chore: merged with main, conflict resolved

This commit is contained in:
Ilia Mashkov
2026-06-02 21:52:33 +03:00
18 changed files with 1275 additions and 260 deletions
+50 -52
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@@ -5,11 +5,13 @@
-->
<script lang="ts">
import { cn } from '$shared/lib';
import { Slider } from '$shared/ui';
import {
Popover,
Slider,
} from '$shared/ui';
import { Button } from '$shared/ui/Button';
import MinusIcon from '@lucide/svelte/icons/minus';
import PlusIcon from '@lucide/svelte/icons/plus';
import { Popover } from 'bits-ui';
import TechText from '../TechText/TechText.svelte';
import type {
ControlLabels,
@@ -103,59 +105,55 @@ const displayLabel = $derived(label ?? controlLabel ?? '');
<!-- Trigger -->
<div class="relative mx-1">
<Popover.Root bind:open>
<Popover.Trigger>
{#snippet child({ props })}
<button
{...props}
class={cn(
'flex flex-col flex-center w-14 py-1',
'select-none rounded-none transition-all duration-fast',
'border border-transparent',
'focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-brand/30',
open
? 'surface-card-elevated'
: 'hover:bg-paper/50 dark:hover:bg-dark-card/50',
)}
aria-label={controlLabel ? `${controlLabel}: ${formattedValue()}` : undefined}
>
<!-- Label row -->
{#if displayLabel}
<span
class="
text-3xs text-label-mono
text-neutral-900 dark:text-neutral-100
mb-0.5 leading-none
"
>
{displayLabel}
</span>
{/if}
<Popover bind:open side="top" align="center">
{#snippet trigger(props)}
<button
{...props}
class={cn(
'flex flex-col flex-center w-14 py-1',
'select-none rounded-none transition-all duration-fast',
'border border-transparent',
'focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-brand/30',
open
? 'surface-card-elevated'
: 'hover:bg-paper/50 dark:hover:bg-dark-card/50',
)}
aria-label={controlLabel ? `${controlLabel}: ${formattedValue()}` : undefined}
>
<!-- Label row -->
{#if displayLabel}
<span
class="
text-3xs text-label-mono
text-neutral-900 dark:text-neutral-100
mb-0.5 leading-none
"
>
{displayLabel}
</span>
{/if}
<!-- Value row -->
<TechText variant="muted" size="md">
{formattedValue()}
</TechText>
</button>
{/snippet}
</Popover.Trigger>
<!-- Value row -->
<TechText variant="muted" size="md">
{formattedValue()}
</TechText>
</button>
{/snippet}
<!-- Vertical slider popover -->
<Popover.Content
class="w-auto py-4 px-3 h-64 flex-center rounded-none surface-card-elevated"
align="center"
side="top"
>
<Slider
class="h-full"
bind:value={control.value}
min={control.min}
max={control.max}
step={control.step}
orientation="vertical"
/>
</Popover.Content>
</Popover.Root>
{#snippet children()}
<div class="w-auto py-4 px-3 h-64 flex-center rounded-none surface-card-elevated">
<Slider
class="h-full"
bind:value={control.value}
min={control.min}
max={control.max}
step={control.step}
orientation="vertical"
/>
</div>
{/snippet}
</Popover>
</div>
<!-- Increase button -->
@@ -3,6 +3,7 @@ import {
render,
screen,
waitFor,
within,
} from '@testing-library/svelte';
import ComboControl from './ComboControl.svelte';
import { createNumericControlMock } from './testing/createNumericControlMock.svelte';
@@ -16,6 +17,16 @@ function makeControl(value: number, opts: { min?: number; max?: number; step?: n
});
}
/**
* The trigger is the button wired to the popover (has popovertarget). The native
* Popover always renders its content (the vertical slider, which also displays the
* value) in the DOM, so value assertions must be scoped to the trigger to avoid
* matching the slider's own value label.
*/
function getTrigger(): HTMLElement {
return document.querySelector('button[popovertarget]') as HTMLElement;
}
describe('ComboControl', () => {
describe('Rendering', () => {
it('renders decrease and increase buttons', () => {
@@ -26,17 +37,17 @@ describe('ComboControl', () => {
it('renders the current integer value', () => {
render(ComboControl, { control: makeControl(42) });
expect(screen.getByText('42')).toBeInTheDocument();
expect(within(getTrigger()).getByText('42')).toBeInTheDocument();
});
it('formats decimal value to 1 decimal place when step >= 0.1', () => {
render(ComboControl, { control: makeControl(1.5, { step: 0.1 }) });
expect(screen.getByText('1.5')).toBeInTheDocument();
expect(within(getTrigger()).getByText('1.5')).toBeInTheDocument();
});
it('formats decimal value to 2 decimal places when step < 0.1', () => {
render(ComboControl, { control: makeControl(1.55, { step: 0.01 }) });
expect(screen.getByText('1.55')).toBeInTheDocument();
expect(within(getTrigger()).getByText('1.55')).toBeInTheDocument();
});
it('renders label when label prop is provided', () => {
@@ -106,16 +117,32 @@ describe('ComboControl', () => {
const control = makeControl(50);
render(ComboControl, { control });
await fireEvent.click(screen.getByLabelText('Increase'));
await waitFor(() => expect(screen.getByText('51')).toBeInTheDocument());
await waitFor(() => expect(within(getTrigger()).getByText('51')).toBeInTheDocument());
});
});
describe('Popover', () => {
it('opens popover with vertical slider on trigger click', async () => {
/**
* The native Popover always renders its content; opening is driven by the
* browser's declarative popovertarget invoker, which jsdom does not simulate
* on click (mirrors Popover.svelte.test.ts). So assert the wired-but-closed
* state, then drive the open through the API the browser would call.
*/
it('exposes a popover trigger with the vertical slider as its content', async () => {
render(ComboControl, { control: makeControl(50), controlLabel: 'Size control' });
expect(screen.queryByRole('slider')).not.toBeInTheDocument();
await fireEvent.click(screen.getByText('Size control'));
await waitFor(() => expect(screen.getByRole('slider')).toBeInTheDocument());
const trigger = getTrigger();
expect(trigger).toHaveAttribute('aria-expanded', 'false');
const content = document.getElementById(trigger.getAttribute('popovertarget')!) as HTMLElement;
expect(content).toHaveAttribute('data-state', 'closed');
// The vertical slider lives inside the popover content. While closed the
// content is visibility:hidden, so query including hidden elements.
expect(within(content).getByRole('slider', { hidden: true })).toBeInTheDocument();
content.showPopover();
await waitFor(() => expect(content).toHaveAttribute('data-state', 'open'));
expect(trigger).toHaveAttribute('aria-expanded', 'true');
});
});
@@ -0,0 +1,117 @@
<script module>
import { defineMeta } from '@storybook/addon-svelte-csf';
import Popover from './Popover.svelte';
const { Story } = defineMeta({
title: 'Shared/Popover',
component: Popover,
tags: ['autodocs'],
parameters: {
docs: {
description: {
component:
'Anchored popover on the native Popover API (top-layer, light-dismiss, ESC, focus return). Hand-rolled side/align/offset positioning with flip + shift.',
},
story: { inline: false }, // Render stories in iframe for state isolation
},
},
argTypes: {
side: {
control: 'select',
options: ['top', 'bottom', 'left', 'right'],
description: 'Preferred side',
},
align: {
control: 'select',
options: ['start', 'center', 'end'],
description: 'Cross-axis alignment',
},
sideOffset: {
control: 'number',
description: 'Gap between trigger and content (px)',
},
},
});
</script>
<script lang="ts">
import { Slider } from '$shared/ui';
let open = $state(false);
let value = $state(50);
</script>
<Story name="Bottom">
{#snippet template()}
<div class="p-32 flex-center min-h-screen">
<Popover bind:open side="bottom" align="center" sideOffset={8}>
{#snippet trigger(props)}
<button {...props} class="surface-card-elevated px-4 py-2">Open popover</button>
{/snippet}
{#snippet children()}
<div class="surface-popover p-4 w-56">Popover content</div>
{/snippet}
</Popover>
</div>
{/snippet}
</Story>
<Story name="Top">
{#snippet template()}
<div class="p-32 flex-center min-h-screen">
<Popover bind:open side="top" align="center" sideOffset={8}>
{#snippet trigger(props)}
<button {...props} class="surface-card-elevated px-4 py-2">Open popover</button>
{/snippet}
{#snippet children()}
<div class="surface-popover p-4 w-56">Popover content</div>
{/snippet}
</Popover>
</div>
{/snippet}
</Story>
<!--
Mirrors TypographyMenu: top/end placement with a programmatic Close button
wired to the `close()` param of the children snippet.
-->
<Story name="AlignedEnd">
{#snippet template()}
<div class="p-32 flex-center min-h-screen">
<Popover bind:open side="top" align="end" sideOffset={8}>
{#snippet trigger(props)}
<button {...props} class="surface-card-elevated px-4 py-2">Open menu</button>
{/snippet}
{#snippet children({ close })}
<div class="surface-popover p-4 w-72">
<h3 class="text-sm font-medium mb-3">Menu header</h3>
<p class="text-sm text-muted-foreground mb-4">
Aligned to the trigger's end edge.
</p>
<button class="surface-card-elevated px-3 py-1.5 text-sm" onclick={close}>
Close
</button>
</div>
{/snippet}
</Popover>
</div>
{/snippet}
</Story>
<!-- Mirrors ComboControl: a vertical Slider lives inside the popover content. -->
<Story name="WithSlider">
{#snippet template()}
<div class="p-32 flex-center min-h-screen">
<Popover bind:open side="top" align="center" sideOffset={8}>
{#snippet trigger(props)}
<button {...props} class="surface-card-elevated px-4 py-2">Adjust value</button>
{/snippet}
{#snippet children()}
<div class="surface-card-elevated p-3 h-64 flex-center">
<Slider orientation="vertical" min={0} max={100} bind:value />
</div>
{/snippet}
</Popover>
</div>
{/snippet}
</Story>
+225
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@@ -0,0 +1,225 @@
<!--
Component: Popover
Anchored popover on the native Popover API (top-layer, light-dismiss, ESC,
focus return handled by the browser). Placement is computed by the pure
`popover-position` module and applied as fixed coordinates; it repositions
on scroll/resize/content-resize. `open` is two-way bindable. The trigger is
consumer-rendered via the `trigger` snippet, which spreads a props object
(an attachment captures the trigger element; `popovertarget` wires the
native invoker). `children` receives `close()` to dismiss programmatically.
-->
<script lang="ts">
import { cn } from '$shared/lib';
import type { Snippet } from 'svelte';
import { createAttachmentKey } from 'svelte/attachments';
import {
type Align,
type Side,
computePosition,
} from './popover-position';
interface Props {
/**
* Open state (two-way bindable)
* @default false
*/
open?: boolean;
/**
* Preferred side
* @default 'bottom'
*/
side?: Side;
/**
* Cross-axis alignment
* @default 'center'
*/
align?: Align;
/**
* Gap between trigger and content (px)
* @default 0
*/
sideOffset?: number;
/**
* CSS classes applied to the content element
*/
class?: string;
/**
* ARIA role for the content
* @default 'dialog'
*/
role?: 'dialog' | 'menu' | 'listbox';
/**
* Trigger snippet — spread the provided props onto your trigger element
*/
trigger: Snippet<[Record<string, unknown>]>;
/**
* Content snippet — receives `close()` for programmatic dismissal
*/
children: Snippet<[{ close: () => void }]>;
}
let {
open = $bindable(false),
side = 'bottom',
align = 'center',
sideOffset = 0,
class: className,
role = 'dialog',
trigger,
children,
}: Props = $props();
const uid = $props.id();
const contentId = `popover-${uid}`;
let triggerEl: HTMLElement | undefined = $state();
let contentEl: HTMLElement | undefined = $state();
/**
* Side actually used after flip. Seeded from the `side` prop; the authoritative
* value is written by updatePosition() on every open, so the seed only matters
* for the closed state (hence the intentional state_referenced_locally warning).
*/
let resolvedSide = $state(side);
/**
* True once updatePosition has applied coordinates for the current open.
* Gates visibility so the content never paints at its pre-positioned (0,0)
* top-layer default before the first measurement.
*/
let positioned = $state(false);
/**
* Resolved fixed-position coordinates. Applied through the reactive `style`
* attribute (not imperatively) so they can't be wiped when the attribute
* re-renders — mixing the two caused a one-frame top-left flash.
*/
let x = $state(0);
let y = $state(0);
/**
* Actual DOM open state, driven by the `toggle` event. Source of truth for
* whether the browser currently shows the popover; `open` is the public binding.
*/
let shown = $state(false);
/**
* Stable attachment that captures the consumer's trigger element for measuring.
* Created once so spreading reactive `triggerProps` doesn't re-run it.
*/
const attachKey = createAttachmentKey();
const attachTrigger = (node: HTMLElement) => {
triggerEl = node;
return () => {
if (triggerEl === node) {
triggerEl = undefined;
}
};
};
const triggerProps = $derived({
popovertarget: contentId,
'aria-haspopup': role,
'aria-expanded': open,
'aria-controls': contentId,
[attachKey]: attachTrigger,
});
/**
* Recompute and apply the fixed-position coordinates.
*/
function updatePosition(): void {
if (!triggerEl || !contentEl) {
return;
}
const result = computePosition({
triggerRect: triggerEl.getBoundingClientRect(),
contentRect: { width: contentEl.offsetWidth, height: contentEl.offsetHeight },
viewport: { width: window.innerWidth, height: window.innerHeight },
side,
align,
sideOffset,
});
resolvedSide = result.side;
x = result.x;
y = result.y;
positioned = true;
}
/**
* Mirror the `toggle` event into our state.
*/
function onToggle(event: ToggleEvent): void {
shown = event.newState === 'open';
open = shown;
if (!shown) {
positioned = false;
}
}
/**
* Programmatic dismiss for the content snippet.
*/
function close(): void {
open = false;
}
// state -> browser: open the popover when `open` flips true and it isn't shown,
// and close it when `open` flips false while shown. `shown` (from toggle) breaks
// the loop so we never call show/hide redundantly.
$effect(() => {
const el = contentEl;
if (!el) {
return;
}
if (open && !shown) {
el.showPopover();
} else if (!open && shown) {
el.hidePopover();
}
});
// Position while shown; reposition on scroll/resize/content-resize; auto-clean.
$effect(() => {
if (!shown || !contentEl || !triggerEl) {
return;
}
updatePosition();
const observer = new ResizeObserver(() => updatePosition());
observer.observe(contentEl);
const onScroll = () => updatePosition();
window.addEventListener('scroll', onScroll, true);
window.addEventListener('resize', onScroll);
return () => {
observer.disconnect();
window.removeEventListener('scroll', onScroll, true);
window.removeEventListener('resize', onScroll);
};
});
</script>
{@render trigger(triggerProps)}
<!--
inset:auto + margin:0 neutralize the UA popover stylesheet (which sets
inset:0; margin:auto to center it) so the JS-applied left/top win.
visibility is hidden until updatePosition runs (see `positioned`).
-->
<div
bind:this={contentEl}
id={contentId}
popover="auto"
{role}
data-side={resolvedSide}
data-state={shown ? 'open' : 'closed'}
ontoggle={onToggle}
style={`position: fixed; inset: auto; left: ${x}px; top: ${y}px; margin: 0;${positioned ? '' : ' visibility: hidden;'}`}
class={cn(
'opacity-0 scale-95 transition-discrete transition-[opacity,transform] duration-fast',
'starting:opacity-0 starting:scale-95',
'[&:popover-open]:opacity-100 [&:popover-open]:scale-100',
'data-[side=top]:origin-bottom data-[side=bottom]:origin-top',
className,
)}
>
{@render children({ close })}
</div>
@@ -0,0 +1,49 @@
import {
fireEvent,
render,
screen,
} from '@testing-library/svelte';
import Harness from './PopoverHarness.svelte';
/**
* Resolve the popover content element (the [popover] ancestor of the test content).
*/
function getContent(): HTMLElement {
return screen.getByTestId('content').closest('[popover]') as HTMLElement;
}
describe('Popover', () => {
it('renders the trigger with aria wiring, closed by default', () => {
render(Harness);
const trigger = screen.getByRole('button', { name: 'Open' });
expect(trigger).toHaveAttribute('aria-expanded', 'false');
expect(trigger).toHaveAttribute('aria-haspopup', 'dialog');
expect(trigger).toHaveAttribute('popovertarget');
expect(getContent()).toHaveAttribute('data-state', 'closed');
});
it('opens via the popover toggle and syncs aria-expanded + data-state', async () => {
render(Harness);
const trigger = screen.getByRole('button', { name: 'Open' });
// jsdom does not auto-invoke popovertarget; call the API the browser would.
getContent().showPopover();
await Promise.resolve();
expect(getContent()).toHaveAttribute('data-state', 'open');
expect(trigger).toHaveAttribute('aria-expanded', 'true');
});
it('opens when the parent sets open=true (state -> browser)', async () => {
render(Harness, { open: true });
await Promise.resolve();
expect(getContent()).toHaveAttribute('data-state', 'open');
});
it('close() hides the popover and resets aria-expanded', async () => {
render(Harness, { open: true });
await Promise.resolve();
const trigger = screen.getByRole('button', { name: 'Open' });
await fireEvent.click(screen.getByTestId('close'));
expect(getContent()).toHaveAttribute('data-state', 'closed');
expect(trigger).toHaveAttribute('aria-expanded', 'false');
});
});
@@ -0,0 +1,21 @@
<!--
Component: PopoverHarness
Test-only fixture: renders Popover with a button trigger and simple content
exposing the close() callback.
-->
<script lang="ts">
import Popover from './Popover.svelte';
let { open = $bindable(false) }: { open?: boolean } = $props();
</script>
<Popover bind:open>
{#snippet trigger(props)}
<button {...props}>Open</button>
{/snippet}
{#snippet children({ close })}
<div data-testid="content">
<button onclick={close} data-testid="close">Close</button>
</div>
{/snippet}
</Popover>
@@ -0,0 +1,119 @@
import {
type Align,
type Side,
computePosition,
} from './popover-position';
/**
* Build a DOMRect-like object (jsdom/node has no layout).
*/
function rect(x: number, y: number, width: number, height: number): DOMRect {
return {
x,
y,
width,
height,
top: y,
left: x,
right: x + width,
bottom: y + height,
toJSON: () => ({}),
} as DOMRect;
}
const viewport = { width: 1000, height: 800 };
const content = { width: 200, height: 100 };
function compute(side: Side, align: Align, sideOffset = 0, trigger = rect(400, 400, 100, 40)) {
return computePosition({ triggerRect: trigger, contentRect: content, viewport, side, align, sideOffset });
}
describe('computePosition', () => {
it('places below the trigger for side="bottom"', () => {
const r = compute('bottom', 'center');
expect(r.side).toBe('bottom');
expect(r.y).toBe(440); // trigger.bottom (400+40)
});
it('places above the trigger for side="top"', () => {
const r = compute('top', 'center');
expect(r.side).toBe('top');
expect(r.y).toBe(300); // trigger.top (400) - content.height (100)
});
it('applies sideOffset on the main axis', () => {
const r = compute('bottom', 'center', 8);
expect(r.y).toBe(448);
});
it('aligns center on the cross axis (vertical side)', () => {
const r = compute('bottom', 'center');
// trigger center x = 450; content half = 100 -> 350
expect(r.x).toBe(350);
});
it('aligns start and end on the cross axis (vertical side)', () => {
expect(compute('bottom', 'start').x).toBe(400); // trigger.left
expect(compute('bottom', 'end').x).toBe(300); // trigger.right(500) - content.width(200)
});
it('places left/right with vertical cross-axis alignment', () => {
const right = compute('right', 'start');
expect(right.side).toBe('right');
expect(right.x).toBe(500); // trigger.right
expect(right.y).toBe(400); // trigger.top (align start)
const left = compute('left', 'center');
expect(left.side).toBe('left');
expect(left.x).toBe(200); // trigger.left(400) - content.width(200)
});
it('flips top->bottom when there is no room above', () => {
const nearTop = rect(400, 20, 100, 40); // only 20px above, content needs 100
const r = computePosition({
triggerRect: nearTop,
contentRect: content,
viewport,
side: 'top',
align: 'center',
sideOffset: 0,
});
expect(r.side).toBe('bottom');
expect(r.y).toBe(60); // nearTop.bottom
});
it('does NOT flip when neither side fits (keeps requested side)', () => {
const tall = { width: 200, height: 700 };
const r = computePosition({
triggerRect: rect(400, 400, 100, 40),
contentRect: tall,
viewport,
side: 'top',
align: 'center',
sideOffset: 0,
});
expect(r.side).toBe('top');
});
it('shifts on the cross axis to stay within the viewport', () => {
const nearRight = rect(950, 400, 40, 40); // center x ~970, content 200 would overflow right
const r = computePosition({
triggerRect: nearRight,
contentRect: content,
viewport,
side: 'bottom',
align: 'center',
sideOffset: 0,
});
expect(r.x).toBe(800); // clamped to viewport.width(1000) - content.width(200)
const nearLeft = rect(10, 400, 40, 40);
const r2 = computePosition({
triggerRect: nearLeft,
contentRect: content,
viewport,
side: 'bottom',
align: 'center',
sideOffset: 0,
});
expect(r2.x).toBe(0); // clamped to 0
});
});
+149
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@@ -0,0 +1,149 @@
import { clampNumber } from '$shared/lib/utils';
/**
* Side of the trigger the content prefers to open toward.
*/
export type Side = 'top' | 'bottom' | 'left' | 'right';
/**
* Cross-axis alignment of the content relative to the trigger.
*/
export type Align = 'start' | 'center' | 'end';
/**
* Inputs for a single placement computation. All geometry is injected
* (no DOM reads) so the function stays pure and unit-testable.
*/
type ComputeArgs = {
/**
* Trigger bounding rect (viewport coordinates).
*/
triggerRect: DOMRect;
/**
* Measured content size.
*/
contentRect: { width: number; height: number };
/**
* Viewport size.
*/
viewport: { width: number; height: number };
/**
* Preferred side.
*/
side: Side;
/**
* Cross-axis alignment.
*/
align: Align;
/**
* Gap between trigger and content on the main axis.
*/
sideOffset: number;
};
/**
* Resolved placement: fixed-position coordinates plus the side actually used
* (may differ from the requested side after a flip).
*/
type ComputeResult = { x: number; y: number; side: Side };
const OPPOSITE: Record<Side, Side> = {
top: 'bottom',
bottom: 'top',
left: 'right',
right: 'left',
};
/**
* True for sides whose main axis is vertical (content sits above/below).
*/
function isVertical(side: Side): boolean {
return side === 'top' || side === 'bottom';
}
/**
* Main-axis coordinate (top for vertical sides, left for horizontal sides).
*/
function mainAxisCoord(side: Side, t: DOMRect, c: { width: number; height: number }, offset: number): number {
switch (side) {
case 'top':
return t.top - c.height - offset;
case 'bottom':
return t.bottom + offset;
case 'left':
return t.left - c.width - offset;
case 'right':
return t.right + offset;
}
}
/**
* Whether the content fits on the given side within the viewport.
*/
function fitsOnSide(
side: Side,
t: DOMRect,
c: { width: number; height: number },
v: { width: number; height: number },
offset: number,
): boolean {
const coord = mainAxisCoord(side, t, c, offset);
switch (side) {
case 'top':
return coord >= 0;
case 'left':
return coord >= 0;
case 'bottom':
return coord + c.height <= v.height;
case 'right':
return coord + c.width <= v.width;
}
}
/**
* Cross-axis coordinate for the requested alignment.
*/
function crossAxisCoord(side: Side, align: Align, t: DOMRect, c: { width: number; height: number }): number {
if (isVertical(side)) {
if (align === 'start') {
return t.left;
}
if (align === 'end') {
return t.right - c.width;
}
return t.left + t.width / 2 - c.width / 2;
}
if (align === 'start') {
return t.top;
}
if (align === 'end') {
return t.bottom - c.height;
}
return t.top + t.height / 2 - c.height / 2;
}
/**
* Compute an anchored placement with flip (to the opposite side when the
* preferred side doesn't fit but the opposite does) and shift (clamp the
* cross axis so the content stays within the viewport).
*/
export function computePosition(args: ComputeArgs): ComputeResult {
const { triggerRect: t, contentRect: c, viewport: v, align, sideOffset } = args;
let side = args.side;
if (!fitsOnSide(side, t, c, v, sideOffset) && fitsOnSide(OPPOSITE[side], t, c, v, sideOffset)) {
side = OPPOSITE[side];
}
let x: number;
let y: number;
if (isVertical(side)) {
y = mainAxisCoord(side, t, c, sideOffset);
x = clampNumber(crossAxisCoord(side, align, t, c), 0, Math.max(0, v.width - c.width));
} else {
x = mainAxisCoord(side, t, c, sideOffset);
y = clampNumber(crossAxisCoord(side, align, t, c), 0, Math.max(0, v.height - c.height));
}
return { x, y, side };
}
+1 -3
View File
@@ -10,7 +10,7 @@ const { Story } = defineMeta({
docs: {
description: {
component:
'Styled bits-ui slider component with red accent (#ff3b30). Thumb is a 45° rotated square with hover/active scale animations.',
'Single-value slider (native, no bits-ui) with brand accent. Diamond thumb (45° rotated square) with hover/active scale. Supports pointer drag, click-to-seek, touch, and keyboard (arrows, Home/End, PageUp/Down).',
},
story: { inline: false }, // Render stories in iframe for state isolation
},
@@ -39,8 +39,6 @@ const { Story } = defineMeta({
<script lang="ts">
import type { ComponentProps } from 'svelte';
let value = $state(50);
let valueLow = $state(25);
let valueHigh = $state(75);
</script>
<Story
+197 -60
View File
@@ -1,13 +1,16 @@
<!--
Component: Slider
Single-value slider using bits-ui Slider primitive.
Single-value slider built on a native role="slider" element (no bits-ui).
Supports pointer drag, click-to-seek, touch, and full keyboard nav.
Swiss design: 1px track, diamond thumb (rotate-45), brand accent.
-->
<script lang="ts">
import {
type Orientation,
Slider,
} from 'bits-ui';
pointerToValue,
snapToStep,
} from './slider-math';
type Orientation = 'horizontal' | 'vertical';
interface Props {
/**
@@ -67,8 +70,122 @@ let {
class: className,
}: Props = $props();
/**
* PageUp/PageDown move by this multiple of `step`.
*/
const LARGE_STEP_MULTIPLIER = 10;
const isVertical = $derived(orientation === 'vertical');
/**
* Thumb/range offset as a clamped percentage of the track.
*/
const percent = $derived.by(() => {
if (max <= min) {
return 0;
}
return Math.min(Math.max(((value - min) / (max - min)) * 100, 0), 100);
});
let trackEl: HTMLElement | undefined = $state();
let thumbEl: HTMLElement | undefined = $state();
let dragging = $state(false);
/**
* Apply a candidate value: snap, clamp, store, and notify only on change.
*/
function commit(raw: number): void {
const next = snapToStep(raw, { min, max, step });
if (next !== value) {
value = next;
onValueChange?.(next);
}
}
/**
* Keep an externally-supplied value normalized to the step grid and range.
* Mirrors the bits-ui primitive's behavior so out-of-range or off-grid
* props don't desync the thumb position from aria-valuenow / the label.
* Converges in one pass: once snapped, the value equals its own snap.
*/
$effect(() => {
const normalized = snapToStep(value, { min, max, step });
if (normalized !== value) {
value = normalized;
onValueChange?.(normalized);
}
});
/**
* Resolve a pointer event to a value using the live track rect.
*/
function seek(event: PointerEvent): void {
if (!trackEl) {
return;
}
const rect = trackEl.getBoundingClientRect();
commit(pointerToValue(event, rect, { min, max, step, orientation }));
}
function handlePointerDown(event: PointerEvent): void {
if (disabled) {
return;
}
dragging = true;
thumbEl?.focus();
(event.currentTarget as HTMLElement).setPointerCapture?.(event.pointerId);
seek(event);
}
function handlePointerMove(event: PointerEvent): void {
if (!dragging || disabled) {
return;
}
seek(event);
}
function handlePointerUp(event: PointerEvent): void {
if (!dragging) {
return;
}
dragging = false;
(event.currentTarget as HTMLElement).releasePointerCapture?.(event.pointerId);
}
function handleKeyDown(event: KeyboardEvent): void {
if (disabled) {
return;
}
const large = step * LARGE_STEP_MULTIPLIER;
let next: number | undefined;
switch (event.key) {
case 'ArrowRight':
case 'ArrowUp':
next = value + step;
break;
case 'ArrowLeft':
case 'ArrowDown':
next = value - step;
break;
case 'PageUp':
next = value + large;
break;
case 'PageDown':
next = value - large;
break;
case 'Home':
next = min;
break;
case 'End':
next = max;
break;
default:
return;
}
event.preventDefault();
commit(next);
}
const labelClasses = `font-mono text-2xs tabular-nums shrink-0
text-subtle
group-hover:text-neutral-700 dark:group-hover:text-neutral-300
@@ -91,81 +208,101 @@ const thumbClasses = `block w-2.5 h-2.5 bg-brand
{format(value)}
</span>
<Slider.Root
type="single"
orientation="vertical"
bind:value
{min}
{max}
{step}
{disabled}
onValueChange={(v => onValueChange?.(v))}
<div
bind:this={trackEl}
role="presentation"
onpointerdown={handlePointerDown}
onpointermove={handlePointerMove}
onpointerup={handlePointerUp}
onpointercancel={handlePointerUp}
class="
relative flex flex-col items-center select-none touch-none
w-5 h-full grow cursor-row-resize
disabled:opacity-50 disabled:cursor-not-allowed
"
class:opacity-50={disabled}
class:cursor-not-allowed={disabled}
>
{#snippet children({ thumbItems })}
<span
class="
bg-neutral-200 dark:bg-neutral-800
relative grow w-px overflow-visible
group-hover:bg-neutral-300 dark:group-hover:bg-neutral-700
transition-colors
"
>
<span
class="
bg-neutral-200 dark:bg-neutral-800
relative grow w-px overflow-visible
group-hover:bg-neutral-300 dark:group-hover:bg-neutral-700
transition-colors
"
>
<Slider.Range class="absolute bg-brand w-full" />
</span>
class="absolute bottom-0 left-0 bg-brand w-full"
style="height: {percent}%"
></span>
</span>
{#each thumbItems as thumb (thumb)}
<Slider.Thumb
index={thumb.index}
class={thumbClasses}
aria-label="Value"
/>
{/each}
{/snippet}
</Slider.Root>
<span
role="slider"
bind:this={thumbEl}
tabindex={disabled ? -1 : 0}
aria-label="Value"
aria-orientation="vertical"
aria-valuemin={min}
aria-valuemax={max}
aria-valuenow={value}
aria-valuetext={String(format(value))}
aria-disabled={disabled ? 'true' : undefined}
data-active={dragging ? '' : undefined}
onkeydown={handleKeyDown}
class="{thumbClasses} absolute left-1/2 -translate-x-1/2 translate-y-1/2"
style="bottom: {percent}%"
></span>
</div>
</div>
{:else}
<div class="flex items-center gap-4 group w-full {className ?? ''}">
<Slider.Root
type="single"
orientation="horizontal"
bind:value
{min}
{max}
{step}
{disabled}
onValueChange={(v => onValueChange?.(v))}
<div
bind:this={trackEl}
role="presentation"
onpointerdown={handlePointerDown}
onpointermove={handlePointerMove}
onpointerup={handlePointerUp}
onpointercancel={handlePointerUp}
class="
relative flex items-center select-none touch-none
w-full h-5 cursor-col-resize
disabled:opacity-50 disabled:cursor-not-allowed
"
class:opacity-50={disabled}
class:cursor-not-allowed={disabled}
>
{#snippet children({ thumbItems })}
<span
class="
bg-neutral-200 dark:bg-neutral-800
relative grow h-px overflow-visible
group-hover:bg-neutral-300 dark:group-hover:bg-neutral-700
transition-colors
"
>
<span
class="
bg-neutral-200 dark:bg-neutral-800
relative grow h-px overflow-visible
group-hover:bg-neutral-300 dark:group-hover:bg-neutral-700
transition-colors
"
>
<Slider.Range class="absolute bg-brand h-full" />
</span>
class="absolute top-0 left-0 bg-brand h-full"
style="width: {percent}%"
></span>
</span>
{#each thumbItems as thumb (thumb)}
<Slider.Thumb
index={thumb.index}
class={thumbClasses}
aria-label="Value"
/>
{/each}
{/snippet}
</Slider.Root>
<span
role="slider"
bind:this={thumbEl}
tabindex={disabled ? -1 : 0}
aria-label="Value"
aria-orientation="horizontal"
aria-valuemin={min}
aria-valuemax={max}
aria-valuenow={value}
aria-valuetext={String(format(value))}
aria-disabled={disabled ? 'true' : undefined}
data-active={dragging ? '' : undefined}
onkeydown={handleKeyDown}
class="{thumbClasses} absolute top-1/2 -translate-y-1/2 -translate-x-1/2"
style="left: {percent}%"
></span>
</div>
<!-- Label: right of slider -->
<span class="{labelClasses} w-12 text-right">
+107
View File
@@ -1,4 +1,5 @@
import {
fireEvent,
render,
screen,
} from '@testing-library/svelte';
@@ -60,3 +61,109 @@ describe('Slider', () => {
});
});
});
describe('Keyboard', () => {
it('increments by step on ArrowRight / ArrowUp', async () => {
const onValueChange = vi.fn();
render(Slider, { value: 50, step: 5, onValueChange });
const thumb = screen.getByRole('slider');
await fireEvent.keyDown(thumb, { key: 'ArrowRight' });
expect(thumb).toHaveAttribute('aria-valuenow', '55');
expect(onValueChange).toHaveBeenCalledWith(55);
});
it('decrements by step on ArrowLeft / ArrowDown', async () => {
render(Slider, { value: 50, step: 5 });
const thumb = screen.getByRole('slider');
await fireEvent.keyDown(thumb, { key: 'ArrowDown' });
expect(thumb).toHaveAttribute('aria-valuenow', '45');
});
it('jumps to min on Home and max on End', async () => {
render(Slider, { value: 50, min: 10, max: 90 });
const thumb = screen.getByRole('slider');
await fireEvent.keyDown(thumb, { key: 'Home' });
expect(thumb).toHaveAttribute('aria-valuenow', '10');
await fireEvent.keyDown(thumb, { key: 'End' });
expect(thumb).toHaveAttribute('aria-valuenow', '90');
});
it('moves by step*10 on PageUp / PageDown', async () => {
render(Slider, { value: 50, step: 2 });
const thumb = screen.getByRole('slider');
await fireEvent.keyDown(thumb, { key: 'PageUp' });
expect(thumb).toHaveAttribute('aria-valuenow', '70');
await fireEvent.keyDown(thumb, { key: 'PageDown' });
expect(thumb).toHaveAttribute('aria-valuenow', '50');
});
it('clamps at the bounds', async () => {
render(Slider, { value: 98, max: 100, step: 5 });
const thumb = screen.getByRole('slider');
await fireEvent.keyDown(thumb, { key: 'End' });
expect(thumb).toHaveAttribute('aria-valuenow', '100');
});
it('does nothing when disabled', async () => {
const onValueChange = vi.fn();
render(Slider, { value: 50, disabled: true, onValueChange });
const thumb = screen.getByRole('slider');
await fireEvent.keyDown(thumb, { key: 'ArrowRight' });
expect(thumb).toHaveAttribute('aria-valuenow', '50');
expect(onValueChange).not.toHaveBeenCalled();
});
});
describe('Pointer', () => {
/**
* Force a deterministic track rect since jsdom has no layout.
*/
function mockTrackRect(container: HTMLElement) {
const track = container.querySelector('[role="presentation"]') as HTMLElement;
track.getBoundingClientRect = () =>
({ left: 0, right: 200, top: 0, bottom: 20, width: 200, height: 20 }) as DOMRect;
return track;
}
it('seeks to the clicked position (click-to-seek)', async () => {
const onValueChange = vi.fn();
const { container } = render(Slider, { value: 0, min: 0, max: 100, onValueChange });
const track = mockTrackRect(container);
await fireEvent.pointerDown(track, { clientX: 100, clientY: 10, pointerId: 1 });
expect(screen.getByRole('slider')).toHaveAttribute('aria-valuenow', '50');
expect(onValueChange).toHaveBeenCalledWith(50);
});
it('updates while dragging after pointerdown', async () => {
const { container } = render(Slider, { value: 0, min: 0, max: 100 });
const track = mockTrackRect(container);
await fireEvent.pointerDown(track, { clientX: 50, clientY: 10, pointerId: 1 });
await fireEvent.pointerMove(track, { clientX: 150, clientY: 10, pointerId: 1 });
expect(screen.getByRole('slider')).toHaveAttribute('aria-valuenow', '75');
});
it('ignores pointer when disabled', async () => {
const { container } = render(Slider, { value: 0, disabled: true });
const track = mockTrackRect(container);
await fireEvent.pointerDown(track, { clientX: 100, clientY: 10, pointerId: 1 });
expect(screen.getByRole('slider')).toHaveAttribute('aria-valuenow', '0');
});
it('focuses the thumb on pointerdown so arrow keys work immediately', async () => {
const { container } = render(Slider, { value: 0, min: 0, max: 100 });
const track = container.querySelector('[role="presentation"]') as HTMLElement;
track.getBoundingClientRect = () =>
({ left: 0, right: 200, top: 0, bottom: 20, width: 200, height: 20 }) as DOMRect;
await fireEvent.pointerDown(track, { clientX: 100, clientY: 10, pointerId: 1 });
expect(screen.getByRole('slider')).toBe(document.activeElement);
});
it('maps a vertical drag with the inverted axis (bottom→min, top→max)', async () => {
const { container } = render(Slider, { value: 0, min: 0, max: 100, orientation: 'vertical' });
const track = container.querySelector('[role="presentation"]') as HTMLElement;
track.getBoundingClientRect = () =>
({ left: 0, right: 20, top: 0, bottom: 200, width: 20, height: 200 }) as DOMRect;
await fireEvent.pointerDown(track, { clientX: 10, clientY: 50, pointerId: 1 });
expect(screen.getByRole('slider')).toHaveAttribute('aria-valuenow', '75');
});
});
+55
View File
@@ -0,0 +1,55 @@
import {
pointerToValue,
snapToStep,
} from './slider-math';
describe('snapToStep', () => {
it('snaps a raw value to the nearest step on the grid', () => {
expect(snapToStep(53, { min: 0, max: 100, step: 10 })).toBe(50);
expect(snapToStep(56, { min: 0, max: 100, step: 10 })).toBe(60);
});
it('clamps below min and above max', () => {
expect(snapToStep(-20, { min: 0, max: 100, step: 1 })).toBe(0);
expect(snapToStep(200, { min: 0, max: 100, step: 1 })).toBe(100);
});
it('respects a non-zero min when snapping', () => {
expect(snapToStep(13, { min: 10, max: 90, step: 5 })).toBe(15);
});
it('preserves fractional step precision', () => {
expect(snapToStep(1.34, { min: 0, max: 2, step: 0.05 })).toBe(1.35);
expect(snapToStep(0.31, { min: 0, max: 1, step: 0.1 })).toBe(0.3);
});
});
describe('pointerToValue', () => {
const rect = { left: 100, right: 300, top: 50, bottom: 250, width: 200, height: 200 } as DOMRect;
it('maps horizontal pointer position left→min, right→max', () => {
const opts = { min: 0, max: 100, step: 1, orientation: 'horizontal' as const };
expect(pointerToValue({ clientX: 100, clientY: 0 }, rect, opts)).toBe(0);
expect(pointerToValue({ clientX: 200, clientY: 0 }, rect, opts)).toBe(50);
expect(pointerToValue({ clientX: 300, clientY: 0 }, rect, opts)).toBe(100);
});
it('inverts vertical: bottom→min, top→max', () => {
const opts = { min: 0, max: 100, step: 1, orientation: 'vertical' as const };
expect(pointerToValue({ clientX: 0, clientY: 250 }, rect, opts)).toBe(0);
expect(pointerToValue({ clientX: 0, clientY: 150 }, rect, opts)).toBe(50);
expect(pointerToValue({ clientX: 0, clientY: 50 }, rect, opts)).toBe(100);
});
it('clamps when pointer is outside the track', () => {
const opts = { min: 0, max: 100, step: 1, orientation: 'horizontal' as const };
expect(pointerToValue({ clientX: 0, clientY: 0 }, rect, opts)).toBe(0);
expect(pointerToValue({ clientX: 9999, clientY: 0 }, rect, opts)).toBe(100);
});
it('returns min for a zero-size track without NaN', () => {
const zero = { left: 0, right: 0, top: 0, bottom: 0, width: 0, height: 0 } as DOMRect;
const opts = { min: 5, max: 95, step: 1, orientation: 'horizontal' as const };
expect(pointerToValue({ clientX: 0, clientY: 0 }, zero, opts)).toBe(5);
});
});
+59
View File
@@ -0,0 +1,59 @@
import {
clampNumber,
roundToStepPrecision,
} from '$shared/lib/utils';
/**
* Geometry/range options shared by the math helpers.
*/
type SliderMathOpts = {
/**
* Minimum value (inclusive)
*/
min: number;
/**
* Maximum value (inclusive)
*/
max: number;
/**
* Step increment
*/
step: number;
};
/**
* Snap a raw value onto the step grid, then clamp to [min, max].
*
* Snapping is anchored to `min` so non-zero ranges land on valid stops.
* `roundToStepPrecision` removes IEEE-754 drift from fractional steps.
*/
export function snapToStep(raw: number, { min, max, step }: SliderMathOpts): number {
if (step <= 0) {
return clampNumber(raw, min, max);
}
const snapped = min + Math.round((raw - min) / step) * step;
return clampNumber(roundToStepPrecision(snapped, step), min, max);
}
/**
* Convert a pointer coordinate into a slider value.
*
* Horizontal maps leftmin, rightmax. Vertical is inverted so that
* upmax, matching natural slider expectations. The DOMRect is passed in
* to keep this pure and unit-testable without layout.
*/
export function pointerToValue(
point: { clientX: number; clientY: number },
rect: DOMRect,
opts: SliderMathOpts & { orientation: 'horizontal' | 'vertical' },
): number {
const { min, max, orientation } = opts;
const size = orientation === 'vertical' ? rect.height : rect.width;
if (size <= 0) {
return snapToStep(min, opts);
}
const ratio = orientation === 'vertical'
? (rect.bottom - point.clientY) / size
: (point.clientX - rect.left) / size;
return snapToStep(min + clampNumber(ratio, 0, 1) * (max - min), opts);
}
+6
View File
@@ -104,6 +104,12 @@ export {
*/
default as PerspectivePlan,
} from './PerspectivePlan/PerspectivePlan.svelte';
export {
/**
* Anchored popover on the native Popover API
*/
default as Popover,
} from './Popover/Popover.svelte';
export {
/**
* Specialized input with search icon and clear state