input: Clean to reset selection and scroll offset. (#1326)

- Focus back to input when click `clean` button.

crates/ui/src/input/state.rs

@@ -1512,6 +1512,8 @@ impl InputState {
 
     pub(super) fn clean(&mut self, window: &mut Window, cx: &mut Context<Self>) {
         self.replace_text("", window, cx);
+        self.selected_range = (0..0).into();
+        self.scroll_to(0, cx);
     }
 
     pub(super) fn escape(&mut self, action: &Escape, window: &mut Window, cx: &mut Context<Self>) {

crates/ui/src/input/text_input.rs

@@ -406,6 +406,7 @@ impl RenderOnce for TextInput {
                                 move |_, window, cx| {
                                     state.update(cx, |state, cx| {
                                         state.clean(window, cx);
+                                        state.focus(window, cx);
                                     })
                                 }
                             }))