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Document how the state of a Component can be managed

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dtoniolo 2024-08-23 15:14:12 +02:00 • committed by Héctor Ramón Jiménez
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widget/src/lazy/component.rs
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@ -31,6 +31,19 @@ use std::rc::Rc;
///
/// Additionally, a [`Component`] is capable of producing a `Message` to notify
/// the parent application of any relevant interactions.
///
/// # State
/// A component can store its state in one of two ways: either as data within the
/// implementor of the trait, or in a type [`State`][Component::State] that is managed
/// by the runtime and provided to the trait methods. These two approaches are not
/// mutually exclusive and have opposite pros and cons.
///
/// For instance, if a piece of state is needed by multiple components that reside
/// in different branches of the tree, then it's more convenient to let a common
/// ancestor store it and pass it down.
///
/// On the other hand, if a piece of state is only needed by the component itself,
/// you can store it as part of its internal [`State`][Component::State].
#[cfg(feature = "lazy")]
#[deprecated(
since = "0.13.0",