80 lines
2.3 KiB
JavaScript
80 lines
2.3 KiB
JavaScript
// For all DOM elements with [data-clipboard-target] or [data-clipboard-text], this copy-to-clipboard will work for them
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// TODO: replace these with toast-style notifications
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function onSuccess(btn) {
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if (!btn.dataset.content) return;
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$(btn).popup('destroy');
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const oldContent = btn.dataset.content;
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btn.dataset.content = btn.dataset.success;
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$(btn).popup('show');
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btn.dataset.content = oldContent;
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}
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function onError(btn) {
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if (!btn.dataset.content) return;
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const oldContent = btn.dataset.content;
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$(btn).popup('destroy');
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btn.dataset.content = btn.dataset.error;
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$(btn).popup('show');
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btn.dataset.content = oldContent;
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}
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/**
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* Fallback to use if navigator.clipboard doesn't exist.
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* Achieved via creating a temporary textarea element, selecting the text, and using document.execCommand.
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*/
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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 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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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 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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