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package com.sun.faces.config.rules;
import org.xml.sax.Attributes;
import com.sun.faces.config.beans.FeatureBean;
import com.sun.faces.config.beans.IconBean;
/**
* <p>Digester rule for the <code><icon></code> element.</p>
*/
public class IconRule extends FeatureRule {
private static final String CLASS_NAME =
"com.sun.faces.config.beans.IconBean";
// ------------------------------------------------------------ Rule Methods
/**
* <p>Create or retrieve an instance of <code>IconBean</code>
* and push it on to the object statck.</p>
*
* @param namespace the namespace URI of the matching element, or an
* empty string if the parser is not namespace aware or the element has
* no namespace
* @param name the local name if the parser is namespace aware, or just
* the element name otherwise
* @param attributes The attribute list of this element
*
* @exception IllegalStateException if the parent stack element is not
* of type FeatureBean
*/
public void begin(String namespace, String name,
Attributes attributes) throws Exception {
FeatureBean fb = null;
try {
fb = (FeatureBean) digester.peek();
} catch (Exception e) {
throw new IllegalStateException
("No parent FeatureBean on object stack");
}
String lang = attributes.getValue("lang");
if (lang == null) {
lang = attributes.getValue("xml:lang"); // If digester not ns-aware
}
if (lang == null) {
lang = ""; // Avoid NPE errors on sorted map comparisons
}
IconBean ib = fb.getIcon(lang);
if (ib == null) {
if (digester.getLogger().isDebugEnabled()) {
digester.getLogger().debug("[IconRule]{" +
digester.getMatch() +
"} New (" + lang + ")");
}
Class clazz =
digester.getClassLoader().loadClass(CLASS_NAME);
ib = (IconBean) clazz.newInstance();
ib.setLang(lang);
fb.addIcon(ib);
} else {
if (digester.getLogger().isDebugEnabled()) {
digester.getLogger().debug("[IconRule]{" +
digester.getMatch() +
"} Old (" + lang + ")");
}
}
digester.push(ib);
}
/**
* <p>No body processing is required.</p>
*
* @param namespace the namespace URI of the matching element, or an
* empty string if the parser is not namespace aware or the element has
* no namespace
* @param name the local name if the parser is namespace aware, or just
* the element name otherwise
* @param text The text of the body of this element
*/
public void body(String namespace, String name,
String text) throws Exception {
}
/**
* <p>Pop the <code>IconBean</code> off the top of the stack.</p>
*
* @param namespace the namespace URI of the matching element, or an
* empty string if the parser is not namespace aware or the element has
* no namespace
* @param name the local name if the parser is namespace aware, or just
* the element name otherwise
*
* @exception IllegalStateException if the popped object is not
* of the correct type
*/
public void end(String namespace, String name) throws Exception {
IconBean top = null;
try {
top = (IconBean) digester.pop();
} catch (Exception e) {
throw new IllegalStateException("Popped object is not a " +
CLASS_NAME + " instance");
}
if (digester.getLogger().isDebugEnabled()) {
digester.getLogger().debug("[IconRule]{" +
digester.getMatch() +
"} Pop (" + top.getLang() + ")");
}
}
/**
* <p>No finish processing is required.</p>
*
*/
public void finish() throws Exception {
}
// ---------------------------------------------------------- Public Methods
public String toString() {
StringBuffer sb = new StringBuffer("IconRule[className=");
sb.append(CLASS_NAME);
sb.append("]");
return (sb.toString());
}
// --------------------------------------------------------- Package Methods
}