/*******************************************************************************
 * <copyright>
 *
 * Copyright (c) 2005, 2010 SAP AG.
 * 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:
 *    Stefan Dimov - initial API, implementation and documentation
 *
 * </copyright>
 *
 *******************************************************************************/
package org.eclipse.jpt.jpadiagrameditor.ui.internal;

import org.eclipse.core.resources.IResourceChangeEvent;
import org.eclipse.core.resources.IResourceChangeListener;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jdt.internal.ui.dialogs.OptionalMessageDialog;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.facade.EclipseFacade;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.util.JPAEditorConstants;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.util.ResourceChangeListener;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;

/**
 * The activator class controls the plug-in life cycle
 */
@SuppressWarnings("restriction")
public class JPADiagramEditorPlugin extends AbstractUIPlugin {

	// The plug-in ID
	public static final String PLUGIN_ID = "org.eclipse.jpt.jpadiagrameditor.ui"; //$NON-NLS-1$

	// The shared instance
	private static JPADiagramEditorPlugin plugin;
	
	private IResourceChangeListener changeListener;
		
	/**
	 * The constructor
	 */
	public JPADiagramEditorPlugin() {
	}
	
	/*
	 * (non-Javadoc)
	 * @see org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext)
	 */
	public void start(BundleContext context) throws Exception {
		super.start(context);
		plugin = this;
		
		OptionalMessageDialog.setDialogEnabled(JPAEditorConstants.JPA_SUPPORT_DIALOG_ID, true);
		changeListener = new ResourceChangeListener();
		EclipseFacade.INSTANCE.getWorkspace().addResourceChangeListener(changeListener, IResourceChangeEvent.POST_CHANGE);
	}

	/*
	 * (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);
		EclipseFacade.INSTANCE.getWorkspace().removeResourceChangeListener(changeListener);
	}

	/**
	 * Returns the shared instance
	 *
	 * @return the shared instance
	 */
	public static JPADiagramEditorPlugin 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(PLUGIN_ID, path);
	}
	
	/**
	 * Log the specified message.
	 */
	public static void logError(String msg) {
        logError(msg, null);
    }

	/**
	 * Log the specified exception or error.
	 */
	public static void logError(Throwable throwable) {
		logError(throwable.getLocalizedMessage(), throwable);
	}

	/**
	 * Log the specified message and exception or error.
	 */
	public static void logError(String msg, Throwable throwable) {
		log(new Status(IStatus.ERROR, PLUGIN_ID, IStatus.OK, msg, throwable));
	}
	
	/**
	 * Log the specified status.
	 */
	public static void log(IStatus status) {
		plugin.getLog().log(status);
    }
	
	
	/**
	 * Log the specified message and exception or error.
	 */
	public static void logInfo(String msg) {
		log(new Status(IStatus.INFO, PLUGIN_ID, IStatus.OK, msg, null));
	}
	
}