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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
const { Cc, Ci } = require("chrome");
const { createRemoteBrowser } = require("api-utils/window-utils");
const { channel } = require("./channel");
const packaging = require('@packaging');
const { when } = require('./unload');
const { MessageManager } = require('./message-manager');
const addonService = '@mozilla.org/addon/service;1' in Cc ?
Cc['@mozilla.org/addon/service;1'].getService(Ci.nsIAddonService) : null
const ENABLE_E10S = packaging.enable_e10s;
const isFennec = require("./xul-app").is("Fennec");
function loadScript(target, uri, sync) {
return 'loadScript' in target ? target.loadScript(uri, sync)
: target.loadFrameScript(uri, sync)
}
function process(target, id, path, scope) {
// Please note that even though `loadScript`, is executed before channel is
// returned, users still are able to subscribe for messages before any message
// will be sent. That's because `loadScript` queues script execution on the
// other process, which means they will execute async (on the next turn of
// event loop), while the channel for messages is returned immediately (in
// the same turn of event loop).
loadScript(target, packaging.uriPrefix + packaging.loader, false);
loadScript(target, 'data:,let loader = Loader.new(' +
JSON.stringify(packaging) + ');\n' +
'loader.main("' + id + '", "' + path + '");', false);
when(function (reason) {
// Please note that it's important to unload remote loader
// synchronously (using synchronous frame script), to make sure that we
// don't stop during unload.
// Bug 724433: Take care to nullify all globals set by `cuddlefish.js`
// otherwise, we will leak any still defined global.
// `dump` is set in Loader.new method, `dump = globals.dump;`
loadScript(target, 'data:,loader.unload("' + reason + '");' +
'loader = null; Loader = null; dump = null;', true);
});
return { channel: channel.bind(null, scope, target) }
}
exports.spawn = function spawn(id, path) {
return function promise(deliver) {
// If `nsIAddonService` is available we use it to create an add-on process,
// otherwise we fallback to the remote browser's message manager.
if (ENABLE_E10S && addonService) {
console.log('!!!!!!!!!!!!!!!!!!!! Using addon process !!!!!!!!!!!!!!!!!!');
deliver(process(addonService.createAddon(), id, path));
} else if (isFennec) {
deliver(process(new MessageManager(), id, path));
} else {
createRemoteBrowser(ENABLE_E10S)(function(browser) {
let messageManager = browser.QueryInterface(Ci.nsIFrameLoaderOwner).
frameLoader.messageManager
let window = browser.ownerDocument.defaultView;
deliver(process(messageManager, id, path, window));
});
}
};
};
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