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// MessageRenderer.java
package com.sun.faces.renderkit.html_basic;
import java.io.IOException;
import java.util.Iterator;
import java.util.logging.Level;
import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.component.UIMessage;
import javax.faces.component.UIOutput;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import com.sun.faces.renderkit.RenderKitUtils;
/**
* <p><B>MessageRenderer</B> handles rendering for the Message<p>.
*
*/
public class MessageRenderer extends HtmlBasicRenderer {
private OutputMessageRenderer omRenderer = null;
// ------------------------------------------------------------ Constructors
public MessageRenderer() {
omRenderer = new OutputMessageRenderer();
}
// ---------------------------------------------------------- Public Methods
@Override
public void encodeBegin(FacesContext context, UIComponent component)
throws IOException {
rendererParamsNotNull(context, component);
if (component instanceof UIOutput) {
omRenderer.encodeBegin(context, component);
}
}
@Override
public void encodeChildren(FacesContext context, UIComponent component)
throws IOException {
rendererParamsNotNull(context, component);
if (component instanceof UIOutput) {
omRenderer.encodeChildren(context, component);
}
}
public void encodeEnd(FacesContext context, UIComponent component)
throws IOException {
rendererParamsNotNull(context, component);
if (component instanceof UIOutput) {
omRenderer.encodeEnd(context, component);
return;
}
if (!shouldEncode(component)) {
return;
}
// If id is user specified, we must render
boolean mustRender = shouldWriteIdAttribute(component);
ResponseWriter writer = context.getResponseWriter();
assert(writer != null);
UIMessage message = (UIMessage) component;
String clientId = message.getFor();
//"for" attribute required for Message. Should be taken care of
//by TLD in JSP case, but need to cover non-JSP case.
if (clientId == null) {
if (logger.isLoggable(Level.WARNING)) {
logger.warning("'for' attribute cannot be null");
}
return;
}
clientId = augmentIdReference(clientId, component);
Iterator messageIter = getMessageIter(context, clientId, component);
assert(messageIter != null);
if (!messageIter.hasNext()) {
if (mustRender) {
// no message to render, but must render anyway
writer.startElement("span", component);
writeIdAttributeIfNecessary(context, writer, component);
writer.endElement("span");
} // otherwise, return without rendering
return;
}
FacesMessage curMessage = (FacesMessage) messageIter.next();
if (curMessage.isRendered() && !message.isRedisplay()) {
return;
}
curMessage.rendered();
String severityStyle = null;
String severityStyleClass = null;
boolean showSummary = message.isShowSummary();
boolean showDetail = message.isShowDetail();
// make sure we have a non-null value for summary and
// detail.
String summary = (null != (summary = curMessage.getSummary())) ?
summary : "";
// Default to summary if we have no detail
String detail = (null != (detail = curMessage.getDetail())) ?
detail : summary;
if (curMessage.getSeverity() == FacesMessage.SEVERITY_INFO) {
severityStyle =
(String) component.getAttributes().get("infoStyle");
severityStyleClass = (String)
component.getAttributes().get("infoClass");
} else if (curMessage.getSeverity() == FacesMessage.SEVERITY_WARN) {
severityStyle =
(String) component.getAttributes().get("warnStyle");
severityStyleClass = (String)
component.getAttributes().get("warnClass");
} else if (curMessage.getSeverity() == FacesMessage.SEVERITY_ERROR) {
severityStyle =
(String) component.getAttributes().get("errorStyle");
severityStyleClass = (String)
component.getAttributes().get("errorClass");
} else if (curMessage.getSeverity() == FacesMessage.SEVERITY_FATAL) {
severityStyle =
(String) component.getAttributes().get("fatalStyle");
severityStyleClass = (String)
component.getAttributes().get("fatalClass");
}
String style = (String) component.getAttributes().get("style");
String styleClass = (String) component.getAttributes().get("styleClass");
String dir = (String) component.getAttributes().get("dir");
String lang = (String) component.getAttributes().get("lang");
String title = (String) component.getAttributes().get("title");
// if we have style and severityStyle
if ((style != null) && (severityStyle != null)) {
// severityStyle wins
style = severityStyle;
}
// if we have no style, but do have severityStyle
else if ((style == null) && (severityStyle != null)) {
// severityStyle wins
style = severityStyle;
}
// if we have styleClass and severityStyleClass
if ((styleClass != null) && (severityStyleClass != null)) {
// severityStyleClass wins
styleClass = severityStyleClass;
}
// if we have no styleClass, but do have severityStyleClass
else if ((styleClass == null) && (severityStyleClass != null)) {
// severityStyleClass wins
styleClass = severityStyleClass;
}
//Done intializing local variables. Move on to rendering.
boolean wroteSpan = false;
if (styleClass != null
|| style != null
|| dir != null
|| lang != null
|| title != null
|| mustRender) {
writer.startElement("span", component);
writeIdAttributeIfNecessary(context, writer, component);
wroteSpan = true;
if (style != null) {
writer.writeAttribute("style", style, "style");
}
if (styleClass != null) {
writer.writeAttribute("class", styleClass, "styleClass");
}
if (dir != null) {
writer.writeAttribute("dir", dir, "dir");
}
if (lang != null) {
writer.writeAttribute(RenderKitUtils.prefixAttribute("lang", writer),
lang,
"lang");
}
if (title != null) {
writer.writeAttribute("title", title, "title");
}
}
Object val = component.getAttributes().get("tooltip");
boolean isTooltip = (val != null) && Boolean.valueOf(val.toString());
boolean wroteTooltip = false;
if (showSummary && showDetail && isTooltip) {
if (!wroteSpan) {
writer.startElement("span", component);
}
if (title == null || title.length() == 0) {
writer.writeAttribute("title", summary, "title");
}
writer.flush();
writer.writeText("\t", component, null);
wroteTooltip = true;
} else if (wroteSpan) {
writer.flush();
}
if (!wroteTooltip && showSummary) {
writer.writeText("\t", component, null);
writer.writeText(summary, component, null);
writer.writeText(" ", component, null);
}
if (showDetail) {
writer.writeText(detail, component, null);
}
if (wroteSpan || wroteTooltip) {
writer.endElement("span");
}
}
} // end of class MessageRenderer