guise-ui 1.5.3

A component library for gpui, Zed's GPU-accelerated UI framework: a themed palette, sizing tokens, 130+ composable components, a reactive state layer, and an in-app Safari-style inspector.
Documentation 
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//! `Radio` — a controlled single-choice button with an optional label.

use gpui::prelude::*;
use gpui::{div, px, App, ClickEvent, ElementId, IntoElement, SharedString, Window};

use super::{control_box_size, ClickHandler};
use crate::devtools::Probed;
use crate::theme::{theme, ColorName, Size};

/// A controlled radio button. Grouping/exclusivity is the
/// parent view's responsibility — give each a `checked` and a change handler.
#[derive(IntoElement)]
pub struct Radio {
  id: ElementId,
  checked: bool,
  label: Option<SharedString>,
  size: Size,
  color: ColorName,
  disabled: bool,
  on_change: Option<ClickHandler>,
}

impl Radio {
  pub fn new(id: impl Into<ElementId>) -> Self {
    Radio {
      id: id.into(),
      checked: false,
      label: None,
      size: Size::Sm,
      color: ColorName::Blue,
      disabled: false,
      on_change: None,
    }
  }

  pub fn checked(mut self, checked: bool) -> Self {
    self.checked = checked;
    self
  }

  pub fn label(mut self, label: impl Into<SharedString>) -> Self {
    self.label = Some(label.into());
    self
  }

  pub fn size(mut self, size: Size) -> Self {
    self.size = size;
    self
  }

  pub fn color(mut self, color: ColorName) -> Self {
    self.color = color;
    self
  }

  pub fn disabled(mut self, disabled: bool) -> Self {
    self.disabled = disabled;
    self
  }

  pub fn on_change(
    mut self,
    handler: impl Fn(&ClickEvent, &mut Window, &mut App) + 'static,
  ) -> Self {
    self.on_change = Some(Box::new(handler));
    self
  }
}

impl RenderOnce for Radio {
  fn render(self, _window: &mut Window, cx: &mut App) -> impl IntoElement {
    let t = theme(cx);
    let outer = control_box_size(self.size);
    let accent = t.color(self.color, t.primary_shade());

    let mut ring = div()
      .w(px(outer))
      .h(px(outer))
      .rounded(px(outer))
      .flex()
      .items_center()
      .justify_center();
    if self.checked {
      ring = ring.bg(accent.hsla()).child(
        div()
          .w(px(outer * 0.36))
          .h(px(outer * 0.36))
          .rounded(px(outer))
          .bg(t.white.hsla()),
      );
    } else {
      ring = ring
        .bg(t.surface().hsla())
        .border_1()
        .border_color(t.border().hsla());
    }

    let mut row = div()
      .id(self.id)
      .flex()
      .items_center()
      .gap(px(8.0))
      .child(ring);
    if let Some(label) = self.label {
      row = row.child(
        div()
          .text_size(px(t.font_size(self.size)))
          .text_color(t.text().hsla())
          .child(label),
      );
    }

    let element = if self.disabled {
      row.opacity(0.5)
    } else {
      if let Some(handler) = self.on_change {
        row = row.on_click(handler);
      }
      row
    };

    element
      .probe("Radio")
      .attr("size", self.size.label())
      .attr_if("checked", self.checked)
      .attr_if("disabled", self.disabled)
  }
}