Merge "Implement requestKeyboardShortcuts for PopupDecorView"

import android.util.AttributeSet;

import android.view.Gravity;

import android.view.KeyEvent;

import android.view.KeyboardShortcutGroup;

import android.view.MotionEvent;

import android.view.View;

import android.view.View.OnAttachStateChangeListener;

import com.android.internal.R;

import java.lang.ref.WeakReference;

import java.util.List;

/**

 * <p>

    private Context mContext;

    private WindowManager mWindowManager;

    /**

     * Keeps track of popup's parent's decor view. This is needed to dispatch

     * requestKeyboardShortcuts to the owning Activity.

     */

    private WeakReference<View> mParentRootView;

    private boolean mIsShowing;

    private boolean mIsTransitioningToDismiss;

    private boolean mIsDropdown;

     * @param y the popup's y location offset

     */

    public void showAtLocation(View parent, int gravity, int x, int y) {

        mParentRootView = new WeakReference<>(parent.getRootView());

        showAtLocation(parent.getWindowToken(), gravity, x, y);

    }

        mAnchor = new WeakReference<>(anchor);

        mAnchorRoot = new WeakReference<>(anchorRoot);

        mIsAnchorRootAttached = anchorRoot.isAttachedToWindow();

        mParentRootView = mAnchorRoot;

        mAnchorXoff = xoff;

        mAnchorYoff = yoff;

                        TransitionManager.endTransitions(PopupDecorView.this);

                    }

                };

        @Override

        public void requestKeyboardShortcuts(List<KeyboardShortcutGroup> list, int deviceId) {

            if (mParentRootView != null) {

                View parentRoot = mParentRootView.get();

                if (parentRoot != null) {

                    parentRoot.requestKeyboardShortcuts(list, deviceId);

                }

            }

        }

    }

    private class PopupBackgroundView extends FrameLayout {