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Merge pull request #5142 from matrix-org/t3chguy/hooks/base-avatar

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BaseAvatar avoid initial render with default avatar
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Michael Telatynski 2020-08-25 09:02:57 +01:00 committed by GitHub
commit 634f7ba938
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1 changed files with 21 additions and 20 deletions
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41
src/components/views/avatars/BaseAvatar.tsx
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@ -42,34 +42,35 @@ interface IProps {
className?: string;
}
const calculateUrls = (url, urls) => {
// work out the full set of urls to try to load. This is formed like so:
// imageUrls: [ props.url, ...props.urls ]
let _urls = [];
if (!SettingsStore.getValue("lowBandwidth")) {
_urls = urls || [];
if (url) {
_urls.unshift(url); // put in urls[0]
}
}
// deduplicate URLs
return Array.from(new Set(_urls));
};
const useImageUrl = ({url, urls}): [string, () => void] => {
const [imageUrls, setUrls] = useState<string[]>([]);
const [urlsIndex, setIndex] = useState<number>();
const [imageUrls, setUrls] = useState<string[]>(calculateUrls(url, urls));
const [urlsIndex, setIndex] = useState<number>(0);
const onError = useCallback(() => {
setIndex(i => i + 1); // try the next one
}, []);
const memoizedUrls = useMemo(() => urls, [JSON.stringify(urls)]); // eslint-disable-line react-hooks/exhaustive-deps
useEffect(() => {
// work out the full set of urls to try to load. This is formed like so:
// imageUrls: [ props.url, ...props.urls ]
let _urls = [];
if (!SettingsStore.getValue("lowBandwidth")) {
_urls = memoizedUrls || [];
if (url) {
_urls.unshift(url); // put in urls[0]
}
}
// deduplicate URLs
_urls = Array.from(new Set(_urls));
setUrls(calculateUrls(url, urls));
setIndex(0);
setUrls(_urls);
}, [url, memoizedUrls]); // eslint-disable-line react-hooks/exhaustive-deps
}, [url, JSON.stringify(urls)]); // eslint-disable-line react-hooks/exhaustive-deps
const cli = useContext(MatrixClientContext);
const onClientSync = useCallback((syncState, prevState) => {