/*******************************************************************************
 *    Copyright (c) 2010 Eteration A.S. 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:
 *        IBM Corporation - initial API and implementation
 *           - This code is based on WTP SDK frameworks and Tomcat Server Adapters
 *           org.eclipse.jst.server.core
 *           org.eclipse.jst.server.ui
 *           
 *       Naci Dai and Murat Yener, Eteration A.S. 
 *******************************************************************************/
package org.eclipse.libra.framework.core;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.preferences.DefaultScope;
import org.eclipse.pde.core.project.IBundleProjectDescription;
import org.eclipse.pde.core.project.IBundleProjectService;
import org.eclipse.pde.internal.core.PDECore;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;


public class FrameworkCorePlugin extends AbstractUIPlugin {

	// The plug-in ID
	public static final String PLUGIN_ID = "org.eclipse.libra.framework.core"; //$NON-NLS-1$

	// The shared instance
	private static FrameworkCorePlugin plugin;
	
	/**
	 * The constructor
	 */
	public FrameworkCorePlugin() {
		super();
		plugin = this;
	}

	/*
	 * (non-Javadoc)
	 * @see org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext)
	 */
	public void start(BundleContext context) throws Exception {
		super.start(context);
		plugin = this;
	}

	/*
	 * (non-Javadoc)
	 * @see org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext)
	 */
	public void stop(BundleContext context) throws Exception {
		plugin = null;
		super.stop(context);
	}

	/**
	 * Returns the shared instance
	 *
	 * @return the shared instance
	 */
	public static FrameworkCorePlugin getDefault() {
		return plugin;
	}
	
	
	public static String getPreference(String id) {
		return Platform.getPreferencesService().getString(PLUGIN_ID, id, "", null);
	}
	
	public static void setPreference(String id, String value) {
		(new DefaultScope()).getNode(PLUGIN_ID).put(id, value);
	}
	
	
	public static IBundleProjectService getBundleProjectService() {
		PDECore instance = PDECore.getDefault();
		if (instance == null)
			return null;
		return (IBundleProjectService) instance.acquireService(IBundleProjectService.class.getName());
	}
	
	public static IBundleProjectDescription getDescription(IProject project) throws CoreException {
		try {
			return getBundleProjectService().getDescription(project);
		}
		catch (IllegalArgumentException e) {
			return null;
		}
	}


}