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Use clippie module to copy to clipboard (#23801)

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Externalize clipboard copying to the
[clippie](https://github.com/silverwind/clippie) module which I feel I
can maintain outside this repo for shared benefit with my other
projects.

The module is feature-equivalent to the previous code and has one
improvement where it sets `aria-hidden` on the fallback textarea,
preventing screen readers from picking it up. Also it support `Array` of
`content` as well to copy multiple items at once, in case it's ever
needed.
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silverwind 2023-04-02 11:25:36 +02:00 • committed by GitHub
parent fcb9ef8788
commit f5593d08dc
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5 changed files with 13 additions and 45 deletions
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43
web_src/js/features/clipboard.js
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@ -1,48 +1,9 @@
import {showTemporaryTooltip} from '../modules/tippy.js';
import {toAbsoluteUrl} from '../utils.js';
import {clippie} from 'clippie';
const {copy_success, copy_error} = window.config.i18n;
export async function copyToClipboard(content) {
if (content instanceof Blob) {
const item = new ClipboardItem({[content.type]: content});
await navigator.clipboard.write([item]);
} else { // text
try {
await navigator.clipboard.writeText(content);
} catch {
return fallbackCopyToClipboard(content);
}
}
return true;
}
// 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;
}
// For all DOM elements with [data-clipboard-target] or [data-clipboard-text],
// this copy-to-clipboard will work for them
export function initGlobalCopyToClipboardListener() {
@ -61,7 +22,7 @@ export function initGlobalCopyToClipboardListener() {
e.preventDefault();
(async() => {
const success = await copyToClipboard(text);
const success = await clippie(text);
showTemporaryTooltip(target, success ? copy_success : copy_error);
})();