/*  Copyright (C) 2003-2011 JabRef contributors.
    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.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package net.sf.jabref.undo;

import javax.swing.undo.AbstractUndoableEdit;

import net.sf.jabref.BasePanel;
import net.sf.jabref.BibtexDatabase;
import net.sf.jabref.BibtexEntry;
import net.sf.jabref.Util;

/**
 * This class represents the removal of an entry. The constructor needs
 * references to the database, the entry, and the map of open entry editors.
 * The latter to be able to close the entry's editor if it is opened after
 * an undo, and the removal is then undone.
 */
public class UndoableRemoveEntry extends AbstractUndoableEdit {

    private BibtexDatabase base;
    private BibtexEntry entry;
    private BasePanel panel;

    public UndoableRemoveEntry(BibtexDatabase base, BibtexEntry entry,
			       BasePanel panel) {
	this.base = base;
	this.entry = entry;
	this.panel = panel;
    }

    public String getUndoPresentationName() {
	return "Undo: remove entry";
    }

    public String getRedoPresentationName() {
	return "Redo: remove entry";
    }

    public void undo() {
	super.undo();

	// Revert the change.
	try {
	    String id = Util.createNeutralId();
	    entry.setId(id);
	    base.insertEntry(entry);
	} catch (Throwable ex) {
          ex.printStackTrace();
	}
    }

    public void redo() {
	super.redo();

	// Redo the change.
	try {
	    base.removeEntry(entry.getId());
	    // If the entry has an editor currently open, we must close it.
	    panel.ensureNotShowing(entry);
	} catch (Throwable ex) {
          ex.printStackTrace();
	}
    }



}