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dash-frontend: clock, wgui: refactoring, non-panicking casts

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Aleksander
2025-09-16 20:09:13 +02:00
parent 129785daa7
commit 0fdc0e3828
20 changed files with 287 additions and 165 deletions
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16
wgui/src/widget/mod.rs
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@@ -111,6 +111,10 @@ pub struct DrawParams<'a> {
}
pub trait WidgetObj: AnyTrait {
// every widget stores their of id for convenience reasons
fn get_id(&self) -> WidgetID;
fn set_id(&mut self, id: WidgetID); // always set at insertion
fn draw(&mut self, state: &mut DrawState, params: &DrawParams);
fn measure(
&mut self,
@@ -173,18 +177,14 @@ pub fn get_scrollbar_info(l: &taffy::Layout) -> Option<ScrollbarInfo> {
}
impl dyn WidgetObj {
// panics on failure
// TODO: panic-less alternative
pub fn get_as<T: 'static>(&self) -> &T {
pub fn get_as<T: 'static>(&self) -> Option<&T> {
let any = self.as_any();
any.downcast_ref::<T>().unwrap()
any.downcast_ref::<T>()
}
// panics on failure
// TODO: panic-less alternative
pub fn get_as_mut<T: 'static>(&mut self) -> &mut T {
pub fn get_as_mut<T: 'static>(&mut self) -> Option<&mut T> {
let any = self.as_any_mut();
any.downcast_mut::<T>().unwrap()
any.downcast_mut::<T>()
}
}