mirror of
https://github.com/kiddin9/op-packages.git
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297 lines
8.2 KiB
JavaScript
297 lines
8.2 KiB
JavaScript
'use strict';
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'require baseclass';
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'require ui';
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/* Liquid theme menu renderer, based on luci-theme-openwrt-2020's
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* menu-openwrt2020.js (Apache 2.0). Renders the left sidebar into
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* #mainmenu, the mode menu into #modemenu and sub page tabs into
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* #tabmenu. */
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return baseclass.extend({
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__init__() {
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ui.menu.load().then((tree) => this.render(tree));
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},
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render(tree) {
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let node = tree;
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let url = '';
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this.renderModeMenu(node);
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if (L.env.dispatchpath.length >= 3) {
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for (var i = 0; i < 3 && node; i++) {
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node = node.children[L.env.dispatchpath[i]];
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url = url + (url ? '/' : '') + L.env.dispatchpath[i];
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}
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if (node)
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this.renderTabMenu(node, url);
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}
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document.querySelector('#menubar > .navigation')
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.addEventListener('click', ui.createHandlerFn(this, 'handleSidebarToggle'));
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this.initMenuIndicator();
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},
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/* hover 追踪：一个玻璃滑块平滑跟随鼠标在一级菜单项间移动 */
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initMenuIndicator() {
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const menu = document.querySelector('#mainmenu');
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if (!menu)
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return;
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const indicator = E('div', { 'class': 'liquid-menu-indicator' });
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menu.appendChild(indicator);
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const items = menu.querySelectorAll('ul.mainmenu.l1 > li');
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/* 追踪鼠标位置，供 handleMenuExpand 展开/折叠后重新定位滑块 */
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var self = this;
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self._menu = menu;
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self._indicator = indicator;
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self._lastX = 0;
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self._lastY = 0;
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menu.addEventListener('mousemove', function (ev) {
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self._lastX = ev.clientX;
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self._lastY = ev.clientY;
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});
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menu.addEventListener('mouseleave', function () {
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menu.classList.remove('liquid-menu-hovering');
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});
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menu.addEventListener('scroll', function () {
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menu.classList.remove('liquid-menu-hovering');
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menu.querySelectorAll('ul.mainmenu.l2.liquid-sub-hovering').forEach(function (ul) {
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ul.classList.remove('liquid-sub-hovering');
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});
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});
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items.forEach(function (li) {
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li.addEventListener('mouseenter', function () {
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if (li.classList.contains('selected')) {
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/* 当前菜单已有自身高亮，滑块滑到它时不叠加，避免遮挡 */
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menu.classList.remove('liquid-menu-hovering');
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return;
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}
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const a = li.querySelector(':scope > a');
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const menuRect = menu.getBoundingClientRect();
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const aRect = a.getBoundingClientRect();
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indicator.style.transform =
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'translateY(%dpx)'.format(aRect.top - menuRect.top + menu.scrollTop);
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indicator.style.height = '%dpx'.format(aRect.height);
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menu.classList.add('liquid-menu-hovering');
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});
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});
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/* 二级菜单追踪滑块：每个展开的 ul.l2 一个 */
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menu.querySelectorAll('ul.mainmenu.l2').forEach(function (ul) {
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const sub = E('div', { 'class': 'liquid-sub-indicator' });
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ul.appendChild(sub);
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ul.querySelectorAll(':scope > li').forEach(function (li) {
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li.addEventListener('mouseenter', function () {
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if (li.classList.contains('selected')) {
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/* 当前选中项已有胶囊高亮，滑块不叠加 */
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ul.classList.remove('liquid-sub-hovering');
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return;
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}
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const a = li.querySelector(':scope > a');
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const ulRect = ul.getBoundingClientRect();
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const aRect = a.getBoundingClientRect();
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sub.style.transform = 'translateY(%dpx)'.format(aRect.top - ulRect.top);
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sub.style.height = '%dpx'.format(aRect.height);
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ul.classList.add('liquid-sub-hovering');
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});
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});
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ul.addEventListener('mouseleave', function () {
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ul.classList.remove('liquid-sub-hovering');
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});
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});
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},
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/* 展开/折叠后，用当前鼠标位置重新定位一级滑块。
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点击切换分类时菜单项垂直位移，但鼠标未离开——mouseenter
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不触发，滑块停留在旧位置。此处用最近的鼠标坐标查出
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当前悬停的 li 并重算 translateY。 */
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_repositionMenuIndicator() {
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var menu = this._menu;
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var indicator = this._indicator;
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if (!menu || !indicator || !menu.classList.contains('liquid-menu-hovering'))
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return;
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var hovered = document.elementFromPoint(this._lastX, this._lastY);
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if (!hovered)
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return;
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var li = hovered.closest('ul.mainmenu.l1 > li');
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if (!li || li.classList.contains('selected')) {
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menu.classList.remove('liquid-menu-hovering');
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return;
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}
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var a = li.querySelector(':scope > a');
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if (!a)
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return;
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var menuRect = menu.getBoundingClientRect();
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var aRect = a.getBoundingClientRect();
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indicator.style.transform =
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'translateY(%dpx)'.format(aRect.top - menuRect.top + menu.scrollTop);
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indicator.style.height = '%dpx'.format(aRect.height);
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},
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handleMenuExpand(ev) {
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const a = ev.target;
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const li = a.parentNode;
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const ul1 = li.parentNode;
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const ul2 = a.nextElementSibling;
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/* 点击已展开的一级菜单 → 折叠（收起其子菜单） */
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if (li.classList.contains('active') && ul2 && ul2.children.length > 0) {
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li.classList.remove('active');
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a.blur();
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this._repositionMenuIndicator();
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ev.preventDefault();
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ev.stopPropagation();
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return;
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}
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/* 未展开：收起其他已展开的一级菜单，再展开当前 */
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document.querySelectorAll('ul.mainmenu.l1 > li.active').forEach(other => {
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if (other !== li)
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other.classList.remove('active');
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});
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if (!ul2)
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return;
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if (ul2.parentNode.offsetLeft + ul2.offsetWidth <= ul1.offsetLeft + ul1.offsetWidth)
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ul2.classList.add('align-left');
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ul1.classList.add('active');
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li.classList.add('active');
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a.blur();
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/* 展开/折叠后菜单项垂直位移，滑块位置需跟着更新 */
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this._repositionMenuIndicator();
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ev.preventDefault();
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ev.stopPropagation();
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},
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renderMainMenu(tree, url, level) {
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const l = (level || 0) + 1;
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const ul = E('ul', { 'class': 'mainmenu l%d'.format(l) });
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const children = ui.menu.getChildren(tree);
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if (children.length == 0 || l > 2)
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return E([]);
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children.forEach(child => {
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/* 当前所在一级菜单：高亮(selected)并展开其二级菜单(active)；
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其余一级菜单保持收起，点击才展开 */
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const isActive = (L.env.dispatchpath[l] == child.name);
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const activeClass = 'mainmenu-item-%s%s'.format(
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child.name, isActive ? ' selected active' : '');
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ul.appendChild(E('li', { 'class': activeClass }, [
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E('a', {
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'href': L.url(url, child.name),
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'data-title': child.title,
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'click': (l == 1) ? ui.createHandlerFn(this, 'handleMenuExpand') : ''
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}, [
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_(child.title)
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]),
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this.renderMainMenu(child, url + '/' + child.name, l)
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]));
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});
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if (l == 1)
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document.querySelector('#mainmenu').appendChild(E('div', [ ul ]));
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return ul;
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},
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renderModeMenu(tree) {
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const menu = document.querySelector('#modemenu');
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const children = ui.menu.getChildren(tree);
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children.forEach((child, index) => {
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const isActive = L.env.requestpath.length
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? child.name === L.env.requestpath[0]
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: index === 0;
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if (index > 0)
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menu.appendChild(E([], ['\u00a0|\u00a0']));
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menu.appendChild(E('div', { 'class': isActive ? 'active' : '' }, [
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E('a', { href: L.url(child.name) }, [
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_(child.title)
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])
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]));
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if (isActive)
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this.renderMainMenu(child, child.name);
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});
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if (menu.children.length > 1)
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menu.style.display = '';
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},
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renderTabMenu(tree, url, level) {
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const container = document.querySelector('#tabmenu');
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const l = (level || 0) + 1;
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const ul = E('ul', { 'class': 'cbi-tabmenu' });
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const children = ui.menu.getChildren(tree);
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let activeNode = null;
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if (children.length == 0)
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return E([]);
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children.forEach(child => {
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const isActive = (L.env.dispatchpath[l + 2] == child.name);
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const activeClass = isActive ? ' cbi-tab' : '';
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const className = 'tabmenu-item-%s %s'.format(child.name, activeClass);
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ul.appendChild(E('li', { 'class': className }, [
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E('a', { 'href': L.url(url, child.name) }, [
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_(child.title)
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])
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]));
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if (isActive)
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activeNode = child;
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});
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container.appendChild(ul);
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container.style.display = '';
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if (activeNode)
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container.appendChild(this.renderTabMenu(activeNode, url + '/' + activeNode.name, l));
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return ul;
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},
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handleSidebarToggle(ev) {
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const btn = ev.currentTarget;
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const bar = document.querySelector('#mainmenu');
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if (btn.classList.contains('active')) {
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btn.classList.remove('active');
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bar.classList.remove('active');
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}
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else {
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btn.classList.add('active');
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bar.classList.add('active');
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}
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}
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});
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