use sctk::reexports::client::Main;
use sctk::reexports::protocols::unstable::text_input::v3::client::zwp_text_input_v3::{
Event as TextInputEvent, ZwpTextInputV3,
};
use crate::event::{Ime, WindowEvent};
use crate::platform_impl::wayland;
use crate::platform_impl::wayland::event_loop::WinitState;
use super::{Preedit, TextInputHandler, TextInputInner, ZwpTextInputV3Ext};
#[inline]
pub(super) fn handle_text_input(
text_input: Main<ZwpTextInputV3>,
inner: &mut TextInputInner,
event: TextInputEvent,
winit_state: &mut WinitState,
) {
let event_sink = &mut winit_state.event_sink;
match event {
TextInputEvent::Enter { surface } => {
let window_id = wayland::make_wid(&surface);
let window_handle = match winit_state.window_map.get_mut(&window_id) {
Some(window_handle) => window_handle,
None => return,
};
inner.target_window_id = Some(window_id);
if window_handle.ime_allowed.get() {
text_input.enable();
text_input.set_content_type_by_purpose(window_handle.ime_purpose.get());
text_input.commit();
event_sink.push_window_event(WindowEvent::Ime(Ime::Enabled), window_id);
}
let text_input_handler = TextInputHandler {
text_input: text_input.detach(),
};
window_handle.text_input_entered(text_input_handler);
}
TextInputEvent::Leave { surface } => {
text_input.disable();
text_input.commit();
let window_id = wayland::make_wid(&surface);
let window_handle = match winit_state.window_map.get_mut(&window_id) {
Some(window_handle) => window_handle,
None => return,
};
inner.target_window_id = None;
let text_input_handler = TextInputHandler {
text_input: text_input.detach(),
};
window_handle.text_input_left(text_input_handler);
event_sink.push_window_event(WindowEvent::Ime(Ime::Disabled), window_id);
}
TextInputEvent::PreeditString {
text,
cursor_begin,
cursor_end,
} => {
let text = text.unwrap_or_default();
let cursor_begin = usize::try_from(cursor_begin)
.ok()
.and_then(|idx| text.is_char_boundary(idx).then(|| idx));
let cursor_end = usize::try_from(cursor_end)
.ok()
.and_then(|idx| text.is_char_boundary(idx).then(|| idx));
inner.pending_preedit = Some(Preedit {
text,
cursor_begin,
cursor_end,
});
}
TextInputEvent::CommitString { text } => {
inner.pending_preedit = None;
inner.pending_commit = Some(text.unwrap_or_default());
}
TextInputEvent::Done { .. } => {
let window_id = match inner.target_window_id {
Some(window_id) => window_id,
_ => return,
};
event_sink.push_window_event(
WindowEvent::Ime(Ime::Preedit(String::new(), None)),
window_id,
);
if let Some(text) = inner.pending_commit.take() {
event_sink.push_window_event(WindowEvent::Ime(Ime::Commit(text)), window_id);
}
if let Some(preedit) = inner.pending_preedit.take() {
let cursor_range = preedit
.cursor_begin
.map(|b| (b, preedit.cursor_end.unwrap_or(b)));
event_sink.push_window_event(
WindowEvent::Ime(Ime::Preedit(preedit.text, cursor_range)),
window_id,
);
}
}
_ => (),
}
}