/*
* $Id$
* JBoss, Home of Professional Open Source
* Copyright 2010, Red Hat, Inc. and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.richfaces.renderkit;
import java.io.IOException;
import java.util.Iterator;
import java.util.Map;
import javax.faces.application.FacesMessage;
import javax.faces.application.FacesMessage.Severity;
import javax.faces.component.UIComponent;
import javax.faces.component.UIMessage;
import javax.faces.component.UIMessages;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.ajax4jsf.javascript.JSFunction;
import org.ajax4jsf.javascript.JSObject;
import org.richfaces.application.ServiceTracker;
import org.richfaces.component.AbstractMessage;
import org.richfaces.component.AbstractMessages;
import org.richfaces.javascript.JavaScriptService;
import org.richfaces.renderkit.util.RendererUtils;
import com.google.common.base.Predicate;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableMap.Builder;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterators;
import com.google.common.collect.Lists;
import com.google.common.collect.UnmodifiableIterator;
/**
* <p class="changed_added_4_0">
* </p>
*
* @author asmirnov@exadel.com
*
*/
public class MessageRendererBase extends RendererBase {
private static final ImmutableMap<Severity, SeverityAttributes> SEVERITY_MAP = ImmutableMap.of(FacesMessage.SEVERITY_INFO,
attrs("info", "inf"), FacesMessage.SEVERITY_WARN, attrs("warn", "wrn"), FacesMessage.SEVERITY_ERROR,
attrs("error", "err"), FacesMessage.SEVERITY_FATAL, attrs("fatal", "ftl"));
protected Iterator<MessageForRender> getMessages(FacesContext context, String forClientId, UIComponent component) {
Iterator<MessageForRender> msgIter;
if (forClientId != null) {
if (forClientId.length() != 0) {
UIComponent result = RendererUtils.getInstance().findComponentFor(component, forClientId);
if (result == null) {
msgIter = ImmutableSet.<MessageForRender>of().iterator();
} else {
String clientId = result.getClientId(context);
msgIter = getMessagesForId(context, clientId);
}
} else {
msgIter = getMessagesForId(context, null);
}
} else {
msgIter = ImmutableSet.<MessageForRender>of().iterator();
Iterator<String> clientIdsWithMessages = context.getClientIdsWithMessages();
while (clientIdsWithMessages.hasNext()) {
String clientId = (String) clientIdsWithMessages.next();
msgIter = Iterators.concat(msgIter, getMessagesForId(context, clientId));
}
}
return msgIter;
}
private Iterator<MessageForRender> getMessagesForId(FacesContext context, String clientId) {
Iterator<MessageForRender> msgIter;
msgIter = Iterators.transform(context.getMessages(clientId), new MessageTransformer(null == clientId ? "" : clientId));
return msgIter;
}
/**
* <p class="changed_added_4_0">
* TODO - make Generator aware of Iterator.
* </p>
*
* @param context
* @param component
*/
protected Iterable<MessageForRender> getVisibleMessages(FacesContext context, UIComponent component) {
String forId = getFor(component);
Iterator<MessageForRender> messages = getMessages(context, forId, component);
UnmodifiableIterator<MessageForRender> filteredMessages = Iterators.filter(messages,
getMessagesLevelFilter(context, component));
return Lists.newArrayList(filteredMessages);
}
private Predicate<MessageForRender> getMessagesLevelFilter(FacesContext context, UIComponent component) {
final Severity level = getLevel(component);
final boolean displayAll = isComponentMessages(component);
final boolean redisplay = Boolean.TRUE.equals(component.getAttributes().get("redisplay"));
Predicate<MessageForRender> predicate = new Predicate<MessageForRender>() {
private int count = 0;
public boolean apply(MessageForRender input) {
if (redisplay || !input.isRendered()) {
if (input.getSeverity().compareTo(level) >= 0) {
return displayAll || 0 == count++;
}
}
return false;
}
};
return predicate;
}
protected Severity getLevel(UIComponent component) {
Object levelName = component.getAttributes().get("level");
final Severity level = (Severity) (FacesMessage.VALUES_MAP.containsKey(levelName) ? FacesMessage.VALUES_MAP
.get(levelName) : FacesMessage.SEVERITY_INFO);
return level;
}
protected boolean isComponentMessage(UIComponent component) {
return component instanceof UIMessage;
}
protected boolean isComponentRichMessage(UIComponent component) {
return component instanceof AbstractMessage;
}
protected boolean isComponentMessages(UIComponent component) {
return component instanceof UIMessages;
}
protected boolean isComponentRichMessages(UIComponent component) {
return component instanceof AbstractMessages;
}
private String getFor(UIComponent component) {
if (isComponentMessages(component)) {
UIMessages messages = (UIMessages) component;
if (messages.isGlobalOnly()) {
return "";
} else {
return messages.getFor();
}
} else if (isComponentMessage(component)) {
UIMessage message = (UIMessage) component;
return message.getFor();
} else {
return (String) component.getAttributes().get("for");
}
}
protected void encodeMessage(FacesContext facesContext, UIComponent component, Object msg) throws IOException {
// TODO fix generator to properly detect iteration variable type
MessageForRender message = (MessageForRender) msg;
String summary = message.getSummary();
String detail = message.getDetail();
boolean showSummary = true;
boolean showDetail = false;
boolean isMessages = false;
if (isComponentMessage(component)) {
UIMessage uiMessage = (UIMessage) component;
showSummary = uiMessage.isShowSummary();
showDetail = uiMessage.isShowDetail();
} else if (isComponentMessages(component)) {
UIMessages uiMessages = (UIMessages) component;
showSummary = uiMessages.isShowSummary();
showDetail = uiMessages.isShowDetail();
isMessages = true;
}
boolean escape = true;
if (isComponentRichMessage(component)) {
AbstractMessage richMessage = (AbstractMessage) component;
escape = richMessage.isEscape();
}
if (isComponentRichMessages(component)) {
AbstractMessages richMessages = (AbstractMessages) component;
escape = richMessages.isEscape();
}
ResponseWriter responseWriter = facesContext.getResponseWriter();
// Message id
responseWriter.writeAttribute("id", component.getClientId() + ':' + message.getSourceId(), null);
// tooltip
boolean wroteTooltip = RendererUtils.getInstance().isBooleanAttribute(component, "tooltip");
if (wroteTooltip && !Strings.isNullOrEmpty(summary)) {
responseWriter.writeAttribute("title", summary, null);
}
if (!wroteTooltip && showSummary) {
writeMessageLabel(responseWriter, summary, isMessages ? "rf-msgs-sum" : "rf-msg-sum", escape);
}
if (showDetail) {
writeMessageLabel(responseWriter, detail, isMessages ? "rf-msgs-det" : "rf-msg-det", escape);
}
message.rendered();
}
private void writeMessageLabel(ResponseWriter responseWriter, String label, String styleClass, boolean escape) throws IOException {
if (!Strings.isNullOrEmpty(label)) {
responseWriter.startElement("span", null);
responseWriter.writeAttribute("class", styleClass, null);
if (escape) {
responseWriter.writeText(label, null);
} else {
responseWriter.write(label);
}
responseWriter.endElement("span");
}
}
protected String getJSClassName() {
return "RichFaces.ui.Message";
}
protected void encodeScript(FacesContext facesContext, UIComponent component) throws IOException {
JavaScriptService javaScriptService = ServiceTracker.getService(JavaScriptService.class);
JSFunction messageObject = new JSObject(getJSClassName(), component.getClientId(facesContext));
Map<String, Object> attributes = component.getAttributes();
Builder<String, Object> parametersBuilder = ImmutableMap.builder();
String forId = (String) attributes.get("for");
RendererUtils rendererUtils = RendererUtils.getInstance();
if (!Strings.isNullOrEmpty(forId)) {
UIComponent target = rendererUtils.findComponentFor(component, forId);
if (null != target) {
parametersBuilder.put("forComponentId", target.getClientId(facesContext));
}
}
Severity level = getLevel(component);
if (FacesMessage.SEVERITY_INFO != level) {
parametersBuilder.put("level", level.getOrdinal());
}
if (!rendererUtils.isBooleanAttribute(component, "showSummary")) {
parametersBuilder.put("showSummary", false);
}
if (rendererUtils.isBooleanAttribute(component, "showDetail")) {
parametersBuilder.put("showDetail", true);
}
if (rendererUtils.isBooleanAttribute(component, "tooltip")) {
parametersBuilder.put("tooltip", true);
}
if (isComponentMessages(component) && rendererUtils.isBooleanAttribute(component, "globalOnly")) {
parametersBuilder.put("globalOnly", true);
}
if (isComponentMessages(component)) {
parametersBuilder.put("isMessages", true);
}
messageObject.addParameter(parametersBuilder.build());
// RendererUtils.getInstance().writeScript(facesContext, component, messageObject);
javaScriptService.addPageReadyScript(facesContext, messageObject);
}
protected String getMsgClass(FacesContext facesContext, UIComponent component, Object msg) throws IOException {
MessageForRender message = (MessageForRender) msg;
SeverityAttributes severityAttributes = SEVERITY_MAP.get(message.getSeverity());
boolean isMessages = (isComponentMessages(component));
String styleClass = buildSeverityAttribute(component, (isMessages ? severityAttributes.messagesSkinClass
: severityAttributes.messageSkinClass), severityAttributes.classAttribute, ' ');
return styleClass;
}
protected String getMsgStyle(FacesContext facesContext, UIComponent component, Object msg) throws IOException {
MessageForRender message = (MessageForRender) msg;
SeverityAttributes severityAttributes = SEVERITY_MAP.get(message.getSeverity());
String style = buildSeverityAttribute(component, null, severityAttributes.styleAttribute, ';');
return style;
}
private String buildSeverityAttribute(UIComponent component, String skinValue, String attrName, char delimiter) {
StringBuilder style = new StringBuilder();
if (!Strings.isNullOrEmpty(skinValue)) {
style.append(skinValue);
}
Object componentStyle = component.getAttributes().get(attrName);
if (null != componentStyle && !Strings.isNullOrEmpty(componentStyle.toString())) {
if (!Strings.isNullOrEmpty(skinValue)) {
style.append(delimiter);
}
style.append(componentStyle);
}
return style.toString();
}
static SeverityAttributes attrs(String attPrefix, String skinSuffix) {
SeverityAttributes attrs = new SeverityAttributes(attPrefix, skinSuffix);
return attrs;
}
private static final class SeverityAttributes {
private final String styleAttribute;
private final String classAttribute;
private final String messageSkinClass;
private final String messagesSkinClass;
private SeverityAttributes(String attPrefix, String skinSuffix) {
this.styleAttribute = attPrefix + "Style";
this.classAttribute = attPrefix + "Class";
this.messageSkinClass = "rf-msg-" + skinSuffix;
this.messagesSkinClass = "rf-msgs-" + skinSuffix;
}
}
}