Adjust the bounding boxes used to position the widget div to deal with RTL goog.ui.Menu positioning. In RTL mode the menu renders down and to the left of its start point, instead of down and to the right. Adjusting all of the bounding boxes accordingly allows us to use the same code for all widgets. This function in-place modifies the provided bounding boxes.
The bounding rectangle of the current viewport, in window coordinates.
The bounding rectangle of the anchor, in window coordinates.
The size of the menu that is inside the widget div, in window coordinates.
Get the size of a rendered goog.ui.Menu.
non-null goog.math.Size Object with width and height properties.