matrix-react-sdk
Version:
SDK for matrix.org using React
33 lines (30 loc) • 3.83 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.useIsExpanded = useIsExpanded;
var _react = require("react");
/*
Copyright 2024 New Vector Ltd.
Copyright 2022 The Matrix.org Foundation C.I.C.
SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only
Please see LICENSE files in the repository root for full details.
*/
function useIsExpanded(ref, breakingPoint) {
const [isExpanded, setIsExpanded] = (0, _react.useState)(false);
(0, _react.useEffect)(() => {
if (ref.current) {
const editor = ref.current;
const resizeObserver = new ResizeObserver(entries => {
requestAnimationFrame(() => {
const height = entries[0]?.contentBoxSize?.[0].blockSize;
setIsExpanded(height >= breakingPoint);
});
});
resizeObserver.observe(editor);
return () => resizeObserver.unobserve(editor);
}
}, [ref, breakingPoint]);
return isExpanded;
}
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