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//! Toggle group component for gpuikit
//!
//! A toggle group allows selecting one or multiple options from a group of toggle buttons.
use crate::theme::{ActiveTheme, Themeable};
use crate::traits::disableable::Disableable;
use crate::traits::orientable::{Orientable, Orientation};
use gpui::{
div, prelude::*, rems, Context, Div, ElementId, EventEmitter, FontWeight, Hsla,
InteractiveElement, IntoElement, MouseButton, ParentElement, Render, SharedString, Stateful,
StatefulInteractiveElement, Styled, Window,
};
/// Selection mode for the toggle group
#[derive(Debug, Clone, Copy, Default, PartialEq, Eq)]
pub enum ToggleGroupMode {
/// Only one item can be selected at a time (like radio buttons)
#[default]
Single,
/// Multiple items can be selected simultaneously
Multiple,
}
/// Event emitted when the toggle group selection changes
pub struct ToggleGroupChanged<T: Clone> {
/// Currently selected values
pub selected: Vec<T>,
}
/// A single toggle option in the group
#[derive(Clone)]
pub struct ToggleOption<T: Clone> {
/// The value associated with this option
pub value: T,
/// Display label for the option
pub label: SharedString,
/// Whether this option is disabled
pub disabled: bool,
}
impl<T: Clone> ToggleOption<T> {
/// Create a new toggle option with a value and label
pub fn new(value: T, label: impl Into<SharedString>) -> Self {
Self {
value,
label: label.into(),
disabled: false,
}
}
/// Set whether this option is disabled
pub fn disabled(mut self, disabled: bool) -> Self {
self.disabled = disabled;
self
}
}
impl<T: Clone> Disableable for ToggleOption<T> {
fn is_disabled(&self) -> bool {
self.disabled
}
fn disabled(mut self, disabled: bool) -> Self {
self.disabled = disabled;
self
}
}
/// A toggle group component for selecting one or multiple options
///
/// # Example
///
/// ```ignore
/// // Single-select mode (default)
/// let single = toggle_group(
/// "alignment",
/// vec![
/// toggle_option("left", "Left"),
/// toggle_option("center", "Center"),
/// toggle_option("right", "Right"),
/// ],
/// ).selected(vec!["center"]);
///
/// // Multi-select mode
/// let multi = toggle_group(
/// "features",
/// vec![
/// toggle_option("bold", "B"),
/// toggle_option("italic", "I"),
/// toggle_option("underline", "U"),
/// ],
/// ).mode(ToggleGroupMode::Multiple)
/// .selected(vec!["bold", "italic"]);
/// ```
pub struct ToggleGroup<T: Clone + PartialEq + 'static> {
id: ElementId,
options: Vec<ToggleOption<T>>,
selected: Vec<T>,
mode: ToggleGroupMode,
disabled: bool,
orientation: Orientation,
}
impl<T: Clone + PartialEq + 'static> EventEmitter<ToggleGroupChanged<T>> for ToggleGroup<T> {}
impl<T: Clone + PartialEq + 'static> ToggleGroup<T> {
/// Create a new toggle group with an ID and options
pub fn new(id: impl Into<ElementId>, options: Vec<ToggleOption<T>>) -> Self {
Self {
id: id.into(),
options,
selected: Vec::new(),
mode: ToggleGroupMode::default(),
disabled: false,
orientation: Orientation::Horizontal,
}
}
/// Set the selection mode (single or multiple)
pub fn mode(mut self, mode: ToggleGroupMode) -> Self {
self.mode = mode;
self
}
/// Set the selected values
pub fn selected(mut self, values: Vec<T>) -> Self {
self.selected = values;
self
}
/// Set a single selected value (convenience for single-select mode)
pub fn selected_value(mut self, value: T) -> Self {
self.selected = vec![value];
self
}
/// Get the currently selected values
pub fn get_selected(&self) -> &[T] {
&self.selected
}
/// Check if a value is selected
pub fn is_value_selected(&self, value: &T) -> bool {
self.selected.contains(value)
}
/// Set the selected values programmatically
pub fn set_selected(&mut self, values: Vec<T>, cx: &mut Context<Self>) {
if self.selected != values {
self.selected = values.clone();
cx.emit(ToggleGroupChanged { selected: values });
cx.notify();
}
}
fn toggle_option(&mut self, index: usize, cx: &mut Context<Self>) {
if let Some(option) = self.options.get(index) {
if option.disabled || self.disabled {
return;
}
let value = option.value.clone();
let is_selected = self.selected.contains(&value);
match self.mode {
ToggleGroupMode::Single => {
// In single mode, always select the clicked option (unless it's already selected)
if !is_selected {
self.selected = vec![value.clone()];
cx.emit(ToggleGroupChanged {
selected: vec![value],
});
cx.notify();
}
}
ToggleGroupMode::Multiple => {
// In multiple mode, toggle the selection
if is_selected {
self.selected.retain(|v| v != &value);
} else {
self.selected.push(value);
}
cx.emit(ToggleGroupChanged {
selected: self.selected.clone(),
});
cx.notify();
}
}
}
}
}
impl<T: Clone + PartialEq + 'static> Render for ToggleGroup<T> {
fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
let theme = cx.theme();
let group_disabled = self.disabled;
let selected = self.selected.clone();
let orientation = self.orientation;
let num_options = self.options.len();
let container = if orientation == Orientation::Vertical {
div().flex().flex_col()
} else {
div().flex().flex_row()
};
container
.id(self.id.clone())
.bg(theme.surface_secondary())
.border_1()
.border_color(theme.border())
.rounded_md()
.p(rems(0.125))
.gap(rems(0.125))
.children(
self.options
.iter()
.enumerate()
.map(|(index, option)| {
let is_selected = selected.contains(&option.value);
let is_disabled = group_disabled || option.disabled;
let label = option.label.clone();
let is_first = index == 0;
let is_last = index == num_options - 1;
let bg: Option<Hsla> = if is_disabled {
Some(theme.surface_tertiary())
} else if is_selected {
Some(theme.surface())
} else {
None
};
let text_color = if is_disabled {
theme.fg_disabled()
} else if is_selected {
theme.fg()
} else {
theme.fg_muted()
};
div()
.id(ElementId::NamedInteger(
"toggle-option".into(),
index as u64,
))
.flex()
.items_center()
.justify_center()
.px(rems(0.75))
.py(rems(0.375))
.text_sm()
.font_weight(FontWeight::MEDIUM)
.when_some(bg, |this, bg| this.bg(bg))
.text_color(text_color)
.when(is_selected && !is_disabled, |this: Stateful<Div>| {
this.shadow_sm()
})
// Apply rounded corners based on orientation and position
.when(orientation == Orientation::Horizontal, |this| {
this.when(is_first, |t| t.rounded_l_sm())
.when(is_last, |t| t.rounded_r_sm())
.when(!is_first && !is_last, |t| t.rounded_none())
})
.when(orientation == Orientation::Vertical, |this| {
this.when(is_first, |t| t.rounded_t_sm())
.when(is_last, |t| t.rounded_b_sm())
.when(!is_first && !is_last, |t| t.rounded_none())
})
.when(!is_disabled, |this| {
this.cursor_pointer()
.hover(|style| {
if is_selected {
style
} else {
style.bg(theme.surface_tertiary())
}
})
.on_mouse_down(MouseButton::Left, |_, window, _| {
window.prevent_default()
})
.on_click(cx.listener(move |this, _, _, cx| {
this.toggle_option(index, cx);
}))
})
.when(is_disabled, |this| this.cursor_not_allowed().opacity(0.65))
.child(label)
})
.collect::<Vec<_>>(),
)
}
}
/// Convenience function to create a toggle group
pub fn toggle_group<T: Clone + PartialEq + 'static>(
id: impl Into<ElementId>,
options: Vec<ToggleOption<T>>,
) -> ToggleGroup<T> {
ToggleGroup::new(id, options)
}
/// Convenience function to create a toggle option
pub fn toggle_option<T: Clone>(value: T, label: impl Into<SharedString>) -> ToggleOption<T> {
ToggleOption::new(value, label)
}
impl<T: Clone + PartialEq + 'static> Disableable for ToggleGroup<T> {
fn is_disabled(&self) -> bool {
self.disabled
}
fn disabled(mut self, disabled: bool) -> Self {
self.disabled = disabled;
self
}
}
impl<T: Clone + PartialEq + 'static> Orientable for ToggleGroup<T> {
fn orientation(mut self, orientation: Orientation) -> Self {
self.orientation = orientation;
self
}
}