A Complete Proxy Model Implementation - Part 2

In the previous episode, we implemented a proxy model for reversing rows but left out one last signal to react to, namely layoutAboutToBeChanged.

Reacting to that signal is rather difficult, which is why we have dedicated a complete episode for that.

It will, among other things, take us through a discussion on persistent model indexes.

0:00 Introduction
1:11 Understanding QModelIndex
2:57 Updating the persistent model indexes
3:46 signal layoutAboutToBeChanged
5:58 signal layoutChanged
8:00 Why not for rowsInserted, etc.
9:50 Let me show you where persistent indexes get updated for rowsInserted

The example code showcased in this video is available here: https://github.com/KDAB/kdabtv/tree/master/Qt-Widgets-and-more/ReverseRowsProxyModel

All QML tips and tricks videos : https://www.youtube.com/playlist?list=PL6CJYn40gN6jWHP5krsQrVGyYtKh3A3be

All Qt Widgets and more videos:
https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI