Julian Eisel
c355be6fae
No user visible changes expected. There's plenty of duplicated code in the grid and the tree view, and I expect this to become more. This starts the process of unifying these parts, which should also make it easier to add new views. Complexity in the view classes is reduced, and some type shenanigans for C compatibility and general view management can be removed, since there is now a common base type. For the start this ports some of the view reconstruction, where the view and its items are compared to the version of itself in the previous redraw, so that state (highlighted, active, renaming, collapsed, ...) can be preserved. Notifier listening is also ported.