Package org.jgraph.graph

Class GraphUndoManager

java.lang.Object
javax.swing.undo.AbstractUndoableEdit
javax.swing.undo.CompoundEdit
javax.swing.undo.UndoManager
org.jgraph.graph.GraphUndoManager
All Implemented Interfaces:
Serializable, EventListener, UndoableEditListener, UndoableEdit
public class GraphUndoManager extends UndoManager
An UndoManager that may be shared among multiple GraphLayoutCache's.
See Also:

  • Constructor Details

    • GraphUndoManager

      public GraphUndoManager()

  • Method Details

    • canUndo

      public boolean canUndo(Object source)
      Overridden to preserve usual semantics: returns true if an undo operation would be successful now for the given view, false otherwise

    • canRedo

      public boolean canRedo(Object source)
      Overridden to preserve usual semantics: returns true if a redo operation would be successful now for the given view, false otherwise

    • undo

      public void undo(Object source)
      If this UndoManager is inProgress, undo the last significant UndoableEdit wrt to source, and all insignificant edits back to it. Updates indexOfNextAdd accordingly.

      If not inProgress, indexOfNextAdd is ignored and super's routine is called.

      See Also:

    • editToBeUndone

      protected UndoableEdit editToBeUndone(Object source)

    • nextEditToBeUndone

      protected UndoableEdit nextEditToBeUndone(UndoableEdit current)
      Returns the the next significant edit wrt to current to be undone if undo is called. May return null.

    • redo

      public void redo(Object source)
      If this UndoManager is inProgress, redoes the last significant UndoableEdit with respect to source or after, and all insignificant edits up to it. Updates indexOfNextAdd accordingly.

      If not inProgress, indexOfNextAdd is ignored and super's routine is called.

    • editToBeRedone

      protected UndoableEdit editToBeRedone(Object source)

    • nextEditToBeRedone

      protected UndoableEdit nextEditToBeRedone(UndoableEdit current)
      Returns the the next significant edit wrt to current to be redone if redo is called. May return null.