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package com.sun.faces.facelets.tag.ui;
import com.sun.faces.facelets.FaceletContextImplBase;
import com.sun.faces.facelets.TemplateClient;
import com.sun.faces.facelets.el.VariableMapperWrapper;
import com.sun.faces.facelets.tag.TagHandlerImpl;
import com.sun.faces.util.FacesLogger;
import javax.el.VariableMapper;
import javax.faces.component.UIComponent;
import javax.faces.view.facelets.FaceletContext;
import javax.faces.view.facelets.TagAttribute;
import javax.faces.view.facelets.TagAttributeException;
import javax.faces.view.facelets.TagConfig;
import java.io.IOException;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* @author Jacob Hookom
*/
public final class DecorateHandler extends TagHandlerImpl implements TemplateClient {
private static final Logger log = FacesLogger.FACELETS_DECORATE.getLogger();
private final TagAttribute template;
private final Map handlers;
private final ParamHandler[] params;
/**
* @param config
*/
public DecorateHandler(TagConfig config) {
super(config);
this.template = this.getRequiredAttribute("template");
this.handlers = new HashMap();
Iterator itr = this.findNextByType(DefineHandler.class);
DefineHandler d = null;
while (itr.hasNext()) {
d = (DefineHandler) itr.next();
this.handlers.put(d.getName(), d);
if (log.isLoggable(Level.FINE)) {
log.fine(tag + " found Define[" + d.getName() + "]");
}
}
List paramC = new ArrayList();
itr = this.findNextByType(ParamHandler.class);
while (itr.hasNext()) {
paramC.add(itr.next());
}
if (paramC.size() > 0) {
this.params = new ParamHandler[paramC.size()];
for (int i = 0; i < this.params.length; i++) {
this.params[i] = (ParamHandler) paramC.get(i);
}
} else {
this.params = null;
}
}
/*
* (non-Javadoc)
*
* @see com.sun.facelets.FaceletHandler#apply(com.sun.facelets.FaceletContext,
* javax.faces.component.UIComponent)
*/
public void apply(FaceletContext ctxObj, UIComponent parent)
throws IOException {
FaceletContextImplBase ctx = (FaceletContextImplBase) ctxObj;
VariableMapper orig = ctx.getVariableMapper();
if (this.params != null) {
VariableMapper vm = new VariableMapperWrapper(orig);
ctx.setVariableMapper(vm);
for (int i = 0; i < this.params.length; i++) {
this.params[i].apply(ctx, parent);
}
}
ctx.pushClient(this);
String path = null;
try {
path = this.template.getValue(ctx);
ctx.includeFacelet(parent, path);
} catch (IOException e) {
if (log.isLoggable(Level.FINE)) {
log.log(Level.FINE, e.toString(), e);
}
throw new TagAttributeException(this.tag, this.template, "Invalid path : " + path);
} finally {
ctx.setVariableMapper(orig);
ctx.popClient(this);
}
}
public boolean apply(FaceletContext ctx, UIComponent parent, String name) throws IOException {
if (name != null) {
DefineHandler handler = (DefineHandler) this.handlers.get(name);
if (handler != null) {
handler.applyDefinition(ctx, parent);
return true;
} else {
return false;
}
} else {
this.nextHandler.apply(ctx, parent);
return true;
}
}
}