//------------------------------------------------------------------------------
// Copyright (c) 2005, 2007 IBM Corporation 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 implementation
//------------------------------------------------------------------------------
package org.eclipse.epf.diagramming;

import org.eclipse.epf.common.plugin.AbstractPlugin;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.graphics.Image;
import org.osgi.framework.BundleContext;

/**
 * The activator class controls the plug-in life cycle
 */
public class EPFDiagramPlugin extends AbstractPlugin {

	// The plug-in ID
	public static final String PLUGIN_ID = "org.eclipse.epf.diagramming";

	// The shared instance
	private static EPFDiagramPlugin plugin;
	
	/**
	 * The constructor
	 */
	public EPFDiagramPlugin() {
		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);
	}

	/*
	 * (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 EPFDiagramPlugin getDefault() {
		return plugin;
	}
	
	/**
	 * Return image based on given path
	 * 
	 * @param imageFilePath
	 * @return image
	 */
	public Image getImage(String imageFilePath) {
		Image image = null;
		ImageDescriptor imageDescriptor = imageDescriptorFromPlugin(PLUGIN_ID, imageFilePath);
		if (imageDescriptor != null) {
			image = imageDescriptor.createImage(false);
		}
		return image;
	}
	
	public static String getPluginId(){
		return PLUGIN_ID;
	}
}