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use web_time::{Duration, Instant};
use bevy::{
input::{
keyboard::{Key, KeyboardInput},
ButtonState,
},
prelude::*,
reflect::Reflect,
};
// use bevy_mod_picking::prelude::EntityEvent;
use crate::focus::CurrentFocus;
/// An event that fires when a keyboard button is pressed.
/// The event target is the currently focused entity.
/// Note: This does not continously fire unless a button is released.
#[derive(Clone, PartialEq, Debug, Reflect, Event)]
pub struct WidgetKeyboardButtonEvent {
/// The target of this event
pub target: Entity,
/// The keyboard button pressed
pub code: KeyCode,
}
/// An event that fires when a keyboard character is sent.
/// The event target is the currently focused entity.
#[derive(Clone, PartialEq, Debug, Reflect, Event)]
pub struct WidgetKeyboardCharEvent {
/// The target of this event
pub target: Entity,
/// The char pressed
/// Note this might be a series of chars such as a graphemes
/// which is why we use SmolStr here.
pub c: smol_str::SmolStr,
}
/// An event that fires when the user pastes(ctrl + v).
/// The event target is the currently focused entity.
#[derive(Clone, PartialEq, Debug, Reflect, Event)]
pub struct WidgetPasteEvent {
/// The target of this event
pub target: Entity,
/// The char pressed
/// Note this might be a series of chars such as a graphemes
/// which is why we use SmolStr here.
pub paste: smol_str::SmolStr,
}
#[cfg(target_arch = "wasm32")]
#[derive(Component)]
pub struct WidgetPasteEventWasm {
/// The target of this event
pub target: Entity,
pub receiver: futures_channel::oneshot::Receiver<String>,
}
#[derive(Debug, Deref, DerefMut)]
pub(crate) struct TimeSinceLastPaste(Instant);
impl Default for TimeSinceLastPaste {
fn default() -> Self {
Self(Instant::now())
}
}
#[cfg(target_arch = "wasm32")]
pub(crate) fn read_paste_events(
mut commands: Commands,
mut query: Query<(Entity, &mut WidgetPasteEventWasm)>,
mut time_since_last_paste: Local<TimeSinceLastPaste>,
) {
for (entity, mut event) in &mut query {
let Ok(Some(text)) = event.receiver.try_recv() else {
continue;
};
*time_since_last_paste = TimeSinceLastPaste::default();
commands.trigger_targets(
WidgetPasteEvent {
target: event.target,
paste: smol_str::SmolStr::new(text.to_string()),
},
event.target,
);
commands.entity(entity).despawn();
}
}
pub(crate) fn runner(
mut commands: Commands,
mut time_since_last_paste: Local<TimeSinceLastPaste>,
mut ctrl_pressed: Local<bool>,
mut key_event: EventReader<KeyboardInput>,
current_focus: Res<CurrentFocus>,
) {
let mut v_pressed = false;
for event in key_event.read() {
if event.state == ButtonState::Released {
match &event.key_code {
KeyCode::SuperLeft => *ctrl_pressed = false,
KeyCode::ControlLeft => *ctrl_pressed = false,
KeyCode::KeyV => {
*time_since_last_paste = TimeSinceLastPaste(
TimeSinceLastPaste::default()
.checked_sub(Duration::from_secs_f32(0.5))
.unwrap(),
);
}
_ => {}
}
}
if current_focus.get() != Entity::PLACEHOLDER && event.state == ButtonState::Pressed {
match &event.key_code {
KeyCode::SuperLeft => *ctrl_pressed = true,
KeyCode::ControlLeft => *ctrl_pressed = true,
KeyCode::KeyV => v_pressed = true,
_ => {}
}
if *ctrl_pressed && v_pressed {
if time_since_last_paste.elapsed().as_secs_f32() < 0.1 {
return;
}
#[cfg(not(target_arch = "wasm32"))]
{
let Ok(mut clipboard) = arboard::Clipboard::new() else {
warn!("no clipboard");
return;
};
let Ok(text) = clipboard.get_text() else {
return;
};
*time_since_last_paste = TimeSinceLastPaste::default();
commands.trigger_targets(
WidgetPasteEvent {
target: current_focus.get(),
paste: smol_str::SmolStr::new(text),
},
current_focus.get(),
);
return;
}
#[cfg(target_arch = "wasm32")]
{
let Some(clipboard) =
web_sys::window().and_then(|window| Some(window.navigator().clipboard()))
else {
warn!("no clipboard");
return;
};
let promise = clipboard.read_text();
let future = wasm_bindgen_futures::JsFuture::from(promise);
let (sender, receiver) = futures_channel::oneshot::channel::<String>();
let pool = bevy::tasks::TaskPool::new();
pool.spawn(async move {
let Ok(text) = future.await else {
return;
};
let Some(text) = text.as_string() else {
return;
};
let _ = sender.send(text);
});
commands.spawn(WidgetPasteEventWasm {
target: current_focus.get(),
receiver,
});
return;
}
}
match &event.logical_key {
Key::Character(c) => {
commands.trigger_targets(
WidgetKeyboardCharEvent {
target: current_focus.get(),
c: c.clone(),
},
current_focus.get(),
);
}
Key::Space => {
commands.trigger_targets(
WidgetKeyboardCharEvent {
target: current_focus.get(),
c: smol_str::SmolStr::new(" "),
},
current_focus.get(),
);
}
_ => {}
}
// Also send a button event.
commands.trigger_targets(
WidgetKeyboardButtonEvent {
target: current_focus.get(),
code: event.key_code,
},
current_focus.get(),
);
}
}
}