Bug 389092

Summary:	Please add graphviz dot file format preview support
Product:	[Applications] kate	Reporter:	Igor Zhuravlov <zhuravlov.ip>
Component:	plugin-preview	Assignee:	KWrite Developers <kwrite-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	wishlist	CC:	kossebau
Priority:	NOR
Version First Reported In:	16.08
Target Milestone:	---
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Igor Zhuravlov 2018-01-17 06:03:25 UTC

Is it possible? It would be very useful.

Maybe a more general solution is possible? When preview plugin takes a text being edited, sends it to some command pre-specified, and displays an output from that command in the preview area. Different commands may be specified for various file extensions of MIME types.

Comment 1 Friedrich W. H. Kossebau 2018-01-17 09:19:04 UTC

It is possible, needs the KGraphViewer KParts plugin installed (I only know about this one).

See example screenshot at https://frinring.wordpress.com/2017/09/25/ktexteditorpreviewplugin-0-1-0/ for editing Dot files in action :)

I agree with your proposed approach of a more general solution. Actually, the preview plugin actually does it: any actual rendering is delegated to other plugins, based on the MIME type, and does so by reusing the existing KParts plugin infrastructure.
The preview plugin itself just takes a snapshot of the current text and sends it over to the KParts plugin, any rendering and further UI is completely controlled by those KParts plugins.

Comment 2 Igor Zhuravlov 2018-01-18 01:53:34 UTC

I've installed KGraphViewer, and now it works like a charm. Thank you very much!