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Hide parts of the textual representation in the editor [message #1763658]

Thu, 18 May 2017 08:01

Eclipse User

Hi everybody,

I'm currently working on a DSL project, in which I have some potentially long datatype paths like this:

method myMethod(in /very/long/path/to/Datatype var1, out /another/long/path/to/Datatype2 var2)

Is there a possibility in Xtext to hide some parts of a string in the editor, but not to loose the information in the node model? My goal is to be able to toggle between the full and a short representation like this:

method myMethod(in Datatype var1, out Datatype2 var2)

It would be really helpful if someone could point me in the right direction.

Many thanks in advance!

Tobias

Re: Hide parts of the textual representation in the editor [message #1763670 is a reply to message #1763658]

Thu, 18 May 2017 09:13

Eclipse User

have a look at the feature called folding. i dont know if it is applicable at your usecase though

Re: Hide parts of the textual representation in the editor [message #1763675 is a reply to message #1763670]

Thu, 18 May 2017 09:38

Eclipse User

I managed to divide the paths in two segments, one for the absolute path and one for the actual type.

Is there a possibility to hide/collapse/fold an element on a token basis?

Folding normally works only on full lines.

Re: Hide parts of the textual representation in the editor [message #1763676 is a reply to message #1763675]

Thu, 18 May 2017 09:48

Eclipse User

nope i think you have to dig into how folding works in eclipse text editors (the general term is projection i think)
and if this is possbile to be applied on a non line base.

Re: Hide parts of the textual representation in the editor [message #1763680 is a reply to message #1763676]

Thu, 18 May 2017 10:10

Eclipse User

p.s: and if this is only about readablity you might have a look at the word wrap feature as well https://bugs.eclipse.org/bugs/show_bug.cgi?id=35779

Re: Hide parts of the textual representation in the editor [message #1763681 is a reply to message #1763676]

Thu, 18 May 2017 10:22

Eclipse User

Thank you, Christian!

I will dig into the ProjectionViewer in order to get the desired result. There is a master/slave document mechanism which could be the solution.

The word wrap feature on the other hand is not exactly what I'm looking for, but thanks for the hint.

I will post a possible solution if I find one.

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