public void undoableEditHappened(UndoableEditEvent e) {
UndoManager mgr = Undo.getCurrentUndoMgr();
if (mgr != null && mgr.canRedo()) {
setToolTipText(mgr.getRedoPresentationName());
setEnabled(true);
} else {
setToolTipText(tipStr);
setEnabled(false);
}
}
public void actionPerformed(ActionEvent e) {
UndoManager undo = menu.getCurScoreObject().manager;
try {
undo.undo();
menu.setCurSaveFlag(false);
p.repaint();
} catch (CannotUndoException ex) {
// System.out.println("Unable to undo: " + ex);
// ex.printStackTrace();
}
}
public void actionPerformed(ActionEvent e) {
UndoManager mgr = Undo.getLastUndoMgr();
if (mgr != null && mgr.canRedo()) mgr.redo();
}