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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/. */
"use strict";
const NETWORK_LOCATIONS_PREF = "devtools.aboutdebugging.network-locations";
/**
* This module provides a collection of helper methods to read and update network
* locations monitored by about-debugging.
*/
function addNetworkLocationsObserver(listener) {
Services.prefs.addObserver(NETWORK_LOCATIONS_PREF, listener);
}
exports.addNetworkLocationsObserver = addNetworkLocationsObserver;
function removeNetworkLocationsObserver(listener) {
Services.prefs.removeObserver(NETWORK_LOCATIONS_PREF, listener);
}
exports.removeNetworkLocationsObserver = removeNetworkLocationsObserver;
/**
* Read the current preference value for aboutdebugging network locations.
* Will throw if the value cannot be parsed or is not an array.
*/
function _parsePreferenceAsArray() {
const pref = Services.prefs.getStringPref(NETWORK_LOCATIONS_PREF, "[]");
const parsedValue = JSON.parse(pref);
if (!Array.isArray(parsedValue)) {
throw new Error("Expected array value in " + NETWORK_LOCATIONS_PREF);
}
return parsedValue;
}
function getNetworkLocations() {
try {
return _parsePreferenceAsArray();
} catch (e) {
Services.prefs.clearUserPref(NETWORK_LOCATIONS_PREF);
return [];
}
}
exports.getNetworkLocations = getNetworkLocations;
function addNetworkLocation(location) {
const locations = getNetworkLocations();
const locationsSet = new Set(locations);
locationsSet.add(location);
Services.prefs.setStringPref(
NETWORK_LOCATIONS_PREF,
JSON.stringify([...locationsSet])
);
}
exports.addNetworkLocation = addNetworkLocation;
function removeNetworkLocation(location) {
const locations = getNetworkLocations();
const locationsSet = new Set(locations);
locationsSet.delete(location);
Services.prefs.setStringPref(
NETWORK_LOCATIONS_PREF,
JSON.stringify([...locationsSet])
);
}
exports.removeNetworkLocation = removeNetworkLocation;
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