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import style from './style.js';

style.add(

// Wrapper

'.tabbedView { display: flex; flex-flow: row wrap; align-content: flex-start; }',

'.tabbedView.left, .tabbedView.right { flex-flow: column wrap; }',

'.tabbedView.right > .tabLabel { order: 3; }',

// Hide things that shouldn't be shown

'.tabButton, .tabContent { display: none; }',

'.tabContent { order: 2; flex: 1 100%; }',

// Show current tab

'.tabButton:checked + .tabLabel + .tabContent { display: flex; }',

// Make the labels look nice

'.tabLabel { display: flex; padding: 2px 5px; border: 1px solid white; margin-right: 5px; }',

'.tabLabel.end { order: 1; }',

'.tabButton:checked + .tabLabel { background-color: rgb(68, 100, 189); }',

'.tabbedView.left > .tabLabel {}',

'.tabbedView.right > .tabLabel {}',

);

let groupID = 0;

export default function TabManager() {

const group = groupID;

groupID += 1;

const tabs = [];

const tabSettings = {

left: false,

};

const view = document.createElement('div');

view.classList.add('tabbedView');

function addTab(name = '', content = '') {

const id = tabs.length ? tabs[tabs.length - 1].id + 1 : 0;

const elements = newTab(`${group}-${id}`, group);

const tab = {

id,

elements,

content,

// Set first tab as active by default

active: tabs.length === 0,

};

tabs.push(tab);

function setName(value = name) {

elements[1].textContent = value;

}

function setContent(value = content) {

tab.content = value;

if (typeof value === 'string') {

elements[2].innerHTML = value;

}

}

function setEnd(value = false) {

elements[1].classList.toggle('end', value === true);

}

function setActive() {

if (tab.active) return;

tabs.forEach((t) => t.active = false);

tab.active = true;

}

// Initialize

setName();

setContent();

setEnd();

const wrapper = {

id,

setName,

setContent,

setEnd,

setActive,

};

Object.defineProperty(wrapper, 'active', {

get() {

return tab.active;

},

enumerable: true,

});

return wrapper;

}

function render(raw = false) {

view.classList.toggle('left', tabSettings.left);

// Update content of tabs

tabs.forEach(({

elements: [button, label, content],

content: contents,

active = false,

}) => {

if (active) {

button.checked = true;

}

let value = contents;

if (typeof value === 'function') {

value = value();

} else if (typeof value.render === 'function') {

value = value.render(true);

}

if (typeof value === 'string') {

content.innerHTML = value;

} else if (value instanceof HTMLElement) {

content.innerHTML = '';

content.appendChild(value);

} else return;

// Add tab to view

view.appendChild(button);

view.appendChild(label);

view.appendChild(content);

});

if (raw) return view;

return view.outerHTML;

}

function settings({

left = false,

}) {

tabSettings.left = left;

}

return {

addTab,

render,

settings,

};

}

function newTab(id = 0, group = 0) {

const name = `tab${id}`;

const button = document.createElement('input');

button.id = name;

button.type = 'radio';

button.name = `view${group}`;

button.classList.add('tabButton');

const label = document.createElement('label');

label.classList.add('tabLabel');

label.htmlFor = name;

const content = document.createElement('div');

content.classList.add('tabContent');

return [button, label, content];

}