Package org.jjazz.songstructure.api

Interface SgsChangeListener

All Known Implementing Classes:
MidiMix, PianoRollEditorTopComponent, Song, StructuralChangeListener
public interface SgsChangeListener
Listen to a SongStructure changes.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    authorizeChange(SgsChangeEvent e)
    Some change events might need to be authorized by all listeners before being processed by songStructureChanged().
    void
    songStructureChanged(SgsChangeEvent e)
    Process the change.

  • Method Details

    • authorizeChange

      void authorizeChange(SgsChangeEvent e) throws UnsupportedEditException
      Some change events might need to be authorized by all listeners before being processed by songStructureChanged().
      Parameters:
      e - The change to authorize.
      Throws:
      UnsupportedEditException - Listener shall throw this exception if change is not acceptable. Exception message might be shown to user to explain the problem.

    • songStructureChanged

      void songStructureChanged(SgsChangeEvent e)
      Process the change.

      Note that this method might be called outside of the EDT.

      Parameters:
      e -
      Throws:
      IllegalStateException - If change is not authorized by this listener.