Slider

pub fn buildSlider(scope: *ui.Scope, cx: *ui.Cx) anyerror!*ui.Node {
    const a = cx.allocator;
    const c = try col(cx, 16);

    const s1 = try ui.widgets.Slider(.{
        .min = 0,
        .max = 100,
        .initial_value = 40,
        .width = 320,
        .show_value = true,
        .test_id = "story.slider.track",
    }).mount(scope, cx);
    s1.wrapper.meta.ownership.meta.test_id = "story.slider.basic";

    const s2 = try ui.widgets.Slider(.{
        .min = 0,
        .max = 10,
        .step = 1,
        .initial_value = 5,
        .width = 320,
        .show_value = true,
        .test_id = "story.slider.stepped.track",
    }).mount(scope, cx);
    s2.wrapper.meta.ownership.meta.test_id = "story.slider.stepped";
    const continuous = try ui.widgets.Slider(.{
        .min = 0,
        .max = 10,
        .step = 0,
        .initial_value = 5,
        .width = 320,
        .show_value = true,
        .test_id = "story.slider.continuous.track",
    }).mount(scope, cx);
    const status = try label(cx, "");
    status.meta.ownership.meta.test_id = "story.slider.feedback.status";
    const pattern_status = try label(cx, "");
    pattern_status.meta.ownership.meta.test_id = "story.slider.feedback.pattern";
    const state = try scope.allocator.create(SliderFeedbackStory);
    state.* = .{ .basic = s1, .stepped = s2, .continuous = continuous, .status = status, .pattern_status = pattern_status };
    try scope.adoptResource(state, SliderFeedbackStory.destroy);
    s2.state.on_change = ui.Cx.handlerFrom(SliderFeedbackStory, state, SliderFeedbackStory.refresh);
    continuous.state.on_change = ui.Cx.handlerFrom(SliderFeedbackStory, state, SliderFeedbackStory.refresh);
    state.refresh();

    try c.appendChild(a, try label(cx, "Haptic feedback — opt in to try"));
    const toggle = try ui.widgets.Switch(.{
        .label_text = "Enable trackpad feedback",
        .initial_checked = false,
        .on_change = ui.Cx.boolHandlerFrom(SliderFeedbackStory, state, SliderFeedbackStory.toggle),
    }).mount(scope, cx);
    toggle.meta.ownership.meta.test_id = "story.slider.feedback.toggle";
    try c.appendChild(a, toggle);
    const pattern_options = [_]ui.widgets.checkbox.RadioOption{
        .{ .value = "alignment", .label_text = "Alignment" },
        .{ .value = "generic", .label_text = "Generic" },
        .{ .value = "level_change", .label_text = "Level change" },
    };
    const patterns = try ui.widgets.RadioGroup(.{
        .options = &pattern_options,
        .value = "alignment",
        .horizontal = true,
        .on_change = ui.Cx.strHandlerFrom(SliderFeedbackStory, state, SliderFeedbackStory.selectPattern),
    }).mount(scope, cx);
    for (patterns.children.items, [_][]const u8{
        "story.slider.pattern.alignment", "story.slider.pattern.generic", "story.slider.pattern.level_change",
    }) |option, test_id| option.meta.ownership.meta.test_id = test_id;
    try c.appendChild(a, patterns);
    try c.appendChild(a, pattern_status);
    try c.appendChild(a, try label(cx, "Native patterns, not intensity levels. Alignment is the default for step snapping."));
    try c.appendChild(a, status);
    try c.appendChild(a, try label(cx, "macOS Force Touch trackpad; device and system settings determine the feel."));
    try c.appendChild(a, try label(cx, "0–100, value 40"));
    try c.appendChild(a, s1.wrapper);
    try c.appendChild(a, try label(cx, "0–10 step 1, value 5"));
    try c.appendChild(a, s2.wrapper);
    try c.appendChild(a, try label(cx, "Continuous (step 0) — no feedback"));
    try c.appendChild(a, continuous.wrapper);
    const reset = try ui.widgets.Button(.{
        .label = "Reset both to 5 (no feedback)",
        .variant = .secondary,
        .on_click = ui.Cx.handlerFrom(SliderFeedbackStory, state, SliderFeedbackStory.reset),
    }).mount(scope, cx);
    reset.meta.ownership.meta.test_id = "story.slider.feedback.reset";
    try c.appendChild(a, reset);

    const s3 = try ui.widgets.Slider(.{ .initial_value = 30, .width = 320, .disabled = true }).mount(scope, cx);
    try c.appendChild(a, try label(cx, "Disabled"));
    try c.appendChild(a, s3.wrapper);

    return c;
}