liora-components 0.1.0

Enterprise-style native GPUI component library for Liora applications.
Documentation 
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use crate::motion::pop_in;
use gpui::{
    App, Context, FocusHandle, Focusable, Hsla, KeyBinding, MouseButton, Render, Rgba,
    SharedString, Window, prelude::*, px,
};

fn rgba(r: u8, g: u8, b: u8, a: f32) -> Hsla {
    Rgba {
        r: r as f32 / 255.0,
        g: g as f32 / 255.0,
        b: b as f32 / 255.0,
        a,
    }
    .into()
}

gpui::actions!(radio, [RadioSelect]);

pub struct Radio {
    checked: bool,
    disabled: bool,
    label: Option<SharedString>,
    focus_handle: FocusHandle,
    on_change: Option<Box<dyn Fn(&mut Window, &mut App) + 'static>>,
}

impl Radio {
    pub fn new(checked: bool, cx: &mut Context<Self>) -> Self {
        Self {
            checked,
            disabled: false,
            label: None,
            focus_handle: cx.focus_handle(),
            on_change: None,
        }
    }

    pub fn disabled(mut self, d: bool) -> Self {
        self.disabled = d;
        self
    }
    pub fn label(mut self, text: impl Into<SharedString>) -> Self {
        self.label = Some(text.into());
        self
    }
    pub fn on_change(mut self, cb: impl Fn(&mut Window, &mut App) + 'static) -> Self {
        self.on_change = Some(Box::new(cb));
        self
    }

    pub fn register_key_bindings(cx: &mut App) {
        cx.bind_keys([
            KeyBinding::new("space", RadioSelect, None),
            KeyBinding::new("enter", RadioSelect, None),
        ]);
    }

    fn select(&mut self, _: &RadioSelect, window: &mut Window, cx: &mut Context<Self>) {
        if !self.disabled && !self.checked {
            self.checked = true;
            cx.notify();
            if let Some(ref cb) = self.on_change {
                cb(window, cx);
            }
        }
    }
}

impl Focusable for Radio {
    fn focus_handle(&self, _cx: &App) -> FocusHandle {
        self.focus_handle.clone()
    }
}

impl Render for Radio {
    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
        let theme = &cx.global::<liora_core::Config>().theme;
        let focused = self.focus_handle.is_focused(_window);
        let sz = 16.0;
        let inner_sz = 8.0;

        let (border_color, dot_color) = if self.disabled {
            (theme.neutral.border, theme.neutral.text_disabled)
        } else if self.checked {
            (theme.primary.base, theme.primary.base)
        } else {
            (
                if focused {
                    theme.primary.base
                } else {
                    theme.neutral.border
                },
                rgba(0, 0, 0, 0.0),
            )
        };

        let mut row = gpui::div()
            .flex()
            .flex_row()
            .items_center()
            .gap_2()
            .on_action(cx.listener(Self::select));

        if !self.disabled {
            row = row.cursor_pointer().track_focus(&self.focus_handle);
            row = row.on_mouse_down(
                MouseButton::Left,
                cx.listener(|this, _, window, cx| {
                    window.focus(&this.focus_handle, cx);
                }),
            );
            row = row.on_mouse_up(
                MouseButton::Left,
                cx.listener(|this, _, window, cx| {
                    this.select(&RadioSelect, window, cx);
                }),
            );
        } else {
            row = row.cursor_not_allowed();
        }

        let dot = || {
            gpui::div()
                .w(px(inner_sz))
                .h(px(inner_sz))
                .rounded(px(inner_sz / 2.0))
                .bg(dot_color)
        };

        let circle = gpui::div()
            .flex_none()
            .w(px(sz))
            .h(px(sz))
            .rounded(px(sz / 2.0))
            .border_1()
            .border_color(border_color)
            .flex()
            .items_center()
            .justify_center()
            .when(self.checked, |s| {
                s.child(pop_in(
                    format!("liora-radio-dot-motion-{}", cx.entity().entity_id()),
                    dot(),
                ))
            })
            .when(!self.checked, |s| s.child(dot()));

        row = row.child(circle);

        if let Some(ref label) = self.label {
            row = row.child(
                gpui::div()
                    .text_size(px(theme.font_size.md))
                    .text_color(theme.neutral.text_1)
                    .child(label.clone()),
            );
        }

        row
    }
}