Package jmri.jmrit.symbolicprog

Class QualifierCombiner

  • All Implemented Interfaces:
    java.beans.PropertyChangeListener, java.util.EventListener, Qualifier
    public class QualifierCombiner
extends java.lang.Object
implements Qualifier, java.beans.PropertyChangeListener
    Force a set of Qualifiers to work in an AND relationship.

    On transition, the qualifiers are evaluated in order, stopping when the outcome is known.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      (package private) java.util.List<Qualifier> qualifiers  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean currentDesiredState()
      Check whether this Qualifier is currently in the OK, qualified-to-act state.
      void propertyChange​(java.beans.PropertyChangeEvent e)  
      void setWatchedAvailable​(boolean enable)
      Drive the available or not state of the qualified object.
      void update()
      Process the current value and do whatever is needed.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Method Detail

      • propertyChange

        public void propertyChange​(java.beans.PropertyChangeEvent e)
        Specified by:
        propertyChange in interface java.beans.PropertyChangeListener

      • setWatchedAvailable

        public void setWatchedAvailable​(boolean enable)
        Description copied from interface: Qualifier
        Drive the available or not state of the qualified object.

        Subclasses implement this to control a specific type of qualified object, like a Variable or Pane.

        Specified by:
        setWatchedAvailable in interface Qualifier
        Parameters:
        enable - true to drive, else false.

      • currentDesiredState

        public boolean currentDesiredState()
        Description copied from interface: Qualifier
        Check whether this Qualifier is currently in the OK, qualified-to-act state.
        Specified by:
        currentDesiredState in interface Qualifier
        Returns:
        true if this Qualifier is currently saying OK

      • update

        public void update()
        Description copied from interface: Qualifier
        Process the current value and do whatever is needed.
        Specified by:
        update in interface Qualifier