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import { useEffect, useRef, useState } from "@wordpress/element"; |
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import { stringTrim } from "../shared/helpFn"; |
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|
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const NewsTickerTypewriter = ({ posts = [], limit = "", className = "", showImage = false }) => { |
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const [currentText, setCurrentText] = useState(""); |
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const [isDeleting, setIsDeleting] = useState(false); |
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const [placeholderImg, setPlaceholderImg] = useState(""); |
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const animationRef = useRef(null); |
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const stateRef = useRef({ |
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postIndex: 0, |
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charIndex: 0, |
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delay: 60, |
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lastTime: 0, |
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}); |
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|
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useEffect(() => { |
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setPlaceholderImg( |
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window.location.origin + "/wp-content/plugins/smart-post-show-pro/public/assets/img/placeholder.png" |
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); |
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}, []); |
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|
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useEffect(() => { |
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if (!posts.length) return; |
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|
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const animate = (timestamp) => { |
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const state = stateRef.current; |
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|
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if (!state.lastTime) state.lastTime = timestamp; |
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const delta = timestamp - state.lastTime; |
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|
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// if (!isPaused && delta >= state.delay) { |
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const { title, url, target } = posts[state.postIndex]; |
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const limitTitle = stringTrim(title, limit); |
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|
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if (delta >= state.delay) { |
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let newCharIndex = isDeleting ? state.charIndex - 1 : state.charIndex + 1; |
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const newText = limitTitle.substring(0, newCharIndex); |
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|
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setCurrentText(newText); |
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state.charIndex = newCharIndex; |
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state.delay = isDeleting ? 20 : 60; |
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|
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if (!isDeleting && newText === limitTitle) { |
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state.delay = 1500; // Pause after full text |
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setIsDeleting(true); |
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} else if (isDeleting && newCharIndex === 0) { |
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setIsDeleting(false); |
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state.postIndex = (state.postIndex + 1) % posts.length; |
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state.delay = 800; // Pause before next word |
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} |
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|
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state.lastTime = timestamp; |
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} |
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|
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animationRef.current = requestAnimationFrame(animate); |
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}; |
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|
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animationRef.current = requestAnimationFrame(animate); |
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|
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return () => { |
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if (animationRef.current) { |
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cancelAnimationFrame(animationRef.current); |
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} |
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}; |
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}, [posts, isDeleting]); |
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// }, [posts, isDeleting, isPaused]); |
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|
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if (!posts?.length) return null; |
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|
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const currentPost = posts[stateRef.current.postIndex] || {}; |
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const { url, target, post_thumbnail_url } = currentPost; |
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|
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return ( |
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<div |
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className={`sps-news-ticker-typewriter-js`} |
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// onMouseEnter={() => setIsPaused(true)} |
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// onMouseLeave={() => setIsPaused(false)} |
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> |
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<span className={`${className}`}> |
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{showImage && ( |
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<img src={post_thumbnail_url || placeholderImg} className="sp-ticker-img sp-img-circle" /> |
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)} |
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<a className="sp-smart-post-ticker-title" href={url} target={target} rel="noopener noreferrer"> |
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{currentText} |
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</a> |
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</span> |
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</div> |
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); |
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}; |
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|
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export default NewsTickerTypewriter; |
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