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// Copyright (c) 2011 by Kris Maglione <maglione.k@gmail.com>
//
// This work is licensed for reuse under an MIT license. Details are
// given in the LICENSE.txt file included with this file.
"use strict";
try {
let { classes: Cc, interfaces: Ci, results: Cr, utils: Cu } = Components;
var EXPORTED_SYMBOLS = ["JSMLoader"];
var BOOTSTRAP_CONTRACT = "@dactyl.googlecode.com/base/bootstrap";
var JSMLoader = BOOTSTRAP_CONTRACT in Components.classes &&
Components.classes[BOOTSTRAP_CONTRACT].getService().wrappedJSObject.loader;
if (JSMLoader && JSMLoader.bump === 6)
JSMLoader.global = this;
else
JSMLoader = {
bump: 6,
builtin: Cu.Sandbox(this),
canonical: {},
factories: [],
name: "dactyl",
global: this,
globals: JSMLoader ? JSMLoader.globals : {},
io: Cc["@mozilla.org/network/io-service;1"].getService(Ci.nsIIOService),
loader: Cc["@mozilla.org/moz/jssubscript-loader;1"].getService(Ci.mozIJSSubScriptLoader),
manager: Components.manager.QueryInterface(Ci.nsIComponentRegistrar),
modules: JSMLoader && JSMLoader.modules || {},
stale: JSMLoader ? JSMLoader.stale : {},
suffix: "",
times: {
all: 0,
add: function add(major, minor, delta) {
this.all += delta;
this[major] = (this[major] || 0) + delta;
if (minor) {
minor = ":" + minor;
this[minor] = (this[minor] || 0) + delta;
this[major + minor] = (this[major + minor] || 0) + delta;
}
},
clear: function clear() {
for (let key in this)
if (typeof this[key] !== "number")
delete this[key];
}
},
init: function init(suffix) {
this.initialized = true;
this.suffix = suffix || "";
let base = this.load("base.jsm", this.global);
this.global.EXPORTED_SYMBOLS = base.EXPORTED_SYMBOLS;
this.global.JSMLoader = this;
base.JSMLoader = this;
},
getTarget: function getTarget(url) {
if (url.indexOf(":") === -1)
url = "resource://dactyl" + this.suffix + "/" + url;
let chan = this.io.newChannel(url, null, null);
chan.cancel(Cr.NS_BINDING_ABORTED);
return chan.name;
},
load: function load(name, target) {
let url = name;
if (url.indexOf(":") === -1)
url = "resource://dactyl" + this.suffix + "/" + url;
let targetURL = this.getTarget(url);
let stale = this.stale[name] || this.stale[targetURL];
if (stale) {
delete this.stale[name];
delete this.stale[targetURL];
let loadURL = url.replace(RegExp("^(resource://dactyl)/"), "$1" + this.suffix + "/");
let global = this.globals[name];
if (stale === targetURL)
this.loadSubScript(loadURL, global.global || global);
}
try {
let now = Date.now();
this.modules[url] = true;
let global = Cu.import(url, target);
if (!(name in this.globals))
this.times.add("require", name, Date.now() - now);
return this.globals[name] = global;
}
catch (e) {
dump("Importing " + url + ": " + e + "\n" + (e.stack || Error().stack));
throw e;
}
},
loadSubScript: function loadSubScript(script) {
let now = Date.now();
this.loader.loadSubScript.apply(this.loader, arguments);
this.times.add("loadSubScript", script, Date.now() - now);
},
cleanup: function unregister() {
for each (let factory in this.factories.splice(0))
this.manager.unregisterFactory(factory.classID, factory);
},
purge: function purge() {
dump("dactyl: JSMLoader: purge\n");
this.bootstrap = null;
if (Cu.unload) {
Object.keys(this.modules).reverse().forEach(function (url) {
try {
Cu.unload(url);
}
catch (e) {
Cu.reportError(e);
}
});
}
else {
for (let [url, global] in Iterator(this.globals)) {
if (url === "bootstrap.jsm" || url === "resource://dactyl/bootstrap.jsm")
continue;
let target = this.getTarget(url);
this.stale[url] = target;
this.stale[target] = target;
for each (let prop in Object.getOwnPropertyNames(global))
try {
if (!(prop in this.builtin) &&
["JSMLoader", "Set", "set", "EXPORTED_SYMBOLS"].indexOf(prop) < 0 &&
!global.__lookupGetter__(prop))
global[prop] = undefined;
}
catch (e) {
dump("Deleting property " + prop + " on " + url + ":\n " + e + "\n");
Cu.reportError(e);
}
}
}
},
Factory: function Factory(clas) ({
__proto__: clas.prototype,
createInstance: function (outer, iid) {
try {
if (outer != null)
throw Cr.NS_ERROR_NO_AGGREGATION;
if (!clas.instance)
clas.instance = new clas();
return clas.instance.QueryInterface(iid);
}
catch (e) {
Cu.reportError(e);
throw e;
}
}
}),
registerFactory: function registerFactory(factory) {
this.manager.registerFactory(factory.classID,
String(factory.classID),
factory.contractID,
factory);
this.factories.push(factory);
}
};
}catch(e){ dump(e + "\n" + (e.stack || Error().stack)); Components.utils.reportError(e) }
// vim: set fdm=marker sw=4 sts=4 et ft=javascript:
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