/*
 *
 * This file is part of the iText (R) project.
    Copyright (c) 1998-2017 iText Group NV
 * Authors: Bruno Lowagie, Paulo Soares, et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License version 3
 * as published by the Free Software Foundation with the addition of the
 * following permission added to Section 15 as permitted in Section 7(a):
 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
 * ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
 * OF THIRD PARTY RIGHTS
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Affero General Public License for more details.
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
 * http://itextpdf.com/terms-of-use/
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License,
 * a covered work must retain the producer line in every PDF that is created
 * or manipulated using iText.
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the iText software without
 * disclosing the source code of your own applications.
 * These activities include: offering paid services to customers as an ASP,
 * serving PDFs on the fly in a web application, shipping iText with a closed
 * source product.
 *
 * For more information, please contact iText Software Corp. at this
 * address: sales@itextpdf.com
 */
package com.itextpdf.text.pdf.pdfcleanup;

import com.itextpdf.text.pdf.PdfString;
import com.itextpdf.text.pdf.parser.Vector;

/**
 * Represents a chunk of a pdf content stream which is under cleanup processing. E.g. image, text.
 */
abstract class PdfCleanUpContentChunk {

    private boolean visible;

    public PdfCleanUpContentChunk(boolean visible) {
        this.visible = visible;
    }

    public boolean isVisible() {
        return visible;
    }

    /**
     * Represents a text fragment from a pdf content stream.
     */
    public static class Text extends PdfCleanUpContentChunk {

        private PdfString text;
        private float startX;
        private float endX;
        private int numOfStrTextBelongsTo;

        public Text(PdfString text, Vector startLocation, Vector endLocation, boolean visible, int numOfStrTextBelongsTo) {
            super(visible);
            this.text = text;
            this.startX = startLocation.get(0);
            this.endX = endLocation.get(0);
            this.numOfStrTextBelongsTo = numOfStrTextBelongsTo;
        }

        public PdfString getText() {
            return text;
        }

        public float getStartX() {
            return startX;
        }

        public float getEndX() {
            return endX;
        }

        public int getNumOfStrTextBelongsTo() {
            return numOfStrTextBelongsTo;
        }
    }

    /**
     * Represents an image used in a pdf content stream.
     */
    public static class Image extends PdfCleanUpContentChunk {

        private byte[] newImageData;

        public Image(boolean visible, byte[] newImageData) {
            super(visible);
            this.newImageData = newImageData;
        }

        public byte[] getNewImageData() {
            return newImageData;
        }
    }
}