addon-sdk/source/lib/sdk/window/events.js@6474c204b198 (annotated)
addon-sdk/source/lib/sdk/window/events.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | "use strict"; |
| michael@0 | 5 | |
| michael@0 | 6 | module.metadata = { |
| michael@0 | 7 | "stability": "unstable" |
| michael@0 | 8 | }; |
| michael@0 | 9 | |
| michael@0 | 10 | const { Ci } = require("chrome"); |
| michael@0 | 11 | const { observe } = require("../event/chrome"); |
| michael@0 | 12 | const { open } = require("../event/dom"); |
| michael@0 | 13 | const { windows } = require("../window/utils"); |
| michael@0 | 14 | const { filter, merge, map, expand } = require("../event/utils"); |
| michael@0 | 15 | |
| michael@0 | 16 | // Function registers single shot event listeners for relevant window events |
| michael@0 | 17 | // that forward events to exported event stream. |
| michael@0 | 18 | function eventsFor(window) { |
| michael@0 | 19 | let interactive = open(window, "DOMContentLoaded", { capture: true }); |
| michael@0 | 20 | let complete = open(window, "load", { capture: true }); |
| michael@0 | 21 | let states = merge([interactive, complete]); |
| michael@0 | 22 | let changes = filter(states, function({target}) target === window.document); |
| michael@0 | 23 | return map(changes, function({type, target}) { |
| michael@0 | 24 | return { type: type, target: target.defaultView } |
| michael@0 | 25 | }); |
| michael@0 | 26 | } |
| michael@0 | 27 | |
| michael@0 | 28 | // In addition to observing windows that are open we also observe windows |
| michael@0 | 29 | // that are already already opened in case they're in process of loading. |
| michael@0 | 30 | let opened = windows(null, { includePrivate: true }); |
| michael@0 | 31 | let currentEvents = merge(opened.map(eventsFor)); |
| michael@0 | 32 | |
| michael@0 | 33 | // Register system event listeners for top level window open / close. |
| michael@0 | 34 | function rename({type, target, data}) { |
| michael@0 | 35 | return { type: rename[type], target: target, data: data } |
| michael@0 | 36 | } |
| michael@0 | 37 | rename.domwindowopened = "open"; |
| michael@0 | 38 | rename.domwindowclosed = "close"; |
| michael@0 | 39 | |
| michael@0 | 40 | let openEvents = map(observe("domwindowopened"), rename); |
| michael@0 | 41 | let closeEvents = map(observe("domwindowclosed"), rename); |
| michael@0 | 42 | let futureEvents = expand(openEvents, function({target}) eventsFor(target)); |
| michael@0 | 43 | |
| michael@0 | 44 | let channel = merge([currentEvents, futureEvents, |
| michael@0 | 45 | openEvents, closeEvents]); |
| michael@0 | 46 | exports.events = channel; |
