Method Detail

• add

  void add(Change change)

  Add the given change to the history.

  Parameters:

  change - the change

• isRecordingChanges

  boolean isRecordingChanges()

  Whether or not the ChangeSet is recording changes.

  Returns:

  whether or not the ChangeSet is set to record changes

• setRecordChanges

  void setRecordChanges(boolean recordChanges)

  Tell the change set whether to record changes or not.

  Parameters:

  recordChanges - whether to record changes or not

• backwardIterator

  java.util.Iterator<Change> backwardIterator()

  Get a backward directed iterator that can be used for undo.

  The iterator may return the changes out of order, as long as the final result after all changes have been applied is correct.

  Returns:

  a undo directed iterator

• forwardIterator

  java.util.Iterator<Change> forwardIterator()

  Get a forward directed iterator that can be used for redo.

  The iterator may return the changes out of order, as long as the final result after all changes have been applied is correct.

  Returns:

  a forward directed iterator

• size

  int size()

  Get the number of stored changes.

  Returns:

  the change count