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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
const lazy = {};
ChromeUtils.defineESModuleGetters(lazy, {
BranchedAddonStudyAction:
PreferenceExperiments:
});
const NS_PREFBRANCH_PREFCHANGE_TOPIC_ID = "nsPref:changed"; // from modules/libpref/nsIPrefBranch.idl
const PREF_OPT_OUT_STUDIES_ENABLED = "app.shield.optoutstudies.enabled";
/**
* Handles Shield-specific preferences, including their UI.
*/
export var ShieldPreferences = {
init() {
// Watch for changes to the Opt-out pref
Services.prefs.addObserver(PREF_OPT_OUT_STUDIES_ENABLED, this);
lazy.CleanupManager.addCleanupHandler(() => {
Services.prefs.removeObserver(PREF_OPT_OUT_STUDIES_ENABLED, this);
});
},
observe(subject, topic, data) {
switch (topic) {
case NS_PREFBRANCH_PREFCHANGE_TOPIC_ID:
this.observePrefChange(data);
break;
}
},
async observePrefChange(prefName) {
let prefValue;
switch (prefName) {
// If the opt-out pref changes to be false, disable all current studies.
case PREF_OPT_OUT_STUDIES_ENABLED: {
prefValue = Services.prefs.getBoolPref(PREF_OPT_OUT_STUDIES_ENABLED);
if (!prefValue) {
const action = new lazy.BranchedAddonStudyAction();
const studyPromises = (await lazy.AddonStudies.getAll()).map(
study => {
if (!study.active) {
return null;
}
return action.unenroll(study.recipeId, "general-opt-out");
}
);
const experimentPromises = (
await lazy.PreferenceExperiments.getAll()
).map(experiment => {
if (experiment.expired) {
return null;
}
return lazy.PreferenceExperiments.stop(experiment.slug, {
reason: "general-opt-out",
caller: "observePrefChange::general-opt-out",
});
});
const allPromises = studyPromises
.concat(experimentPromises)
.map(p => p && p.catch(err => console.error(err)));
await Promise.all(allPromises);
}
break;
}
}
},
};