/**
* This file is part of the Tracy (https://tracy.nette.org)
*/
'use strict';
(function() {
// enables <a class="tracy-toggle" href="#"> or <span data-tracy-ref="#"> toggling
class Toggle
{
static init() {
document.documentElement.addEventListener('click', (e) => {
let el = e.target.closest('.tracy-toggle');
if (el && !e.shiftKey && !e.altKey && !e.ctrlKey && !e.metaKey) {
Toggle.toggle(el);
e.stopImmediatePropagation();
}
});
Toggle.init = function() {};
}
// changes element visibility
static toggle(el, show) {
let collapsed = el.classList.contains('tracy-collapsed'),
ref = el.getAttribute('data-tracy-ref') || el.getAttribute('href', 2),
dest = el;
if (typeof show === 'undefined') {
show = collapsed;
} else if (!show === collapsed) {
return;
}
if (!ref || ref === '#') {
ref = '+';
} else if (ref.substr(0, 1) === '#') {
dest = document;
}
ref = ref.match(/(\^\s*([^+\s]*)\s*)?(\+\s*(\S*)\s*)?(.*)/);
dest = ref[1] ? dest.parentNode : dest;
dest = ref[2] ? dest.closest(ref[2]) : dest;
dest = ref[3] ? Toggle.nextElement(dest.nextElementSibling, ref[4]) : dest;
dest = ref[5] ? dest.querySelector(ref[5]) : dest;
el.classList.toggle('tracy-collapsed', !show);
dest.classList.toggle('tracy-collapsed', !show);
el.dispatchEvent(new CustomEvent('tracy-toggle', {
bubbles: true,
detail: {relatedTarget: dest, collapsed: !show}
}));
}
// save & restore toggles
static persist(baseEl, restore) {
let saved = [];
baseEl.addEventListener('tracy-toggle', (e) => {
if (saved.indexOf(e.target) < 0) {
saved.push(e.target);
}
});
let toggles = JSON.parse(sessionStorage.getItem('tracy-toggles-' + baseEl.id));
if (toggles && restore !== false) {
toggles.forEach((item) => {
let el = baseEl;
for (let i in item.path) {
if (!(el = el.children[item.path[i]])) {
return;
}
}
if (el.textContent === item.text) {
Toggle.toggle(el, item.show);
}
});
}
window.addEventListener('unload', () => {
toggles = saved.map((el) => {
let item = {path: [], text: el.textContent, show: !el.classList.contains('tracy-collapsed')};
do {
item.path.unshift(Array.from(el.parentNode.children).indexOf(el));
el = el.parentNode;
} while (el && el !== baseEl);
return item;
});
sessionStorage.setItem('tracy-toggles-' + baseEl.id, JSON.stringify(toggles));
});
}
// finds next matching element
static nextElement(el, selector) {
while (el && selector && !el.matches(selector)) {
el = el.nextElementSibling;
}
return el;
}
}
let Tracy = window.Tracy = window.Tracy || {};
Tracy.Toggle = Tracy.Toggle || Toggle;
})();
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