+
+var Editor = Editor || {};
+
+// Obiekt implementujÄ…cy wzorzec KVC/KVO
+Editor.Object = Class.extend({
+ _className: 'Editor.Object',
+ _observers: {},
+ _guid: null,
+
+ init: function() {
+ this._observers = {};
+ console.log('Created', this.guid());
+ },
+
+ description: function() {
+ return this._className + '(guid = ' + this.guid() + ')';
+ },
+
+ addObserver: function(observer, property, callback) {
+ console.log('Add observer', observer.description(), 'to', this.description(), '[', property, ']');
+ if (!this._observers[property]) {
+ this._observers[property] = {}
+ }
+ this._observers[property][observer.guid()] = callback;
+ return this;
+ },
+
+ removeObserver: function(observer, property) {
+ if (!property) {
+ for (var property in this._observers) {
+ this.removeObserver(observer, property)
+ }
+ } else {
+ console.log('Remove observer', observer.description(), 'from', this.description(), '[', property, ']');
+ delete this._observers[property][observer.guid()];
+ }
+ return this;
+ },
+
+ notifyObservers: function(property) {
+ var currentValue = this[property];
+ for (var guid in this._observers[property]) {
+ console.log(this._observers[property][guid]);
+ console.log('Notifying', guid, 'of', this.description(), '[', property, ']');
+ this._observers[property][guid](property, currentValue, this);
+ }
+ return this;
+ },
+
+ guid: function() {
+ if (!this._guid) {
+ this._guid = ('editor-' + Editor.Object._lastGuid++);
+ }
+ return this._guid;
+ },
+
+ get: function(property) {
+ return this[property];
+ },
+
+ set: function(property, value) {
+ if (this[property] != value) {
+ this[property] = value;
+ this.notifyObservers(property);
+ }
+ return this;
+ },
+
+ dispose: function() {
+ delete this._observers;
+ }