Reintroduce Box for style_sheet in Scrollable

examples/scrollable/src/main.rs

@@ -95,7 +95,7 @@ impl Sandbox for ScrollableDemo {
                             .on_scroll(move |offset| {
                                 Message::Scrolled(i, offset)
                             })
-                            .style(theme.clone().into())
+                            .style(*theme)
                             .push(Text::new(variant.title))
                             .push(
                                 Button::new(

examples/scrollable/src/style.rs

@@ -34,11 +34,11 @@ impl<'a> From<Theme> for Box<dyn radio::StyleSheet + 'a> {
     }
 }
 
-impl From<Theme> for &'static dyn scrollable::StyleSheet {
+impl<'a> From<Theme> for Box<dyn scrollable::StyleSheet + 'a> {
     fn from(theme: Theme) -> Self {
         match theme {
             Theme::Light => Default::default(),
-            Theme::Dark => &dark::Scrollable,
+            Theme::Dark => dark::Scrollable.into(),
         }
     }
 }

examples/styling/src/main.rs

@@ -98,7 +98,7 @@ impl Sandbox for Styling {
         let scrollable = Scrollable::new(&mut self.scroll)
             .width(Length::Fill)
             .height(Length::Units(100))
-            .style(self.theme.into())
+            .style(self.theme)
             .push(Text::new("Scroll me!"))
             .push(Space::with_height(Length::Units(800)))
             .push(Text::new("You did it!"));
@@ -212,11 +212,11 @@ mod style {
         }
     }
 
-    impl From<Theme> for &'static dyn scrollable::StyleSheet {
+    impl<'a> From<Theme> for Box<dyn scrollable::StyleSheet + 'a> {
         fn from(theme: Theme) -> Self {
             match theme {
                 Theme::Light => Default::default(),
-                Theme::Dark => &dark::Scrollable,
+                Theme::Dark => dark::Scrollable.into(),
             }
         }
     }

native/src/widget/scrollable.rs

@@ -27,7 +27,7 @@ pub struct Scrollable<'a, Message, Renderer> {
     scroller_width: u16,
     content: Column<'a, Message, Renderer>,
     on_scroll: Option<Box<dyn Fn(f32) -> Message>>,
-    style_sheet: &'a dyn StyleSheet,
+    style_sheet: Box<dyn StyleSheet + 'a>,
 }
 
 impl<'a, Message, Renderer: crate::Renderer> Scrollable<'a, Message, Renderer> {
@@ -123,8 +123,11 @@ impl<'a, Message, Renderer: crate::Renderer> Scrollable<'a, Message, Renderer> {
     }
 
     /// Sets the style of the [`Scrollable`] .
-    pub fn style(mut self, style_sheet: &'a dyn StyleSheet) -> Self {
-        self.style_sheet = style_sheet;
+    pub fn style(
+        mut self,
+        style_sheet: impl Into<Box<dyn StyleSheet + 'a>>,
+    ) -> Self {
+        self.style_sheet = style_sheet.into();
         self
     }
 

style/src/scrollable.rs

@@ -60,8 +60,17 @@ impl StyleSheet for Default {
     }
 }
 
-impl std::default::Default for &'static dyn StyleSheet {
+impl std::default::Default for Box<dyn StyleSheet> {
     fn default() -> Self {
-        &Default
+        Box::new(Default)
+    }
+}
+
+impl<'a, T> From<T> for Box<dyn StyleSheet + 'a>
+where
+    T: StyleSheet + 'a,
+{
+    fn from(style_sheet: T) -> Self {
+        Box::new(style_sheet)
     }
 }

web/src/widget/scrollable.rs

@@ -14,7 +14,7 @@ pub struct Scrollable<'a, Message> {
     max_height: u32,
     content: Column<'a, Message>,
     #[allow(dead_code)]
-    style_sheet: &'a dyn StyleSheet,
+    style_sheet: Box<dyn StyleSheet + 'a>,
 }
 
 impl<'a, Message> Scrollable<'a, Message> {
@@ -78,11 +78,11 @@ impl<'a, Message> Scrollable<'a, Message> {
     }
 
     /// Sets the style of the [`Scrollable`] .
-    pub fn style<'b>(mut self, style_sheet: &'b dyn StyleSheet) -> Self
-    where
-        'b: 'a,
-    {
-        self.style_sheet = style_sheet;
+    pub fn style(
+        mut self,
+        style_sheet: impl Into<Box<dyn StyleSheet + 'a>>,
+    ) -> Self {
+        self.style_sheet = style_sheet.into();
         self
     }