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use cgmath::Point2;
use std::{
cell::RefCell,
default::default,
fmt::{Debug, Formatter, Result},
rc::Rc,
};
use stretch::{node::Node, style};
use crate::prelude::Singleton;
use crate::{
foundation::Signal,
material::LinearProgressIndicator,
rendering::backend::{WidgetRenderFactory, WidgetRenderHolder},
services::LayoutSystem,
};
use super::{Element, WidgetComponent};
#[derive(Debug, Clone)]
pub struct LinearProgressIndicatorStateChangeEvent {
value: bool,
prev: bool,
}
pub struct LinearProgressIndicatorElement {
component: Rc<RefCell<WidgetComponent>>,
state: bool,
pub onchange: Signal<LinearProgressIndicatorStateChangeEvent>,
pub renderer: Option<Rc<WidgetRenderHolder<Self>>>,
pub node: Node,
}
impl Debug for LinearProgressIndicatorElement {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
f.debug_struct("LinearProgressIndicatorElement").finish()
}
}
impl LinearProgressIndicatorElement {
pub fn new(widget: &LinearProgressIndicator) -> Self {
let node = LayoutSystem::new_node(style::Style { ..default() }, vec![]).unwrap();
let component = WidgetComponent::get(widget.key.id());
let state = true;
let instance = Self {
component,
onchange: Signal::new(),
state,
renderer: WidgetRenderFactory::global().get::<Self>(),
node,
};
instance
}
pub fn onclick<T>(&mut self, _: T, _: T) {
self.state = !self.state;
}
pub fn state(&self) -> bool {
self.state
}
pub fn set_state(&mut self, value: bool) {
let prev = self.state;
self.state = value;
self.onchange
.emit(&LinearProgressIndicatorStateChangeEvent { value, prev });
}
}
impl AsRef<RefCell<WidgetComponent>> for LinearProgressIndicatorElement {
fn as_ref(&self) -> &RefCell<WidgetComponent> {
self.component.as_ref()
}
}
impl Element for LinearProgressIndicatorElement {
fn destroy(&self) {
self.onchange.clear();
}
fn node(&self) -> Option<Node> {
Some(self.node)
}
fn relayout(&self, origin: Point2<f32>) {
let update_childs = match LayoutSystem::layout(self.node) {
Ok(layout) => {
let mut comp = self.as_ref().borrow_mut();
comp.x = layout.location.x + origin.x;
comp.y = layout.location.y + origin.y;
comp.w = layout.size.width;
comp.h = layout.size.height;
true
}
Err(e) => {
log::error!("{}", e);
false
}
};
if update_childs {
}
}
}