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