Rename `overlay::Content` trait to `Overlay`

The `Overlay` struct is now `overlay::Element`.

native/src/element.rs

@@ -1,5 +1,5 @@
 use crate::{
-    layout, Clipboard, Color, Event, Hasher, Layout, Length, Overlay, Point,
+    layout, overlay, Clipboard, Color, Event, Hasher, Layout, Length, Point,
     Widget,
 };
 use std::rc::Rc;
@@ -276,7 +276,7 @@ where
     pub fn overlay<'b>(
         &'b mut self,
         layout: Layout<'_>,
-    ) -> Option<Overlay<'b, Message, Renderer>> {
+    ) -> Option<overlay::Element<'b, Message, Renderer>> {
         self.widget.overlay(layout)
     }
 }
@@ -366,7 +366,7 @@ where
     fn overlay(
         &mut self,
         layout: Layout<'_>,
-    ) -> Option<Overlay<'_, B, Renderer>> {
+    ) -> Option<overlay::Element<'_, B, Renderer>> {
         let mapper = self.mapper.clone();
 
         self.widget
@@ -452,7 +452,7 @@ where
     fn overlay(
         &mut self,
         layout: Layout<'_>,
-    ) -> Option<Overlay<'_, Message, Renderer>> {
+    ) -> Option<overlay::Element<'_, Message, Renderer>> {
         self.element.overlay(layout)
     }
 }

native/src/overlay.rs

@@ -1,101 +1,13 @@
-mod content;
+mod element;
 
 pub mod menu;
 
-pub use content::Content;
+pub use element::Element;
 pub use menu::Menu;
 
-use crate::{layout, Clipboard, Event, Hasher, Layout, Point, Size, Vector};
-use std::rc::Rc;
+use crate::{layout, Clipboard, Event, Hasher, Layout, Point, Size};
 
-#[allow(missing_debug_implementations)]
-pub struct Overlay<'a, Message, Renderer> {
-    position: Point,
-    content: Box<dyn Content<Message, Renderer> + 'a>,
-}
-
-impl<'a, Message, Renderer> Overlay<'a, Message, Renderer>
-where
-    Renderer: crate::Renderer,
-{
-    pub fn new(
-        position: Point,
-        content: Box<dyn Content<Message, Renderer> + 'a>,
-    ) -> Self {
-        Self { position, content }
-    }
-
-    pub fn translate(mut self, translation: Vector) -> Self {
-        self.position = self.position + translation;
-        self
-    }
-
-    pub fn map<B>(self, f: Rc<dyn Fn(Message) -> B>) -> Overlay<'a, B, Renderer>
-    where
-        Message: 'a,
-        Renderer: 'a,
-        B: 'static,
-    {
-        Overlay {
-            position: self.position,
-            content: Box::new(Map::new(self.content, f)),
-        }
-    }
-
-    pub fn layout(&self, renderer: &Renderer, bounds: Size) -> layout::Node {
-        self.content.layout(renderer, bounds, self.position)
-    }
-
-    pub fn draw(
-        &self,
-        renderer: &mut Renderer,
-        defaults: &Renderer::Defaults,
-        layout: Layout<'_>,
-        cursor_position: Point,
-    ) -> Renderer::Output {
-        self.content
-            .draw(renderer, defaults, layout, cursor_position)
-    }
-
-    pub fn hash_layout(&self, state: &mut Hasher) {
-        self.content.hash_layout(state, self.position);
-    }
-
-    pub fn on_event(
-        &mut self,
-        event: Event,
-        layout: Layout<'_>,
-        cursor_position: Point,
-        messages: &mut Vec<Message>,
-        renderer: &Renderer,
-        clipboard: Option<&dyn Clipboard>,
-    ) {
-        self.content.on_event(
-            event,
-            layout,
-            cursor_position,
-            messages,
-            renderer,
-            clipboard,
-        )
-    }
-}
-
-struct Map<'a, A, B, Renderer> {
-    content: Box<dyn Content<A, Renderer> + 'a>,
-    mapper: Rc<dyn Fn(A) -> B>,
-}
-
-impl<'a, A, B, Renderer> Map<'a, A, B, Renderer> {
-    pub fn new(
-        content: Box<dyn Content<A, Renderer> + 'a>,
-        mapper: Rc<dyn Fn(A) -> B + 'static>,
-    ) -> Map<'a, A, B, Renderer> {
-        Map { content, mapper }
-    }
-}
-
-impl<'a, A, B, Renderer> Content<B, Renderer> for Map<'a, A, B, Renderer>
+pub trait Overlay<Message, Renderer>
 where
     Renderer: crate::Renderer,
 {
@@ -104,34 +16,7 @@ where
         renderer: &Renderer,
         bounds: Size,
         position: Point,
-    ) -> layout::Node {
-        self.content.layout(renderer, bounds, position)
-    }
-
-    fn on_event(
-        &mut self,
-        event: Event,
-        layout: Layout<'_>,
-        cursor_position: Point,
-        messages: &mut Vec<B>,
-        renderer: &Renderer,
-        clipboard: Option<&dyn Clipboard>,
-    ) {
-        let mut original_messages = Vec::new();
-
-        self.content.on_event(
-            event,
-            layout,
-            cursor_position,
-            &mut original_messages,
-            renderer,
-            clipboard,
-        );
-
-        original_messages
-            .drain(..)
-            .for_each(|message| messages.push((self.mapper)(message)));
-    }
+    ) -> layout::Node;
 
     fn draw(
         &self,
@@ -139,12 +24,18 @@ where
         defaults: &Renderer::Defaults,
         layout: Layout<'_>,
         cursor_position: Point,
-    ) -> Renderer::Output {
-        self.content
-            .draw(renderer, defaults, layout, cursor_position)
-    }
+    ) -> Renderer::Output;
 
-    fn hash_layout(&self, state: &mut Hasher, position: Point) {
-        self.content.hash_layout(state, position);
+    fn hash_layout(&self, state: &mut Hasher, position: Point);
+
+    fn on_event(
+        &mut self,
+        _event: Event,
+        _layout: Layout<'_>,
+        _cursor_position: Point,
+        _messages: &mut Vec<Message>,
+        _renderer: &Renderer,
+        _clipboard: Option<&dyn Clipboard>,
+    ) {
     }
 }

native/src/overlay/content.rs

@@ -1,34 +0,0 @@
-use crate::{layout, Clipboard, Event, Hasher, Layout, Point, Size};
-
-pub trait Content<Message, Renderer>
-where
-    Renderer: crate::Renderer,
-{
-    fn layout(
-        &self,
-        renderer: &Renderer,
-        bounds: Size,
-        position: Point,
-    ) -> layout::Node;
-
-    fn draw(
-        &self,
-        renderer: &mut Renderer,
-        defaults: &Renderer::Defaults,
-        layout: Layout<'_>,
-        cursor_position: Point,
-    ) -> Renderer::Output;
-
-    fn hash_layout(&self, state: &mut Hasher, position: Point);
-
-    fn on_event(
-        &mut self,
-        _event: Event,
-        _layout: Layout<'_>,
-        _cursor_position: Point,
-        _messages: &mut Vec<Message>,
-        _renderer: &Renderer,
-        _clipboard: Option<&dyn Clipboard>,
-    ) {
-    }
-}

native/src/overlay/element.rs

@@ -0,0 +1,145 @@
+pub use crate::Overlay;
+
+use crate::{layout, Clipboard, Event, Hasher, Layout, Point, Size, Vector};
+use std::rc::Rc;
+
+#[allow(missing_debug_implementations)]
+pub struct Element<'a, Message, Renderer> {
+    position: Point,
+    overlay: Box<dyn Overlay<Message, Renderer> + 'a>,
+}
+
+impl<'a, Message, Renderer> Element<'a, Message, Renderer>
+where
+    Renderer: crate::Renderer,
+{
+    pub fn new(
+        position: Point,
+        overlay: Box<dyn Overlay<Message, Renderer> + 'a>,
+    ) -> Self {
+        Self { position, overlay }
+    }
+
+    pub fn translate(mut self, translation: Vector) -> Self {
+        self.position = self.position + translation;
+        self
+    }
+
+    pub fn map<B>(self, f: Rc<dyn Fn(Message) -> B>) -> Element<'a, B, Renderer>
+    where
+        Message: 'a,
+        Renderer: 'a,
+        B: 'static,
+    {
+        Element {
+            position: self.position,
+            overlay: Box::new(Map::new(self.overlay, f)),
+        }
+    }
+
+    pub fn layout(&self, renderer: &Renderer, bounds: Size) -> layout::Node {
+        self.overlay.layout(renderer, bounds, self.position)
+    }
+
+    pub fn draw(
+        &self,
+        renderer: &mut Renderer,
+        defaults: &Renderer::Defaults,
+        layout: Layout<'_>,
+        cursor_position: Point,
+    ) -> Renderer::Output {
+        self.overlay
+            .draw(renderer, defaults, layout, cursor_position)
+    }
+
+    pub fn hash_layout(&self, state: &mut Hasher) {
+        self.overlay.hash_layout(state, self.position);
+    }
+
+    pub fn on_event(
+        &mut self,
+        event: Event,
+        layout: Layout<'_>,
+        cursor_position: Point,
+        messages: &mut Vec<Message>,
+        renderer: &Renderer,
+        clipboard: Option<&dyn Clipboard>,
+    ) {
+        self.overlay.on_event(
+            event,
+            layout,
+            cursor_position,
+            messages,
+            renderer,
+            clipboard,
+        )
+    }
+}
+
+struct Map<'a, A, B, Renderer> {
+    content: Box<dyn Overlay<A, Renderer> + 'a>,
+    mapper: Rc<dyn Fn(A) -> B>,
+}
+
+impl<'a, A, B, Renderer> Map<'a, A, B, Renderer> {
+    pub fn new(
+        content: Box<dyn Overlay<A, Renderer> + 'a>,
+        mapper: Rc<dyn Fn(A) -> B + 'static>,
+    ) -> Map<'a, A, B, Renderer> {
+        Map { content, mapper }
+    }
+}
+
+impl<'a, A, B, Renderer> Overlay<B, Renderer> for Map<'a, A, B, Renderer>
+where
+    Renderer: crate::Renderer,
+{
+    fn layout(
+        &self,
+        renderer: &Renderer,
+        bounds: Size,
+        position: Point,
+    ) -> layout::Node {
+        self.content.layout(renderer, bounds, position)
+    }
+
+    fn on_event(
+        &mut self,
+        event: Event,
+        layout: Layout<'_>,
+        cursor_position: Point,
+        messages: &mut Vec<B>,
+        renderer: &Renderer,
+        clipboard: Option<&dyn Clipboard>,
+    ) {
+        let mut original_messages = Vec::new();
+
+        self.content.on_event(
+            event,
+            layout,
+            cursor_position,
+            &mut original_messages,
+            renderer,
+            clipboard,
+        );
+
+        original_messages
+            .drain(..)
+            .for_each(|message| messages.push((self.mapper)(message)));
+    }
+
+    fn draw(
+        &self,
+        renderer: &mut Renderer,
+        defaults: &Renderer::Defaults,
+        layout: Layout<'_>,
+        cursor_position: Point,
+    ) -> Renderer::Output {
+        self.content
+            .draw(renderer, defaults, layout, cursor_position)
+    }
+
+    fn hash_layout(&self, state: &mut Hasher, position: Point) {
+        self.content.hash_layout(state, position);
+    }
+}

native/src/overlay/menu.rs

@@ -70,8 +70,8 @@ where
         self,
         position: Point,
         target_height: f32,
-    ) -> overlay::Overlay<'a, Message, Renderer> {
-        overlay::Overlay::new(
+    ) -> overlay::Element<'a, Message, Renderer> {
+        overlay::Element::new(
             position,
             Box::new(Overlay::new(self, target_height)),
         )
@@ -149,7 +149,7 @@ where
     }
 }
 
-impl<'a, Message, Renderer> overlay::Content<Message, Renderer>
+impl<'a, Message, Renderer> crate::Overlay<Message, Renderer>
     for Overlay<'a, Message, Renderer>
 where
     Renderer: self::Renderer,

native/src/user_interface.rs

@@ -1,4 +1,4 @@
-use crate::{layout, Clipboard, Element, Event, Layout, Overlay, Point, Size};
+use crate::{layout, overlay, Clipboard, Element, Event, Layout, Point, Size};
 
 use std::hash::Hasher;
 
@@ -398,7 +398,7 @@ where
     fn overlay_layer(
         cache: Option<Layer>,
         bounds: Size,
-        overlay: &mut Overlay<'_, Message, Renderer>,
+        overlay: &mut overlay::Element<'_, Message, Renderer>,
         renderer: &Renderer,
     ) -> Layer {
         let new_hash = {

native/src/widget.rs

@@ -70,7 +70,7 @@ pub use text::Text;
 #[doc(no_inline)]
 pub use text_input::TextInput;
 
-use crate::{layout, Clipboard, Event, Hasher, Layout, Length, Overlay, Point};
+use crate::{layout, overlay, Clipboard, Event, Hasher, Layout, Length, Point};
 
 /// A component that displays information and allows interaction.
 ///
@@ -182,7 +182,7 @@ where
     fn overlay<'b>(
         &'b mut self,
         _layout: Layout<'_>,
-    ) -> Option<Overlay<'b, Message, Renderer>> {
+    ) -> Option<overlay::Element<'b, Message, Renderer>> {
         None
     }
 }

native/src/widget/column.rs

@@ -2,7 +2,7 @@
 use std::hash::Hash;
 
 use crate::{
-    layout, Align, Clipboard, Element, Event, Hasher, Layout, Length, Overlay,
+    layout, overlay, Align, Clipboard, Element, Event, Hasher, Layout, Length,
     Point, Widget,
 };
 
@@ -208,7 +208,7 @@ where
     fn overlay(
         &mut self,
         layout: Layout<'_>,
-    ) -> Option<Overlay<'_, Message, Renderer>> {
+    ) -> Option<overlay::Element<'_, Message, Renderer>> {
         self.children
             .iter_mut()
             .zip(layout.children())

native/src/widget/combo_box.rs

@@ -1,8 +1,8 @@
 use crate::{
-    layout, mouse,
+    layout, mouse, overlay,
     overlay::menu::{self, Menu},
-    scrollable, text, Clipboard, Element, Event, Hasher, Layout, Length,
-    Overlay, Point, Rectangle, Size, Widget,
+    scrollable, text, Clipboard, Element, Event, Hasher, Layout, Length, Point,
+    Rectangle, Size, Widget,
 };
 use std::borrow::Cow;
 
@@ -225,7 +225,7 @@ where
     fn overlay(
         &mut self,
         layout: Layout<'_>,
-    ) -> Option<Overlay<'_, Message, Renderer>> {
+    ) -> Option<overlay::Element<'_, Message, Renderer>> {
         if self.menu.is_open() {
             let bounds = layout.bounds();
 

native/src/widget/container.rs

@@ -2,7 +2,7 @@
 use std::hash::Hash;
 
 use crate::{
-    layout, Align, Clipboard, Element, Event, Hasher, Layout, Length, Overlay,
+    layout, overlay, Align, Clipboard, Element, Event, Hasher, Layout, Length,
     Point, Rectangle, Widget,
 };
 
@@ -218,7 +218,7 @@ where
     fn overlay(
         &mut self,
         layout: Layout<'_>,
-    ) -> Option<Overlay<'_, Message, Renderer>> {
+    ) -> Option<overlay::Element<'_, Message, Renderer>> {
         self.content.overlay(layout.children().next().unwrap())
     }
 }

native/src/widget/row.rs

@@ -2,7 +2,7 @@
 use std::hash::Hash;
 
 use crate::{
-    layout, Align, Clipboard, Element, Event, Hasher, Layout, Length, Overlay,
+    layout, overlay, Align, Clipboard, Element, Event, Hasher, Layout, Length,
     Point, Widget,
 };
 
@@ -210,7 +210,7 @@ where
     fn overlay(
         &mut self,
         layout: Layout<'_>,
-    ) -> Option<Overlay<'_, Message, Renderer>> {
+    ) -> Option<overlay::Element<'_, Message, Renderer>> {
         self.children
             .iter_mut()
             .zip(layout.children())

native/src/widget/scrollable.rs

@@ -1,7 +1,7 @@
 //! Navigate an endless amount of content with a scrollbar.
 use crate::{
-    column, layout, mouse, Align, Clipboard, Column, Element, Event, Hasher,
-    Layout, Length, Overlay, Point, Rectangle, Size, Vector, Widget,
+    column, layout, mouse, overlay, Align, Clipboard, Column, Element, Event,
+    Hasher, Layout, Length, Point, Rectangle, Size, Vector, Widget,
 };
 
 use std::{f32, hash::Hash, u32};
@@ -319,7 +319,7 @@ where
     fn overlay(
         &mut self,
         layout: Layout<'_>,
-    ) -> Option<Overlay<'_, Message, Renderer>> {
+    ) -> Option<overlay::Element<'_, Message, Renderer>> {
         let Self { content, state, .. } = self;
 
         content