Switch

A toggle switch component for binary on/off states. Features smooth animations, different sizes, labels, disabled state, and customizable positioning.

Use on_change for requested values. The owner stores the value and calls cx.notify(). The existing on_click name remains a compatibility alias; setting either replaces the same handler, so the last call wins.

#Import

use gpui_kit::component::switch::Switch;

#Usage

#Basic Switch

Switch::new("my-switch")
    .checked(false)
    .on_change(|checked, _, _| {
        println!("Switch is now: {}", checked);
    })

#Controlled Switch

struct MyView {
    is_enabled: bool,
}

impl Render for MyView {
    fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
        Switch::new("switch")
            .checked(self.is_enabled)
            .on_change(cx.listener(|view, checked, _, cx| {
                view.is_enabled = *checked;
                cx.notify();
            }))
    }
}

#With Label

Switch::new("notifications")
    .label("Enable notifications")
    .checked(true)
    .on_change(|checked, _, _| {
        println!("Notifications: {}", if *checked { "enabled" } else { "disabled" });
    })

#Different Sizes

// Small switch
Switch::new("small-switch")
    .small()
    .label("Small switch")

// Medium switch (default)
Switch::new("medium-switch")
    .label("Medium switch")

// Using explicit size
Switch::new("custom-switch")
    .with_size(Size::Small)
    .label("Custom size")

#Disabled State

// Disabled unchecked
Switch::new("disabled-off")
    .label("Disabled (off)")
    .disabled(true)
    .checked(false)

// Disabled checked
Switch::new("disabled-on")
    .label("Disabled (on)")
    .disabled(true)
    .checked(true)

#Custom Color

Use .color() to override the checked-state background color. The disabled alpha is applied automatically on top of the custom color.

// Success color when checked
Switch::new("switch")
    .label("Success")
    .checked(true)
    .color(cx.theme().success)

// Danger color when checked
Switch::new("switch")
    .label("Danger")
    .checked(true)
    .color(cx.theme().danger)

// Custom color + disabled: color is shown at 50% opacity
Switch::new("switch")
    .label("Disabled")
    .checked(true)
    .color(cx.theme().success)
    .disabled(true)

#With Tooltip

Switch::new("switch")
    .label("Airplane mode")
    .tooltip("Enable airplane mode to disable all wireless connections")
    .checked(false)

#API Reference

#Switch

#Styling

Implements Sizable and Disableable traits:

• small() - Small switch size (28x16px toggle area)
• medium() - Medium switch size (36x20px toggle area, default)
• with_size(size) - Set explicit size
• disabled(bool) - Disabled state

#Styling Properties

The switch can also be styled using GPUI’s styling methods:

• w(width) - Custom width
• h(height) - Custom height
• Standard margin, padding, and positioning methods

#Examples

#Settings Panel

struct SettingsView {
    marketing_emails: bool,
    security_emails: bool,
    push_notifications: bool,
}

v_flex()
    .gap_4()
    .child(
        // Setting with description
        v_flex()
            .gap_2()
            .child(
                h_flex()
                    .items_center()
                    .justify_between()
                    .child(
                        v_flex()
                            .child(Label::new("Marketing emails").text_lg())
                            .child(
                                Label::new("Receive emails about new products and features")
                                    .text_color(theme.muted_foreground)
                            )
                    )
                    .child(
                        Switch::new("marketing")
                            .checked(self.marketing_emails)
                            .on_change(cx.listener(|view, checked, _, cx| {
                                view.marketing_emails = *checked;
                                cx.notify();
                            }))
                    )
            )
    )
    .child(
        // Simple setting
        h_flex()
            .items_center()
            .justify_between()
            .child(Label::new("Push notifications"))
            .child(
                Switch::new("push")
                    .checked(self.push_notifications)
                    .on_change(cx.listener(|view, checked, _, cx| {
                        view.push_notifications = *checked;
                        cx.notify();
                    }))
            )
    )

#Compact Settings List

v_flex()
    .gap_3()
    .child(
        Switch::new("wifi")
            .label("Wi-Fi")
            .label_side(Side::Left)
            .checked(true)
            .small()
    )
    .child(
        Switch::new("bluetooth")
            .label("Bluetooth")
            .label_side(Side::Left)
            .checked(false)
            .small()
    )
    .child(
        Switch::new("airplane")
            .label("Airplane Mode")
            .label_side(Side::Left)
            .checked(false)
            .disabled(true)
            .small()
    )

#Form Integration

struct FormData {
    subscribe_newsletter: bool,
    enable_notifications: bool,
    remember_me: bool,
}

v_flex()
    .gap_4()
    .p_4()
    .border_1()
    .border_color(theme.border)
    .rounded(theme.radius)
    .child(
        Switch::new("newsletter")
            .label("Subscribe to newsletter")
            .checked(self.subscribe_newsletter)
            .tooltip("Receive monthly updates about new features")
            .on_change(cx.listener(|view, checked, _, cx| {
                view.subscribe_newsletter = *checked;
                cx.notify();
            }))
    )
    .child(
        Switch::new("notifications")
            .label("Enable notifications")
            .checked(self.enable_notifications)
            .on_change(cx.listener(|view, checked, _, cx| {
                view.enable_notifications = *checked;
                cx.notify();
            }))
    )
    .child(
        Switch::new("remember")
            .label("Remember me")
            .checked(self.remember_me)
            .small()
            .on_change(cx.listener(|view, checked, _, cx| {
                view.remember_me = *checked;
                cx.notify();
            }))
    )

#Custom Styling

Switch::new("custom")
    .label("Custom styled switch")
    .w(px(200.))
    .checked(true)
    .on_change(|checked, _, _| {
        println!("Custom switch: {}", checked);
    })

#Animation

The switch features smooth animations:

• Toggle animation: 150ms duration when switching states
• Background color transition: Changes from switch color to primary color
• Position animation: Smooth movement of the toggle indicator
• Disabled state: Animations are disabled when the switch is disabled