I wanted to create a slide show of texts.
Help me …
Thanks in advance…
Sheldon
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(http://) [IrfanView]
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Here you have a simple implementation of a basic slider.
<link rel="import" href="../bower_components/polymer/polymer.html">
<dom-module id="vaadin-presentation">
<template>
<style>
* {box-sizing: border-box}
body {font-family: Verdana, sans-serif; margin:0}
/* Slideshow container */
.slideshow-container {
position: relative;
background: #f1f1f1f1;
}
/* Slides */
.mySlides {
display: none;
padding: 80px;
text-align: center;
}
/* Next & previous buttons */
.prev, .next {
cursor: pointer;
position: absolute;
top: 50%;
width: auto;
margin-top: -30px;
padding: 16px;
color: #888;
font-weight: bold;
font-size: 20px;
border-radius: 0 3px 3px 0;
user-select: none;
}
/* Position the "next button" to the right */
.next {
position: absolute;
right: 0;
border-radius: 3px 0 0 3px;
}
/* On hover, add a black background color with a little bit see-through */
.prev:hover, .next:hover {
background-color: rgba(0,0,0,0.8);
color: white;
}
/* The dot/bullet/indicator container */
.dot-container {
text-align: center;
padding: 20px;
background: #ddd;
}
/* The dots/bullets/indicators */
.dot {
cursor: pointer;
height: 15px;
width: 15px;
margin: 0 2px;
background-color: #bbb;
border-radius: 50%;
display: inline-block;
transition: background-color 0.6s ease;
}
/* Add a background color to the active dot/circle */
.active, .dot:hover {
background-color: #717171;
}
/* Add an italic font style to all quotes */
q {font-style: italic;}
/* Add a blue color to the author */
.author {color: cornflowerblue;}
</style>
<div class="slideshow-container">
<div class="mySlides">
<q>I love you the more in that I believe you had liked me for my own sake and for nothing else</q>
<p class="author">- John Keats</p>
</div>
<div class="mySlides">
<q>But man is not made for defeat. A man can be destroyed but not defeated.</q>
<p class="author">- Ernest Hemingway</p>
</div>
<div class="mySlides">
<q>I have not failed. I've just found 10,000 ways that won't work.</q>
<p class="author">- Thomas A. Edison</p>
</div>
<a class="prev" on-click="previousSlide">❮</a>
<a class="next" on-click="nextSlide">❯</a>
</div>
<div class="dot-container">
<span class="dot" on-click="currentSlide" data-item="1"></span>
<span class="dot" on-click="currentSlide" data-item="2"></span>
<span class="dot" on-click="currentSlide" data-item="3"></span>
</div>
</template>
<script>
class VaadinPresentation extends Polymer.Element {
static get is() {
return 'vaadin-presentation';
}
static get properties() {
return {
// Declare your properties here.
slideIndex: {
type: Number,
value:1,
reflectToAttribute: true,
observer: '_slideChanged',
notify: true
},
slidesNumber: {
type: Number,
}
};
}
ready(){
super.ready();
this.showSlides(this.slideIndex);
}
// Observer method defined as a class method
_slideChanged(newValue, oldValue) {
this.showSlides(newValue);
}
plusSlides(n) {
this.slideIndex += n;
}
currentSlide(event) {
this.slideIndex= event.target.dataset.item;
}
nextSlide(){
this.slideIndex += 1;
}
previousSlide(){
this.slideIndex -= 1;
}
showSlides(n) {
var i;
var slides = this.shadowRoot.querySelectorAll(".mySlides");
var dots = this.shadowRoot.querySelectorAll(".dot");
if (n > slides.length) {this.slideIndex = 1}
if (n < 1) {this.slideIndex = slides.length}
for (i = 0; i < slides.length; i++) {
slides[i]
.style.display = "none";
}
for (i = 0; i < dots.length; i++) {
dots[i]
.className = dots[i]
.className.replace(" active", "");
}
slides[this.slideIndex-1]
.style.display = "block";
dots[this.slideIndex-1]
.className += " active";
}
}
customElements.define(VaadinPresentation.is, VaadinPresentation);
</script>
</dom-module>