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Remove fn as_any as it is no longer needed

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This commit is contained in:
Emil Ernerfeldt
2026-01-05 14:16:57 +01:00
parent f8e763378a
commit faccc12c09
3 changed files with 1 additions and 34 deletions
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23
crates/eframe/src/epi.rs
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@@ -6,9 +6,6 @@
#![warn(missing_docs)] // Let's keep `epi` well-documented. #![warn(missing_docs)] // Let's keep `epi` well-documented.
#[cfg(target_arch = "wasm32")]
use std::any::Any;
#[cfg(not(target_arch = "wasm32"))] #[cfg(not(target_arch = "wasm32"))]
#[cfg(any(feature = "glow", feature = "wgpu_no_default_features"))] #[cfg(any(feature = "glow", feature = "wgpu_no_default_features"))]
pub use crate::native::winit_integration::UserEvent; pub use crate::native::winit_integration::UserEvent;
@@ -176,26 +173,6 @@ pub trait App {
_ = (ctx, frame); _ = (ctx, frame);
} }
/// Get a handle to the app.
///
/// Can be used from web to interact or other external context.
///
/// You need to implement this if you want to be able to access the application from JS using [`crate::WebRunner::app_mut`].
///
/// This is needed because downcasting `Box<dyn App>` -> `Box<dyn Any>` to get &`ConcreteApp` is not simple in current rust.
///
/// Just copy-paste this as your implementation:
/// ```ignore
/// #[cfg(target_arch = "wasm32")]
/// fn as_any_mut(&mut self) -> Option<&mut dyn std::any::Any> {
/// Some(&mut *self)
/// }
/// ```
#[cfg(target_arch = "wasm32")]
fn as_any_mut(&mut self) -> Option<&mut dyn Any> {
None
}
/// Called on shutdown, and perhaps at regular intervals. Allows you to save state. /// Called on shutdown, and perhaps at regular intervals. Allows you to save state.
/// ///
/// Only called when the "persistence" feature is enabled. /// Only called when the "persistence" feature is enabled.

4
crates/eframe/src/web/app_runner.rs
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@@ -184,9 +184,7 @@ impl AppRunner {
/// ///
/// This will panic if your app does not implement [`App::as_any_mut`]. /// This will panic if your app does not implement [`App::as_any_mut`].
pub fn app_mut<ConcreteApp: 'static + App>(&mut self) -> &mut ConcreteApp { pub fn app_mut<ConcreteApp: 'static + App>(&mut self) -> &mut ConcreteApp {
self.app (self.app.as_mut() as &mut dyn std::any::Any)
.as_any_mut()
.expect("Your app must implement `as_any_mut`, but it doesn't")
.downcast_mut::<ConcreteApp>() .downcast_mut::<ConcreteApp>()
.expect("app_mut got the wrong type of App") .expect("app_mut got the wrong type of App")
} }

8
crates/egui_demo_app/src/wrap_app.rs
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@@ -3,9 +3,6 @@ use egui_demo_lib::{DemoWindows, is_mobile};
#[cfg(feature = "glow")] #[cfg(feature = "glow")]
use eframe::glow; use eframe::glow;
#[cfg(target_arch = "wasm32")]
use core::any::Any;
use crate::DemoApp; use crate::DemoApp;
#[derive(Default)] #[derive(Default)]
@@ -323,11 +320,6 @@ impl eframe::App for WrapApp {
custom3d.on_exit(gl); custom3d.on_exit(gl);
} }
} }
#[cfg(target_arch = "wasm32")]
fn as_any_mut(&mut self) -> Option<&mut dyn Any> {
Some(&mut *self)
}
} }
impl WrapApp { impl WrapApp {