зеркало из https://github.com/mozilla/gecko-dev.git
70 строки
2.5 KiB
JavaScript
70 строки
2.5 KiB
JavaScript
/* 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/. */
|
|
|
|
"use strict";
|
|
|
|
/**
|
|
* This module controls various global flags that can be toggled on and off.
|
|
* These flags are generally used to change the behavior of the code during
|
|
* testing. They are tracked by preferences so that they are propagated
|
|
* between the parent and content processes. The flags are exposed via a module
|
|
* as a conveniene and to stop from littering preference names throughout the
|
|
* code ase.
|
|
*
|
|
* Each of the flags is documented where it is defined.
|
|
*/
|
|
|
|
/**
|
|
* We cannot make a normal property writeable on `exports` because
|
|
* the module system freezes it. This function observes a preference
|
|
* and provides the latest value through a getter.
|
|
*/
|
|
function makePrefTrackedFlag(exports, name, pref) {
|
|
let flag;
|
|
// We don't have access to pref in worker, so disable all logs by default
|
|
if (isWorker) {
|
|
flag = false;
|
|
} else {
|
|
flag = Services.prefs.getBoolPref(pref, false);
|
|
const prefObserver = () => {
|
|
flag = Services.prefs.getBoolPref(pref, false);
|
|
};
|
|
Services.prefs.addObserver(pref, prefObserver);
|
|
|
|
// Also listen for Loader unload to unregister the pref observer and prevent leaking
|
|
const unloadObserver = function(subject) {
|
|
if (subject.wrappedJSObject == require("@loader/unload")) {
|
|
Services.prefs.removeObserver(pref, prefObserver);
|
|
Services.obs.removeObserver(unloadObserver, "devtools:loader:destroy");
|
|
}
|
|
};
|
|
Services.obs.addObserver(unloadObserver, "devtools:loader:destroy");
|
|
}
|
|
Object.defineProperty(exports, name, {
|
|
get() {
|
|
return flag;
|
|
},
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Setting the "devtools.debugger.log" preference to true will enable logging of
|
|
* the RDP calls to the devtools server.
|
|
*/
|
|
makePrefTrackedFlag(exports, "wantLogging", "devtools.debugger.log");
|
|
|
|
/**
|
|
* Setting the "devtools.debugger.log.verbose" preference to true will enable a
|
|
* more verbose logging of the the RDP. The "devtools.debugger.log" preference
|
|
* must be set to true as well for this to have any effect.
|
|
*/
|
|
makePrefTrackedFlag(exports, "wantVerbose", "devtools.debugger.log.verbose");
|
|
|
|
/**
|
|
* Setting the "devtools.testing" preference to true will toggle on certain
|
|
* behaviors that can differ from the production version of the code. These
|
|
* behaviors typically enable easier testing or enhanced debugging features.
|
|
*/
|
|
makePrefTrackedFlag(exports, "testing", "devtools.testing");
|