+
+var Model = Class.extend({
+ observers: {},
+
+ init: function() {},
+
+ signal: function(event, data) {
+ console.log('signal', this, event, data);
+ if (this.observers[event]) {
+ for (observer in this.observers[event]) {
+ observer.handle(event, data);
+ }
+ };
+ return this;
+ },
+
+ addObserver: function(observer, event) {
+ if (!this.observers[event]) {
+ this.observers[event] = [];
+ }
+ this.observers[event][observer] = observer;
+ return this;
+ },
+
+ removeObserver: function(observer, event) {
+ if (!event) {
+ for (e in this.observers) {
+ this.removeObserver(observer, e);
+ }
+ } else {
+ delete this.observers[event][observer];
+ }
+ return this;
+ }
+});
+
+
+var XMLModel = Model.extend({
+ parent: null,
+ data: null,
+ serverURL: null,
+
+ init: function(parent, serverURL) {
+ this.parent = parent;
+ this.serverURL = serverURL;
+ },
+
+ reload: function() {
+ $.ajax({
+ url: this.serverURL,
+ dataType: 'text',
+ success: this.reloadSucceeded.bind(this)
+ });
+ },
+
+ reloadSucceeded: function(data) {
+ this.data = data;
+ this.signal('reloaded');
+ },
+})
+
+var DocumentModel = Model.extend({