LibGUI/AbstractView: Remove `on_selection`

Since the introduction of multi-select, we have had both `on_selection`
and `on_selection_change`, the latter of which was only invoked when a
change in selection came in through the model.

This removes `AbstractView::on_selection` and replaces it usage with
the more explicit `on_selection_change` everywhere.

1 files changed, 2 insertions, 1 deletions

diff --git a/Userland/Applications/FileManager/main.cpp b/Userland/Applications/FileManager/main.cpp
index 61a7ddf8a7..9c7692724a 100644
--- a/Userland/Applications/FileManager/main.cpp
+++ b/Userland/Applications/FileManager/main.cpp
@@ -1049,7 +1049,8 @@ int run_in_windowed_mode(RefPtr<Core::ConfigFile> config, String initial_locatio
         }
     };
 
-    tree_view.on_selection = [&](const GUI::ModelIndex& index) {
+    tree_view.on_selection_change = [&] {
+        const auto& index = tree_view.selection().first();
         if (directories_model->m_previously_selected_index.is_valid())
             directories_model->update_node_on_selection(directories_model->m_previously_selected_index, false);