5008b4491f
Also adds concept of locally stored preferences. Change-Id: Ib074a682228d5360a932af696e18967e8e3473be
94 lines
2.6 KiB
JavaScript
94 lines
2.6 KiB
JavaScript
// Copyright (C) 2016 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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(function() {
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'use strict';
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// Date cutoff is one day:
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var DRAFT_MAX_AGE = 24*60*60*1000;
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// Clean up old entries no more frequently than one day.
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var CLEANUP_THROTTLE_INTERVAL = 24*60*60*1000;
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Polymer({
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is: 'gr-storage',
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properties: {
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_lastCleanup: Number,
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_storage: {
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type: Object,
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value: function() {
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return window.localStorage;
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},
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},
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},
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getDraftComment: function(location) {
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this._cleanupDrafts();
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return this._getObject(this._getDraftKey(location));
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},
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setDraftComment: function(location, message) {
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var key = this._getDraftKey(location);
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this._setObject(key, {message: message, updated: Date.now()});
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},
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eraseDraftComment: function(location) {
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var key = this._getDraftKey(location);
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this._storage.removeItem(key);
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},
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getPreferences: function() {
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return this._getObject('localPrefs');
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},
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savePreferences: function(localPrefs) {
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this._setObject('localPrefs', localPrefs || null);
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},
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_getDraftKey: function(location) {
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return ['draft', location.changeNum, location.patchNum, location.path,
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location.line].join(':');
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},
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_cleanupDrafts: function() {
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// Throttle cleanup to the throttle interval.
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if (this._lastCleanup &&
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Date.now() - this._lastCleanup < CLEANUP_THROTTLE_INTERVAL) {
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return;
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}
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this._lastCleanup = Date.now();
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var draft;
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for (var key in this._storage) {
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if (key.indexOf('draft:') === 0) {
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draft = this._getObject(key);
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if (Date.now() - draft.updated > DRAFT_MAX_AGE) {
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this._storage.removeItem(key);
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}
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}
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}
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},
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_getObject: function(key) {
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var serial = this._storage.getItem(key);
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if (!serial) { return null; }
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return JSON.parse(serial);
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},
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_setObject: function(key, obj) {
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this._storage.setItem(key, JSON.stringify(obj));
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},
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});
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})();
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