/**
* License Agreement.
*
* Rich Faces - Natural Ajax for Java Server Faces (JSF)
*
* Copyright (C) 2007 Exadel, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation.
*
* This library 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.richfaces.view.facelets.html;
import javax.faces.component.ActionSource;
import javax.faces.component.UIComponent;
import javax.faces.convert.Converter;
import javax.faces.view.facelets.ComponentConfig;
import javax.faces.view.facelets.ComponentHandler;
import javax.faces.view.facelets.FaceletContext;
import javax.faces.view.facelets.MetaRule;
import javax.faces.view.facelets.MetaRuleset;
import javax.faces.view.facelets.Metadata;
import javax.faces.view.facelets.MetadataTarget;
import javax.faces.view.facelets.TagAttribute;
import javax.faces.view.facelets.TagAttributeException;
import org.ajax4jsf.Messages;
import org.richfaces.component.AbstractParameter;
/**
* @author shura (latest modification by $Author: alexsmirnov $)
* @version $Revision: 1.1.2.1 $ $Date: 2007/02/01 15:31:23 $
*/
public class ParameterHandler extends ComponentHandler {
private static final ActionParamMetaRule ACTION_PARAM_META_RULE = new ActionParamMetaRule();
/**
* @author shura (latest modification by $Author: alexsmirnov $)
* @version $Revision: 1.1.2.1 $ $Date: 2007/02/01 15:31:23 $
*/
public static class ActionParamMetaRule extends MetaRule {
/*
* (non-Javadoc)
*
* @see org.ajax4jsf.tag.SuggestionHandler.SuggestionMetaRule#applyRule(java.lang.String,
* com.sun.facelets.tag.TagAttribute, com.sun.facelets.tag.MetadataTarget)
*/
public Metadata applyRule(String name, TagAttribute attribute, MetadataTarget meta) {
if (meta.isTargetInstanceOf(AbstractParameter.class)) {
if ("assignTo".equals(name)) {
return new AssignToValueExpressionMetadata(attribute);
} else if ("converter".equals(name)) {
if (attribute.isLiteral()) {
return new LiteralConverterMetadata(attribute.getValue());
} else {
return new DynamicConverterMetadata(attribute);
}
}
}
return null;
}
}
static final class LiteralConverterMetadata extends Metadata {
private final String converterId;
public LiteralConverterMetadata(String converterId) {
this.converterId = converterId;
}
public void applyMetadata(FaceletContext ctx, Object instance) {
((AbstractParameter) instance).setConverter(ctx.getFacesContext().getApplication()
.createConverter(this.converterId));
}
}
static final class DynamicConverterMetadata extends Metadata {
private final TagAttribute attr;
public DynamicConverterMetadata(TagAttribute attr) {
this.attr = attr;
}
public void applyMetadata(FaceletContext ctx, Object instance) {
((AbstractParameter) instance).setConverter((Converter) this.attr.getObject(ctx, Converter.class));
}
}
static final class AssignToValueExpressionMetadata extends Metadata {
private final TagAttribute attr;
public AssignToValueExpressionMetadata(TagAttribute attr) {
this.attr = attr;
}
public void applyMetadata(FaceletContext ctx, Object instance) {
((AbstractParameter) instance).setAssignToExpression(attr.getValueExpression(ctx, Object.class));
}
}
private TagAttribute assignTo;
/**
* @param config
*/
public ParameterHandler(ComponentConfig config) {
super(config);
assignTo = getAttribute("assignTo");
if (null != assignTo) {
if (assignTo.isLiteral()) {
throw new TagAttributeException(this.tag, this.assignTo, Messages.getMessage(Messages.MUST_BE_EXPRESSION_ERROR));
}
}
}
/*
* (non-Javadoc)
*
* @see com.sun.facelets.FaceletHandler#apply(com.sun.facelets.FaceletContext, javax.faces.component.UIComponent)
*/
public void onComponentCreated(FaceletContext ctx, UIComponent c, UIComponent parent) {
if (parent instanceof ActionSource) {
if (assignTo != null) {
AbstractParameter al = (AbstractParameter) c;
((ActionSource) parent).addActionListener(al);
}
}
}
/*
* (non-Javadoc)
*
* @see org.ajax4jsf.tag.AjaxComponentHandler#createMetaRuleset(java.lang.Class)
*/
protected MetaRuleset createMetaRuleset(Class type) {
MetaRuleset metaRules = super.createMetaRuleset(type);
metaRules.addRule(ACTION_PARAM_META_RULE);
return metaRules;
}
}