kate-ctags plugin not working

[Friedrich W. H. Kossebau]

Am Donnerstag, 8. November 2018, 16:33:32 CET schrieb René J.V. Bertin:
> Hi,
> 
> The Kate CTags plugin came up on the other ML. I agree that it could be
> useful to support it (CTags handles a lot languages, including TCl which is
> relevant to me) so I thought I'd have a look if it worked after adding the
> appropriate service type to its metadata.
> 
> It doesn't. The toolview UI is completely garbled, and when I use the
> actions from the CTags menu I get terminal errors like these:
> 
> QMetaObject::invokeMethod: No such method
> KTextEditorIntegration::MainWindow::showToolView(QWidget *)
> QMetaObject::invokeMethod: No such method
> KTextEditorIntegration::MainWindow::openUrl(const QUrl &,const QString &)
> QMetaObject::invokeMethod: No such method
> KTextEditorIntegration::MainWindow::showToolView(QWidget *)

The latter is quickly explained:

the KTextEditorIntegration::MainWindow does not (yet) have those methods 
implemented and thus also not tagged as slots for introspection to be able to 
call them via the Qt's meta-based system. No idea why they do not exist, 
possible got added later to KTextEditor and no-one updated the KDevelop 
variant, which got unnoticed due to not being used by current supported 
plugins.

The list of methods in KTextEditorIntegration::MainWindow needs to be manually 
maintained, no C++ interface class is used here for whatever reason, thus no 
compiler assistance. For more details about the design see
https://api.kde.org/frameworks/ktexteditor/html/
classKTextEditor_1_1MainWindow.html#details

So this needs fixing with a patch which adds the implementations of those 
missing methods to KTextEditorIntegration::MainWindow to do whatever is needed 
to do within KDevelop's platform.

Cheers
Friedrich