/*

 * Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies). 

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 *

 * Contributors:

 *

 * Description:

 *

 * Color Rule Updater class

 *

 */

package com.nokia.traceviewer.view;

import org.eclipse.jface.text.IDocument;

import org.eclipse.jface.text.TextViewer;

import org.eclipse.swt.custom.StyleRange;

import org.eclipse.swt.custom.StyledText;

import com.nokia.traceviewer.engine.TraceViewerGlobals;

/**

 * Color Rule Updater class

 */

public class ColorRuleUpdater implements Runnable {

	/**

	 * Style ranges

	 */

	private final StyleRange[] ranges;

	/**

	 * Constructor

	 * 

	 * @param ranges

	 *            Style range

	 */

	public ColorRuleUpdater(StyleRange[] ranges) {

		this.ranges = ranges;

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.lang.Runnable#run()

	 */

	public void run() {

		TextViewer viewer = TraceViewerGlobals.getTraceViewer().getView()

				.getViewer();

		StyledText widget = viewer.getTextWidget();

		IDocument document = viewer.getDocument();

		// Start to replace styleranges

		if (widget != null && document.getLength() > 0 && ranges.length > 0) {

			viewer.getTextWidget().replaceStyleRanges(0, document.getLength(),

					ranges);

			// Delete all styleranges

		} else if (widget != null && document.getLength() > 0

				&& ranges.length == 0) {

			StyleRange range = new StyleRange(0, document.getLength(), null,

					null);

			viewer.getTextWidget().setStyleRange(range);

		} else {

			// Do nothing

		}

	}

}