001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
028: * Microsystems, Inc. All Rights Reserved.
029: *
030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
039: * made subject to such option by the copyright holder.
040: */
041: package com.sun.rave.web.ui.renderer;
042:
043: import com.sun.rave.web.ui.component.Link; //import com.sun.rave.web.ui.component.util.Util;
044: import com.sun.rave.web.ui.util.RenderingUtilities;
045: import java.beans.Beans;
046:
047: import java.io.IOException;
048: import java.lang.NullPointerException;
049: import java.lang.StringBuffer;
050: import java.net.URL;
051: import java.util.Map;
052:
053: import javax.faces.component.UIComponent;
054:
055: import javax.faces.context.FacesContext;
056: import javax.faces.context.ResponseWriter;
057:
058: /**
059: * <p>This class is responsible for rendering the link component for the
060: * HTML Render Kit.</p> <p> The link component can be used as an Link</p>
061: */
062: public class LinkRenderer extends AbstractRenderer {
063:
064: // -------------------------------------------------------- Static Variables
065:
066: /**
067: * <p>The set of String pass-through attributes to be rendered.</p>
068: */
069: private static final String stringAttributes[] = { "charset",
070: "media", "rel", "type" }; //NOI18N
071:
072: // -------------------------------------------------------- Renderer Methods
073:
074: /**
075: * <p>Render the start of an Link (Link) tag.</p>
076: * @param context <code>FacesContext</code> for the current request
077: * @param component <code>UIComponent</code> to be rendered
078: * @param writer <code>ResponseWriter</code> to which the element
079: * start should be rendered
080: * @exception IOException if an input/output error occurs
081: */
082: protected void renderStart(FacesContext context,
083: UIComponent component, ResponseWriter writer)
084: throws IOException {
085: //intentionally empty
086: }
087:
088: /**
089: * <p>Render the attributes for an Link tag. The onclick attribute will contain
090: * extra javascript that will appropriately submit the form if the URL field is
091: * not set.</p>
092: * @param context <code>FacesContext</code> for the current request
093: * @param component <code>UIComponent</code> to be rendered
094: * @param writer <code>ResponseWriter</code> to which the element
095: * attributes should be rendered
096: * @exception IOException if an input/output error occurs
097: */
098: protected void renderAttributes(FacesContext context,
099: UIComponent component, ResponseWriter writer)
100: throws IOException {
101:
102: //intentionally empty
103: }
104:
105: /**
106: * <p>Close off the Link tag.</p>
107: * @param context <code>FacesContext</code> for the current request
108: * @param component <code>UIComponent</code> to be rendered
109: * @param writer <code>ResponseWriter</code> to which the element
110: * end should be rendered
111: * @exception IOException if an input/output error occurs
112: */
113: protected void renderEnd(FacesContext context,
114: UIComponent component, ResponseWriter writer)
115: throws IOException {
116: // End the appropriate element
117:
118: Link link = (Link) component;
119:
120: if (!RenderingUtilities.isPortlet(context)) {
121: writer.startElement("link", link);
122: addCoreAttributes(context, component, writer, null);
123: addStringAttributes(context, component, writer,
124: stringAttributes);
125: String lang = link.getUrlLang();
126: if (null != lang) {
127: writer.writeAttribute("hreflang", lang, "lang"); //NOI18N
128: }
129: // the URL is the tough thing because it needs to be encoded:
130:
131: String url = link.getUrl();
132:
133: if (url != null) {
134: writer.writeAttribute("href", //NOI18N
135: context.getApplication().getViewHandler()
136: .getResourceURL(context, url), "url"); //NOI18N
137: }
138:
139: writer.endElement("link"); //NOI18N
140: writer.write("\n"); //NOI18N
141: }
142:
143: }
144:
145: // --------------------------------------------------------- Private Methods
146:
147: }
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