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  1. /*******************************************************************************
  2. µBlock - a browser extension to block requests.
  3. Copyright (C) 2014 The µBlock authors
  4. This program is free software: you can redistribute it and/or modify
  5. it under the terms of the GNU General Public License as published by
  6. the Free Software Foundation, either version 3 of the License, or
  7. (at your option) any later version.
  8. This program is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11. GNU General Public License for more details.
  12. You should have received a copy of the GNU General Public License
  13. along with this program. If not, see {http://www.gnu.org/licenses/}.
  14. Home: https://github.com/gorhill/uBlock
  15. */
  16. /* global sendAsyncMessage */
  17. // For background page or non-background pages
  18. /******************************************************************************/
  19. (function() {
  20. 'use strict';
  21. self.vAPI = self.vAPI || {};
  22. /******************************************************************************/
  23. // http://www.w3.org/International/questions/qa-scripts#directions
  24. var setScriptDirection = function(language) {
  25. document.body.setAttribute(
  26. 'dir',
  27. ['ar', 'he', 'fa', 'ps', 'ur'].indexOf(language) !== -1 ? 'rtl' : 'ltr'
  28. );
  29. };
  30. /******************************************************************************/
  31. vAPI.download = function(details) {
  32. if ( !details.url ) {
  33. return;
  34. }
  35. var a = document.createElement('a');
  36. a.href = details.url;
  37. a.setAttribute('download', details.filename || '');
  38. a.dispatchEvent(new MouseEvent('click'));
  39. };
  40. /******************************************************************************/
  41. vAPI.insertHTML = (function() {
  42. const {classes: Cc, interfaces: Ci} = Components;
  43. const parser = Cc['@mozilla.org/parserutils;1'].getService(Ci.nsIParserUtils);
  44. const io = Cc['@mozilla.org/network/io-service;1'].getService(Ci.nsIIOService);
  45. return function(node, html) {
  46. while ( node.firstChild ) {
  47. node.removeChild(node.firstChild);
  48. }
  49. node.appendChild(parser.parseFragment(
  50. html,
  51. parser.SanitizerAllowStyle,
  52. false,
  53. io.newURI(document.baseURI, null, null),
  54. document.documentElement
  55. ));
  56. };
  57. })();
  58. /******************************************************************************/
  59. vAPI.getURL = function(path) {
  60. return 'chrome://' + location.host + '/content/' + path.replace(/^\/+/, '');
  61. };
  62. /******************************************************************************/
  63. vAPI.i18n = (function() {
  64. var stringBundle = Components.classes['@mozilla.org/intl/stringbundle;1']
  65. .getService(Components.interfaces.nsIStringBundleService)
  66. .createBundle('chrome://' + location.host + '/locale/messages.properties');
  67. return function(s) {
  68. try {
  69. return stringBundle.GetStringFromName(s);
  70. } catch (ex) {
  71. return '';
  72. }
  73. };
  74. })();
  75. setScriptDirection(navigator.language);
  76. /******************************************************************************/
  77. vAPI.closePopup = function() {
  78. sendAsyncMessage(location.host + ':closePopup');
  79. };
  80. /******************************************************************************/
  81. // A localStorage-like object which should be accessible from the
  82. // background page or auxiliary pages.
  83. // This storage is optional, but it is nice to have, for a more polished user
  84. // experience.
  85. vAPI.localStorage = {
  86. key: function(){},
  87. getItem: function(){},
  88. setItem: function(){},
  89. removeItem: function(){}
  90. };
  91. /******************************************************************************/
  92. })();
  93. /******************************************************************************/