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Java > Open Source Codes > org > objectstyle > cayenne > modeler > event > DisplayEvent


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.
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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.
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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,
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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.modeler.event;
57
58 import java.util.EventObject JavaDoc;
59
60 import org.objectstyle.cayenne.project.ProjectPath;
61
62 /**
63  * @author Andrei Adamchik
64  */
65 public class DisplayEvent extends EventObject JavaDoc {
66     protected boolean refired;
67     protected boolean changed;
68     protected ProjectPath path;
69
70     /**
71      * Constructor for DisplayEvent.
72      * @param source
73      */
74     public DisplayEvent(Object JavaDoc source) {
75         super(source);
76         refired = false;
77         changed = true;
78     }
79
80     /**
81      * Constructor for DisplayEvent.
82      * @param source
83      */
84     public DisplayEvent(Object JavaDoc source, ProjectPath path) {
85         super(source);
86         refired = false;
87         changed = true;
88         this.path = path;
89     }
90
91     public ProjectPath getPath() {
92         return path;
93     }
94
95     public void setPath(ProjectPath path) {
96         this.path = path;
97     }
98
99     /**
100     * Returns the last object in the path.
101     */
102     public Object JavaDoc getObject() {
103         return (path != null) ? path.getObject() : null;
104     }
105
106     /**
107      * Returns true if the path's last object has changed.
108      */
109     public boolean isChanged() {
110         return changed;
111     }
112
113     public void setChanged(boolean changed) {
114         this.changed = changed;
115     }
116
117     /**
118      * Returns true if the event has been refired
119      */
120     public boolean isRefired() {
121         return refired;
122     }
123
124     public void setRefired(boolean refired) {
125         this.refired = refired;
126     }
127
128     public boolean pointsTo(Class JavaDoc nodeClass) {
129         if (nodeClass == null) {
130             return false;
131         }
132
133         Object JavaDoc last = getObject();
134         return (last != null) ? last.getClass() == nodeClass : false;
135     }
136 }
137
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