domstubs.js

/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
/* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/ */

var sheet = {
  cssRules: [],
  insertRule: function(rule) {
    this.cssRules.push(rule);
  },
};

var style = {
  sheet: sheet,
};

function xmlEncode(s){
  var i = 0, ch;
  s = String(s);
  while (i < s.length && (ch = s[i]) !== '&' && ch !== '<' &&
    ch !== '\"' && ch !== '\n' && ch !== '\r' && ch !== '\t') {
      i++;
    }
    if (i >= s.length) {
      return s;
    }
    var buf = s.substring(0, i);
    while (i < s.length) {
      ch = s[i++];
      switch (ch) {
        case '&':
          buf += '&amp;';
          break;
          case '<':
            buf += '&lt;';
            break;
            case '\"':
              buf += '&quot;';
              break;
              case '\n':
                buf += '&#xA;';
                break;
                case '\r':
                  buf += '&#xD;';
                  break;
                  case '\t':
                    buf += '&#x9;';
                    break;
                    default:
                      buf += ch;
                      break;
                    }
                  }
                  return buf;
                }
                
                global.btoa = function btoa(chars) {
                  var digits =
                  'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
                  var buffer = '';
                  var i, n;
                  for (i = 0, n = chars.length; i < n; i += 3) {
                    var b1 = chars.charCodeAt(i) & 0xFF;
                    var b2 = chars.charCodeAt(i + 1) & 0xFF;
                    var b3 = chars.charCodeAt(i + 2) & 0xFF;
                    var d1 = b1 >> 2, d2 = ((b1 & 3) << 4) | (b2 >> 4);
                    var d3 = i + 1 < n ? ((b2 & 0xF) << 2) | (b3 >> 6) : 64;
                    var d4 = i + 2 < n ? (b3 & 0x3F) : 64;
                    buffer += (digits.charAt(d1) + digits.charAt(d2) +
                    digits.charAt(d3) + digits.charAt(d4));
                  }
                  return buffer;
                };
                
                function DOMElement(name) {
                  this.nodeName = name;
                  this.childNodes = [];
                  this.attributes = {};
                  this.textContent = '';
                }
                
                DOMElement.prototype = {
                  
                  setAttributeNS: function DOMElement_setAttributeNS(NS, name, value) {
                    value = value || '';
                    value = xmlEncode(value);
                    this.attributes[name] = value;
                  },
                  
                  appendChild: function DOMElement_appendChild(element) {
                    var childNodes = this.childNodes;
                    if (childNodes.indexOf(element) === -1) {
                      childNodes.push(element);
                    }
                  },
                  
                  toString: function DOMElement_toString() {
                    var attrList = [];
                    for (i in this.attributes) {
                      attrList.push(i + '="' + xmlEncode(this.attributes[i]) + '"');
                    }
                    
                    if (this.nodeName === 'svg:tspan' || this.nodeName === 'svg:style') {
                      var encText = xmlEncode(this.textContent);
                      return '<' + this.nodeName + ' ' + attrList.join(' ') + '>' +
                      encText + '</' + this.nodeName + '>';
                    } else if (this.nodeName === 'svg:svg') {
                      var ns = 'xmlns:xlink="http://www.w3.org/1999/xlink" ' +
                      'xmlns:svg="http://www.w3.org/2000/svg"'
                      return '<' + this.nodeName + ' ' + ns + ' ' + attrList.join(' ') + '>' +
                      this.childNodes.join('') + '</' + this.nodeName + '>';
                    } else {
                      return '<' + this.nodeName + ' ' + attrList.join(' ') + '>' +
                      this.childNodes.join('') + '</' + this.nodeName + '>';
                    }
                  },
                  
                  cloneNode: function DOMElement_cloneNode() {
                    var newNode = new DOMElement(this.nodeName);
                    newNode.childNodes = this.childNodes;
                    newNode.attributes = this.attributes;
                    newNode.textContent = this.textContent;
                    return newNode;
                  },
                }
                
                global.document = {
                  childNodes : [],
                  
                  getElementById: function (id) {
                    if (id === 'PDFJS_FONT_STYLE_TAG') {
                      return style;
                    }
                  },
                  
                  createElementNS: function (NS, element) {
                    var elObject = new DOMElement(element);
                    return elObject;
                  },
                };