01: package net.sourceforge.squirrel_sql.client.session.mainpanel.objecttree;
02:
03: /*
04: * Copyright (C) 2003 Colin Bell
05: * colbell@users.sourceforge.net
06: *
07: * This library is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU Lesser General Public
09: * License as published by the Free Software Foundation; either
10: * version 2.1 of the License, or (at your option) any later version.
11: *
12: * This library is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this library; if not, write to the Free Software
19: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20: */
21: import java.util.EventObject;
22:
23: /**
24: * This class is an event fired for object tree events.
25: *
26: * @author <A HREF="mailto:colbell@users.sourceforge.net">Colin Bell</A>
27: */
28: public class ObjectTreeListenerEvent extends EventObject {
29: /** The <CODE>ObjectTree</CODE> involved. */
30: private ObjectTree _tree;
31:
32: /**
33: * Ctor.
34: *
35: * @param source The <CODE>ObjectTree</CODE> that change has happened to.
36: *
37: * @throws IllegalArgumentException
38: * Thrown if <TT>null</TT>ObjectTree/TT> passed.
39: */
40: ObjectTreeListenerEvent(ObjectTree source) {
41: super (checkParams(source));
42: _tree = source;
43: }
44:
45: /**
46: * Return the <CODE>ObjectTree</CODE>.
47: */
48: public ObjectTree getObjectTree() {
49: return _tree;
50: }
51:
52: private static ObjectTree checkParams(ObjectTree source) {
53: if (source == null) {
54: throw new IllegalArgumentException("ObjectTree == null");
55: }
56: return source;
57: }
58: }
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