UndoAction

All Known Implementing Classes:

MoMLUndoEntry, UndoActionsList, UndoActionTest, UndoLayoutAction
```
public interface UndoAction
```
This interface represents an undo or redo action that is maintained on an undo/redo stack, such as that maintained by UndoStackAttribute.

Since:

Ptolemy II 3.1

Version:

$Id$

Author:

Edward A. Lee

See Also:

UndoStackAttribute

Pt.AcceptedRating:

Green (hyzheng)

Pt.ProposedRating:

Green (eal)

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  void execute()
  Execute the undo or redo action.

- Method Detail
  - execute
```
void execute()
      throws java.lang.Exception
```
    Execute the undo or redo action.
    
    Throws:
    
    java.lang.Exception - If something goes wrong.