org.eclipse.gmf.runtime.diagram.ui.internal.DiagramUIPlugin.java Source code

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Here is the source code for org.eclipse.gmf.runtime.diagram.ui.internal.DiagramUIPlugin.java

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/******************************************************************************
 * Copyright (c) 2002, 2009 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 API and implementation 
 ****************************************************************************/

package org.eclipse.gmf.runtime.diagram.ui.internal;

import org.eclipse.core.runtime.Plugin;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gmf.runtime.diagram.core.listener.DiagramEventBroker;
import org.eclipse.gmf.runtime.diagram.core.preferences.PreferencesHint;
import org.eclipse.gmf.runtime.diagram.ui.DiagramEventBrokerThreadSafe;
import org.eclipse.jface.preference.PreferenceStore;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;

/**
 * The DiagramUI  plugin defines all the artifacts needed for the
 * visualization of modelling diagrams
 * 
 * @author melaasar
 */
public class DiagramUIPlugin extends AbstractUIPlugin {

    /**
     * the plugin singleton
     */
    private static Plugin singleton;

    /**
     * gets the plugin singleton
     * 
     * @return the plugin singleton
     */
    public static DiagramUIPlugin getInstance() {
        return (DiagramUIPlugin) singleton;
    }

    /**
     * Retrieves the unique identifier of this plug-in.
     * 
     * @return A non-empty string and is unique within the plug-in registry.
     */
    public static String getPluginId() {
        return getInstance().getBundle().getSymbolicName();
    }

    /**
     * Creates the Diagram plugin instance
     * 
     * @see org.eclipse.core.runtime.Plugin#Plugin()
     */
    public DiagramUIPlugin() {
        super();
        if (singleton == null) {
            singleton = this;
        }
    }

    public void start(BundleContext context) throws Exception {
        super.start(context);

        PreferencesHint.registerPreferenceStore(PreferencesHint.USE_DEFAULTS, new PreferenceStore());

        DiagramEventBroker.registerDiagramEventBrokerFactory(new DiagramEventBroker.DiagramEventBrokerFactory() {
            public DiagramEventBroker createDiagramEventBroker(TransactionalEditingDomain editingDomain) {
                return new DiagramEventBrokerThreadSafe(editingDomain);
            }
        });
    }

}