01: /*
02: * hgcommons 7
03: * Hammurapi Group Common Library
04: * Copyright (C) 2003 Hammurapi Group
05: *
06: * This program is free software; you can redistribute it and/or
07: * modify it under the terms of the GNU Lesser General Public
08: * License as published by the Free Software Foundation; either
09: * version 2 of the License, or (at your option) any later version.
10: *
11: * This program is distributed in the hope that it will be useful,
12: * but WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * Lesser General Public License for more details.
15: *
16: * You should have received a copy of the GNU Lesser General Public
17: * License along with this library; if not, write to the Free Software
18: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19: *
20: * URL: http://www.hammurapi.biz/hammurapi-biz/ef/xmenu/hammurapi-group/products/products/hgcommons/index.html
21: * e-Mail: support@hammurapi.biz
22: */
23: package biz.hammurapi.xml.dom;
24:
25: import org.w3c.dom.Node;
26: import org.w3c.dom.NodeList;
27:
28: import biz.hammurapi.util.PoliteVisitor;
29: import biz.hammurapi.util.Visitable;
30: import biz.hammurapi.util.Visitor;
31:
32: /**
33: * Navigates Visitor through DOM tree.
34: * @author Pavel Vlasov
35: * @version $Revision: 1.2 $
36: */
37: public class DomVisitable implements Visitable {
38: private Node node;
39:
40: public boolean accept(Visitor visitor) {
41: return accept(node, visitor);
42: }
43:
44: /**
45: * @param node
46: * @param visitor
47: * @return
48: */
49: private boolean accept(Node node, Visitor visitor) {
50: if (visitor.visit(node)) {
51: NodeList list = node.getChildNodes();
52: for (int i = 0, j = list.getLength(); i < j; i++) {
53: accept(list.item(i), visitor);
54: }
55: if (visitor instanceof PoliteVisitor) {
56: ((PoliteVisitor) visitor).leave(node);
57: }
58: return true;
59: }
60: return false;
61: }
62:
63: /**
64: * @param node
65: */
66: public DomVisitable(Node node) {
67: super();
68: this.node = node;
69: }
70: }
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