Hello.
I am trying to port XML Vlidation plugin for Kate.
Is there a way how I can associate output of xml checking to specific document? Because when you choose another tab with another document, XML Checker output is still displaying information from previous document checking. And this is confusing.
I want it to behavior like search box (when you press ctrl+F). It is different for every tab and it is dispaying its own text for each document.

I think that I should listen some signal from kate, but which signal and how to connect to it?
Perhaps KTextEditor::MainWindow::viewChanged()?

Here is my code: https://git.reviewboard.kde.org/r/126173/