Manages the current selection in a multi-page editor by tracking the active nested editor within the multi-page editor. When the selection changes, notifications are sent to all registered listeners.
This class may be instantiated; it is not intended to be subclassed. The base implementation of MultiPageEditor.init creates an instance of this class.
All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.