mirror of
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293 lines
8.6 KiB
JavaScript
293 lines
8.6 KiB
JavaScript
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Bookmarks Sync.
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*
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* The Initial Developer of the Original Code is Mozilla.
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* Portions created by the Initial Developer are Copyright (C) 2008
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Anant Narayanan <anant@kix.in>
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* Philipp von Weitershausen <philipp@weitershausen.de>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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const EXPORTED_SYMBOLS = ['PrefsEngine'];
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const Cc = Components.classes;
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const Ci = Components.interfaces;
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const Cu = Components.utils;
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const WEAVE_SYNC_PREFS = "services.sync.prefs.sync.";
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Cu.import("resource://services-sync/engines.js");
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Cu.import("resource://services-sync/stores.js");
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Cu.import("resource://services-sync/trackers.js");
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Cu.import("resource://services-sync/type_records/prefs.js");
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Cu.import("resource://services-sync/util.js");
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Cu.import("resource://services-sync/ext/Preferences.js");
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const PREFS_GUID = Utils.encodeBase64url(Svc.AppInfo.ID);
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function PrefsEngine() {
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SyncEngine.call(this, "Prefs");
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}
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PrefsEngine.prototype = {
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__proto__: SyncEngine.prototype,
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_storeObj: PrefStore,
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_trackerObj: PrefTracker,
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_recordObj: PrefRec,
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version: 2,
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getChangedIDs: function getChangedIDs() {
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// No need for a proper timestamp (no conflict resolution needed).
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let changedIDs = {};
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if (this._tracker.modified)
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changedIDs[PREFS_GUID] = 0;
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return changedIDs;
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},
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_wipeClient: function _wipeClient() {
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SyncEngine.prototype._wipeClient.call(this);
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this.justWiped = true;
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},
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_reconcile: function _reconcile(item) {
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// Apply the incoming item if we don't care about the local data
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if (this.justWiped) {
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this.justWiped = false;
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return true;
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}
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return SyncEngine.prototype._reconcile.call(this, item);
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}
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};
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function PrefStore(name) {
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Store.call(this, name);
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Svc.Obs.add("profile-before-change", function() {
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this.__prefs = null;
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}, this);
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}
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PrefStore.prototype = {
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__proto__: Store.prototype,
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__prefs: null,
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get _prefs() {
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if (!this.__prefs)
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this.__prefs = new Preferences();
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return this.__prefs;
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},
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_getSyncPrefs: function _getSyncPrefs() {
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let syncPrefs = Cc["@mozilla.org/preferences-service;1"]
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.getService(Ci.nsIPrefService)
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.getBranch(WEAVE_SYNC_PREFS)
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.getChildList("", {});
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// Also sync preferences that determine which prefs get synced.
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return syncPrefs.concat(
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syncPrefs.map(function (pref) { return WEAVE_SYNC_PREFS + pref; }));
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},
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_isSynced: function _isSyncedPref(pref) {
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return (pref.indexOf(WEAVE_SYNC_PREFS) == 0)
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|| this._prefs.get(WEAVE_SYNC_PREFS + pref, false);
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},
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_getAllPrefs: function () {
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let values = {};
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for each (let pref in this._getSyncPrefs()) {
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if (this._isSynced(pref)) {
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// Missing prefs get the null value.
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values[pref] = this._prefs.get(pref, null);
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}
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}
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return values;
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},
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_setAllPrefs: function PrefStore__setAllPrefs(values) {
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// cache
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let ltmExists = true;
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let ltm = {};
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let enabledBefore = false;
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let enabledPref = "lightweightThemes.isThemeSelected";
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let prevTheme = "";
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try {
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Cu.import("resource://gre/modules/LightweightThemeManager.jsm", ltm);
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ltm = ltm.LightweightThemeManager;
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enabledBefore = this._prefs.get(enabledPref, false);
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prevTheme = ltm.currentTheme;
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} catch(ex) {
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ltmExists = false;
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} // LightweightThemeManager only exists in Firefox 3.6+
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for (let [pref, value] in Iterator(values)) {
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if (!this._isSynced(pref))
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continue;
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// Pref has gone missing, best we can do is reset it.
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if (value == null) {
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this._prefs.reset(pref);
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continue;
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}
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try {
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this._prefs.set(pref, value);
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} catch(ex) {
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this._log.trace("Failed to set pref: " + pref + ": " + ex);
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}
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}
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// Notify the lightweight theme manager of all the new values
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if (ltmExists) {
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let enabledNow = this._prefs.get(enabledPref, false);
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if (enabledBefore && !enabledNow)
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ltm.currentTheme = null;
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else if (enabledNow && ltm.usedThemes[0] != prevTheme) {
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ltm.currentTheme = null;
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ltm.currentTheme = ltm.usedThemes[0];
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}
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}
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},
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getAllIDs: function PrefStore_getAllIDs() {
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/* We store all prefs in just one WBO, with just one GUID */
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let allprefs = {};
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allprefs[PREFS_GUID] = true;
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return allprefs;
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},
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changeItemID: function PrefStore_changeItemID(oldID, newID) {
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this._log.trace("PrefStore GUID is constant!");
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},
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itemExists: function FormStore_itemExists(id) {
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return (id === PREFS_GUID);
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},
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createRecord: function createRecord(id, collection) {
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let record = new PrefRec(collection, id);
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if (id == PREFS_GUID) {
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record.value = this._getAllPrefs();
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} else {
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record.deleted = true;
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}
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return record;
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},
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create: function PrefStore_create(record) {
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this._log.trace("Ignoring create request");
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},
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remove: function PrefStore_remove(record) {
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this._log.trace("Ignoring remove request");
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},
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update: function PrefStore_update(record) {
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// Silently ignore pref updates that are for other apps.
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if (record.id != PREFS_GUID)
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return;
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this._log.trace("Received pref updates, applying...");
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this._setAllPrefs(record.value);
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},
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wipe: function PrefStore_wipe() {
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this._log.trace("Ignoring wipe request");
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}
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};
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function PrefTracker(name) {
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Tracker.call(this, name);
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Svc.Obs.add("profile-before-change", this);
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Svc.Obs.add("weave:engine:start-tracking", this);
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Svc.Obs.add("weave:engine:stop-tracking", this);
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}
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PrefTracker.prototype = {
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__proto__: Tracker.prototype,
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get modified() {
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return Svc.Prefs.get("engine.prefs.modified", false);
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},
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set modified(value) {
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Svc.Prefs.set("engine.prefs.modified", value);
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},
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loadChangedIDs: function loadChangedIDs() {
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// Don't read changed IDs from disk at start up.
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},
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clearChangedIDs: function clearChangedIDs() {
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this.modified = false;
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},
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__prefs: null,
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get _prefs() {
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if (!this.__prefs)
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this.__prefs = new Preferences();
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return this.__prefs;
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},
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_enabled: false,
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observe: function(aSubject, aTopic, aData) {
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switch (aTopic) {
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case "weave:engine:start-tracking":
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if (!this._enabled) {
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Cc["@mozilla.org/preferences-service;1"]
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.getService(Ci.nsIPrefBranch2).addObserver("", this, false);
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this._enabled = true;
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}
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break;
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case "weave:engine:stop-tracking":
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if (this._enabled)
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this._enabled = false;
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// Fall through to clean up.
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case "profile-before-change":
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this.__prefs = null;
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Cc["@mozilla.org/preferences-service;1"]
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.getService(Ci.nsIPrefBranch2).removeObserver("", this);
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break;
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case "nsPref:changed":
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// 100 points for a change that determines which prefs are synced,
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// 25 points per regular pref change.
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let up;
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if (aData.indexOf(WEAVE_SYNC_PREFS) == 0)
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up = 100;
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else if (this._prefs.get(WEAVE_SYNC_PREFS + aData, false))
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up = 25;
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if (up) {
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this.score += up;
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this.modified = true;
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this._log.trace("Preference " + aData + " changed");
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}
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break;
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}
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}
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};
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