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Java > Open Source Codes > org > objectstyle > cayenne > dataview > DOListModel


1 /* ====================================================================
2 *
3 * The ObjectStyle Group Software License, version 1.1
4 * ObjectStyle Group - http://objectstyle.org/
5 *
6 * Copyright (c) 2002-2005, Andrei (Andrus) Adamchik and individual authors
7 * of the software. All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
19 * distribution.
20 *
21 * 3. The end-user documentation included with the redistribution, if any,
22 * must include the following acknowlegement:
23 * "This product includes software developed by independent contributors
24 * and hosted on ObjectStyle Group web site (http://objectstyle.org/)."
25 * Alternately, this acknowlegement may appear in the software itself,
26 * if and wherever such third-party acknowlegements normally appear.
27 *
28 * 4. The names "ObjectStyle Group" and "Cayenne" must not be used to endorse
29 * or promote products derived from this software without prior written
30 * permission. For written permission, email
31 * "andrus at objectstyle dot org".
32 *
33 * 5. Products derived from this software may not be called "ObjectStyle"
34 * or "Cayenne", nor may "ObjectStyle" or "Cayenne" appear in their
35 * names without prior written permission.
36 *
37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
40 * DISCLAIMED. IN NO EVENT SHALL THE OBJECTSTYLE GROUP OR
41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
43 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
44 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
45 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
46 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
47 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
48 * SUCH DAMAGE.
49 * ====================================================================
50 *
51 * This software consists of voluntary contributions made by many
52 * individuals and hosted on ObjectStyle Group web site. For more
53 * information on the ObjectStyle Group, please see
54 * <http://objectstyle.org/>.
55 */

56 package org.objectstyle.cayenne.dataview;
57
58 import javax.swing.AbstractListModel JavaDoc;
59
60 import org.objectstyle.cayenne.DataObject;
61
62 /**
63  * A Swing ListModel wrapping {@link DataObjectList}.
64  *
65  * @since 1.1
66  */

67 public class DOListModel extends AbstractListModel JavaDoc implements DataObjectChangeListener,
68         FieldValueChangeListener {
69
70     protected ObjEntityViewField viewField;
71     protected DataObjectList dataObjects = new DataObjectList(1);
72
73     public DOListModel() {
74     }
75
76     public void setViewField(ObjEntityViewField field) {
77         if (this.viewField != null) {
78             this.viewField.getOwner().getOwner().removeFieldValueChangeListener(this);
79         }
80         this.viewField = field;
81         viewField.getOwner().getOwner().addFieldValueChangeListener(this);
82         fireContentsChanged(this, 0, getSize());
83     }
84
85     public void setDataObjects(DataObjectList dataObjects) {
86         this.dataObjects.removeDataObjectChangeListener(this);
87         this.dataObjects = dataObjects;
88         this.dataObjects.addDataObjectChangeListener(this);
89         fireContentsChanged(this, 0, getSize());
90     }
91
92     public int getSize() {
93         return dataObjects.size();
94     }
95
96     public DataObject getDataObject(int index) {
97         return (DataObject) dataObjects.get(index);
98     }
99
100     public Object JavaDoc getElementAt(int index) {
101         if (viewField == null)
102             return getDataObject(index);
103         return viewField.getValue(getDataObject(index));
104     }
105
106     public void dataChanged(DataObjectChangeEvent event) {
107         if (event.isMultiObjectChange()) {
108             fireContentsChanged(this, 0, getSize());
109             return;
110         }
111         int affectedRow = event.getAffectedDataObjectIndex();
112         switch (event.getId()) {
113             case DataObjectChangeEvent.DATAOBJECT_ADDED:
114                 fireIntervalAdded(this, affectedRow, affectedRow);
115                 break;
116             case DataObjectChangeEvent.DATAOBJECT_REMOVED:
117                 fireIntervalRemoved(this, affectedRow, affectedRow);
118                 break;
119             case DataObjectChangeEvent.DATAOBJECT_CHANGED:
120                 fireContentsChanged(this, affectedRow, affectedRow);
121                 break;
122             default:
123                 fireContentsChanged(this, 0, getSize());
124         }
125     }
126
127     public ObjEntityViewField getViewField() {
128         return viewField;
129     }
130
131     public DataObjectList getDataObjects() {
132         return dataObjects;
133     }
134
135     public void fieldValueChanged(FieldValueChangeEvent event) {
136         if (viewField != null && viewField.isSameObjAttribute(event.getField())) {
137             int index = dataObjects.indexOf(event.getModifiedObject());
138             if (index >= 0)
139                 fireContentsChanged(this, index, index);
140         }
141     }
142 }
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