gallery/script/single.js

56 lines
1.3 KiB
JavaScript

'use strict';
function defined(x) {
return x !== null && typeof x !== 'undefined';
}
function getById(id) { return document.getElementById(id); }
function setImage(src, href, cw) {
let mainfig = getById('mainfig');
let mainimg = getById('mainimg');
let mainlink = getById('mainlink');
let caption = getById('cw');
if (defined(caption) && defined(cw)) {
caption.innerHTML = cw;
} else if (defined(caption)) {
mainfig.removeChild(caption);
} else if (defined(cw)) {
let newCaption = document.createElement('figcaption');
newCaption.id = 'cw';
newCaption.innerHTML = `<span id=cw-text>cw: <b>${cw}</b></span>`;
newCaption.onclick = openCW;
mainfig.insertBefore(newCaption, mainlink);
}
mainimg.src = src;
mainlink.href= href;
}
function activateButton(button) {
setImage(button.value, button.dataset.link, button.dataset.warning);
}
function openCW() {
let mainfig = getById('mainfig');
let caption = getById('cw');
if (defined(caption)) {
mainfig.removeChild(caption);
}
}
function setup() {
for (let button of document.querySelectorAll('#altlist input')) {
button.onchange = function(e) {
if (button.checked) activateButton(button);
};
}
let caption = getById('cw');
if (defined(caption)) {
caption.onclick = openCW;
}
}
window.onload = setup;