Returns the mode of a window or null if it is not found.
Parameters: window - the window from which the mode is returned the mode throws: IllegalArgumentException -
Returns the window state of a window or null if it is not found.
Parameters: window - the window from which the window state is returned the window state throws: IllegalArgumentException -
Updates the window state of a window.
Parameters: window - the window to update Parameters: windowState - the new window state value throws: IllegalArgumentException -