001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU General
007: * Public License Version 2 only ("GPL") or the Common Development and Distribution
008: * License("CDDL") (collectively, the "License"). You may not use this file except in
009: * compliance with the License. You can obtain a copy of the License at
010: * http://www.netbeans.org/cddl-gplv2.html or nbbuild/licenses/CDDL-GPL-2-CP. See the
011: * License for the specific language governing permissions and limitations under the
012: * License. When distributing the software, include this License Header Notice in
013: * each file and include the License file at nbbuild/licenses/CDDL-GPL-2-CP. Sun
014: * designates this particular file as subject to the "Classpath" exception as
015: * provided by Sun in the GPL Version 2 section of the License file that
016: * accompanied this code. If applicable, add the following below the License Header,
017: * with the fields enclosed by brackets [] replaced by your own identifying
018: * information: "Portions Copyrighted [year] [name of copyright owner]"
019: *
020: * Contributor(s):
021: *
022: * The Original Software is NetBeans. The Initial Developer of the Original Software
023: * is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun Microsystems, Inc. All
024: * Rights Reserved.
025: *
026: * If you wish your version of this file to be governed by only the CDDL or only the
027: * GPL Version 2, indicate your decision by adding "[Contributor] elects to include
028: * this software in this distribution under the [CDDL or GPL Version 2] license." If
029: * you do not indicate a single choice of license, a recipient has the option to
030: * distribute your version of this file under either the CDDL, the GPL Version 2 or
031: * to extend the choice of license to its licensees as provided above. However, if
032: * you add GPL Version 2 code and therefore, elected the GPL Version 2 license, then
033: * the option applies only if the new code is made subject to such option by the
034: * copyright holder.
035: */
036:
037: package org.netbeans.installer.sandbox.tree.nodes;
038:
039: import org.netbeans.installer.sandbox.tree.Node;
040:
041: /**
042: * @author Danila_Dugurov
043: *
044: */
045: public abstract class NodeBase<T> implements WritableNode<T> {
046:
047: protected String id;
048:
049: private T content;
050:
051: protected WritableNode parent;
052:
053: protected WritableNode next;
054:
055: protected WritableNode previous;
056:
057: private static int nextId;
058:
059: protected NodeBase() {
060: id = this .getClass().getName() + nextId++;
061: }
062:
063: public T getMeta() {
064: return content;
065: }
066:
067: public void setMeta(T meta) {
068: content = meta;
069: }
070:
071: public String id() {
072: return id;
073: }
074:
075: public Node getParent() {
076: return parent;
077: }
078:
079: public Node getNextSibling() {
080: return next;
081: }
082:
083: public Node getPrevSibling() {
084: return previous;
085: }
086:
087: protected void checkAgnation(Node child) {
088: if (child.getParent() != this )
089: throw new IllegalArgumentException("child node expected!");
090: }
091:
092: protected void checkCircles(Node child) {
093: Node tmp = this ;
094: while (tmp != null) {
095: if (tmp == child)
096: throw new IllegalArgumentException(
097: "circles were dertimined - operation was fobbided!");
098: tmp = tmp.getParent();
099: }
100: }
101:
102: public void setNextSibling(WritableNode next) {
103: this .next = next;
104: }
105:
106: public void setParent(WritableNode parent) {
107: this .parent = parent;
108: }
109:
110: public void setPrevSibling(WritableNode previous) {
111: this.previous = previous;
112: }
113: }
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