/*
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 java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import javax.swing.undo.AbstractUndoableEdit;
import net.sf.jabref.BibtexEntry;
import net.sf.jabref.Globals;
/**
* @author jzieren
*
*/
public class UndoableChangeAssignment extends AbstractUndoableEdit {
private final Set<BibtexEntry> m_previousAssignmentBackup;
private final Set<BibtexEntry> m_newAssignmentBackup;
/** The path to the edited node */
private int[] m_pathToNode = null;
/** The root of the global groups tree */
private GroupTreeNode m_groupsRootHandle = null;
/**
* Constructor for use in a group itself, where the enclosing node is
* unknown. The node must be set using setEditedNode() before this instance
* may be used.
*
* @param previousAssignment
* @param currentAssignment
*/
public UndoableChangeAssignment(Set<BibtexEntry> previousAssignment,
Set<BibtexEntry> currentAssignment) {
m_previousAssignmentBackup = new HashSet<BibtexEntry>(previousAssignment);
m_newAssignmentBackup = new HashSet<BibtexEntry>(currentAssignment);
}
public UndoableChangeAssignment(Set<BibtexEntry> previousAssignment,
Set<BibtexEntry> currentAssignment, GroupTreeNode node) {
this(previousAssignment, currentAssignment);
setEditedNode(node);
}
/**
* Sets the node of the group that was edited. If this node was not
* specified at construction time, this method has to be called before this
* instance may be used.
*
* @param node
* The node whose assignments were edited.
*/
public void setEditedNode(GroupTreeNode node) {
m_groupsRootHandle = (GroupTreeNode) node.getRoot();
m_pathToNode = node.getIndexedPath();
}
public String getUndoPresentationName() {
return Globals.lang("Undo") + ": "
+ Globals.lang("change assignment of entries");
}
public String getRedoPresentationName() {
return Globals.lang("Redo") + ": "
+ Globals.lang("change assignment of entries");
}
public void undo() {
super.undo();
ExplicitGroup group = (ExplicitGroup) m_groupsRootHandle.getChildAt(
m_pathToNode).getGroup();
group.clearAssignments();
for (Iterator<BibtexEntry> it = m_previousAssignmentBackup.iterator(); it.hasNext();)
group.addEntry(it.next());
}
public void redo() {
super.redo();
ExplicitGroup group = (ExplicitGroup) m_groupsRootHandle.getChildAt(
m_pathToNode).getGroup();
group.clearAssignments();
for (Iterator<BibtexEntry> it = m_newAssignmentBackup.iterator(); it.hasNext();)
group.addEntry(it.next());
}
}