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/window/events.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,46 @@
     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 +"use strict";
     1.8 +
     1.9 +module.metadata = {
    1.10 +  "stability": "unstable"
    1.11 +};
    1.12 +
    1.13 +const { Ci } = require("chrome");
    1.14 +const { observe } = require("../event/chrome");
    1.15 +const { open } = require("../event/dom");
    1.16 +const { windows } = require("../window/utils");
    1.17 +const { filter, merge, map, expand } = require("../event/utils");
    1.18 +
    1.19 +// Function registers single shot event listeners for relevant window events
    1.20 +// that forward events to exported event stream.
    1.21 +function eventsFor(window) {
    1.22 +  let interactive = open(window, "DOMContentLoaded", { capture: true });
    1.23 +  let complete = open(window, "load", { capture: true });
    1.24 +  let states = merge([interactive, complete]);
    1.25 +  let changes = filter(states, function({target}) target === window.document);
    1.26 +  return map(changes, function({type, target}) {
    1.27 +    return { type: type, target: target.defaultView }
    1.28 +  });
    1.29 +}
    1.30 +
    1.31 +// In addition to observing windows that are open we also observe windows
    1.32 +// that are already already opened in case they're in process of loading.
    1.33 +let opened = windows(null, { includePrivate: true });
    1.34 +let currentEvents = merge(opened.map(eventsFor));
    1.35 +
    1.36 +// Register system event listeners for top level window open / close.
    1.37 +function rename({type, target, data}) {
    1.38 +  return { type: rename[type], target: target, data: data }
    1.39 +}
    1.40 +rename.domwindowopened = "open";
    1.41 +rename.domwindowclosed = "close";
    1.42 +
    1.43 +let openEvents = map(observe("domwindowopened"), rename);
    1.44 +let closeEvents = map(observe("domwindowclosed"), rename);
    1.45 +let futureEvents = expand(openEvents, function({target}) eventsFor(target));
    1.46 +
    1.47 +let channel = merge([currentEvents, futureEvents,
    1.48 +                     openEvents, closeEvents]);
    1.49 +exports.events = channel;