/*
 * Copyright (c) 2004 Christopher Lenz and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     Christopher Lenz - initial API and implementation
 * 
 * $Id: CssCore.java,v 1.1 2004-09-02 18:07:13 jsurfer Exp $
 */

package net.sourceforge.phpeclipse.css.core;

import net.sourceforge.phpeclipse.css.core.internal.CssCorePreferences;
import net.sourceforge.phpeclipse.css.core.internal.profiles.ProfileManager;
import net.sourceforge.phpeclipse.css.core.profiles.IProfileManager;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Plugin;
import org.eclipse.core.runtime.Status;

/**
 * The main plugin class to be used in the desktop.
 */
public class CssCore extends Plugin {

	// Class Variables ---------------------------------------------------------

	/** The shared instance. */
	private static CssCore plugin;

	// Instance Variables ------------------------------------------------------

	/**
	 * The profile manager.
	 */
	private IProfileManager profileManager;

	// Constructors ------------------------------------------------------------

	/**
	 * Constructor.
	 */
	public CssCore() {
		plugin = this;
	}

	// Public Methods ----------------------------------------------------------

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

	/**
	 * Returns the plugin ID.
	 * 
	 * @return the plugin ID
	 */
	public static String getPluginId() {
		return getDefault().getBundle().getSymbolicName();
	}

	/**
	 * Returns the object that manages the CSS profiles.
	 * 
	 * @return the profile manager
	 */
	public synchronized IProfileManager getProfileManager() {
		if (profileManager == null) {
			profileManager = new ProfileManager(getPluginPreferences());
		}
		return profileManager;
	}

	/**
	 * Writes a status message and the associated exception stack trace (if
	 * provided) to the error log.
	 * 
	 * @param status the status to log
	 */
	public static void log(IStatus status) {
		getDefault().getLog().log(status);
		if (status.getException() != null) {
			status.getException().printStackTrace(System.err);
		}
	}

	/**
	 * Writes the specified error message and exception stack trace to the error
	 * log.
	 * 
	 * @param message the error message
	 * @param e the exception that caused the error, or <tt>null</tt> to omit
	 *        the stack trace in the log
	 */
	public static void log(String message, Throwable e) {
		IStatus status = new Status(IStatus.ERROR, getPluginId(), IStatus.ERROR,
			message, e); 
		log(status);
	}

	/**
	 * Writes the specified error message to the error log.
	 * 
	 * @param message the error message
	 */
	public static void log(String message) {
		IStatus status = new Status(IStatus.ERROR, getPluginId(), IStatus.ERROR,
			message, null); 
		log(status);
	}

	/**
	 * Writes the stack trace of the given exception to the error log.
	 * 
	 * @param e the exception that caused the error
	 */
	public static void log(Throwable e) {
		log(e.getMessage(), e);
	}

	// Plugin Implementation ---------------------------------------------------

	/* 
	 * @see Plugin#initializeDefaultPluginPreferences()
	 */
	protected void initializeDefaultPluginPreferences() {
		CssCorePreferences.initializeDefaultValues(getPluginPreferences());
	}

}