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dynamic template proposals in Xtext [message #805930]

Fri, 24 February 2012 10:07

Michal S

Messages: 74
Registered: July 2011

Member

Hello,
I followed the manual here: http://blogs.itemis.de/stundzig/archives/750 to create dynamic templates and it works as expected. My question is, how can I access the EObject of the context?

E.g.
lets have grammar:

Entity1: name=ID parameters=Parameters ;
Parmeters: '(' parameters+=VAL  (',' parameters+=VAL)* ')' ;
Entity2: name=ID reference=[Entity1] parameters=Parameters ;

I want my template proposal shows when Parameters are expected, but only when the container of Parameters object is Entity2 (not Entity1) and I need to access referenced Entity1 to prepare the template.

I would need something like "templateContext.getEObject()" and then I would be able to scope as it is common in scopes provider.
I would expect this ability, when I need dynamic (context content dependent) template proposal, but I don't know, how/where to get it.

Thank you & Best regards,
Michal

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Re: dynamic template proposals in Xtext [message #806006 is a reply to message #805930]

Fri, 24 February 2012 12:16

Andreas Graf

Messages: 211
Registered: July 2009

Senior Member

I am using.

EObject cm = context.getCurrentModel();

Andreas

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Re: dynamic template proposals in Xtext [message #870920 is a reply to message #805930]

Thu, 10 May 2012 09:11

Gianluca Viscomi

Messages: 33
Registered: April 2012
Location: Italy

Member

hi Michal

If you have solved you can show me how?? I also have the same problem!
Thank you!

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Re: dynamic template proposals in Xtext [message #870958 is a reply to message #870920]

Thu, 10 May 2012 10:59

Michal S

Messages: 74
Registered: July 2011

Member

Hi Gianluca,
let's have a look at following example

String id=helper.getId(ga.getSomeEntity());
if(templateContext.getContextType().getId().equals(id)){
	// you can access here the model in the context using context.getCurrentModel()	
	SomeEntity someEntity = (SomeEntity) context.getCurrentModel();
	Template template = new Template("SomeName", "${"+someEntity.getName()+"}", "someId1", someEntity.getName(), true);
	//create a proposal
	TemplateProposal tp = createProposal(template, templateContext, context, getImage(template), getRelevance(template));
	//make it available
	acceptor.accept(tp);		

	}
}

The behaviour can be well adjusted. I use dynamic templates for "best practices" content assist in my DSL...
Regards,
Michal

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