[fractal/fractal-next] sidebar: Use freeze_notify

[Julian Sparber <jsparber src gnome org>]

commit 7617aaa923d903107ca558c3709ab29452e57af3
Author: Kévin Commaille <zecakeh tedomum fr>
Date:   Fri May 21 17:04:10 2021 +0200

    sidebar: Use freeze_notify
    
    Closes #763

 src/session/sidebar/selection.rs | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/src/session/sidebar/selection.rs b/src/session/sidebar/selection.rs
index 6eeabf76..d978efb9 100644
--- a/src/session/sidebar/selection.rs
+++ b/src/session/sidebar/selection.rs
@@ -168,6 +168,8 @@ impl Selection {
     pub fn set_model<P: IsA<gio::ListModel>>(&self, model: Option<&P>) {
         let priv_ = imp::Selection::from_instance(self);
 
+        let _guard = self.freeze_notify();
+
         let model = model.map(|m| m.clone().upcast::<gio::ListModel>());
 
         let old_model = self.model();
@@ -306,6 +308,8 @@ impl Selection {
     fn items_changed_cb(&self, model: &gio::ListModel, position: u32, removed: u32, added: u32) {
         let priv_ = imp::Selection::from_instance(self);
 
+        let _guard = self.freeze_notify();
+
         let selected = self.selected();
         let selected_room = self.selected_room();