelFeatureState st = getPanelState(FEATURE_OPTIONS_PANEL, false);
                if (st != null && cb != null && !isDestroyed()) {
                    cb.onPanelClosed(FEATURE_ACTION_BAR, st.menu);
                }
            }
            return;
        }

        PanelFeatureState st = getPanelState(FEATURE_OPTIONS_PANEL, false);

        if (st == null) {
            return;
        }

        // Save the future expanded mode state since closePanel will reset it
        boolean newExpandedMode = toggleMenuMode ? !st.isInExpandedMode : st.isInExpandedMode;

        st.refreshDecorView = true;
        closePanel(st, false);

        // Set the expanded mode state
        st.isInExpandedMode = newExpandedMode;

        openPanel(st, null);
    }

    /**
     * Initializes the menu associated with the given panel feature state. You
     * must at the very least set PanelFeatureState.menu to the Menu to be
     * associated with the given panel state. The default implementation creates
     * a new menu for the panel state.
     *
     * @param st The panel whose menu is being initialized.
     * @return Whether the initialization was successful.
     */
    protected boolean initializePanelMenu(final PanelFeatureState st) {
        Context context = getContext();

        // If we have an action bar, initialize the menu with the right theme.
        if ((st.featureId == FEATURE_OPTIONS_PANEL || st.featureId == FEATURE_ACTION_BAR) &&
                mDecorContentParent != null) {
            final TypedValue outValue = new TypedValue();
            final Theme baseTheme = context.getTheme();
            baseTheme.resolveAttribute(R.attr.actionBarTheme, outValue, true);

            Theme widgetTheme = null;
            if (outValue.resourceId != 0) {
                widgetTheme = context.getResources().newTheme();
                widgetTheme.setTo(baseTheme);
                widgetTheme.applyStyle(outValue.resourceId, true);
                widgetTheme.resolveAttribute(
                        R.attr.actionBarWidgetTheme, outValue, true);
            } else {
                baseTheme.resolveAttribute(
                        R.attr.actionBarWidgetTheme, outValue, true);
            }

            if (outValue.resourceId != 0) {
                if (widgetTheme == null) {
                    widgetTheme = context.getResources().newTheme();
                    widgetTheme.setTo(baseTheme);
                }
                widgetTheme.applyStyle(outValue.resourceId, true);
            }

            if (widgetTheme != null) {
                context = new ContextThemeWrapper(context, 0);
                context.getTheme().setTo(widgetTheme);
            }
        }

        final MenuBuilder menu = new MenuBuilder(context);
        menu.setCallback(this);
        st.setMenu(menu);

        return true;
    }

    /**
     * Perform initial setup of a panel. This should at the very least set the
     * style information in the PanelFeatureState and must set
     * PanelFeatureState.decor to the panel's window decor view.
     *
     * @param st The panel being initialized.
     */
    protected boolean initializePanelDecor(PanelFeatureState st) {
        st.decorView = new DecorView(getContext(), st.featureId);
        st.gravity = Gravity.CENTER | Gravity.BOTTOM;
        st.setStyle(getContext());
        TypedArray a = getContext().obtainStyledAttributes(null,
                R.styleable.Window, 0, st.listPresenterTheme);
        final float elevation = a.getDimension(R.styleable.Window_windowElevation, 0);
        if (elevation != 0) {
            st.decorView.setElevation(elevation);
        }
        a.recycle();

        return true;
    }

    /**
     * Determine the gravity value for the options panel. This can
     * differ in compact mode.
     *
     * @return gravity value to use for the panel window
     */
    private int getOptionsPanelGravity() {
        try {
            return WindowManagerHolder.sWindowManager.getPreferredOptionsPanelGravity();
        } catch (RemoteException ex) {
            Log.e(TAG, "Couldn't getOptionsPanelGravity; using default", ex);
            return Gravity.CENTER | Gravity.BOTTOM;
        }
    }

    void onOptionsPanelRotationChanged() {
        final PanelFeatureState st = getPanelState(FEATURE_OPTIONS_PANEL, false);
        if (st == null) return;

        final WindowManager.LayoutParams lp = st.decorView != null ?
                (WindowManager.LayoutParams) st.decorView.getLayoutParams() : null;
        if (lp != null) {
            lp.gravity = getOptionsPanelGravity();
            final ViewManager wm = getWindowManager();
            if (wm != null) {
                wm.updateViewLayout(st.decorView, lp);
            }
        }
    }

    /**
     * Initializes the panel associated with the panel feature state. You must
     * at the very least set PanelFeatureState.panel to the View implementing
     * its contents. The default implementation gets the panel from the menu.
     *
     * @param st The panel state being initialized.
     * @return Whether the initialization was successful.
     */
    protected boolean initializePanelContent(PanelFeatureState st) {
        if (st.createdPanelView != null) {
            st.shownPanelView = st.createdPanelView;
            return true;
        }

        if (st.menu == null) {
            return false;
        }

        if (mPanelMenuPresenterCallback == null) {
            mPanelMenuPresenterCallback = new PanelMenuPresenterCallback();
        }

        MenuView menuView = st.isInListMode()
                ? st.getListMenuView(getContext(), mPanelMenuPresenterCallback)
                : st.getIconMenuView(getContext(), mPanelMenuPresenterCallback);

        st.shownPanelView = (View) menuView;

        if (st.shownPanelView != null) {
            // Use the menu View's default animations if it has any
            final int defaultAnimations = menuView.getWindowAnimations();
            if (defaultAnimations != 0) {
                st.windowAnimations = defaultAnimations;
            }
            return true;
        } else {
            return false;
        }
    }

    @Override
    public boolean performContextMenuIdentifierAction(int id, int flags) {
        return (mContextMenu != null) ? mContextMenu.performIdentifierAction(id, flags) : false;
    }

    @Override
    public final void setElevation(float elevation) {
        mElevation = elevation;
        if (mDecor != null) {
            mDecor.setElevation(elevation);
        }
        dispatchWindowAttributesChanged(getAttributes());
    }

    @Override
    public final void setClipToOutline(boolean clipToOutline) {
        mClipToOutline = clipToOutline;
        if (mDecor != null) {
            mDecor.setClipToOutline(clipToOutline);
        }
    }

    @Override
    public final void setBackgroundDrawable(Drawable drawable) {
        if (drawable != mBackgroundDrawable || mBackgroundResource != 0) {
            mBackgroundResource = 0;
            mBackgroundDrawable = drawable;
            if (mDecor != null) {
                mDecor.setWindowBackground(drawable);
            }
            if (mBackgroundFallbackResource != 0) {
                mDecor.setBackgroundFallback(drawable != null ? 0 : mBackgroundFallbackResource);
            }
        }
    }

    @Override
    public final void setFeatureDrawableResource(int featureId, int resId) {
        if (resId != 0) {
            DrawableFeatureState st = getDrawableState(featureId, true);
            if (st.resid != resId) {
                st.resid = resId;
                st.uri = null;
                st.local = getContext().getDrawable(resId);
                updateDrawable(featureId, st, false);
            }
        } else {
            setFeatureDrawable(featureId, null);
        }
    }

    @Override
    public final void setFeatureDrawableUri(int featureId, Uri uri) {
        if (uri != null) {
            DrawableFeatureState st = getDrawableState(featureId, true);
            if (st.uri == null || !st.uri.equals(uri)) {
                st.resid = 0;
                st.uri = uri;
                st.local = loadImageURI(uri);
                updateDrawable(featureId, st, false);
            }
        } else {
            setFeatureDrawable(featureId, null);
        }
    }

    @Override
    public final void setFeatureDrawable(int featureId, Drawable drawable) {
        DrawableFeatureState st = getDrawableState(featureId, true);
        st.resid = 0;
        st.uri = null;
        if (st.local != drawable) {
            st.local = drawable;
            updateDrawable(featureId, st, false);
        }
    }

    @Override
    public void setFeatureDrawableAlpha(int featureId, int alpha) {
        DrawableFeatureState st = getDrawableState(featureId, true);
        if (st.alpha != alpha) {
            st.alpha = alpha;
            updateDrawable(featureId, st, false);
        }
    }

    protected final void setFeatureDefaultDrawable(int featureId, Drawable drawable) {
        DrawableFeatureState st = getDrawableState(featureId, true);
        if (st.def != drawable) {
            st.def = drawable;
            updateDrawable(featureId, st, false);
        }
    }

    @Override
    public final void setFeatureInt(int featureId, int value) {
        // XXX Should do more management (as with drawable features) to
        // deal with interactions between multiple window policies.
        updateInt(featureId, value, false);
    }

    /**
     * Update the state of a drawable feature. This should be called, for every
     * drawable feature supported, as part of onActive(), to make sure that the
     * contents of a containing window is properly updated.
     *
     * @see #onActive
     * @param featureId The desired drawable feature to change.
     * @param fromActive Always true when called from onActive().
     */
    protected final void updateDrawable(int featureId, boolean fromActive) {
        final DrawableFeatureState st = getDrawableState(featureId, false);
        if (st != null) {
            updateDrawable(featureId, st, fromActive);
        }
    }

    /**
     * Called when a Drawable feature changes, for the window to update its
     * graphics.
     *
     * @param featureId The feature being changed.
     * @param drawable The new Drawable to show, or null if none.
     * @param alpha The new alpha blending of the Drawable.
     */
    protected void onDrawableChanged(int featureId, Drawable drawable, int alpha) {
        ImageView view;
        if (featureId == FEATURE_LEFT_ICON) {
            view = getLeftIconView();
        } else if (featureId == FEATURE_RIGHT_ICON) {
            view = getRightIconView();
        } else {
            return;
        }

        if (drawable != null) {
            drawable.setAlpha(alpha);
            view.setImageDrawable(drawable);
            view.setVisibility(View.VISIBLE);
        } else {
            view.setVisibility(View.GONE);
        }
    }

    /**
     * Called when an int feature changes, for the window to update its
     * graphics.
     *
     * @param featureId The feature being changed.
     * @param value The new integer value.
     */
    protected void onIntChanged(int featureId, int value) {
        if (featureId == FEATURE_PROGRESS || featureId == FEATURE_INDETERMINATE_PROGRESS) {
            updateProgressBars(value);
        } else if (featureId == FEATURE_CUSTOM_TITLE) {
            FrameLayout titleContainer = (FrameLayout) findViewById(R.id.title_container);
            if (titleContainer != null) {
                mLayoutInflater.inflate(value, titleContainer);
            }
        }
    }

    /**
     * Updates the progress bars that are shown in the title bar.
     *
     * @param value Can be one of {@link Window#PROGRESS_VISIBILITY_ON},
     *            {@link Window#PROGRESS_VISIBILITY_OFF},
     *            {@link Window#PROGRESS_INDETERMINATE_ON},
     *            {@link Window#PROGRESS_INDETERMINATE_OFF}, or a value
     *            starting at {@link Window#PROGRESS_START} through
     *            {@link Window#PROGRESS_END} for setting the default
     *            progress (if {@link Window#PROGRESS_END} is given,
     *            the progress bar widgets in the title will be hidden after an
     *            animation), a value between
     *            {@link Window#PROGRESS_SECONDARY_START} -
     *            {@link Window#PROGRESS_SECONDARY_END} for the
     *            secondary progress (if
     *            {@link Window#PROGRESS_SECONDARY_END} is given, the
     *            progress bar widgets will still be shown with the secondary
     *            progress bar will be completely filled in.)
     */
    private void updateProgressBars(int value) {
        ProgressBar circularProgressBar = getCircularProgressBar(true);
        ProgressBar horizontalProgressBar = getHorizontalProgressBar(true);

        final int features = getLocalFeatures();
        if (value == PROGRESS_VISIBILITY_ON) {
            if ((features & (1 << FEATURE_PROGRESS)) != 0) {
                if (horizontalProgressBar != null) {
                    int level = horizontalProgressBar.getProgress();
                    int visibility = (horizontalProgressBar.isIndeterminate() || level < 10000) ?
                            View.VISIBLE : View.INVISIBLE;
                    horizontalProgressBar.setVisibility(visibility);
                } else {
                    Log.e(TAG, "Horizontal progress bar not located in current window decor");
                }
            }
            if ((features & (1 << FEATURE_INDETERMINATE_PROGRESS)) != 0) {
                if (circularProgressBar != null) {
                    circularProgressBar.setVisibility(View.VISIBLE);
                } else {
                    Log.e(TAG, "Circular progress bar not located in current window decor");
                }
            }
        } else if (value == PROGRESS_VISIBILITY_OFF) {
            if ((features & (1 << FEATURE_PROGRESS)) != 0) {
                if (horizontalProgressBar != null) {
                    horizontalProgressBar.setVisibility(View.GONE);
                } else {
                    Log.e(TAG, "Horizontal progress bar not located in current window decor");
                }
            }
            if ((features & (1 << FEATURE_INDETERMINATE_PROGRESS)) != 0) {
                if (circularProgressBar != null) {
                    circularProgressBar.setVisibility(View.GONE);
                } else {
                    Log.e(TAG, "Circular progress bar not located in current window decor");
                }
            }
        } else if (value == PROGRESS_INDETERMINATE_ON) {
            if (horizontalProgressBar != null) {
                horizontalProgressBar.setIndeterminate(true);
            } else {
                Log.e(TAG, "Horizontal progress bar not located in current window decor");
            }
        } else if (value == PROGRESS_INDETERMINATE_OFF) {
            if (horizontalProgressBar != null) {
                horizontalProgressBar.setIndeterminate(false);
            } else {
                Log.e(TAG, "Horizontal progress bar not located in current window decor");
            }
        } else if (PROGRESS_START <= value && value <= PROGRESS_END) {
            // We want to set the progress value before testing for visibility
            // so that when the progress bar becomes visible again, it has the
            // correct level.
            if (horizontalProgressBar != null) {
                horizontalProgressBar.setProgress(value - PROGRESS_START);
            } else {
                Log.e(TAG, "Horizontal progress bar not located in current window decor");
            }

            if (value < PROGRESS_END) {
                showProgressBars(horizontalProgressBar, circularProgressBar);
            } else {
                hideProgressBars(horizontalProgressBar, circularProgressBar);
            }
        } else if (PROGRESS_SECONDARY_START <= value && value <= PROGRESS_SECONDARY_END) {
            if (horizontalProgressBar != null) {
                horizontalProgressBar.setSecondaryProgress(value - PROGRESS_SECONDARY_START);
            } else {
                Log.e(TAG, "Horizontal progress bar not located in current window decor");
            }

            showProgressBars(horizontalProgressBar, circularProgressBar);
        }

    }

    private void showProgressBars(ProgressBar horizontalProgressBar, ProgressBar spinnyProgressBar) {
        final int features = getLocalFeatures();
        if ((features & (1 << FEATURE_INDETERMINATE_PROGRESS)) != 0 &&
                spinnyProgressBar != null && spinnyProgressBar.getVisibility() == View.INVISIBLE) {
            spinnyProgressBar.setVisibility(View.VISIBLE);
        }
        // Only show the progress bars if the primary progress is not complete
        if ((features & (1 << FEATURE_PROGRESS)) != 0 && horizontalProgressBar != null &&
                horizontalProgressBar.getProgress() < 10000) {
            horizontalProgressBar.setVisibility(View.VISIBLE);
        }
    }

    private void hideProgressBars(ProgressBar horizontalProgressBar, ProgressBar spinnyProgressBar) {
        final int features = getLocalFeatures();
        Animation anim = AnimationUtils.loadAnimation(getContext(), R.anim.fade_out);
        anim.setDuration(1000);
        if ((features & (1 << FEATURE_INDETERMINATE_PROGRESS)) != 0 &&
                spinnyProgressBar != null &&
                spinnyProgressBar.getVisibility() == View.VISIBLE) {
            spinnyProgressBar.startAnimation(anim);
            spinnyProgressBar.setVisibility(View.INVISIBLE);
        }
        if ((features & (1 << FEATURE_PROGRESS)) != 0 && horizontalProgressBar != null &&
                horizontalProgressBar.getVisibility() == View.VISIBLE) {
            horizontalProgressBar.startAnimation(anim);
            horizontalProgressBar.setVisibility(View.INVISIBLE);
        }
    }

    @Override
    public void setIcon(int resId) {
        mIconRes = resId;
        mResourcesSetFlags |= FLAG_RESOURCE_SET_ICON;
        mResourcesSetFlags &= ~FLAG_RESOURCE_SET_ICON_FALLBACK;
        if (mDecorContentParent != null) {
            mDecorContentParent.setIcon(resId);
        }
    }

    @Override
    public void setDefaultIcon(int resId) {
        if ((mResourcesSetFlags & FLAG_RESOURCE_SET_ICON) != 0) {
            return;
        }
        mIconRes = resId;
        if (mDecorContentParent != null && (!mDecorContentParent.hasIcon() ||
                (mResourcesSetFlags & FLAG_RESOURCE_SET_ICON_FALLBACK) != 0)) {
            if (resId != 0) {
                mDecorContentParent.setIcon(resId);
                mResourcesSetFlags &= ~FLAG_RESOURCE_SET_ICON_FALLBACK;
            } else {
                mDecorContentParent.setIcon(
                        getContext().getPackageManager().getDefaultActivityIcon());
                mResourcesSetFlags |= FLAG_RESOURCE_SET_ICON_FALLBACK;
            }
        }
    }

    @Override
    public void setLogo(int resId) {
        mLogoRes = resId;
        mResourcesSetFlags |= FLAG_RESOURCE_SET_LOGO;
        if (mDecorContentParent != null) {
            mDecorContentParent.setLogo(resId);
        }
    }

    @Override
    public void setDefaultLogo(int resId) {
        if ((mResourcesSetFlags & FLAG_RESOURCE_SET_LOGO) != 0) {
            return;
        }
        mLogoRes = resId;
        if (mDecorContentParent != null && !mDecorContentParent.hasLogo()) {
            mDecorContentParent.setLogo(resId);
        }
    }

    @Override
    public void setLocalFocus(boolean hasFocus, boolean inTouchMode) {
        getViewRootImpl().windowFocusChanged(hasFocus, inTouchMode);

    }

    @Override
    public void injectInputEvent(InputEvent event) {
        getViewRootImpl().dispatchInputEvent(event);
    }

    private ViewRootImpl getViewRootImpl() {
        if (mDecor != null) {
            ViewRootImpl viewRootImpl = mDecor.getViewRootImpl();
            if (viewRootImpl != null) {
                return viewRootImpl;
            }
        }
        throw new IllegalStateException("view not added");
    }

    /**
     * Request that key events come to this activity. Use this if your activity
     * has no views with focus, but the activity still wants a chance to process
     * key events.
     */
    @Override
    public void takeKeyEvents(boolean get) {
        mDecor.setFocusable(get);
    }

    @Override
    public boolean superDispatchKeyEvent(KeyEvent event) {
        return mDecor.superDispatchKeyEvent(event);
    }

    @Override
    public boolean superDispatchKeyShortcutEvent(KeyEvent event) {
        return mDecor.superDispatchKeyShortcutEvent(event);
    }

    @Override
    public boolean superDispatchTouchEvent(MotionEvent event) {
        return mDecor.superDispatchTouchEvent(event);
    }

    @Override
    public boolean superDispatchTrackballEvent(MotionEvent event) {
        return mDecor.superDispatchTrackballEvent(event);
    }

    @Override
    public boolean superDispatchGenericMotionEvent(MotionEvent event) {
        return mDecor.superDispatchGenericMotionEvent(event);
    }

    /**
     * A key was pressed down and not handled by anything else in the window.
     *
     * @see #onKeyUp
     * @see android.view.KeyEvent
     */
    protected boolean onKeyDown(int featureId, int keyCode, KeyEvent event) {
        /* ****************************************************************************
         * HOW TO DECIDE WHERE YOUR KEY HANDLING GOES.
         *
         * If your key handling must happen before the app gets a crack at the event,
         * it goes in PhoneWindowManager.
         *
         * If your key handling should happen in all windows, and does not depend on
         * the state of the current application, other than that the current
         * application can override the behavior by handling the event itself, it
         * should go in PhoneFallbackEventHandler.
         *
         * Only if your handling depends on the window, and the fact that it has
         * a DecorView, should it go here.
         * ****************************************************************************/

        final KeyEvent.DispatcherState dispatcher =
                mDecor != null ? mDecor.getKeyDispatcherState() : null;
        //Log.i(TAG, "Key down: repeat=" + event.getRepeatCount()
        //        + " flags=0x" + Integer.toHexString(event.getFlags()));

        switch (keyCode) {
            case KeyEvent.KEYCODE_VOLUME_UP:
            case KeyEvent.KEYCODE_VOLUME_DOWN:
            case KeyEvent.KEYCODE_VOLUME_MUTE: {
                int direction = 0;
                switch (keyCode) {
                    case KeyEvent.KEYCODE_VOLUME_UP:
                        direction = AudioManager.ADJUST_RAISE;
                        break;
                    case KeyEvent.KEYCODE_VOLUME_DOWN:
                        direction = AudioManager.ADJUST_LOWER;
                        break;
                    case KeyEvent.KEYCODE_VOLUME_MUTE:
                        direction = AudioManager.ADJUST_TOGGLE_MUTE;
                        break;
                }
                // If we have a session send it the volume command, otherwise
                // use the suggested stream.
                if (mMediaController != null) {
                    mMediaController.adjustVolume(direction, AudioManager.FLAG_SHOW_UI);
                } else {
                    MediaSessionLegacyHelper.getHelper(getContext()).sendAdjustVolumeBy(
                            mVolumeControlStreamType, direction,
                            AudioManager.FLAG_SHOW_UI | AudioManager.FLAG_VIBRATE
                                    | AudioManager.FLAG_FROM_KEY);
                }
                return true;
            }
            // These are all the recognized media key codes in
            // KeyEvent.isMediaKey()
            case KeyEvent.KEYCODE_MEDIA_PLAY:
            case KeyEvent.KEYCODE_MEDIA_PAUSE:
            case KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE:
            case KeyEvent.KEYCODE_MUTE:
            case KeyEvent.KEYCODE_HEADSETHOOK:
            case KeyEvent.KEYCODE_MEDIA_STOP:
            case KeyEvent.KEYCODE_MEDIA_NEXT:
            case KeyEvent.KEYCODE_MEDIA_PREVIOUS:
            case KeyEvent.KEYCODE_MEDIA_REWIND:
            case KeyEvent.KEYCODE_MEDIA_RECORD:
            case KeyEvent.KEYCODE_MEDIA_FAST_FORWARD: {
                if (mMediaController != null) {
                    if (mMediaController.dispatchMediaButtonEvent(event)) {
                        return true;
                    }
                }
                return false;
            }

            case KeyEvent.KEYCODE_MENU: {
                onKeyDownPanel((featureId < 0) ? FEATURE_OPTIONS_PANEL : featureId, event);
                return true;
            }

            case KeyEvent.KEYCODE_BACK: {
                if (event.getRepeatCount() > 0) break;
                if (featureId < 0) break;
                // Currently don't do anything with long press.
                if (dispatcher != null) {
                    dispatcher.startTracking(event, this);
                }
                return true;
            }

        }

        return false;
    }

    private KeyguardManager getKeyguardManager() {
        if (mKeyguardManager == null) {
            mKeyguardManager = (KeyguardManager) getContext().getSystemService(
                    Context.KEYGUARD_SERVICE);
        }
        return mKeyguardManager;
    }

    AudioManager getAudioManager() {
        if (mAudioManager == null) {
            mAudioManager = (AudioManager)getContext().getSystemService(Context.AUDIO_SERVICE);
        }
        return mAudioManager;
    }

    /**
     * A key was released and not handled by anything else in the window.
     *
     * @see #onKeyDown
     * @see android.view.KeyEvent
     */
    protected boolean onKeyUp(int featureId, int keyCode, KeyEvent event) {
        final KeyEvent.DispatcherState dispatcher =
                mDecor != null ? mDecor.getKeyDispatcherState() : null;
        if (dispatcher != null) {
            dispatcher.handleUpEvent(event);
        }
        //Log.i(TAG, "Key up: repeat=" + event.getRepeatCount()
        //        + " flags=0x" + Integer.toHexString(event.getFlags()));

        switch (keyCode) {
            case KeyEvent.KEYCODE_VOLUME_UP:
            case KeyEvent.KEYCODE_VOLUME_DOWN: {
                final int flags = AudioManager.FLAG_PLAY_SOUND | AudioManager.FLAG_VIBRATE
                        | AudioManager.FLAG_FROM_KEY;
                // If we have a session send it the volume command, otherwise
                // use the suggested stream.
                if (mMediaController != null) {
                    mMediaController.adjustVolume(0, flags);
                } else {
                    MediaSessionLegacyHelper.getHelper(getContext()).sendAdjustVolumeBy(
                            mVolumeControlStreamType, 0, flags);
                }
                return true;
            }
            case KeyEvent.KEYCODE_VOLUME_MUTE: {
                // Similar code is in PhoneFallbackEventHandler in case the window
                // doesn't have one of these.  In this case, we execute it here and
                // eat the event instead, because we have mVolumeControlStreamType
                // and they don't.
                getAudioManager().handleKeyUp(event, mVolumeControlStreamType);
                return true;
            }
            // These are all the recognized media key codes in
            // KeyEvent.isMediaKey()
            case KeyEvent.KEYCODE_MEDIA_PLAY:
            case KeyEvent.KEYCODE_MEDIA_PAUSE:
            case KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE:
            case KeyEvent.KEYCODE_MUTE:
            case KeyEvent.KEYCODE_HEADSETHOOK:
            case KeyEvent.KEYCODE_MEDIA_STOP:
            case KeyEvent.KEYCODE_MEDIA_NEXT:
            case KeyEvent.KEYCODE_MEDIA_PREVIOUS:
            case KeyEvent.KEYCODE_MEDIA_REWIND:
            case KeyEvent.KEYCODE_MEDIA_RECORD:
            case KeyEvent.KEYCODE_MEDIA_FAST_FORWARD: {
                if (mMediaController != null) {
                    if (mMediaController.dispatchMediaButtonEvent(event)) {
                        return true;
                    }
                }
                return false;
            }

            case KeyEvent.KEYCODE_MENU: {
                onKeyUpPanel(featureId < 0 ? FEATURE_OPTIONS_PANEL : featureId,
                        event);
                return true;
            }

            case KeyEvent.KEYCODE_BACK: {
                if (featureId < 0) break;
                if (event.isTracking() && !event.isCanceled()) {
                    if (featureId == FEATURE_OPTIONS_PANEL) {
                        PanelFeatureState st = getPanelState(featureId, false);
                        if (st != null && st.isInExpandedMode) {
                            // If the user is in an expanded menu and hits back, it
                            // should go back to the icon menu
                            reopenMenu(true);
                            return true;
                        }
                    }
                    closePanel(featureId);
                    return true;
                }
                break;
            }

            case KeyEvent.KEYCODE_SEARCH: {
                /*
                 * Do this in onKeyUp since the Search key is also used for
                 * chording quick launch shortcuts.
                 */
                if (getKeyguardManager().inKeyguardRestrictedInputMode()) {
                    break;
                }
                if (event.isTracking() && !event.isCanceled()) {
                    launchDefaultSearch(event);
                }
                return true;
            }
        }

        return false;
    }

    @Override
    protected void onActive() {
    }

    @Override
    public final View getDecorView() {
        if (mDecor == null) {
            installDecor();
        }
        return mDecor;
    }

    @Override
    public final View peekDecorView() {
        return mDecor;
    }

    static private final String FOCUSED_ID_TAG = "android:focusedViewId";
    static private final String VIEWS_TAG = "android:views";
    static private final String PANELS_TAG = "android:Panels";
    static private final String ACTION_BAR_TAG = "android:ActionBar";

    /** {@inheritDoc} */
    @Override
    public Bundle saveHierarchyState() {
        Bundle outState = new Bundle();
        if (mContentParent == null) {
            return outState;
        }

        SparseArray<Parcelable> states = new SparseArray<Parcelable>();
        mContentParent.saveHierarchyState(states);
        outState.putSparseParcelableArray(VIEWS_TAG, states);

        // save the focused view id
        View focusedView = mContentParent.findFocus();
        if (focusedView != null) {
            if (focusedView.getId() != View.NO_ID) {
                outState.putInt(FOCUSED_ID_TAG, focusedView.getId());
            } else {
                if (false) {
                    Log.d(TAG, "couldn't save which view has focus because the focused view "
                            + focusedView + " has no id.");
                }
            }
        }

        // save the panels
        SparseArray<Parcelable> panelStates = new SparseArray<Parcelable>();
        savePanelState(panelStates);
        if (panelStates.size() > 0) {
            outState.putSparseParcelableArray(PANELS_TAG, panelStates);
        }

        if (mDecorContentParent != null) {
            SparseArray<Parcelable> actionBarStates = new SparseArray<Parcelable>();
            mDecorContentParent.saveToolbarHierarchyState(actionBarStates);
            outState.putSparseParcelableArray(ACTION_BAR_TAG, actionBarStates);
        }

        return outState;
    }

    /** {@inheritDoc} */
    @Override
    public void restoreHierarchyState(Bundle savedInstanceState) {
        if (mContentParent == null) {
            return;
        }

        SparseArray<Parcelable> savedStates
                = savedInstanceState.getSparseParcelableArray(VIEWS_TAG);
        if (savedStates != null) {
            mContentParent.restoreHierarchyState(savedStates);
        }

        // restore the focused view
        int focusedViewId = savedInstanceState.getInt(FOCUSED_ID_TAG, View.NO_ID);
        if (focusedViewId != View.NO_ID) {
            View needsFocus = mContentParent.findViewById(focusedViewId);
            if (needsFocus != null) {
                needsFocus.requestFocus();
            } else {
                Log.w(TAG,
                        "Previously focused view reported id " + focusedViewId
                                + " during save, but can't be found during restore.");
            }
        }

        // restore the panels
        SparseArray<Parcelable> panelStates = savedInstanceState.getSparseParcelableArray(PANELS_TAG);
        if (panelStates != null) {
            restorePanelState(panelStates);
        }

        if (mDecorContentParent != null) {
            SparseArray<Parcelable> actionBarStates =
                    savedInstanceState.getSparseParcelableArray(ACTION_BAR_TAG);
            if (actionBarStates != null) {
                doPendingInvalidatePanelMenu();
                mDecorContentParent.restoreToolbarHierarchyState(actionBarStates);
            } else {
                Log.w(TAG, "Missing saved instance states for action bar views! " +
                        "State will not be restored.");
            }
        }
    }

    /**
     * Invoked when the panels should freeze their state.
     *
     * @param icicles Save state into this. This is usually indexed by the
     *            featureId. This will be given to {@link #restorePanelState} in the
     *            future.
     */
    private void savePanelState(SparseArray<Parcelable> icicles) {
        PanelFeatureState[] panels = mPanels;
        if (panels == null) {
            return;
        }

        for (int curFeatureId = panels.length - 1; curFeatureId >= 0; curFeatureId--) {
            if (panels[curFeatureId] != null) {
                icicles.put(curFeatureId, panels[curFeatureId].onSaveInstanceState());
            }
        }
    }

    /**
     * Invoked when the panels should thaw their state from a previously frozen state.
     *
     * @param icicles The state saved by {@link #savePanelState} that needs to be thawed.
     */
    private void restorePanelState(SparseArray<Parcelable> icicles) {
        PanelFeatureState st;
        int curFeatureId;
        for (int i = icicles.size() - 1; i >= 0; i--) {
            curFeatureId = icicles.keyAt(i);
            st = getPanelState(curFeatureId, false /* required */);
            if (st == null) {
                // The panel must not have been required, and is currently not around, skip it
                continue;
            }

            st.onRestoreInstanceState(icicles.get(curFeatureId));
            invalidatePanelMenu(curFeatureId);
        }

        /*
         * Implementation note: call openPanelsAfterRestore later to actually open the
         * restored panels.
         */
    }

    /**
     * Opens the panels that have had their state restored. This should be
     * called sometime after {@link #restorePanelState} when it is safe to add
     * to the window manager.
     */
    private void openPanelsAfterRestore() {
        PanelFeatureState[] panels = mPanels;

        if (panels == null) {
            return;
        }

        PanelFeatureState st;
        for (int i = panels.length - 1; i >= 0; i--) {
            st = panels[i];
            // We restore the panel if it was last open; we skip it if it
            // now is open, to avoid a race condition if the user immediately
            // opens it when we are resuming.
            if (st != null) {
                st.applyFrozenState();
                if (!st.isOpen && st.wasLastOpen) {
                    st.isInExpandedMode = st.wasLastExpanded;
                    openPanel(st, null);
                }
            }
        }
    }

    private class PanelMenuPresenterCallback implements MenuPresenter.Callback {
        @Override
        public void onCloseMenu(MenuBuilder menu, boolean allMenusAreClosing) {
            final Menu parentMenu = menu.getRootMenu();
            final boolean isSubMenu = parentMenu != menu;
            final PanelFeatureState panel = findMenuPanel(isSubMenu ? parentMenu : menu);
            if (panel != null) {
                if (isSubMenu) {
                    callOnPanelClosed(panel.featureId, panel, parentMenu);
                    closePanel(panel, true);
                } else {
                    // Close the panel and only do the callback if the menu is being
                    // closed completely, not if opening a sub menu
                    closePanel(panel, allMenusAreClosing);
                }
            }
        }

        @Override
        public boolean onOpenSubMenu(MenuBuilder subMenu) {
            if (subMenu == null && hasFeature(FEATURE_ACTION_BAR)) {
                Callback cb = getCallback();
                if (cb != null && !isDestroyed()) {
                    cb.onMenuOpened(FEATURE_ACTION_BAR, subMenu);
                }
            }

            return true;
        }
    }

    private final class ActionMenuPresenterCallback implements MenuPresenter.Callback {
        @Override
        public boolean onOpenSubMenu(MenuBuilder subMenu) {
            Callback cb = getCallback();
            if (cb != null) {
                cb.onMenuOpened(FEATURE_ACTION_BAR, subMenu);
                return true;
            }
            return false;
        }

        @Override
        public void onCloseMenu(MenuBuilder menu, boolean allMenusAreClosing) {
            checkCloseActionMenu(menu);
        }
    }

    private final class DecorView extends FrameLayout implements RootViewSurfaceTaker {

        /* package */int mDefaultOpacity = PixelFormat.OPAQUE;

        /** The feature ID of the panel, or -1 if this is the application's DecorView */
        private final int mFeatureId;

        private final Rect mDrawingBounds = new Rect();

        private final Rect mBackgroundPadding = new Rect();

        private final Rect mFramePadding = new Rect();

        private final Rect mFrameOffsets = new Rect();

        private boolean mChanging;

        private Drawable mMenuBackground;
        private boolean mWatchingForMenu;
        private int mDownY;

        private ActionMode mPrimaryActionMode;
        private ActionMode mFloatingActionMode;
        private ActionBarContextView mPrimaryActionModeView;
        private PopupWindow mPrimaryActionModePopup;
        private Runnable mShowPrimaryActionModePopup;
        private OnPreDrawListener mFloatingToolbarPreDrawListener;
        private View mFloatingActionModeOriginatingView;
        private FloatingToolbar mFloatingToolbar;
        private ObjectAnimator mFadeAnim;

        // View added at runtime to draw under the status bar area
        private View mStatusGuard;
        // View added at runtime to draw under the navigation bar area
        private View mNavigationGuard;

        private final ColorViewState mStatusColorViewState = new ColorViewState(
                SYSTEM_UI_FLAG_FULLSCREEN, FLAG_TRANSLUCENT_STATUS,
                Gravity.TOP,
                Gravity.LEFT,
                STATUS_BAR_BACKGROUND_TRANSITION_NAME,
                com.android.internal.R.id.statusBarBackground,
                FLAG_FULLSCREEN);
        private final ColorViewState mNavigationColorViewState = new ColorViewState(
                SYSTEM_UI_FLAG_HIDE_NAVIGATION, FLAG_TRANSLUCENT_NAVIGATION,
                Gravity.BOTTOM,
                Gravity.RIGHT,
                NAVIGATION_BAR_BACKGROUND_TRANSITION_NAME,
                com.android.internal.R.id.navigationBarBackground,
                0 /* hideWindowFlag */);

        private final Interpolator mShowInterpolator;
        private final Interpolator mHideInterpolator;
        private final int mBarEnterExitDuration;

        private final BackgroundFallback mBackgroundFallback = new BackgroundFallback();

        private int mLastTopInset = 0;
        private int mLastBottomInset = 0;
        private int mLastRightInset = 0;
        private boolean mLastHasTopStableInset = false;
        private boolean mLastHasBottomStableInset = false;
        private boolean mLastHasRightStableInset = false;
        private int mLastWindowFlags = 0;

        private int mRootScrollY = 0;

        public DecorView(Context context, int featureId) {
            super(context);
            mFeatureId = featureId;

            mShowInterpolator = AnimationUtils.loadInterpolator(context,
                    android.R.interpolator.linear_out_slow_in);
            mHideInterpolator = AnimationUtils.loadInterpolator(context,
                    android.R.interpolator.fast_out_linear_in);

            mBarEnterExitDuration = context.getResources().getInteger(
                    R.integer.dock_enter_exit_duration);
        }

        public void setBackgroundFallback(int resId) {
            mBackgroundFallback.setDrawable(resId != 0 ? getContext().getDrawable(resId) : null);
            setWillNotDraw(getBackground() == null && !mBackgroundFallback.hasFallback());
        }

        @Override
        public void onDraw(Canvas c) {
            super.onDraw(c);
            mBackgroundFallback.draw(mContentRoot, c, mContentParent);
        }

        @Override
        public boolean dispatchKeyEvent(KeyEvent event) {
            final int keyCode = event.getKeyCode();
            final int action = event.getAction();
            final boolean isDown = action == KeyEvent.ACTION_DOWN;

            if (isDown && (event.getRepeatCount() == 0)) {
                // First handle chording of panel key: if a panel key is held
                // but not released, try to execute a shortcut in it.
                if ((mPanelChordingKey > 0) && (mPanelChordingKey != keyCode)) {
                    boolean handled = dispatchKeyShortcutEvent(event);
                    if (handled) {
                        return true;
                    }
                }

                // If a panel is open, perform a shortcut on it without the
                // chorded panel key
                if ((mPreparedPanel != null) && mPreparedPanel.isOpen) {
                    if (performPanelShortcut(mPreparedPanel, keyCode, event, 0)) {
                        return true;
                    }
                }
            }

            if (!isDestroyed()) {
                final Callback cb = getCallback();
                final boolean handled = cb != null && mFeatureId < 0 ? cb.dispatchKeyEvent(event)
                        : super.dispatchKeyEvent(event);
                if (handled) {
                    return true;
                }
            }

            return isDown ? PhoneWindow.this.onKeyDown(mFeatureId, event.getKeyCode(), event)
                    : PhoneWindow.this.onKeyUp(mFeatureId, event.getKeyCode(), event);
        }

        @Override
        public boolean dispatchKeyShortcutEvent(KeyEvent ev) {
            // If the panel is already prepared, then perform the shortcut using it.
            boolean handled;
            if (mPreparedPanel != null) {
                handled = performPanelShortcut(mPreparedPanel, ev.getKeyCode(), ev,
                        Menu.FLAG_PERFORM_NO_CLOSE);
                if (handled) {
                    if (mPreparedPanel != null) {
                        mPreparedPanel.isHandled = true;
                    }
                    return true;
                }
            }

            // Shortcut not handled by the panel.  Dispatch to the view hierarchy.
            final Callback cb = getCallback();
            handled = cb != null && !isDestroyed() && mFeatureId < 0
                    ? cb.dispatchKeyShortcutEvent(ev) : super.dispatchKeyShortcutEvent(ev);
            if (handled) {
                return true;
            }

            // If the panel is not prepared, then we may be trying to handle a shortcut key
            // combination such as Control+C.  Temporarily prepare the panel then mark it
            // unprepared again when finished to ensure that the panel will again be prepared
            // the next time it is shown for real.
            PanelFeatureState st = getPanelState(FEATURE_OPTIONS_PANEL, false);
            if (st != null && mPreparedPanel == null) {
                preparePanel(st, ev);
                handled = performPanelShortcut(st, ev.getKeyCode(), ev,
                        Menu.FLAG_PERFORM_NO_CLOSE);
                st.isPrepared = false;
                if (handled) {
                    return true;
                }
            }
            return false;
        }

        @Override
        public boolean dispatchTouchEvent(MotionEvent ev) {
            final Callback cb = getCallback();
            return cb != null && !isDestroyed() && mFeatureId < 0 ? cb.dispatchTouchEvent(ev)
                    : super.dispatchTouchEvent(ev);
        }

        @Override
        public boolean dispatchTrackballEvent(MotionEvent ev) {
            final Callback cb = getCallback();
            return cb != null && !isDestroyed() && mFeatureId < 0 ? cb.dispatchTrackballEvent(ev)
                    : super.dispatchTrackballEvent(ev);
        }

        @Override
        public boolean dispatchGenericMotionEvent(MotionEvent ev) {
            final Callback cb = getCallback();
            return cb != null && !isDestroyed() && mFeatureId < 0 ? cb.dispatchGenericMotionEvent(ev)
                    : super.dispatchGenericMotionEvent(ev);
        }

        public boolean superDispatchKeyEvent(KeyEvent event) {
            // Give priority to closing action modes if applicable.
            if (event.getKeyCode() == KeyEvent.KEYCODE_BACK) {
                final int action = event.getAction();
                // Back cancels action modes first.
                if (mPrimaryActionMode != null) {
                    if (action == KeyEvent.ACTION_UP) {
                        mPrimaryActionMode.finish();
                    }
                    return true;
                }
            }

            return super.dispatchKeyEvent(event);
        }

        public boolean superDispatchKeyShortcutEvent(KeyEvent event) {
            return super.dispatchKeyShortcutEvent(event);
        }

        public boolean superDispatchTouchEvent(MotionEvent event) {
            return super.dispatchTouchEvent(event);
        }

        public boolean superDispatchTrackballEvent(MotionEvent event) {
            return super.dispatchTrackballEvent(event);
        }

        public boolean superDispatchGenericMotionEvent(MotionEvent event) {
            return super.dispatchGenericMotionEvent(event);
        }

        @Override
        public boolean onTouchEvent(MotionEvent event) {
            return onInterceptTouchEvent(event);
        }

        private boolean isOutOfBounds(int x, int y) {
            return x < -5 || y < -5 || x > (getWidth() + 5)
                    || y > (getHeight() + 5);
        }

        @Override
        public boolean onInterceptTouchEvent(MotionEvent event) {
            int action = event.getAction();
            if (mFeatureId >= 0) {
                if (action == MotionEvent.ACTION_DOWN) {
                    int x = (int)event.getX();
                    int y = (int)event.getY();
                    if (isOutOfBounds(x, y)) {
                        closePanel(mFeatureId);
                        return true;
                    }
                }
            }

            if (!SWEEP_OPEN_MENU) {
                return false;
            }

            if (mFeatureId >= 0) {
                if (action == MotionEvent.ACTION_DOWN) {
                    Log.i(TAG, "Watchiing!");
                    mWatchingForMenu = true;
                    mDownY = (int) event.getY();
                    return false;
                }

                if (!mWatchingForMenu) {
                    return false;
                }

                int y = (int)event.getY();
                if (action == MotionEvent.ACTION_MOVE) {
                    if (y > (mDownY+30)) {
                        Log.i(TAG, "Closing!");
                        closePanel(mFeatureId);
                        mWatchingForMenu = false;
                        return true;
                    }
                } else if (action == MotionEvent.ACTION_UP) {
                    mWatchingForMenu = false;
                }

                return false;
            }

            //Log.i(TAG, "Intercept: action=" + action + " y=" + event.getY()
            //        + " (in " + getHeight() + ")");

            if (action == MotionEvent.ACTION_DOWN) {
                int y = (int)event.getY();
                if (y >= (getHeight()-5) && !hasChildren()) {
                    Log.i(TAG, "Watchiing!");
                    mWatchingForMenu = true;
                }
                return false;
            }

            if (!mWatchingForMenu) {
                return false;
            }

            int y = (int)event.getY();
            if (action == MotionEvent.ACTION_MOVE) {
                if (y < (getHeight()-30)) {
                    Log.i(TAG, "Opening!");
                    openPanel(FEATURE_OPTIONS_PANEL, new KeyEvent(
                            KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_MENU));
                    mWatchingForMenu = false;
                    return true;
                }
            } else if (action == MotionEvent.ACTION_UP) {
                mWatchingForMenu = false;
            }

            return false;
        }

        @Override
        public void sendAccessibilityEvent(int eventType) {
            if (!AccessibilityManager.getInstance(mContext).isEnabled()) {
                return;
            }

            // if we are showing a feature that should be announced and one child
            // make this child the event source since this is the feature itself
            // otherwise the callback will take over and announce its client
            if ((mFeatureId == FEATURE_OPTIONS_PANEL ||
                    mFeatureId == FEATURE_CONTEXT_MENU ||
                    mFeatureId == FEATURE_PROGRESS ||
                    mFeatureId == FEATURE_INDETERMINATE_PROGRESS)
                    && getChildCount() == 1) {
                getChildAt(0).sendAccessibilityEvent(eventType);
            } else {
                super.sendAccessibilityEvent(eventType);
            }
        }

        @Override
        public boolean dispatchPopulateAccessibilityEventInternal(AccessibilityEvent event) {
            final Callback cb = getCallback();
            if (cb != null && !isDestroyed()) {
                if (cb.dispatchPopulateAccessibilityEvent(event)) {
                    return true;
                }
            }
            return super.dispatchPopulateAccessibilityEventInternal(event);
        }

        @Override
        protected boolean setFrame(int l, int t, int r, int b) {
            boolean changed = super.setFrame(l, t, r, b);
            if (changed) {
                final Rect drawingBounds = mDrawingBounds;
                getDrawingRect(drawingBounds);

                Drawable fg = getForeground();
                if (fg != null) {
                    final Rect frameOffsets = mFrameOffsets;
                    drawingBounds.left += frameOffsets.left;
                    drawingBounds.top += frameOffsets.top;
                    drawingBounds.right -= frameOffsets.right;
                    drawingBounds.bottom -= frameOffsets.bottom;
                    fg.setBounds(drawingBounds);
                    final Rect framePadding = mFramePadding;
                    drawingBounds.left += framePadding.left - frameOffsets.left;
                    drawingBounds.top += framePadding.top - frameOffsets.top;
                    drawingBounds.right -= framePadding.right - frameOffsets.right;
                    drawingBounds.bottom -= framePadding.bottom - frameOffsets.bottom;
                }

                Drawable bg = getBackground();
                if (bg != null) {
                    bg.setBounds(drawingBounds);
                }

                if (SWEEP_OPEN_MENU) {
                    if (mMenuBackground == null && mFeatureId < 0
                            && getAttributes().height
                            == WindowManager.LayoutParams.MATCH_PARENT) {
                        mMenuBackground = getContext().getDrawable(
                                R.drawable.menu_background);
                    }
                    if (mMenuBackground != null) {
                        mMenuBackground.setBounds(drawingBounds.left,
                                drawingBounds.bottom-6, drawingBounds.right,
                                drawingBounds.bottom+20);
                    }
                }
            }
            return changed;
        }

        @Override
        protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
            final DisplayMetrics metrics = getContext().getResources().getDisplayMetrics();
            final boolean isPortrait = metrics.widthPixels < metrics.heightPixels;

            final int widthMode = getMode(widthMeasureSpec);
            final int heightMode = getMode(heightMeasureSpec);

            boolean fixedWidth = false;
            if (widthMode == AT_MOST) {
                final TypedValue tvw = isPortrait ? mFixedWidthMinor : mFixedWidthMajor;
                if (tvw != null && tvw.type != TypedValue.TYPE_NULL) {
                    final int w;
                    if (tvw.type == TypedValue.TYPE_DIMENSION) {
                        w = (int) tvw.getDimension(metrics);
                    } else if (tvw.type == TypedValue.TYPE_FRACTION) {
                        w = (int) tvw.getFraction(metrics.widthPixels, metrics.widthPixels);
                    } else {
                        w = 0;
                    }

                    if (w > 0) {
                        final int widthSize = MeasureSpec.getSize(widthMeasureSpec);
                        widthMeasureSpec = MeasureSpec.makeMeasureSpec(
                                Math.min(w, widthSize), EXACTLY);
                        fixedWidth = true;
                    }
                }
            }

            if (heightMode == AT_MOST) {
                final TypedValue tvh = isPortrait ? mFixedHeightMajor : mFixedHeightMinor;
                if (tvh != null && tvh.type != TypedValue.TYPE_NULL) {
                    final int h;
                    if (tvh.type == TypedValue.TYPE_DIMENSION) {
                        h = (int) tvh.getDimension(metrics);
                    } else if (tvh.type == TypedValue.TYPE_FRACTION) {
                        h = (int) tvh.getFraction(metrics.heightPixels, metrics.heightPixels);
                    } else {
                        h = 0;
                    }
                    if (h > 0) {
                        final int heightSize = MeasureSpec.getSize(heightMeasureSpec);
                        heightMeasureSpec = MeasureSpec.makeMeasureSpec(
                                Math.min(h, heightSize), EXACTLY);
                    }
                }
            }

            getOutsets(mOutsets);
            if (mOutsets.top > 0 || mOutsets.bottom > 0) {
                int mode = MeasureSpec.getMode(heightMeasureSpec);
                if (mode != MeasureSpec.UNSPECIFIED) {
                    int height = MeasureSpec.getSize(heightMeasureSpec);
                    heightMeasureSpec = MeasureSpec.makeMeasureSpec(
                            height + mOutsets.top + mOutsets.bottom, mode);
                }
            }
            if (mOutsets.left > 0 || mOutsets.right > 0) {
                int mode = MeasureSpec.getMode(widthMeasureSpec);
                if (mode != MeasureSpec.UNSPECIFIED) {
                    int width = MeasureSpec.getSize(widthMeasureSpec);
                    widthMeasureSpec = MeasureSpec.makeMeasureSpec(
                            width + mOutsets.left + mOutsets.right, mode);
                }
            }

            super.onMeasure(widthMeasureSpec, heightMeasureSpec);

            int width = getMeasuredWidth();
            boolean measure = false;

            widthMeasureSpec = MeasureSpec.makeMeasureSpec(width, EXACTLY);

            if (!fixedWidth && widthMode == AT_MOST) {
                final TypedValue tv = isPortrait ? mMinWidthMinor : mMinWidthMajor;
                if (tv.type != TypedValue.TYPE_NULL) {
                    final int min;
                    if (tv.type == TypedValue.TYPE_DIMENSION) {
                        min = (int)tv.getDimension(metrics);
                    } else if (tv.type == TypedValue.TYPE_FRACTION) {
                        min = (int)tv.getFraction(metrics.widthPixels, metrics.widthPixels);
                    } else {
                        min = 0;
                    }

                    if (width < min) {
                        widthMeasureSpec = MeasureSpec.makeMeasureSpec(min, EXACTLY);
                        measure = true;
                    }
                }
            }

            // TODO: Support height?

            if (measure) {
                super.onMeasure(widthMeasureSpec, heightMeasureSpec);
            }
        }

        @Override
        protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
            super.onLayout(changed, left, top, right, bottom);
            getOutsets(mOutsets);
            if (mOutsets.left > 0) {
                offsetLeftAndRight(-mOutsets.left);
            }
            if (mOutsets.top > 0) {
                offsetTopAndBottom(-mOutsets.top);
            }
        }

        @Override
        public void draw(Canvas canvas) {
            super.draw(canvas);

            if (mMenuBackground != null) {
                mMenuBackground.draw(canvas);
            }
        }

        @Override
        public boolean showContextMenuForChild(View originalView) {
            // Reuse the context menu builder
            if (mContextMenu == null) {
                mContextMenu = new ContextMenuBuilder(getContext());
                mContextMenu.setCallback(mContextMenuCallback);
            } else {
                mContextMenu.clearAll();
            }

            final MenuDialogHelper helper = mContextMenu.show(originalView,
                    originalView.getWindowToken());
            if (helper != null) {
                helper.setPresenterCallback(mContextMenuCallback);
            } else if (mContextMenuHelper != null) {
                // No menu to show, but if we have a menu currently showing it just became blank.
                // Close it.
                mContextMenuHelper.dismiss();
            }
            mContextMenuHelper = helper;
            return helper != null;
        }

        @Override
        public ActionMode startActionModeForChild(View originalView,
                ActionMode.Callback callback) {
            return startActionModeForChild(originalView, callback, ActionMode.TYPE_PRIMARY);
        }

        @Override
        public ActionMode startActionModeForChild(
                View child, ActionMode.Callback callback, int type) {
            return startActionMode(child, callback, type);
        }

        @Override
        public ActionMode startActionMode(ActionMode.Callback callback) {
            return startActionMode(callback, ActionMode.TYPE_PRIMARY);
        }

        @Override
        public ActionMode startActionMode(ActionMode.Callback callback, int type) {
            return startActionMode(this, callback, type);
        }

        private ActionMode startActionMode(
                View originatingView, ActionMode.Callback callback, int type) {
            ActionMode.Callback2 wrappedCallback = new ActionModeCallback2Wrapper(callback);
            ActionMode mode = null;
            if (getCallback() != null && !isDestroyed()) {
                try {
                    mode = getCallback().onWindowStartingActionMode(wrappedCallback, type);
                } catch (AbstractMethodError ame) {
                    // Older apps might not implement the typed version of this method.
                    if (type == ActionMode.TYPE_PRIMARY) {
                        try {
                            mode = getCallback().onWindowStartingActionMode(wrappedCallback);
                        } catch (AbstractMethodError ame2) {
                            // Older apps might not implement this callback method at all.
                        }
                    }
                }
            }
            if (mode != null) {
                if (mode.getType() == ActionMode.TYPE_PRIMARY) {
                    cleanupPrimaryActionMode();
                    mPrimaryActionMode = mode;
                } else if (mode.getType() == ActionMode.TYPE_FLOATING) {
                    if (mFloatingActionMode != null) {
                        mFloatingActionMode.finish();
                    }
                    mFloatingActionMode = mode;
                }
            } else {
                mode = createActionMode(type, wrappedCallback, originatingView);
                if (mode != null && wrappedCallback.onCreateActionMode(mode, mode.getMenu())) {
                    setHandledActionMode(mode);
                } else {
                    mode = null;
                }
            }
            if (mode != null && getCallback() != null && !isDestroyed()) {
                try {
                    getCallback().onActionModeStarted(mode);
                } catch (AbstractMethodError ame) {
                    // Older apps might not implement this callback method.
                }
            }
            return mode;
        }

        private void cleanupPrimaryActionMode() {
            if (mPrimaryActionMode != null) {
                mPrimaryActionMode.finish();
                mPrimaryActionMode = null;
            }
            if (mPrimaryActionModeView != null) {
                mPrimaryActionModeView.killMode();
            }
        }

        private void cleanupFloatingActionModeViews() {
            if (mFloatingToolbar != null) {
                mFloatingToolbar.dismiss();
                mFloatingToolbar = null;
            }
            if (mFloatingActionModeOriginatingView != null) {
                if (mFloatingToolbarPreDrawListener != null) {
                    mFloatingActionModeOriginatingView.getViewTreeObserver()
                        .removeOnPreDrawListener(mFloatingToolbarPreDrawListener);
                    mFloatingToolbarPreDrawListener = null;
                }
                mFloatingActionModeOriginatingView = null;
            }
        }

        public void startChanging() {
            mChanging = true;
        }

        public void finishChanging() {
            mChanging = false;
            drawableChanged();
        }

        public void setWindowBackground(Drawable drawable) {
            if (getBackground() != drawable) {
                setBackgroundDrawable(drawable);
                if (drawable != null) {
                    drawable.getPadding(mBackgroundPadding);
                } else {
                    mBackgroundPadding.setEmpty();
                }
                drawableChanged();
            }
        }

        @Override
        public void setBackgroundDrawable(Drawable d) {
            super.setBackgroundDrawable(d);
            if (getWindowToken() != null) {
                updateWindowResizeState();
            }
        }

        public void setWindowFrame(Drawable drawable) {
            if (getForeground() != drawable) {
                setForeground(drawable);
                if (drawable != null) {
                    drawable.getPadding(mFramePadding);
                } else {
                    mFramePadding.setEmpty();
                }
                drawableChanged();
            }
        }

        @Override
        public void onWindowSystemUiVisibilityChanged(int visible) {
            updateColorViews(null /* insets */, true /* animate */);
        }

        @Override
        public WindowInsets onApplyWindowInsets(WindowInsets insets) {
            mFrameOffsets.set(insets.getSystemWindowInsets());
            insets = updateColorViews(insets, true /* animate */);
            insets = updateStatusGuard(insets);
            updateNavigationGuard(insets);
            if (getForeground() != null) {
                drawableChanged();
            }
            return insets;
        }

        @Override
        public boolean isTransitionGroup() {
            return false;
        }

        private WindowInsets updateColorViews(WindowInsets insets, boolean animate) {
            WindowManager.LayoutParams attrs = getAttributes();
            int sysUiVisibility = attrs.systemUiVisibility | getWindowSystemUiVisibility();

            if (!mIsFloating && ActivityManager.isHighEndGfx()) {
                boolean disallowAnimate = !isLaidOut();
                disallowAnimate |= ((mLastWindowFlags ^ attrs.flags)
                        & FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS) != 0;
                mLastWindowFlags = attrs.flags;

                if (insets != null) {
                    mLastTopInset = Math.min(insets.getStableInsetTop(),
                            insets.getSystemWindowInsetTop());
                    mLastBottomInset = Math.min(insets.getStableInsetBottom(),
                            insets.getSystemWindowInsetBottom());
                    mLastRightInset = Math.min(insets.getStableInsetRight(),
                            insets.getSystemWindowInsetRight());

                    // Don't animate if the presence of stable insets has changed, because that
                    // indicates that the window was either just added and received them for the
                    // first time, or the window size or position has changed.
                    boolean hasTopStableInset = insets.getStableInsetTop() != 0;
                    disallowAnimate |= (hasTopStableInset != mLastHasTopStableInset);
                    mLastHasTopStableInset = hasTopStableInset;

                    boolean hasBottomStableInset = insets.getStableInsetBottom() != 0;
                    disallowAnimate |= (hasBottomStableInset != mLastHasBottomStableInset);
                    mLastHasBottomStableInset = hasBottomStableInset;

                    boolean hasRightStableInset = insets.getStableInsetRight() != 0;
                    disallowAnimate |= (hasRightStableInset != mLastHasRightStableInset);
                    mLastHasRightStableInset = hasRightStableInset;
                }

                updateColorViewInt(mStatusColorViewState, sysUiVisibility, mStatusBarColor,
                        mLastTopInset, false /* matchVertical */, animate && !disallowAnimate);

                boolean navBarToRightEdge = mLastBottomInset == 0 && mLastRightInset > 0;
                int navBarSize = navBarToRightEdge ? mLastRightInset : mLastBottomInset;
                updateColorViewInt(mNavigationColorViewState, sysUiVisibility, mNavigationBarColor,
                        navBarSize, navBarToRightEdge, animate && !disallowAnimate);
            }

            // When we expand the window with FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS, we still need
            // to ensure that the rest of the view hierarchy doesn't notice it, unless they've
            // explicitly asked for it.

            boolean consumingNavBar =
                    (attrs.flags & FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS) != 0
                            && (sysUiVisibility & SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION) == 0
                            && (sysUiVisibility & SYSTEM_UI_FLAG_HIDE_NAVIGATION) == 0;

            int consumedRight = consumingNavBar ? mLastRightInset : 0;
            int consumedBottom = consumingNavBar ? mLastBottomInset : 0;

            if (mContentRoot != null
                    && mContentRoot.getLayoutParams() instanceof MarginLayoutParams) {
                MarginLayoutParams lp = (MarginLayoutParams) mContentRoot.getLayoutParams();
                if (lp.rightMargin != consumedRight || lp.bottomMargin != consumedBottom) {
                    lp.rightMargin = consumedRight;
                    lp.bottomMargin = consumedBottom;
                    mContentRoot.setLayoutParams(lp);

                    if (insets == null) {
                        // The insets have changed, but we're not currently in the process
                        // of dispatching them.
                        requestApplyInsets();
                    }
                }
                if (insets != null) {
                    insets = insets.replaceSystemWindowInsets(
                            insets.getSystemWindowInsetLeft(),
                            insets.getSystemWindowInsetTop(),
                            insets.getSystemWindowInsetRight() - consumedRight,
                            insets.getSystemWindowInsetBottom() - consumedBottom);
                }
            }

            if (insets != null) {
                insets = insets.consumeStableInsets();
            }
            return insets;
        }

        /**
         * Update a color view
         *
         * @param state the color view to update.
         * @param sysUiVis the current systemUiVisibility to apply.
         * @param color the current color to apply.
         * @param size the current size in the non-parent-matching dimension.
         * @param verticalBar if true the view is attached to a vertical edge, otherwise to a
         *                    horizontal edge,
         * @param animate if true, the change will be animated.
         */
        private void updateColorViewInt(final ColorViewState state, int sysUiVis, int color,
                int size, boolean verticalBar, boolean animate) {
            boolean show = size > 0 && (sysUiVis & state.systemUiHideFlag) == 0
                    && (getAttributes().flags & state.hideWindowFlag) == 0
                    && (getAttributes().flags & state.translucentFlag) == 0
                    && (color & Color.BLACK) != 0
                    && (getAttributes().flags & FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS) != 0;

            boolean visibilityChanged = false;
            View view = state.view;

            int resolvedHeight = verticalBar ? LayoutParams.MATCH_PARENT : size;
            int resolvedWidth = verticalBar ? size : LayoutParams.MATCH_PARENT;
            int resolvedGravity = verticalBar ? state.horizontalGravity : state.verticalGravity;

            if (view == null) {
                if (show) {
                    state.view = view = new View(mContext);
                    view.setBackgroundColor(color);
                    view.setTransitionName(state.transitionName);
                    view.setId(state.id);
                    visibilityChanged = true;
                    view.setVisibility(INVISIBLE);
                    state.targetVisibility = VISIBLE;

                    addView(view, new LayoutParams(resolvedWidth, resolvedHeight, resolvedGravity));
                    updateColorViewTranslations();
                }
            } else {
                int vis = show ? VISIBLE : INVISIBLE;
                visibilityChanged = state.targetVisibility != vis;
                state.targetVisibility = vis;
                if (show) {
                    LayoutParams lp = (LayoutParams) view.getLayoutParams();
                    if (lp.height != resolvedHeight || lp.width != resolvedWidth
                            || lp.gravity != resolvedGravity) {
                        lp.height = resolvedHeight;
                        lp.width = resolvedWidth;
                        lp.gravity = resolvedGravity;
                        view.setLayoutParams(lp);
                    }
                    view.setBackgroundColor(color);
                }
            }
            if (visibilityChanged) {
                view.animate().cancel();
                if (animate) {
                    if (show) {
                        if (view.getVisibility() != VISIBLE) {
                            view.setVisibility(VISIBLE);
                            view.setAlpha(0.0f);
                        }
                        view.animate().alpha(1.0f).setInterpolator(mShowInterpolator).
                                setDuration(mBarEnterExitDuration);
                    } else {
                        view.animate().alpha(0.0f).setInterpolator(mHideInterpolator)
                                .setDuration(mBarEnterExitDuration)
                                .withEndAction(new Runnable() {
                                    @Override
                                    public void run() {
                                        state.view.setAlpha(1.0f);
                                        state.view.setVisibility(INVISIBLE);
                                    }
                                });
                    }
                } else {
                    view.setAlpha(1.0f);
                    view.setVisibility(show ? VISIBLE : INVISIBLE);
                }
            }
        }

        private void updateColorViewTranslations() {
            // Put the color views back in place when they get moved off the screen
            // due to the the ViewRootImpl panning.
            int rootScrollY = mRootScrollY;
            if (mStatusColorViewState.view != null) {
                mStatusColorViewState.view.setTranslationY(rootScrollY > 0 ? rootScrollY : 0);
            }
            if (mNavigationColorViewState.view != null) {
                mNavigationColorViewState.view.setTranslationY(rootScrollY < 0 ? rootScrollY : 0);
            }
        }

        private WindowInsets updateStatusGuard(WindowInsets insets) {
            boolean showStatusGuard = false;
            // Show the status guard when the non-overlay contextual action bar is showing
            if (mPrimaryActionModeView != null) {
                if (mPrimaryActionModeView.getLayoutParams() instanceof MarginLayoutParams) {
                    // Insets are magic!
                    final MarginLayoutParams mlp = (MarginLayoutParams)
                            mPrimaryActionModeView.getLayoutParams();
                    boolean mlpChanged = false;
                    if (mPrimaryActionModeView.isShown()) {
                        if (mTempRect == null) {
                            mTempRect = new Rect();
                        }
                        final Rect rect = mTempRect;

                        // If the parent doesn't consume the insets, manually
                        // apply the default system window insets.
                        mContentParent.computeSystemWindowInsets(insets, rect);
                        final int newMargin = rect.top == 0 ? insets.getSystemWindowInsetTop() : 0;
                        if (mlp.topMargin != newMargin) {
                            mlpChanged = true;
                            mlp.topMargin = insets.getSystemWindowInsetTop();

                            if (mStatusGuard == null) {
                                mStatusGuard = new View(mContext);
                                mStatusGuard.setBackgroundColor(mContext.getColor(
                                        R.color.input_method_navigation_guard));
                                addView(mStatusGuard, indexOfChild(mStatusColorViewState.view),
                                        new LayoutParams(LayoutParams.MATCH_PARENT,
                                                mlp.topMargin, Gravity.START | Gravity.TOP));
                            } else {
                                final LayoutParams lp = (LayoutParams)
                                        mStatusGuard.getLayoutParams();
                                if (lp.height != mlp.topMargin) {
                                    lp.height = mlp.topMargin;
                                    mStatusGuard.setLayoutParams(lp);
                                }
                            }
                        }

                        // The action mode's theme may differ from the app, so
                        // always show the status guard above it if we have one.
                        showStatusGuard = mStatusGuard != null;

                        // We only need to consume the insets if the action
                        // mode is overlaid on the app content (e.g. it's
                        // sitting in a FrameLayout, see
                        // screen_simple_overlay_action_mode.xml).
                        final boolean nonOverlay = (getLocalFeatures()
                                & (1 << FEATURE_ACTION_MODE_OVERLAY)) == 0;
                        insets = insets.consumeSystemWindowInsets(
                                false, nonOverlay && showStatusGuard /* top */, false, false);
                    } else {
                        // reset top margin
                        if (mlp.topMargin != 0) {
                            mlpChanged = true;
                            mlp.topMargin = 0;
                        }
                    }
                    if (mlpChanged) {
                        mPrimaryActionModeView.setLayoutParams(mlp);
                    }
                }
            }
            if (mStatusGuard != null) {
                mStatusGuard.setVisibility(showStatusGuard ? View.VISIBLE : View.GONE);
            }
            return insets;
        }

        private void updateNavigationGuard(WindowInsets insets) {
            // IMEs lay out below the nav bar, but the content view must not (for back compat)
            if (getAttributes().type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) {
                // prevent the content view from including the nav bar height
                if (mContentParent != null) {
                    if (mContentParent.getLayoutParams() instanceof MarginLayoutParams) {
                        MarginLayoutParams mlp =
                                (MarginLayoutParams) mContentParent.getLayoutParams();
                        mlp.bottomMargin = insets.getSystemWindowInsetBottom();
                        mContentParent.setLayoutParams(mlp);
                    }
                }
                // position the navigation guard view, creating it if necessary
                if (mNavigationGuard == null) {
                    mNavigationGuard = new View(mContext);
                    mNavigationGuard.setBackgroundColor(mContext.getColor(
                            R.color.input_method_navigation_guard));
                    addView(mNavigationGuard, indexOfChild(mNavigationColorViewState.view),
                            new LayoutParams(LayoutParams.MATCH_PARENT,
                                    insets.getSystemWindowInsetBottom(),
                                    Gravity.START | Gravity.BOTTOM));
                } else {
                    LayoutParams lp = (LayoutParams) mNavigationGuard.getLayoutParams();
                    lp.height = insets.getSystemWindowInsetBottom();
                    mNavigationGuard.setLayoutParams(lp);
                }
            }
        }

        private void drawableChanged() {
            if (mChanging) {
                return;
            }

            setPadding(mFramePadding.left + mBackgroundPadding.left, mFramePadding.top
                    + mBackgroundPadding.top, mFramePadding.right + mBackgroundPadding.right,
                    mFramePadding.bottom + mBackgroundPadding.bottom);
            requestLayout();
            invalidate();

            int opacity = PixelFormat.OPAQUE;
            // Note: if there is no background, we will assume opaque. The
            // common case seems to be that an application sets there to be
            // no background so it can draw everything itself. For that,
            // we would like to assume OPAQUE and let the app force it to
            // the slower TRANSLUCENT mode if that is really what it wants.
            Drawable bg = getBackground();
            Drawable fg = getForeground();
            if (bg != null) {
                if (fg == null) {
                    opacity = bg.getOpacity();
                } else if (mFramePadding.left <= 0 && mFramePadding.top <= 0
                        && mFramePadding.right <= 0 && mFramePadding.bottom <= 0) {
                    // If the frame padding is zero, then we can be opaque
                    // if either the frame -or- the background is opaque.
                    int fop = fg.getOpacity();
                    int bop = bg.getOpacity();
                    if (false)
                        Log.v(TAG, "Background opacity: " + bop + ", Frame opacity: " + fop);
                    if (fop == PixelFormat.OPAQUE || bop == PixelFormat.OPAQUE) {
                        opacity = PixelFormat.OPAQUE;
                    } else if (fop == PixelFormat.UNKNOWN) {
                        opacity = bop;
                    } else if (bop == PixelFormat.UNKNOWN) {
                        opacity = fop;
                    } else {
                        opacity = Drawable.resolveOpacity(fop, bop);
                    }
                } else {
                    // For now we have to assume translucent if there is a
                    // frame with padding... there is no way to tell if the
                    // frame and background together will draw all pixels.
                    if (false)
                        Log.v(TAG, "Padding: " + mFramePadding);
                    opacity = PixelFormat.TRANSLUCENT;
                }
            }

            if (false)
                Log.v(TAG, "Background: " + bg + ", Frame: " + fg);
            if (false)
                Log.v(TAG, "Selected default opacity: " + opacity);

            mDefaultOpacity = opacity;
            if (mFeatureId < 0) {
                setDefaultWindowFormat(opacity);
            }
        }

        @Override
        public void onWindowFocusChanged(boolean hasWindowFocus) {
            super.onWindowFocusChanged(hasWindowFocus);

            // If the user is chording a menu shortcut, release the chord since
            // this window lost focus
            if (hasFeature(FEATURE_OPTIONS_PANEL) && !hasWindowFocus && mPanelChordingKey != 0) {
                closePanel(FEATURE_OPTIONS_PANEL);
            }

            final Callback cb = getCallback();
            if (cb != null && !isDestroyed() && mFeatureId < 0) {
                cb.onWindowFocusChanged(hasWindowFocus);
            }

            if (mPrimaryActionMode != null) {
                mPrimaryActionMode.onWindowFocusChanged(hasWindowFocus);
            }
            if (mFloatingActionMode != null) {
                mFloatingActionMode.onWindowFocusChanged(hasWindowFocus);
            }
        }

        void updateWindowResizeState() {
            Drawable bg = getBackground();
            hackTurnOffWindowResizeAnim(bg == null || bg.getOpacity()
                    != PixelFormat.OPAQUE);
        }

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

            updateWindowResizeState();

            final Callback cb = getCallback();
            if (cb != null && !isDestroyed() && mFeatureId < 0) {
                cb.onAttachedToWindow();
            }

            if (mFeatureId == -1) {
                /*
                 * The main window has been attached, try to restore any panels
                 * that may have been open before. This is called in cases where
                 * an activity is being killed for configuration change and the
                 * menu was open. When the activity is recreated, the menu
                 * should be shown again.
                 */
                openPanelsAfterRestore();
            }
        }

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

            final Callback cb = getCallback();
            if (cb != null && mFeatureId < 0) {
                cb.onDetachedFromWindow();
            }

            if (mDecorContentParent != null) {
                mDecorContentParent.dismissPopups();
            }

            if (mPrimaryActionModePopup != null) {
                removeCallbacks(mShowPrimaryActionModePopup);
                if (mPrimaryActionModePopup.isShowing()) {
                    mPrimaryActionModePopup.dismiss();
                }
                mPrimaryActionModePopup = null;
            }
            if (mFloatingToolbar != null) {
                mFloatingToolbar.dismiss();
                mFloatingToolbar = null;
            }

            PanelFeatureState st = getPanelState(FEATURE_OPTIONS_PANEL, false);
            if (st != null && st.menu != null && mFeatureId < 0) {
                st.menu.close();
            }
        }

        @Override
        public void onCloseSystemDialogs(String reason) {
            if (mFeatureId >= 0) {
                closeAllPanels();
            }
        }

        public android.view.SurfaceHolder.Callback2 willYouTakeTheSurface() {
            return mFeatureId < 0 ? mTakeSurfaceCallback : null;
        }

        public InputQueue.Callback willYouTakeTheInputQueue() {
            return mFeatureId < 0 ? mTakeInputQueueCallback : null;
        }

        public void setSurfaceType(int type) {
            PhoneWindow.this.setType(type);
        }

        public void setSurfaceFormat(int format) {
            PhoneWindow.this.setFormat(format);
        }

        public void setSurfaceKeepScreenOn(boolean keepOn) {
            if (keepOn) PhoneWindow.this.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
            else PhoneWindow.this.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
        }

        @Override
        public void onRootViewScrollYChanged(int rootScrollY) {
            mRootScrollY = rootScrollY;
            updateColorViewTranslations();
        }

        private ActionMode createActionMode(
                int type, ActionMode.Callback2 callback, View originatingView) {
            switch (type) {
                case ActionMode.TYPE_PRIMARY:
                default:
                    return createStandaloneActionMode(callback);
                case ActionMode.TYPE_FLOATING:
                    return createFloatingActionMode(originatingView, callback);
            }
        }

        private void setHandledActionMode(ActionMode mode) {
            if (mode.getType() == ActionMode.TYPE_PRIMARY) {
                setHandledPrimaryActionMode(mode);
            } else if (mode.getType() == ActionMode.TYPE_FLOATING) {
                setHandledFloatingActionMode(mode);
            }
        }

        private ActionMode createStandaloneActionMode(ActionMode.Callback callback) {
            endOnGoingFadeAnimation();
            cleanupPrimaryActionMode();
            if (mPrimaryActionModeView == null) {
                if (isFloating()) {
                    // Use the action bar theme.
                    final TypedValue outValue = new TypedValue();
                    final Theme baseTheme = mContext.getTheme();
                    baseTheme.resolveAttribute(R.attr.actionBarTheme, outValue, true);

                    final Context actionBarContext;
                    if (outValue.resourceId != 0) {
                        final Theme actionBarTheme = mContext.getResources().newTheme();
                        actionBarTheme.setTo(baseTheme);
                        actionBarTheme.applyStyle(outValue.resourceId, true);

                        actionBarContext = new ContextThemeWrapper(mContext, 0);
                        actionBarContext.getTheme().setTo(actionBarTheme);
                    } else {
                        actionBarContext = mContext;
                    }

                    mPrimaryActionModeView = new ActionBarContextView(actionBarContext);
                    mPrimaryActionModePopup = new PopupWindow(actionBarContext, null,
                            R.attr.actionModePopupWindowStyle);
                    mPrimaryActionModePopup.setWindowLayoutType(
                            WindowManager.LayoutParams.TYPE_APPLICATION);
                    mPrimaryActionModePopup.setContentView(mPrimaryActionModeView);
                    mPrimaryActionModePopup.setWidth(MATCH_PARENT);

                    actionBarContext.getTheme().resolveAttribute(
                            R.attr.actionBarSize, outValue, true);
                    final int height = TypedValue.complexToDimensionPixelSize(outValue.data,
                            actionBarContext.getResources().getDisplayMetrics());
                    mPrimaryActionModeView.setContentHeight(height);
                    mPrimaryActionModePopup.setHeight(WRAP_CONTENT);
                    mShowPrimaryActionModePopup = new Runnable() {
                        public void run() {
                            mPrimaryActionModePopup.showAtLocation(
                                    mPrimaryActionModeView.getApplicationWindowToken(),
                                    Gravity.TOP | Gravity.FILL_HORIZONTAL, 0, 0);
                            endOnGoingFadeAnimation();
                            mFadeAnim = ObjectAnimator.ofFloat(mPrimaryActionModeView, View.ALPHA,
                                    0f, 1f);
                            mFadeAnim.addListener(new Animator.AnimatorListener() {
                                @Override
                                public void onAnimationStart(Animator animation) {
                                    mPrimaryActionModeView.setVisibility(VISIBLE);
                                }

                                @Override
                                public void onAnimationEnd(Animator animation) {
                                    mPrimaryActionModeView.setAlpha(1f);
                                    mFadeAnim = null;
                                }

                                @Override
                                public void onAnimationCancel(Animator animation) {

                                }

                                @Override
                                public void onAnimationRepeat(Animator animation) {

                                }
                            });
                            mFadeAnim.start();
                        }
                    };
                } else {
                    ViewStub stub = (ViewStub) findViewById(
                            R.id.action_mode_bar_stub);
                    if (stub != null) {
                        mPrimaryActionModeView = (ActionBarContextView) stub.inflate();
                    }
                }
            }
            if (mPrimaryActionModeView != null) {
                mPrimaryActionModeView.killMode();
                ActionMode mode = new StandaloneActionMode(
                        mPrimaryActionModeView.getContext(), mPrimaryActionModeView,
                        callback, mPrimaryActionModePopup == null);
                return mode;
            }
            return null;
        }

        private void endOnGoingFadeAnimation() {
            if (mFadeAnim != null) {
                mFadeAnim.end();
            }
        }

        private void setHandledPrimaryActionMode(ActionMode mode) {
            endOnGoingFadeAnimation();
            mPrimaryActionMode = mode;
            mPrimaryActionMode.invalidate();
            mPrimaryActionModeView.initForMode(mPrimaryActionMode);
            if (mPrimaryActionModePopup != null) {
                post(mShowPrimaryActionModePopup);
            } else {
                mFadeAnim = ObjectAnimator.ofFloat(mPrimaryActionModeView, View.ALPHA, 0f, 1f);
                mFadeAnim.addListener(new Animator.AnimatorListener() {
                    @Override
                    public void onAnimationStart(Animator animation) {
                        mPrimaryActionModeView.setVisibility(View.VISIBLE);
                    }

                    @Override
                    public void onAnimationEnd(Animator animation) {
                        mPrimaryActionModeView.setAlpha(1f);
                        mFadeAnim = null;
                    }

                    @Override
                    public void onAnimationCancel(Animator animation) {

                    }

                    @Override
                    public void onAnimationRepeat(Animator animation) {

                    }
                });
                mFadeAnim.start();
            }
            mPrimaryActionModeView.sendAccessibilityEvent(
                    AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
        }

        private ActionMode createFloatingActionMode(
                View originatingView, ActionMode.Callback2 callback) {
            if (mFloatingActionMode != null) {
                mFloatingActionMode.finish();
            }
            cleanupFloatingActionModeViews();
            final FloatingActionMode mode =
                    new FloatingActionMode(mContext, callback, originatingView);
            mFloatingActionModeOriginatingView = originatingView;
            mFloatingToolbarPreDrawListener =
                new OnPreDrawListener() {
                    @Override
                    public boolean onPreDraw() {
                        mode.updateViewLocationInWindow();
                        return true;
                    }
                };
            return mode;
        }

        private void setHandledFloatingActionMode(ActionMode mode) {
            mFloatingActionMode = mode;
            mFloatingToolbar = new FloatingToolbar(mContext, PhoneWindow.this);
            ((FloatingActionMode) mFloatingActionMode).setFloatingToolbar(mFloatingToolbar);
            mFloatingActionMode.invalidate();  // Will show the floating toolbar if necessary.
            mFloatingActionModeOriginatingView.getViewTreeObserver()
                .addOnPreDrawListener(mFloatingToolbarPreDrawListener);
        }

        /**
         * Clears out internal references when the action mode is destroyed.
         */
        private class ActionModeCallback2Wrapper extends ActionMode.Callback2 {
            private final ActionMode.Callback mWrapped;

            public ActionModeCallback2Wrapper(ActionMode.Callback wrapped) {
                mWrapped = wrapped;
            }

            public boolean onCreateActionMode(ActionMode mode, Menu menu) {
                return mWrapped.onCreateActionMode(mode, menu);
            }

            public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
                requestFitSystemWindows();
                return mWrapped.onPrepareActionMode(mode, menu);
            }

            public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
                return mWrapped.onActionItemClicked(mode, item);
            }

            public void onDestroyActionMode(ActionMode mode) {
                mWrapped.onDestroyActionMode(mode);
                final boolean isMncApp = mContext.getApplicationInfo().targetSdkVersion
                        >= Build.VERSION_CODES.MNC;
                final boolean isPrimary;
                final boolean isFloating;
                if (isMncApp) {
                    isPrimary = mode == mPrimaryActionMode;
                    isFloating = mode == mFloatingActionMode;
                    if (!isPrimary && mode.getType() == ActionMode.TYPE_PRIMARY) {
                        Log.e(TAG, "Destroying unexpected ActionMode instance of TYPE_PRIMARY; "
                                + mode + " was not the current primary action mode! Expected "
                                + mPrimaryActionMode);
                    }
                    if (!isFloating && mode.getType() == ActionMode.TYPE_FLOATING) {
                        Log.e(TAG, "Destroying unexpected ActionMode instance of TYPE_FLOATING; "
                                + mode + " was not the current floating action mode! Expected "
                                + mFloatingActionMode);
                    }
                } else {
                    isPrimary = mode.getType() == ActionMode.TYPE_PRIMARY;
                    isFloating = mode.getType() == ActionMode.TYPE_FLOATING;
                }
                if (isPrimary) {
                    if (mPrimaryActionModePopup != null) {
                        removeCallbacks(mShowPrimaryActionModePopup);
                    }
                    if (mPrimaryActionModeView != null) {
                        endOnGoingFadeAnimation();
                        mFadeAnim = ObjectAnimator.ofFloat(mPrimaryActionModeView, View.ALPHA,
                                1f, 0f);
                        mFadeAnim.addListener(new Animator.AnimatorListener() {
                                    @Override
                                    public void onAnimationStart(Animator animation) {

                                    }

                                    @Override
                                    public void onAnimationEnd(Animator animation) {
                                        mPrimaryActionModeView.setVisibility(GONE);
                                        if (mPrimaryActionModePopup != null) {
                                            mPrimaryActionModePopup.dismiss();
                                        }
                                        mPrimaryActionModeView.removeAllViews();
                                        mFadeAnim = null;
                                    }

                                    @Override
                                    public void onAnimationCancel(Animator animation) {

                                    }

                                    @Override
                                    public void onAnimationRepeat(Animator animation) {

                                    }
                                });
                        mFadeAnim.start();
                    }

                    mPrimaryActionMode = null;
                } else if (isFloating) {
                    cleanupFloatingActionModeViews();
                    mFloatingActionMode = null;
                }
                if (getCallback() != null && !isDestroyed()) {
                    try {
                        getCallback().onActionModeFinished(mode);
                    } catch (AbstractMethodError ame) {
                        // Older apps might not implement this callback method.
                    }
                }
                requestFitSystemWindows();
            }

            @Override
            public void onGetContentRect(ActionMode mode, View view, Rect outRect) {
                if (mWrapped instanceof ActionMode.Callback2) {
                    ((ActionMode.Callback2) mWrapped).onGetContentRect(mode, view, outRect);
                } else {
                    super.onGetContentRect(mode, view, outRect);
                }
            }
        }
    }

    protected DecorView generateDecor() {
        return new DecorView(getContext(), -1);
    }

    protected void setFeatureFromAttrs(int featureId, TypedArray attrs,
            int drawableAttr, int alphaAttr) {
        Drawable d = attrs.getDrawable(drawableAttr);
        if (d != null) {
            requestFeature(featureId);
            setFeatureDefaultDrawable(featureId, d);
        }
        if ((getFeatures() & (1 << featureId)) != 0) {
            int alpha = attrs.getInt(alphaAttr, -1);
            if (alpha >= 0) {
                setFeatureDrawableAlpha(featureId, alpha);
            }
        }
    }

    protected ViewGroup generateLayout(DecorView decor) {
        // Apply data from current theme.

        TypedArray a = getWindowStyle();

        if (false) {
            System.out.println("From style:");
            String s = "Attrs:";
            for (int i = 0; i < R.styleable.Window.length; i++) {
                s = s + " " + Integer.toHexString(R.styleable.Window[i]) + "="
                        + a.getString(i);
            }
            System.out.println(s);
        }

        mIsFloating = a.getBoolean(R.styleable.Window_windowIsFloating, false);
        int flagsToUpdate = (FLAG_LAYOUT_IN_SCREEN|FLAG_LAYOUT_INSET_DECOR)
                & (~getForcedWindowFlags());
        if (mIsFloating) {
            setLayout(WRAP_CONTENT, WRAP_CONTENT);
            setFlags(0, flagsToUpdate);
        } else {
            setFlags(FLAG_LAYOUT_IN_SCREEN|FLAG_LAYOUT_INSET_DECOR, flagsToUpdate);
        }

        if (a.getBoolean(R.styleable.Window_windowNoTitle, false)) {
            requestFeature(FEATURE_NO_TITLE);
        } else if (a.getBoolean(R.styleable.Window_windowActionBar, false)) {
            // Don't allow an action bar if there is no title.
            requestFeature(FEATURE_ACTION_BAR);
        }

        if (a.getBoolean(R.styleable.Window_windowActionBarOverlay, false)) {
            requestFeature(FEATURE_ACTION_BAR_OVERLAY);
        }

        if (a.getBoolean(R.styleable.Window_windowActionModeOverlay, false)) {
            requestFeature(FEATURE_ACTION_MODE_OVERLAY);
        }

        if (a.getBoolean(R.styleable.Window_windowSwipeToDismiss, false)) {
            requestFeature(FEATURE_SWIPE_TO_DISMISS);
        }

        if (a.getBoolean(R.styleable.Window_windowFullscreen, false)) {
            setFlags(FLAG_FULLSCREEN, FLAG_FULLSCREEN & (~getForcedWindowFlags()));
        }

        if (a.getBoolean(R.styleable.Window_windowTranslucentStatus,
                false)) {
            setFlags(FLAG_TRANSLUCENT_STATUS, FLAG_TRANSLUCENT_STATUS
                    & (~getForcedWindowFlags()));
        }

        if (a.getBoolean(R.styleable.Window_windowTranslucentNavigation,
                false)) {
            setFlags(FLAG_TRANSLUCENT_NAVIGATION, FLAG_TRANSLUCENT_NAVIGATION
                    & (~getForcedWindowFlags()));
        }

        if (a.getBoolean(R.styleable.Window_windowOverscan, false)) {
            setFlags(FLAG_LAYOUT_IN_OVERSCAN, FLAG_LAYOUT_IN_OVERSCAN&(~getForcedWindowFlags()));
        }

        if (a.getBoolean(R.styleable.Window_windowShowWallpaper, false)) {
            setFlags(FLAG_SHOW_WALLPAPER, FLAG_SHOW_WALLPAPER&(~getForcedWindowFlags()));
        }

        if (a.getBoolean(R.styleable.Window_windowEnableSplitTouch,
                getContext().getApplicationInfo().targetSdkVersion
                        >= android.os.Build.VERSION_CODES.HONEYCOMB)) {
            setFlags(FLAG_SPLIT_TOUCH, FLAG_SPLIT_TOUCH&(~getForcedWindowFlags()));
        }

        a.getValue(R.styleable.Window_windowMinWidthMajor, mMinWidthMajor);
        a.getValue(R.styleable.Window_windowMinWidthMinor, mMinWidthMinor);
        if (a.hasValue(R.styleable.Window_windowFixedWidthMajor)) {
            if (mFixedWidthMajor == null) mFixedWidthMajor = new TypedValue();
            a.getValue(R.styleable.Window_windowFixedWidthMajor,
                    mFixedWidthMajor);
        }
        if (a.hasValue(R.styleable.Window_windowFixedWidthMinor)) {
            if (mFixedWidthMinor == null) mFixedWidthMinor = new TypedValue();
            a.getValue(R.styleable.Window_windowFixedWidthMinor,
                    mFixedWidthMinor);
        }
        if (a.hasValue(R.styleable.Window_windowFixedHeightMajor)) {
            if (mFixedHeightMajor == null) mFixedHeightMajor = new TypedValue();
            a.getValue(R.styleable.Window_windowFixedHeightMajor,
                    mFixedHeightMajor);
        }
        if (a.hasValue(R.styleable.Window_windowFixedHeightMinor)) {
            if (mFixedHeightMinor == null) mFixedHeightMinor = new TypedValue();
            a.getValue(R.styleable.Window_windowFixedHeightMinor,
                    mFixedHeightMinor);
        }
        if (a.getBoolean(R.styleable.Window_windowContentTransitions, false)) {
            requestFeature(FEATURE_CONTENT_TRANSITIONS);
        }
        if (a.getBoolean(R.styleable.Window_windowActivityTransitions, false)) {
            requestFeature(FEATURE_ACTIVITY_TRANSITIONS);
        }

        final Context context = getContext();
        final int targetSdk = context.getApplicationInfo().targetSdkVersion;
        final boolean targetPreHoneycomb = targetSdk < android.os.Build.VERSION_CODES.HONEYCOMB;
        final boolean targetPreIcs = targetSdk < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH;
        final boolean targetPreL = targetSdk < android.os.Build.VERSION_CODES.LOLLIPOP;
        final boolean targetHcNeedsOptions = context.getResources().getBoolean(
                R.bool.target_honeycomb_needs_options_menu);
        final boolean noActionBar = !hasFeature(FEATURE_ACTION_BAR) || hasFeature(FEATURE_NO_TITLE);

        if (targetPreHoneycomb || (targetPreIcs && targetHcNeedsOptions && noActionBar)) {
            setNeedsMenuKey(WindowManager.LayoutParams.NEEDS_MENU_SET_TRUE);
        } else {
            setNeedsMenuKey(WindowManager.LayoutParams.NEEDS_MENU_SET_FALSE);
        }

        // Non-floating windows on high end devices must put up decor beneath the system bars and
        // therefore must know about visibility changes of those.
        if (!mIsFloating && ActivityManager.isHighEndGfx()) {
            if (!targetPreL && a.getBoolean(
                    R.styleable.Window_windowDrawsSystemBarBackgrounds,
                    false)) {
                setFlags(FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS,
                        FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS & ~getForcedWindowFlags());
            }
        }
        if (!mForcedStatusBarColor) {
            mStatusBarColor = a.getColor(R.styleable.Window_statusBarColor, 0xFF000000);
        }
        if (!mForcedNavigationBarColor) {
            mNavigationBarColor = a.getColor(R.styleable.Window_navigationBarColor, 0xFF000000);
        }
        if (a.getBoolean(R.styleable.Window_windowLightStatusBar, false)) {
            decor.setSystemUiVisibility(
                    decor.getSystemUiVisibility() | View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
        }

        if (mAlwaysReadCloseOnTouchAttr || getContext().getApplicationInfo().targetSdkVersion
                >= android.os.Build.VERSION_CODES.HONEYCOMB) {
            if (a.getBoolean(
                    R.styleable.Window_windowCloseOnTouchOutside,
                    false)) {
                setCloseOnTouchOutsideIfNotSet(true);
            }
        }

        WindowManager.LayoutParams params = getAttributes();

        if (!hasSoftInputMode()) {
            params.softInputMode = a.getInt(
                    R.styleable.Window_windowSoftInputMode,
                    params.softInputMode);
        }

        if (a.getBoolean(R.styleable.Window_backgroundDimEnabled,
                mIsFloating)) {
            /* All dialogs should have the window dimmed */
            if ((getForcedWindowFlags()&WindowManager.LayoutParams.FLAG_DIM_BEHIND) == 0) {
                params.flags |= WindowManager.LayoutParams.FLAG_DIM_BEHIND;
            }
            if (!haveDimAmount()) {
                params.dimAmount = a.getFloat(
                        android.R.styleable.Window_backgroundDimAmount, 0.5f);
            }
        }

        if (params.windowAnimations == 0) {
            params.windowAnimations = a.getResourceId(
                    R.styleable.Window_windowAnimationStyle, 0);
        }

        // The rest are only done if this window is not embedded; otherwise,
        // the values are inherited from our container.
        if (getContainer() == null) {
            if (mBackgroundDrawable == null) {
                if (mBackgroundResource == 0) {
                    mBackgroundResource = a.getResourceId(
                            R.styleable.Window_windowBackground, 0);
                }
                if (mFrameResource == 0) {
                    mFrameResource = a.getResourceId(R.styleable.Window_windowFrame, 0);
                }
                mBackgroundFallbackResource = a.getResourceId(
                        R.styleable.Window_windowBackgroundFallback, 0);
                if (false) {
                    System.out.println("Background: "
                            + Integer.toHexString(mBackgroundResource) + " Frame: "
                            + Integer.toHexString(mFrameResource));
                }
            }
            mElevation = a.getDimension(R.styleable.Window_windowElevation, 0);
            mClipToOutline = a.getBoolean(R.styleable.Window_windowClipToOutline, false);
            mTextColor = a.getColor(R.styleable.Window_textColor, Color.TRANSPARENT);
        }

        // Inflate the window decor.

        int layoutResource;
        int features = getLocalFeatures();
        // System.out.println("Features: 0x" + Integer.toHexString(features));
        if ((features & (1 << FEATURE_SWIPE_TO_DISMISS)) != 0) {
            layoutResource = R.layout.screen_swipe_dismiss;
        } else if ((features & ((1 << FEATURE_LEFT_ICON) | (1 << FEATURE_RIGHT_ICON))) != 0) {
            if (mIsFloating) {
                TypedValue res = new TypedValue();
                getContext().getTheme().resolveAttribute(
                        R.attr.dialogTitleIconsDecorLayout, res, true);
                layoutResource = res.resourceId;
            } else {
                layoutResource = R.layout.screen_title_icons;
            }
            // XXX Remove this once action bar supports these features.
            removeFeature(FEATURE_ACTION_BAR);
            // System.out.println("Title Icons!");
        } else if ((features & ((1 << FEATURE_PROGRESS) | (1 << FEATURE_INDETERMINATE_PROGRESS))) != 0
                && (features & (1 << FEATURE_ACTION_BAR)) == 0) {
            // Special case for a window with only a progress bar (and title).
            // XXX Need to have a no-title version of embedded windows.
            layoutResource = R.layout.screen_progress;
            // System.out.println("Progress!");
        } else if ((features & (1 << FEATURE_CUSTOM_TITLE)) != 0) {
            // Special case for a window with a custom title.
            // If the window is floating, we need a dialog layout
            if (mIsFloating) {
                TypedValue res = new TypedValue();
                getContext().getTheme().resolveAttribute(
                        R.attr.dialogCustomTitleDecorLayout, res, true);
                layoutResource = res.resourceId;
            } else {
                layoutResource = R.layout.screen_custom_title;
            }
            // XXX Remove this once action bar supports these features.
            removeFeature(FEATURE_ACTION_BAR);
        } else if ((features & (1 << FEATURE_NO_TITLE)) == 0) {
            // If no other features and not embedded, only need a title.
            // If the window is floating, we need a dialog layout
            if (mIsFloating) {
                TypedValue res = new TypedValue();
                getContext().getTheme().resolveAttribute(
                        R.attr.dialogTitleDecorLayout, res, true);
                layoutResource = res.resourceId;
            } else if ((features & (1 << FEATURE_ACTION_BAR)) != 0) {
                layoutResource = a.getResourceId(
                        R.styleable.Window_windowActionBarFullscreenDecorLayout,
                        R.layout.screen_action_bar);
            } else {
                layoutResource = R.layout.screen_title;
            }
            // System.out.println("Title!");
        } else if ((features & (1 << FEATURE_ACTION_MODE_OVERLAY)) != 0) {
            layoutResource = R.layout.screen_simple_overlay_action_mode;
        } else {
            // Embedded, so no decoration is needed.
            layoutResource = R.layout.screen_simple;
            // System.out.println("Simple!");
        }

        mDecor.startChanging();

        View in = mLayoutInflater.inflate(layoutResource, null);
        decor.addView(in, new ViewGroup.LayoutParams(MATCH_PARENT, MATCH_PARENT));
        mContentRoot = (ViewGroup) in;

        ViewGroup contentParent = (ViewGroup)findViewById(ID_ANDROID_CONTENT);
        if (contentParent == null) {
            throw new RuntimeException("Window couldn't find content container view");
        }

        if ((features & (1 << FEATURE_INDETERMINATE_PROGRESS)) != 0) {
            ProgressBar progress = getCircularProgressBar(false);
            if (progress != null) {
                progress.setIndeterminate(true);
            }
        }

        if ((features & (1 << FEATURE_SWIPE_TO_DISMISS)) != 0) {
            registerSwipeCallbacks();
        }

        // Remaining setup -- of background and title -- that only applies
        // to top-level windows.
        if (getContainer() == null) {
            final Drawable background;
            if (mBackgroundResource != 0) {
                background = getContext().getDrawable(mBackgroundResource);
            } else {
                background = mBackgroundDrawable;
            }
            mDecor.setWindowBackground(background);

            final Drawable frame;
            if (mFrameResource != 0) {
                frame = getContext().getDrawable(mFrameResource);
            } else {
                frame = null;
            }
            mDecor.setWindowFrame(frame);

            mDecor.setElevation(mElevation);
            mDecor.setClipToOutline(mClipToOutline);

            if (mTitle != null) {
                setTitle(mTitle);
            }

            if (mTitleColor == 0) {
                mTitleColor = mTextColor;
            }
            setTitleColor(mTitleColor);
        }

        mDecor.finishChanging();

        return contentParent;
    }

    /** @hide */
    public void alwaysReadCloseOnTouchAttr() {
        mAlwaysReadCloseOnTouchAttr = true;
    }

    private void installDecor() {
        if (mDecor == null) {
            mDecor = generateDecor();
            mDecor.setDescendantFocusability(ViewGroup.FOCUS_AFTER_DESCENDANTS);
            mDecor.setIsRootNamespace(true);
            if (!mInvalidatePanelMenuPosted && mInvalidatePanelMenuFeatures != 0) {
                mDecor.postOnAnimation(mInvalidatePanelMenuRunnable);
            }
        }
        if (mContentParent == null) {
            mContentParent = generateLayout(mDecor);

            // Set up decor part of UI to ignore fitsSystemWindows if appropriate.
            mDecor.makeOptionalFitsSystemWindows();

            final DecorContentParent decorContentParent = (DecorContentParent) mDecor.findViewById(
                    R.id.decor_content_parent);

            if (decorContentParent != null) {
                mDecorContentParent = decorContentParent;
                mDecorContentParent.setWindowCallback(getCallback());
                if (mDecorContentParent.getTitle() == null) {
                    mDecorContentParent.setWindowTitle(mTitle);
                }

                final int localFeatures = getLocalFeatures();
                for (int i = 0; i < FEATURE_MAX; i++) {
                    if ((localFeatures & (1 << i)) != 0) {
                        mDecorContentParent.initFeature(i);
                    }
                }

                mDecorContentParent.setUiOptions(mUiOptions);

                if ((mResourcesSetFlags & FLAG_RESOURCE_SET_ICON) != 0 ||
                        (mIconRes != 0 && !mDecorContentParent.hasIcon())) {
                    mDecorContentParent.setIcon(mIconRes);
                } else if ((mResourcesSetFlags & FLAG_RESOURCE_SET_ICON) == 0 &&
                        mIconRes == 0 && !mDecorContentParent.hasIcon()) {
                    mDecorContentParent.setIcon(
                            getContext().getPackageManager().getDefaultActivityIcon());
                    mResourcesSetFlags |= FLAG_RESOURCE_SET_ICON_FALLBACK;
                }
                if ((mResourcesSetFlags & FLAG_RESOURCE_SET_LOGO) != 0 ||
                        (mLogoRes != 0 && !mDecorContentParent.hasLogo())) {
                    mDecorContentParent.setLogo(mLogoRes);
                }

                // Invalidate if the panel menu hasn't been created before this.
                // Panel menu invalidation is deferred avoiding application onCreateOptionsMenu
                // being called in the middle of onCreate or similar.
                // A pending invalidation will typically be resolved before the posted message
                // would run normally in order to satisfy instance state restoration.
                PanelFeatureState st = getPanelState(FEATURE_OPTIONS_PANEL, false);
                if (!isDestroyed() && (st == null || st.menu == null) && !mIsStartingWindow) {
                    invalidatePanelMenu(FEATURE_ACTION_BAR);
                }
            } else {
                mTitleView = (TextView)findViewById(R.id.title);
                if (mTitleView != null) {
                    mTitleView.setLayoutDirection(mDecor.getLayoutDirection());
                    if ((getLocalFeatures() & (1 << FEATURE_NO_TITLE)) != 0) {
                        View titleContainer = findViewById(
                                R.id.title_container);
                        if (titleContainer != null) {
                            titleContainer.setVisibility(View.GONE);
                        } else {
                            mTitleView.setVisibility(View.GONE);
                        }
                        if (mContentParent instanceof FrameLayout) {
                            ((FrameLayout)mContentParent).setForeground(null);
                        }
                    } else {
                        mTitleView.setText(mTitle);
                    }
                }
            }

            if (mDecor.getBackground() == null && mBackgroundFallbackResource != 0) {
                mDecor.setBackgroundFallback(mBackgroundFallbackResource);
            }

            // Only inflate or create a new TransitionManager if the caller hasn't
            // already set a custom one.
            if (hasFeature(FEATURE_ACTIVITY_TRANSITIONS)) {
                if (mTransitionManager == null) {
                    final int transitionRes = getWindowStyle().getResourceId(
                            R.styleable.Window_windowContentTransitionManager,
                            0);
                    if (transitionRes != 0) {
                        final TransitionInflater inflater = TransitionInflater.from(getContext());
                        mTransitionManager = inflater.inflateTransitionManager(transitionRes,
                                mContentParent);
                    } else {
                        mTransitionManager = new TransitionManager();
                    }
                }

                mEnterTransition = getTransition(mEnterTransition, null,
                        R.styleable.Window_windowEnterTransition);
                mReturnTransition = getTransition(mReturnTransition, USE_DEFAULT_TRANSITION,
                        R.styleable.Window_windowReturnTransition);
                mExitTransition = getTransition(mExitTransition, null,
                        R.styleable.Window_windowExitTransition);
                mReenterTransition = getTransition(mReenterTransition, USE_DEFAULT_TRANSITION,
                        R.styleable.Window_windowReenterTransition);
                mSharedElementEnterTransition = getTransition(mSharedElementEnterTransition, null,
                        R.styleable.Window_windowSharedElementEnterTransition);
                mSharedElementReturnTransition = getTransition(mSharedElementReturnTransition,
                        USE_DEFAULT_TRANSITION,
                        R.styleable.Window_windowSharedElementReturnTransition);
                mSharedElementExitTransition = getTransition(mSharedElementExitTransition, null,
                        R.styleable.Window_windowSharedElementExitTransition);
                mSharedElementReenterTransition = getTransition(mSharedElementReenterTransition,
                        USE_DEFAULT_TRANSITION,
                        R.styleable.Window_windowSharedElementReenterTransition);
                if (mAllowEnterTransitionOverlap == null) {
                    mAllowEnterTransitionOverlap = getWindowStyle().getBoolean(
                            R.styleable.Window_windowAllowEnterTransitionOverlap, true);
                }
                if (mAllowReturnTransitionOverlap == null) {
                    mAllowReturnTransitionOverlap = getWindowStyle().getBoolean(
                            R.styleable.Window_windowAllowReturnTransitionOverlap, true);
                }
                if (mBackgroundFadeDurationMillis < 0) {
                    mBackgroundFadeDurationMillis = getWindowStyle().getInteger(
                            R.styleable.Window_windowTransitionBackgroundFadeDuration,
                            DEFAULT_BACKGROUND_FADE_DURATION_MS);
                }
                if (mSharedElementsUseOverlay == null) {
                    mSharedElementsUseOverlay = getWindowStyle().getBoolean(
                            R.styleable.Window_windowSharedElementsUseOverlay, true);
                }
            }
        }
    }

    private Transition getTransition(Transition currentValue, Transition defaultValue, int id) {
        if (currentValue != defaultValue) {
            return currentValue;
        }
        int transitionId = getWindowStyle().getResourceId(id, -1);
        Transition transition = defaultValue;
        if (transitionId != -1 && transitionId != R.transition.no_transition) {
            TransitionInflater inflater = TransitionInflater.from(getContext());
            transition = inflater.inflateTransition(transitionId);
            if (transition instanceof TransitionSet &&
                    ((TransitionSet)transition).getTransitionCount() == 0) {
                transition = null;
            }
        }
        return transition;
    }

    private Drawable loadImageURI(Uri uri) {
        try {
            return Drawable.createFromStream(
                    getContext().getContentResolver().openInputStream(uri), null);
        } catch (Exception e) {
            Log.w(TAG, "Unable to open content: " + uri);
        }
        return null;
    }

    private DrawableFeatureState getDrawableState(int featureId, boolean required) {
        if ((getFeatures() & (1 << featureId)) == 0) {
            if (!required) {
                return null;
            }
            throw new RuntimeException("The feature has not been requested");
        }

        DrawableFeatureState[] ar;
        if ((ar = mDrawables) == null || ar.length <= featureId) {
            DrawableFeatureState[] nar = new DrawableFeatureState[featureId + 1];
            if (ar != null) {
                System.arraycopy(ar, 0, nar, 0, ar.length);
            }
            mDrawables = ar = nar;
        }

        DrawableFeatureState st = ar[featureId];
        if (st == null) {
            ar[featureId] = st = new DrawableFeatureState(featureId);
        }
        return st;
    }

    /**
     * Gets a panel's state based on its feature ID.
     *
     * @param featureId The feature ID of the panel.
     * @param required Whether the panel is required (if it is required and it
     *            isn't in our features, this throws an exception).
     * @return The panel state.
     */
    private PanelFeatureState getPanelState(int featureId, boolean required) {
        return getPanelState(featureId, required, null);
    }

    /**
     * Gets a panel's state based on its feature ID.
     *
     * @param featureId The feature ID of the panel.
     * @param required Whether the panel is required (if it is required and it
     *            isn't in our features, this throws an exception).
     * @param convertPanelState Optional: If the panel state does not exist, use
     *            this as the panel state.
     * @return The panel state.
     */
    private PanelFeatureState getPanelState(int featureId, boolean required,
            PanelFeatureState convertPanelState) {
        if ((getFeatures() & (1 << featureId)) == 0) {
            if (!required) {
                return null;
            }
            throw new RuntimeException("The feature has not been requested");
        }

        PanelFeatureState[] ar;
        if ((ar = mPanels) == null || ar.length <= featureId) {
            PanelFeatureState[] nar = new PanelFeatureState[featureId + 1];
            if (ar != null) {
                System.arraycopy(ar, 0, nar, 0, ar.length);
            }
            mPanels = ar = nar;
        }

        PanelFeatureState st = ar[featureId];
        if (st == null) {
            ar[featureId] = st = (convertPanelState != null)
                    ? convertPanelState
                    : new PanelFeatureState(featureId);
        }
        return st;
    }

    @Override
    public final void setChildDrawable(int featureId, Drawable drawable) {
        DrawableFeatureState st = getDrawableState(featureId, true);
        st.child = drawable;
        updateDrawable(featureId, st, false);
    }

    @Override
    public final void setChildInt(int featureId, int value) {
        updateInt(featureId, value, false);
    }

    @Override
    public boolean isShortcutKey(int keyCode, KeyEvent event) {
        PanelFeatureState st = getPanelState(FEATURE_OPTIONS_PANEL, false);
        return st != null && st.menu != null && st.menu.isShortcutKey(keyCode, event);
    }

    private void updateDrawable(int featureId, DrawableFeatureState st, boolean fromResume) {
        // Do nothing if the decor is not yet installed... an update will
        // need to be forced when we eventually become active.
        if (mContentParent == null) {
            return;
        }

        final int featureMask = 1 << featureId;

        if ((getFeatures() & featureMask) == 0 && !fromResume) {
            return;
        }

        Drawable drawable = null;
        if (st != null) {
            drawable = st.child;
            if (drawable == null)
                drawable = st.local;
            if (drawable == null)
                drawable = st.def;
        }
        if ((getLocalFeatures() & featureMask) == 0) {
            if (getContainer() != null) {
                if (isActive() || fromResume) {
                    getContainer().setChildDrawable(featureId, drawable);
                }
            }
        } else if (st != null && (st.cur != drawable || st.curAlpha != st.alpha)) {
            // System.out.println("Drawable changed: old=" + st.cur
            // + ", new=" + drawable);
            st.cur = drawable;
            st.curAlpha = st.alpha;
            onDrawableChanged(featureId, drawable, st.alpha);
        }
    }

    private void updateInt(int featureId, int value, boolean fromResume) {

        // Do nothing if the decor is not yet installed... an update will
        // need to be forced when we eventually become active.
        if (mContentParent == null) {
            return;
        }

        final int featureMask = 1 << featureId;

        if ((getFeatures() & featureMask) == 0 && !fromResume) {
            return;
        }

        if ((getLocalFeatures() & featureMask) == 0) {
            if (getContainer() != null) {
                getContainer().setChildInt(featureId, value);
            }
        } else {
            onIntChanged(featureId, value);
        }
    }

    private ImageView getLeftIconView() {
        if (mLeftIconView != null) {
            return mLeftIconView;
        }
        if (mContentParent == null) {
            installDecor();
        }
        return (mLeftIconView = (ImageView)findViewById(R.id.left_icon));
    }

    @Override
    protected void dispatchWindowAttributesChanged(WindowManager.LayoutParams attrs) {
        super.dispatchWindowAttributesChanged(attrs);
        if (mDecor != null) {
            mDecor.updateColorViews(null /* insets */, true /* animate */);
        }
    }

    private ProgressBar getCircularProgressBar(boolean shouldInstallDecor) {
        if (mCircularProgressBar != null) {
            return mCircularProgressBar;
        }
        if (mContentParent == null && shouldInstallDecor) {
            installDecor();
        }
        mCircularProgressBar = (ProgressBar) findViewById(R.id.progress_circular);
        if (mCircularProgressBar != null) {
            mCircularProgressBar.setVisibility(View.INVISIBLE);
        }
        return mCircularProgressBar;
    }

    private ProgressBar getHorizontalProgressBar(boolean shouldInstallDecor) {
        if (mHorizontalProgressBar != null) {
            return mHorizontalProgressBar;
        }
        if (mContentParent == null && shouldInstallDecor) {
            installDecor();
        }
        mHorizontalProgressBar = (ProgressBar) findViewById(R.id.progress_horizontal);
        if (mHorizontalProgressBar != null) {
            mHorizontalProgressBar.setVisibility(View.INVISIBLE);
        }
        return mHorizontalProgressBar;
    }

    private ImageView getRightIconView() {
        if (mRightIconView != null) {
            return mRightIconView;
        }
        if (mContentParent == null) {
            installDecor();
        }
        return (mRightIconView = (ImageView)findViewById(R.id.right_icon));
    }

    private void registerSwipeCallbacks() {
        SwipeDismissLayout swipeDismiss =
                (SwipeDismissLayout) findViewById(R.id.content);
        swipeDismiss.setOnDismissedListener(new SwipeDismissLayout.OnDismissedListener() {
            @Override
            public void onDismissed(SwipeDismissLayout layout) {
                dispatchOnWindowDismissed();
            }
        });
        swipeDismiss.setOnSwipeProgressChangedListener(
                new SwipeDismissLayout.OnSwipeProgressChangedListener() {
                    private static final float ALPHA_DECREASE = 0.5f;
                    private boolean mIsTranslucent = false;
                    @Override
                    public void onSwipeProgressChanged(
                            SwipeDismissLayout layout, float progress, float translate) {
                        WindowManager.LayoutParams newParams = getAttributes();
                        newParams.x = (int) translate;
                        newParams.alpha = 1 - (progress * ALPHA_DECREASE);
                        setAttributes(newParams);

                        int flags = 0;
                        if (newParams.x == 0) {
                            flags = FLAG_FULLSCREEN;
                        } else {
                            flags = FLAG_LAYOUT_NO_LIMITS;
                        }
                        setFlags(flags, FLAG_FULLSCREEN | FLAG_LAYOUT_NO_LIMITS);
                    }

                    @Override
                    public void onSwipeCancelled(SwipeDismissLayout layout) {
                        WindowManager.LayoutParams newParams = getAttributes();
                        newParams.x = 0;
                        newParams.alpha = 1;
                        setAttributes(newParams);
                        setFlags(FLAG_FULLSCREEN, FLAG_FULLSCREEN | FLAG_LAYOUT_NO_LIMITS);
                    }
                });
    }

    /**
     * Helper method for calling the {@link Callback#onPanelClosed(int, Menu)}
     * callback. This method will grab whatever extra state is needed for the
     * callback that isn't given in the parameters. If the panel is not open,
     * this will not perform the callback.
     *
     * @param featureId Feature ID of the panel that was closed. Must be given.
     * @param panel Panel that was closed. Optional but useful if there is no
     *            menu given.
     * @param menu The menu that was closed. Optional, but give if you have.
     */
    private void callOnPanelClosed(int featureId, PanelFeatureState panel, Menu menu) {
        final Callback cb = getCallback();
        if (cb == null)
            return;

        // Try to get a menu
        if (menu == null) {
            // Need a panel to grab the menu, so try to get that
            if (panel == null) {
                if ((featureId >= 0) && (featureId < mPanels.length)) {
                    panel = mPanels[featureId];
                }
            }

            if (panel != null) {
                // menu still may be null, which is okay--we tried our best
                menu = panel.menu;
            }
        }

        // If the panel is not open, do not callback
        if ((panel != null) && (!panel.isOpen))
            return;

        if (!isDestroyed()) {
            cb.onPanelClosed(featureId, menu);
        }
    }

    /**
     * Helper method for adding launch-search to most applications. Opens the
     * search window using default settings.
     *
     * @return true if search window opened
     */
    private boolean launchDefaultSearch(KeyEvent event) {
        boolean result;
        final Callback cb = getCallback();
        if (cb == null || isDestroyed()) {
            result = false;
        } else {
            sendCloseSystemWindows("search");
            int deviceId = event.getDeviceId();
            SearchEvent searchEvent = null;
            if (deviceId != 0) {
                searchEvent = new SearchEvent(InputDevice.getDevice(deviceId));
            }
            try {
                result = cb.onSearchRequested(searchEvent);
            } catch (AbstractMethodError e) {
                Log.e(TAG, "WindowCallback " + cb.getClass().getName() + " does not implement"
                        + " method onSearchRequested(SearchEvent); fa", e);
                result = cb.onSearchRequested();
            }
        }
        if (!result && (getContext().getResources().getConfiguration().uiMode
                & Configuration.UI_MODE_TYPE_MASK) == Configuration.UI_MODE_TYPE_TELEVISION) {
            // On TVs, if the app doesn't implement search, we want to launch assist.
            Bundle args = new Bundle();
            args.putInt(Intent.EXTRA_ASSIST_INPUT_DEVICE_ID, event.getDeviceId());
            return ((SearchManager)getContext().getSystemService(Context.SEARCH_SERVICE))
                    .launchLegacyAssist(null, UserHandle.myUserId(), args);
        }
        return result;
    }

    @Override
    public void setVolumeControlStream(int streamType) {
        mVolumeControlStreamType = streamType;
    }

    @Override
    public int getVolumeControlStream() {
        return mVolumeControlStreamType;
    }

    @Override
    public void setMediaController(MediaController controller) {
        mMediaController = controller;
    }

    @Override
    public MediaController getMediaController() {
        return mMediaController;
    }

    @Override
    public void setEnterTransition(Transition enterTransition) {
        mEnterTransition = enterTransition;
    }

    @Override
    public void setReturnTransition(Transition transition) {
        mReturnTransition = transition;
    }

    @Override
    public void setExitTransition(Transition exitTransition) {
        mExitTransition = exitTransition;
    }

    @Override
    public void setReenterTransition(Transition transition) {
        mReenterTransition = transition;
    }

    @Override
    public void setSharedElementEnterTransition(Transition sharedElementEnterTransition) {
        mSharedElementEnterTransition = sharedElementEnterTransition;
    }

    @Override
    public void setSharedElementReturnTransition(Transition transition) {
        mSharedElementReturnTransition = transition;
    }

    @Override
    public void setSharedElementExitTransition(Transition sharedElementExitTransition) {
        mSharedElementExitTransition = sharedElementExitTransition;
    }

    @Override
    public void setSharedElementReenterTransition(Transition transition) {
        mSharedElementReenterTransition = transition;
    }

    @Override
    public Transition getEnterTransition() {
        return mEnterTransition;
    }

    @Override
    public Transition getReturnTransition() {
        return mReturnTransition == USE_DEFAULT_TRANSITION ? getEnterTransition()
                : mReturnTransition;
    }

    @Override
    public Transition getExitTransition() {
        return mExitTransition;
    }

    @Override
    public Transition getReenterTransition() {
        return mReenterTransition == USE_DEFAULT_TRANSITION ? getExitTransition()
                : mReenterTransition;
    }

    @Override
    public Transition getSharedElementEnterTransition() {
        return mSharedElementEnterTransition;
    }

    @Override
    public Transition getSharedElementReturnTransition() {
        return mSharedElementReturnTransition == USE_DEFAULT_TRANSITION
                ? getSharedElementEnterTransition() : mSharedElementReturnTransition;
    }

    @Override
    public Transition getSharedElementExitTransition() {
        return mSharedElementExitTransition;
    }

    @Override
    public Transition getSharedElementReenterTransition() {
        return mSharedElementReenterTransition == USE_DEFAULT_TRANSITION
                ? getSharedElementExitTransition() : mSharedElementReenterTransition;
    }

    @Override
    public void setAllowEnterTransitionOverlap(boolean allow) {
        mAllowEnterTransitionOverlap = allow;
    }

    @Override
    public boolean getAllowEnterTransitionOverlap() {
        return (mAllowEnterTransitionOverlap == null) ? true : mAllowEnterTransitionOverlap;
    }

    @Override
    public void setAllowReturnTransitionOverlap(boolean allowExitTransitionOverlap) {
        mAllowReturnTransitionOverlap = allowExitTransitionOverlap;
    }

    @Override
    public boolean getAllowReturnTransitionOverlap() {
        return (mAllowReturnTransitionOverlap == null) ? true : mAllowReturnTransitionOverlap;
    }

    @Override
    public long getTransitionBackgroundFadeDuration() {
        return (mBackgroundFadeDurationMillis < 0) ? DEFAULT_BACKGROUND_FADE_DURATION_MS
                : mBackgroundFadeDurationMillis;
    }

    @Override
    public void setTransitionBackgroundFadeDuration(long fadeDurationMillis) {
        if (fadeDurationMillis < 0) {
            throw new IllegalArgumentException("negative durations are not allowed");
        }
        mBackgroundFadeDurationMillis = fadeDurationMillis;
    }

    @Override
    public void setSharedElementsUseOverlay(boolean sharedElementsUseOverlay) {
        mSharedElementsUseOverlay = sharedElementsUseOverlay;
    }

    @Override
    public boolean getSharedElementsUseOverlay() {
        return (mSharedElementsUseOverlay == null) ? true : mSharedElementsUseOverlay;
    }

    private static final class DrawableFeatureState {
        DrawableFeatureState(int _featureId) {
            featureId = _featureId;
        }

        final int featureId;

        int resid;

        Uri uri;

        Drawable local;

        Drawable child;

        Drawable def;

        Drawable cur;

        int alpha = 255;

        int curAlpha = 255;
    }

    private static final class PanelFeatureState {

        /** Feature ID for this panel. */
        int featureId;

        // Information pulled from the style for this panel.

        int background;

        /** The background when the panel spans the entire available width. */
        int fullBackground;

        int gravity;

        int x;

        int y;

        int windowAnimations;

        /** Dynamic state of the panel. */
        DecorView decorView;

        /** The panel that was returned by onCreatePanelView(). */
        View createdPanelView;

        /** The panel that we are actually showing. */
        View shownPanelView;

        /** Use {@link #setMenu} to set this. */
        MenuBuilder menu;

        IconMenuPresenter iconMenuPresenter;
        ListMenuPresenter listMenuPresenter;

        /** true if this menu will show in single-list compact mode */
        boolean isCompact;

        /** Theme resource ID for list elements of the panel menu */
        int listPresenterTheme;

        /**
         * Whether the panel has been prepared (see
         * {@link PhoneWindow#preparePanel}).
         */
        boolean isPrepared;

        /**
         * Whether an item's action has been performed. This happens in obvious
         * scenarios (user clicks on menu item), but can also happen with
         * chording menu+(shortcut key).
         */
        boolean isHandled;

        boolean isOpen;

        /**
         * True if the menu is in expanded mode, false if the menu is in icon
         * mode
         */
        boolean isInExpandedMode;

        public boolean qwertyMode;

        boolean refreshDecorView;

        boolean refreshMenuContent;

        boolean wasLastOpen;

        boolean wasLastExpanded;

        /**
         * Contains the state of the menu when told to freeze.
         */
        Bundle frozenMenuState;

        /**
         * Contains the state of associated action views when told to freeze.
         * These are saved across invalidations.
         */
        Bundle frozenActionViewState;

        PanelFeatureState(int featureId) {
            this.featureId = featureId;

            refreshDecorView = false;
        }

        public boolean isInListMode() {
            return isInExpandedMode || isCompact;
        }

        public boolean hasPanelItems() {
            if (shownPanelView == null) return false;
            if (createdPanelView != null) return true;

            if (isCompact || isInExpandedMode) {
                return listMenuPresenter.getAdapter().getCount() > 0;
            } else {
                return ((ViewGroup) shownPanelView).getChildCount() > 0;
            }
        }

        /**
         * Unregister and free attached MenuPresenters. They will be recreated as needed.
         */
        public void clearMenuPresenters() {
            if (menu != null) {
                menu.removeMenuPresenter(iconMenuPresenter);
                menu.removeMenuPresenter(listMenuPresenter);
            }
            iconMenuPresenter = null;
            listMenuPresenter = null;
        }

        void setStyle(Context context) {
            TypedArray a = context.obtainStyledAttributes(R.styleable.Theme);
            background = a.getResourceId(
                    R.styleable.Theme_panelBackground, 0);
            fullBackground = a.getResourceId(
                    R.styleable.Theme_panelFullBackground, 0);
            windowAnimations = a.getResourceId(
                    R.styleable.Theme_windowAnimationStyle, 0);
            isCompact = a.getBoolean(
                    R.styleable.Theme_panelMenuIsCompact, false);
            listPresenterTheme = a.getResourceId(
                    R.styleable.Theme_panelMenuListTheme,
                    R.style.Theme_ExpandedMenu);
            a.recycle();
        }

        void setMenu(MenuBuilder menu) {
            if (menu == this.menu) return;

            if (this.menu != null) {
                this.menu.removeMenuPresenter(iconMenuPresenter);
                this.menu.removeMenuPresenter(listMenuPresenter);
            }
            this.menu = menu;
            if (menu != null) {
                if (iconMenuPresenter != null) menu.addMenuPresenter(iconMenuPresenter);
                if (listMenuPresenter != null) menu.addMenuPresenter(listMenuPresenter);
            }
        }

        MenuView getListMenuView(Context context, MenuPresenter.Callback cb) {
            if (menu == null) return null;

            if (!isCompact) {
                getIconMenuView(context, cb); // Need this initialized to know where our offset goes
            }

            if (listMenuPresenter == null) {
                listMenuPresenter = new ListMenuPresenter(
                        R.layout.list_menu_item_layout, listPresenterTheme);
                listMenuPresenter.setCallback(cb);
                listMenuPresenter.setId(R.id.list_menu_presenter);
                menu.addMenuPresenter(listMenuPresenter);
            }

            if (iconMenuPresenter != null) {
                listMenuPresenter.setItemIndexOffset(
                        iconMenuPresenter.getNumActualItemsShown());
            }
            MenuView result = listMenuPresenter.getMenuView(decorView);

            return result;
        }

        MenuView getIconMenuView(Context context, MenuPresenter.Callback cb) {
            if (menu == null) return null;

            if (iconMenuPresenter == null) {
                iconMenuPresenter = new IconMenuPresenter(context);
                iconMenuPresenter.setCallback(cb);
                iconMenuPresenter.setId(R.id.icon_menu_presenter);
                menu.addMenuPresenter(iconMenuPresenter);
            }

            MenuView result = iconMenuPresenter.getMenuView(decorView);

            return result;
        }

        Parcelable onSaveInstanceState() {
            SavedState savedState = new SavedState();
            savedState.featureId = featureId;
            savedState.isOpen = isOpen;
            savedState.isInExpandedMode = isInExpandedMode;

            if (menu != null) {
                savedState.menuState = new Bundle();
                menu.savePresenterStates(savedState.menuState);
            }

            return savedState;
        }

        void onRestoreInstanceState(Parcelable state) {
            SavedState savedState = (SavedState) state;
            featureId = savedState.featureId;
            wasLastOpen = savedState.isOpen;
            wasLastExpanded = savedState.isInExpandedMode;
            frozenMenuState = savedState.menuState;

            /*
             * A LocalActivityManager keeps the same instance of this class around.
             * The first time the menu is being shown after restoring, the
             * Activity.onCreateOptionsMenu should be called. But, if it is the
             * same instance then menu != null and we won't call that method.
             * We clear any cached views here. The caller should invalidatePanelMenu.
             */
            createdPanelView = null;
            shownPanelView = null;
            decorView = null;
        }

        void applyFrozenState() {
            if (menu != null && frozenMenuState != null) {
                menu.restorePresenterStates(frozenMenuState);
                frozenMenuState = null;
            }
        }

        private static class SavedState implements Parcelable {
            int featureId;
            boolean isOpen;
            boolean isInExpandedMode;
            Bundle menuState;

            public int describeContents() {
                return 0;
            }

            public void writeToParcel(Parcel dest, int flags) {
                dest.writeInt(featureId);
                dest.writeInt(isOpen ? 1 : 0);
                dest.writeInt(isInExpandedMode ? 1 : 0);

                if (isOpen) {
                    dest.writeBundle(menuState);
                }
            }

            private static SavedState readFromParcel(Parcel source) {
                SavedState savedState = new SavedState();
                savedState.featureId = source.readInt();
                savedState.isOpen = source.readInt() == 1;
                savedState.isInExpandedMode = source.readInt() == 1;

                if (savedState.isOpen) {
                    savedState.menuState = source.readBundle();
                }

                return savedState;
            }

            public static final Parcelable.Creator<SavedState> CREATOR
                    = new Parcelable.Creator<SavedState>() {
                public SavedState createFromParcel(Parcel in) {
                    return readFromParcel(in);
                }

                public SavedState[] newArray(int size) {
                    return new SavedState[size];
                }
            };
        }

    }

    static class RotationWatcher extends Stub {
        private Handler mHandler;
        private final Runnable mRotationChanged = new Runnable() {
            public void run() {
                dispatchRotationChanged();
            }
        };
        private final ArrayList<WeakReference<PhoneWindow>> mWindows =
                new ArrayList<WeakReference<PhoneWindow>>();
        private boolean mIsWatching;

        @Override
        public void onRotationChanged(int rotation) throws RemoteException {
            mHandler.post(mRotationChanged);
        }

        public void addWindow(PhoneWindow phoneWindow) {
            synchronized (mWindows) {
                if (!mIsWatching) {
                    try {
                        WindowManagerHolder.sWindowManager.watchRotation(this);
                        mHandler = new Handler();
                        mIsWatching = true;
                    } catch (RemoteException ex) {
                        Log.e(TAG, "Couldn't start watching for device rotation", ex);
                    }
                }
                mWindows.add(new WeakReference<PhoneWindow>(phoneWindow));
            }
        }

        public void removeWindow(PhoneWindow phoneWindow) {
            synchronized (mWindows) {
                int i = 0;
                while (i < mWindows.size()) {
                    final WeakReference<PhoneWindow> ref = mWindows.get(i);
                    final PhoneWindow win = ref.get();
                    if (win == null || win == phoneWindow) {
                        mWindows.remove(i);
                    } else {
                        i++;
                    }
                }
            }
        }

        void dispatchRotationChanged() {
            synchronized (mWindows) {
                int i = 0;
                while (i < mWindows.size()) {
                    final WeakReference<PhoneWindow> ref = mWindows.get(i);
                    final PhoneWindow win = ref.get();
                    if (win != null) {
                        win.onOptionsPanelRotationChanged();
                        i++;
                    } else {
                        mWindows.remove(i);
                    }
                }
            }
        }
    }

    /**
     * Simple implementation of MenuBuilder.Callback that:
     * <li> Opens a submenu when selected.
     * <li> Calls back to the callback's onMenuItemSelected when an item is
     * selected.
     */
    private final class DialogMenuCallback implements MenuBuilder.Callback, MenuPresenter.Callback {
        private int mFeatureId;
        private MenuDialogHelper mSubMenuHelper;

        public DialogMenuCallback(int featureId) {
            mFeatureId = featureId;
        }

        public void onCloseMenu(MenuBuilder menu, boolean allMenusAreClosing) {
            if (menu.getRootMenu() != menu) {
                onCloseSubMenu(menu);
            }

            if (allMenusAreClosing) {
                Callback callback = getCallback();
                if (callback != null && !isDestroyed()) {
                    callback.onPanelClosed(mFeatureId, menu);
                }

                if (menu == mContextMenu) {
                    dismissContextMenu();
                }

                // Dismiss the submenu, if it is showing
                if (mSubMenuHelper != null) {
                    mSubMenuHelper.dismiss();
                    mSubMenuHelper = null;
                }
            }
        }

        public void onCloseSubMenu(MenuBuilder menu) {
            Callback callback = getCallback();
            if (callback != null && !isDestroyed()) {
                callback.onPanelClosed(mFeatureId, menu.getRootMenu());
            }
        }

        public boolean onMenuItemSelected(MenuBuilder menu, MenuItem item) {
            Callback callback = getCallback();
            return (callback != null && !isDestroyed())
                    && callback.onMenuItemSelected(mFeatureId, item);
        }

        public void onMenuModeChange(MenuBuilder menu) {
        }

        public boolean onOpenSubMenu(MenuBuilder subMenu) {
            if (subMenu == null) return false;

            // Set a simple callback for the submenu
            subMenu.setCallback(this);

            // The window manager will give us a valid window token
            mSubMenuHelper = new MenuDialogHelper(subMenu);
            mSubMenuHelper.show(null);

            return true;
        }
    }

    private static class ColorViewState {
        View view = null;
        int targetVisibility = View.INVISIBLE;

        final int id;
        final int systemUiHideFlag;
        final int translucentFlag;
        final int verticalGravity;
        final int horizontalGravity;
        final String transitionName;
        final int hideWindowFlag;

        ColorViewState(int systemUiHideFlag,
                int translucentFlag, int verticalGravity, int horizontalGravity,
                String transitionName, int id, int hideWindowFlag) {
            this.id = id;
            this.systemUiHideFlag = systemUiHideFlag;
            this.translucentFlag = translucentFlag;
            this.verticalGravity = verticalGravity;
            this.horizontalGravity = horizontalGravity;
            this.transitionName = transitionName;
            this.hideWindowFlag = hideWindowFlag;
        }
    }

    void sendCloseSystemWindows() {
        sendCloseSystemWindows(getContext(), null);
    }

    void sendCloseSystemWindows(String reason) {
        sendCloseSystemWindows(getContext(), reason);
    }

    public static void sendCloseSystemWindows(Context context, String reason) {
        if (ActivityManagerNative.isSystemReady()) {
            try {
                ActivityManagerNative.getDefault().closeSystemDialogs(reason);
            } catch (RemoteException e) {
            }
        }
    }

    @Override
    public int getStatusBarColor() {
        return mStatusBarColor;
    }

    @Override
    public void setStatusBarColor(int color) {
        mStatusBarColor = color;
        mForcedStatusBarColor = true;
        if (mDecor != null) {
            mDecor.updateColorViews(null, false /* animate */);
        }
    }

    @Override
    public int getNavigationBarColor() {
        return mNavigationBarColor;
    }

    @Override
    public void setNavigationBarColor(int color) {
        mNavigationBarColor = color;
        mForcedNavigationBarColor = true;
        if (mDecor != null) {
            mDecor.updateColorViews(null, false /* animate */);
        }
    }

    public void setIsStartingWindow(boolean isStartingWindow) {
        mIsStartingWindow = isStartingWindow;
    }
}