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Use closures for PickList::style

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Héctor Ramón Jiménez 2024-03-12 16:40:56 +01:00
parent 3e190b9ee0
commit b721fd935c
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GPG key ID: 7CC46565708259A7
3 changed files with 42 additions and 96 deletions
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77
widget/src/overlay/menu.rs
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@ -38,7 +38,7 @@ pub struct Menu<
text_line_height: text::LineHeight,
text_shaping: text::Shaping,
font: Option<Renderer::Font>,
style: Style<Theme>,
style: &'a Style<'a, Theme>,
}
impl<'a, T, Message, Theme, Renderer> Menu<'a, T, Message, Theme, Renderer>
@ -48,37 +48,15 @@ where
Theme: 'a,
Renderer: text::Renderer + 'a,
{
/// Creates a new [`Menu`] with the given [`State`], a list of options, and
/// the message to produced when an option is selected.
/// Creates a new [`Menu`] with the given [`State`], a list of options,
/// the message to produced when an option is selected, and its [`Style`].
pub fn new(
state: &'a mut State,
options: &'a [T],
hovered_option: &'a mut Option<usize>,
on_selected: impl FnMut(T) -> Message + 'a,
on_option_hovered: Option<&'a dyn Fn(T) -> Message>,
) -> Self
where
Theme: DefaultStyle,
{
Self::with_style(
state,
options,
hovered_option,
on_selected,
on_option_hovered,
Theme::default_style(),
)
}
/// Creates a new [`Menu`] with the given [`State`], a list of options,
/// the message to produced when an option is selected, and its [`Style`].
pub fn with_style(
state: &'a mut State,
options: &'a [T],
hovered_option: &'a mut Option<usize>,
on_selected: impl FnMut(T) -> Message + 'a,
on_option_hovered: Option<&'a dyn Fn(T) -> Message>,
style: Style<Theme>,
style: &'a Style<'a, Theme>,
) -> Self {
Menu {
state,
@ -135,12 +113,6 @@ where
self
}
/// Sets the style of the [`Menu`].
pub fn style(mut self, style: impl Into<Style<Theme>>) -> Self {
self.style = style.into();
self
}
/// Turns the [`Menu`] into an overlay [`Element`] at the given target
/// position.
///
@ -190,7 +162,7 @@ where
container: Container<'a, Message, Theme, Renderer>,
width: f32,
target_height: f32,
style: Style<Theme>,
style: &'a Style<'a, Theme>,
}
impl<'a, Message, Theme, Renderer> Overlay<'a, Message, Theme, Renderer>
@ -234,10 +206,10 @@ where
text_line_height,
text_shaping,
padding,
style: style.list,
style: &style.list,
},
scrollable::Direction::default(),
style.scrollable,
&style.scrollable,
),
container::transparent,
);
@ -356,7 +328,7 @@ where
text_line_height: text::LineHeight,
text_shaping: text::Shaping,
font: Option<Renderer::Font>,
style: fn(&Theme) -> Appearance,
style: &'a dyn Fn(&Theme) -> Appearance,
}
impl<'a, T, Message, Theme, Renderer> Widget<Message, Theme, Renderer>
@ -599,39 +571,26 @@ pub struct Appearance {
}
/// The style of the different parts of a [`Menu`].
#[derive(Debug, PartialEq, Eq)]
pub struct Style<Theme> {
#[allow(missing_debug_implementations)]
pub struct Style<'a, Theme> {
/// The style of the list of the [`Menu`].
pub list: fn(&Theme) -> Appearance,
pub list: Box<dyn Fn(&Theme) -> Appearance + 'a>,
/// The style of the [`Scrollable`] of the [`Menu`].
pub scrollable: fn(&Theme, scrollable::Status) -> scrollable::Appearance,
pub scrollable: scrollable::Style<'a, Theme>,
}
impl Style<Theme> {
/// The default style of a [`Menu`] with the built-in [`Theme`].
pub const DEFAULT: Self = Self {
list: default,
scrollable: scrollable::default,
};
}
impl<Theme> Clone for Style<Theme> {
fn clone(&self) -> Self {
*self
}
}
impl<Theme> Copy for Style<Theme> {}
/// The default style of a [`Menu`].
pub trait DefaultStyle: Sized {
/// Returns the default style of a [`Menu`].
fn default_style() -> Style<Self>;
fn default_style() -> Style<'static, Self>;
}
impl DefaultStyle for Theme {
fn default_style() -> Style<Self> {
Style::<Theme>::DEFAULT
fn default_style() -> Style<'static, Self> {
Style {
list: Box::new(default),
scrollable: Box::new(scrollable::default),
}
}
}