/*******************************************************************************
 * Copyright (c) 2000, 2005 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial API and implementation
 * Port to the D programming language:
 *     Frank Benoit <benoit@tionex.de>
 *******************************************************************************/

module dwtx.jface.text.MarkSelection;

import dwt.dwthelper.utils;


/**
 * Default implementation of {@link dwtx.jface.text.IMarkSelection}.
 *
 * @since 2.0
 */
public class MarkSelection : IMarkSelection {

    /** The marked document. */
    private final IDocument fDocument;
    /** The offset of the mark selection. */
    private final int fOffset;
    /** The length of the mark selection. */
    private final int fLength;

    /**
     * Creates a MarkSelection.
     *
     * @param document the marked document
     * @param offset the offset of the mark
     * @param length the length of the mark, may be negative if caret before offset
     */
    public MarkSelection(IDocument document, int offset, int length) {
        fDocument= document;
        fOffset= offset;
        fLength= length;
    }

    /*
     * @see IMarkSelection#getDocument()
     */
    public IDocument getDocument() {
        return fDocument;
    }

    /*
     * @see IMarkSelection#getOffset()
     */
    public int getOffset() {
        return fOffset;
    }

    /*
     * @see IMarkSelection#getLength()
     */
    public int getLength() {
        return fLength;
    }

    /*
     * @see ISelection#isEmpty()
     */
    public bool isEmpty() {
        return fLength is 0;
    }

}