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/**
 * @license
 * jsPDF viewerPreferences Plugin
 * @author Aras Abbasi (github.com/arasabbasi)
 * Licensed under the MIT License.
 * http://opensource.org/licenses/mit-license
 */

import { jsPDF } from "../jspdf.js";

/**
 * Adds the ability to set ViewerPreferences and by thus
 * controlling the way the document is to be presented on the
 * screen or in print.
 * @name viewerpreferences
 * @module
 */
(function(jsPDFAPI) {
 "use strict";
 /**
 * Set the ViewerPreferences of the generated PDF
 *
 * @name viewerPreferences
 * @function
 * @public
 * @param {Object} options Array with the ViewerPreferences 
 * Example: doc.viewerPreferences({"FitWindow":true}); 
 * 
 * You can set following preferences: 
 * 
 * HideToolbar (boolean) 
 * Default value: false 
 * 
 * HideMenubar (boolean) 
 * Default value: false. 
 * 
 * HideWindowUI (boolean) 
 * Default value: false. 
 * 
 * FitWindow (boolean) 
 * Default value: false. 
 * 
 * CenterWindow (boolean) 
 * Default value: false 
 * 
 * DisplayDocTitle (boolean) 
 * Default value: false. 
 * 
 * NonFullScreenPageMode (string) 
 * Possible values: UseNone, UseOutlines, UseThumbs, UseOC 
 * Default value: UseNone 
 * 
 * Direction (string) 
 * Possible values: L2R, R2L 
 * Default value: L2R. 
 * 
 * ViewArea (string) 
 * Possible values: MediaBox, CropBox, TrimBox, BleedBox, ArtBox 
 * Default value: CropBox. 
 * 
 * ViewClip (string) 
 * Possible values: MediaBox, CropBox, TrimBox, BleedBox, ArtBox 
 * Default value: CropBox 
 * 
 * PrintArea (string) 
 * Possible values: MediaBox, CropBox, TrimBox, BleedBox, ArtBox 
 * Default value: CropBox 
 * 
 * PrintClip (string) 
 * Possible values: MediaBox, CropBox, TrimBox, BleedBox, ArtBox 
 * Default value: CropBox. 
 * 
 * PrintScaling (string) 
 * Possible values: AppDefault, None 
 * Default value: AppDefault. 
 * 
 * Duplex (string) 
 * Possible values: Simplex, DuplexFlipLongEdge, DuplexFlipShortEdge
 * Default value: none 
 * 
 * PickTrayByPDFSize (boolean) 
 * Default value: false 
 * 
 * PrintPageRange (Array) 
 * Example: [[1,5], [7,9]] 
 * Default value: as defined by PDF viewer application 
 * 
 * NumCopies (Number) 
 * Possible values: 1, 2, 3, 4, 5 
 * Default value: 1 
 * 
 * For more information see the PDF Reference, sixth edition on Page 577
 * @param {boolean} doReset True to reset the settings
 * @function
 * @returns jsPDF jsPDF-instance
 * @example
 * var doc = new jsPDF()
 * doc.text('This is a test', 10, 10)
 * doc.viewerPreferences({'FitWindow': true}, true)
 * doc.save("viewerPreferences.pdf")
 *
 * // Example printing 10 copies, using cropbox, and hiding UI.
 * doc.viewerPreferences({
 * 'HideWindowUI': true,
 * 'PrintArea': 'CropBox',
 * 'NumCopies': 10
 * })
 */
 jsPDFAPI.viewerPreferences = function(options, doReset) {
 options = options || {};
 doReset = doReset || false;

var configuration;
    var configurationTemplate = {
      HideToolbar: {
        defaultValue: false,
        value: false,
        type: "boolean",
        explicitSet: false,
        valueSet: [true, false],
        pdfVersion: 1.3
      },
      HideMenubar: {
        defaultValue: false,
        value: false,
        type: "boolean",
        explicitSet: false,
        valueSet: [true, false],
        pdfVersion: 1.3
      },
      HideWindowUI: {
        defaultValue: false,
        value: false,
        type: "boolean",
        explicitSet: false,
        valueSet: [true, false],
        pdfVersion: 1.3
      },
      FitWindow: {
        defaultValue: false,
        value: false,
        type: "boolean",
        explicitSet: false,
        valueSet: [true, false],
        pdfVersion: 1.3
      },
      CenterWindow: {
        defaultValue: false,
        value: false,
        type: "boolean",
        explicitSet: false,
        valueSet: [true, false],
        pdfVersion: 1.3
      },
      DisplayDocTitle: {
        defaultValue: false,
        value: false,
        type: "boolean",
        explicitSet: false,
        valueSet: [true, false],
        pdfVersion: 1.4
      },
      NonFullScreenPageMode: {
        defaultValue: "UseNone",
        value: "UseNone",
        type: "name",
        explicitSet: false,
        valueSet: ["UseNone", "UseOutlines", "UseThumbs", "UseOC"],
        pdfVersion: 1.3
      },
      Direction: {
        defaultValue: "L2R",
        value: "L2R",
        type: "name",
        explicitSet: false,
        valueSet: ["L2R", "R2L"],
        pdfVersion: 1.3
      },
      ViewArea: {
        defaultValue: "CropBox",
        value: "CropBox",
        type: "name",
        explicitSet: false,
        valueSet: ["MediaBox", "CropBox", "TrimBox", "BleedBox", "ArtBox"],
        pdfVersion: 1.4
      },
      ViewClip: {
        defaultValue: "CropBox",
        value: "CropBox",
        type: "name",
        explicitSet: false,
        valueSet: ["MediaBox", "CropBox", "TrimBox", "BleedBox", "ArtBox"],
        pdfVersion: 1.4
      },
      PrintArea: {
        defaultValue: "CropBox",
        value: "CropBox",
        type: "name",
        explicitSet: false,
        valueSet: ["MediaBox", "CropBox", "TrimBox", "BleedBox", "ArtBox"],
        pdfVersion: 1.4
      },
      PrintClip: {
        defaultValue: "CropBox",
        value: "CropBox",
        type: "name",
        explicitSet: false,
        valueSet: ["MediaBox", "CropBox", "TrimBox", "BleedBox", "ArtBox"],
        pdfVersion: 1.4
      },
      PrintScaling: {
        defaultValue: "AppDefault",
        value: "AppDefault",
        type: "name",
        explicitSet: false,
        valueSet: ["AppDefault", "None"],
        pdfVersion: 1.6
      },
      Duplex: {
        defaultValue: "",
        value: "none",
        type: "name",
        explicitSet: false,
        valueSet: [
          "Simplex",
          "DuplexFlipShortEdge",
          "DuplexFlipLongEdge",
          "none"
        ],
        pdfVersion: 1.7
      },
      PickTrayByPDFSize: {
        defaultValue: false,
        value: false,
        type: "boolean",
        explicitSet: false,
        valueSet: [true, false],
        pdfVersion: 1.7
      },
      PrintPageRange: {
        defaultValue: "",
        value: "",
        type: "array",
        explicitSet: false,
        valueSet: null,
        pdfVersion: 1.7
      },
      NumCopies: {
        defaultValue: 1,
        value: 1,
        type: "integer",
        explicitSet: false,
        valueSet: null,
        pdfVersion: 1.7
      }
    };

var configurationKeys = Object.keys(configurationTemplate);

var rangeArray = [];
    var i = 0;
    var j = 0;
    var k = 0;
    var isValid;

var method;
    var value;

function arrayContainsElement(array, element) {
      var iterator;
      var result = false;

for (iterator = 0; iterator < array.length; iterator += 1) {
 if (array[iterator] === element) {
 result = true;
 }
 }
 return result;
 }

if (this.internal.viewerpreferences === undefined) {
      this.internal.viewerpreferences = {};
      this.internal.viewerpreferences.configuration = JSON.parse(
        JSON.stringify(configurationTemplate)
      );
      this.internal.viewerpreferences.isSubscribed = false;
    }
    configuration = this.internal.viewerpreferences.configuration;

if (options === "reset" || doReset === true) {
      var len = configurationKeys.length;

for (k = 0; k < len; k += 1) {
 configuration[configurationKeys[k]].value =
 configuration[configurationKeys[k]].defaultValue;
 configuration[configurationKeys[k]].explicitSet = false;
 }
 }

if (typeof options === "object") {
 for (method in options) {
 value = options[method];
 if (
 arrayContainsElement(configurationKeys, method) &&
 value !== undefined
 ) {
 if (
 configuration[method].type === "boolean" &&
 typeof value === "boolean"
 ) {
 configuration[method].value = value;
 } else if (
 configuration[method].type === "name" &&
 arrayContainsElement(configuration[method].valueSet, value)
 ) {
 configuration[method].value = value;
 } else if (
 configuration[method].type === "integer" &&
 Number.isInteger(value)
 ) {
 configuration[method].value = value;
 } else if (configuration[method].type === "array") {
 for (i = 0; i < value.length; i += 1) {
 isValid = true;
 if (value[i].length === 1 && typeof value[i][0] === "number") {
 rangeArray.push(String(value[i] - 1));
 } else if (value[i].length > 1) {
 for (j = 0; j < value[i].length; j += 1) {
 if (typeof value[i][j] !== "number") {
 isValid = false;
 }
 }
 if (isValid === true) {
 rangeArray.push([value[i][0] - 1, value[i][1] - 1].join(" "));
 }
 }
 }
 configuration[method].value = "[" + rangeArray.join(" ") + "]";
 } else {
 configuration[method].value = configuration[method].defaultValue;
 }

configuration[method].explicitSet = true;
        }
      }
    }

if (this.internal.viewerpreferences.isSubscribed === false) {
 this.internal.events.subscribe("putCatalog", function() {
 var pdfDict = [];
 var vPref;
 for (vPref in configuration) {
 if (configuration[vPref].explicitSet === true) {
 if (configuration[vPref].type === "name") {
 pdfDict.push("/" + vPref + " /" + configuration[vPref].value);
 } else {
 pdfDict.push("/" + vPref + " " + configuration[vPref].value);
 }
 }
 }
 if (pdfDict.length !== 0) {
 this.internal.write(
 "/ViewerPreferences\n<<\n" + pdfDict.join("\n") + "\n>>"
 );
 }
 });
 this.internal.viewerpreferences.isSubscribed = true;
 }

this.internal.viewerpreferences.configuration = configuration;
    return this;
  };
})(jsPDF.API);