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WRNexusJS/packages/ui/components/BackToTop.wrn
T
ClintchizandClaude Opus 5.5 1bed8e4b74 feat(ui): component redesign pass and fixes, release ui 0.8.87
Redesign
- Shared field foundation rules (duplicated across 15 form components and
  emitted globally) are now identical everywhere, so later copies no longer
  silently override earlier redesigns.
- Drawn checkbox and radio controls, white switch thumbs (the thumb was the
  text colour, a black blob in light mode), recessed field wells, keycap
  actions in Modal, Drawer, Popover, Toaster, Pagination, Stepper, DataTable.
- Menus (Dropdown, ContextMenu, Popover, Select dropdown, Navbar panels) share
  one flat raised panel with neutral hover rows and mono section labels.
- Alerts with an accent rail and icon chip; card headers without the grey
  band; accordion, collapse, list, list group, timeline, stats, metrics,
  chat, skeleton, avatar group, clipboard, splitter, section, sidebar,
  navbar and upload progress restyled.
- Chart rebuilt: nice y-axis ticks, gridlines, rounded bars, line and area
  modes, hover tooltips, hidden series leave the scale.

Fixes
- Checkbox and radio labels toggle their input again (empty for="" broke it).
- TimePicker kept every clicked time pressed; only the chosen hour and
  minute are pressed now, and nothing is pressed before a value exists.
- ColorPicker hex readout now follows the picked colour.
- Disabled FileInput no longer shows the native file-input text.
- Date and time panels float instead of pushing content.
- ContextMenu opened at the pointer closes on scroll.
- Drawer left/top/bottom placements slide from their own edge again.
- Image-only Card no longer renders an empty body strip.
- Timeline supports item.time, current/upcoming states, sizes and
  compact/alternate variants; showcase demos use distinct variants.
- ChatBubble: delivery receipts (sending/sent/delivered/read/failed/error)
  and meta aligned to its bubble.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-30 16:18:13 +05:30

342 lines
9.5 KiB
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component BackToTop {
props {
threshold: number = 500
label: string = "Back to top"
ariaLabel: string = "Scroll back to top"
icon: string = "icon-[lucide--arrow-up]"
position: string = "right"
offset: string = "md"
behavior: string = "smooth"
showProgress: boolean = false
showLabel: boolean = false
alwaysVisible: boolean = false
size: string = "default"
color: string = "primary"
variant: string = "solid"
shape: string = "round"
class: string = ""
}
state visible: boolean = false
state progress: number = 0
view {
<button
{...attrs}
data-ui-component="BackToTop"
type="button"
aria-label='{ariaLabel}'
title='{label}'
data-position='{position}'
data-offset='{offset}'
data-size='{size}'
data-color='{color}'
data-variant='{variant}'
data-shape='{shape}'
data-show-label='{showLabel ? "true" : "false"}'
data-progress='{showProgress ? "true" : "false"}'
data-show='{alwaysVisible || visible}'
hidden='{!alwaysVisible && !visible}'
class='wrn-back-to-top {class}'
style='--wrn-back-to-top-progress: {progress}%;'
@window:scroll='visible = window.scrollY >= threshold; progress = Math.min(100, Math.max(0, Math.round((window.scrollY / Math.max(1, document.documentElement.scrollHeight - window.innerHeight)) * 100)))'
@click='window.scrollTo({ top: 0, behavior: behavior })'
>
{#if showProgress}
<span class="wrn-back-to-top__progress" aria-hidden="true"></span>
{/if}
<span class="wrn-back-to-top__surface">
<span class='wrn-back-to-top__icon {icon}' aria-hidden="true"></span>
{#if showLabel}
<span class="wrn-back-to-top__label">{label}</span>
{/if}
</span>
<span class="wrn-back-to-top__sr">{label}</span>
</button>
}
style {
.wrn-back-to-top[hidden] {
display: none;
}
.wrn-back-to-top {
--back-accent: var(--wrn-color-primary);
--back-accent-hover: var(--wrn-color-primary-hover);
--back-accent-soft: var(--wrn-color-primary-soft);
--back-contrast: var(--wrn-color-primary-contrast);
position: fixed;
z-index: 70;
display: inline-flex;
align-items: center;
justify-content: center;
min-width: 3rem;
min-height: 3rem;
padding: 0;
color: var(--back-contrast);
background: transparent;
border: 0;
border-radius: 999px;
cursor: pointer;
filter: drop-shadow(0 14px 30px color-mix(in srgb, black 22%, transparent));
transition:
transform 180ms ease,
opacity 180ms ease,
filter 180ms ease;
}
.wrn-back-to-top[data-color="secondary"] {
--back-accent: var(--wrn-color-secondary);
--back-accent-hover: var(--wrn-color-secondary-hover);
--back-accent-soft: var(--wrn-color-secondary-soft);
--back-contrast: var(--wrn-color-secondary-contrast);
}
.wrn-back-to-top[data-color="info"] {
--back-accent: var(--wrn-color-info);
--back-accent-hover: var(--wrn-color-info-hover);
--back-accent-soft: var(--wrn-color-info-soft);
--back-contrast: var(--wrn-color-info-contrast);
}
.wrn-back-to-top[data-color="success"] {
--back-accent: var(--wrn-color-success);
--back-accent-hover: var(--wrn-color-success-hover);
--back-accent-soft: var(--wrn-color-success-soft);
--back-contrast: var(--wrn-color-success-contrast);
}
.wrn-back-to-top[data-color="warning"] {
--back-accent: var(--wrn-color-warning);
--back-accent-hover: var(--wrn-color-warning-hover);
--back-accent-soft: var(--wrn-color-warning-soft);
--back-contrast: var(--wrn-color-warning-contrast);
}
.wrn-back-to-top[data-color="danger"] {
--back-accent: var(--wrn-color-danger);
--back-accent-hover: var(--wrn-color-danger-hover);
--back-accent-soft: var(--wrn-color-danger-soft);
--back-contrast: var(--wrn-color-danger-contrast);
}
.wrn-back-to-top[data-position="right"] {
right: max(1.5rem, env(safe-area-inset-right));
}
.wrn-back-to-top[data-position="left"] {
left: max(1.5rem, env(safe-area-inset-left));
}
.wrn-back-to-top[data-position="center"] {
left: 50%;
transform: translateX(-50%);
}
.wrn-back-to-top[data-position="center"]:hover {
transform: translateX(-50%) translateY(-3px);
}
.wrn-back-to-top[data-offset="sm"] {
bottom: 1rem;
}
.wrn-back-to-top[data-offset="md"] {
bottom: 1.5rem;
}
.wrn-back-to-top[data-offset="lg"] {
bottom: 2rem;
}
.wrn-back-to-top[data-offset="xl"] {
bottom: 3rem;
}
.wrn-back-to-top[data-size="sm"] {
min-width: 2.5rem;
min-height: 2.5rem;
}
.wrn-back-to-top[data-size="lg"] {
min-width: 3.5rem;
min-height: 3.5rem;
}
.wrn-back-to-top[data-show-label="true"] {
min-width: 0;
}
.wrn-back-to-top:hover {
transform: translateY(-3px);
filter: drop-shadow(0 18px 36px color-mix(in srgb, var(--back-accent) 24%, transparent));
}
.wrn-back-to-top:active {
transform: translateY(-1px) scale(0.98);
}
.wrn-back-to-top__surface {
position: relative;
z-index: 2;
display: inline-flex;
align-items: center;
justify-content: center;
gap: 0.55rem;
min-width: 3rem;
min-height: 3rem;
padding: 0.75rem;
color: var(--back-contrast);
background:
var(--back-accent);
border: 1px solid color-mix(in srgb, white 18%, transparent);
border-radius: inherit;
box-shadow:
0 1px 0 color-mix(in srgb, white 20%, transparent) inset,
0 10px 24px color-mix(in srgb, black 18%, transparent);
backdrop-filter: blur(12px);
transition:
background-color 160ms ease,
border-color 160ms ease,
color 160ms ease;
}
.wrn-back-to-top[data-size="sm"] .wrn-back-to-top__surface {
min-width: 2.5rem;
min-height: 2.5rem;
padding: 0.58rem;
}
.wrn-back-to-top[data-size="lg"] .wrn-back-to-top__surface {
min-width: 3.5rem;
min-height: 3.5rem;
padding: 0.9rem;
}
.wrn-back-to-top[data-show-label="true"] .wrn-back-to-top__surface {
min-width: 0;
padding-inline: 1rem;
}
.wrn-back-to-top[data-variant="outline"] .wrn-back-to-top__surface {
color: var(--back-accent);
background: color-mix(in srgb, var(--wrn-color-surface-raised) 88%, transparent);
border-color: color-mix(in srgb, var(--back-accent) 46%, var(--wrn-color-border));
}
.wrn-back-to-top[data-variant="soft"] .wrn-back-to-top__surface {
color: var(--back-accent);
background: color-mix(in srgb, var(--back-accent-soft) 88%, var(--wrn-color-surface-raised));
border-color: color-mix(in srgb, var(--back-accent) 22%, var(--wrn-color-border));
}
.wrn-back-to-top[data-variant="ghost"] .wrn-back-to-top__surface {
color: var(--back-accent);
background: color-mix(in srgb, var(--wrn-color-surface-raised) 68%, transparent);
border-color: transparent;
box-shadow: none;
}
.wrn-back-to-top[data-variant="minimal"] .wrn-back-to-top__surface {
color: var(--back-accent);
background: transparent;
border-color: transparent;
box-shadow: none;
backdrop-filter: none;
}
.wrn-back-to-top[data-shape="rounded"] {
border-radius: 0.9rem;
}
.wrn-back-to-top[data-shape="pill"] {
border-radius: 999px;
}
.wrn-back-to-top__progress {
position: absolute;
inset: -0.22rem;
z-index: 1;
border-radius: inherit;
background: conic-gradient(
var(--back-accent) var(--wrn-back-to-top-progress),
color-mix(in srgb, var(--wrn-color-border) 72%, transparent) var(--wrn-back-to-top-progress)
);
mask: radial-gradient(farthest-side, transparent calc(100% - 0.18rem), #000 calc(100% - 0.17rem));
-webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 0.18rem), #000 calc(100% - 0.17rem));
pointer-events: none;
}
.wrn-back-to-top__icon {
width: 1.1rem;
height: 1.1rem;
flex: 0 0 auto;
}
.wrn-back-to-top[data-size="sm"] .wrn-back-to-top__icon {
width: 0.95rem;
height: 0.95rem;
}
.wrn-back-to-top[data-size="lg"] .wrn-back-to-top__icon {
width: 1.25rem;
height: 1.25rem;
}
.wrn-back-to-top__label {
white-space: nowrap;
font-size: 0.78rem;
font-weight: 700;
line-height: 1;
}
.wrn-back-to-top__sr {
position: absolute;
width: 1px;
height: 1px;
padding: 0;
margin: -1px;
overflow: hidden;
clip: rect(0, 0, 0, 0);
white-space: nowrap;
border: 0;
}
.wrn-back-to-top:focus-visible {
outline: 2px solid var(--wrn-color-focus);
outline-offset: 4px;
}
@media (max-width: 639px) {
.wrn-back-to-top[data-position="right"] {
right: 1rem;
}
.wrn-back-to-top[data-position="left"] {
left: 1rem;
}
.wrn-back-to-top[data-offset="lg"],
.wrn-back-to-top[data-offset="xl"] {
bottom: 1.25rem;
}
}
@media (prefers-reduced-motion: reduce) {
.wrn-back-to-top,
.wrn-back-to-top__surface {
transition: none;
}
.wrn-back-to-top:hover,
.wrn-back-to-top[data-position="center"]:hover {
transform: none;
}
}
}
}