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AutocompleteHandler.java
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/
AutocompleteHandler.java
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/*
* 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.view.facelets;
import javax.el.ValueExpression;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
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 org.richfaces.component.AbstractAutocomplete;
/**
* @author Nick Belaevski
*/
// TODO nick - this should be generated by CDK
public class AutocompleteHandler extends ComponentHandler {
private static final MetaRule AUTOCOMPLETE_METHOD_META_RULE = new MetaRule() {
@Override
public Metadata applyRule(String name, TagAttribute attribute, MetadataTarget meta) {
if (meta.isTargetInstanceOf(AbstractAutocomplete.class)) {
if ("autocompleteMethod".equals(name)) {
// workaround for RF-11469
final MethodMetadata oneParameterMetadata = new MethodMetadata(attribute, String.class) {
public void applyMetadata(FaceletContext ctx, Object instance) {
((AbstractAutocomplete) instance).setAutocompleteMethodWithOneParameter(getMethodExpression(ctx));
}
};
return new MethodMetadata(attribute, FacesContext.class, UIComponent.class, String.class) {
public void applyMetadata(FaceletContext ctx, Object instance) {
((AbstractAutocomplete) instance).setAutocompleteMethod(getMethodExpression(ctx));
((AbstractAutocomplete) instance).setAutocompleteMethodWithOneParameter(oneParameterMetadata.getMethodExpression(ctx));
}
};
}
if ("converter".equals(name)) {
return new ConverterMetadata(attribute) {
public void applyMetadata(FaceletContext ctx, Object instance) {
((AbstractAutocomplete) instance).setConverter(this.getConverter(ctx,
(AbstractAutocomplete) instance, this.getAttr().getValueExpression(ctx, Converter.class)));
}
};
}
}
return null;
}
};
public AutocompleteHandler(ComponentConfig config) {
super(config);
}
@Override
protected MetaRuleset createMetaRuleset(Class type) {
MetaRuleset metaRuleset = super.createMetaRuleset(type);
metaRuleset.addRule(AUTOCOMPLETE_METHOD_META_RULE);
return metaRuleset;
}
abstract static class ConverterMetadata extends Metadata {
private final TagAttribute attr;
public ConverterMetadata(TagAttribute attr) {
this.attr = attr;
}
public TagAttribute getAttr() {
return attr;
}
public Converter getConverter(FaceletContext ctx, AbstractAutocomplete component, ValueExpression converter) {
ValueExpression ve = null;
Converter c = null;
if (converter != null) {
ve = converter;
try {
c = (Converter) ve.getValue(ctx);
} catch (Exception e) {
// ok
}
}
if (c == null) {
c = this.createConverter(ctx, component);
}
if (c == null) {
// throw new TagException(this.getTag(), "No Converter was
// created");
}
return c;
}
private String getConverterId(FaceletContext ctx) {
return this.getAttr().getValue(ctx);
}
private Converter createConverter(FaceletContext ctx, AbstractAutocomplete component) {
return ctx.getFacesContext().getApplication().createConverter(getConverterId(ctx));
}
}
}