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package com.sun.faces.config.processor;
import com.sun.faces.util.FacesLogger;
import com.sun.faces.config.Verifier;
import com.sun.faces.config.DocumentInfo;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.Element;
import org.w3c.dom.Document;
import javax.faces.application.Application;
import javax.faces.component.UIComponent;
import javax.faces.component.FacesComponent;
import javax.servlet.ServletContext;
import javax.xml.xpath.XPathExpressionException;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.text.MessageFormat;
/**
* <p>
* This <code>ConfigProcessor</code> handles all elements defined under
* <code>/faces-config/component</code>.
* </p>
*/
public class ComponentConfigProcessor extends AbstractConfigProcessor {
private static final Logger LOGGER = FacesLogger.CONFIG.getLogger();
/**
* <p>/faces-config/component</p>
*/
private static final String COMPONENT = "component";
/**
* <p>/faces-config/component/component-type</p>
*/
private static final String COMPONENT_TYPE = "component-type";
/**
* <p>/faces-config/component/component-class</p>
*/
private static final String COMPONENT_CLASS = "component-class";
// -------------------------------------------- Methods from ConfigProcessor
/**
* @see ConfigProcessor#process(javax.servlet.ServletContext,com.sun.faces.config.DocumentInfo[]) @param sc
* @param documentInfos
*/
public void process(ServletContext sc, DocumentInfo[] documentInfos)
throws Exception {
// process annotated components first as components configured
// via config files take precedence
processAnnotations(FacesComponent.class);
for (int i = 0; i < documentInfos.length; i++) {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.log(Level.FINE,
MessageFormat.format(
"Processing component elements for document: ''{0}''",
documentInfos[i].getSourceURI()));
}
Document document = documentInfos[i].getDocument();
String namespace = document.getDocumentElement()
.getNamespaceURI();
NodeList components = document.getDocumentElement()
.getElementsByTagNameNS(namespace, COMPONENT);
if (components != null && components.getLength() > 0) {
addComponents(components, namespace);
}
}
invokeNext(sc, documentInfos);
}
// --------------------------------------------------------- Private Methods
private void addComponents(NodeList components, String namespace)
throws XPathExpressionException {
Application app = getApplication();
Verifier verifier = Verifier.getCurrentInstance();
for (int i = 0, size = components.getLength(); i < size; i++) {
Node componentNode = components.item(i);
NodeList children = ((Element) componentNode)
.getElementsByTagNameNS(namespace, "*");
String componentType = null;
String componentClass = null;
for (int c = 0, csize = children.getLength(); c < csize; c++) {
Node n = children.item(c);
if (COMPONENT_TYPE.equals(n.getLocalName())) {
componentType = getNodeText(n);
} else if (COMPONENT_CLASS.equals(n.getLocalName())) {
componentClass = getNodeText(n);
}
}
if (componentType != null && componentClass != null) {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.log(Level.FINE,
MessageFormat.format(
"Calling Application.addComponent({0},{1})",
componentType,
componentClass));
}
if (verifier != null) {
verifier.validateObject(Verifier.ObjectType.COMPONENT,
componentClass,
UIComponent.class);
}
app.addComponent(componentType, componentClass);
}
}
}
}