wisemapping-frontend/packages/mindplot/lib/components/LocalStorageManager.js

/*
 *    Copyright [2015] [wisemapping]
 *
 *   Licensed under WiseMapping Public License, Version 1.0 (the "License").
 *   It is basically the Apache License, Version 2.0 (the "License") plus the
 *   "powered by wisemapping" text requirement on every single page;
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the license at
 *
 *       http://www.wisemapping.org/license
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */
const PersistenceManager = require('./PersistenceManager').default;

const LocalStorageManager = new Class({
        Extends: PersistenceManager,
        initialize: function (documentUrl, forceLoad) {
            this.parent();
            this.documentUrl = documentUrl;
            this.forceLoad = forceLoad;
        },

        saveMapXml: function (mapId, mapXml, pref, saveHistory, events) {
            localStorage.setItem(mapId + "-xml", mapXml);
        },

        discardChanges: function (mapId) {
            localStorage.removeItem(mapId + "-xml");
        },

        loadMapDom: function (mapId) {
            var xml = localStorage.getItem(mapId + "-xml");
            if (xml == null || this.forceLoad) {
                $.ajax({
                    url: this.documentUrl.replace("{id}", mapId),
                    headers: {"Content-Type": "text/plain", "Accept": "application/xml"},
                    type: 'get',
                    dataType: "text",
                    async: false,
                    success: function (response) {
                        xml = response;
                    }
                });
                // If I could not load it from a file, hard code one.
                if (xml == null) {
                    throw new Error("Map could not be loaded");
                }
            }

            return jQuery.parseXML(xml);
        },

        unlockMap: function (mindmap) {
            // Ignore, no implementation required ...
        }
    }
);

export default LocalStorageManager;