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use crate::theme::use_theme;
use kael::{prelude::FluentBuilder as _, *};
use std::rc::Rc;
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
pub enum NumberInputSize {
Sm,
Md,
Lg,
}
pub struct NumberInputState {
value: f64,
min: Option<f64>,
max: Option<f64>,
step: f64,
precision: usize,
focus_handle: FocusHandle,
}
impl NumberInputState {
pub fn new(cx: &mut Context<Self>) -> Self {
Self {
value: 0.0,
min: None,
max: None,
step: 1.0,
precision: 0,
focus_handle: cx.focus_handle(),
}
}
pub fn with_value(cx: &mut Context<Self>, value: f64) -> Self {
Self {
value,
min: None,
max: None,
step: 1.0,
precision: 0,
focus_handle: cx.focus_handle(),
}
}
pub fn value(&self) -> f64 {
self.value
}
pub fn set_value(&mut self, value: f64, cx: &mut Context<Self>) {
self.value = self.clamp_value(value);
cx.notify();
}
pub fn set_min(&mut self, min: Option<f64>, cx: &mut Context<Self>) {
self.min = min;
self.value = self.clamp_value(self.value);
cx.notify();
}
pub fn set_max(&mut self, max: Option<f64>, cx: &mut Context<Self>) {
self.max = max;
self.value = self.clamp_value(self.value);
cx.notify();
}
pub fn set_step(&mut self, step: f64) {
self.step = step.max(0.001);
}
pub fn set_precision(&mut self, precision: usize) {
self.precision = precision;
}
pub fn increment(&mut self, cx: &mut Context<Self>) {
self.set_value(self.value + self.step, cx);
}
pub fn decrement(&mut self, cx: &mut Context<Self>) {
self.set_value(self.value - self.step, cx);
}
pub fn can_increment(&self) -> bool {
self.max.is_none_or(|max| self.value < max)
}
pub fn can_decrement(&self) -> bool {
self.min.is_none_or(|min| self.value > min)
}
fn clamp_value(&self, value: f64) -> f64 {
let mut v = value;
if let Some(min) = self.min {
v = v.max(min);
}
if let Some(max) = self.max {
v = v.min(max);
}
v
}
fn format_value(&self) -> String {
if self.precision == 0 {
format!("{}", self.value as i64)
} else {
format!("{:.prec$}", self.value, prec = self.precision)
}
}
}
impl Focusable for NumberInputState {
fn focus_handle(&self, _: &App) -> FocusHandle {
self.focus_handle.clone()
}
}
impl Render for NumberInputState {
fn render(&mut self, _: &mut Window, _: &mut Context<Self>) -> impl IntoElement {
div()
}
}
#[derive(IntoElement)]
pub struct NumberInput {
state: Entity<NumberInputState>,
size: NumberInputSize,
placeholder: Option<SharedString>,
disabled: bool,
show_buttons: bool,
on_change: Option<Rc<dyn Fn(f64, &mut Window, &mut App)>>,
style: StyleRefinement,
}
impl NumberInput {
pub fn new(state: Entity<NumberInputState>) -> Self {
Self {
state,
size: NumberInputSize::Md,
placeholder: None,
disabled: false,
show_buttons: true,
on_change: None,
style: StyleRefinement::default(),
}
}
pub fn size(mut self, size: NumberInputSize) -> Self {
self.size = size;
self
}
pub fn placeholder(mut self, placeholder: impl Into<SharedString>) -> Self {
self.placeholder = Some(placeholder.into());
self
}
pub fn disabled(mut self, disabled: bool) -> Self {
self.disabled = disabled;
self
}
pub fn show_buttons(mut self, show: bool) -> Self {
self.show_buttons = show;
self
}
pub fn on_change(mut self, handler: impl Fn(f64, &mut Window, &mut App) + 'static) -> Self {
self.on_change = Some(Rc::new(handler));
self
}
}
impl Styled for NumberInput {
fn style(&mut self) -> &mut StyleRefinement {
&mut self.style
}
}
impl RenderOnce for NumberInput {
fn render(self, window: &mut Window, cx: &mut App) -> impl IntoElement {
let theme = use_theme();
let user_style = self.style;
let state_data = self.state.read(cx);
let value_text = state_data.format_value();
let can_increment = state_data.can_increment();
let can_decrement = state_data.can_decrement();
let focus_handle = state_data.focus_handle(cx);
let is_focused = focus_handle.is_focused(window);
let state = self.state.clone();
let (height, padding_x, text_size, button_size) = match self.size {
NumberInputSize::Sm => (px(32.0), px(8.0), px(13.0), px(24.0)),
NumberInputSize::Md => (px(40.0), px(12.0), px(14.0), px(32.0)),
NumberInputSize::Lg => (px(48.0), px(14.0), px(16.0), px(40.0)),
};
div()
.flex()
.items_center()
.map(|mut this| {
this.style().refine(&user_style);
this
})
.child(
div()
.flex()
.items_center()
.h(height)
.bg(theme.tokens.background)
.border_1()
.border_color(if is_focused {
theme.tokens.ring
} else {
theme.tokens.input
})
.rounded(theme.tokens.radius_md)
.when(self.disabled, |d| d.opacity(0.5))
.when(self.show_buttons, {
let state = state.clone();
let on_change = self.on_change.clone();
let disabled = self.disabled;
move |d| {
d.child(
div()
.id("decrement")
.flex()
.items_center()
.justify_center()
.w(button_size)
.h_full()
.border_r_1()
.border_color(theme.tokens.border)
.text_color(if can_decrement && !disabled {
theme.tokens.foreground
} else {
theme.tokens.muted_foreground
})
.when(can_decrement && !disabled, |d| {
d.cursor_pointer()
.hover(|s| s.bg(theme.tokens.accent.opacity(0.5)))
})
.when(can_decrement && !disabled, {
let state = state.clone();
let on_change = on_change.clone();
move |d| {
d.on_click(move |_, window, cx| {
state.update(cx, |s, cx| {
s.decrement(cx);
if let Some(ref handler) = on_change {
handler(s.value, window, cx);
}
});
})
}
})
.child(
div()
.text_size(px(18.0))
.font_weight(FontWeight::MEDIUM)
.child("−"),
),
)
}
})
.child(
div()
.flex_1()
.flex()
.items_center()
.justify_center()
.px(padding_x)
.h_full()
.min_w(px(60.0))
.text_size(text_size)
.text_color(theme.tokens.foreground)
.font_family(theme.tokens.font_family.clone())
.child(value_text),
)
.when(self.show_buttons, {
let state = state.clone();
let on_change = self.on_change.clone();
let disabled = self.disabled;
move |d| {
d.child(
div()
.id("increment")
.flex()
.items_center()
.justify_center()
.w(button_size)
.h_full()
.border_l_1()
.border_color(theme.tokens.border)
.text_color(if can_increment && !disabled {
theme.tokens.foreground
} else {
theme.tokens.muted_foreground
})
.when(can_increment && !disabled, |d| {
d.cursor_pointer()
.hover(|s| s.bg(theme.tokens.accent.opacity(0.5)))
})
.when(can_increment && !disabled, {
let state = state.clone();
let on_change = on_change.clone();
move |d| {
d.on_click(move |_, window, cx| {
state.update(cx, |s, cx| {
s.increment(cx);
if let Some(ref handler) = on_change {
handler(s.value, window, cx);
}
});
})
}
})
.child(
div()
.text_size(px(18.0))
.font_weight(FontWeight::MEDIUM)
.child("+"),
),
)
}
}),
)
}
}