Created
January 25, 2024 15:23
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A slider that adapts to it's children
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import React from "react"; | |
import type { Variants } from "framer-motion"; | |
import { motion, AnimatePresence } from "framer-motion"; | |
const slideVariants: Variants = { | |
enter: { | |
x: "60%", | |
opacity: 0, | |
scale: 0.85, | |
}, | |
active: { | |
x: 0, | |
scale: 1, | |
zIndex: 1, | |
opacity: 1, | |
}, | |
exit: { | |
x: "-60%", | |
opacity: 0, | |
scale: 0.85, | |
}, | |
}; | |
interface SliderActions { | |
goToPrevSlide: () => void; | |
goToNextSlide: () => void; | |
} | |
const SliderContext = React.createContext<SliderActions | undefined>(undefined); | |
interface SliderProps { | |
children?: React.ReactNode; | |
} | |
export const Slider: React.FC<SliderProps> = ({ children }) => { | |
const sliderLength = React.Children.count(children); | |
const [slideIndex, setSlideIndex] = React.useState(0); | |
const goToNextSlide = () => { | |
if (slideIndex < sliderLength - 1) { | |
setSlideIndex((prev) => prev + 1); | |
} | |
}; | |
const goToPrevSlide = () => { | |
if (slideIndex > 0) { | |
setSlideIndex((prev) => prev - 1); | |
} | |
}; | |
return ( | |
<SliderContext.Provider | |
value={{ | |
goToPrevSlide, | |
goToNextSlide, | |
}} | |
> | |
<AnimatePresence mode="wait"> | |
{React.Children.map(children, (child, index) => { | |
if (index === slideIndex) { | |
return ( | |
<motion.div | |
layout | |
key={index} | |
exit="exit" | |
initial="enter" | |
animate="active" | |
variants={slideVariants} | |
transition={{ | |
duration: 0.25, | |
x: { type: "spring", stiffness: 300, damping: 30 }, | |
}} | |
> | |
{child} | |
</motion.div> | |
); | |
} | |
})} | |
</AnimatePresence> | |
</SliderContext.Provider> | |
); | |
}; | |
export const useSlider = () => { | |
const context = React.useContext(SliderContext); | |
if (context === undefined) { | |
throw new Error("useSlider must be used within a Slider"); | |
} | |
return { | |
prevSlide: context.goToPrevSlide, | |
nextSlide: context.goToNextSlide, | |
}; | |
}; |
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