Jonathan Kelley
4f1d039bad
* clear away prelude on dioxus * clippy * wip - drop prelude from dioxus-html * docs clippy * wip * more fixe * delete all preludes * doc... * better export * merge some imports * fewer global imports * global incremental renderer * fix cargo doc
19 lines
733 B
Rust
19 lines
733 B
Rust
use dioxus_core::{use_after_render, use_before_render, use_hook};
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use dioxus_signals::{CopyValue, Writable};
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/// A hook that uses before/after lifecycle hooks to determine if the hook was run
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#[doc = include_str!("../docs/rules_of_hooks.md")]
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#[doc = include_str!("../docs/moving_state_around.md")]
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pub fn use_hook_did_run(mut handler: impl FnMut(bool) + 'static) {
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let mut did_run_ = use_hook(|| CopyValue::new(false));
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// Before render always set the value to false
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use_before_render(move || did_run_.set(false));
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// Only when this hook is hit do we want to set the value to true
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did_run_.set(true);
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// After render, we can check if the hook was run
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use_after_render(move || handler(did_run_()));
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}
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