001: /*
002: * ====================================================================
003: * JAFFA - Java Application Framework For All
004: *
005: * Copyright (C) 2002 JAFFA Development Group
006: *
007: * This library is free software; you can redistribute it and/or
008: * modify it under the terms of the GNU Lesser General Public
009: * License as published by the Free Software Foundation; either
010: * version 2.1 of the License, or (at your option) any later version.
011: *
012: * This library is distributed in the hope that it will be useful,
013: * but WITHOUT ANY WARRANTY; without even the implied warranty of
014: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015: * Lesser General Public License for more details.
016: *
017: * You should have received a copy of the GNU Lesser General Public
018: * License along with this library; if not, write to the Free Software
019: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020: *
021: * Redistribution and use of this software and associated documentation ("Software"),
022: * with or without modification, are permitted provided that the following conditions are met:
023: * 1. Redistributions of source code must retain copyright statements and notices.
024: * Redistributions must also contain a copy of this document.
025: * 2. Redistributions in binary form must reproduce the above copyright notice,
026: * this list of conditions and the following disclaimer in the documentation
027: * and/or other materials provided with the distribution.
028: * 3. The name "JAFFA" must not be used to endorse or promote products derived from
029: * this Software without prior written permission. For written permission,
030: * please contact mail to: jaffagroup@yahoo.com.
031: * 4. Products derived from this Software may not be called "JAFFA" nor may "JAFFA"
032: * appear in their names without prior written permission.
033: * 5. Due credit should be given to the JAFFA Project (http://jaffa.sourceforge.net).
034: *
035: * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
036: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
037: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
038: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
039: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
040: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
041: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
042: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
043: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
044: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
045: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
046: * SUCH DAMAGE.
047: * ====================================================================
048: */
049:
050: package org.jaffa.presentation.portlet.widgets.model;
051:
052: import org.jaffa.util.Node;
053: import java.util.*;
054: import org.apache.log4j.*;
055:
056: /** Model for the Tree widget.
057: */
058: public class TreeModel extends WidgetModel {
059: private static Logger log = Logger.getLogger(TreeModel.class);
060:
061: /** Constant for the attribute node type.*/
062: public static final String ATTRIBUTE_NODE_TYPE = "nodetype";
063:
064: private Node m_node = null;
065: private ArrayList expandedNodes = null;
066: private boolean allExpanded = false;
067: private boolean noneExpanded = false;
068:
069: /** Sets a node to be the root node.
070: * @param node node to be made root.
071: */
072: public void setRootNode(Node node) {
073: m_node = node;
074: m_node.makeRoot();
075: }
076:
077: /** Returns the root node.
078: * @return the root node.
079: */
080: public Node getRootNode() {
081: return m_node;
082: }
083:
084: /** Returns a node if it exists based on the passed ID string.
085: * @param id The node id.
086: * @return a node if it exists based on the passed ID string.
087: */
088: public Node getNode(String id) {
089: if (m_node != null) {
090: return m_node.getFromFamilyById(id);
091: } else {
092: return null;
093: }
094: }
095:
096: /** Sets an attribute on the node to expanded ="true" for caching.
097: * @param num A List of String objects, each String containing the node id.
098: */
099: public void setExpanded(ArrayList num) {
100: //m_expandedNodes.clear();
101: allExpanded = true;
102: noneExpanded = false;
103: expandedNodes.clear();
104: for (Iterator i = num.iterator(); i.hasNext();) {
105: String value = (String) i.next();
106: Node node = getNode(value);
107: expandedNodes.add(node);
108: }
109: // setModelChanged(true);
110: }
111:
112: /** Returns a true if the input Node is expanded.
113: * @param n The Node.
114: * @return a true if the input Node is expanded.
115: */
116: public boolean isExpanded(Node n) {
117: if (allExpanded) {
118: return true;
119: } else {
120: if (noneExpanded) {
121: return false;
122: } else {
123: if (expandedNodes != null) {
124: return expandedNodes.contains(n);
125: } else {
126: return false;
127: }
128: }
129: }
130: }
131:
132: /** Sets all the nodes to be expanded.
133: */
134: public void setAllExpanded() {
135: allExpanded = true;
136: noneExpanded = false;
137: }
138:
139: /** Sets all the nodes to be non-expanded.
140: */
141: public void setNoneExpanded() {
142: noneExpanded = true;
143: allExpanded = false;
144: }
145:
146: }
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