Implement LocalStorage manager ...

mindplot/src/main/javascript/LocalStorageManager.js

@@ -0,0 +1,55 @@
+/*
+ *    Copyright [2011] [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.
+ */
+
+mindplot.LocalStorageManager = new Class({
+        Extends:mindplot.PersitenceManager,
+        initialize: function() {
+            this.parent();
+        },
+
+        saveMapXml : function(mapId, mapXml, pref, saveHistory, events) {
+            localStorage.setItem(mapId + "-xml", mapXml);
+            events.onSuccess();
+        },
+
+        loadMapDom : function(mapId) {
+            var xml = localStorage.getItem(mapId + "-xml");
+            if (xml == null) {
+                // Let's try to open one from the local directory ...
+                var xmlRequest = new Request({
+                    url: '../maps/' + mapId + '.xml',
+                    method: 'get',
+                    async: false,
+                    onSuccess: function(responseText) {
+                        xml = responseText;
+                    }
+                });
+                xmlRequest.send();
+
+                // If I could not load it from a file, hard code one.
+                if (xml == null) {
+                    xml = '<map name="6" version="pela"><topic central="true" text="General Status" id="1"/></map>';
+                }
+
+            }
+            return core.Utils.createDocumentFromText(xml);
+        }
+    }
+);
+
+