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Java > Open Source Codes > org > apache > jetspeed > modules > layouts > JetspeedLayout


1 /*
2  * Copyright 2000-2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16
17 package org.apache.jetspeed.modules.layouts;
18
19 //jetspeed stuff
20 import org.apache.jetspeed.capability.CapabilityMap;
21 import org.apache.jetspeed.services.logging.JetspeedLogFactoryService;
22 import org.apache.jetspeed.services.logging.JetspeedLogger;
23 import org.apache.jetspeed.services.rundata.JetspeedRunData;
24 import org.apache.jetspeed.services.resources.JetspeedResources;
25 import org.apache.jetspeed.util.MimeType;
26
27 // Turbine
28 import org.apache.turbine.modules.Layout;
29 import org.apache.turbine.modules.NavigationLoader;
30 import org.apache.turbine.modules.ScreenLoader;
31 import org.apache.turbine.util.RunData;
32
33 // ECS Classes
34 import org.apache.ecs.*;
35 import org.apache.ecs.wml.*;
36 import org.apache.ecs.xml.*;
37
38 /**
39  * Legacy jetspeed Layout used when handling ECS-only content.
40  * You should not use it if you want to use Velocity or JSPs.
41  *
42  * @deprecated This layout is not used anymore in Jetspeed
43  * @author <a HREF="mailto:burton@apache.org">Kevin A. Burton</a>
44  * @author <a HREF="mailto:raphael@apache.org">Raphaël Lute</a>
45  * @version $Id: JetspeedLayout.java,v 1.13 2004/02/23 02:59:30 jford Exp $
46  */
47 public class JetspeedLayout extends Layout
48 {
49
50     public static final String JavaDoc TOP =
51         JetspeedResources.getString( JetspeedResources.NAVIGATIONS_TOP_KEY );
52
53     public static final String JavaDoc BOTTOM =
54         JetspeedResources.getString( JetspeedResources.NAVIGATIONS_BOTTOM_KEY );
55
56     /**
57         The Doctype of WML
58     */
59     public static final Doctype WML_DOCTYPE =
60         new Doctype( "wml",
61                      "PUBLIC",
62                      "\"-//WAPFORUM//DTD WML 1.1//EN\"",
63                      "\"http://www.wapforum.org/DTD/wml_1.1.xml\"" );
64
65
66     /**
67      * Static initialization of the logger for this class
68      */
69     private static final JetspeedLogger logger = JetspeedLogFactoryService.getLogger(JetspeedLayout.class.getName());
70     
71     /**
72      *
73      */
74     public void doBuild( RunData data ) throws Exception JavaDoc
75     {
76
77         CapabilityMap cm = ((JetspeedRunData)data).getCapability();
78
79         MimeType mt = cm.getPreferredType();
80         data.setContentType( mt.getContentType() );
81         data.setCharSet( mt.getCharSet() );
82
83         if ( logger.isDebugEnabled() )
84         {
85             logger.debug( "Layout: Setting type to: " + mt );
86         }
87
88         if ( mt.equals( MimeType.WML ) ) {
89             // we should output WML code, use raw output
90 // don"t use navigations for WML
91
92             ElementContainer ec = new ElementContainer();
93             WML wml = new WML();
94             ec.addElement( new PI().setVersion( 1.0 ) );
95             ec.addElement( WML_DOCTYPE );
96             ec.addElement( wml );
97             wml.addElement( new Template().addElement( new Do( DoType.ACCEPT, "Back" ).addElement( new Prev() ) ) );
98
99             // Now execute the Screen portion of the page
100 ConcreteElement screen = ScreenLoader.getInstance().eval ( data, data.getScreen() );
101             if (screen != null)
102                 wml.addElement( screen );
103
104             // output everything on stdout
105 try {
106                 ec.output( data.getOut() );
107             } catch ( java.io.IOException JavaDoc e ) {
108                 logger.error("Exception", e);
109             } finally {
110                 ec = null;
111             }
112
113         } else {
114
115             // Execute the Top Navigation portion for this Layout
116 ConcreteElement topNav =
117                 NavigationLoader.getInstance().eval ( data, TOP );
118             if ( topNav != null)
119                 data.getPage().getBody().addElement( topNav );
120
121             // Now execute the Screen portion of the page
122 ConcreteElement screen = ScreenLoader.getInstance().eval ( data, data.getScreen() );
123             if (screen != null)
124                 data.getPage().getBody().addElement( screen );
125
126             // The screen should have attempted to set a Title
127 // for itself, otherwise, a default title is set
128 data.getPage().getTitle()
129                 .addElement( data.getTitle() );
130
131             // The screen should have attempted to set a Body bgcolor
132 // for itself, otherwise, a default body bgcolor is set
133 data.getPage().getBody()
134                 .setBgColor(HtmlColor.white);
135
136             // Execute the Bottom Navigation portion for this Layout
137 ConcreteElement bottomNav =
138             NavigationLoader.getInstance().eval ( data, BOTTOM );
139             if ( bottomNav != null)
140                 data.getPage().getBody().addElement( bottomNav );
141         }
142     }
143
144 }
145
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