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Java > Open Source Codes > nextapp > echo2 > app > Window


1 /*
2  * This file is part of the Echo Web Application Framework (hereinafter "Echo").
3  * Copyright (C) 2002-2005 NextApp, Inc.
4  *
5  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
6  *
7  * The contents of this file are subject to the Mozilla Public License Version
8  * 1.1 (the "License"); you may not use this file except in compliance with
9  * the License. You may obtain a copy of the License at
10  * http://www.mozilla.org/MPL/
11  *
12  * Software distributed under the License is distributed on an "AS IS" basis,
13  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
14  * for the specific language governing rights and limitations under the
15  * License.
16  *
17  * Alternatively, the contents of this file may be used under the terms of
18  * either the GNU General Public License Version 2 or later (the "GPL"), or
19  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
20  * in which case the provisions of the GPL or the LGPL are applicable instead
21  * of those above. If you wish to allow use of your version of this file only
22  * under the terms of either the GPL or the LGPL, and not to allow others to
23  * use your version of this file under the terms of the MPL, indicate your
24  * decision by deleting the provisions above and replace them with the notice
25  * and other provisions required by the GPL or the LGPL. If you do not delete
26  * the provisions above, a recipient may use your version of this file under
27  * the terms of any one of the MPL, the GPL or the LGPL.
28  */
29
30 package nextapp.echo2.app;
31
32 /**
33  * A top-level window.
34  */
35 public class Window extends Component {
36     
37     public static final String JavaDoc PROPERTY_TITLE = "title";
38     
39     /**
40      * Creates a new window.
41      */
42     public Window() {
43         super();
44         add(new ContentPane());
45     }
46     
47     /**
48      * Returns the content of the window.
49      *
50      * @return the content of the window
51      */
52     public ContentPane getContent() {
53         if (getComponentCount() == 0) {
54             return null;
55         } else {
56             return (ContentPane) getComponent(0);
57         }
58     }
59     
60     /**
61      * Returns the window title.
62      *
63      * @return the window title
64      */
65     public String JavaDoc getTitle() {
66         return (String JavaDoc) getProperty(PROPERTY_TITLE);
67     }
68     
69     /**
70      * @see nextapp.echo2.app.Component#isValidChild(nextapp.echo2.app.Component)
71      */
72     public boolean isValidChild(Component component) {
73         return getComponentCount() == 0 && component instanceof ContentPane;
74     }
75     
76     /**
77      * Reject all parents (<code>Window</code> may only be used as a
78      * top-level component).
79      *
80      * @see nextapp.echo2.app.Component#isValidParent(nextapp.echo2.app.Component)
81      */
82     public boolean isValidParent(Component parent) {
83         return false;
84     }
85     
86     /**
87      * Sets the content of the window.
88      *
89      * @param newValue the new window content
90      */
91     public void setContent(ContentPane newValue) {
92         removeAll();
93         add(newValue);
94     }
95     
96     /**
97      * Sets the window title.
98      *
99      * @param newValue the new window title
100      */
101     public void setTitle(String JavaDoc newValue) {
102         setProperty(PROPERTY_TITLE, newValue);
103     }
104 }
105
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