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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/. */
this.EXPORTED_SYMBOLS = ['PrefsEngine', 'PrefRec'];
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cu = Components.utils;
const WEAVE_SYNC_PREFS = "services.sync.prefs.sync.";
Cu.import("resource://services-sync/engines.js");
Cu.import("resource://services-sync/record.js");
Cu.import("resource://services-sync/util.js");
Cu.import("resource://services-sync/constants.js");
Cu.import("resource://services-common/utils.js");
Cu.import("resource://gre/modules/LightweightThemeManager.jsm");
Cu.import("resource://gre/modules/Preferences.jsm");
const PREFS_GUID = CommonUtils.encodeBase64URL(Services.appinfo.ID);
this.PrefRec = function PrefRec(collection, id) {
CryptoWrapper.call(this, collection, id);
}
PrefRec.prototype = {
__proto__: CryptoWrapper.prototype,
_logName: "Sync.Record.Pref",
};
Utils.deferGetSet(PrefRec, "cleartext", ["value"]);
this.PrefsEngine = function PrefsEngine(service) {
SyncEngine.call(this, "Prefs", service);
}
PrefsEngine.prototype = {
__proto__: SyncEngine.prototype,
_storeObj: PrefStore,
_trackerObj: PrefTracker,
_recordObj: PrefRec,
version: 2,
getChangedIDs: function getChangedIDs() {
// No need for a proper timestamp (no conflict resolution needed).
let changedIDs = {};
if (this._tracker.modified)
changedIDs[PREFS_GUID] = 0;
return changedIDs;
},
_wipeClient: function _wipeClient() {
SyncEngine.prototype._wipeClient.call(this);
this.justWiped = true;
},
_reconcile: function _reconcile(item) {
// Apply the incoming item if we don't care about the local data
if (this.justWiped) {
this.justWiped = false;
return true;
}
return SyncEngine.prototype._reconcile.call(this, item);
}
};
function PrefStore(name, engine) {
Store.call(this, name, engine);
Svc.Obs.add("profile-before-change", function() {
this.__prefs = null;
}, this);
}
PrefStore.prototype = {
__proto__: Store.prototype,
__prefs: null,
get _prefs() {
if (!this.__prefs)
this.__prefs = new Preferences();
return this.__prefs;
},
_getSyncPrefs: function _getSyncPrefs() {
let syncPrefs = Cc["@mozilla.org/preferences-service;1"]
.getService(Ci.nsIPrefService)
.getBranch(WEAVE_SYNC_PREFS)
.getChildList("", {});
// Also sync preferences that determine which prefs get synced.
return syncPrefs.concat(
syncPrefs.map(function (pref) { return WEAVE_SYNC_PREFS + pref; }));
},
_isSynced: function _isSyncedPref(pref) {
return (pref.indexOf(WEAVE_SYNC_PREFS) == 0)
|| this._prefs.get(WEAVE_SYNC_PREFS + pref, false);
},
_getAllPrefs: function () {
let values = {};
for each (let pref in this._getSyncPrefs()) {
if (this._isSynced(pref)) {
// Missing prefs get the null value.
values[pref] = this._prefs.get(pref, null);
}
}
return values;
},
_setAllPrefs: function PrefStore__setAllPrefs(values) {
let enabledPref = "lightweightThemes.isThemeSelected";
let enabledBefore = this._prefs.get(enabledPref, false);
let prevTheme = LightweightThemeManager.currentTheme;
for (let [pref, value] in Iterator(values)) {
if (!this._isSynced(pref))
continue;
// Pref has gone missing, best we can do is reset it.
if (value == null) {
this._prefs.reset(pref);
continue;
}
try {
this._prefs.set(pref, value);
} catch(ex) {
this._log.trace("Failed to set pref: " + pref + ": " + ex);
}
}
// Notify the lightweight theme manager of all the new values
let enabledNow = this._prefs.get(enabledPref, false);
if (enabledBefore && !enabledNow) {
LightweightThemeManager.currentTheme = null;
} else if (enabledNow && LightweightThemeManager.usedThemes[0] != prevTheme) {
LightweightThemeManager.currentTheme = null;
LightweightThemeManager.currentTheme = LightweightThemeManager.usedThemes[0];
}
},
getAllIDs: function PrefStore_getAllIDs() {
/* We store all prefs in just one WBO, with just one GUID */
let allprefs = {};
allprefs[PREFS_GUID] = true;
return allprefs;
},
changeItemID: function PrefStore_changeItemID(oldID, newID) {
this._log.trace("PrefStore GUID is constant!");
},
itemExists: function FormStore_itemExists(id) {
return (id === PREFS_GUID);
},
createRecord: function createRecord(id, collection) {
let record = new PrefRec(collection, id);
if (id == PREFS_GUID) {
record.value = this._getAllPrefs();
} else {
record.deleted = true;
}
return record;
},
create: function PrefStore_create(record) {
this._log.trace("Ignoring create request");
},
remove: function PrefStore_remove(record) {
this._log.trace("Ignoring remove request");
},
update: function PrefStore_update(record) {
// Silently ignore pref updates that are for other apps.
if (record.id != PREFS_GUID)
return;
this._log.trace("Received pref updates, applying...");
this._setAllPrefs(record.value);
},
wipe: function PrefStore_wipe() {
this._log.trace("Ignoring wipe request");
}
};
function PrefTracker(name, engine) {
Tracker.call(this, name, engine);
Svc.Obs.add("profile-before-change", this);
Svc.Obs.add("weave:engine:start-tracking", this);
Svc.Obs.add("weave:engine:stop-tracking", this);
}
PrefTracker.prototype = {
__proto__: Tracker.prototype,
get modified() {
return Svc.Prefs.get("engine.prefs.modified", false);
},
set modified(value) {
Svc.Prefs.set("engine.prefs.modified", value);
},
loadChangedIDs: function loadChangedIDs() {
// Don't read changed IDs from disk at start up.
},
clearChangedIDs: function clearChangedIDs() {
this.modified = false;
},
__prefs: null,
get _prefs() {
if (!this.__prefs)
this.__prefs = new Preferences();
return this.__prefs;
},
_enabled: false,
observe: function(aSubject, aTopic, aData) {
switch (aTopic) {
case "weave:engine:start-tracking":
if (!this._enabled) {
Cc["@mozilla.org/preferences-service;1"]
.getService(Ci.nsIPrefBranch).addObserver("", this, false);
this._enabled = true;
}
break;
case "weave:engine:stop-tracking":
if (this._enabled)
this._enabled = false;
// Fall through to clean up.
case "profile-before-change":
this.__prefs = null;
Cc["@mozilla.org/preferences-service;1"]
.getService(Ci.nsIPrefBranch).removeObserver("", this);
break;
case "nsPref:changed":
// Trigger a sync for MULTI-DEVICE for a change that determines
// which prefs are synced or a regular pref change.
if (aData.indexOf(WEAVE_SYNC_PREFS) == 0 ||
this._prefs.get(WEAVE_SYNC_PREFS + aData, false)) {
this.score += SCORE_INCREMENT_XLARGE;
this.modified = true;
this._log.trace("Preference " + aData + " changed");
}
break;
}
}
};
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