SplitPaneDividerPositionListener.java 文件源码

/**
 * Constructs a new {@link SplitPaneDividerPositionListener}.
 * @param subject the {@link SplitPane} subject to monitor.
 * @param callBack the {@link DividerPositionsChangedCallBack} to trigger.
 */
public SplitPaneDividerPositionListener( SplitPane subject, DividerPositionsChangedCallBack callBack ) {
   this.subject = subject;
   this.positionDividers = new HashSet<>();
   this.commonListener = ( source, old, updated ) -> callBack.dividerPositionsChanged();

   this.subject.getDividers().addListener( ( Change< ? extends Divider > change ) -> updateDividerRegistrations() );
   updateDividerRegistrations();
}