74 lines
2.0 KiB
TypeScript
74 lines
2.0 KiB
TypeScript
export type Breakpoint = 'xxl' | 'xl' | 'lg' | 'md' | 'sm' | 'xs';
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export type BreakpointMap = Partial<Record<Breakpoint, string>>;
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export type ScreenMap = Partial<Record<Breakpoint, boolean>>;
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export const responsiveArray: Breakpoint[] = ['xxl', 'xl', 'lg', 'md', 'sm', 'xs'];
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export const responsiveMap: BreakpointMap = {
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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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type SubscribeFunc = (screens: ScreenMap) => void;
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const subscribers = new Map<Number, SubscribeFunc>();
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let subUid = -1;
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let screens = {};
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const responsiveObserve = {
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matchHandlers: {} as {
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[prop: string]: {
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mql: MediaQueryList;
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listener: ((this: MediaQueryList, ev: MediaQueryListEvent) => any) | null;
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};
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},
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dispatch(pointMap: ScreenMap) {
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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: SubscribeFunc): number {
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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: number) {
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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: string) => {
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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: string) => {
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const matchMediaQuery = responsiveMap[screen]!;
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const listener = ({ matches }: { matches: boolean }) => {
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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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