tui: Select correct list item on issue page

radicle-tui/src/app/page.rs

@@ -162,8 +162,8 @@ impl ViewPage for IssuePage {
         context: &Context,
         theme: &Theme,
     ) -> Result<()> {
-        let (id, issue) = &self.issue;
-        let list = widget::issue::list(context, theme, (*id, issue)).to_boxed();
+        let (id, issue) = self.issue.clone();
+        let list = widget::issue::list(context, theme, (id, issue)).to_boxed();
         let shortcuts = widget::common::shortcuts(
             theme,
             vec![

radicle-tui/src/ui/cob.rs

@@ -288,6 +288,12 @@ impl ListItem for IssueItem {
     }
 }
 
+impl PartialEq for IssueItem {
+    fn eq(&self, other: &Self) -> bool {
+        self.id == other.id
+    }
+}
+
 pub fn format_patch_state(state: &PatchState) -> (String, Color) {
     match state {
         PatchState::Open { conflicts: _ } => (" ● ".into(), Color::Green),

radicle-tui/src/ui/state.rs

@@ -25,11 +25,8 @@ pub struct ItemState {
 }
 
 impl ItemState {
-    pub fn new(len: usize) -> Self {
-        Self {
-            selected: Some(0),
-            len,
-        }
+    pub fn new(selected: Option<usize>, len: usize) -> Self {
+        Self { selected, len }
     }
 
     pub fn selected(&self) -> Option<usize> {

radicle-tui/src/ui/widget/common/list.rs

@@ -156,7 +156,7 @@ where
             items: items.to_vec(),
             header,
             widths,
-            state: ItemState::new(items.len()),
+            state: ItemState::new(Some(0), items.len()),
             theme,
         }
     }
@@ -230,7 +230,7 @@ where
 /// A list component that can display [`ListItem`]'s.
 pub struct List<V>
 where
-    V: ListItem + Clone,
+    V: ListItem + Clone + PartialEq,
 {
     /// Items held by this list.
     items: Vec<V>,
@@ -242,12 +242,17 @@ where
 
 impl<V> List<V>
 where
-    V: ListItem + Clone,
+    V: ListItem + Clone + PartialEq,
 {
-    pub fn new(items: &[V], theme: Theme) -> Self {
+    pub fn new(items: &[V], selected: Option<V>, theme: Theme) -> Self {
+        let selected = match selected {
+            Some(item) => items.iter().position(|i| i == &item),
+            None => Some(0),
+        };
+
         Self {
             items: items.to_vec(),
-            state: ItemState::new(items.len()),
+            state: ItemState::new(selected, items.len()),
             theme,
         }
     }
@@ -255,7 +260,7 @@ where
 
 impl<V> WidgetComponent for List<V>
 where
-    V: ListItem + Clone,
+    V: ListItem + Clone + PartialEq,
 {
     fn view(&mut self, properties: &Props, frame: &mut Frame, area: Rect) {
         use tuirealm::tui::widgets::{List, ListItem};

radicle-tui/src/ui/widget/issue.rs

@@ -22,9 +22,9 @@ pub struct LargeList {
 }
 
 impl LargeList {
-    pub fn new(context: &Context, theme: &Theme) -> Self {
+    pub fn new(context: &Context, theme: &Theme, selected: Option<(IssueId, Issue)>) -> Self {
         let repo = context.repository();
-        let issues = cob::issue::all(repo).unwrap_or(vec![]);
+        let issues = cob::issue::all(repo).unwrap_or_default();
 
         let mut items = issues
             .iter()
@@ -34,7 +34,10 @@ impl LargeList {
         items.sort_by(|a, b| b.timestamp().cmp(a.timestamp()));
         items.sort_by(|a, b| a.state().cmp(b.state()));
 
-        let list = Widget::new(List::new(&items, theme.clone()))
+        let selected =
+            selected.map(|(id, issue)| IssueItem::from((context.profile(), repo, id, issue)));
+
+        let list = Widget::new(List::new(&items, selected, theme.clone()))
             .highlight(theme.colors.item_list_highlighted_bg);
 
         let container = common::labeled_container(theme, "Issues", list.to_boxed());
@@ -57,8 +60,8 @@ impl WidgetComponent for LargeList {
     }
 }
 
-pub fn list(context: &Context, theme: &Theme, _issue: (IssueId, &Issue)) -> Widget<LargeList> {
-    let list = LargeList::new(context, theme);
+pub fn list(context: &Context, theme: &Theme, issue: (IssueId, Issue)) -> Widget<LargeList> {
+    let list = LargeList::new(context, theme, Some(issue));
     Widget::new(list)
 }