浮层与反馈Overlays · 42 / 64

Modal

ui.widgets.Modal

阻塞式任务、确认与聚焦上下文。Blocking tasks, confirmations and focused context.

BEHAVIOR CONTRACT

window-root portal、barrier、焦点、Escape、inside / outside hit-test 和入场动画一起保证。Window-root portal, barrier, focus, Escape, inside / outside hit-testing and the entrance animation are guaranteed together.

RECORDED INTERACTION

Harness 打开居中 dialog，并悬停内部按钮验证不会误关。The harness opens the centered dialog and hovers inside it without dismissing.

examples/storybook/stories.zig:2504

pub fn buildModal(scope: *ui.Scope, cx: *ui.Cx) anyerror!*ui.Node {
    const a = cx.allocator;
    const c = try col(cx, 12);
    const vis = try scope.createSignal(bool, false);
    const st = try cx.bindState(ModalStory, .{ .visible = vis });
    const btn = try W.Button(.{ .label = "Open Modal", .on_click = cx.on(ModalStory, st, ModalStory.open) }).mount(scope, cx);
    btn.meta.ownership.meta.test_id = "story.modal.open";
    try c.appendChild(a, btn);

    const m = try W.Modal(.{ .title = "Example Modal", .width = 400 }).visible(vis).mount(scope, cx);
    m.dialog.meta.ownership.meta.test_id = "story.modal.dialog";
    try m.body.appendChild(a, try ui.text(cx, "Modal body content.", .{ .font_size = 14, .color = light.color.fg_primary }));
    // 带 hover 样式的按钮：damage-rect e2e 用它触发"层内小块变化 → 部分重绘"
    const ok_btn = try W.Button(.{ .label = "OK" }).mount(scope, cx);
    ok_btn.meta.ownership.meta.test_id = "story.modal.ok";
    try m.body.appendChild(a, ok_btn);
    // portaled 时 overlay 已挂到 window-root portal（覆盖整窗口）；未 portal 时才内联。
    if (!m.portaled) try c.appendChild(a, m.overlay);
    return c;
}

在 GitHub 查看源码View source on GitHubexamples/storybook/stories.zig:2504

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。The story's verbatim source from the Storybook (zenit 5f9add5+wip 2026-09-30). W is ui.widgets; col / row / label are small Storybook layout helpers.

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