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/*
* $Id: CheckboxRenderer.java,v 1.77 2006/01/11 15:28:07 rlubke Exp $
*
*/
/*
* The contents of this file are subject to the terms
* of the Common Development and Distribution License
* (the License). You may not use this file except in
* compliance with the License.
*
* You can obtain a copy of the License at
* https://javaserverfaces.dev.java.net/CDDL.html or
* legal/CDDLv1.0.txt.
* See the License for the specific language governing
* permission and limitations under the License.
*
* When distributing Covered Code, include this CDDL
* Header Notice in each file and include the License file
* at legal/CDDLv1.0.txt.
* If applicable, add the following below the CDDL Header,
* with the fields enclosed by brackets [] replaced by
* your own identifying information:
* "Portions Copyrighted [year] [name of copyright owner]"
*
* [Name of File] [ver.__] [Date]
*
* Copyright 2005 Sun Microsystems Inc. All Rights Reserved
*/
// CheckboxRenderer.java
package com.sun.faces.renderkit.html_basic;
import java.io.IOException;
import java.util.Map;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.faces.convert.ConverterException;
import com.sun.faces.util.Util;
import com.sun.faces.util.MessageUtils;
import com.sun.faces.renderkit.RenderKitUtils;
import java.util.logging.Level;
/**
* CheckboxRenderer is a class that renders the current value of
* UISelectBoolean as a checkbox.
*/
public class CheckboxRenderer extends HtmlBasicInputRenderer {
//
// Protected Constants
//
//
// Class Variables
//
//
// Instance Variables
//
// Attribute Instance Variables
// Relationship Instance Variables
//
// Constructors and Initializers
//
public CheckboxRenderer() {
super();
}
//
// Class methods
//
//
// General Methods
//
//
// Methods From Renderer
//
public void decode(FacesContext context, UIComponent component) {
if (context == null || component == null) {
throw new NullPointerException(MessageUtils.getExceptionMessageString(
MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID));
}
if (logger.isLoggable(Level.FINER)) {
logger.log(Level.FINER,
"Begin decoding component " + component.getId());
}
// If the checkbox disabled, nothing would be sent in the
// request even if the checkbox is checked. So do not change the
// value of the checkbox, if it is disabled since its state
// cannot be changed.
if (Util.componentIsDisabledOrReadonly(component)) {
if (logger.isLoggable(Level.FINE)) {
logger.fine("No decoding necessary since the component " +
component.getId() + " is disabled");
}
return;
}
String clientId = component.getClientId(context);
assert (clientId != null);
// Convert the new value
Map requestParameterMap = context.getExternalContext()
.getRequestParameterMap();
String newValue = requestParameterMap.get(clientId);
//if there was nothing sent in the request the checkbox wasn't checked
// if the checkbox is not disabled.
if (newValue == null) {
newValue = "false";
// Otherwise, if the checkbox was checked, the value
// coming in could be "on", "yes" or "true".
} else if (newValue.equalsIgnoreCase("on") ||
newValue.equalsIgnoreCase("yes") ||
newValue.equalsIgnoreCase("true")) {
newValue = "true";
}
setSubmittedValue(component, newValue);
if (logger.isLoggable(Level.FINE)) {
logger.fine("new value after decoding" + newValue);
}
if (logger.isLoggable(Level.FINER)) {
logger.log(Level.FINER,
"End decoding component " + component.getId());
}
}
public Object getConvertedValue(FacesContext context, UIComponent component,
Object submittedValue)
throws ConverterException {
String newValue = (String) submittedValue;
return Boolean.valueOf(newValue);
}
public void encodeBegin(FacesContext context, UIComponent component)
throws IOException {
if (context == null || component == null) {
throw new NullPointerException(
MessageUtils.getExceptionMessageString(MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID));
}
}
protected void getEndTextToRender(FacesContext context, UIComponent component,
String currentValue) throws IOException {
ResponseWriter writer = context.getResponseWriter();
assert (writer != null);
String styleClass = null;
writer.startElement("input", component);
writeIdAttributeIfNecessary(context, writer, component);
writer.writeAttribute("type", "checkbox", "type");
writer.writeAttribute("name", component.getClientId(context),
"clientId");
if ("true".equals(currentValue)) {
writer.writeAttribute("checked", Boolean.TRUE, "value");
}
if (null != (styleClass = (String)
component.getAttributes().get("styleClass"))) {
writer.writeAttribute("class", styleClass, "styleClass");
}
RenderKitUtils.renderPassThruAttributes(context, writer, component);
RenderKitUtils.renderXHTMLStyleBooleanAttributes(writer, component);
writer.endElement("input");
}
} // end of class CheckboxRenderer
