/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.cocoon.forms.formmodel;

import java.util.Iterator;

import org.apache.cocoon.forms.FormsConstants;
import org.apache.cocoon.forms.event.ActionListener;
import org.apache.cocoon.forms.util.DomHelper;
import org.w3c.dom.Element;

/**
 * Builds {@link ImageMapDefinition}s.
 *
 * @version $Id$
 * @since 2.1.8
 */
public class ImageMapDefinitionBuilder extends AbstractWidgetDefinitionBuilder {

    public WidgetDefinition buildWidgetDefinition(Element widgetElement, WidgetDefinitionBuilderContext context)
    throws Exception {
        ImageMapDefinition definition = new ImageMapDefinition();
        setupDefinition(widgetElement, definition, context);

        definition.makeImmutable();
        return definition;
    }

    protected void setupDefinition(Element widgetElement, ImageMapDefinition definition, WidgetDefinitionBuilderContext context)
    throws Exception {
        super.setupDefinition(widgetElement, definition, context);

        setDisplayData(widgetElement, definition);

        // Get the "command" optional attribute
        String actionCommand = DomHelper.getAttribute(widgetElement, ImageMap.COMMAND_AT, null);
        definition.setActionCommand(actionCommand);

        Iterator iter = buildEventListeners(widgetElement, ImageMap.ONACTION_EL, ActionListener.class).iterator();
        while (iter.hasNext()) {
            definition.addActionListener((ActionListener) iter.next());
        }

        // Sets image map source
        Element imageURIEl = DomHelper.getChildElement(widgetElement, FormsConstants.DEFINITION_NS, ImageMap.VALUE_EL);
        if (imageURIEl != null) {
            definition.setImageURI(DomHelper.getElementText(imageURIEl));
        }
    }
}