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use std::fmt::{self, Debug};
use std::rc::Rc;
use super::AccelLabel;
use kas::class::HasBool;
use kas::prelude::*;
#[widget(config(key_nav = true))]
#[handler(handle=noauto)]
#[derive(Clone, Default, Widget)]
pub struct CheckBoxBare<M: 'static> {
#[widget_core]
core: CoreData,
state: bool,
on_toggle: Option<Rc<dyn Fn(bool) -> M>>,
}
impl<M: 'static> Debug for CheckBoxBare<M> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(
f,
"CheckBoxBare {{ core: {:?}, state: {:?}, ... }}",
self.core, self.state
)
}
}
impl<M: 'static> Layout for CheckBoxBare<M> {
fn size_rules(&mut self, size_handle: &mut dyn SizeHandle, axis: AxisInfo) -> SizeRules {
let size = size_handle.checkbox();
self.core.rect.size = size;
let margins = size_handle.outer_margins();
SizeRules::extract_fixed(axis.is_vertical(), size, margins)
}
fn set_rect(&mut self, rect: Rect, align: AlignHints) {
let rect = align
.complete(Align::Centre, Align::Centre, self.rect().size)
.apply(rect);
self.core.rect = rect;
}
fn draw(&self, draw_handle: &mut dyn DrawHandle, mgr: &event::ManagerState, disabled: bool) {
draw_handle.checkbox(self.core.rect, self.state, self.input_state(mgr, disabled));
}
}
impl<M: 'static> CheckBoxBare<M> {
#[inline]
pub fn new_on<F: Fn(bool) -> M + 'static>(f: F) -> Self {
CheckBoxBare {
core: Default::default(),
state: false,
on_toggle: Some(Rc::new(f)),
}
}
}
impl CheckBoxBare<VoidMsg> {
#[inline]
pub fn new() -> Self {
CheckBoxBare {
core: Default::default(),
state: false,
on_toggle: None,
}
}
#[inline]
pub fn on_toggle<M, F>(self, f: F) -> CheckBoxBare<M>
where
F: Fn(bool) -> M + 'static,
{
CheckBoxBare {
core: self.core,
state: self.state,
on_toggle: Some(Rc::new(f)),
}
}
}
impl<M: 'static> CheckBoxBare<M> {
#[inline]
pub fn state(mut self, state: bool) -> Self {
self.state = state;
self
}
}
impl<M: 'static> HasBool for CheckBoxBare<M> {
fn get_bool(&self) -> bool {
self.state
}
fn set_bool(&mut self, state: bool) -> TkAction {
self.state = state;
TkAction::Redraw
}
}
impl<M: 'static> event::Handler for CheckBoxBare<M> {
type Msg = M;
#[inline]
fn activation_via_press(&self) -> bool {
true
}
fn handle(&mut self, mgr: &mut Manager, event: Event) -> Response<M> {
match event {
Event::Activate => {
self.state = !self.state;
mgr.redraw(self.id());
if let Some(ref f) = self.on_toggle {
f(self.state).into()
} else {
Response::None
}
}
event => Response::Unhandled(event),
}
}
}
#[layout(row, area=checkbox)]
#[handler(msg = M, generics = <> where M: From<VoidMsg>)]
#[widget(config=noauto)]
#[derive(Clone, Default, Widget)]
pub struct CheckBox<M: 'static> {
#[widget_core]
core: CoreData,
#[layout_data]
layout_data: <Self as kas::LayoutData>::Data,
#[widget]
checkbox: CheckBoxBare<M>,
#[widget]
label: AccelLabel,
}
impl<M: 'static> Debug for CheckBox<M> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(
f,
"CheckBox {{ core: {:?}, layout_data: {:?}, checkbox: {:?}, label: {:?} }}",
self.core, self.layout_data, self.checkbox, self.label,
)
}
}
impl<M: 'static> CheckBox<M> {
#[inline]
pub fn new_on<T: Into<AccelString>, F>(f: F, label: T) -> Self
where
F: Fn(bool) -> M + 'static,
{
CheckBox {
core: Default::default(),
layout_data: Default::default(),
checkbox: CheckBoxBare::new_on(f),
label: AccelLabel::new(label),
}
}
}
impl CheckBox<VoidMsg> {
#[inline]
pub fn new<T: Into<AccelString>>(label: T) -> Self {
CheckBox {
core: Default::default(),
layout_data: Default::default(),
checkbox: CheckBoxBare::new(),
label: AccelLabel::new(label),
}
}
#[inline]
pub fn on_toggle<M, F>(self, f: F) -> CheckBox<M>
where
F: Fn(bool) -> M + 'static,
{
CheckBox {
core: self.core,
layout_data: self.layout_data,
checkbox: self.checkbox.on_toggle(f),
label: self.label,
}
}
}
impl<M: 'static> CheckBox<M> {
#[inline]
pub fn state(mut self, state: bool) -> Self {
self.checkbox = self.checkbox.state(state);
self
}
}
impl<M: 'static> WidgetConfig for CheckBox<M> {
fn configure(&mut self, mgr: &mut Manager) {
mgr.add_accel_keys(self.checkbox.id(), self.label.keys());
}
}
impl<M: 'static> HasBool for CheckBox<M> {
#[inline]
fn get_bool(&self) -> bool {
self.checkbox.get_bool()
}
#[inline]
fn set_bool(&mut self, state: bool) -> TkAction {
self.checkbox.set_bool(state)
}
}