set variable for scroll offset

necessary to maintain scroll positions across popup & Nav

Signed-off-by: kernelkind <kernelkind@gmail.com>

crates/notedeck_columns/src/ui/profile/mod.rs

@@ -65,10 +65,15 @@ impl<'a, 'd> ProfileView<'a, 'd> {
 
     pub fn ui(&mut self, ui: &mut egui::Ui) -> Option<ProfileViewAction> {
         let scroll_id = egui::Id::new(("profile_scroll", self.col_id, self.pubkey));
+        let offset_id = scroll_id.with("scroll_offset");
 
-        ScrollArea::vertical()
-            .id_salt(scroll_id)
-            .show(ui, |ui| {
+        let mut scroll_area = ScrollArea::vertical().id_salt(scroll_id);
+
+        if let Some(offset) = ui.data(|i| i.get_temp::<f32>(offset_id)) {
+            scroll_area = scroll_area.vertical_scroll_offset(offset);
+        }
+
+        let output = scroll_area.show(ui, |ui| {
             let mut action = None;
             let txn = Transaction::new(self.note_context.ndb).expect("txn");
             if let Ok(profile) = self
@@ -124,8 +129,11 @@ impl<'a, 'd> ProfileView<'a, 'd> {
             }
 
             action
-            })
-            .inner
+        });
+
+        ui.data_mut(|d| d.insert_temp(offset_id, output.state.offset.y));
+
+        output.inner
     }
 
     fn profile_body(&mut self, ui: &mut egui::Ui, profile: ProfileRecord<'_>) -> bool {

crates/notedeck_columns/src/ui/thread.rs

@@ -54,12 +54,19 @@ impl<'a, 'd> ThreadView<'a, 'd> {
     pub fn ui(&mut self, ui: &mut egui::Ui) -> Option<NoteAction> {
         let txn = Transaction::new(self.note_context.ndb).expect("txn");
 
-        egui::ScrollArea::vertical()
+        let mut scroll_area = egui::ScrollArea::vertical()
             .id_salt(self.id_source)
             .animated(false)
             .auto_shrink([false, false])
-            .scroll_bar_visibility(egui::scroll_area::ScrollBarVisibility::AlwaysVisible)
-            .show(ui, |ui| {
+            .scroll_bar_visibility(egui::scroll_area::ScrollBarVisibility::AlwaysVisible);
+
+        let offset_id = self.id_source.with("scroll_offset");
+
+        if let Some(offset) = ui.data(|i| i.get_temp::<f32>(offset_id)) {
+            scroll_area = scroll_area.vertical_scroll_offset(offset);
+        }
+
+        let output = scroll_area.show(ui, |ui| {
             let root_id = match RootNoteId::new(
                 self.note_context.ndb,
                 self.note_context.note_cache,
@@ -109,7 +116,10 @@ impl<'a, 'd> ThreadView<'a, 'd> {
                 self.jobs,
             )
             .show(ui)
-            })
-            .inner
+        });
+
+        ui.data_mut(|d| d.insert_temp(offset_id, output.state.offset.y));
+
+        output.inner
     }
 }

crates/notedeck_columns/src/ui/timeline.rs

@@ -130,6 +130,12 @@ fn timeline_ui(
         .auto_shrink([false, false])
         .scroll_bar_visibility(ScrollBarVisibility::AlwaysVisible);
 
+    let offset_id = scroll_id.with("timeline_scroll_offset");
+
+    if let Some(offset) = ui.data(|i| i.get_temp::<f32>(offset_id)) {
+        scroll_area = scroll_area.vertical_scroll_offset(offset);
+    }
+
     if let Some(goto_top_resp) = goto_top_resp {
         if goto_top_resp.clicked() {
             scroll_area = scroll_area.vertical_scroll_offset(0.0);
@@ -163,6 +169,8 @@ fn timeline_ui(
         .show(ui)
     });
 
+    ui.data_mut(|d| d.insert_temp(offset_id, scroll_output.state.offset.y));
+
     let at_top_after_scroll = scroll_output.state.offset.y == 0.0;
     let cur_show_top_button = ui.ctx().data(|d| d.get_temp::<bool>(show_top_button_id));
 
@@ -362,9 +370,9 @@ impl<'a, 'd> TimelineTabView<'a, 'd> {
         let len = self.tab.notes.len();
 
         let is_muted = self.is_muted;
+
         self.tab
             .list
-            .clone()
             .borrow_mut()
             .ui_custom_layout(ui, len, |ui, start_index| {
                 ui.spacing_mut().item_spacing.y = 0.0;