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JSF components and utilities that can be used with any JSF implementation.
This library is based on the JSF1.1 version of Tomahawk, but with minor source code and build
changes to take advantage of JSF1.2 features. A JSF1.2 implementation is required to use this
version of the Tomahawk library.
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.myfaces.renderkit.html.ext;
import java.io.IOException;
import java.util.Map;
import javax.faces.component.UIComponent;
import javax.faces.component.UIInput;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.apache.myfaces.component.UserRoleUtils;
import org.apache.myfaces.component.html.ext.HtmlInputText;
import org.apache.myfaces.shared_tomahawk.renderkit.JSFAttr;
import org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils;
import org.apache.myfaces.shared_tomahawk.renderkit.html.HTML;
import org.apache.myfaces.shared_tomahawk.renderkit.html.HtmlRendererUtils;
import org.apache.myfaces.shared_tomahawk.renderkit.html.HtmlTextRendererBase;
import org.apache.myfaces.shared_tomahawk.renderkit.html.util.JavascriptUtils;
/**
* @JSFRenderer
* renderKitId = "HTML_BASIC"
* family = "javax.faces.Input"
* type = "org.apache.myfaces.Text"
*
* @JSFRenderer
* renderKitId = "HTML_BASIC"
* family = "javax.faces.Output"
* type = "org.apache.myfaces.Text"
*
* @author Manfred Geiler (latest modification by $Author: lu4242 $)
* @version $Revision: 659874 $ $Date: 2008-05-24 15:59:15 -0500 (Sat, 24 May 2008) $
*/
public class HtmlTextRenderer
extends HtmlTextRendererBase
{
private static final String ONCHANGE_PREFIX = "onChange_";
private static final String HIDDEN_SUFFIX = "_hidden";
//private static final Log log = LogFactory.getLog(HtmlTextRenderer.class);
protected boolean isDisabled(FacesContext facesContext, UIComponent uiComponent)
{
if (!UserRoleUtils.isEnabledOnUserRole(uiComponent))
{
return true;
}
else
{
return super.isDisabled(facesContext, uiComponent);
}
}
/**
*
*/
protected boolean isDisabledOnClientSide(FacesContext facesContext, UIComponent component)
{
if (component instanceof HtmlInputText)
{
return ((HtmlInputText)component).isDisabledOnClientSide();
}
return false;
}
public void encodeEnd(FacesContext facesContext, UIComponent component)
throws IOException
{
if (HtmlRendererUtils.isDisplayValueOnly(component))
{
renderInputValueOnly(facesContext, component);
}
else
{
renderNormal(facesContext, component);
}
}
protected void renderInput(FacesContext facesContext, UIComponent component) throws IOException
{
if (!isDisabledOnClientSide(facesContext, component) || isDisabled(facesContext, component))
{
super.renderInput(facesContext, component);
return;
}
//render the input component as if it was disabled
ResponseWriter writer = facesContext.getResponseWriter();
String clientId = component.getClientId(facesContext);
String value = RendererUtils.getStringValue(facesContext, component);
writer.startElement(HTML.INPUT_ELEM, component);
writer.writeAttribute(HTML.ID_ATTR, clientId, null);
writer.writeAttribute(HTML.NAME_ATTR, clientId, null);
writer.writeAttribute(HTML.TYPE_ATTR, HTML.INPUT_TYPE_TEXT, null);
if (value != null)
{
writer.writeAttribute(HTML.VALUE_ATTR, value, JSFAttr.VALUE_ATTR);
}
HtmlRendererUtils.renderHTMLAttributes(writer, component, HTML.INPUT_PASSTHROUGH_ATTRIBUTES_WITHOUT_DISABLED);
//render as disabled on the client side
writer.writeAttribute(HTML.DISABLED_ATTR, Boolean.TRUE, null);
//render the JS function that will change the hidden input field's value when his changes
writer.writeAttribute(HTML.ONCHANGE_ATTR, getOnChangeFunctionName(clientId)+"();", null);
writer.endElement(HTML.INPUT_ELEM);
//render the hidden input field that will hold this component's value
renderHiddenInput(facesContext, (UIInput)component);
}
/**
*
*/
protected void renderHiddenInput(FacesContext facesContext, UIComponent component) throws IOException
{
ResponseWriter writer = facesContext.getResponseWriter();
String disabledInputClientId = component.getClientId(facesContext);
HtmlRendererUtils.writePrettyLineSeparator(facesContext);
writer.startElement(HTML.SCRIPT_ELEM, null);
writer.writeAttribute(HTML.SCRIPT_TYPE_ATTR, HTML.SCRIPT_TYPE_TEXT_JAVASCRIPT, null);
writer.writeText(createOnChangeListenerJS(disabledInputClientId), null);
writer.endElement(HTML.SCRIPT_ELEM);
HtmlRendererUtils.writePrettyLineSeparator(facesContext);
writer.startElement(HTML.INPUT_ELEM, null);
writer.writeAttribute(HTML.ID_ATTR, disabledInputClientId + HIDDEN_SUFFIX, null);
writer.writeAttribute(HTML.NAME_ATTR, disabledInputClientId + HIDDEN_SUFFIX, null);
writer.writeAttribute(HTML.VALUE_ATTR, RendererUtils.getStringValue(facesContext, component), null);
writer.writeAttribute(HTML.TYPE_ATTR, HTML.INPUT_TYPE_HIDDEN, null);
writer.endElement(HTML.INPUT_ELEM);
HtmlRendererUtils.writePrettyLineSeparator(facesContext);
}
protected void renderInputValueOnly(FacesContext facesContext, UIComponent component)
throws IOException
{
HtmlRendererUtils.renderDisplayValueOnly(facesContext,
(UIInput) component);
}
protected void renderNormal(FacesContext facesContext, UIComponent component)
throws IOException
{
super.encodeEnd(facesContext, component);
}
/**
*
*/
protected String getOnChangeFunctionName(String inputDisabledClientId)
{
StringBuffer buf = new StringBuffer();
buf.append(ONCHANGE_PREFIX);
buf.append(JavascriptUtils.getValidJavascriptName(inputDisabledClientId, true));
return buf.toString();
}
/**
*
*/
protected String createOnChangeListenerJS(String inputDisabledClientId)
{
StringBuffer script = new StringBuffer();
script.append("function ");
script.append(getOnChangeFunctionName(inputDisabledClientId));
script.append("() {\n");
script.append("var hiddenInput = document.getElementById(\"").append(inputDisabledClientId + HIDDEN_SUFFIX).append("\");\n");
script.append("var disabledInput = document.getElementById(\"").append(inputDisabledClientId).append("\");\n");
script.append("hiddenInput.value=disabledInput.value;\n");
script.append("}\n");
return script.toString();
}
public void decode(FacesContext facesContext, UIComponent component)
{
if (isDisabledOnClientSide(facesContext, component) && !isDisabled(facesContext, component))
{
//in this case we don't need to check the request parameters validity,
//the submitted value comes from the hidden input field
Map paramValuesMap = facesContext.getExternalContext().getRequestParameterMap();
Object reqValue = paramValuesMap.get(component.getClientId(facesContext) + HIDDEN_SUFFIX);
((UIInput)component).setSubmittedValue(reqValue);
return;
}
super.decode(facesContext, component);
}
}