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Text File  |  2000-06-23  |  308b  |  27 lines
  1. // Undoing.cp
  2.  
  3. #ifndef Undoing_h
  4. #include "Undoing.h"
  5. #endif
  6.  
  7. bool Undoing::CanUndoOrRedo() const
  8.   {
  9.     return ActionIsDone()
  10.                 ? CanUndo()
  11.                 : CanRedo();
  12.   }
  13.  
  14. void Undoing::UndoOrRedo()
  15.   {
  16.     if ( ActionIsDone() )
  17.       {
  18.         if ( CanUndo() )
  19.             Undo();
  20.       }
  21.      else
  22.       {
  23.         if ( CanRedo() )
  24.             Redo();
  25.       }
  26.   }
  27.