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ContentAssist - CodeCompletion with Templates for Function-Parameters [message #642500]

Wed, 01 December 2010 15:41

Julian

Messages: 3
Registered: December 2010

Junior Member

Hello,

I include a model of different functions to my DSL with the import-URI mechanism.

The CodeCompletion works so far. I get a Proposal list with all modelled functions + parameters and additional Information.

I did this in the {DSL}ProposalProvider as mentioned in the xText-Documentation.

If I choose one Proposal from the list, the proposal will be inserted.
Like:
... Testfunction (int para1, int para2) ...

What I want to achieve now is, that there are placeholders for the parameters, so that I can enter one an switch to the other one with a tab. As is known from the JavaIDE when I insert a function.

At which point I have to start??

The get the information for the proposal from a List with all functions. The functions createProposal and createAdditionalInformation just build a String from the information.

part of my ProposalProvider

				

for (int j=0; j < functions.size(); j++) {
			
			String proposal = pu.createProposal(functions.get(j));
			String additionalInformation = pu.createAdditionalInformation(functions.get(j));
			ICompletionProposal prop = createCompletionProposal(proposal, context);
			ConfigurableCompletionProposal confp = (ConfigurableCompletionProposal) prop;		
			confp.setAdditionalProposalInfo(additionalInformation);
			acceptor.accept(prop);

		}

Julian

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Re: ContentAssist - CodeCompletion with Templates for Function-Parameters [message #642587 is a reply to message #642500]

Wed, 01 December 2010 21:16

Meinte Boersma

Messages: 434
Registered: July 2009
Location: Leiden, Netherlands

Senior Member

You'd use Template Proposals (§7.4 in the User Guide) for this, not the content assist.

Xtext blogs: executable models...again? | workshop material | custom scoping with Xtend

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Re: ContentAssist - CodeCompletion with Templates for Function-Parameters [message #642680 is a reply to message #642500]

Thu, 02 December 2010 10:09

Sebastian Zarnekow

Messages: 3118
Registered: July 2009

Senior Member

Hi Julian,

Xtext supports somewhat limited placeholders in content proposals out of
the box. Please have a look at
TerminalsProposalProvider#createStringProposal and digg into
ConfigurableCompletionProposal#setSimpleLinkedMode. However, multiple
linked fields in your proposal are not supported out of the box and
you'll have to implement that on your own.

Regards,
Sebastian
--
Need professional support for Eclipse Modeling?
Go visit: http://xtext.itemis.com

Am 01.12.10 16:41, schrieb Julian:
> Hello,
>
> I include a model of different functions to my DSL with the import-URI
> mechanism.
>
> The CodeCompletion works so far. I get a Proposal list with all modelled
> functions + parameters and additional Information.
> I did this in the {DSL}ProposalProvider as mentioned in the
> xText-Documentation.
>
> If I choose one Proposal from the list, the proposal will be inserted.
> Like:
> .. Testfunction (int para1, int para2) ...
>
> What I want to achieve now is, that there are placeholders for the
> parameters, so that I can enter one an switch to the other one with a
> tab. As is known from the JavaIDE when I insert a function.
>
> At which point I have to start??
>
> The get the information for the proposal from a List with all functions.
> The functions createProposal and createAdditionalInformation just build
> a String from the information.
>
> part of my ProposalProvider
>
>
> for (int j=0; j < functions.size(); j++) {
>
> String proposal = pu.createProposal(functions.get(j));
> String additionalInformation =
> pu.createAdditionalInformation(functions.get(j));
> ICompletionProposal prop = createCompletionProposal(proposal, context);
> ConfigurableCompletionProposal confp = (ConfigurableCompletionProposal)
> prop;
> confp.setAdditionalProposalInfo(additionalInformation);
> acceptor.accept(prop);
>
> }
>
>
>
> Julian

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Re: ContentAssist - CodeCompletion with Templates for Function-Parameters [message #642899 is a reply to message #642680]

Fri, 03 December 2010 09:44

Julian

Messages: 3
Registered: December 2010

Junior Member

Hey,

so if i get this right. I can only insert one placehoder with the current ConfigurableCompletionProposal from xText.
If I want two or more (like two or more parameters) i have to extend the current ConfigurableCompletionProposal and implement my own apply-Method.

Julian

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Re: ContentAssist - CodeCompletion with Templates for Function-Parameters [message #642905 is a reply to message #642899]

Fri, 03 December 2010 09:52

Sebastian Zarnekow

Messages: 3118
Registered: July 2009

Senior Member

Hi Julian,

you are right. If you want to have more linked fields, you'll have to
extend the ConfigurableCompletionProposal (or implement an
ICompletionProposal on your own) and set up the linked mode for more
than one field.

Regards,
Sebastian
--
Need professional support for Eclipse Modeling?
Go visit: http://xtext.itemis.com

Am 03.12.10 10:44, schrieb Julian:
> Hey,
>
> so if i get this right. I can only insert one placehoder with the
> current ConfigurableCompletionProposal from xText.
> If I want two or more (like two or more parameters) i have to extend the
> current ConfigurableCompletionProposal and implement my own apply-Method.
>
> Julian

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Re: ContentAssist - CodeCompletion with Templates for Function-Parameters [message #643860 is a reply to message #642905]

Wed, 08 December 2010 14:01

Julian

Messages: 3
Registered: December 2010

Junior Member

Hey Sebastian,

thanks for the tip. I tried extending the ConfigurableCompletionProposal but this causes a lot of problems.
The createCompletionProposal method doesn't work anymore because it return a ConfigurableCompletionProcessor and not my own.
The Second one is the acceptor.accept which also only expects ConfigurableCompletionProposals.

Do I have to modify all this xText-Classes (e.g. AbstractContentProposalProvider) or is there a easier solution??

Maybe I am not seeing the obvious solution Smile

Julian

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