Reintroduce Box for style_sheet in Checkbox

examples/styling/src/main.rs

@@ -108,7 +108,7 @@ impl Sandbox for Styling {
             "Check me!",
             Message::CheckboxToggled,
         )
-        .style(self.theme.into());
+        .style(self.theme);
 
         let toggler = Toggler::new(
             self.toggler_value,
@@ -239,11 +239,11 @@ mod style {
         }
     }
 
-    impl From<Theme> for &'static dyn checkbox::StyleSheet {
+    impl<'a> From<Theme> for Box<dyn checkbox::StyleSheet + 'a> {
         fn from(theme: Theme) -> Self {
             match theme {
                 Theme::Light => Default::default(),
-                Theme::Dark => &dark::Checkbox,
+                Theme::Dark => dark::Checkbox.into(),
             }
         }
     }

native/src/widget/checkbox.rs

@@ -44,7 +44,7 @@ pub struct Checkbox<'a, Message, Renderer: text::Renderer> {
     text_size: Option<u16>,
     font: Renderer::Font,
     text_color: Option<Color>,
-    style_sheet: &'a dyn StyleSheet,
+    style_sheet: Box<dyn StyleSheet + 'a>,
 }
 
 impl<'a, Message, Renderer: text::Renderer> Checkbox<'a, Message, Renderer> {
@@ -119,8 +119,11 @@ impl<'a, Message, Renderer: text::Renderer> Checkbox<'a, Message, Renderer> {
     }
 
     /// Sets the style of the [`Checkbox`].
-    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/checkbox.rs

@@ -39,8 +39,17 @@ 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/checkbox.rs

@@ -31,7 +31,7 @@ pub struct Checkbox<'a, Message> {
     id: Option<String>,
     width: Length,
     #[allow(dead_code)]
-    style_sheet: &'a dyn StyleSheet,
+    style_sheet: Box<dyn StyleSheet + 'a>,
 }
 
 impl<'a, Message> Checkbox<'a, Message> {
@@ -64,8 +64,11 @@ impl<'a, Message> Checkbox<'a, Message> {
     }
 
     /// Sets the style of the [`Checkbox`].
-    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
     }