org.eclipse.m2m.atl.profiler.ui.activators.ExecutionViewerActivator.java Source code

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Here is the source code for org.eclipse.m2m.atl.profiler.ui.activators.ExecutionViewerActivator.java

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/*******************************************************************************
 * Copyright (c) 2008,2009 Communication & Systems.
 *
 * 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:
 *    Arnaud Giuliani - initial API and implementation
 *    Obeo - getImageDescriptor method, for icons directory
 *******************************************************************************/
package org.eclipse.m2m.atl.profiler.ui.activators;

import java.net.MalformedURLException;
import java.net.URL;

import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;

/**
 * The activator class controls the plug-in life cycle.
 * 
 * @author <a href="mailto:arnaud.giuliani@c-s.fr">Arnaud Giuliani</a>
 * @author <a href="mailto:thierry.fortin@obeo.fr">Thierry Fortin</a>
 */
public class ExecutionViewerActivator extends AbstractUIPlugin {

    /** The plug-in ID. */
    public static final String PLUGIN_ID = "org.eclipse.m2m.atl.profiler.ui.executionviewer"; //$NON-NLS-1$

    // The shared instance
    private static ExecutionViewerActivator plugin;

    /**
     * The constructor.
     */
    public ExecutionViewerActivator() {
    }

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

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

    /**
     * Returns the shared instance.
     * 
     * @return the shared instance
     */
    public static ExecutionViewerActivator getDefault() {
        return plugin;
    }

    /**
     * Returns an image descriptor for the image file at the given plug-in relative path.
     * 
     * @param path
     *            the path
     * @return the image descriptor
     */
    public static ImageDescriptor getImageDescriptor(String path) {
        ExecutionViewerActivator uiPlugin = ExecutionViewerActivator.getDefault();
        String pluginDir = uiPlugin.getBundle().getEntry("/").toString(); //$NON-NLS-1$
        String iconPath = "icons/"; //$NON-NLS-1$
        try {
            return ImageDescriptor.createFromURL(new URL(pluginDir + iconPath + path));
        } catch (MalformedURLException mfe) {
            return ImageDescriptor.getMissingImageDescriptor();
        }
    }
}