luci-theme-bootstrap: rework menu rendering

Utilize the LuCI.ui.menu class to load, traverse and cache the menu tree
in the local session store.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

1 files changed, 118 insertions, 0 deletions

diff --git a/themes/luci-theme-bootstrap/htdocs/luci-static/resources/menu-bootstrap.js b/themes/luci-theme-bootstrap/htdocs/luci-static/resources/menu-bootstrap.js
new file mode 100644
index 0000000000..5400276b08
--- /dev/null
+++ b/themes/luci-theme-bootstrap/htdocs/luci-static/resources/menu-bootstrap.js
@@ -0,0 +1,118 @@
+'use strict';
+'require baseclass';
+'require ui';
+
+return baseclass.extend({
+	__init__: function() {
+		ui.menu.load().then(L.bind(this.render, this));
+	},
+
+	render: function(tree) {
+		var node = tree,
+		    url = '';
+
+		this.renderModeMenu(tree);
+
+		if (L.env.dispatchpath.length >= 3) {
+			for (var i = 0; i < 3 && node; i++) {
+				node = node.children[L.env.dispatchpath[i]];
+				url = url + (url ? '/' : '') + L.env.dispatchpath[i];
+			}
+
+			if (node)
+				this.renderTabMenu(node, url);
+		}
+
+		document.addEventListener('poll-start', this.handleBodyMargin);
+		document.addEventListener('poll-stop', this.handleBodyMargin);
+		document.addEventListener('uci-new-changes', this.handleBodyMargin);
+		document.addEventListener('uci-clear-changes', this.handleBodyMargin);
+		window.addEventListener('resize', this.handleBodyMargin);
+
+		this.handleBodyMargin();
+	},
+
+	renderTabMenu: function(tree, url, level) {
+		var container = document.querySelector('#tabmenu'),
+		    ul = E('ul', { 'class': 'tabs' }),
+		    children = ui.menu.getChildren(tree),
+		    activeNode = null;
+
+		for (var i = 0; i < children.length; i++) {
+			var isActive = (L.env.dispatchpath[3 + (level || 0)] == children[i].name),
+			    activeClass = isActive ? ' active' : '',
+			    className = 'tabmenu-item-%s %s'.format(children[i].name, activeClass);
+
+			ul.appendChild(E('li', { 'class': className }, [
+				E('a', { 'href': L.url(url, children[i].name) }, [ _(children[i].title) ] )]));
+
+			if (isActive)
+				activeNode = children[i];
+		}
+
+		if (ul.children.length == 0)
+			return E([]);
+
+		container.appendChild(ul);
+		container.style.display = '';
+
+		if (activeNode)
+			this.renderTabMenu(activeNode, url + '/' + activeNode.name, (level || 0) + 1);
+
+		return ul;
+	},
+
+	renderMainMenu: function(tree, url, level) {
+		var ul = level ? E('ul', { 'class': 'dropdown-menu' }) : document.querySelector('#topmenu'),
+		    children = ui.menu.getChildren(tree);
+
+		if (children.length == 0 || level > 1)
+			return E([]);
+
+		for (var i = 0; i < children.length; i++) {
+			var submenu = this.renderMainMenu(children[i], url + '/' + children[i].name, (level || 0) + 1),
+			    subclass = (!level && submenu.firstElementChild) ? 'dropdown' : null,
+			    linkclass = (!level && submenu.firstElementChild) ? 'menu' : null,
+			    linkurl = submenu.firstElementChild ? '#' : L.url(url, children[i].name);
+
+			var li = E('li', { 'class': subclass }, [
+				E('a', { 'class': linkclass, 'href': linkurl }, [ _(children[i].title) ]),
+				submenu
+			]);
+
+			ul.appendChild(li);
+		}
+
+		ul.style.display = '';
+
+		return ul;
+	},
+
+	renderModeMenu: function(tree) {
+		var ul = document.querySelector('#modemenu'),
+		    children = ui.menu.getChildren(tree);
+
+		for (var i = 0; i < children.length; i++) {
+			var isActive = (L.env.requestpath.length ? children[i].name == L.env.requestpath[0] : i == 0);
+
+			ul.appendChild(E('li', { 'class': isActive ? 'active' : null }, [
+				E('a', { 'href': L.url(children[i].name) }, [ _(children[i].title) ]),
+				' ',
+				E('span', { 'class': 'divider' }, [ '|' ])
+			]));
+
+			if (isActive)
+				this.renderMainMenu(children[i], children[i].name);
+		}
+
+		if (ul.children.length > 1)
+			ul.style.display = '';
+	},
+
+	handleBodyMargin: function(ev) {
+		var body = document.querySelector('body'),
+		    head = document.querySelector('header');
+
+		body.style.marginTop = head.offsetHeight + 'px';
+	}
+});