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.Meta;
044: import com.sun.rave.web.ui.component.util.Util;
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 meta component for the
060: * HTML Render Kit.</p> <p> The meta component can be used as an Meta</p>
061: */
062: public class MetaRenderer 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[] = { "name",
070: "content", "scheme" }; //NOI18N
071:
072: // -------------------------------------------------------- Renderer Methods
073:
074: /**
075: * <p>Render the start of an Meta (Meta) 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:
086: //intentionally left blank
087:
088: }
089:
090: /**
091: * <p>Render the attributes for an Meta tag. The onclick attribute will contain
092: * extra javascript that will appropriately submit the form if the URL field is
093: * not set.</p>
094: * @param context <code>FacesContext</code> for the current request
095: * @param component <code>UIComponent</code> to be rendered
096: * @param writer <code>ResponseWriter</code> to which the element
097: * attributes should be rendered
098: * @exception IOException if an input/output error occurs
099: */
100: protected void renderAttributes(FacesContext context,
101: UIComponent component, ResponseWriter writer)
102: throws IOException {
103: //intentionally left blank
104: }
105:
106: /**
107: * <p>Close off the Meta tag.</p>
108: * @param context <code>FacesContext</code> for the current request
109: * @param component <code>UIComponent</code> to be rendered
110: * @param writer <code>ResponseWriter</code> to which the element
111: * end should be rendered
112: * @exception IOException if an input/output error occurs
113: */
114: protected void renderEnd(FacesContext context,
115: UIComponent component, ResponseWriter writer)
116: throws IOException {
117: // End the appropriate element
118:
119: Meta meta = (Meta) component;
120:
121: writer.startElement("meta", meta);
122: addCoreAttributes(context, component, writer, null);
123:
124: String header = meta.getHttpEquiv();
125: if (header != null) {
126: writer.writeAttribute("http-equiv", header, null);
127: }
128: addStringAttributes(context, component, writer,
129: stringAttributes);
130: writer.endElement("meta"); //NOI18N
131: writer.write("\n"); //NOI18N
132:
133: }
134:
135: // --------------------------------------------------------- Private Methods
136:
137: }
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