egui_hooks 0.11.0

React Hooks like API for egui
Documentation 
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use crate::deps::Deps;

use super::Hook;

pub struct EffectHook<F> {
    pub callback: F,
}

impl<F: FnOnce() + Send + Sync, D: Deps> Hook<D> for EffectHook<F> {
    type Backend = bool;
    type Output = ();
    #[inline]
    fn init(
        &mut self,
        _index: usize,
        _deps: &D,
        _backend: Option<Self::Backend>,
        _ui: &mut egui::Ui,
    ) -> Self::Backend {
        true
    }
    #[inline]
    fn hook(self, backend: &mut Self::Backend, _ui: &mut egui::Ui) -> Self::Output {
        if *backend {
            (self.callback)();
            *backend = false;
        }
    }
}

pub struct EffectHookWithCleanup<F> {
    pub callback: F,
}