20 lines
696 B
Rust
20 lines
696 B
Rust
use dioxus_core::ScopeState;
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/// Consume some context in the tree, providing a sharable handle to the value
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///
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/// Does not regenerate the value if the value is changed at the parent.
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pub fn use_context<T: 'static + Clone>(cx: &ScopeState) -> Option<&T> {
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cx.use_hook(|| cx.consume_context::<T>()).as_ref()
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}
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/// Provide some context via the tree and return a reference to it
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///
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/// Once the context has been provided, it is immutable. Mutations should be done via interior mutability.
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pub fn use_context_provider<T: 'static + Clone>(cx: &ScopeState, f: impl FnOnce() -> T) -> &T {
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cx.use_hook(|| {
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let val = f();
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cx.provide_context(val.clone());
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val
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})
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}
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