Implements JS with almost identical API to the Lua support. Key differences from Lua: - The global mp, mp.msg and mp.utils are always available. - Instead of returning x, error, return x and expose mp.last_error(). - Timers are JS standard set/clear Timeout/Interval. - Supports CommonJS modules/require. - Added at mp.utils: getenv, read_file, write_file and few more. - Global print and dump (expand objects) functions. - mp.options currently not supported. See DOCS/man/javascript.rst for more details.
Showing the changes to player/javascript (1 of 8 files). Show all
Unified · Split
| @@ -0,0 +1,495 @@ | ||
| 1 | +"use strict"; | |
| 2 | +(function main_default_js(g) { | |
| 3 | +// - g is the global object. | |
| 4 | +// - User callbacks called without 'this', global only if callee is non-strict. | |
| 5 | +// - The names of function expressions are not required, but are used in stack | |
| 6 | +// traces. We name them where useful to show up (fname:#line always shows). | |
| 7 | + | |
| 8 | +mp.msg = { log: mp.log }; | |
| 9 | +mp.msg.verbose = mp.log.bind(null, "v"); | |
| 10 | +var levels = ["fatal", "error", "warn", "info", "debug"]; | |
| 11 | +levels.forEach(function(l) { mp.msg[l] = mp.log.bind(null, l) }); | |
| 12 | + | |
| 13 | +// same as {} but without inherited stuff, e.g. o["toString"] doesn't exist. | |
| 14 | +// used where we try to fetch items by keys which we don't absolutely trust. | |
| 15 | +function new_cache() { | |
| 16 | + return Object.create(null, {}); | |
| 17 | +} | |
| 18 | + | |
| 19 | +/********************************************************************** | |
| 20 | + * event handlers, property observers, client messages, hooks | |
| 21 | + *********************************************************************/ | |
| 22 | +var ehandlers = new_cache() // items of event-name: array of {maybe cb: fn} | |
| 23 | + | |
| 24 | +mp.register_event = function(name, fn) { | |
| 25 | + if (!ehandlers[name]) | |
| 26 | + ehandlers[name] = []; | |
| 27 | + ehandlers[name] = ehandlers[name].concat([{cb: fn}]); // replaces the arr | |
| 28 | + return mp._request_event(name, true); | |
| 29 | +} | |
| 30 | + | |
| 31 | +mp.unregister_event = function(fn) { | |
| 32 | + for (var name in ehandlers) { | |
| 33 | + ehandlers[name] = ehandlers[name].filter(function(h) { | |
| 34 | + if (h.cb != fn) | |
| 35 | + return true; | |
| 36 | + delete h.cb; // dispatch could have a ref to h | |
| 37 | + }); // replacing, not mutating the array | |
| 38 | + if (!ehandlers[name].length) { | |
| 39 | + delete ehandlers[name]; | |
| 40 | + mp._request_event(name, false); | |
| 41 | + } | |
| 42 | + } | |
| 43 | +} | |
| 44 | + | |
| 45 | +// call only pre-registered handlers, but not ones which got unregistered | |
| 46 | +function dispatch_event(e) { | |
| 47 | + var handlers = ehandlers[e.event]; | |
| 48 | + if (handlers) { | |
| 49 | + for (var len = handlers.length, i = 0; i < len; i++) { | |
| 50 | + var cb = handlers[i].cb; // 'handlers' won't mutate, but unregister | |
| 51 | + if (cb) // could remove cb from some items | |
| 52 | + cb(e); | |
| 53 | + } | |
| 54 | + } | |
| 55 | +} | |
| 56 | + | |
| 57 | +// ----- property observers ----- | |
| 58 | +var next_oid = 1, | |
| 59 | + observers = new_cache(); // items of id: fn | |
| 60 | + | |
| 61 | +mp.observe_property = function(name, format, fn) { | |
| 62 | + var id = next_oid++; | |
| 63 | + observers[id] = fn; | |
| 64 | + return mp._observe_property(id, name, format || undefined); // allow null | |
| 65 | +} | |
| 66 | + | |
| 67 | +mp.unobserve_property = function(fn) { | |
| 68 | + for (var id in observers) { | |
| 69 | + if (observers[id] == fn) { | |
| 70 | + delete observers[id]; | |
| 71 | + mp._unobserve_property(id); | |
| 72 | + } | |
| 73 | + } | |
| 74 | +} | |
| 75 | + | |
| 76 | +function notify_observer(e) { | |
| 77 | + var cb = observers[e.id]; | |
| 78 | + if (cb) | |
| 79 | + cb(e.name, e.data); | |
| 80 | +} | |
| 81 | + | |
| 82 | +// ----- Client messages ----- | |
| 83 | +var messages = new_cache(); // items of name: fn | |
| 84 | + | |
| 85 | +// overrides name. no libmpv API to reg/unreg specific messages. | |
| 86 | +mp.register_script_message = function(name, fn) { | |
| 87 | + messages[name] = fn; | |
| 88 | +} | |
| 89 | + | |
| 90 | +mp.unregister_script_message = function(name) { | |
| 91 | + delete messages[name]; | |
| 92 | +} | |
| 93 | + | |
| 94 | +function dispatch_message(ev) { | |
| 95 | + var cb = ev.args.length ? messages[ev.args[0]] : false; | |
| 96 | + if (cb) | |
| 97 | + cb.apply(null, ev.args.slice(1)); | |
| 98 | +} | |
| 99 | + | |
| 100 | +// ----- hooks ----- | |
| 101 | +var next_hid = 1, | |
| 102 | + hooks = new_cache(); // items of id: fn | |
| 103 | + | |
| 104 | +function hook_run(id, cont) { | |
| 105 | + var cb = hooks[id]; | |
| 106 | + if (cb) | |
| 107 | + cb(); | |
| 108 | + mp.commandv("hook-ack", cont); | |
| 109 | +} | |
| 110 | + | |
| 111 | +mp.add_hook = function add_hook(name, pri, fn) { | |
| 112 | + if (next_hid == 1) // doesn't really matter if we do it once or always | |
| 113 | + mp.register_script_message("hook_run", hook_run); | |
| 114 | + var id = next_hid++; | |
| 115 | + hooks[id] = fn; | |
| 116 | + return mp.commandv("hook-add", name, id, pri); | |
| 117 | +} | |
| 118 | + | |
| 119 | +/********************************************************************** | |
| 120 | + * key bindings | |
| 121 | + *********************************************************************/ | |
| 122 | +// binds: items of (binding) name which are objects of: | |
| 123 | +// {cb: fn, forced: bool, maybe input: str, repeatable: bool, complex: bool} | |
| 124 | +var binds = new_cache(); | |
| 125 | + | |
| 126 | +function dispatch_key_binding(name, state) { | |
| 127 | + var cb = binds[name] ? binds[name].cb : false; | |
| 128 | + if (cb) // "script-binding [<script_name>/]<name>" command was invoked | |
| 129 | + cb(state); | |
| 130 | +} | |
| 131 | + | |
| 132 | +function update_input_sections() { | |
| 133 | + var def = [], forced = []; | |
| 134 | + for (var n in binds) // Array.join() will later skip undefined .input | |
| 135 | + (binds[n].forced ? forced : def).push(binds[n].input); | |
| 136 | + | |
| 137 | + var sect = "input_" + mp.script_name; | |
| 138 | + mp.commandv("define-section", sect, def.join("\n"), "default"); | |
| 139 | + mp.commandv("enable-section", sect, "allow-hide-cursor+allow-vo-dragging"); | |
| 140 | + | |
| 141 | + sect = "input_forced_" + mp.script_name; | |
| 142 | + mp.commandv("define-section", sect, forced.join("\n"), "force"); | |
| 143 | + mp.commandv("enable-section", sect, "allow-hide-cursor+allow-vo-dragging"); | |
| 144 | +} | |
| 145 | + | |
| 146 | +// name/opts maybe omitted. opts: object with optional bool members: repeatable, | |
| 147 | +// complex, forced, or a string str which is evaluated as object {str: true}. | |
| 148 | +var next_bid = 1; | |
| 149 | +function add_binding(forced, key, name, fn, opts) { | |
| 150 | + if (typeof name == "function") { // as if "name" is not part of the args | |
| 151 | + opts = fn; | |
| 152 | + fn = name; | |
| 153 | + name = "__keybinding" + next_bid++; // new unique binding name | |
| 154 | + } | |
| 155 | + var key_data = {forced: forced}; | |
| 156 | + switch (typeof opts) { // merge opts into key_data | |
| 157 | + case "string": key_data[opts] = true; break; | |
| 158 | + case "object": for (var o in opts) key_data[o] = opts[o]; | |
| 159 | + } | |
| 160 | + | |
| 161 | + if (key_data.complex) { | |
| 162 | + mp.register_script_message(name, function msg_cb() { | |
| 163 | + fn({event: "press", is_mouse: false}); | |
| 164 | + }); | |
| 165 | + var KEY_STATES = { u: "up", d: "down", r: "repeat", p: "press" }; | |
| 166 | + key_data.cb = function key_cb(state) { | |
| 167 | + fn({ | |
| 168 | + event: KEY_STATES[state[0]] || "unknown", | |
| 169 | + is_mouse: state[1] == "m" | |
| 170 | + }); | |
| 171 | + } | |
| 172 | + } else { | |
| 173 | + mp.register_script_message(name, fn); | |
| 174 | + key_data.cb = function key_cb(state) { | |
| 175 | + // Emulate the semantics at input.c: mouse emits on up, kb on down. | |
| 176 | + // Also, key repeat triggers the binding again. | |
| 177 | + var e = state[0], | |
| 178 | + emit = (state[1] == "m") ? (e == "u") : (e == "d"); | |
| 179 | + if (emit || e == "p" || e == "r" && key_data.repeatable) | |
| 180 | + fn(); | |
| 181 | + } | |
| 182 | + } | |
| 183 | + | |
| 184 | + if (key) | |
| 185 | + key_data.input = key + " script-binding " + mp.script_name + "/" + name; | |
| 186 | + binds[name] = key_data; // used by user and/or our (key) script-binding | |
| 187 | + update_input_sections(); | |
| 188 | +} | |
| 189 | + | |
| 190 | +mp.add_key_binding = add_binding.bind(null, false); | |
| 191 | +mp.add_forced_key_binding = add_binding.bind(null, true); | |
| 192 | + | |
| 193 | +mp.remove_key_binding = function(name) { | |
| 194 | + mp.unregister_script_message(name); | |
| 195 | + delete binds[name]; | |
| 196 | + update_input_sections(); | |
| 197 | +} | |
| 198 | + | |
| 199 | +/********************************************************************** | |
| 200 | + Timers: compatible HTML5 WindowTimers - set/clear Timeout/Interval | |
| 201 | + - Spec: https://www.w3.org/TR/html5/webappapis.html#timers | |
| 202 | + - Guaranteed to callback a-sync to [re-]insertion (event-loop wise). | |
| 203 | + - Guaranteed to callback by expiration order, or, if equal, by insertion order. | |
| 204 | + - Not guaranteed schedule accuracy, though intervals should have good average. | |
| 205 | + *********************************************************************/ | |
| 206 | + | |
| 207 | +// pending 'timers' ordered by expiration: latest at index 0 (top fires first). | |
| 208 | +// Earlier timers are quicker to handle - just push/pop or fewer items to shift. | |
| 209 | +var next_tid = 1, | |
| 210 | + timers = [], // while in process_timers, just insertion-ordered (push) | |
| 211 | + tset_is_push = false, // signal set_timer that we're in process_timers | |
| 212 | + tcanceled = false, // or object of items timer-id: true | |
| 213 | + now = mp.get_time_ms; // just an alias | |
| 214 | + | |
| 215 | +function insert_sorted(arr, t) { | |
| 216 | + for (var i = arr.length - 1; i >= 0 && t.when >= arr[i].when; i--) | |
| 217 | + arr[i + 1] = arr[i]; // move up timers which fire earlier than t | |
| 218 | + arr[i + 1] = t; // i is -1 or fires later than t | |
| 219 | +} | |
| 220 | + | |
| 221 | +// args (is "arguments"): fn_or_str [,duration [,user_arg1 [, user_arg2 ...]]] | |
| 222 | +function set_timer(repeat, args) { | |
| 223 | + var fos = args[0], | |
| 224 | + duration = Math.max(0, (args[1] || 0)), // minimum and default are 0 | |
| 225 | + t = { | |
| 226 | + id: next_tid++, | |
| 227 | + when: now() + duration, | |
| 228 | + interval: repeat ? duration : -1, | |
| 229 | + callback: (typeof fos == "function") ? fos : Function(fos), | |
| 230 | + args: (args.length < 3) ? false : [].slice.call(args, 2), | |
| 231 | + }; | |
| 232 | + | |
| 233 | + if (tset_is_push) { | |
| 234 | + timers.push(t); | |
| 235 | + } else { | |
| 236 | + insert_sorted(timers, t); | |
| 237 | + } | |
| 238 | + return t.id; | |
| 239 | +} | |
| 240 | + | |
| 241 | +g.setTimeout = function setTimeout() { return set_timer(false, arguments) }; | |
| 242 | +g.setInterval = function setInterval() { return set_timer(true, arguments) }; | |
| 243 | + | |
| 244 | +g.clearTimeout = g.clearInterval = function(id) { | |
| 245 | + if (id < next_tid) { // must ignore if not active timer id. | |
| 246 | + if (!tcanceled) | |
| 247 | + tcanceled = {}; | |
| 248 | + tcanceled[id] = true; | |
| 249 | + } | |
| 250 | +} | |
| 251 | + | |
| 252 | +// arr: ordered timers array. ret: -1: no timers, 0: due, positive: ms to wait | |
| 253 | +function peek_wait(arr) { | |
| 254 | + return arr.length ? Math.max(0, arr[arr.length - 1].when - now()) : -1; | |
| 255 | +} | |
| 256 | + | |
| 257 | +// Callback all due non-canceled timers which were inserted before calling us. | |
| 258 | +// Returns wait in ms till the next timer (possibly 0), or -1 if nothing pends. | |
| 259 | +function process_timers() { | |
| 260 | + var wait = peek_wait(timers); | |
| 261 | + if (wait != 0) | |
| 262 | + return wait; | |
| 263 | + | |
| 264 | + var actives = timers; // only process those already inserted by now | |
| 265 | + timers = []; // we'll handle added new timers at the end of processing. | |
| 266 | + tset_is_push = true; // signal set_timer to just push-insert | |
| 267 | + | |
| 268 | + do { | |
| 269 | + var t = actives.pop(); | |
| 270 | + if (tcanceled && tcanceled[t.id]) | |
| 271 | + continue; | |
| 272 | + | |
| 273 | + if (t.args) { | |
| 274 | + t.callback.apply(null, t.args); | |
| 275 | + } else { | |
| 276 | + (0, t.callback)(); // faster, nicer stack trace than t.cb.call() | |
| 277 | + } | |
| 278 | + | |
| 279 | + if (t.interval >= 0) { | |
| 280 | + // allow 20 ms delay/clock-resolution/gc before we skip and reset | |
| 281 | + t.when = Math.max(now() - 20, t.when + t.interval); | |
| 282 | + timers.push(t); // insertion order only | |
| 283 | + } | |
| 284 | + } while (peek_wait(actives) == 0); | |
| 285 | + | |
| 286 | + // new 'timers' are insertion-ordered. remains of actives are fully ordered | |
| 287 | + timers.forEach(function(t) { insert_sorted(actives, t) }); | |
| 288 | + timers = actives; // now we're fully ordered again, and with all timers | |
| 289 | + tset_is_push = false; | |
| 290 | + if (tcanceled) { | |
| 291 | + timers = timers.filter(function(t) { return !tcanceled[t.id] }); | |
| 292 | + tcanceled = false; | |
| 293 | + } | |
| 294 | + return peek_wait(timers); | |
| 295 | +} | |
| 296 | + | |
| 297 | +/********************************************************************** | |
| 298 | + CommonJS module/require | |
| 299 | + | |
| 300 | + Spec: http://wiki.commonjs.org/wiki/Modules/1.1.1 | |
| 301 | + - All the mandatory requirements are implemented, all the unit tests pass. | |
| 302 | + - The implementation makes the following exception: | |
| 303 | + - Allows the chars [~@:\\] in module id for meta-dir/builtin/dos-drive/UNC. | |
| 304 | + | |
| 305 | + Implementation choices beyond the specification: | |
| 306 | + - A module may assign to module.exports (rather than only to exports). | |
| 307 | + - A module's 'this' is the global object, also if it sets strict mode. | |
| 308 | + - No 'global'/'self'. Users can do "this.global = this;" before require(..) | |
| 309 | + - A module has "privacy of its top scope", runs in its own function context. | |
| 310 | + - No id identity with symlinks - a valid choice which others make too. | |
| 311 | + - require("X") always maps to "X.js" -> require("foo.js") is file "foo.js.js". | |
| 312 | + - Global modules search paths are 'scripts/modules.js/' in mpv config dirs. | |
| 313 | + - A main script could e.g. require("./abc") to load a non-global module. | |
| 314 | + - Module id supports mpv path enhancements, e.g. ~/foo, ~~/bar, ~~desktop/baz | |
| 315 | + *********************************************************************/ | |
| 316 | + | |
| 317 | +// Internal meta top-dirs. Users should not rely on these names. | |
| 318 | +var MODULES_META = "~~modules", | |
| 319 | + SCRIPTDIR_META = "~~scriptdir", // relative script path -> meta absolute id | |
| 320 | + main_script = mp.utils.split_path(mp.script_file); // -> [ path, file ] | |
| 321 | + | |
| 322 | +function resolve_module_file(id) { | |
| 323 | + var sep = id.indexOf("/"), | |
| 324 | + base = id.substring(0, sep), | |
| 325 | + rest = id.substring(sep + 1) + ".js"; | |
| 326 | + | |
| 327 | + if (base == SCRIPTDIR_META) | |
| 328 | + return mp.utils.join_path(main_script[0], rest); | |
| 329 | + | |
| 330 | + if (base == MODULES_META) { | |
| 331 | + var path = mp.find_config_file("scripts/modules.js/" + rest); | |
| 332 | + if (!path) | |
| 333 | + throw(Error("Cannot find module file '" + rest + "'")); | |
| 334 | + return path; | |
| 335 | + } | |
| 336 | + | |
| 337 | + return id + ".js"; | |
| 338 | +} | |
| 339 | + | |
| 340 | +// Delimiter '/', remove redundancies, prefix with modules meta-root if needed. | |
| 341 | +// E.g. c:\x -> c:/x, or ./x//y/../z -> ./x/z, or utils/x -> ~~modules/utils/x . | |
| 342 | +function canonicalize(id) { | |
| 343 | + var path = id.replace(/\\/g,"/").split("/"), | |
| 344 | + t = path[0], | |
| 345 | + base = []; | |
| 346 | + | |
| 347 | + // if not strictly relative then must be top-level. figure out base/rest | |
| 348 | + if (t != "." && t != "..") { | |
| 349 | + // global module if it's not fs-root/home/dos-drive/builtin/meta-dir | |
| 350 | + if (!(t == "" || t == "~" || t[1] == ":" || t == "@" || t.match(/^~~/))) | |
| 351 | + path.unshift(MODULES_META); // add an explicit modules meta-root | |
| 352 | + | |
| 353 | + if (id.match(/^\\\\/)) // simple UNC handling, preserve leading \\srv | |
| 354 | + path = ["\\\\" + path[2]].concat(path.slice(3)); // [ \\srv, shr..] | |
| 355 | + | |
| 356 | + if (t[1] == ":" && t.length > 2) { // path: [ "c:relative", "path" ] | |
| 357 | + path[0] = t.substring(2); | |
| 358 | + path.unshift(t[0] + ":."); // -> [ "c:.", "relative", "path" ] | |
| 359 | + } | |
| 360 | + base = [path.shift()]; | |
| 361 | + } | |
| 362 | + | |
| 363 | + // path is now logically relative. base, if not empty, is its [meta] root. | |
| 364 | + // normalize the relative part - always id-based (spec Module Id, 1.3.6). | |
| 365 | + var cr = []; // canonicalized relative | |
| 366 | + for (var i = 0; i < path.length; i++) { | |
| 367 | + if (path[i] == "." || path[i] == "") | |
| 368 | + continue; | |
| 369 | + if (path[i] == ".." && cr.length && cr[cr.length - 1] != "..") { | |
| 370 | + cr.pop(); | |
| 371 | + continue; | |
| 372 | + } | |
| 373 | + cr.push(path[i]); | |
| 374 | + } | |
| 375 | + | |
| 376 | + if (!base.length && cr[0] != "..") | |
| 377 | + base = ["."]; // relative and not ../<stuff> so must start with ./ | |
| 378 | + return base.concat(cr).join("/"); | |
| 379 | +} | |
| 380 | + | |
| 381 | +function resolve_module_id(base_id, new_id) { | |
| 382 | + new_id = canonicalize(new_id); | |
| 383 | + if (!new_id.match(/^\.\/|^\.\.\//)) // doesn't start with ./ or ../ | |
| 384 | + return new_id; // not relative, we don't care about base_id | |
| 385 | + | |
| 386 | + var combined = mp.utils.join_path(mp.utils.split_path(base_id)[0], new_id); | |
| 387 | + return canonicalize(combined); | |
| 388 | +} | |
| 389 | + | |
| 390 | +var req_cache = new_cache(); // global for all instances of require | |
| 391 | + | |
| 392 | +// ret: a require function instance which uses base_id to resolve relative id's | |
| 393 | +function new_require(base_id) { | |
| 394 | + return function require(id) { | |
| 395 | + id = resolve_module_id(base_id, id); // id is now top-level | |
| 396 | + if (req_cache[id]) | |
| 397 | + return req_cache[id].exports; | |
| 398 | + | |
| 399 | + var new_module = {id: id, exports: {}}; | |
| 400 | + req_cache[id] = new_module; | |
| 401 | + try { | |
| 402 | + var filename = resolve_module_file(id); | |
| 403 | + // we need dedicated free vars + filename in traces + allow strict | |
| 404 | + var str = "mp._req = function(require, exports, module) {" + | |
| 405 | + mp.utils.read_file(filename) + | |
| 406 | + "\n;}"; | |
| 407 | + mp.utils.compile_js(filename, str)(); // only runs the assignment | |
| 408 | + var tmp = mp._req; // we have mp._req, or else we'd have thrown | |
| 409 | + delete mp._req; | |
| 410 | + tmp.call(g, new_require(id), new_module.exports, new_module); | |
| 411 | + } catch (e) { | |
| 412 | + delete req_cache[id]; | |
| 413 | + throw(e); | |
| 414 | + } | |
| 415 | + | |
| 416 | + return new_module.exports; | |
| 417 | + }; | |
| 418 | +} | |
| 419 | + | |
| 420 | +g.require = new_require(SCRIPTDIR_META + "/" + main_script[1]); | |
| 421 | + | |
| 422 | +/********************************************************************** | |
| 423 | + * various | |
| 424 | + *********************************************************************/ | |
| 425 | +g.print = mp.msg.info; // convenient alias | |
| 426 | +mp.get_script_name = function() { return mp.script_name }; | |
| 427 | +mp.get_script_file = function() { return mp.script_file }; | |
| 428 | +mp.get_time = function() { return mp.get_time_ms() / 1000 }; | |
| 429 | +mp.utils.getcwd = function() { return mp.get_property("working-directory") }; | |
| 430 | +mp.dispatch_event = dispatch_event; | |
| 431 | +mp.process_timers = process_timers; | |
| 432 | + | |
| 433 | +mp.get_opt = function(key, def) { | |
| 434 | + var v = mp.get_property_native("options/script-opts")[key]; | |
| 435 | + return (typeof v != "undefined") ? v : def; | |
| 436 | +} | |
| 437 | + | |
| 438 | +mp.osd_message = function osd_message(text, duration) { | |
| 439 | + mp.commandv("show_text", text, Math.round(1000 * (duration || -1))); | |
| 440 | +} | |
| 441 | + | |
| 442 | +// ----- dump: like print, but expands objects/arrays recursively ----- | |
| 443 | +function replacer(k, v) { | |
| 444 | + var t = typeof v; | |
| 445 | + if (t == "function" || t == "undefined") | |
| 446 | + return "<" + t + ">"; | |
| 447 | + if (Array.isArray(this) && t == "object" && v !== null) { // "safe" mode | |
| 448 | + if (this.indexOf(v) >= 0) | |
| 449 | + return "<VISITED>"; | |
| 450 | + this.push(v); | |
| 451 | + } | |
| 452 | + return v; | |
| 453 | +} | |
| 454 | + | |
| 455 | +function obj2str(v) { | |
| 456 | + try { // can process objects more than once, but throws on cycles | |
| 457 | + return JSON.stringify(v, replacer, 2); | |
| 458 | + } catch (e) { // simple safe: exclude visited objects, even if not cyclic | |
| 459 | + return JSON.stringify(v, replacer.bind([]), 2); | |
| 460 | + } | |
| 461 | +} | |
| 462 | + | |
| 463 | +g.dump = function dump() { | |
| 464 | + var toprint = []; | |
| 465 | + for (var i = 0; i < arguments.length; i++) { | |
| 466 | + var v = arguments[i]; | |
| 467 | + toprint.push((typeof v == "object") ? obj2str(v) : replacer(0, v)); | |
| 468 | + } | |
| 469 | + print.apply(null, toprint); | |
| 470 | +} | |
| 471 | + | |
| 472 | +/********************************************************************** | |
| 473 | + * main listeners and event loop | |
| 474 | + *********************************************************************/ | |
| 475 | +mp.keep_running = true; | |
| 476 | +g.exit = function() { mp.keep_running = false }; // user-facing too | |
| 477 | +mp.register_event("shutdown", g.exit); | |
| 478 | +mp.register_event("property-change", notify_observer); | |
| 479 | +mp.register_event("client-message", dispatch_message); | |
| 480 | +mp.register_script_message("key-binding", dispatch_key_binding); | |
| 481 | + | |
| 482 | +g.mp_event_loop = function mp_event_loop() { | |
| 483 | + var wait = 0; // seconds | |
| 484 | + do { // distapch events as long as they arrive, then do the timers | |
| 485 | + var e = mp.wait_event(wait); | |
| 486 | + if (e.event != "none") { | |
| 487 | + dispatch_event(e); | |
| 488 | + wait = 0; // poll the next one | |
| 489 | + } else { | |
| 490 | + wait = process_timers() / 1000; | |
| 491 | + } | |
| 492 | + } while (mp.keep_running); | |
| 493 | +}; | |
| 494 | + | |
| 495 | +})(this) | |