11320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci// Copyright 2014 The Chromium Authors. All rights reserved. 21320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci// Use of this source code is governed by a BSD-style license that can be 31320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci// found in the LICENSE file. 41320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 51320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci'use strict'; 61320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 71320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci/** 81320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci * Creates a new OpenPDFParamsParser. This parses the open pdf parameters 91320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci * passed in the url to set initial viewport settings for opening the pdf. 101320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci * @param {string} url to be parsed. 111320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci */ 121320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tuccifunction OpenPDFParamsParser(url) { 131320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci this.url_ = url; 141320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci this.urlParams = {}; 151320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci this.parseOpenPDFParams_(); 161320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci} 171320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 181320f92c476a1ad9d19dba2a48c72b75566198e9Primiano TucciOpenPDFParamsParser.prototype = { 191320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci /** 201320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci * @private 211320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci * Parse zoom parameter of open PDF parameters. If this 221320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci * parameter is passed while opening PDF then PDF should be opened 231320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci * at the specified zoom level. 241320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci * @param {number} zoom value. 251320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci */ 261320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci parseZoomParam_: function(paramValue) { 271320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci var paramValueSplit = paramValue.split(','); 281320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci if ((paramValueSplit.length != 1) && (paramValueSplit.length != 3)) 291320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci return; 301320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 311320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci // User scale of 100 means zoom value of 100% i.e. zoom factor of 1.0. 321320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci var zoomFactor = parseFloat(paramValueSplit[0]) / 100; 331320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci if (isNaN(zoomFactor)) 341320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci return; 351320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 361320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci // Handle #zoom=scale. 371320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci if (paramValueSplit.length == 1) { 381320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci this.urlParams['zoom'] = zoomFactor; 391320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci return; 401320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci } 411320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 421320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci // Handle #zoom=scale,left,top. 431320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci var position = {x: parseFloat(paramValueSplit[1]), 441320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci y: parseFloat(paramValueSplit[2])}; 451320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci this.urlParams['position'] = position; 461320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci this.urlParams['zoom'] = zoomFactor; 471320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci }, 481320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 491320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci /** 501320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci * @private 511320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci * Parse open PDF parameters. These parameters are mentioned in the url 521320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci * and specify actions to be performed when opening pdf files. 531320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci * See http://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/ 541320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci * pdfs/pdf_open_parameters.pdf for details. 551320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci */ 561320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci parseOpenPDFParams_: function() { 571320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci var originalUrl = this.url_; 581320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci var paramIndex = originalUrl.search('#'); 591320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci if (paramIndex == -1) 601320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci return; 611320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 621320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci var paramTokens = originalUrl.substring(paramIndex + 1).split('&'); 631320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci var paramsDictionary = {}; 641320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci for (var i = 0; i < paramTokens.length; ++i) { 651320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci var keyValueSplit = paramTokens[i].split('='); 661320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci if (keyValueSplit.length != 2) 671320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci continue; 681320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci paramsDictionary[keyValueSplit[0]] = keyValueSplit[1]; 691320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci } 701320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 711320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci if ('page' in paramsDictionary) { 721320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci // |pageNumber| is 1-based, but goToPage() take a zero-based page number. 731320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci var pageNumber = parseInt(paramsDictionary['page']); 741320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci if (!isNaN(pageNumber)) 751320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci this.urlParams['page'] = pageNumber - 1; 761320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci } 771320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 781320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci if ('zoom' in paramsDictionary) 791320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci this.parseZoomParam_(paramsDictionary['zoom']); 801320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci } 811320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci}; 82