113 lines
3.1 KiB
Svelte
113 lines
3.1 KiB
Svelte
<!--
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ChartContainer.svelte — Consistent chart layout wrapper
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Provides a container with:
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- Consistent padding and spacing
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- Loading overlay with spinner
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- Fade transitions
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- Responsive min-height calculation
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- Slot for chart content
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Usage:
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<ChartContainer loading={!chartsReady} chartCount={3}>
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{#each charts as chart}
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<EChart option={chart.option} />
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{/each}
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</ChartContainer>
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-->
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<script lang="ts">
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import { fade } from 'svelte/transition';
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import type { Snippet } from 'svelte';
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// ─── Props ──────────────────────────────────────────────────────────────────
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interface Props {
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/** Whether the charts are still loading */
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loading?: boolean;
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/** Number of charts being rendered (used for min-height calculation) */
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chartCount?: number;
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/** Height per individual chart in pixels (default: 300) */
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chartHeight?: number;
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/** Extra vertical padding in pixels added to the total min-height (default: 2) */
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extraPadding?: number;
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/** Optional CSS class for the outer wrapper */
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class?: string;
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/** Slot content (charts go here) */
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children?: Snippet;
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}
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let {
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loading = true,
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chartCount = 1,
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chartHeight = 300,
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extraPadding = 2,
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class: className = '',
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children
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}: Props = $props();
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// ─── Computed ───────────────────────────────────────────────────────────────
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let minHeight = $derived(chartHeight * chartCount + extraPadding);
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</script>
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<div class="chart-container relative {className}" style:min-height="{minHeight}px">
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<!-- Chart content area -->
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<div class="chart-content" in:fade={{ duration: 300 }} out:fade={{ duration: 300 }}>
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{#if children}
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{@render children()}
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{/if}
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</div>
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<!-- Loading overlay -->
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<div
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class="loading-overlay absolute inset-0 z-30 flex items-center justify-center rounded-lg bg-accent transition-opacity duration-300"
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class:pointer-events-none={!loading}
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class:opacity-0={!loading}
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class:opacity-100={loading}
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>
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<div class="flex flex-col items-center gap-3">
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<svg
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class="lucide lucide-loader-circle animate-spin text-muted-foreground"
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xmlns="http://www.w3.org/2000/svg"
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width="40"
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height="40"
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viewBox="0 0 24 24"
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fill="none"
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stroke="currentColor"
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stroke-width="2"
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stroke-linecap="round"
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stroke-linejoin="round"
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aria-hidden="true"
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>
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<path d="M21 12a9 9 0 1 1-6.219-8.56" />
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</svg>
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<span class="sr-only">Loading charts...</span>
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</div>
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</div>
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</div>
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<style>
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.chart-container {
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/* Negative horizontal margin on mobile to use full width, reset on md+ */
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margin-left: -1.5rem;
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margin-right: -1.5rem;
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}
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@media (min-width: 768px) {
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.chart-container {
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margin-left: 0;
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margin-right: 0;
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}
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}
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.chart-content {
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width: 100%;
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}
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/* Smooth transition for the loading overlay */
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.loading-overlay {
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will-change: opacity;
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}
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</style>
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