/*
 * Copyright 2010 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jbpm.compiler.xml.processes;

import org.drools.core.xml.ExtensibleXmlParser;
import org.jbpm.workflow.core.DroolsAction;
import org.jbpm.workflow.core.Node;
import org.jbpm.workflow.core.impl.DroolsConsequenceAction;
import org.jbpm.workflow.core.node.ActionNode;
import org.w3c.dom.Element;
import org.xml.sax.SAXException;

public class ActionNodeHandler extends AbstractNodeHandler {

    protected Node createNode() {
        return new ActionNode();
    }

    public void handleNode(final Node node, final Element element, final String uri,
            final String localName, final ExtensibleXmlParser parser)
            throws SAXException {
        super.handleNode(node, element, uri, localName, parser);
        ActionNode actionNode = (ActionNode) node;
        org.w3c.dom.Node xmlNode = element.getFirstChild();
        if (xmlNode instanceof Element) {
            Element actionXml = (Element) xmlNode;
            DroolsAction action = extractAction(actionXml);
            actionNode.setAction(action);
        }
    }

    @SuppressWarnings("unchecked")
    public Class generateNodeFor() {
        return ActionNode.class;
    }

    public void writeNode(Node node, StringBuilder xmlDump, boolean includeMeta) {
        ActionNode actionNode = (ActionNode) node;
        writeNode("actionNode", actionNode, xmlDump, includeMeta);
        DroolsConsequenceAction action = (DroolsConsequenceAction) actionNode.getAction();
        if (action != null || (includeMeta && containsMetaData(actionNode))) {
            xmlDump.append(">" + EOL);
            if (action != null) {
                writeAction(action, xmlDump);
            }
            if (includeMeta) {
                writeMetaData(actionNode, xmlDump);
            }
            endNode("actionNode", xmlDump);
        } else {
            endNode(xmlDump);
        }
    }

}
