Eclipse Community Forums: TMF (Xtext) » accessing user defined templates at runtime

Help

Home

Home » Modeling » TMF (Xtext) » accessing user defined templates at runtime

Show: Today's Messages :: Show Polls :: Message Navigator

accessing user defined templates at runtime [message #1011492]

Tue, 19 February 2013 11:22

n d
Messages: 10
Registered: February 2013

Junior Member

Hi all,

I would like to know if there is anyway to access the templates defined in the templates.xml from the MyDslProposalProvider class.

The reason is I would like to (de)activate them at runtime according to the rule/Eobject the parser is in.

Thanks to all.
Nuno

Report message to a moderator

Re: accessing user defined templates at runtime [message #1011745 is a reply to message #1011492]

Wed, 20 February 2013 02:26

Alexander Nittka
Messages: 1081
Registered: July 2009

Senior Member

Hi,

you would not do that in the <Language>ProposalProvider. Bind your own implementation of ITemplateProposalProvider (probably extending DefaultTemplateProposalProvider).
The validate-Methods seem to be good points for including or excluding templates...

Alex

Need training, onsite consulting or any other kind of help for Xtext?
Go visit http://xtext.itemis.com or send a mail to xtext@itemis.de

Report message to a moderator

Re: accessing user defined templates at runtime [message #1012278 is a reply to message #1011745]

Thu, 21 February 2013 04:02

n d
Messages: 10
Registered: February 2013

Junior Member

Hi Alexander,

Thank you very much for your reply.
I have followed your suggestion and defined my own template provider.
If I understood you correctly, you suggested that the call for the (de)activation call to be done in the validation methods (ex. org.xtext.example.mydsl.validation). If so, can you give me tell me if there is a clean way to access the template provider from there.

Thanks a lot,
Nuno

Report message to a moderator

Re: accessing user defined templates at runtime [message #1012285 is a reply to message #1012278]

Thu, 21 February 2013 04:16

n d
Messages: 10
Registered: February 2013

Junior Member

Hi again,

Nevermind, just solved it in another way Smile

Thanks again,
Nuno

Report message to a moderator

Re: accessing user defined templates at runtime [message #1012288 is a reply to message #1012278]

Thu, 21 February 2013 04:19

Alexander Nittka
Messages: 1081
Registered: July 2009

Senior Member

Hi,

have you bound your implementation in the UIModule? If you override the validate methods, you should have everything you need available.
The context allows you to determine at which position content assist is invoked (what is to be completed), the template is the candidate template that is to be proposed.

So you check whether you want to show the template at that point and return true or false accordingly... (Breakpoints and debug mode are always helpful.)

Alex

Need training, onsite consulting or any other kind of help for Xtext?
Go visit http://xtext.itemis.com or send a mail to xtext@itemis.de

Report message to a moderator

Re: accessing user defined templates at runtime [message #1012822 is a reply to message #1011492]

Fri, 22 February 2013 04:31

n d
Messages: 10
Registered: February 2013

Junior Member

Hi,

My grammar is basically a generic JSon parser which uses a JSon schema in the background for validation. So, in my createTemplates method, I check the current node's parent and (de)activate the templates based on his key before the actual template proposal creation (i.e. the super method)

Thanks again for the help.
Nuno

Ps. Perhaps you have some idea concerning another problem that I've encountered
http://www.eclipse.org/forums/index.php/t/455949/

Report message to a moderator

Re: accessing user defined templates at runtime [message #1012834 is a reply to message #1012822]

Fri, 22 February 2013 04:59

Christian Dietrich
Messages: 4426
Registered: July 2009

Senior Member

Hi,

i think you still missed that alex was talking about
org.eclipse.xtext.ui.editor.templates.AbstractTemplateProposalProvider.validate(Template, ContentAssistContext)
and not the normal java validator

~Christian

Report message to a moderator

Re: accessing user defined templates at runtime [message #1012945 is a reply to message #1011492]

Fri, 22 February 2013 08:59

n d
Messages: 10
Registered: February 2013

Junior Member

Hi,

Right. Thanks for the heads up Wink

Nuno

Report message to a moderator

Previous Topic:	error when generating my language
Next Topic:	Left recursion

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Fri May 24 12:10:55 EDT 2013