Merge pull request #2289 from JL710/Component-doc

feature doc to Component trait

widget/src/lazy.rs

@@ -29,6 +29,7 @@ use std::hash::{Hash, Hasher as H};
 use std::rc::Rc;
 
 /// A widget that only rebuilds its contents when necessary.
+#[cfg(feature = "lazy")]
 #[allow(missing_debug_implementations)]
 pub struct Lazy<'a, Message, Theme, Renderer, Dependency, View> {
     dependency: Dependency,

widget/src/lazy/component.rs

@@ -30,6 +30,7 @@ use std::rc::Rc;
 ///
 /// Additionally, a [`Component`] is capable of producing a `Message` to notify
 /// the parent application of any relevant interactions.
+#[cfg(feature = "lazy")]
 pub trait Component<Message, Theme = crate::Theme, Renderer = crate::Renderer> {
     /// The internal state of this [`Component`].
     type State: Default;

widget/src/lazy/helpers.rs

@@ -1,9 +1,10 @@
 use crate::core::{self, Element, Size};
-use crate::lazy::component::{self, Component};
+use crate::lazy::component;
-use crate::lazy::{Lazy, Responsive};
 
 use std::hash::Hash;
 
+pub use crate::lazy::{Component, Lazy, Responsive};
+
 /// Creates a new [`Lazy`] widget with the given data `Dependency` and a
 /// closure that can turn this data into a widget tree.
 #[cfg(feature = "lazy")]

widget/src/lazy/responsive.rs

@@ -21,6 +21,7 @@ use std::ops::Deref;
 ///
 /// A [`Responsive`] widget will always try to fill all the available space of
 /// its parent.
+#[cfg(feature = "lazy")]
 #[allow(missing_debug_implementations)]
 pub struct Responsive<
     'a,

widget/src/lib.rs

@@ -42,9 +42,6 @@ pub use helpers::*;
 #[cfg(feature = "lazy")]
 mod lazy;
 
-#[cfg(feature = "lazy")]
-pub use crate::lazy::{Component, Lazy, Responsive};
-
 #[cfg(feature = "lazy")]
 pub use crate::lazy::helpers::*;