/Javascript/React/Automatic Slideshow in react js

Automatic Slideshow in react js

import React from 'react';

import SlidesShowStore   from '../stores/SlidesShowStore';
import SlidesShowActions from '../actions/SlidesShowActions';
import Slides from '../components/Slides';

class SlidesShow extends React.Component {
  constructor(props) {
    super(props);
    this.state = SlidesShowStore.getState();
    this.onChange = this.onChange.bind(this);
    this.IMAGES = [];
  }

  componentDidMount() {
    SlidesShowStore.listen(this.onChange);
    this.tick();
    SlidesShowActions.startTimer();
    this.handleChange();
  }

  componentWillUnmount() {
    SlidesShowStore.unlisten(this.onChange);
  }

  onChange(state) {
    this.setState(state);
  }

  handleChange() {
    this.setState(SlidesShowStore.getState());
  }

  toggleNext( event) {
    event.preventDefault();
    var current = this.state.currentSlide;
    var next = current + 1;
    if (next > this.IMAGES.length - 1) {
      next = 0;
    }
    this.setState( {currentSlide: next} );
  }

  togglePrev(event) {
    event.preventDefault();   
    var current = this.state.currentSlide;
    var prev = current - 1;
    if (prev < 0) {
      prev = this.IMAGES.length - 1;
    }
    this.setState( {currentSlide: prev} );  
  }   

  toggleSlide(id) {
    var index = this.IMAGES.map(function (el) {
      return (
        el.id
      );
    });
    var currentIndex = index.indexOf(id);       
    this.setState( {currentSlide: currentIndex} );
  }

  Next() {
    var current = this.state.currentSlide;
    var next = current + 1;
    if (next > this.IMAGES.length - 1) {
      next = 0;
    }
    this.setState( {currentSlide: next} );
  }

  tick() {
    var self = this;
    this.interval = setTimeout(function() {
      if (self.state.status === 'stop') {
        self.interval = undefined;
        return;
      }
      if (self.state.timeLeft <= 0) {
        SlidesShowActions.timeout();
      } else {
        SlidesShowActions.tick();
        self.Next();
      }
      self.tick();
    }, 1000);
  }

  handleClickStart(event) {
    event.preventDefault();  
    this.tick();
    SlidesShowActions.startTimer();
    this.handleChange();
  }

  handleClickStop(event) {
    event.preventDefault(); 
    SlidesShowActions.stopTimer();
    this.handleChange();
  }

  handleClickReset(event) {
    event.preventDefault();  
    SlidesShowActions.resetTimer();
  }

  render() {
    this.IMAGES = [
     {id: "slide1", imagePath : "/img/img1.jpg", imageAlt : "Slide 1 Image", title : "Slide 1", subtitle : "Slide 1 Image SubTitle", text : "Slide 1 Image Text", action : "Slide 1 Image Action", actionHref : "href"  },
     {id: "slide2", imagePath : "/img/img2.jpg", imageAlt : "Slide 2 Image", title : "Slide 2", subtitle : "Slide 2 Image SubTitle", text : "Slide 2 Image Text", action : "Slide 2 Image Action", actionHref : "href"  },
     {id: "slide3", imagePath : "/img/img3.jpg", imageAlt : "Slide 3 Image", title : "Slide 3", subtitle : "Slide 3 Image SubTitle", text : "Slide 3 Image Text", action : "Slide 3 Image Action", actionHref : "href"  }
    ];

    var self = this;
    var paginationNodes = this.IMAGES.map(function (paginationNode, i) {
      var boundClick = self.toggleSlide.bind(self, paginationNode.id);
      return (
        <span className="pager" onClick={boundClick}>  key={paginationNode.Title}  </span>
      );
     });

   return (  
    <div className="container">
      <div className="slideshow">
        <link rel="stylesheet" href="css/styles.css" />
        <Slides data={this.IMAGES} currentSlide={this.state.currentSlide} />
        <div className="pagination">{paginationNodes}</div>
        <div className="toggle toggle--prev" onClick={this.togglePrev.bind(this)}>Prev</div>
        <div className="toggle toggle--next" onClick={this.toggleNext.bind(this)}>Next</div>    
        <button onClick={this.handleClickStart.bind(this)}>Start</button>
        <button onClick={this.handleClickStop.bind(this)}>Stop</button>
        <button onClick={this.handleClickReset.bind(this)}>Reset</button>   
       </div>
    </div>
    );
  }
}

export default SlidesShow;

Source: stackoverflow.com

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