/*
 * Copyright (c) 2004-2011 Marco Maccaferri and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Marco Maccaferri - initial API and implementation
 */

package org.eclipsetrader.yahoo.internal.news;

import javax.xml.bind.JAXBException;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExecutableExtension;
import org.eclipse.core.runtime.IExecutableExtensionFactory;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipsetrader.yahoo.internal.YahooActivator;

public class NewsProviderFactory implements IExecutableExtensionFactory, IExecutableExtension {

    private static NewsProvider provider;

    private String id;
    private String name;

    public NewsProviderFactory() {
    }

    /* (non-Javadoc)
     * @see org.eclipse.core.runtime.IExecutableExtension#setInitializationData(org.eclipse.core.runtime.IConfigurationElement, java.lang.String, java.lang.Object)
     */
    @Override
    public void setInitializationData(IConfigurationElement config, String propertyName, Object data) throws CoreException {
        id = config.getAttribute("id");
        name = config.getAttribute("name");
    }

    /* (non-Javadoc)
     * @see org.eclipse.core.runtime.IExecutableExtensionFactory#create()
     */
    @Override
    public Object create() throws CoreException {
        if (provider == null) {
            provider = new NewsProvider(id, name);
            try {
                provider.startUp();
            } catch (JAXBException e) {
                Status status = new Status(IStatus.WARNING, YahooActivator.PLUGIN_ID, 0, "Error initializing news provider", e);
                throw new CoreException(status);
            }
        }
        return provider;
    }
}