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This is the master POM file for Sun's Implementation of
the JSF 1.2 Specification.
The newest version!
/*
* $Id: ButtonRenderer.java,v 1.105.4.1 2007/08/30 19:26:18 rlubke Exp $
*/
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
* [name of copyright owner]"
*
* Contributor(s):
*
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
// ButtonRenderer.java
package com.sun.faces.renderkit.html_basic;
import java.io.IOException;
import java.util.Map;
import java.util.logging.Level;
import javax.faces.component.UICommand;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.faces.event.ActionEvent;
import com.sun.faces.renderkit.AttributeManager;
import com.sun.faces.renderkit.RenderKitUtils;
/**
* ButtonRenderer is a class that renders the current value of
* UICommand as a Button.
*/
public class ButtonRenderer extends HtmlBasicRenderer {
private static final String[] ATTRIBUTES =
AttributeManager.getAttributes(AttributeManager.Key.COMMANDBUTTON);
// ---------------------------------------------------------- Public Methods
@Override
public void decode(FacesContext context, UIComponent component) {
rendererParamsNotNull(context, component);
if (!shouldDecode(component)) {
return;
}
if (wasClicked(context, component) && !isReset(component)) {
component.queueEvent(new ActionEvent(component));
if (logger.isLoggable(Level.FINE)) {
logger.fine("This command resulted in form submission " +
" ActionEvent queued.");
logger.log(Level.FINE,
"End decoding component {0}",
component.getId());
}
}
}
@Override
public void encodeBegin(FacesContext context, UIComponent component)
throws IOException {
rendererParamsNotNull(context, component);
if (!shouldEncode(component)) {
return;
}
// Which button type (SUBMIT, RESET, or BUTTON) should we generate?
String type = getButtonType(component);
ResponseWriter writer = context.getResponseWriter();
assert(writer != null);
String label = "";
Object value = ((UICommand) component).getValue();
if (value != null) {
label = value.toString();
}
String imageSrc = (String) component.getAttributes().get("image");
writer.startElement("input", component);
writeIdAttributeIfNecessary(context, writer, component);
String clientId = component.getClientId(context);
if (imageSrc != null) {
writer.writeAttribute("type", "image", "type");
writer.writeURIAttribute("src", src(context, imageSrc), "image");
writer.writeAttribute("name", clientId, "clientId");
} else {
writer.writeAttribute("type", type, "type");
writer.writeAttribute("name", clientId, "clientId");
writer.writeAttribute("value", label, "value");
}
RenderKitUtils.renderPassThruAttributes(writer,
component,
ATTRIBUTES);
RenderKitUtils.renderXHTMLStyleBooleanAttributes(writer, component);
String styleClass = (String)
component.getAttributes().get("styleClass");
if (styleClass != null && styleClass.length() > 0) {
writer.writeAttribute("class", styleClass, "styleClass");
}
writer.endElement("input");
}
@Override
public void encodeEnd(FacesContext context, UIComponent component)
throws IOException {
rendererParamsNotNull(context, component);
}
// --------------------------------------------------------- Private Methods
/**
* @param context the FacesContext for the current request
* @param imageURI the base URI of the image to use for the button
* @return the encoded result for the base imageURI
*/
private static String src(FacesContext context, String imageURI) {
if (imageURI == null) {
return "";
}
String u = context.getApplication().getViewHandler()
.getResourceURL(context, imageURI);
return (context.getExternalContext().encodeResourceURL(u));
}
/**
* Determine if this component was activated on the client side.
*
* @param context the FacesContext for the current request
* @param component the component of interest
* @return true if this component was in fact activated,
* otherwise false
*/
private static boolean wasClicked(FacesContext context,
UIComponent component) {
// Was our command the one that caused this submission?
// we don' have to worry about getting the value from request parameter
// because we just need to know if this command caused the submission. We
// can get the command name by calling currentValue. This way we can
// get around the IE bug.
String clientId = component.getClientId(context);
Map requestParameterMap = context.getExternalContext()
.getRequestParameterMap();
if (requestParameterMap.get(clientId) == null) {
StringBuilder builder = new StringBuilder(clientId);
String xValue = builder.append(".x").toString();
builder.setLength(clientId.length());
String yValue = builder.append(".y").toString();
return (requestParameterMap.get(xValue) != null
&& requestParameterMap.get(yValue) != null);
}
return true;
}
/**
* @param component the component of interest
* @return true if the button represents a reset
* button, otherwise false
*/
private static boolean isReset(UIComponent component) {
return ("reset".equals(component.getAttributes().get("type")));
}
/**
* If the component's type attribute is null or not equal
* to reset or submit, default to
* submit.
* @param component the component of interest
* @return the type for this button
*/
private static String getButtonType(UIComponent component) {
String type = (String) component.getAttributes().get("type");
if (type == null || (!"reset".equals(type) && !"submit".equals(type))) {
type = "submit";
// This is needed in the decode method
component.getAttributes().put("type", type);
}
return type;
}
} // end of class ButtonRenderer