Package org.fxmisc.undo

Interface UndoManager.UndoPosition

All Known Implementing Classes:
UndoManagerImpl.UndoPositionImpl
Enclosing interface:
UndoManager<C>
public static interface UndoManager.UndoPosition
Represents a position in UndoManager's history.

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    isValid()
    Checks whether this history position is still valid.
    void
    mark()
    Sets the mark of the underlying UndoManager at this position.

  • Method Details

    • mark

      void mark()
      Sets the mark of the underlying UndoManager at this position. The mark is set whether or not this position is valid. It is OK for an UndoManager to be marked at an invalid position.

    • isValid

      boolean isValid()
      Checks whether this history position is still valid. A position becomes invalid when
      • the change immediately preceding the position is undone and then discarded due to another incoming change; or
      • the change immediately following the position is forgotten due to history size limit.