abstract class Observable

Represents an object with observable properties. This is used by data in model-view architectures to notify interested parties of changes to the object's properties (fields or getter/setter pairs).

The interface does not require any specific technique to implement observability. You can implement it in the following ways:

• extend or mixin this class, and let the application call dirtyCheck periodically to check for changes to your object.

• extend or mixin ChangeNotifier, and implement change notifications manually by calling notifyPropertyChange from your setters.

• implement this interface and provide your own implementation.