/**
*
*/
package org.richfaces.taglib;
import javax.el.MethodExpression;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import com.sun.facelets.FaceletContext;
import com.sun.facelets.tag.MetaRule;
import com.sun.facelets.tag.MetaRuleset;
import com.sun.facelets.tag.Metadata;
import com.sun.facelets.tag.MetadataTarget;
import com.sun.facelets.tag.TagAttribute;
import com.sun.facelets.tag.jsf.ComponentConfig;
import com.sun.facelets.tag.jsf.ComponentHandler;
/**
* @author Konstantin Mishin
*
*/
public class ColumnTagHandler extends ComponentHandler {
private final static String FILTER_METHOD = "filterMethod";
public ColumnTagHandler(ComponentConfig config) {
super(config);
}
@SuppressWarnings("unchecked")
@Override
protected MetaRuleset createMetaRuleset(Class type) {
MetaRuleset ruleset = super.createMetaRuleset(type);
ruleset.addRule(new MetaRule() {
@Override
public Metadata applyRule(String name, final TagAttribute attribute, MetadataTarget metadataTarget) {
if (FILTER_METHOD.equals(name)) {
return new Metadata() {
public void applyMetadata(FaceletContext context, Object object) {
FacesContext facesContext = context.getFacesContext();
MethodExpression expression = facesContext.getApplication().getExpressionFactory().
createMethodExpression(facesContext.getELContext(), attribute.getValue(), boolean.class, new Class[]{Object.class});
((UIComponent) object).getAttributes().put(FILTER_METHOD, expression);
}
};
}
return null;
}
});
return ruleset;
}
}