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use crate::direction::Direction;
use crate::event::{Event, EventResult, Key, MouseButton, MouseEvent};
use crate::theme::ColorStyle;
use crate::view::View;
use crate::Cursive;
use crate::Printer;
use crate::Vec2;
use crate::With;
use std::rc::Rc;
pub struct Checkbox {
checked: bool,
enabled: bool,
on_change: Option<Rc<dyn Fn(&mut Cursive, bool)>>,
}
new_default!(Checkbox);
impl Checkbox {
impl_enabled!(self.enabled);
pub fn new() -> Self {
Checkbox {
checked: false,
enabled: true,
on_change: None,
}
}
pub fn set_on_change<F: 'static + Fn(&mut Cursive, bool)>(
&mut self,
on_change: F,
) {
self.on_change = Some(Rc::new(on_change));
}
pub fn on_change<F: 'static + Fn(&mut Cursive, bool)>(
self,
on_change: F,
) -> Self {
self.with(|s| s.set_on_change(on_change))
}
pub fn toggle(&mut self) -> EventResult {
let checked = !self.checked;
self.set_checked(checked)
}
pub fn check(&mut self) -> EventResult {
self.set_checked(true)
}
pub fn checked(self) -> Self {
self.with(|s| {
s.check();
})
}
pub fn is_checked(&self) -> bool {
self.checked
}
pub fn uncheck(&mut self) -> EventResult {
self.set_checked(false)
}
pub fn unchecked(self) -> Self {
self.with(|s| {
s.uncheck();
})
}
pub fn set_checked(&mut self, checked: bool) -> EventResult {
self.checked = checked;
if let Some(ref on_change) = self.on_change {
let on_change = Rc::clone(on_change);
EventResult::with_cb(move |s| on_change(s, checked))
} else {
EventResult::Consumed(None)
}
}
pub fn with_checked(self, is_checked: bool) -> Self {
self.with(|s| {
s.set_checked(is_checked);
})
}
fn draw_internal(&self, printer: &Printer) {
printer.print((0, 0), "[ ]");
if self.checked {
printer.print((1, 0), "X");
}
}
}
impl View for Checkbox {
fn required_size(&mut self, _: Vec2) -> Vec2 {
Vec2::new(3, 1)
}
fn take_focus(&mut self, _: Direction) -> bool {
self.enabled
}
fn draw(&self, printer: &Printer) {
if self.enabled && printer.enabled {
printer.with_selection(printer.focused, |printer| {
self.draw_internal(printer)
});
} else {
printer.with_color(ColorStyle::secondary(), |printer| {
self.draw_internal(printer)
});
}
}
fn on_event(&mut self, event: Event) -> EventResult {
if !self.enabled {
return EventResult::Ignored;
}
match event {
Event::Key(Key::Enter) | Event::Char(' ') => self.toggle(),
Event::Mouse {
event: MouseEvent::Release(MouseButton::Left),
position,
offset,
} if position.fits_in_rect(offset, (3, 1)) => self.toggle(),
_ => EventResult::Ignored,
}
}
}