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Java > Open Source Codes > nextapp > echo2 > webrender > BaseHtmlDocument


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.webrender;
31
32 import java.util.Properties JavaDoc;
33 import javax.xml.transform.OutputKeys JavaDoc;
34 import org.w3c.dom.Document JavaDoc;
35 import org.w3c.dom.Element JavaDoc;
36
37 import nextapp.echo2.webrender.output.HtmlDocument;
38
39 /**
40  * The initial document rendered when a user visits an application.
41  */
42 public class BaseHtmlDocument extends HtmlDocument {
43
44     /**
45      * <code>OutputProperties</code> used for XML transformation.
46      */
47     private static final Properties JavaDoc OUTPUT_PROPERTIES = new Properties JavaDoc();
48     static {
49         // The XML declaration is omitted as Internet Explorer 6 will operate in quirks mode if it is present.
50 OUTPUT_PROPERTIES.setProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
51         
52         OUTPUT_PROPERTIES.setProperty(OutputKeys.DOCTYPE_PUBLIC, XHTML_1_0_TRANSITIONAL_PUBLIC_ID);
53         OUTPUT_PROPERTIES.setProperty(OutputKeys.DOCTYPE_SYSTEM, XHTML_1_0_TRANSITIONAL_SYSTSEM_ID);
54     }
55     
56     private String JavaDoc contentId;
57     
58     /**
59      * Creates a new <code>BaseHtmlDocument</code>.
60      *
61      * @param contentId The desired id which will be used for the element to
62      * which content should be added, i.e., the FORM element.
63      */
64     public BaseHtmlDocument(String JavaDoc contentId) {
65         super(XHTML_1_0_TRANSITIONAL_PUBLIC_ID, XHTML_1_0_TRANSITIONAL_SYSTSEM_ID, XHTML_1_0_NAMESPACE_URI);
66         setOutputProperties(OUTPUT_PROPERTIES);
67         this.contentId = contentId;
68         Document JavaDoc document = getDocument();
69         
70         Element JavaDoc styleElement = document.createElement("style");
71         styleElement.setAttribute("type", "text/css");
72         styleElement.appendChild(document.createTextNode(" "));
73         getHeadElement().appendChild(styleElement);
74         
75         Element JavaDoc formElement = document.createElement("form");
76         formElement.setAttribute("style", "padding:0px;margin:0px;");
77         formElement.setAttribute("action", "#");
78         formElement.setAttribute("id", contentId);
79         formElement.setAttribute("onsubmit", "return false;");
80
81         Element JavaDoc loadingDiv = document.createElement("div");
82         loadingDiv.setAttribute("id", "loadstatus");
83         loadingDiv.appendChild(document.createTextNode("//"));
84         formElement.appendChild(loadingDiv);
85         
86         getBodyElement().appendChild(formElement);
87     }
88     
89     /**
90      * Retrieves the element of the document to which content should be added,
91      * i.e., the FORM element.
92      *
93      * @return the element to which content should be added.
94      */
95     public Element JavaDoc getContentElement() {
96         return getDocument().getElementById(contentId);
97     }
98 }
99
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