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/* 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/. */
/* globals catcher, log */
"use strict";
this.communication = (function () {
const exports = {};
const registeredFunctions = {};
exports.onMessage = catcher.watchFunction((req, sender, sendResponse) => {
if (!(req.funcName in registeredFunctions)) {
log.error(`Received unknown internal message type ${req.funcName}`);
sendResponse({ type: "error", name: "Unknown message type" });
return;
}
if (!Array.isArray(req.args)) {
log.error("Received message with no .args list");
sendResponse({ type: "error", name: "No .args" });
return;
}
const func = registeredFunctions[req.funcName];
let result;
try {
req.args.unshift(sender);
result = func.apply(null, req.args);
} catch (e) {
log.error(`Error in ${req.funcName}:`, e, e.stack);
// FIXME: should consider using makeError from catcher here:
sendResponse({
type: "error",
message: e + "",
errorCode: e.errorCode,
popupMessage: e.popupMessage,
});
return;
}
if (result && result.then) {
result
.then(concreteResult => {
sendResponse({ type: "success", value: concreteResult });
})
.catch(errorResult => {
log.error(
`Promise error in ${req.funcName}:`,
errorResult,
errorResult && errorResult.stack
);
sendResponse({
type: "error",
message: errorResult + "",
errorCode: errorResult.errorCode,
popupMessage: errorResult.popupMessage,
});
});
return;
}
sendResponse({ type: "success", value: result });
});
exports.register = function (name, func) {
registeredFunctions[name] = func;
};
return exports;
})();
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