forked from mirrors/gecko-dev
69 lines
2 KiB
JavaScript
69 lines
2 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* globals catcher, log */
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"use strict";
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this.communication = (function () {
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const exports = {};
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const registeredFunctions = {};
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exports.onMessage = catcher.watchFunction((req, sender, sendResponse) => {
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if (!(req.funcName in registeredFunctions)) {
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log.error(`Received unknown internal message type ${req.funcName}`);
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sendResponse({ type: "error", name: "Unknown message type" });
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return;
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}
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if (!Array.isArray(req.args)) {
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log.error("Received message with no .args list");
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sendResponse({ type: "error", name: "No .args" });
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return;
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}
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const func = registeredFunctions[req.funcName];
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let result;
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try {
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req.args.unshift(sender);
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result = func.apply(null, req.args);
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} catch (e) {
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log.error(`Error in ${req.funcName}:`, e, e.stack);
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// FIXME: should consider using makeError from catcher here:
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sendResponse({
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type: "error",
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message: e + "",
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errorCode: e.errorCode,
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popupMessage: e.popupMessage,
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});
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return;
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}
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if (result && result.then) {
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result
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.then(concreteResult => {
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sendResponse({ type: "success", value: concreteResult });
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})
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.catch(errorResult => {
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log.error(
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`Promise error in ${req.funcName}:`,
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errorResult,
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errorResult && errorResult.stack
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);
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sendResponse({
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type: "error",
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message: errorResult + "",
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errorCode: errorResult.errorCode,
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popupMessage: errorResult.popupMessage,
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});
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});
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return;
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}
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sendResponse({ type: "success", value: result });
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});
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exports.register = function (name, func) {
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registeredFunctions[name] = func;
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};
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return exports;
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})();
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