package org.eparapher.rcp;

import java.io.IOException;
import java.util.PropertyResourceBundle;

import org.eclipse.core.runtime.FileLocator;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.Status;
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
 */
public class Activator extends AbstractUIPlugin {

	/** The plugin properties */
    private PropertyResourceBundle properties;
    
	// The shared instance
	private static Activator plugin;
	
	/**
	 * The constructor
	 */
	public Activator() {
		plugin = this;
	}

	/*
	 * (non-Javadoc)
	 * @see org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext)
	 */
	@SuppressWarnings("deprecation")
	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 Activator 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) {
		return imageDescriptorFromPlugin(Application.PLUGIN_ID, path);
	}

    /**
     * Gets the plugin properties.
     *
     * @return
     *      the plugin properties
     */
    public PropertyResourceBundle getPluginProperties()
    {
        if ( properties == null )
        {
            try
            {
                properties = new PropertyResourceBundle( FileLocator.openStream( this.getBundle(), new Path(
                    "plugin.properties" ), false ) );
            }
            catch ( IOException e )
            {
                // We can't use the PLUGIN_ID constant since loading the plugin.properties file has failed,
                // So we're using a default plugin id.
                getLog().log(
                    new Status( Status.ERROR, "org.eparapher.rcp", Status.OK,
                        "Unable to get the plugin properties.", e ) );
            }
        }

        return properties;
    }
}