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feat(code): add download button for code blocks and related functionality (#706)

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Cell
2026-03-02 17:34:57 +08:00
committed by GitHub
parent 83a658ba25
commit 6196cd5edf
20 changed files with 58 additions and 1 deletions
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assets/js/theme.js
+28
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@@ -459,6 +459,33 @@ class FixIt {
}, false);
}
initDownloadCode(codeBlock, codePreEl) {
const downloadBtn = codeBlock.querySelector('.code-header .download-btn');
if (!downloadBtn) return;
downloadBtn.addEventListener('click', () => {
const $codeHeader = codeBlock.querySelector('.code-header');
const fileNameFromTitle = $codeHeader?.querySelector('.code-title')?.dataset.name?.trim();
const language = Array.from($codeHeader?.classList || []).find((className) => className.startsWith('language-'))?.replace('language-', '');
const fallbackName = language && language !== 'fallback' ? `code.${language}` : 'code.txt';
const fileName = (fileNameFromTitle || fallbackName).replace(/[\\/:*?"<>|\r\n]+/g, '-');
const blob = new Blob([codePreEl.innerText], { type: 'text/plain;charset=utf-8' });
const url = URL.createObjectURL(blob);
const link = document.createElement('a');
link.href = url;
link.download = fileName || fallbackName;
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
URL.revokeObjectURL(url);
downloadBtn.toggleAttribute('data-downloaded', true);
downloadBtn.classList.toggle('fa-spin', true);
setTimeout(() => {
downloadBtn.toggleAttribute('data-downloaded', false);
downloadBtn.classList.toggle('fa-spin', false);
}, 300);
}, false);
}
/**
* init code wrapper
*/
@@ -477,6 +504,7 @@ class FixIt {
if ($codeBlock.dataset.mode === 'classic') {
const $codeHeader = $codeBlock.querySelector('.code-header');
if (!$codeHeader) return;
this.initDownloadCode($codeBlock, $codePreEl);
// code title
$codeHeader.querySelector('.code-title').addEventListener('click', () => {
$codeBlock.classList.toggle('is-collapsed');