feat: pr file tree item switching

src/component/file_tree.rs

@@ -28,6 +28,7 @@ pub(crate) struct FileTree {
 pub(crate) struct Item {
     item: util::file::FileTreeItem,
     is_expanded: bool,
+    is_highlighed: bool,
     on_click: Box<dyn Fn(&mut gpui::Window, &mut gpui::App) + 'static>,
 }
 
@@ -38,6 +39,7 @@ struct FileTreeStateInner {
     list_state: gpui::ListState,
     collapsed_dirs: HashSet<Arc<str>>,
     visible_items: Vec<usize>,
+    highlighted_items: HashSet<usize>,
 }
 
 pub(crate) fn file_tree(
@@ -57,6 +59,7 @@ impl FileTreeState {
             list_state: gpui::ListState::new(0, gpui::ListAlignment::Top, px(50.)),
             collapsed_dirs: HashSet::new(),
             visible_items: Vec::new(),
+            highlighted_items: HashSet::new(),
         })))
     }
 
@@ -66,6 +69,12 @@ impl FileTreeState {
         state.visible_items = (0..items.len()).collect::<Vec<_>>();
     }
 
+    pub(crate) fn highlight_item(&mut self, index: usize) {
+        let mut state = self.0.borrow_mut();
+        state.highlighted_items.clear();
+        state.highlighted_items.insert(index);
+    }
+
     pub(crate) fn toggle_directory(
         &mut self,
         dir_path: &Arc<str>,
@@ -125,6 +134,7 @@ impl gpui::RenderOnce for FileTree {
             let item = (self.item)(item_index, window, cx);
             let item = Item {
                 is_expanded: !state.collapsed_dirs.contains(&item.full_path),
+                is_highlighed: state.highlighted_items.contains(&item_index),
                 item,
                 on_click: Box::new(move |window, cx| {
                     if let Some(f) = &on_item_click {
@@ -153,7 +163,13 @@ impl gpui::RenderOnce for Item {
             .py_0p5()
             .pl(px(8. + (8 * self.item.level) as f32))
             .rounded_sm()
-            .hover(|it| it.bg(theme.colors.surface_hover))
+            .hover(|it| {
+                if self.is_highlighed {
+                    it
+                } else {
+                    it.bg(theme.colors.surface_hover)
+                }
+            })
             .on_click(move |_, window, cx| (self.on_click)(window, cx))
             .when(
                 matches!(self.item.kind, FileTreeItemKind::Directory),
@@ -171,6 +187,10 @@ impl gpui::RenderOnce for Item {
             .when(matches!(self.item.kind, FileTreeItemKind::File), |it| {
                 it.child(font_icon(FontIcon::FileBracesCorner).size_3())
             })
+            .when(self.is_highlighed, |it| {
+                it.bg(theme.colors.accent_muted)
+                    .text_color(theme.colors.accent_fg)
+            })
             .child(text(gpui::SharedString::new(self.item.name)).text_sm())
     }
 }