1 // Copyright (c) 2009-2014 Kris Maglione <maglione.k@gmail.com>
3 // This work is licensed for reuse under an MIT license. Details are
4 // given in the LICENSE.txt file included with this file.
10 exports: ["ModuleBase"],
11 require: ["config", "overlay", "services", "util"]
14 var BASE = "resource://dactyl-content/";
20 * The base class for all modules.
22 var ModuleBase = Class("ModuleBase", {
24 * @property {[string]} A list of module prerequisites which
25 * must be initialized before this module is loaded.
29 toString: function () "[module " + this.constructor.className + "]"
34 var Modules = function Modules(window) {
38 * Constructs a new ModuleBase class and makes arrangements for its
39 * initialization. Arguments marked as optional must be either
40 * entirely elided, or they must have the exact type specified.
41 * Loading semantics are as follows:
43 * - A module is guaranteed not to be initialized before any of its
44 * prerequisites as listed in its {@see ModuleBase#requires} member.
45 * - A module is considered initialized once it's been instantiated,
46 * its {@see Class#init} method has been called, and its
47 * instance has been installed into the top-level {@see modules}
49 * - Once the module has been initialized, its module-dependent
50 * initialization functions will be called as described hereafter.
51 * @param {string} name The module's name as it will appear in the
52 * top-level {@see modules} object.
53 * @param {ModuleBase} base The base class for this module.
55 * @param {Object} prototype The prototype for instances of this
56 * object. The object itself is copied and not used as a prototype
58 * @param {Object} classProperties The class properties for the new
61 * @param {Object} moduleInit The module initialization functions
62 * for the new module. Each function is called as soon as the
63 * named module has been initialized. The constructors are
64 * guaranteed to be called in the same order that the dependent
65 * modules were initialized.
68 * @returns {function} The constructor for the resulting module.
70 function Module(name, ...args) {
72 var base = ModuleBase;
73 if (callable(args[0]))
76 let [prototype, classProperties, moduleInit] = args;
77 prototype._metaInit_ = function () {
78 delete module.prototype._metaInit_;
79 Class.replaceProperty(modules, module.className, this);
81 const module = Class(name, base, prototype, classProperties);
83 module.INIT = moduleInit || {};
84 module.modules = modules;
85 module.prototype.INIT = module.INIT;
86 module.requires = prototype.requires || [];
87 Module.list.push(module);
88 Module.constructors[name] = module;
92 Module.constructors = {};
94 function newContext(proto, normal, name) {
98 sandbox = Components.utils.Sandbox(window, { sandboxPrototype: proto || modules,
99 sandboxName: name || ("Dactyl Sandbox " + ++_id),
103 // sandbox.Object = jsmodules.Object;
104 sandbox.File = global.File;
105 sandbox.Math = global.Math;
106 sandbox.Set = global.Set;
111 const BASES = [BASE, "resource://dactyl-local-content/"];
114 if (config.haveGecko(29))
115 var proxy = new Proxy(window, {
116 get: function window_get(target, prop) {
117 // `in`, not `hasOwnProperty`, because we want to return
118 // unbound methods in `Object.prototype`
119 if (prop in proxyCache)
120 return proxyCache[prop];
122 let p = target[prop];
124 return proxyCache[prop] = p.bind(target);
129 set: function window_set(target, prop, val) {
130 return target[prop] = val;
136 // Oh, the brokenness... See bug 793210
137 Object.preventExtensions(o);
138 proxy = new Proxy(o, {
139 get: function window_get(target, prop) {
140 // `in`, not `hasOwnProperty`, because we want to return
141 // unbound methods in `Object.prototype`
142 if (prop in proxyCache)
143 return proxyCache[prop];
145 let p = window[prop];
147 return proxyCache[prop] = p.bind(window);
152 set: function window_set(target, prop, val) {
153 return window[prop] = val;
156 getOwnPropertyDescriptor: function (target, prop) Object.getOwnPropertyDescriptor(window, prop),
157 getOwnPropertyNames: function (target, prop) Object.getOwnPropertyNames(window),
158 defineProperty: function (target, prop, desc) Object.defineProperty(window, prop, desc),
159 deleteProperty: function (target, prop) { delete window[prop]; },
160 has: function (target, prop) prop in window,
161 hasOwn: function (target, prop) hasOwnProperty(window, prop),
162 enumerate: function (target) (p for (p in window)),
163 iterate: function (target) (p for (p of window))
167 var jsmodules = newContext(proxy, false, "Dactyl `jsmodules`");
168 jsmodules.NAME = "jsmodules";
170 const create = bind("create", jsmodules.Object);
172 const modules = update(create(jsmodules), {
173 yes_i_know_i_should_not_report_errors_in_these_branches_thanks: [],
175 jsmodules: jsmodules,
179 load: function load(script) {
180 for (let [i, base] in Iterator(BASES)) {
182 JSMLoader.loadSubScript(base + script + ".js", modules, "UTF-8");
186 if (typeof e !== "string") {
187 util.dump("Trying: " + (base + script + ".js") + ":");
193 require(script, jsmodules);
196 util.dump("Loading script " + script + ":");
201 newContext: newContext,
203 get ownPropertyValues() array.compact(
204 Object.getOwnPropertyNames(this)
205 .map(name => Object.getOwnPropertyDescriptor(this, name).value)),
207 get moduleList() this.ownPropertyValues.filter(mod => (mod instanceof this.ModuleBase || mod.isLocalModule))
210 modules.plugins = create(modules);
211 modules.modules = modules;
217 overlay.overlayWindow(Object.keys(config.overlays),
218 function _overlay(window) ({
219 ready: function onInit(document) {
220 const modules = Modules(window);
221 modules.moduleManager = this;
222 this.modules = modules;
223 this.jsmodules = modules.jsmodules;
225 window.dactyl = { modules: modules };
227 defineModule.time("load", null, function _load() {
228 config.modules.global
229 .forEach(function (name) {
231 defineModule.time("load", name, require, null, name, modules.jsmodules);
233 lazyRequire(name[0], name.slice(1), modules.jsmodules);
236 config.modules.window
237 .forEach(name => { defineModule.time("load", name, modules.load, modules, name); });
241 load: function onLoad(document) {
244 var { modules, Module } = this.modules;
245 delete window.dactyl;
247 this.startTime = Date.now();
248 this.deferredInit = { load: {} };
249 this.seen = RealSet();
250 this.loaded = RealSet();
251 modules.loaded = this.loaded;
253 this.modules = modules;
256 this.initDependencies("init");
258 modules.config.scripts.forEach(modules.load);
262 defineModule.modules.forEach(function defModule({ lazyInit, constructor: { className } }) {
264 Class.replaceProperty(modules, className, modules[className]);
265 this.initDependencies(className);
268 modules.__defineGetter__(className, function () {
269 let module = modules.jsmodules[className];
270 Class.replaceProperty(modules, className, module);
271 if (module.reallyInit)
272 module.reallyInit(); // :(
274 if (!module.lazyDepends)
275 self.initDependencies(className);
281 cleanup: function cleanup(window) {
282 overlay.windows.delete(window);
284 Cu.nukeSandbox(this.jsmodules);
287 unload: function unload(window) {
288 for (let mod of this.modules.moduleList.reverse()) {
291 if ("destroy" in mod)
292 util.trapErrors("destroy", mod);
296 visible: function visible(window) {
297 // Module.list.forEach(load);
298 this.initDependencies("load");
299 this.modules.times = update({}, defineModule.times);
301 defineModule.loadLog.push("Loaded in " + (Date.now() - this.startTime) + "ms");
303 overlay.windows.add(window);
306 loadModule: function loadModule(module, prereq, frame) {
307 let { loaded, seen } = this;
308 let { Module, modules } = this.modules;
310 if (isString(module)) {
311 if (!Module.constructors.hasOwnProperty(module))
312 modules.load(module);
313 module = Module.constructors[module];
317 if (loaded.has(module.className))
320 if (seen.add(module.className))
321 throw Error("Module dependency loop.");
323 for (let dep in values(module.requires))
324 this.loadModule(Module.constructors[dep], module.className);
326 defineModule.loadLog.push(
327 "Load" + (isString(prereq) ? " " + prereq + " dependency: " : ": ")
330 if (frame && frame.filename)
331 defineModule.loadLog.push(" from: " + util.fixURI(frame.filename) + ":" + frame.lineNumber);
333 let obj = defineModule.time(module.className, "init", module);
334 Class.replaceProperty(modules, module.className, obj);
336 loaded.add(module.className);
338 if (loaded.has("dactyl") && obj.signals)
339 modules.dactyl.registerObservers(obj);
341 if (!module.lazyDepends)
342 this.initDependencies(module.className);
345 util.dump("Loading " + (module && module.className) + ":");
348 return modules[module.className];
351 deferInit: function deferInit(name, INIT, mod) {
352 let { modules } = this.modules;
354 let init = this.deferredInit[name] || {};
355 this.deferredInit[name] = init;
357 let className = mod.className || mod.constructor.className;
359 if (!hasOwnProperty(init, className)) {
360 init[className] = function callee() {
362 this.currentDependency = className;
363 defineModule.time(className, name, INIT[name], mod,
364 modules.dactyl, modules, window);
366 if (!callee.frobbed) {
367 callee.frobbed = true;
368 if (modules[name] instanceof Class)
369 modules[name].withSavedValues(["currentDependency"], finish);
375 INIT[name].require = function (name) { init[name](); };
379 scanModules: function scanModules() {
380 let { Module, modules } = this.modules;
382 defineModule.modules.forEach((mod) => {
383 let names = RealSet(Object.keys(mod.INIT));
384 if ("init" in mod.INIT)
387 for (let name of names)
388 this.deferInit(name, mod.INIT, mod);
391 Module.list.forEach((mod) => {
393 modules.__defineGetter__(mod.className, () => {
394 delete modules[mod.className];
395 return this.loadModule(mod.className, null, Components.stack.caller);
397 Object.keys(mod.prototype.INIT)
398 .forEach((name) => { this.deferInit(name, mod.prototype.INIT, mod); });
404 initDependencies: function initDependencies(name, parents) {
405 for (let [k, v] in Iterator(this.deferredInit[name] || {}))
406 if (!parents || ~parents.indexOf(k))
413 } catch(e){ if (!e.stack) e = Error(e); dump(e.fileName+":"+e.lineNumber+": "+e+"\n" + e.stack); }
415 // vim: set fdm=marker sw=4 sts=4 ts=8 et ft=javascript: