use gpui::{AnyView, ClickEvent}; use crate::{prelude::*, ButtonLike, ButtonLikeRounding}; /// The position of a [`ToggleButton`] within a group of buttons.#[derive(Debug, PartialEq, Eq, Clone, Copy)]pub enum ToggleButtonPosition {    /// The toggle button is first in the group.    First,     /// The toggle button is in the middle of the group (i.e., it is not the first or last toggle button).    Middle,     /// The toggle button is last in the group.    Last,} #[derive(IntoElement)]pub struct ToggleButton {    base: ButtonLike,    position_in_group: Option<ToggleButtonPosition>,    label: SharedString,    label_color: Option<Color>,} impl ToggleButton {    pub fn new(id: impl Into<ElementId>, label: impl Into<SharedString>) -> Self {        Self {            base: ButtonLike::new(id),            position_in_group: None,            label: label.into(),            label_color: None,        }    }     pub fn color(mut self, label_color: impl Into<Option<Color>>) -> Self {        self.label_color = label_color.into();        self    }     pub fn position_in_group(mut self, position: ToggleButtonPosition) -> Self {        self.position_in_group = Some(position);        self    }     pub fn first(self) -> Self {        self.position_in_group(ToggleButtonPosition::First)    }     pub fn middle(self) -> Self {        self.position_in_group(ToggleButtonPosition::Middle)    }     pub fn last(self) -> Self {        self.position_in_group(ToggleButtonPosition::Last)    }} impl Selectable for ToggleButton {    fn selected(mut self, selected: bool) -> Self {        self.base = self.base.selected(selected);        self    }} impl SelectableButton for ToggleButton {    fn selected_style(mut self, style: ButtonStyle) -> Self {        self.base.selected_style = Some(style);        self    }} impl Disableable for ToggleButton {    fn disabled(mut self, disabled: bool) -> Self {        self.base = self.base.disabled(disabled);        self    }} impl Clickable for ToggleButton {    fn on_click(mut self, handler: impl Fn(&ClickEvent, &mut WindowContext) + 'static) -> Self {        self.base = self.base.on_click(handler);        self    }} impl ButtonCommon for ToggleButton {    fn id(&self) -> &ElementId {        self.base.id()    }     fn style(mut self, style: ButtonStyle) -> Self {        self.base = self.base.style(style);        self    }     fn size(mut self, size: ButtonSize) -> Self {        self.base = self.base.size(size);        self    }     fn tooltip(mut self, tooltip: impl Fn(&mut WindowContext) -> AnyView + 'static) -> Self {        self.base = self.base.tooltip(tooltip);        self    }} impl RenderOnce for ToggleButton {    fn render(self, _cx: &mut WindowContext) -> impl IntoElement {        let is_disabled = self.base.disabled;        let is_selected = self.base.selected;         let label_color = if is_disabled {            Color::Disabled        } else if is_selected {            Color::Selected        } else {            self.label_color.unwrap_or_default()        };         self.base            .when_some(self.position_in_group, |this, position| match position {                ToggleButtonPosition::First => this.rounding(ButtonLikeRounding::Left),                ToggleButtonPosition::Middle => this.rounding(None),                ToggleButtonPosition::Last => this.rounding(ButtonLikeRounding::Right),            })            .child(                Label::new(self.label)                    .color(label_color)                    .line_height_style(LineHeightStyle::UiLabel),            )    }}