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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 = ['FormEngine', 'FormRec'];
var Cc = Components.classes;
var Ci = Components.interfaces;
var Cu = Components.utils;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://services-sync/engines.js");
Cu.import("resource://services-sync/record.js");
Cu.import("resource://services-common/async.js");
Cu.import("resource://services-sync/util.js");
Cu.import("resource://services-sync/constants.js");
Cu.import("resource://gre/modules/Log.jsm");
const FORMS_TTL = 5184000; // 60 days
this.FormRec = function FormRec(collection, id) {
CryptoWrapper.call(this, collection, id);
}
FormRec.prototype = {
__proto__: CryptoWrapper.prototype,
_logName: "Sync.Record.Form",
ttl: FORMS_TTL
};
Utils.deferGetSet(FormRec, "cleartext", ["name", "value"]);
var FormWrapper = {
_log: Log.repository.getLogger("Sync.Engine.Forms"),
_getEntryCols: ["fieldname", "value"],
_guidCols: ["guid"],
// Do a "sync" search by spinning the event loop until it completes.
_searchSpinningly: function(terms, searchData) {
let results = [];
let cb = Async.makeSpinningCallback();
let callbacks = {
handleResult: function(result) {
results.push(result);
},
handleCompletion: function(reason) {
cb(null, results);
}
};
Svc.FormHistory.search(terms, searchData, callbacks);
return cb.wait();
},
_updateSpinningly: function(changes) {
if (!Svc.FormHistory.enabled) {
return; // update isn't going to do anything.
}
let cb = Async.makeSpinningCallback();
let callbacks = {
handleCompletion: function(reason) {
cb();
}
};
Svc.FormHistory.update(changes, callbacks);
return cb.wait();
},
getEntry: function (guid) {
let results = this._searchSpinningly(this._getEntryCols, {guid: guid});
if (!results.length) {
return null;
}
return {name: results[0].fieldname, value: results[0].value};
},
getGUID: function (name, value) {
// Query for the provided entry.
let query = { fieldname: name, value: value };
let results = this._searchSpinningly(this._guidCols, query);
return results.length ? results[0].guid : null;
},
hasGUID: function (guid) {
// We could probably use a count function here, but searchSpinningly exists...
return this._searchSpinningly(this._guidCols, {guid: guid}).length != 0;
},
replaceGUID: function (oldGUID, newGUID) {
let changes = {
op: "update",
guid: oldGUID,
newGuid: newGUID,
}
this._updateSpinningly(changes);
}
};
this.FormEngine = function FormEngine(service) {
SyncEngine.call(this, "Forms", service);
}
FormEngine.prototype = {
__proto__: SyncEngine.prototype,
_storeObj: FormStore,
_trackerObj: FormTracker,
_recordObj: FormRec,
applyIncomingBatchSize: FORMS_STORE_BATCH_SIZE,
syncPriority: 6,
get prefName() "history",
_findDupe: function _findDupe(item) {
return FormWrapper.getGUID(item.name, item.value);
}
};
function FormStore(name, engine) {
Store.call(this, name, engine);
}
FormStore.prototype = {
__proto__: Store.prototype,
_processChange: function (change) {
// If this._changes is defined, then we are applying a batch, so we
// can defer it.
if (this._changes) {
this._changes.push(change);
return;
}
// Otherwise we must handle the change synchronously, right now.
FormWrapper._updateSpinningly(change);
},
applyIncomingBatch: function (records) {
// We collect all the changes to be made then apply them all at once.
this._changes = [];
let failures = Store.prototype.applyIncomingBatch.call(this, records);
if (this._changes.length) {
FormWrapper._updateSpinningly(this._changes);
}
delete this._changes;
return failures;
},
getAllIDs: function () {
let results = FormWrapper._searchSpinningly(["guid"], [])
let guids = {};
for (let result of results) {
guids[result.guid] = true;
}
return guids;
},
changeItemID: function (oldID, newID) {
FormWrapper.replaceGUID(oldID, newID);
},
itemExists: function (id) {
return FormWrapper.hasGUID(id);
},
createRecord: function (id, collection) {
let record = new FormRec(collection, id);
let entry = FormWrapper.getEntry(id);
if (entry != null) {
record.name = entry.name;
record.value = entry.value;
} else {
record.deleted = true;
}
return record;
},
create: function (record) {
this._log.trace("Adding form record for " + record.name);
let change = {
op: "add",
fieldname: record.name,
value: record.value
};
this._processChange(change);
},
remove: function (record) {
this._log.trace("Removing form record: " + record.id);
let change = {
op: "remove",
guid: record.id
};
this._processChange(change);
},
update: function (record) {
this._log.trace("Ignoring form record update request!");
},
wipe: function () {
let change = {
op: "remove"
};
FormWrapper._updateSpinningly(change);
}
};
function FormTracker(name, engine) {
Tracker.call(this, name, engine);
}
FormTracker.prototype = {
__proto__: Tracker.prototype,
QueryInterface: XPCOMUtils.generateQI([
Ci.nsIObserver,
Ci.nsISupportsWeakReference]),
startTracking: function() {
Svc.Obs.add("satchel-storage-changed", this);
},
stopTracking: function() {
Svc.Obs.remove("satchel-storage-changed", this);
},
observe: function (subject, topic, data) {
Tracker.prototype.observe.call(this, subject, topic, data);
switch (topic) {
case "satchel-storage-changed":
if (data == "formhistory-add" || data == "formhistory-remove") {
let guid = subject.QueryInterface(Ci.nsISupportsString).toString();
this.trackEntry(guid);
}
break;
}
},
trackEntry: function (guid) {
this.addChangedID(guid);
this.score += SCORE_INCREMENT_MEDIUM;
},
};
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