@primer/view-components
Version:
ViewComponents for the Primer Design System
59 lines (58 loc) • 2.15 kB
JavaScript
import '@github/clipboard-copy-element';
const CLIPBOARD_COPY_TIMER_DURATION = 2000;
function showSVG(svg) {
svg.style.display = 'inline-block';
}
function hideSVG(svg) {
svg.style.display = 'none';
}
// Toggle a copy button.
function showCopy(button) {
const [copyIcon, checkIcon] = button.querySelectorAll('.octicon');
if (!copyIcon || !checkIcon)
return;
showSVG(copyIcon);
hideSVG(checkIcon);
}
// Toggle a copy button.
function showCheck(button) {
const [copyIcon, checkIcon] = button.querySelectorAll('.octicon');
if (!copyIcon || !checkIcon)
return;
hideSVG(copyIcon);
showSVG(checkIcon);
}
const clipboardCopyElementTimers = new WeakMap();
document.addEventListener('clipboard-copy', ({ target }) => {
if (!(target instanceof HTMLElement))
return;
if (!target.hasAttribute('data-view-component'))
return;
const currentTimeout = clipboardCopyElementTimers.get(target);
const clipboardCopyLiveRegion = target.parentNode?.querySelector('[data-clipboard-copy-feedback]');
const copiedAnnouncement = 'Copied!';
if (currentTimeout) {
clearTimeout(currentTimeout);
clipboardCopyElementTimers.delete(target);
}
else {
showCheck(target);
if (clipboardCopyLiveRegion) {
if (clipboardCopyLiveRegion.textContent === copiedAnnouncement) {
/* This is a hack due to the way the aria live API works.
A screen reader will not read a live region again
if the text is the same. Adding a space character tells
the browser that the live region has updated,
which will cause it to read again, but with no audible difference. */
clipboardCopyLiveRegion.textContent = `${copiedAnnouncement}\u00A0`;
}
else {
clipboardCopyLiveRegion.textContent = copiedAnnouncement;
}
}
}
clipboardCopyElementTimers.set(target, setTimeout(() => {
showCopy(target);
clipboardCopyElementTimers.delete(target);
}, CLIPBOARD_COPY_TIMER_DURATION));
});