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
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
028: * Microsystems, Inc. All Rights Reserved.
029: *
030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
039: * made subject to such option by the copyright holder.
040: */
041: package org.netbeans.tax.traversal;
042:
043: import org.netbeans.tax.TreeNode;
044: import org.netbeans.tax.InvalidStateException;
045:
046: /**
047: *
048: * @author Libor Kramolis
049: * @version 0.1
050: */
051: public final class TreeNodeIterator {
052: /** Root node of this iterator. */
053: private TreeNode root;
054:
055: /** Determines which node types are presented. */
056: private int whatToShow;
057:
058: /** Filter to screen nodes. */
059: private TreeNodeFilter filter;
060:
061: /** State of iterator. */
062: private boolean valid;
063:
064: /** Creates new TreeNodeIterator.
065: * @param node root node
066: * @param wTS what to show
067: * @param f used filter
068: */
069: public TreeNodeIterator(TreeNode node, int wTS, TreeNodeFilter f) {
070: root = node;
071: whatToShow = wTS;
072: filter = f;
073:
074: valid = true;
075: }
076:
077: /**
078: */
079: public TreeNode getRoot() {
080: return root;
081: }
082:
083: /**
084: */
085: public int getWhatToShow() {
086: return whatToShow;
087: }
088:
089: /**
090: */
091: public TreeNodeFilter getFilter() {
092: return filter;
093: }
094:
095: /**
096: */
097: public TreeNode nextNode() throws InvalidStateException {
098: if (!!!valid) {
099: throw new InvalidStateException(Util.THIS
100: .getString("EXC_TreeNodeIterator.nextNode"));
101: }
102:
103: if (Util.THIS.isLoggable()) /* then */
104: Util.THIS.debug("[PENDING]: TreeNodeIterator.nextNode ()"); // NOI18N
105: return null;
106: }
107:
108: /**
109: */
110: public TreeNode previousNode() throws InvalidStateException {
111: if (!!!valid) {
112: throw new InvalidStateException(Util.THIS
113: .getString("EXC_TreeNodeIterator.previousNode"));
114: }
115:
116: if (Util.THIS.isLoggable()) /* then */
117: Util.THIS.debug("[PENDING]: TreeNodeIterator.nextNode ()"); // NOI18N
118: return null;
119: }
120:
121: /**
122: */
123: public void detach() {
124: valid = false;
125: }
126:
127: }
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