/*
Copyright (C) 2003 Morten O. Alver, Nizar N. Batada
All programs in this directory and
subdirectories are published under the GNU General Public License as
described below.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at
your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA
Further information about the GNU GPL is available at:
http://www.gnu.org/copyleft/gpl.ja.html
*/
package net.sf.jabref.groups;
import javax.swing.undo.AbstractUndoableEdit;
import net.sf.jabref.Globals;
class UndoableResetGroups extends AbstractUndoableEdit {
/** A backup of the groups before the modification */
private final GroupTreeNode m_groupsBackup;
/** A handle to the global groups root node */
private final GroupTreeNode m_groupsRootHandle;
private final GroupSelector m_groupSelector;
private boolean m_revalidate = true;
public UndoableResetGroups(GroupSelector groupSelector,
GroupTreeNode groupsRoot) {
this.m_groupsBackup = groupsRoot.deepCopy();
this.m_groupsRootHandle = groupsRoot;
this.m_groupSelector = groupSelector;
}
public String getUndoPresentationName() {
return Globals.lang("Undo") + ": "
+ Globals.lang("clear all groups");
}
public String getRedoPresentationName() {
return Globals.lang("Redo") + ": "
+ Globals.lang("clear all groups");
}
public void undo() {
super.undo();
// keep root handle, but restore everything else from backup
m_groupsRootHandle.removeAllChildren();
m_groupsRootHandle.setGroup(m_groupsBackup.getGroup().deepCopy());
for (int i = 0; i < m_groupsBackup.getChildCount(); ++i)
m_groupsRootHandle.add(((GroupTreeNode) m_groupsBackup
.getChildAt(i)).deepCopy());
if (m_revalidate)
m_groupSelector.revalidateGroups();
}
public void redo() {
super.redo();
m_groupsRootHandle.removeAllChildren();
m_groupsRootHandle.setGroup(new AllEntriesGroup());
if (m_revalidate)
m_groupSelector.revalidateGroups();
}
/**
* Call this method to decide if the group list should be immediately
* revalidated by this operation. Default is true.
*/
public void setRevalidate(boolean revalidate) {
m_revalidate = revalidate;
}
}