Allow selecting all search matches in buffer

crates/workspace/src/searchable.rs

@@ -47,6 +47,7 @@ pub trait SearchableItem: Item {
         matches: Vec<Self::Match>,
         cx: &mut ViewContext<Self>,
     );
+    fn select_matches(&mut self, matches: Vec<Self::Match>, cx: &mut ViewContext<Self>);
     fn match_index_for_direction(
         &mut self,
         matches: &Vec<Self::Match>,
@@ -102,6 +103,7 @@ pub trait SearchableItemHandle: ItemHandle {
         matches: &Vec<Box<dyn Any + Send>>,
         cx: &mut WindowContext,
     );
+    fn select_matches(&self, matches: &Vec<Box<dyn Any + Send>>, cx: &mut WindowContext);
     fn match_index_for_direction(
         &self,
         matches: &Vec<Box<dyn Any + Send>>,
@@ -165,6 +167,12 @@ impl<T: SearchableItem> SearchableItemHandle for ViewHandle<T> {
         let matches = downcast_matches(matches);
         self.update(cx, |this, cx| this.activate_match(index, matches, cx));
     }
+
+    fn select_matches(&self, matches: &Vec<Box<dyn Any + Send>>, cx: &mut WindowContext) {
+        let matches = downcast_matches(matches);
+        self.update(cx, |this, cx| this.select_matches(matches, cx));
+    }
+
     fn match_index_for_direction(
         &self,
         matches: &Vec<Box<dyn Any + Send>>,