dodex-vertx/src/spa-react/appl/js/carousel.js

A java asynchronous server for Dodex and Dodex-mess

/* eslint no-new: 0 */
let TxtRotate = function (el, toRotate, period) {
    this.toRotate = toRotate;
    this.el = el;
    this.loopNum = 0;
    this.period = parseInt(period, 10) || 2000;
    this.txt = "";
    this.tick();
    this.isDeleting = false;
};

TxtRotate.prototype.tick = function () {
    let i = this.loopNum % this.toRotate.length;
    let fullTxt = this.toRotate[i];

    if (this.isDeleting) {
        this.txt = fullTxt.substring(0, this.txt.length - 1);
    } else {
        this.txt = fullTxt.substring(0, this.txt.length + 1);
    }

    this.el.innerHTML = "<span class=\"wrap\">" + this.txt + "</span>";

    let that = this;
    let delta = 300 - Math.random() * 100;

    if (this.isDeleting) { delta /= 2; }

    if (!this.isDeleting && this.txt === fullTxt) {
        delta = this.period;
        this.isDeleting = true;
    } else if (this.isDeleting && this.txt === "") {
        this.isDeleting = false;
        this.loopNum++;
        delta = 500;
    }

    setTimeout(function () {
        that.tick();
    }, delta);
};

// window.onload = function () {
export default function () {
    let elements = document.getElementsByClassName("txt-rotate");
    for (let i = 0; i < elements.length; i++) {
        let toRotate = elements[i].getAttribute("data-rotate");
        let period = elements[i].getAttribute("data-period");
        if (toRotate) {
            new TxtRotate(elements[i], JSON.parse(toRotate), period);
        }
    }
    // INJECT CSS
    let css = document.createElement("style");
    css.type = "text/css";
    css.innerHTML = ".txt-rotate > .wrap { border-right: 0.08em solid #666 }";
    document.body.appendChild(css);
}