forgejo/web_src/js/features/clipboard.js
silverwind a159c3175f
Add new JS linter rules (#17699)
* Add new JS linter rules

Adds a few useful rules from eslint-plugin-github. Notable changes:

- Forbid dataset usage, its camel-casing behaviour makes it hard to
  grep for attributes.
- Forbid .then() and .catch(), we should generally prefer await for new
  code. For rare cases where they are useful, a eslint-disable-line
  directive can be set.
- Add docs js to linting

* also enable github/array-foreach

* small tweak

Co-authored-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
2021-11-22 16:19:01 +08:00

79 lines
2.4 KiB
JavaScript

const {copy_success, copy_error} = window.config.i18n;
function onSuccess(btn) {
btn.setAttribute('data-variation', 'inverted tiny');
$(btn).popup('destroy');
const oldContent = btn.getAttribute('data-content');
btn.setAttribute('data-content', copy_success);
$(btn).popup('show');
btn.setAttribute('data-content', oldContent || '');
}
function onError(btn) {
btn.setAttribute('data-variation', 'inverted tiny');
const oldContent = btn.getAttribute('data-content');
$(btn).popup('destroy');
btn.setAttribute('data-content', copy_error);
$(btn).popup('show');
btn.setAttribute('data-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;
}
// For all DOM elements with [data-clipboard-target] or [data-clipboard-text],
// this copy-to-clipboard will work for them
export default function initGlobalCopyToClipboardListener() {
document.addEventListener('click', (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++) {
const text = target.getAttribute('data-clipboard-text') || document.querySelector(target.getAttribute('data-clipboard-target'))?.value;
if (text) {
e.preventDefault();
(async() => {
try {
await navigator.clipboard.writeText(text);
onSuccess(target);
} catch {
if (fallbackCopyToClipboard(text)) {
onSuccess(target);
} else {
onError(target);
}
}
})();
break;
}
target = target.parentElement;
}
});
}