23bd7b1211
* Add copy button to markdown code blocks Done mostly in JS because I think it's better not to try getting buttons past the markup sanitizer. * add svg module tests * fix sanitizer regexp * remove outdated comment * vertically center button in issue comments as well * add comment to css * fix undefined on view file line copy * combine animation less files * Update modules/markup/markdown/markdown.go Co-authored-by: wxiaoguang <wxiaoguang@gmail.com> * add test for different sizes * add cloneNode and add tests for it * use deep clone * remove useless optional chaining * remove the svg node cache * unify clipboard copy string and i18n * remove unused var * remove unused localization * minor css tweaks to the button * comment tweak * remove useless attribute Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
82 lines
2.5 KiB
JavaScript
82 lines
2.5 KiB
JavaScript
const {copy_success, copy_error} = window.config.i18n;
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function onSuccess(btn) {
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btn.setAttribute('data-variation', 'inverted tiny');
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$(btn).popup('destroy');
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const oldContent = btn.getAttribute('data-content');
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btn.setAttribute('data-content', copy_success);
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$(btn).popup('show');
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btn.setAttribute('data-content', oldContent || '');
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}
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function onError(btn) {
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btn.setAttribute('data-variation', 'inverted tiny');
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const oldContent = btn.getAttribute('data-content');
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$(btn).popup('destroy');
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btn.setAttribute('data-content', copy_error);
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$(btn).popup('show');
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btn.setAttribute('data-content', oldContent || '');
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}
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// Fallback to use if navigator.clipboard doesn't exist. Achieved via creating
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// a temporary textarea element, selecting the text, and using document.execCommand
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function fallbackCopyToClipboard(text) {
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if (!document.execCommand) return false;
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const tempTextArea = document.createElement('textarea');
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tempTextArea.value = text;
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// avoid scrolling
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tempTextArea.style.top = 0;
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tempTextArea.style.left = 0;
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tempTextArea.style.position = 'fixed';
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document.body.appendChild(tempTextArea);
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tempTextArea.select();
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// if unsecure (not https), there is no navigator.clipboard, but we can still
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// use document.execCommand to copy to clipboard
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const success = document.execCommand('copy');
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document.body.removeChild(tempTextArea);
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return success;
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}
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// For all DOM elements with [data-clipboard-target] or [data-clipboard-text],
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// this copy-to-clipboard will work for them
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export default function initGlobalCopyToClipboardListener() {
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document.addEventListener('click', (e) => {
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let target = e.target;
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// in case <button data-clipboard-text><svg></button>, so we just search
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// up to 3 levels for performance
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for (let i = 0; i < 3 && target; i++) {
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let text;
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if (target.dataset.clipboardText) {
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text = target.dataset.clipboardText;
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} else if (target.dataset.clipboardTarget) {
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text = document.querySelector(target.dataset.clipboardTarget)?.value;
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}
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if (text) {
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e.preventDefault();
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(async() => {
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try {
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await navigator.clipboard.writeText(text);
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onSuccess(target);
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} catch {
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if (fallbackCopyToClipboard(text)) {
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onSuccess(target);
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} else {
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onError(target);
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}
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}
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})();
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break;
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}
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target = target.parentElement;
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}
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});
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}
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