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use std::time::{SystemTime, UNIX_EPOCH};
use crate::core::callbacks::CallbackEvent;
use crate::widget::config::*;
use crate::widget::widget::*;
pub struct TimerWidget {
config: Configurable,
enabled: bool,
initiated: u64,
triggered: bool,
widget_id: i32,
on_tick: Option<Box<dyn FnMut(&mut TimerWidget)>>,
}
fn time_ms() -> u64 {
let since_the_epoch = SystemTime::now().duration_since(UNIX_EPOCH).unwrap();
(since_the_epoch.as_secs() * 1_000) + (since_the_epoch.subsec_nanos() / 1_000_000) as u64
}
impl TimerWidget {
pub fn new() -> Self {
Self {
config: Configurable::new(),
enabled: true,
initiated: time_ms(),
triggered: false,
widget_id: 0,
on_tick: None,
}
}
fn tick(&mut self) {
if !self.enabled {
return;
}
let elapsed = time_ms() - self.initiated;
if elapsed > self.config().get_numeric(CONFIG_TIMER_TIMEOUT) {
self.initiated = time_ms();
self.triggered = true;
}
}
pub fn on_tick<F>(&mut self, callback: F)
where
F: FnMut(&mut TimerWidget) + 'static,
{
self.on_tick = Some(Box::new(callback));
}
fn trigger_tick(&mut self) {
if let Some(mut cb) = self.on_tick.take() {
cb(self);
self.on_tick = Some(cb);
}
}
}
impl Drawable for TimerWidget {}
impl InjectableSystemEvents for TimerWidget {}
impl InjectableCustomEvents for TimerWidget {
fn inject_custom_event(&mut self, widget_id: i32) -> Option<CallbackEvent> {
if self.triggered {
self.triggered = false;
self.trigger_tick();
Some(CallbackEvent::TimerTriggered { widget_id })
} else {
None
}
}
}
impl Widget for TimerWidget {
fn config(&mut self) -> &mut Configurable {
&mut self.config
}
fn is_invalidated(&mut self) -> bool {
true
}
fn injects_custom_events(&mut self) -> bool {
true
}
fn set_widget_id(&mut self, widget_id: i32) {
self.widget_id = widget_id;
}
fn get_widget_id(&mut self) -> i32 {
self.widget_id
}
fn get_injectable_custom_events(&mut self) -> &mut dyn InjectableCustomEvents {
self
}
fn get_injectable_system_events(&mut self) -> &mut dyn InjectableSystemEvents {
self
}
fn get_drawable(&mut self) -> &mut dyn Drawable {
self
}
fn is_drawable(&mut self) -> bool {
self.tick();
false
}
}