list: Avoid select item when selectable(false). (#1508)

Close #1500

crates/story/src/list_story.rs

@@ -332,6 +332,8 @@ pub struct ListStory {
     focus_handle: FocusHandle,
     company_list: Entity<ListState<CompanyListDelegate>>,
     selected_company: Option<Rc<Company>>,
+    selectable: bool,
+    searchable: bool,
     _subscriptions: Vec<Subscription>,
 }
 
@@ -408,6 +410,8 @@ impl ListStory {
 
         Self {
             focus_handle: cx.focus_handle(),
+            searchable: true,
+            selectable: true,
             company_list,
             selected_company: None,
             _subscriptions,
@@ -420,6 +424,20 @@ impl ListStory {
             self.selected_company = Some(company);
         }
     }
+
+    fn toggle_selectable(&mut self, selectable: bool, _: &mut Window, cx: &mut Context<Self>) {
+        self.selectable = selectable;
+        self.company_list.update(cx, |list, cx| {
+            list.set_selectable(self.selectable, cx);
+        })
+    }
+
+    fn toggle_searchable(&mut self, searchable: bool, _: &mut Window, cx: &mut Context<Self>) {
+        self.searchable = searchable;
+        self.company_list.update(cx, |list, cx| {
+            list.set_searchable(self.searchable, cx);
+        })
+    }
 }
 
 fn random_company() -> Company {
@@ -522,6 +540,22 @@ impl Render for ListStory {
                                 })
                             })),
                     )
+                    .child(
+                        Checkbox::new("selectable")
+                            .label("Selectable")
+                            .checked(self.selectable)
+                            .on_click(cx.listener(|this, check: &bool, window, cx| {
+                                this.toggle_selectable(*check, window, cx)
+                            })),
+                    )
+                    .child(
+                        Checkbox::new("searchable")
+                            .label("Searchable")
+                            .checked(self.searchable)
+                            .on_click(cx.listener(|this, check: &bool, window, cx| {
+                                this.toggle_searchable(*check, window, cx)
+                            })),
+                    )
                     .child(
                         Checkbox::new("loading")
                             .label("Loading")

crates/ui/src/list/list.rs

@@ -138,6 +138,12 @@ where
         self
     }
 
+    /// Sets whether the list is selectable, default is true.
+    pub fn set_selectable(&mut self, selectable: bool, cx: &mut Context<Self>) {
+        self.selectable = selectable;
+        cx.notify();
+    }
+
     pub fn delegate(&self) -> &D {
         &self.delegate
     }
@@ -163,6 +169,10 @@ where
         window: &mut Window,
         cx: &mut Context<Self>,
     ) {
+        if !self.selectable {
+            return;
+        }
+
         self.selected_index = ix;
         self.delegate.set_selected_index(ix, window, cx);
         self.scroll_to_selected_item(window, cx);
@@ -347,6 +357,10 @@ where
     }
 
     fn select_item(&mut self, ix: IndexPath, window: &mut Window, cx: &mut Context<Self>) {
+        if !self.selectable {
+            return;
+        }
+
         self.selected_index = Some(ix);
         self.delegate.set_selected_index(Some(ix), window, cx);
         self.scroll_to_selected_item(window, cx);