59 lines
1.5 KiB
Rust
59 lines
1.5 KiB
Rust
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use iced::{event, keyboard, mouse, subscription, Command, Event, Subscription};
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use iced_native::widget::{operation, Id, Operation};
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#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
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pub enum Message {
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FocusNext,
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FocusPrevious,
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Unfocus,
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}
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#[must_use]
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pub fn subscription() -> Subscription<Message> {
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subscription::events_with(|event, status| match (event, status) {
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(
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Event::Keyboard(keyboard::Event::KeyPressed {
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key_code: keyboard::KeyCode::Tab,
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modifiers,
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..
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}),
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event::Status::Ignored,
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) => Some(if modifiers.shift() {
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Message::FocusPrevious
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} else {
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Message::FocusNext
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}),
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(Event::Mouse(mouse::Event::ButtonReleased { .. }), _) => Some(Message::Unfocus),
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_ => None,
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})
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}
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/// Unfocuses any actively-focused widget.
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#[must_use]
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pub fn unfocus<Message: 'static>() -> Command<Message> {
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Command::<Message>::widget(unfocus_operation())
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}
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#[must_use]
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fn unfocus_operation<T>() -> impl Operation<T> {
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struct Unfocus {}
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impl<T> Operation<T> for Unfocus {
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fn focusable(&mut self, state: &mut dyn operation::Focusable, _id: Option<&Id>) {
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if state.is_focused() {
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state.unfocus();
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}
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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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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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Unfocus {}
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}
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