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🎨 Palette: Add Loading State to Generate Button #5

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🎨 Palette: Add Loading State to Generate Button #5

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5 changes: 4 additions & 1 deletion web_app/static/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -116,7 +116,10 @@ <h2 id="contentHeading">Lyrics</h2>
</div>
</div>

<button id="generateBtn" class="primary-btn">Generate Poster</button>
<button id="generateBtn" class="primary-btn">
Generate Poster
<span class="spinner"></span>
</button>
</div>
</div>

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11 changes: 7 additions & 4 deletions web_app/static/script.js
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Original file line number Diff line number Diff line change
Expand Up @@ -613,7 +613,8 @@ function handleLyricLineClick(lineNumber) {
async function generatePoster() {
if (!currentMetadata) return;

loadingOverlay.style.display = 'flex';
generateBtn.classList.add('loading');
generateBtn.disabled = true;

const indexingToggle = document.getElementById('indexingToggle');
const accentToggle = document.getElementById('accentToggle');
Expand All @@ -635,7 +636,8 @@ async function generatePoster() {
const end = endVal;

if (isNaN(start) || isNaN(end) || start >= end) {
loadingOverlay.style.display = 'none';
generateBtn.classList.remove('loading');
generateBtn.disabled = false;
showToast("Please enter a valid range (Start must be less than End).", "error");
return;
}
Expand Down Expand Up @@ -669,13 +671,14 @@ async function generatePoster() {
posterContainer.innerHTML = '';
posterContainer.appendChild(img);
showDownloadButton(imageUrl, data.filename);
loadingOverlay.style.display = 'none';
};

} catch (error) {
console.error("Generation failed", error);
showToast(`Error: ${error.message}`, "error");
loadingOverlay.style.display = 'none';
} finally {
generateBtn.classList.remove('loading');
generateBtn.disabled = false;
}
}

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26 changes: 26 additions & 0 deletions web_app/static/style.css
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Original file line number Diff line number Diff line change
Expand Up @@ -140,6 +140,7 @@ header p {
/* Buttons */
.primary-btn,
.secondary-btn {
position: relative; /* For spinner positioning */
display: inline-flex;
align-items: center;
justify-content: center;
Expand All @@ -166,6 +167,31 @@ header p {
transform: translateY(-1px);
}

.primary-btn.loading {
cursor: wait;
color: transparent;
pointer-events: none;
}

.primary-btn .spinner {
display: none;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
width: 20px;
height: 20px;
margin: 0;
border: 2px solid #1a1a1f;
border-top-color: transparent;
border-radius: 50%;
animation: spin 0.6s linear infinite;
}

.primary-btn.loading .spinner {
display: block;
}

.secondary-btn {
background: transparent;
border-color: var(--border-color);
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