diff options
| -rw-r--r-- | native/src/widget/pick_list.rs | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/native/src/widget/pick_list.rs b/native/src/widget/pick_list.rs index 4f4e751e..f4b60fc4 100644 --- a/native/src/widget/pick_list.rs +++ b/native/src/widget/pick_list.rs @@ -268,6 +268,43 @@ where event_status } } + Event::Mouse(mouse::Event::WheelScrolled { + delta: mouse::ScrollDelta::Lines { y, .. }, + }) if layout.bounds().contains(cursor_position) + && !*self.is_open => + { + fn find_next<'a, T: PartialEq>( + selected: &'a T, + mut options: impl Iterator<Item = &'a T>, + ) -> Option<&'a T> { + let _ = options.find(|&option| option == selected); + + options.next() + } + + let next_option = if y < 0.0 { + if let Some(selected) = self.selected.as_ref() { + find_next(selected, self.options.iter()) + } else { + self.options.first() + } + } else if y > 0.0 { + if let Some(selected) = self.selected.as_ref() { + find_next(selected, self.options.iter().rev()) + } else { + self.options.last() + } + } else { + None + }; + + if let Some(next_option) = next_option { + messages.push((self.on_selected)(next_option.clone())); + } + + return event::Status::Captured; + } + _ => event::Status::Ignored, } } |