72 lines
1.7 KiB
Rust
72 lines
1.7 KiB
Rust
// Copyright 2025 System76 <info@system76.com>
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// SPDX-License-Identifier: MPL-2.0 AND MIT
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//! Operate on dropdown widgets.
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use super::State;
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use iced::Rectangle;
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use iced_core::widget::{Id, Operation};
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pub trait Dropdown {
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fn close(&mut self);
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fn open(&mut self);
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}
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/// Produces a [`Task`] that closes a [`Dropdown`] popup.
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pub fn close<T>(id: Id) -> impl Operation<T> {
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struct Close(Id);
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impl<T> Operation<T> for Close {
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fn custom(&mut self, state: &mut dyn std::any::Any, id: Option<&Id>) {
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if id.map_or(true, |id| id != &self.0) {
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return;
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}
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let Some(state) = state.downcast_mut::<State>() else {
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return;
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};
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state.close();
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}
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fn container(
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&mut self,
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_id: Option<&Id>,
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_bounds: Rectangle,
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operate_on_children: &mut dyn FnMut(&mut dyn Operation<T>),
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) {
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operate_on_children(self)
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}
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}
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Close(id)
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}
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/// Produces a [`Task`] that opens a [`Dropdown`] popup.
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pub fn open<T>(id: Id) -> impl Operation<T> {
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struct Open(Id);
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impl<T> Operation<T> for Open {
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fn custom(&mut self, state: &mut dyn std::any::Any, id: Option<&Id>) {
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if id.map_or(true, |id| id != &self.0) {
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return;
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}
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let Some(state) = state.downcast_mut::<State>() else {
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return;
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};
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state.open();
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}
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fn container(
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&mut self,
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_id: Option<&Id>,
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_bounds: Rectangle,
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operate_on_children: &mut dyn FnMut(&mut dyn Operation<T>),
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) {
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operate_on_children(self)
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}
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}
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Open(id)
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}
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