More Versatile Options Morph

[seandenigris]

Right now, there is MATokenCompletionMorph and the morphs that present a visible list of all options e.g. MAMultiSelectListMorph. Each of these has a use case. The problem is that for use within Magritte, e.g. for meta-describing descriptions themselves, there seems to be no way to specify without creating a dependency from Model to Morph. Magritte's extension system could be used to replace individual uses of the former with the latter, e.g.:

'*Magritte-Morph'
MARelationDescription>>#descriptionClassesWithMorphic: description
	<magritteDescription: #descriptionClasses>
	^ description
			morphClass: MATokenCompletionMorph;
			yourself

Although, maybe the best solution would be to have the default be a combined morph - like a filtered list with auto-completion?