mastodon/app/javascript/hooks/useLinks.ts

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import { useCallback } from 'react';
import { useHistory } from 'react-router-dom';
import { openURL } from 'mastodon/actions/search';
import { useAppDispatch } from 'mastodon/store';
const isMentionClick = (element: HTMLAnchorElement) =>
element.classList.contains('mention');
const isHashtagClick = (element: HTMLAnchorElement) =>
element.textContent?.[0] === '#' ||
element.previousSibling?.textContent?.endsWith('#');
export const useLinks = () => {
const history = useHistory();
const dispatch = useAppDispatch();
const handleHashtagClick = useCallback(
(element: HTMLAnchorElement) => {
const { textContent } = element;
if (!textContent) return;
history.push(`/tags/${textContent.replace(/^#/, '')}`);
},
[history],
);
const handleMentionClick = useCallback(
(element: HTMLAnchorElement) => {
dispatch(
openURL(element.href, history, () => {
window.location.href = element.href;
}),
);
},
[dispatch, history],
);
const handleClick = useCallback(
(e: React.MouseEvent) => {
const target = (e.target as HTMLElement).closest('a');
if (!target || e.button !== 0 || e.ctrlKey || e.metaKey) {
return;
}
if (isMentionClick(target)) {
e.preventDefault();
handleMentionClick(target);
} else if (isHashtagClick(target)) {
e.preventDefault();
handleHashtagClick(target);
}
},
[handleMentionClick, handleHashtagClick],
);
return handleClick;
};