ca.sqlpower.architect.olap.undo
Class OLAPUndoManager

java.lang.Object
  javax.swing.undo.AbstractUndoableEdit
      javax.swing.undo.CompoundEdit
          javax.swing.undo.UndoManager
              ca.sqlpower.architect.olap.undo.OLAPUndoManager

All Implemented Interfaces:

NotifyingUndoManager, java.io.Serializable, java.util.EventListener, javax.swing.event.UndoableEditListener, javax.swing.undo.UndoableEdit

public class OLAPUndoManager
extends javax.swing.undo.UndoManager
implements NotifyingUndoManager

A customized undo manager that works well with the OLAP business model and GUI.

See Also:

Serialized Form

Field Summary

Fields inherited from class javax.swing.undo.CompoundEdit

edits

Fields inherited from class javax.swing.undo.AbstractUndoableEdit

RedoName, UndoName

Constructor Summary

OLAPUndoManager(OLAPObject root)

Method Summary

void	addChangeListener(javax.swing.event.ChangeListener l) Adds the given change listener, which will be notified with a ChangeEvent every time this undo manager's state has changed.
boolean	addEdit(javax.swing.undo.UndoableEdit anEdit)
void	endCompoundEdit()
boolean	isAtRememberedPosition()
protected void	redoTo(javax.swing.undo.UndoableEdit edit)
void	rememberPosition() Marks this undo manager's current position.
void	removeChangeListener(javax.swing.event.ChangeListener l) Removes the given change listener, so it will no longer be notified when this manager's state changes.
void	startCompoundEdit(java.lang.String presentationName)
protected void	trimEdits(int from, int to) This override is just a hook for the "remembered position" system.
protected void	undoTo(javax.swing.undo.UndoableEdit edit)

Methods inherited from class javax.swing.undo.UndoManager

canRedo, canUndo, canUndoOrRedo, discardAllEdits, editToBeRedone, editToBeUndone, end, getLimit, getRedoPresentationName, getUndoOrRedoPresentationName, getUndoPresentationName, redo, setLimit, toString, trimForLimit, undo, undoableEditHappened, undoOrRedo

Methods inherited from class javax.swing.undo.CompoundEdit

die, getPresentationName, isInProgress, isSignificant, lastEdit

Methods inherited from class javax.swing.undo.AbstractUndoableEdit

replaceEdit

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface ca.sqlpower.architect.undo.NotifyingUndoManager

canRedo, canUndo, getRedoPresentationName, getUndoOrRedoPresentationName, getUndoPresentationName, redo, undo

Constructor Detail

OLAPUndoManager

public OLAPUndoManager(OLAPObject root)

Method Detail

rememberPosition

public void rememberPosition()

Marks this undo manager's current position.

isAtRememberedPosition

public boolean isAtRememberedPosition()

trimEdits

protected void trimEdits(int from,
                         int to)

This override is just a hook for the "remembered position" system. If we are trimming off the first edit, and our remembered undoable edit was null (which only happens when the remembered position is before the first edit), we "unremember" the position because it is now impossible to get back there. If we didn't do this, if the user undoes back to the beginning of the undo vector, we would report that we're at the remembered position, but it would be a lie.

Overrides:

trimEdits in class javax.swing.undo.UndoManager

undoTo

protected void undoTo(javax.swing.undo.UndoableEdit edit)
               throws javax.swing.undo.CannotUndoException

Overrides:

undoTo in class javax.swing.undo.UndoManager

Throws:

javax.swing.undo.CannotUndoException

redoTo

protected void redoTo(javax.swing.undo.UndoableEdit edit)
               throws javax.swing.undo.CannotRedoException

Overrides:

redoTo in class javax.swing.undo.UndoManager

Throws:

javax.swing.undo.CannotRedoException

addEdit

public boolean addEdit(javax.swing.undo.UndoableEdit anEdit)

Specified by:

addEdit in interface javax.swing.undo.UndoableEdit

Overrides:

addEdit in class javax.swing.undo.UndoManager

startCompoundEdit

public void startCompoundEdit(java.lang.String presentationName)

endCompoundEdit

public void endCompoundEdit()

addChangeListener

public void addChangeListener(javax.swing.event.ChangeListener l)

Description copied from interface: NotifyingUndoManager

Adds the given change listener, which will be notified with a ChangeEvent every time this undo manager's state has changed. The manager's state generally changes when an undoable edit is added, or an undo or redo operation is performed.

Specified by:

addChangeListener in interface NotifyingUndoManager

removeChangeListener

public void removeChangeListener(javax.swing.event.ChangeListener l)

Description copied from interface: NotifyingUndoManager

Removes the given change listener, so it will no longer be notified when this manager's state changes.

Specified by:

removeChangeListener in interface NotifyingUndoManager