language-learning-app/frontend/src/routes/app/articles/[article_id]/TranslationPanel.svelte
wilson 13911331a3 feat: Add word-level translation panel to article page
- Add DeepL integration for word translation
- Parse article body into sentences and tokens
- Highlight active sentence and selected word
- Show translation in a sticky panel or mobile drawer
- Refactor audio timing and body parsing logic
- Enable SvelteKit remote functions and async compiler options
- Add dependencies: deepl-node, valibot
2026-03-31 07:21:20 +01:00

161 lines
3.8 KiB
Svelte

<script lang="ts">
import type { SentenceToken } from './Transcript';
let {
selectedSentenceToken = null,
translating = false,
translatedText = '',
closePanel
}: {
selectedSentenceToken?: SentenceToken | null;
translating?: boolean;
translatedText: string | null;
closePanel: () => void;
} = $props();
</script>
<!-- Translation panel (desktop: sticky sidebar; mobile: bottom drawer) -->
<aside
class="translation-panel"
class:is-open={selectedSentenceToken !== null}
aria-label="Word translation"
>
{#if selectedSentenceToken}
<div class="panel-header">
<p class="panel-word">{selectedSentenceToken.text}</p>
<button class="btn btn-ghost panel-close" onclick={closePanel} aria-label="Close panel">
</button>
</div>
{#if translating}
<div class="panel-loading">
<div class="spinner" aria-hidden="true"></div>
<span>Translating…</span>
</div>
{:else if translatedText}
<p class="panel-translation">{translatedText}</p>
<button class="btn btn-secondary panel-save" disabled aria-disabled="true">
Add to flashcard
</button>
{:else}
<p class="panel-error">Could not load translation.</p>
{/if}
{:else}
<p class="panel-hint">Tap any word for a translation</p>
{/if}
</aside>
<style>
@keyframes spin {
to {
transform: rotate(360deg);
}
}
.panel-header {
display: flex;
align-items: flex-start;
justify-content: space-between;
gap: var(--space-2);
margin-bottom: var(--space-4);
}
.panel-word {
font-family: var(--font-display);
font-size: var(--text-headline-md);
font-weight: var(--weight-semibold);
line-height: var(--leading-snug);
color: var(--color-on-surface);
}
.panel-close {
flex-shrink: 0;
color: var(--color-on-surface-variant);
font-size: var(--text-body-lg);
line-height: 1;
}
.panel-translation {
font-family: var(--font-body);
font-size: var(--text-body-lg);
line-height: var(--leading-relaxed);
color: var(--color-on-surface-variant);
font-style: italic;
margin-bottom: var(--space-4);
}
.panel-save {
width: 100%;
padding-block: var(--space-2);
opacity: 0.6;
}
.panel-hint {
font-family: var(--font-label);
font-size: var(--text-body-sm);
color: var(--color-on-surface-variant);
text-align: center;
padding: var(--space-4) 0;
}
.panel-error {
font-family: var(--font-label);
font-size: var(--text-body-sm);
color: var(--color-on-surface-variant);
}
.panel-loading {
display: flex;
align-items: center;
gap: var(--space-3);
font-family: var(--font-label);
font-size: var(--text-body-sm);
color: var(--color-on-surface-variant);
}
.spinner {
flex-shrink: 0;
width: 1rem;
height: 1rem;
border: 2px solid var(--color-outline-variant);
border-top-color: var(--color-primary);
border-radius: 50%;
animation: spin 0.9s linear infinite;
}
/* --- Translation panel: Desktop (sticky sidebar) --- */
@media (min-width: 768px) {
.translation-panel {
position: sticky;
top: var(--space-6);
background-color: var(--color-surface-container-lowest);
border-radius: var(--radius-xl);
padding: var(--space-5);
min-height: 16rem;
box-shadow: var(--shadow-tonal-sm);
}
}
/* --- Translation panel: Mobile (bottom drawer) --- */
@media (max-width: 767px) {
.translation-panel {
position: fixed;
bottom: 0;
left: 0;
right: 0;
z-index: 300;
background-color: var(--color-surface-container-lowest);
border-radius: var(--radius-xl) var(--radius-xl) 0 0;
padding: var(--space-5) var(--space-5) calc(var(--space-5) + env(safe-area-inset-bottom));
max-height: 55vh;
overflow-y: auto;
transform: translateY(100%);
transition: transform var(--duration-slow) var(--ease-standard);
box-shadow: 0 -8px 32px color-mix(in srgb, var(--color-on-surface) 8%, transparent);
}
.translation-panel.is-open {
transform: translateY(0);
}
}
</style>