libcosmic-yoda/src/widget/dropdown/operation.rs

// Copyright 2025 System76 <info@system76.com>
// SPDX-License-Identifier: MPL-2.0 AND MIT
//! Operate on dropdown widgets.


pub trait Dropdown {
    fn close(&mut self);
    fn open(&mut self);
}

// /// Produces a [`Task`] that closes a [`Dropdown`] popup.
// pub fn close<T>(id: Id) -> impl Operation<T> {
//     struct Close(Id);

//     impl<T> Operation<T> for Close {
//         fn custom(&mut self, state: &mut dyn std::any::Any, id: Option<&Id>) {
//             if id.map_or(true, |id| id != &self.0) {
//                 return;
//             }

//             let Some(state) = state.downcast_mut::<State>() else {
//                 return;
//             };

//             state.close();
//         }

//         fn container(
//             &mut self,
//             _id: Option<&Id>,
//             _bounds: Rectangle,
//             operate_on_children: &mut dyn FnMut(&mut dyn Operation<T>),
//         ) {
//             operate_on_children(self)
//         }
//     }

//     Close(id)
// }

// /// Produces a [`Task`] that opens a [`Dropdown`] popup.
// pub fn open<T>(id: Id) -> impl Operation<T> {
//     struct Open(Id);

//     impl<T> Operation<T> for Open {
//         fn custom(&mut self, state: &mut dyn std::any::Any, id: Option<&Id>) {
//             if id.map_or(true, |id| id != &self.0) {
//                 return;
//             }

//             let Some(state) = state.downcast_mut::<State>() else {
//                 return;
//             };

//             state.open();
//         }

//         fn container(
//             &mut self,
//             _id: Option<&Id>,
//             _bounds: Rectangle,
//             operate_on_children: &mut dyn FnMut(&mut dyn Operation<T>),
//         ) {
//             operate_on_children(self)
//         }
//     }

//     Open(id)
// }