64 lines
1.5 KiB
JavaScript
64 lines
1.5 KiB
JavaScript
export const responsiveArray = ['xxl', 'xl', 'lg', 'md', 'sm', 'xs'];
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export const responsiveMap = {
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xs: '(max-width: 575px)',
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sm: '(min-width: 576px)',
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md: '(min-width: 768px)',
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lg: '(min-width: 992px)',
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xl: '(min-width: 1200px)',
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xxl: '(min-width: 1600px)',
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};
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const subscribers = new Map();
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let subUid = -1;
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let screens = {};
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const responsiveObserve = {
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matchHandlers: {},
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dispatch(pointMap) {
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screens = pointMap;
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subscribers.forEach(func => func(screens));
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return subscribers.size >= 1;
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},
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subscribe(func) {
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if (!subscribers.size) this.register();
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subUid += 1;
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subscribers.set(subUid, func);
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func(screens);
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return subUid;
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},
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unsubscribe(token) {
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subscribers.delete(token);
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if (!subscribers.size) this.unregister();
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},
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unregister() {
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Object.keys(responsiveMap).forEach(screen => {
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const matchMediaQuery = responsiveMap[screen];
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const handler = this.matchHandlers[matchMediaQuery];
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handler?.mql.removeListener(handler?.listener);
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});
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subscribers.clear();
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},
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register() {
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Object.keys(responsiveMap).forEach(screen => {
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const matchMediaQuery = responsiveMap[screen];
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const listener = ({ matches }) => {
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this.dispatch({
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...screens,
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[screen]: matches,
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});
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};
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const mql = window.matchMedia(matchMediaQuery);
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mql.addListener(listener);
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this.matchHandlers[matchMediaQuery] = {
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mql,
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listener,
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};
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listener(mql);
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});
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},
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};
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export default responsiveObserve;
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