The models vocabulary provides basic support for dataflow programming. A model is an observable value. Changing a model's value notifies other objects which depend on the model automatically, and models may depend on each other's values.
The class of models:
Creating models:
Adding and removing connections:
Generic word called on model connections when the model value changes:
When using models which are not associated with controls (or when unit testing controls), you must activate and deactivate models manually:
Implementing models
Arrow models
Product models
Range models
Delay models
The class of models:
model
Creating models:
<model> ( value -- model )
Adding and removing connections:
add-connection ( observer model -- )
remove-connection ( observer model -- )
Generic word called on model connections when the model value changes:
model-changed ( model observer -- )
When using models which are not associated with controls (or when unit testing controls), you must activate and deactivate models manually:
activate-model ( model -- )
deactivate-model ( model -- )
Implementing models Arrow models Product models Range models Delay models