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frontend/node_modules/antd/es/_util/responsiveObserver.js

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+import React from 'react';
+import { useToken } from '../theme/internal';
+import { addMediaQueryListener, removeMediaQueryListener } from './mediaQueryUtil';
+export const responsiveArray = ['xxl', 'xl', 'lg', 'md', 'sm', 'xs'];
+const getResponsiveMap = token => ({
+  xs: `(max-width: ${token.screenXSMax}px)`,
+  sm: `(min-width: ${token.screenSM}px)`,
+  md: `(min-width: ${token.screenMD}px)`,
+  lg: `(min-width: ${token.screenLG}px)`,
+  xl: `(min-width: ${token.screenXL}px)`,
+  xxl: `(min-width: ${token.screenXXL}px)`
+});
+/**
+ * Ensures that the breakpoints token are valid, in good order
+ * For each breakpoint : screenMin <= screen <= screenMax and screenMax <= nextScreenMin
+ */
+const validateBreakpoints = token => {
+  const indexableToken = token;
+  const revBreakpoints = [].concat(responsiveArray).reverse();
+  revBreakpoints.forEach((breakpoint, i) => {
+    const breakpointUpper = breakpoint.toUpperCase();
+    const screenMin = `screen${breakpointUpper}Min`;
+    const screen = `screen${breakpointUpper}`;
+    if (!(indexableToken[screenMin] <= indexableToken[screen])) {
+      throw new Error(`${screenMin}<=${screen} fails : !(${indexableToken[screenMin]}<=${indexableToken[screen]})`);
+    }
+    if (i < revBreakpoints.length - 1) {
+      const screenMax = `screen${breakpointUpper}Max`;
+      if (!(indexableToken[screen] <= indexableToken[screenMax])) {
+        throw new Error(`${screen}<=${screenMax} fails : !(${indexableToken[screen]}<=${indexableToken[screenMax]})`);
+      }
+      const nextBreakpointUpperMin = revBreakpoints[i + 1].toUpperCase();
+      const nextScreenMin = `screen${nextBreakpointUpperMin}Min`;
+      if (!(indexableToken[screenMax] <= indexableToken[nextScreenMin])) {
+        throw new Error(`${screenMax}<=${nextScreenMin} fails : !(${indexableToken[screenMax]}<=${indexableToken[nextScreenMin]})`);
+      }
+    }
+  });
+  return token;
+};
+export const matchScreen = (screens, screenSizes) => {
+  if (!screenSizes) {
+    return;
+  }
+  for (const breakpoint of responsiveArray) {
+    if (screens[breakpoint] && (screenSizes === null || screenSizes === void 0 ? void 0 : screenSizes[breakpoint]) !== undefined) {
+      return screenSizes[breakpoint];
+    }
+  }
+};
+const useResponsiveObserver = () => {
+  const [, token] = useToken();
+  const responsiveMap = getResponsiveMap(validateBreakpoints(token));
+  // To avoid repeat create instance, we add `useMemo` here.
+  return React.useMemo(() => {
+    const subscribers = new Map();
+    let subUid = -1;
+    let screens = {};
+    return {
+      responsiveMap,
+      matchHandlers: {},
+      dispatch(pointMap) {
+        screens = pointMap;
+        subscribers.forEach(func => func(screens));
+        return subscribers.size >= 1;
+      },
+      subscribe(func) {
+        if (!subscribers.size) {
+          this.register();
+        }
+        subUid += 1;
+        subscribers.set(subUid, func);
+        func(screens);
+        return subUid;
+      },
+      unsubscribe(paramToken) {
+        subscribers.delete(paramToken);
+        if (!subscribers.size) {
+          this.unregister();
+        }
+      },
+      register() {
+        Object.entries(responsiveMap).forEach(([screen, mediaQuery]) => {
+          const listener = ({
+            matches
+          }) => {
+            this.dispatch(Object.assign(Object.assign({}, screens), {
+              [screen]: matches
+            }));
+          };
+          const mql = window.matchMedia(mediaQuery);
+          addMediaQueryListener(mql, listener);
+          this.matchHandlers[mediaQuery] = {
+            mql,
+            listener
+          };
+          listener(mql);
+        });
+      },
+      unregister() {
+        Object.values(responsiveMap).forEach(mediaQuery => {
+          const handler = this.matchHandlers[mediaQuery];
+          removeMediaQueryListener(handler === null || handler === void 0 ? void 0 : handler.mql, handler === null || handler === void 0 ? void 0 : handler.listener);
+        });
+        subscribers.clear();
+      }
+    };
+  }, [responsiveMap]);
+};
+export default useResponsiveObserver;