/**
 * Copyright (c) 2009-2010 Thales Corporate Services S.A.S.
 * 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:
 * Thales Corporate Services S.A.S - initial API and implementation
 */
package org.eclipse.egf.core.pde.internal.extension;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.egf.core.pde.extension.IFcoreExtensionFactory;
import org.eclipse.egf.core.pde.plugin.IPluginChangesCommand;

/**
 * This factory creates commands to deal with "fcore" extension-point.
 * 
 * @author Xavier Maysonnave
 */
public class FcoreExtensionFactory implements IFcoreExtensionFactory {

    /**
     * Unique reference.
     */
    private static FcoreExtensionFactory __instance;

    /**
     * Private constructor to implement singleton pattern.
     */
    private FcoreExtensionFactory() {
        // Do nothing.
    }

    /**
     * Get the unique instance.
     * 
     * @return __instance
     */
    public static FcoreExtensionFactory getInstance() {
        if (__instance == null) {
            __instance = new FcoreExtensionFactory();
        }
        return __instance;
    }

    public IPluginChangesCommand setFcoreExtension(IPath path) throws CoreException {
        return new SetFcoreExtensionCommand(path);
    }

    public IPluginChangesCommand unsetFcoreExtension(IPath path) throws CoreException {
        return new UnsetFcoreExtensionCommand(path);
    }

}