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I would like to present the user with a variable number of scenes within the GUI (arranged say horizontally) composing different views of the data, depending on runtime conditions?

I really don't want to redefine the GUI, and a number of scene related traits for every use case. (i.e. bool_scene_1_viewable=Bool(), bool_scene_2_viewable=Bool()... )

It looks like I might be able to define a wildcard trait: scene_=Instance(Scene,()). But, if this is the best way to do it, how would I go about combining n traits into a View?

user3391229
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1 Answers1

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(A) I did not distinguish between "runtime" dependence, and merely depending on some number of traits that are declared after initialization (but before config_traits is called). As such, I can use default_traits_view to create a view that depends on the current state of the object and its members.

(B) I was also confused about how to turn this list_of_scenes into an object that could be viewed. After all, HGroup and VGroup don't take lists! I was missing that * could be used to unpack the list.

Steps: 1. init class instance 

foo=Foo()
  1. add scenes as you like
foo.add_trait(string_scene_name,scene)
foo.scene_name_list.append(string_scene_name)
foo.scene_list.append(scene)
  1. Create group within default_traits_view()
items=[Item(name,style='custom') for name in self. scene_name_list]
scene_group=Group( *items)
user3391229
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