/*
 * Licensed to "Neo Technology," Network Engine for Objects in Lund AB
 * (http://neotechnology.com) under one or more contributor license agreements.
 * See the NOTICE file distributed with this work for additional information
 * regarding copyright ownership. Neo Technology licenses this file to you under
 * the Apache License, Version 2.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of the License
 * at (http://www.apache.org/licenses/LICENSE-2.0). Unless required by
 * applicable law or agreed to in writing, software distributed under the
 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
 * OF ANY KIND, either express or implied. See the License for the specific
 * language governing permissions and limitations under the License.
 */
package org.neo4j.neoclipse;

import org.eclipse.jface.preference.PreferenceDialog;
import org.eclipse.ui.dialogs.PreferencesUtil;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.neo4j.neoclipse.graphdb.GraphDbServiceManager;
import org.osgi.framework.BundleContext;

/**
 * The activator class controls the plug-in life cycle.
 */
public class Activator extends AbstractUIPlugin
{
    /**
     * The plug-in ID.
     */
    public static final String PLUGIN_ID = "org.neo4j.neoclipse";
    /**
     * The graphdb manager.
     */
    protected GraphDbServiceManager graphDbManager;
    /**
     * The shared instance.
     */
    private static Activator PLUGIN;

    /**
     * Starts up the plug-in and initializes the neo service.
     */
    @Override
    public void start( final BundleContext context ) throws Exception
    {
        super.start( context );
        PLUGIN = this;
        graphDbManager = new GraphDbServiceManager();
    }

    /**
     * Stops the plug-in and shuts down the neo4j service.
     */
    @Override
    public void stop( final BundleContext context ) throws Exception
    {
        graphDbManager.shutdownGraphDbService();
        graphDbManager.stopExecutingTasks();
        PLUGIN = null;
        super.stop( context );
    }

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

    /**
     * Returns the service manager.
     */
    public GraphDbServiceManager getGraphDbServiceManager()
    {
        return graphDbManager;
    }

    /**
     * Show the Neo4j preference page.
     * 
     * @param filtered only show Neo4j properties when true
     * @return
     */
    public int showPreferenceDialog( final boolean filtered )
    {
        PreferenceDialog pref = PreferencesUtil.createPreferenceDialogOn( null,
                "org.neo4j.neoclipse.preference.NeoPreferencePage",
                ( filtered ? new String[] {} : null ), null );
        if ( pref != null )
        {
            return pref.open();
        }
        return 1;
    }

    /**
     * Show the Neo4j Decorator preference page.
     * 
     * @param filtered only show Neo4j properties when true
     * @return
     */
    public int showDecoratorPreferenceDialog( final boolean filtered )
    {
        PreferenceDialog pref = PreferencesUtil.createPreferenceDialogOn( null,
                "org.neo4j.neoclipse.preference.NeoDecoratorPreferencePage",
                ( filtered ? new String[] {} : null ), null );
        if ( pref != null )
        {
            return pref.open();
        }
        return 1;
    }
}