mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
47 lines
1.8 KiB
JavaScript
47 lines
1.8 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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module.metadata = {
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"stability": "unstable"
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};
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const { Ci } = require("chrome");
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const { observe } = require("../event/chrome");
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const { open } = require("../event/dom");
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const { windows } = require("../window/utils");
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const { filter, merge, map, expand } = require("../event/utils");
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// Function registers single shot event listeners for relevant window events
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// that forward events to exported event stream.
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function eventsFor(window) {
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let interactive = open(window, "DOMContentLoaded", { capture: true });
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let complete = open(window, "load", { capture: true });
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let states = merge([interactive, complete]);
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let changes = filter(states, function({target}) target === window.document);
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return map(changes, function({type, target}) {
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return { type: type, target: target.defaultView }
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});
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}
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// In addition to observing windows that are open we also observe windows
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// that are already already opened in case they're in process of loading.
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let opened = windows(null, { includePrivate: true });
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let currentEvents = merge(opened.map(eventsFor));
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// Register system event listeners for top level window open / close.
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function rename({type, target, data}) {
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return { type: rename[type], target: target, data: data }
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}
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rename.domwindowopened = "open";
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rename.domwindowclosed = "close";
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let openEvents = map(observe("domwindowopened"), rename);
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let closeEvents = map(observe("domwindowclosed"), rename);
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let futureEvents = expand(openEvents, function({target}) eventsFor(target));
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let channel = merge([currentEvents, futureEvents,
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openEvents, closeEvents]);
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exports.events = channel;
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