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import React, { useRef, useState, useEffect, useCallback } from "react";
import { motion, useMotionValue, useTransform } from "framer-motion";
import { RefreshCw } from "lucide-react";
import "./PullToRefresh.css";
interface PullToRefreshProps {
onRefresh: () => Promise<void> | void;
isRefreshing?: boolean;
children: React.ReactNode;
threshold?: number;
}
export const PullToRefresh: React.FC<PullToRefreshProps> = ({
onRefresh,
isRefreshing = false,
children,
threshold = 60,
}) => {
const [isActive, setIsActive] = useState(false);
const [isPulling, setIsPulling] = useState(false);
const containerRef = useRef<HTMLDivElement>(null);
const startY = useRef<number>(0);
const y = useMotionValue(0);
const opacity = useTransform(y, [0, threshold], [0, 1]);
const scale = useTransform(y, [0, threshold], [0.5, 1]);
const rotate = useTransform(y, [0, threshold], [0, 180]);
const isAtPageTop = useCallback(() => {
const scrollTop =
window.pageYOffset ||
document.documentElement.scrollTop ||
document.body.scrollTop ||
0;
return scrollTop <= 10; // Increased tolerance to 10px
}, []);
const handleTouchStart = useCallback(
(e: TouchEvent) => {
// Very strict check - must be at absolute top
const windowScroll = window.pageYOffset || window.scrollY || 0;
const htmlScroll = document.documentElement.scrollTop;
const bodyScroll = document.body.scrollTop;
const containerScroll = containerRef.current?.scrollTop || 0;
const parentScroll = containerRef.current?.parentElement?.scrollTop || 0;
const maxScroll = Math.max(
windowScroll,
htmlScroll,
bodyScroll,
containerScroll,
parentScroll
);
if (maxScroll > 0 || isRefreshing) {
setIsPulling(false);
setIsActive(false);
return;
}
startY.current = e.touches[0].clientY;
setIsPulling(true);
},
[isRefreshing]
);
const handleTouchMove = useCallback(
(e: TouchEvent) => {
if (!isPulling) return;
// Continuously check if we're still at the top during the gesture
const windowScroll = window.pageYOffset || window.scrollY || 0;
const htmlScroll = document.documentElement.scrollTop;
const bodyScroll = document.body.scrollTop;
const containerScroll = containerRef.current?.scrollTop || 0;
const parentScroll = containerRef.current?.parentElement?.scrollTop || 0;
const maxScroll = Math.max(
windowScroll,
htmlScroll,
bodyScroll,
containerScroll,
parentScroll
);
if (maxScroll > 10) {
// Cancel pull-to-refresh if we've scrolled away from top
setIsPulling(false);
setIsActive(false);
y.set(0);
return;
}
const currentY = e.touches[0].clientY;
const pullDistance = currentY - startY.current;
if (pullDistance > 0) {
// Only prevent default when the event is cancelable
if (e.cancelable) {
e.preventDefault();
}
const dampedDistance = Math.min(pullDistance * 0.5, threshold * 1.2);
y.set(dampedDistance);
if (dampedDistance >= threshold && !isActive) {
setIsActive(true);
// Only vibrate if user activation is available and vibrate is supported
if (navigator.vibrate && navigator.userActivation?.hasBeenActive) {
navigator.vibrate(50);
}
} else if (dampedDistance < threshold && isActive) {
setIsActive(false);
}
} else {
// Reset if pulling up
y.set(0);
setIsActive(false);
}
},
[isPulling, threshold, isActive, y]
);
const handleTouchEnd = useCallback(async () => {
if (!isPulling) return;
setIsPulling(false);
if (isActive && y.get() >= threshold && !isRefreshing) {
try {
await onRefresh();
} catch (error) {
console.error("Refresh failed:", error);
}
}
// Always reset state
setIsActive(false);
y.set(0);
startY.current = 0;
}, [isPulling, isActive, threshold, isRefreshing, onRefresh, y]);
useEffect(() => {
const container = containerRef.current;
if (!container) return;
// Use passive: false for touchmove to allow preventDefault
container.addEventListener("touchstart", handleTouchStart, {
passive: true,
});
container.addEventListener("touchmove", handleTouchMove, {
passive: false,
});
container.addEventListener("touchend", handleTouchEnd, { passive: true });
return () => {
container.removeEventListener("touchstart", handleTouchStart);
container.removeEventListener("touchmove", handleTouchMove);
container.removeEventListener("touchend", handleTouchEnd);
};
}, [handleTouchStart, handleTouchMove, handleTouchEnd]);
return (
<div className="pull-to-refresh-container" ref={containerRef}>
{/* Simple indicator */}
{isPulling && (
<motion.div className="pull-to-refresh-indicator" style={{ opacity }}>
<motion.div
className={`refresh-icon-container ${isActive ? "active" : ""}`}
style={{ scale, rotate: isRefreshing ? 0 : rotate }}
>
<RefreshCw
className={`refresh-icon ${isRefreshing ? "spinning" : ""}`}
/>
</motion.div>
</motion.div>
)}
{/* Normal content - no transform interference */}
<div className="pull-to-refresh-content">{children}</div>
</div>
);
};
|
