/*
 * JBoss, Home of Professional Open Source
 * Copyright 2013, 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.ui.ajax.poll;

import javax.el.MethodExpression;
import javax.faces.event.ActionEvent;
import javax.faces.event.ActionListener;
import javax.faces.event.MethodExpressionActionListener;
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.ui.common.MethodMetadata;

public class AjaxPollHandler extends ComponentHandler {
    private static final AjaxPollHandlerMetaRule META_RULE = new AjaxPollHandlerMetaRule();

    public AjaxPollHandler(ComponentConfig config) {
        super(config);
    }

    protected MetaRuleset createMetaRuleset(Class type) {
        MetaRuleset m = super.createMetaRuleset(type);
        m.addRule(META_RULE);
        return m;
    }

    static class AjaxPollHandlerMetaRule extends MetaRule {
        public Metadata applyRule(String name, TagAttribute attribute, MetadataTarget meta) {
            if (meta.isTargetInstanceOf(AbstractPoll.class)) {
                if ("action".equals(name)) {
                    return new MethodMetadata(attribute) {
                        public void applyMetadata(FaceletContext ctx, Object instance) {
                            ((AbstractPoll) instance).setActionExpression(getMethodExpression(ctx));
                        }
                    };
                }
                if ("actionExpression".equals(name)) {
                    return new MethodMetadata(attribute) {
                        public void applyMetadata(FaceletContext ctx, Object instance) {
                            ((AbstractPoll) instance).setActionExpression(getMethodExpression(ctx));
                        }
                    };
                }
                if ("actionListener".equals(name)) {
                    return new MethodMetadata(attribute, ActionEvent.class) {
                        public void applyMetadata(FaceletContext ctx, Object instance) {
                            ActionListener actionListener = new MethodExpressionActionListener(getMethodExpression(ctx));
                            ((AbstractPoll) instance).addActionListener(actionListener);
                        }
                    };
                }
            }
            return null;
        }
    }
}
