moviewyrm/bookwyrm/static/js/shared.js
2021-01-29 10:25:31 -08:00

204 lines
5.9 KiB
JavaScript

// set up javascript listeners
window.onload = function() {
// buttons that display or hide content
document.querySelectorAll('[data-controls]')
.forEach(t => t.onclick = toggleAction);
// javascript interactions (boost/fav)
Array.from(document.getElementsByClassName('interaction'))
.forEach(t => t.onsubmit = interact);
// select all
Array.from(document.getElementsByClassName('select-all'))
.forEach(t => t.onclick = selectAll);
// toggle between tabs
Array.from(document.getElementsByClassName('tab-change'))
.forEach(t => t.onclick = tabChange);
// handle aria settings on menus
Array.from(document.getElementsByClassName('pulldown-menu'))
.forEach(t => t.onclick = toggleMenu);
// display based on localstorage vars
document.querySelectorAll('[data-hide]')
.forEach(t => setDisplay(t));
// update localstorage
Array.from(document.getElementsByClassName('set-display'))
.forEach(t => t.onclick = updateDisplay);
// hidden submit button in a form
document.querySelectorAll('.hidden-form input')
.forEach(t => t.onchange = revealForm);
// polling
document.querySelectorAll('[data-poll]')
.forEach(el => polling(el));
// browser back behavior
document.querySelectorAll('[data-back]')
.forEach(t => t.onclick = back);
};
function back(e) {
e.preventDefault();
history.back();
}
function polling(el) {
let delay = 10000 + (Math.random() * 1000);
setTimeout(function() {
fetch('/api/updates/' + el.getAttribute('data-poll'))
.then(response => response.json())
.then(data => updateCountElement(el, data));
polling(el);
}, delay, el);
}
function updateCountElement(el, data) {
const currentCount = el.innerText;
const count = data[el.getAttribute('data-poll')];
if (count != currentCount) {
addRemoveClass(el, 'hidden', count < 1);
el.innerText = count;
}
}
function revealForm(e) {
var hidden = e.currentTarget.closest('.hidden-form').getElementsByClassName('hidden')[0];
if (hidden) {
removeClass(hidden, 'hidden');
}
}
function updateDisplay(e) {
// used in set reading goal
var key = e.target.getAttribute('data-id');
var value = e.target.getAttribute('data-value');
window.localStorage.setItem(key, value);
document.querySelectorAll('[data-hide="' + key + '"]')
.forEach(t => setDisplay(t));
}
function setDisplay(el) {
// used in set reading goal
var key = el.getAttribute('data-hide');
var value = window.localStorage.getItem(key);
addRemoveClass(el, 'hidden', value);
}
function toggleAction(e) {
var el = e.currentTarget;
var pressed = el.getAttribute('aria-pressed') == 'false';
var targetId = el.getAttribute('data-controls');
document.querySelectorAll('[data-controls="' + targetId + '"]')
.forEach(t => t.setAttribute('aria-pressed', (t.getAttribute('aria-pressed') == 'false')));
if (targetId) {
var target = document.getElementById(targetId);
addRemoveClass(target, 'hidden', !pressed);
addRemoveClass(target, 'is-active', pressed);
}
// show/hide container
var container = document.getElementById('hide-' + targetId);
if (!!container) {
addRemoveClass(container, 'hidden', pressed);
}
// set checkbox, if appropriate
var checkbox = el.getAttribute('data-controls-checkbox');
if (checkbox) {
document.getElementById(checkbox).checked = !!pressed;
}
// set focus, if appropriate
var focus = el.getAttribute('data-focus-target');
if (focus) {
var focusEl = document.getElementById(focus);
focusEl.focus();
setTimeout(function(){ focusEl.selectionStart = focusEl.selectionEnd = 10000; }, 0);
}
}
function interact(e) {
e.preventDefault();
ajaxPost(e.target);
var identifier = e.target.getAttribute('data-id');
Array.from(document.getElementsByClassName(identifier))
.forEach(t => addRemoveClass(t, 'hidden', t.className.indexOf('hidden') == -1));
}
function selectAll(e) {
e.target.parentElement.parentElement.querySelectorAll('[type="checkbox"]')
.forEach(t => t.checked=true);
}
function tabChange(e) {
var el = e.currentTarget;
var parentElement = el.closest('[role="tablist"]');
parentElement.querySelectorAll('[aria-selected="true"]')
.forEach(t => t.setAttribute("aria-selected", false));
el.setAttribute("aria-selected", true);
parentElement.querySelectorAll('li')
.forEach(t => removeClass(t, 'is-active'));
addClass(el, 'is-active');
var tabId = el.getAttribute('data-tab');
Array.from(document.getElementsByClassName(el.getAttribute('data-category')))
.forEach(t => addRemoveClass(t, 'hidden', t.id != tabId));
}
function toggleMenu(e) {
var el = e.currentTarget;
var expanded = el.getAttribute('aria-expanded') == 'false';
el.setAttribute('aria-expanded', expanded);
var targetId = el.getAttribute('data-controls');
if (targetId) {
var target = document.getElementById(targetId);
addRemoveClass(target, 'is-active', expanded);
}
}
function ajaxPost(form) {
fetch(form.action, {
method : "POST",
body: new FormData(form)
});
}
function addRemoveClass(el, classname, bool) {
if (bool) {
addClass(el, classname);
} else {
removeClass(el, classname);
}
}
function addClass(el, classname) {
var classes = el.className.split(' ');
if (classes.indexOf(classname) > -1) {
return;
}
el.className = classes.concat(classname).join(' ');
}
function removeClass(el, className) {
var classes = [];
if (el.className) {
classes = el.className.split(' ');
}
const idx = classes.indexOf(className);
if (idx > -1) {
classes.splice(idx, 1);
}
el.className = classes.join(' ');
}