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/* vim:set ts=2 sw=2 sts=2 expandtab */
/* 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/. */
// @see http://mxr.mozilla.org/mozilla-central/source/js/src/xpconnect/loader/mozJSComponentLoader.cpp
"use strict";
const { classes: Cc, Constructor: CC, interfaces: Ci, utils: Cu,
results: Cr, manager: Cm } = Components;
const ioService = Cc['@mozilla.org/network/io-service;1'].
getService(Ci.nsIIOService);
const resourceHandler = ioService.getProtocolHandler('resource')
.QueryInterface(Ci.nsIResProtocolHandler);
const XMLHttpRequest = CC('@mozilla.org/xmlextras/xmlhttprequest;1',
'nsIXMLHttpRequest');
const prefs = Cc["@mozilla.org/preferences-service;1"].
getService(Ci.nsIPrefService).
QueryInterface(Ci.nsIPrefBranch2);
const mozIJSSubScriptLoader = Cc["@mozilla.org/moz/jssubscript-loader;1"].
getService(Ci.mozIJSSubScriptLoader);
const REASON = [ 'unknown', 'startup', 'shutdown', 'enable', 'disable',
'install', 'uninstall', 'upgrade', 'downgrade' ];
let loader = null;
let loaderUri = null;
const URI = __SCRIPT_URI_SPEC__.replace(/bootstrap\.js$/, "");
// Initializes default preferences
function setDefaultPrefs() {
let branch = prefs.getDefaultBranch("");
let prefLoaderScope = {
pref: function(key, val) {
switch (typeof val) {
case "boolean":
branch.setBoolPref(key, val);
break;
case "number":
if (val % 1 == 0) // number must be a integer, otherwise ignore it
branch.setIntPref(key, val);
break;
case "string":
branch.setCharPref(key, val);
break;
}
}
};
let uri = ioService.newURI(
"defaults/preferences/prefs.js",
null,
ioService.newURI(URI, null, null));
// if there is a prefs.js file, then import the default prefs
try {
// setup default prefs
mozIJSSubScriptLoader.loadSubScript(uri.spec, prefLoaderScope);
}
// errors here should not kill addon
catch (e) {
Cu.reportError(e);
}
}
// Gets the topic that fit best as application startup event, in according with
// the current application (e.g. Firefox, Fennec, Thunderbird...)
function getAppStartupTopic() {
// The following mapping of application names to GUIDs was taken
// from `xul-app` module. They should keep in sync, so if you change one,
// change the other too!
let ids = {
Firefox: '{ec8030f7-c20a-464f-9b0e-13a3a9e97384}',
Mozilla: '{86c18b42-e466-45a9-ae7a-9b95ba6f5640}',
Sunbird: '{718e30fb-e89b-41dd-9da7-e25a45638b28}',
SeaMonkey: '{92650c4d-4b8e-4d2a-b7eb-24ecf4f6b63a}',
Fennec: '{aa3c5121-dab2-40e2-81ca-7ea25febc110}',
Thunderbird: '{3550f703-e582-4d05-9a08-453d09bdfdc6}'
};
let id = Cc['@mozilla.org/xre/app-info;1'].getService(Ci.nsIXULAppInfo).ID;
switch (id) {
case ids.Firefox:
case ids.SeaMonkey:
return 'sessionstore-windows-restored';
case ids.Thunderbird:
return 'mail-startup-done';
// Temporary, until Fennec Birch will support sessionstore event
case ids.Fennec:
default:
return 'final-ui-startup';
}
}
// Utility function that synchronously reads local resource from the given
// `uri` and returns content string.
function readURI(uri) {
let ioservice = Cc["@mozilla.org/network/io-service;1"].getService(Ci.nsIIOService);
let channel = ioservice.newChannel(uri, "UTF-8", null);
let stream = channel.open();
let cstream = Cc["@mozilla.org/intl/converter-input-stream;1"].createInstance(Ci.nsIConverterInputStream);
cstream.init(stream, "UTF-8", 0, 0);
let str = {};
let data = "";
let read = 0;
do {
read = cstream.readString(0xffffffff, str);
data += str.value;
} while (read != 0);
cstream.close();
return data;
}
// Function takes `topic` to be observer via `nsIObserverService` and returns
// promise that will be delivered once notification is published.
function on(topic) {
return function promise(deliver) {
const observerService = Cc['@mozilla.org/observer-service;1'].
getService(Ci.nsIObserverService);
observerService.addObserver({
observe: function observer(subject, topic, data) {
observerService.removeObserver(this, topic);
deliver(subject, topic, data);
}
}, topic, false);
}
}
// We don't do anything on install & uninstall yet, but in a future
// we should allow add-ons to cleanup after uninstall.
function install(data, reason) {}
function uninstall(data, reason) {}
function startup(data, reason) {
// TODO: When bug 564675 is implemented this will no longer be needed
// Always set the default prefs, because they disappear on restart
setDefaultPrefs();
// TODO: Maybe we should perform read harness-options.json asynchronously,
// since we can't do anything until 'sessionstore-windows-restored' anyway.
let options = JSON.parse(readURI(URI + './harness-options.json'));
options.loadReason = REASON[reason];
// URI for the root of the XPI file.
// 'jar:' URI if the addon is packed, 'file:' URI otherwise.
// (Used by l10n module in order to fetch `locale` folder)
options.rootURI = data.resourceURI.spec;
// Register a new resource "domain" for this addon which is mapping to
// XPI's `resources` folder.
// Generate the domain name by using jetpack ID, which is the extension ID
// by stripping common characters that doesn't work as a domain name:
let uuidRe =
/^\{([0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12})\}$/;
let domain = options.jetpackID.toLowerCase()
.replace(/@/g, "-at-")
.replace(/\./g, "-dot-")
.replace(uuidRe, "$1");
let resourcesUri = ioService.newURI(URI + '/resources/', null, null);
resourceHandler.setSubstitution(domain, resourcesUri);
options.uriPrefix = "resource://" + domain + "/";
// Import loader module using `Cu.imports` and bootstrap module loader.
loaderUri = options.uriPrefix + options.loader;
loader = Cu.import(loaderUri).Loader.new(options);
// Creating a promise, that will be delivered once application is ready.
// If application is at startup then promise is delivered on
// the application startup topic, otherwise it's delivered immediately.
let promise = reason === APP_STARTUP ? on(getAppStartupTopic()) :
function promise(deliver) deliver()
// Once application is ready we spawn a new process with main module of
// on add-on.
promise(function() {
try {
loader.spawn(options.main, options.mainPath);
} catch (error) {
// If at this stage we have an error only thing we can do is report about
// it via error console. Keep in mind that error won't automatically show
// up there when called via observerService.
Cu.reportError(error);
throw error;
}
});
};
function shutdown(data, reason) {
// If loader is already present unload it, since add-on is disabled.
if (loader) {
reason = REASON[reason];
let system = loader.require('api-utils/system');
loader.unload(reason);
// Bug 724433: We need to unload JSM otherwise it will stay alive
// and keep a reference to this compartment.
Cu.unload(loaderUri);
loader = null;
// If add-on is lunched via `cfx run` we need to use `system.exit` to let
// cfx know we're done (`cfx test` will take care of exit so we don't do
// anything here).
if (system.env.CFX_COMMAND === 'run' && reason === 'shutdown')
system.exit(0);
}
};
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