weka.core

## Interface Undoable

- All Known Implementing Classes:
    ArffPanel, ArffSortedTableModel, ArffTableModel

      public interface Undoable

  Interface implemented by classes that support undo.
  Version:
    $Revision: 8034 $
  Author:
    FracPete (fracpete at waikato dot ac dot nz)

- - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `addUndoPoint()` adds an undo point to the undo history
    `boolean` | `canUndo()` returns whether an undo is possible, i.e.
    `void` | `clearUndo()` removes the undo history
    `boolean` | `isUndoEnabled()` returns whether undo support is enabled
    `void` | `setUndoEnabled(boolean enabled)` sets whether undo support is enabled
    `void` | `undo()` undoes the last action

- - ### Method Detail

    - #### isUndoEnabled

          boolean isUndoEnabled()

      returns whether undo support is enabled

    - #### setUndoEnabled

          void setUndoEnabled(boolean enabled)

      sets whether undo support is enabled

    - #### clearUndo

          void clearUndo()

      removes the undo history

    - #### canUndo

          boolean canUndo()

      returns whether an undo is possible, i.e. whether there are any undo points saved so far
      Returns:
        returns TRUE if there is an undo possible

    - #### undo

          void undo()

      undoes the last action

    - #### addUndoPoint

          void addUndoPoint()

      adds an undo point to the undo history