org.apache.myfaces.renderkit.html.ext.HtmlMessageRenderer Maven / Gradle / Ivy
/*
* 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.text.MessageFormat;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import javax.faces.application.FacesMessage;
import javax.faces.component.NamingContainer;
import javax.faces.component.UIColumn;
import javax.faces.component.UIComponent;
import javax.faces.component.ValueHolder;
import javax.faces.component.html.HtmlOutputLabel;
import javax.faces.component.html.HtmlOutputText;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.myfaces.component.html.ext.HtmlMessage;
import org.apache.myfaces.component.html.ext.HtmlMessages;
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.HtmlMessageRendererBase;
/**
* @JSFRenderer
* renderKitId = "HTML_BASIC"
* family = "javax.faces.Message"
* type = "org.apache.myfaces.Message"
*
* @author Manfred Geiler (latest modification by $Author: lu4242 $)
* @version $Revision: 940144 $ $Date: 2010-05-01 20:39:32 -0500 (Sat, 01 May 2010) $
*/
public class HtmlMessageRenderer
extends HtmlMessageRendererBase
{
private static final Log log = LogFactory.getLog(HtmlMessageRenderer.class);
private static final String OUTPUT_LABEL_MAP = HtmlMessageRenderer.class.getName() + ".OUTPUT_LABEL_MAP";
public void encodeEnd(FacesContext facesContext, UIComponent component)
throws IOException
{
super.encodeEnd(facesContext, component); //check for NP
renderMessage(facesContext, component);
if (component instanceof HtmlMessage
&& ((HtmlMessage)component).getForceSpan())
{
String forAttr = getFor(component);
HtmlMessage htmlMessage = (HtmlMessage) component;
UIComponent forComponent = component.findComponent(forAttr);
if (forComponent != null)
{
String forCompclientId = forComponent.getClientId(facesContext);
ResponseWriter writer = facesContext.getResponseWriter();
writer.startElement(HTML.SPAN_ELEM, null);
writer.writeAttribute(HTML.ID_ATTR, forCompclientId + "_msgFor", null);
if(htmlMessage.getStyleClass()!=null)
writer.writeAttribute(HTML.CLASS_ATTR,htmlMessage.getStyleClass(),null);
if(htmlMessage.getStyle()!=null)
writer.writeAttribute(HTML.STYLE_ATTR,htmlMessage.getStyle(),null);
writer.endElement(HTML.SPAN_ELEM);
}
}
}
protected String getSummary(FacesContext facesContext,
UIComponent message,
FacesMessage facesMessage,
String msgClientId)
{
String msgSummary = facesMessage.getSummary();
if (msgSummary == null) return null;
String inputLabel = null;
if (msgClientId != null) inputLabel = findInputLabel(facesContext, msgClientId);
if (inputLabel == null) inputLabel = "";
if(((message instanceof HtmlMessages && ((HtmlMessages) message).isReplaceIdWithLabel()) ||
(message instanceof HtmlMessage && ((HtmlMessage) message).isReplaceIdWithLabel()))&&
inputLabel.length()!=0)
msgSummary = msgSummary.replaceAll(findInputId(facesContext, msgClientId),inputLabel);
String summaryFormat;
if (message instanceof HtmlMessage)
{
summaryFormat = ((HtmlMessage)message).getSummaryFormat();
}
else
{
summaryFormat = (String)message.getAttributes().get("summaryFormat");
}
if (summaryFormat == null) return msgSummary;
MessageFormat format = new MessageFormat(summaryFormat, facesContext.getViewRoot().getLocale());
return format.format(new Object[] {msgSummary, inputLabel});
}
protected String getDetail(FacesContext facesContext,
UIComponent message,
FacesMessage facesMessage,
String msgClientId)
{
String msgDetail = facesMessage.getDetail();
if (msgDetail == null) return null;
String inputLabel = null;
if (msgClientId != null) inputLabel = findInputLabel(facesContext, msgClientId);
if (inputLabel == null) inputLabel = "";
if(((message instanceof HtmlMessages && ((HtmlMessages) message).isReplaceIdWithLabel()) ||
(message instanceof HtmlMessage && ((HtmlMessage) message).isReplaceIdWithLabel()))&&
inputLabel.length()!=0)
msgDetail = msgDetail.replaceAll(findInputId(facesContext, msgClientId),inputLabel);
String detailFormat;
if (message instanceof HtmlMessage)
{
detailFormat = ((HtmlMessage)message).getDetailFormat();
}
else
{
detailFormat = (String)message.getAttributes().get("detailFormat");
}
if (detailFormat == null) return msgDetail;
MessageFormat format = new MessageFormat(detailFormat, facesContext.getViewRoot().getLocale());
return format.format(new Object[] {msgDetail, inputLabel});
}
public static String findInputLabel(FacesContext facesContext, String inputClientId)
{
Map outputLabelMap = getOutputLabelMap(facesContext);
MessageLabelInfo info = ((MessageLabelInfo)outputLabelMap.get(inputClientId));
if(info == null)
{
UIComponent comp = facesContext.getViewRoot().findComponent(inputClientId);
UIComponent parent=comp;
while(parent != null && !((parent=parent.getParent())instanceof UIColumn));
if(parent != null)
{
UIColumn column = (UIColumn) parent;
if(column.getHeader()!=null)
{
UIComponent header = column.getHeader();
return getComponentText(facesContext, header);
}
}
}
return info==null?null:info.getText(facesContext);
}
public static String findInputId(FacesContext facesContext, String inputClientId)
{
Map outputLabelMap = getOutputLabelMap(facesContext);
MessageLabelInfo info = ((MessageLabelInfo)outputLabelMap.get(inputClientId));
UIComponent comp = null;
if(info == null)
{
comp = facesContext.getViewRoot().findComponent(inputClientId);
}
else
{
comp = info.getForComponent();
}
if ( comp == null ) return null;
if ( inputClientId.contains(NamingContainer.SEPARATOR_CHAR + "") ) {
// Full client id is being used
//
return comp.getClientId(facesContext);
}
else {
// Id is being used (or client id is one level deep, which means it doesn't matter)
//
return comp.getId();
}
}
/**
* @param facesContext
* @return a Map that reversely maps clientIds of components to their
* corresponding OutputLabel component
*/
@SuppressWarnings("unchecked")
private static Map getOutputLabelMap(FacesContext facesContext)
{
Map map = (Map) facesContext.getExternalContext().getRequestMap().get(OUTPUT_LABEL_MAP);
if (map == null)
{
map = new HashMap();
createOutputLabelMap(facesContext, facesContext.getViewRoot(), map);
facesContext.getExternalContext().getRequestMap().put(OUTPUT_LABEL_MAP, map);
}
return map;
}
private static void createOutputLabelMap(FacesContext facesContext,
UIComponent root,
Map map)
{
for (Iterator it = root.getFacetsAndChildren(); it.hasNext(); )
{
UIComponent child = (UIComponent)it.next();
if (child instanceof HtmlOutputLabel)
{
String forAttr = ((HtmlOutputLabel)child).getFor();
if (forAttr != null)
{
UIComponent input = child.findComponent(forAttr);
if (input == null)
{
log.warn("Unable to find component '" + forAttr + "' (calling findComponent on component '" + child.getClientId(facesContext) + "')");
}
else
{
if (child.getValueExpression("value") == null)
{
// If the child uses a ValueExpression, do not evaluate the text
// right now. When getText(FacesContext) is called, do it there.
map.put(input.getClientId(facesContext),
new MessageDefferedLabelInfo(
input, child));
}
else
{
map.put(input.getClientId(facesContext),
new MessageTextLabelInfo(
input,getComponentText(facesContext, (HtmlOutputLabel)child)));
}
}
}
}
else
{
createOutputLabelMap(facesContext, child, map);
}
}
}
private static String getComponentText(FacesContext facesContext, UIComponent component)
{
String text = null;
if(component instanceof ValueHolder)
{
text= RendererUtils.getStringValue(facesContext, component);
}
if (text == null || text.length() < 1)
{
StringBuffer buf = new StringBuffer();
List li = component.getChildren();
for (int i = 0; i < li.size(); i++)
{
UIComponent child = (UIComponent) li.get(i);
if(child instanceof HtmlOutputText)
{
String str = RendererUtils.getStringValue(facesContext, child);
if(str!=null)
buf.append(str);
}
}
text = buf.toString();
}
return text;
}
public static interface MessageLabelInfo
{
public UIComponent getForComponent();
public String getText(FacesContext context);
}
public final static class MessageTextLabelInfo implements MessageLabelInfo
{
private final UIComponent _forComponent;
private final String _text;
public MessageTextLabelInfo(final UIComponent forComponent, final String text)
{
_forComponent = forComponent;
_text = text;
}
public UIComponent getForComponent()
{
return _forComponent;
}
public String getText(FacesContext context)
{
return _text;
}
}
public final static class MessageDefferedLabelInfo implements MessageLabelInfo
{
private final UIComponent _forComponent;
private final UIComponent _labelComponent;
private String _text;
public MessageDefferedLabelInfo(final UIComponent forComponent, final UIComponent labelComponent)
{
_forComponent = forComponent;
_labelComponent = labelComponent;
}
public UIComponent getForComponent()
{
return _forComponent;
}
public String getText(FacesContext context)
{
if (_text == null)
{
_text = getComponentText(context, (HtmlOutputLabel)_labelComponent);
}
return _text;
}
}
}
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