93 lines
2.7 KiB
JavaScript
93 lines
2.7 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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const { utils: Cu, classes: Cc, interfaces: Ci } = Components;
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const { Services } = Cu.import('resource://gre/modules/Services.jsm');
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const cpmm = Cc['@mozilla.org/childprocessmessagemanager;1'].
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getService(Ci.nsISyncMessageSender);
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this.EXPORTED_SYMBOLS = ["registerContentFrame"];
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// This may be an overriden version of the SDK so use the PATH as a key for the
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// initial messages before we have a loaderID.
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const PATH = __URI__.replace('framescript/content.jsm', '');
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const { Loader } = Cu.import(PATH + 'toolkit/loader.js', {});
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// one Loader instance per addon (per @loader/options to be precise)
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var addons = new Map();
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// Tell the parent that a new process is ready
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cpmm.sendAsyncMessage('sdk/remote/process/start', {
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modulePath: PATH
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});
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// Load a child process module loader with the given loader options
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cpmm.addMessageListener('sdk/remote/process/load', ({ data: { modulePath, loaderID, options, reason } }) => {
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if (modulePath != PATH)
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return;
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// During startup races can mean we get a second load message
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if (addons.has(loaderID))
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return;
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let loader = Loader.Loader(options);
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let addon = {
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loader,
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require: Loader.Require(loader, { id: 'LoaderHelper' }),
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}
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addons.set(loaderID, addon);
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cpmm.sendAsyncMessage('sdk/remote/process/attach', {
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loaderID,
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processID: Services.appinfo.processID,
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isRemote: Services.appinfo.processType != Ci.nsIXULRuntime.PROCESS_TYPE_DEFAULT
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});
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addon.child = addon.require('sdk/remote/child');
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for (let contentFrame of frames.values())
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addon.child.registerContentFrame(contentFrame);
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});
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// Unload a child process loader
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cpmm.addMessageListener('sdk/remote/process/unload', ({ data: { loaderID, reason } }) => {
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if (!addons.has(loaderID))
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return;
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let addon = addons.get(loaderID);
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Loader.unload(addon.loader, reason);
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// We want to drop the reference to the loader but never allow creating a new
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// loader with the same ID
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addons.set(loaderID, {});
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})
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var frames = new Set();
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this.registerContentFrame = contentFrame => {
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contentFrame.addEventListener("unload", () => {
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unregisterContentFrame(contentFrame);
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}, false);
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frames.add(contentFrame);
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for (let addon of addons.values()) {
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if ("child" in addon)
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addon.child.registerContentFrame(contentFrame);
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}
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};
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function unregisterContentFrame(contentFrame) {
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frames.delete(contentFrame);
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for (let addon of addons.values()) {
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if ("child" in addon)
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addon.child.unregisterContentFrame(contentFrame);
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}
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}
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