breezewiki/static/tabs.js

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1.9 KiB
JavaScript
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"use strict";
let tabToFind = location.hash.length > 1 ? location.hash.substring(1) : null;
for (let tabber of document.body.querySelectorAll(".wds-tabber")) {
let [tabs, contents] = getTabs(tabber);
for (let i in tabs) {
let tab = tabs[i];
let content = contents[i];
tab.addEventListener("click", function(e) {
setCurrentTab(tabber, tab, content);
e.preventDefault();
});
if (tab.dataset.hash === tabToFind) {
setCurrentTab(tabber, tab, content);
}
}
}
document.body.classList.remove("bw-tabs-nojs");
function getTabs(tabber) {
let tabs = [];
let contents = [];
for (let i of tabber.querySelector(".wds-tabs__wrapper").querySelectorAll(".wds-tabs__tab")) {
tabs.push(i);
}
for (let i of tabber.children) {
if (!i.matches(".wds-tab__content")) {
continue;
}
contents.push(i);
}
return [tabs, contents];
}
function getCurrentTab(tabber) {
let tab = null;
let content = null;
tab = tabber.querySelector(".wds-tabs__wrapper").querySelector(".wds-tabs__tab.wds-is-current");
for (let i of tabber.children) {
if (!i.matches(".wds-tab__content.wds-is-current")) {
continue;
}
content = i;
break;
}
return [tab, content];
}
function setCurrentTab(tabber, tab, content) {
let [currentTab, currentContent] = getCurrentTab(tabber);
if (currentTab) {
currentTab.classList.remove("wds-is-current");
}
if (currentContent) {
currentContent.classList.remove("wds-is-current");
}
tab.classList.add("wds-is-current");
content.classList.add("wds-is-current");
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if (tab.dataset.hash) {
let fragment = "#" + tab.dataset.hash;
if (location.hash !== fragment) {
history.pushState(null, "", fragment);
}
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}
}