Package dk.gtz.graphedit.util

Class ObservableTreeUndoSystem

java.lang.Object
dk.gtz.graphedit.util.ObservableTreeUndoSystem
All Implemented Interfaces:
IObservableUndoSystem, dk.yalibs.yaundo.IUndoSystem
public class ObservableTreeUndoSystem extends Object implements IObservableUndoSystem
An implementation of the IObservableUndoSystem interface that uses a tree structure to store the undo history.

  • Constructor Details

  • Method Details

    • getHistory

      public Iterable<dk.yalibs.yaundo.Undoable> getHistory()
      Specified by:
      getHistory in interface dk.yalibs.yaundo.IUndoSystem

    • getCurrentAction

      public Optional<dk.yalibs.yaundo.Undoable> getCurrentAction()
      Specified by:
      getCurrentAction in interface dk.yalibs.yaundo.IUndoSystem

    • push

      public void push(dk.yalibs.yaundo.Undoable action)
      Specified by:
      push in interface dk.yalibs.yaundo.IUndoSystem

    • undo

      public void undo()
      Specified by:
      undo in interface dk.yalibs.yaundo.IUndoSystem

    • redo

      public void redo()
      Specified by:
      redo in interface dk.yalibs.yaundo.IUndoSystem

    • getCurrentUndoableProperty

      public javafx.beans.value.ObservableValue<dk.yalibs.yaundo.Undoable> getCurrentUndoableProperty()
      Description copied from interface: IObservableUndoSystem
      Get the current Undoable observable value
      Specified by:
      getCurrentUndoableProperty in interface IObservableUndoSystem
      Returns:
      The current undoable

    • addListener

      public void addListener(javafx.beans.value.ChangeListener<dk.yalibs.yaundo.Undoable> listener)
      Description copied from interface: IObservableUndoSystem
      Add a listener for when the current Undoable changes
      Specified by:
      addListener in interface IObservableUndoSystem
      Parameters:
      listener - The listener to add

    • removeListener

      public void removeListener(javafx.beans.value.ChangeListener<dk.yalibs.yaundo.Undoable> listener)
      Description copied from interface: IObservableUndoSystem
      Remove a listener for when the current Undoable changes
      Specified by:
      removeListener in interface IObservableUndoSystem
      Parameters:
      listener - The listener to remove

    • getStringRepresentation

      public List<ObservableUndoable> getStringRepresentation()
      Description copied from interface: IObservableUndoSystem
      Get a list of ObservableUndoable that represent the undo history, which contains a string representation for pretty printing.
      Specified by:
      getStringRepresentation in interface IObservableUndoSystem
      Returns:
      A list of ObservableUndoable

    • gotoAction

      public void gotoAction(dk.yalibs.yaundo.Undoable action)
      Description copied from interface: IObservableUndoSystem
      Go to a specific Undoable action. Note that this may trigger many change events.
      Specified by:
      gotoAction in interface IObservableUndoSystem
      Parameters:
      action - The action to go to