components/radio
操作与选择 · 04 / 64

Radio

ui.widgets.RadioGroup

从互斥选项中选择唯一值。

BEHAVIOR CONTRACT

组内选择、value、name、键盘移动与焦点顺序由组件统一管理。

RECORDED INTERACTION

Harness 选择 Option Y,组内其余项自动取消。

examples/storybook/stories.zig:433
pub fn buildRadio(scope: *ui.Scope, cx: *ui.Cx) anyerror!*ui.Node {
    const a = cx.allocator;
    const c = try col(cx, 16);

    const status = try ui.text(cx, "selected → (none)", .{ .font_size = 13, .color = light.color.fg_secondary });
    status.meta.ownership.meta.test_id = "story.radio.status";
    try c.appendChild(a, status);
    const radio_story = try cx.bindState(RadioStory, .{ .status = status });

    try c.appendChild(a, try label(cx, "Radio"));
    try c.appendChild(a, try W.Radio(.{ .label_text = "Selected", .checked = true, .value = "a", .name = "g" }).mount(scope, cx));
    try c.appendChild(a, try W.Radio(.{ .label_text = "Unselected", .checked = false, .value = "b", .name = "g" }).mount(scope, cx));

    try c.appendChild(a, try label(cx, "RadioGroup"));
    const opts = [_]ui.widgets.checkbox.RadioOption{
        .{ .value = "x", .label_text = "Option X" },
        .{ .value = "y", .label_text = "Option Y" },
        .{ .value = "z", .label_text = "Option Z" },
    };
    const group = try W.RadioGroup(.{
        .options = &opts,
        .value = "x",
        .on_change = ui.Cx.strHandlerFrom(RadioStory, radio_story, RadioStory.onChange),
    }).mount(scope, cx);
    group.meta.ownership.meta.test_id = "story.radio.group";
    try c.appendChild(a, group);
    return c;
}
在 GitHub 查看源码examples/storybook/stories.zig:433

这是 Storybook 中该 story 的原样代码(zenit 5f9add5+wip 2026-09-30)。其中 W 即 ui.widgets,col / row / label 是 Storybook 内的布局小工具。

zenit · 双授权开源项目可按 GPL-3.0-only 免费使用;闭源或商业产品需要商业授权。可联系作者:zongyi.xzy#gmail.com(# 换成 @)zenit 5f9add5+wip 2026-09-30