package org.eclipse.pde.ds.builder.internal;

import java.lang.reflect.InvocationTargetException;
import org.eclipse.core.runtime.*;
import org.eclipse.emf.ecore.EValidator;
import org.eclipse.pde.ds.builder.internal.validation.AdvancedScrValidator;
import org.eclipse.pde.ds.scr.ScrPackage;
import org.osgi.framework.BundleContext;

/**
 * The activator class controls the plug-in life cycle
 */
public class Activator extends Plugin {

	// The plug-in ID
	public static final String PLUGIN_ID = "org.eclipse.pde.ds.builder";

	// The shared instance
	private static Activator plugin;

	/**
	 * The constructor
	 */
	public Activator() {
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.core.runtime.Plugin#start(org.osgi.framework.BundleContext )
	 */
	public void start(BundleContext context) throws Exception {
		super.start(context);
		plugin = this;

		// TODO register the extended validator in a better way
		EValidator.Registry.INSTANCE.put(ScrPackage.eINSTANCE,
				new EValidator.Descriptor() {
					public EValidator getEValidator() {
						return new AdvancedScrValidator();
					}
				});

	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.core.runtime.Plugin#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;
	}

	public static void log(IStatus status) {
		if (status != null)
			getDefault().getLog().log(status);
	}

	public static void log(Throwable e) {
		if (e instanceof InvocationTargetException)
			e = ((InvocationTargetException) e).getTargetException();
		IStatus status = null;
		if (e instanceof CoreException) {
			status = ((CoreException) e).getStatus();
		} else if (e.getMessage() != null) {
			status = new Status(IStatus.ERROR, PLUGIN_ID, IStatus.OK, e
					.getMessage(), e);
		}
		log(status);
	}

	public static void logErrorMessage(String message) {
		log(new Status(IStatus.ERROR, PLUGIN_ID, IStatus.ERROR, message, null));
	}

	public static void logException(Throwable e) {
		logException(e, null);
	}

	public static void logException(Throwable e, String message) {
		if (e instanceof InvocationTargetException) {
			e = ((InvocationTargetException) e).getTargetException();
		}
		IStatus status = null;
		if (e instanceof CoreException)
			status = ((CoreException) e).getStatus();
		else {
			if (message == null)
				message = e.getMessage();
			if (message == null)
				message = e.toString();
			status = new Status(IStatus.ERROR, PLUGIN_ID, IStatus.OK, message,
					e);
		}
		log(status);
	}

}