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// For all DOM elements with [data-clipboard-target] or [data-clipboard-text], this copy-to-clipboard will work for them
// TODO: replace these with toast-style notifications
function onSuccess(btn) {
if (!btn.dataset.content) return;
$(btn).popup('destroy');
const oldContent = btn.dataset.content;
btn.dataset.content = btn.dataset.success;
$(btn).popup('show');
btn.dataset.content = oldContent;
}
function onError(btn) {
if (!btn.dataset.content) return;
const oldContent = btn.dataset.content;
$(btn).popup('destroy');
btn.dataset.content = btn.dataset.error;
$(btn).popup('show');
btn.dataset.content = oldContent;
}
/**
* Fallback to use if navigator.clipboard doesn't exist.
* Achieved via creating a temporary textarea element, selecting the text, and using document.execCommand.
*/
function fallbackCopyToClipboard(text) {
if (!document.execCommand) return false;
const tempTextArea = document.createElement('textarea');
tempTextArea.value = text;
// avoid scrolling
tempTextArea.style.top = 0;
tempTextArea.style.left = 0;
tempTextArea.style.position = 'fixed';
document.body.appendChild(tempTextArea);
tempTextArea.select();
// if unsecure (not https), there is no navigator.clipboard, but we can still use document.execCommand to copy to clipboard
const success = document.execCommand('copy');
document.body.removeChild(tempTextArea);
return success;
}
export default function initGlobalCopyToClipboardListener() {
document.addEventListener('click', async (e) => {
let target = e.target;
// in case <button data-clipboard-text><svg></button>, so we just search up to 3 levels for performance.
for (let i = 0; i < 3 && target; i++) {
let text;
if (target.dataset.clipboardText) {
text = target.dataset.clipboardText;
} else if (target.dataset.clipboardTarget) {
text = document.querySelector(target.dataset.clipboardTarget)?.value;
}
if (text) {
e.preventDefault();
try {
await navigator.clipboard.writeText(text);
onSuccess(target);
} catch {
if (fallbackCopyToClipboard(text)) {
onSuccess(target);
} else {
onError(target);
}
}
break;
}
target = target.parentElement;
}
});
}
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