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use crate::element::{self, Element};
use crate::Widget;
pub struct Button<Message, Renderer> {
content: Element<Message, Renderer>,
on_press: Option<Message>,
}
impl<Message, Renderer> Button<Message, Renderer> {
pub fn new(
content: impl element::Descriptor<Message, Renderer> + 'static,
) -> Self {
Button {
content: Element::new(content),
on_press: None,
}
}
pub fn on_press(mut self, on_press: Message) -> Self {
self.on_press = Some(on_press);
self
}
}
impl<Message, Renderer> element::Descriptor<Message, Renderer>
for Button<Message, Renderer>
where
Message: 'static + Clone,
Renderer: 'static,
{
fn tag(&self) -> std::any::TypeId {
std::any::TypeId::of::<Self>()
}
fn build(&self) -> Box<dyn Widget<Message, Renderer>> {
Box::new(State { is_pressed: false })
}
fn children(&self) -> &[Element<Message, Renderer>] {
std::slice::from_ref(&self.content)
}
fn clone(&self) -> Box<dyn element::Descriptor<Message, Renderer>> {
Box::new(Clone::clone(self))
}
}
impl<Message, Renderer> Clone for Button<Message, Renderer>
where
Message: Clone,
{
fn clone(&self) -> Self {
Self {
content: self.content.clone(),
on_press: self.on_press.clone(),
}
}
}
pub struct State {
is_pressed: bool,
}
impl<Message, Renderer> Widget<Message, Renderer> for State {}
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