paradiego

node_modules/@mui/material/useScrollTrigger/useScrollTrigger.js

@@ -0,0 +1,51 @@
+'use client';
+
+import * as React from 'react';
+function defaultTrigger(store, options) {
+  const {
+    disableHysteresis = false,
+    threshold = 100,
+    target
+  } = options;
+  const previous = store.current;
+  if (target) {
+    // Get vertical scroll
+    store.current = target.pageYOffset !== undefined ? target.pageYOffset : target.scrollTop;
+  }
+  if (!disableHysteresis && previous !== undefined) {
+    if (store.current < previous) {
+      return false;
+    }
+  }
+  return store.current > threshold;
+}
+const defaultTarget = typeof window !== 'undefined' ? window : null;
+export default function useScrollTrigger(options = {}) {
+  const {
+    getTrigger = defaultTrigger,
+    target = defaultTarget,
+    ...other
+  } = options;
+  const store = React.useRef();
+  const [trigger, setTrigger] = React.useState(() => getTrigger(store, other));
+  React.useEffect(() => {
+    const handleScroll = () => {
+      setTrigger(getTrigger(store, {
+        target,
+        ...other
+      }));
+    };
+    handleScroll(); // Re-evaluate trigger when dependencies change
+    target.addEventListener('scroll', handleScroll, {
+      passive: true
+    });
+    return () => {
+      target.removeEventListener('scroll', handleScroll, {
+        passive: true
+      });
+    };
+    // See Option 3. https://github.com/facebook/react/issues/14476#issuecomment-471199055
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [target, getTrigger, JSON.stringify(other)]);
+  return trigger;
+}