com.sun.faces.renderkit.html_basic.LinkRenderer Maven / Gradle / Ivy
/*
* Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
// LinkRenderer.java
package com.sun.faces.renderkit.html_basic;
import java.io.IOException;
import java.util.logging.Level;
import com.sun.faces.renderkit.Attribute;
import com.sun.faces.renderkit.AttributeManager;
import com.sun.faces.renderkit.RenderKitUtils;
import jakarta.faces.component.UIComponent;
import jakarta.faces.context.FacesContext;
import jakarta.faces.context.ResponseWriter;
/**
* LinkRenderer acts as superclass for CommandLinkRenderer and OutputLinkRenderer.
*/
public abstract class LinkRenderer extends HtmlBasicRenderer {
private static final Attribute[] ATTRIBUTES = AttributeManager.getAttributes(AttributeManager.Key.COMMANDLINK);
// ------------------------------------------------------- Protected Methods
protected abstract void renderAsActive(FacesContext context, UIComponent component) throws IOException;
protected void renderAsDisabled(FacesContext context, UIComponent component) throws IOException {
ResponseWriter writer = context.getResponseWriter();
assert writer != null;
writer.startElement("span", component);
String writtenId = writeIdAttributeIfNecessary(context, writer, component);
if (null != writtenId) {
writer.writeAttribute("name", writtenId, "name");
}
RenderKitUtils.renderPassThruAttributes(context, writer, component, ATTRIBUTES);
writeCommonLinkAttributes(writer, component);
writeValue(component, writer);
writer.flush();
}
protected void writeCommonLinkAttributes(ResponseWriter writer, UIComponent component) throws IOException {
// handle styleClass
String styleClass = (String) component.getAttributes().get("styleClass");
if (styleClass != null) {
writer.writeAttribute("class", styleClass, "styleClass");
}
}
protected void writeValue(UIComponent component, ResponseWriter writer) throws IOException {
Object v = getValue(component);
String label = null;
if (v != null) {
label = v.toString();
}
if (label != null && label.length() != 0) {
if (logger.isLoggable(Level.FINE)) {
logger.fine("Value to be rendered " + label);
}
writer.writeText(label, component, null);
}
}
} // end of class LinkRenderer