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/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2024 Apryse Group NV
    Authors: Apryse Software.

    This program is offered under a commercial and under the AGPL license.
    For commercial licensing, contact us at https://itextpdf.com/sales.  For AGPL licensing, see below.

    AGPL licensing:
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    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 .
 */
package com.itextpdf.kernel.pdf;

import com.itextpdf.kernel.exceptions.PdfException;
import com.itextpdf.kernel.exceptions.KernelExceptionMessageConstant;

public class PdfViewerPreferences extends PdfObjectWrapper {


	public enum PdfViewerPreferencesConstants {
        /**
         * PageMode constant for {@link PdfName#NonFullScreenPageMode}.
         */
        USE_NONE,
        /**
         * PageMode constant for {@link PdfName#NonFullScreenPageMode}.
         */
        USE_OUTLINES,
        /**
         * PageMode constant for {@link PdfName#NonFullScreenPageMode}.
         */
        USE_THUMBS,
        /**
         * PageMode constant for {@link PdfName#NonFullScreenPageMode}.
         */
        USE_OC,
        /**
         * Direction constant for {@link PdfName#Direction}.
         */
        LEFT_TO_RIGHT,
        /**
         * Direction constant for {@link PdfName#Direction}.
         */
        RIGHT_TO_LEFT,
        /**
         * PageBoundary constant for {@link #VIEW_AREA}, {@link #VIEW_CLIP}, {@link #PRINT_AREA}, {@link #PRINT_CLIP}.
         */
        MEDIA_BOX,
        /**
         * PageBoundary constant for {@link #VIEW_AREA}, {@link #VIEW_CLIP}, {@link #PRINT_AREA}, {@link #PRINT_CLIP}.
         */
        CROP_BOX,
        /**
         * PageBoundary constant for {@link #VIEW_AREA}, {@link #VIEW_CLIP}, {@link #PRINT_AREA}, {@link #PRINT_CLIP}.
         */
        BLEED_BOX,
        /**
         * PageBoundary constant for {@link #VIEW_AREA}, {@link #VIEW_CLIP}, {@link #PRINT_AREA}, {@link #PRINT_CLIP}.
         */
        TRIM_BOX,
        /**
         * PageBoundary constant for {@link #VIEW_AREA}, {@link #VIEW_CLIP}, {@link #PRINT_AREA}, {@link #PRINT_CLIP}.
         */
        ART_BOX,
        /**
         * ViewArea constant.
         */
        VIEW_AREA,
        /**
         * ViewClip constant.
         */
        VIEW_CLIP,
        /**
         * PrintArea constant.
         */
        PRINT_AREA,
        /**
         * PrintClip constant.
         */
        PRINT_CLIP,
        /**
         * Page scaling option constant for {@link PdfName#PrintScaling}.
         */
        NONE,
        /**
         * Page scaling option constant for {@link PdfName#PrintScaling}.
         */
        APP_DEFAULT,
        /**
         * The paper handling option constant for {@link PdfName#Duplex}.
         */
        SIMPLEX,
        /**
         * The paper handling option constant for {@link PdfName#Duplex}.
         */
        DUPLEX_FLIP_SHORT_EDGE,
        /**
         * The paper handling option constant for {@link PdfName#Duplex}.
         */
        DUPLEX_FLIP_LONG_EDGE
    }

    public PdfViewerPreferences() {
        this(new PdfDictionary());
    }

    public PdfViewerPreferences(PdfDictionary pdfObject) {
        super(pdfObject);
    }

    /**
     * This method sets HideToolBar flag to true or false
     *
     * @param hideToolbar HideToolBar flag's boolean value
     * @return current instance of {@link PdfViewerPreferences}
     */
    public PdfViewerPreferences setHideToolbar(boolean hideToolbar) {
        return put(PdfName.HideToolbar, PdfBoolean.valueOf(hideToolbar));
    }

    /**
     * This method sets HideMenuBar flag to true or false
     *
     * @param hideMenubar HideMenuBar flag's boolean value
     * @return current instance of {@link PdfViewerPreferences}
     */
    public PdfViewerPreferences setHideMenubar(boolean hideMenubar) {
        return put(PdfName.HideMenubar, PdfBoolean.valueOf(hideMenubar));
    }

    /**
     * This method sets HideWindowUI flag to true or false
     *
     * @param hideWindowUI HideWindowUI flag's boolean value
     * @return current instance of {@link PdfViewerPreferences}
     */
    public PdfViewerPreferences setHideWindowUI(boolean hideWindowUI) {
        return put(PdfName.HideWindowUI, PdfBoolean.valueOf(hideWindowUI));
    }

    /**
     * This method sets FitWindow flag to true or false
     *
     * @param fitWindow FitWindow flag's boolean value
     * @return current instance of {@link PdfViewerPreferences}
     */
    public PdfViewerPreferences setFitWindow(boolean fitWindow) {
        return put(PdfName.FitWindow, PdfBoolean.valueOf(fitWindow));
    }

    /**
     * This method sets CenterWindow flag to true or false
     *
     * @param centerWindow CenterWindow flag's boolean value
     * @return current instance of {@link PdfViewerPreferences}
     */
    public PdfViewerPreferences setCenterWindow(boolean centerWindow) {
        return put(PdfName.CenterWindow, PdfBoolean.valueOf(centerWindow));
    }

    /**
     * This method sets DisplayDocTitle flag to true or false
     *
     * @param displayDocTitle DisplayDocTitle flag's boolean value
     * @return current instance of {@link PdfViewerPreferences}
     */
    public PdfViewerPreferences setDisplayDocTitle(boolean displayDocTitle) {
        return put(PdfName.DisplayDocTitle, PdfBoolean.valueOf(displayDocTitle));
    }

    /**
     * This method sets NonFullScreenPageMode property. Allowed values are UseNone, UseOutlines, useThumbs, UseOC.
     * This entry is meaningful only if the value of the PageMode entry in the Catalog dictionary is FullScreen
     *
     * @param nonFullScreenPageMode NonFullScreenPageMode property type value
     * @return current instance of {@link PdfViewerPreferences}
     */
    public PdfViewerPreferences setNonFullScreenPageMode(PdfViewerPreferencesConstants nonFullScreenPageMode) {
        switch (nonFullScreenPageMode) {
            case USE_NONE:
                put(PdfName.NonFullScreenPageMode, PdfName.UseNone);
                break;
            case USE_OUTLINES:
                put(PdfName.NonFullScreenPageMode, PdfName.UseOutlines);
                break;
            case USE_THUMBS:
                put(PdfName.NonFullScreenPageMode, PdfName.UseThumbs);
                break;
            case USE_OC:
                put(PdfName.NonFullScreenPageMode, PdfName.UseOC);
                break;
            default:
        }
        return this;
    }

    /**
     * This method sets predominant reading order of text.
     *
     * @param direction reading order type value
     * @return current instance of {@link PdfViewerPreferences}
     */
    public PdfViewerPreferences setDirection(PdfViewerPreferencesConstants direction) {
        switch (direction) {
            case LEFT_TO_RIGHT:
                put(PdfName.Direction, PdfName.L2R);
                break;
            case RIGHT_TO_LEFT:
                put(PdfName.Direction, PdfName.R2L);
                break;
            default:
        }
        return this;
    }

    /**
     * This method sets the name of the page boundary representing the area of a page that shall be displayed when
     * viewing the document on the screen.
     * Deprecated in PDF 2.0.
     *
     * @param pageBoundary page boundary type value
     * @return current instance of {@link PdfViewerPreferences}
     */
    public PdfViewerPreferences setViewArea(PdfViewerPreferencesConstants pageBoundary) {
        return setPageBoundary(PdfViewerPreferencesConstants.VIEW_AREA, pageBoundary);
    }

    /**
     * This method sets the name of the page boundary to which the contents of a page shall be clipped when
     * viewing the document on the screen.
     * Deprecated in PDF 2.0.
     *
     * @param pageBoundary page boundary type value
     * @return current instance of {@link PdfViewerPreferences}
     */
    public PdfViewerPreferences setViewClip(PdfViewerPreferencesConstants pageBoundary) {
        return setPageBoundary(PdfViewerPreferencesConstants.VIEW_CLIP, pageBoundary);
    }

    /**
     * This method sets the name of the page boundary representing the area of a page that shall be
     * rendered when printing the document.
     * Deprecated in PDF 2.0.
     *
     * @param pageBoundary page boundary type value
     * @return current instance of {@link PdfViewerPreferences}
     */
    public PdfViewerPreferences setPrintArea(PdfViewerPreferencesConstants pageBoundary) {
        return setPageBoundary(PdfViewerPreferencesConstants.PRINT_AREA, pageBoundary);
    }

    /**
     * This method sets the name of the page boundary to which the contents of a page shall be clipped when
     * printing the document.
     * Deprecated in PDF 2.0.
     *
     * @param pageBoundary page boundary type value
     * @return current instance of {@link PdfViewerPreferences}
     */
    public PdfViewerPreferences setPrintClip(PdfViewerPreferencesConstants pageBoundary) {
        return setPageBoundary(PdfViewerPreferencesConstants.PRINT_CLIP, pageBoundary);
    }

    /**
     * This method sets the page scaling option that shall be selected when a print dialog is displayed for this
     * document. Valid values are None and AppDefault.
     *
     * @param printScaling page scaling option's type value
     * @return current instance of {@link PdfViewerPreferences}
     */
    public PdfViewerPreferences setPrintScaling(PdfViewerPreferencesConstants printScaling) {
        switch (printScaling) {
            case NONE:
                put(PdfName.PrintScaling, PdfName.None);
                break;
            case APP_DEFAULT:
                put(PdfName.PrintScaling, PdfName.AppDefault);
                break;
            default:
        }

        return this;
    }

    /**
     * This method sets the paper handling option that shall be used when printing the file from the print dialog.
     * The following values are valid: Simplex, DuplexFlipShortEdge, DuplexFlipLongEdge.
     *
     * @param duplex paper handling option's type value
     * @return current instance of {@link PdfViewerPreferences}
     */
    public PdfViewerPreferences setDuplex(PdfViewerPreferencesConstants duplex) {
        switch (duplex) {
            case SIMPLEX:
                put(PdfName.Duplex, PdfName.Simplex);
                break;
            case DUPLEX_FLIP_SHORT_EDGE:
                put(PdfName.Duplex, PdfName.DuplexFlipShortEdge);
                break;
            case DUPLEX_FLIP_LONG_EDGE:
                put(PdfName.Duplex, PdfName.DuplexFlipLongEdge);
                break;
            default:
        }
        return this;
    }

    /**
     * This method sets PickTrayByPDFSize flag to true or false.
     *
     * @param pickTrayByPdfSize PickTrayByPDFSize flag's boolean value
     * @return current instance of {@link PdfViewerPreferences}
     */
    public PdfViewerPreferences setPickTrayByPDFSize(boolean pickTrayByPdfSize) {
        return put(PdfName.PickTrayByPDFSize, PdfBoolean.valueOf(pickTrayByPdfSize));
    }

    /**
     * This method sets the page numbers used to initialize the print dialog box when the file is printed.
     *
     * @param printPageRange the array of page numbers
     * @return current instance of {@link PdfViewerPreferences}
     */
    public PdfViewerPreferences setPrintPageRange(int[] printPageRange) {
        return put(PdfName.PrintPageRange, new PdfArray(printPageRange));
    }

    /**
     * This method sets the number of copies that shall be printed when the print dialog is opened for this file.
     *
     * @param numCopies the number of copies to print when the print dialog is opened
     * @return current instance of {@link PdfViewerPreferences}
     */
    public PdfViewerPreferences setNumCopies(int numCopies) {
        return put(PdfName.NumCopies, new PdfNumber(numCopies));
    }

    /**
     * PDF 2.0. Sets an array of names of Viewer preference settings that
     * shall be enforced by PDF processors and that shall not be overridden by
     * subsequent selections in the application user interface
     *
     * @param enforce array of names specifying settings to enforce in the PDF processors
     * @return this {@link PdfViewerPreferences} instance
     */
    public PdfViewerPreferences setEnforce(PdfArray enforce) {
        for (int i = 0; i < enforce.size(); i++) {
            PdfName curEnforce = enforce.getAsName(i);
            if (curEnforce == null) {
                throw new IllegalArgumentException("Enforce array shall contain PdfName entries");
            } else if (PdfName.PrintScaling.equals(curEnforce)) {
                // This name may appear in the Enforce array only if the corresponding entry in
                // the viewer preferences dictionary specifies a valid value other than AppDefault
                PdfName curPrintScaling = getPdfObject().getAsName(PdfName.PrintScaling);
                if (curPrintScaling == null || PdfName.AppDefault.equals(curPrintScaling)) {
                    throw new PdfException(KernelExceptionMessageConstant.PRINT_SCALING_ENFORCE_ENTRY_INVALID);
                }
            }
        }
        return put(PdfName.Enforce, enforce);
    }

    /**
     * PDF 2.0. Gets an array of names of Viewer preference settings that
     * shall be enforced by PDF processors and that shall not be overridden by
     * subsequent selections in the application user interface
     *
     * @return array of names specifying settings to enforce in the PDF processors
     */
    public PdfArray getEnforce() {
        return getPdfObject().getAsArray(PdfName.Enforce);
    }

    public PdfViewerPreferences put(PdfName key, PdfObject value) {
        getPdfObject().put(key, value);
        setModified();
        return this;
    }

    @Override
    protected boolean isWrappedObjectMustBeIndirect() {
        return false;
    }

    private PdfViewerPreferences setPageBoundary(PdfViewerPreferencesConstants viewerPreferenceType, PdfViewerPreferencesConstants pageBoundary) {
        PdfName type = null;
        switch (viewerPreferenceType) {
            case VIEW_AREA :
                type = PdfName.ViewArea;
                break;
            case VIEW_CLIP :
                type = PdfName.ViewClip;
                break;
            case PRINT_AREA :
                type = PdfName.PrintArea;
                break;
            case PRINT_CLIP :
                type = PdfName.PrintClip;
                break;
            default:
        }
        if (type != null) {
            switch (pageBoundary) {
                case MEDIA_BOX:
                    put(type, PdfName.MediaBox);
                    break;
                case CROP_BOX:
                    put(type, PdfName.CropBox);
                    break;
                case BLEED_BOX:
                    put(type, PdfName.BleedBox);
                    break;
                case TRIM_BOX:
                    put(type, PdfName.TrimBox);
                    break;
                case ART_BOX:
                    put(type, PdfName.ArtBox);
                    break;
                default:
            }
        }

        return this;
    }
}




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