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Filter Java types in content assist [message #1068003]

Thu, 11 July 2013 15:44

Udo Walker

Messages: 81
Registered: July 2009

Member

Hi,

how can I filter Java types in the content assist in a Xtext generated DSL?

I have a rule with an attribute which refers to a JvmTypeReference.

I want to filter the content assist so that only types are shown which implement a specific interface.

How should I do that? Is the MyDslProposalProvider the correct place and how to filter the types there?

With regards,
Udo

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Re: Filter Java types in content assist [message #1068009 is a reply to message #1068003]

Thu, 11 July 2013 16:14

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi,

how does your grammar look like?
yes the MyDslProposalProvider is a good place (you may have to write a validation rule as well)

you may have a look at org.eclipse.xtext.xbase.ui.contentassist.XbaseProposalProvider.completeJavaTypes(ContentAssistContext, EReference, ICompletionProposalAcceptor)
and follow ups.

~Christian

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: Filter Java types in content assist [message #1068016 is a reply to message #1068009]

Thu, 11 July 2013 17:08

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

P.S: may this is still working

http://kthoms.wordpress.com/2012/03/14/how-to-limit-proposed-java-types-to-implementors-of-an-interface/

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: Filter Java types in content assist [message #1068102 is a reply to message #1068016]

Fri, 12 July 2013 07:56

Udo Walker

Messages: 81
Registered: July 2009

Member

Thanks for the blog you mentioned. It is a good starting point.

Now I fight with the missing documentation of the methods in XbaseProposalProvider and how everything is linked together. Sad

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Re: Filter Java types in content assist [message #1068117 is a reply to message #1068102]

Fri, 12 July 2013 09:39

Udo Walker

Messages: 81
Registered: July 2009

Member

I got everything working as I wanted and the proposal dialog shows me only the classes I want to see.

But now I have the problem that when I press ENTER on a proposal the class name is not inserted in the DSL file anymore. What is the problem?

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