envisage.extension_point module

A trait type used to declare and access extension points.

class envisage.extension_point.ExtensionPoint(trait_type=<class 'traits.trait_types.List'>, id=None, **metadata)

Bases: TraitType

A trait type used to declare and access extension points.

Note that this is a trait type and hence does NOT have traits itself (i.e. it does not inherit from ‘HasTraits’).

connect(obj, trait_name)

Connect the extension point to a trait on an object.

This allows the object to react when contributions are added or removed from the extension point.

fixme: It would be nice to be able to make the connection automatically but we would need a slight tweak to traits to allow the trait type to be notified when a new instance that uses the trait type is created.

static connect_extension_point_traits(obj)

Connect all of the ‘ExtensionPoint’ traits on an object.

disconnect(obj, trait_name)

Disconnect the extension point from a trait on an object.

static disconnect_extension_point_traits(obj)

Disconnect all of the ‘ExtensionPoint’ traits on an object.

get(obj, trait_name)

Trait type getter.

set(obj, name, value)

Trait type setter.