Observable class provides the notification functionality whenever data is modified. It also provides abstracted methods for graphically displaying the flow of data between observer and subject.
Gets or sets the data and invokes ObserverK.Notify when data is set.
Gets the color to use when drawing the link between subject and observer.
Gets or set whether the subject has been updated.
Implement a method that updates the object.
Creates a new instance of the Observable object.
Forces child classes to implement a method that draws all links between subject and observer.