Fix a bug where context menu keeps popping up as we move cursor.

import android.view.View;

import android.view.View.OnTouchListener;

import com.android.documentsui.Events;

// Previously we listened to events with one class, only to bounce them forward

// to GestureDetector. We're still doing that here, but with a single class

// that reduces overall complexity in our glue code.

// Receives event meant for both directory and empty view, and either pass them to

// {@link UserInputHandler} for simple gestures (Single Tap, Long-Press), or intercept them for

// other types of gestures (drag n' drop)

final class ListeningGestureDetector extends GestureDetector

        implements OnItemTouchListener, OnTouchListener {

        if (itemView != null && mDragHelper.onTouch(itemView,  e)) {

            return true;

        }

        // Forward unhandled events to the GestureDetector.

        // Forward unhandled events to UserInputHandler.

        return onTouchEvent(e);

    }

    @Override

    public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {}

    // For mEmptyView right-click context menu

    // For mEmptyView events

    @Override

    public boolean onTouch(View v, MotionEvent event) {

        if (event.getButtonState() == MotionEvent.BUTTON_SECONDARY) {

            return mInputHandler.onRightClick(event);

        }

        return false;

        // Pass events to UserInputHandler.

        return onTouchEvent(event);

    }

}

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