The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/addon-sdk/source/lib/sdk/frame/hidden-frame.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,116 @@
     1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.7 +
     1.8 +"use strict";
     1.9 +
    1.10 +module.metadata = {
    1.11 +  "stability": "experimental"
    1.12 +};
    1.13 +
    1.14 +const { Cc, Ci } = require("chrome");
    1.15 +const errors = require("../deprecated/errors");
    1.16 +const { Class } = require("../core/heritage");
    1.17 +const { List, addListItem, removeListItem } = require("../util/list");
    1.18 +const { EventTarget } = require("../event/target");
    1.19 +const { emit } = require("../event/core");
    1.20 +const { create: makeFrame } = require("./utils");
    1.21 +const { defer } = require("../core/promise");
    1.22 +const { when: unload } = require("../system/unload");
    1.23 +const { validateOptions, getTypeOf } = require("../deprecated/api-utils");
    1.24 +const { window } = require("../addon/window");
    1.25 +const { fromIterator } = require("../util/array");
    1.26 +
    1.27 +// This cache is used to access friend properties between functions
    1.28 +// without exposing them on the public API.
    1.29 +let cache = new Set();
    1.30 +let elements = new WeakMap();
    1.31 +
    1.32 +function contentLoaded(target) {
    1.33 +  var deferred = defer();
    1.34 +  target.addEventListener("DOMContentLoaded", function DOMContentLoaded(event) {
    1.35 +    // "DOMContentLoaded" events from nested frames propagate up to target,
    1.36 +    // ignore events unless it's DOMContentLoaded for the given target.
    1.37 +    if (event.target === target || event.target === target.contentDocument) {
    1.38 +      target.removeEventListener("DOMContentLoaded", DOMContentLoaded, false);
    1.39 +      deferred.resolve(target);
    1.40 +    }
    1.41 +  }, false);
    1.42 +  return deferred.promise;
    1.43 +}
    1.44 +
    1.45 +function FrameOptions(options) {
    1.46 +  options = options || {}
    1.47 +  return validateOptions(options, FrameOptions.validator);
    1.48 +}
    1.49 +FrameOptions.validator = {
    1.50 +  onReady: {
    1.51 +    is: ["undefined", "function", "array"],
    1.52 +    ok: function(v) {
    1.53 +      if (getTypeOf(v) === "array") {
    1.54 +        // make sure every item is a function
    1.55 +        return v.every(function (item) typeof(item) === "function")
    1.56 +      }
    1.57 +      return true;
    1.58 +    }
    1.59 +  },
    1.60 +  onUnload: {
    1.61 +    is: ["undefined", "function"]
    1.62 +  }
    1.63 +};
    1.64 +
    1.65 +var HiddenFrame = Class({
    1.66 +  extends: EventTarget,
    1.67 +  initialize: function initialize(options) {
    1.68 +    options = FrameOptions(options);
    1.69 +    EventTarget.prototype.initialize.call(this, options);
    1.70 +  },
    1.71 +  get element() {
    1.72 +    return elements.get(this);
    1.73 +  },
    1.74 +  toString: function toString() {
    1.75 +    return "[object Frame]"
    1.76 +  }
    1.77 +});
    1.78 +exports.HiddenFrame = HiddenFrame
    1.79 +
    1.80 +function addHidenFrame(frame) {
    1.81 +  if (!(frame instanceof HiddenFrame))
    1.82 +    throw Error("The object to be added must be a HiddenFrame.");
    1.83 +
    1.84 +  // This instance was already added.
    1.85 +  if (cache.has(frame)) return frame;
    1.86 +  else cache.add(frame);
    1.87 +
    1.88 +  let element = makeFrame(window.document, {
    1.89 +    nodeName: "iframe",
    1.90 +    type: "content",
    1.91 +    allowJavascript: true,
    1.92 +    allowPlugins: true,
    1.93 +    allowAuth: true,
    1.94 +  });
    1.95 +  elements.set(frame, element);
    1.96 +
    1.97 +  contentLoaded(element).then(function onFrameReady(element) {
    1.98 +    emit(frame, "ready");
    1.99 +  }, console.exception);
   1.100 +
   1.101 +  return frame;
   1.102 +}
   1.103 +exports.add = addHidenFrame
   1.104 +
   1.105 +function removeHiddenFrame(frame) {
   1.106 +  if (!(frame instanceof HiddenFrame))
   1.107 +    throw Error("The object to be removed must be a HiddenFrame.");
   1.108 +
   1.109 +  if (!cache.has(frame)) return;
   1.110 +
   1.111 +  // Remove from cache before calling in order to avoid loop
   1.112 +  cache.delete(frame);
   1.113 +  emit(frame, "unload")
   1.114 +  let element = frame.element
   1.115 +  if (element) element.parentNode.removeChild(element)
   1.116 +}
   1.117 +exports.remove = removeHiddenFrame;
   1.118 +
   1.119 +unload(function() fromIterator(cache).forEach(removeHiddenFrame));