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-rw-r--r--addon-sdk/source/lib/sdk/content/content-worker.js305
1 files changed, 0 insertions, 305 deletions
diff --git a/addon-sdk/source/lib/sdk/content/content-worker.js b/addon-sdk/source/lib/sdk/content/content-worker.js
deleted file mode 100644
index 0a8225733..000000000
--- a/addon-sdk/source/lib/sdk/content/content-worker.js
+++ /dev/null
@@ -1,305 +0,0 @@
-/* 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/. */
-
-Object.freeze({
- // TODO: Bug 727854 Use same implementation than common JS modules,
- // i.e. EventEmitter module
-
- /**
- * Create an EventEmitter instance.
- */
- createEventEmitter: function createEventEmitter(emit) {
- let listeners = Object.create(null);
- let eventEmitter = Object.freeze({
- emit: emit,
- on: function on(name, callback) {
- if (typeof callback !== "function")
- return this;
- if (!(name in listeners))
- listeners[name] = [];
- listeners[name].push(callback);
- return this;
- },
- once: function once(name, callback) {
- eventEmitter.on(name, function onceCallback() {
- eventEmitter.removeListener(name, onceCallback);
- callback.apply(callback, arguments);
- });
- },
- removeListener: function removeListener(name, callback) {
- if (!(name in listeners))
- return;
- let index = listeners[name].indexOf(callback);
- if (index == -1)
- return;
- listeners[name].splice(index, 1);
- }
- });
- function onEvent(name) {
- if (!(name in listeners))
- return [];
- let args = Array.slice(arguments, 1);
- let results = [];
- for (let callback of listeners[name]) {
- results.push(callback.apply(null, args));
- }
- return results;
- }
- return {
- eventEmitter: eventEmitter,
- emit: onEvent
- };
- },
-
- /**
- * Create an EventEmitter instance to communicate with chrome module
- * by passing only strings between compartments.
- * This function expects `emitToChrome` function, that allows to send
- * events to the chrome module. It returns the EventEmitter as `pipe`
- * attribute, and, `onChromeEvent` a function that allows chrome module
- * to send event into the EventEmitter.
- *
- * pipe.emit --> emitToChrome
- * onChromeEvent --> callback registered through pipe.on
- */
- createPipe: function createPipe(emitToChrome) {
- let ContentWorker = this;
- function onEvent(type, ...args) {
- // JSON.stringify is buggy with cross-sandbox values,
- // it may return "{}" on functions. Use a replacer to match them correctly.
- let replacer = (k, v) =>
- typeof(v) === "function"
- ? (type === "console" ? Function.toString.call(v) : void(0))
- : v;
-
- let str = JSON.stringify([type, ...args], replacer);
- emitToChrome(str);
- }
-
- let { eventEmitter, emit } =
- ContentWorker.createEventEmitter(onEvent);
-
- return {
- pipe: eventEmitter,
- onChromeEvent: function onChromeEvent(array) {
- // We either receive a stringified array, or a real array.
- // We still allow to pass an array of objects, in WorkerSandbox.emitSync
- // in order to allow sending DOM node reference between content script
- // and modules (only used for context-menu API)
- let args = typeof array == "string" ? JSON.parse(array) : array;
- return emit.apply(null, args);
- }
- };
- },
-
- injectConsole: function injectConsole(exports, pipe) {
- exports.console = Object.freeze({
- log: pipe.emit.bind(null, "console", "log"),
- info: pipe.emit.bind(null, "console", "info"),
- warn: pipe.emit.bind(null, "console", "warn"),
- error: pipe.emit.bind(null, "console", "error"),
- debug: pipe.emit.bind(null, "console", "debug"),
- exception: pipe.emit.bind(null, "console", "exception"),
- trace: pipe.emit.bind(null, "console", "trace"),
- time: pipe.emit.bind(null, "console", "time"),
- timeEnd: pipe.emit.bind(null, "console", "timeEnd")
- });
- },
-
- injectTimers: function injectTimers(exports, chromeAPI, pipe, console) {
- // wrapped functions from `'timer'` module.
- // Wrapper adds `try catch` blocks to the callbacks in order to
- // emit `error` event if exception is thrown in
- // the Worker global scope.
- // @see http://www.w3.org/TR/workers/#workerutils
-
- // List of all living timeouts/intervals
- let _timers = Object.create(null);
-
- // Keep a reference to original timeout functions
- let {
- setTimeout: chromeSetTimeout,
- setInterval: chromeSetInterval,
- clearTimeout: chromeClearTimeout,
- clearInterval: chromeClearInterval
- } = chromeAPI.timers;
-
- function registerTimer(timer) {
- let registerMethod = null;
- if (timer.kind == "timeout")
- registerMethod = chromeSetTimeout;
- else if (timer.kind == "interval")
- registerMethod = chromeSetInterval;
- else
- throw new Error("Unknown timer kind: " + timer.kind);
-
- if (typeof timer.fun == 'string') {
- let code = timer.fun;
- timer.fun = () => chromeAPI.sandbox.evaluate(exports, code);
- } else if (typeof timer.fun != 'function') {
- throw new Error('Unsupported callback type' + typeof timer.fun);
- }
-
- let id = registerMethod(onFire, timer.delay);
- function onFire() {
- try {
- if (timer.kind == "timeout")
- delete _timers[id];
- timer.fun.apply(null, timer.args);
- } catch(e) {
- console.exception(e);
- let wrapper = {
- instanceOfError: instanceOf(e, Error),
- value: e,
- };
- if (wrapper.instanceOfError) {
- wrapper.value = {
- message: e.message,
- fileName: e.fileName,
- lineNumber: e.lineNumber,
- stack: e.stack,
- name: e.name,
- };
- }
- pipe.emit('error', wrapper);
- }
- }
- _timers[id] = timer;
- return id;
- }
-
- // copied from sdk/lang/type.js since modules are not available here
- function instanceOf(value, Type) {
- var isConstructorNameSame;
- var isConstructorSourceSame;
-
- // If `instanceof` returned `true` we know result right away.
- var isInstanceOf = value instanceof Type;
-
- // If `instanceof` returned `false` we do ducktype check since `Type` may be
- // from a different sandbox. If a constructor of the `value` or a constructor
- // of the value's prototype has same name and source we assume that it's an
- // instance of the Type.
- if (!isInstanceOf && value) {
- isConstructorNameSame = value.constructor.name === Type.name;
- isConstructorSourceSame = String(value.constructor) == String(Type);
- isInstanceOf = (isConstructorNameSame && isConstructorSourceSame) ||
- instanceOf(Object.getPrototypeOf(value), Type);
- }
- return isInstanceOf;
- }
-
- function unregisterTimer(id) {
- if (!(id in _timers))
- return;
- let { kind } = _timers[id];
- delete _timers[id];
- if (kind == "timeout")
- chromeClearTimeout(id);
- else if (kind == "interval")
- chromeClearInterval(id);
- else
- throw new Error("Unknown timer kind: " + kind);
- }
-
- function disableAllTimers() {
- Object.keys(_timers).forEach(unregisterTimer);
- }
-
- exports.setTimeout = function ContentScriptSetTimeout(callback, delay) {
- return registerTimer({
- kind: "timeout",
- fun: callback,
- delay: delay,
- args: Array.slice(arguments, 2)
- });
- };
- exports.clearTimeout = function ContentScriptClearTimeout(id) {
- unregisterTimer(id);
- };
-
- exports.setInterval = function ContentScriptSetInterval(callback, delay) {
- return registerTimer({
- kind: "interval",
- fun: callback,
- delay: delay,
- args: Array.slice(arguments, 2)
- });
- };
- exports.clearInterval = function ContentScriptClearInterval(id) {
- unregisterTimer(id);
- };
-
- // On page-hide, save a list of all existing timers before disabling them,
- // in order to be able to restore them on page-show.
- // These events are fired when the page goes in/out of bfcache.
- // https://developer.mozilla.org/En/Working_with_BFCache
- let frozenTimers = [];
- pipe.on("pageshow", function onPageShow() {
- frozenTimers.forEach(registerTimer);
- });
- pipe.on("pagehide", function onPageHide() {
- frozenTimers = [];
- for (let id in _timers)
- frozenTimers.push(_timers[id]);
- disableAllTimers();
- // Some other pagehide listeners may register some timers that won't be
- // frozen as this particular pagehide listener is called first.
- // So freeze these timers on next cycle.
- chromeSetTimeout(function () {
- for (let id in _timers)
- frozenTimers.push(_timers[id]);
- disableAllTimers();
- }, 0);
- });
-
- // Unregister all timers when the page is destroyed
- // (i.e. when it is removed from bfcache)
- pipe.on("detach", function clearTimeouts() {
- disableAllTimers();
- _timers = {};
- frozenTimers = [];
- });
- },
-
- injectMessageAPI: function injectMessageAPI(exports, pipe, console) {
-
- let ContentWorker = this;
- let { eventEmitter: port, emit : portEmit } =
- ContentWorker.createEventEmitter(pipe.emit.bind(null, "event"));
- pipe.on("event", portEmit);
-
- let self = {
- port: port,
- postMessage: pipe.emit.bind(null, "message"),
- on: pipe.on.bind(null),
- once: pipe.once.bind(null),
- removeListener: pipe.removeListener.bind(null),
- };
- Object.defineProperty(exports, "self", {
- value: self
- });
- },
-
- injectOptions: function (exports, options) {
- Object.defineProperty( exports.self, "options", { value: JSON.parse( options ) });
- },
-
- inject: function (exports, chromeAPI, emitToChrome, options) {
- let ContentWorker = this;
- let { pipe, onChromeEvent } =
- ContentWorker.createPipe(emitToChrome);
-
- ContentWorker.injectConsole(exports, pipe);
- ContentWorker.injectTimers(exports, chromeAPI, pipe, exports.console);
- ContentWorker.injectMessageAPI(exports, pipe, exports.console);
- if ( options !== undefined ) {
- ContentWorker.injectOptions(exports, options);
- }
-
- Object.freeze( exports.self );
-
- return onChromeEvent;
- }
-});
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-27 19:24:24 +0000