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>
[only render menu when logged in for 19.07]
(backported from commit 1ac8df2614)

themes/luci-theme-bootstrap/htdocs/luci-static/bootstrap/cascade.css

@@ -1787,6 +1787,7 @@ header [data-indicator] {
 	background-color: #bfbfbf;
 	border-radius: 3px;
 	text-shadow: none;
+	margin-left: .4em;
 }
 
 header [data-indicator][data-clickable] {
@@ -1822,10 +1823,6 @@ header [data-indicator][data-style="active"] {
 /* LuCI specific items */
 .hidden { display: none }
 
-#xhr_poll_status {
-	  cursor: pointer;
-}
-
 form.inline { display: inline; margin-bottom: 0; }
 
 header .pull-right { padding-top: 8px; }

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';
+	}
+});

themes/luci-theme-bootstrap/luasrc/view/themes/bootstrap/footer.htm

@@ -12,6 +12,9 @@
     <ul class="breadcrumb pull-right" id="modemenu" style="display:none"></ul>
    </footer>
   </div>
+  <% if luci.dispatcher.context.authsession then %>
+  <script type="text/javascript">L.require('menu-bootstrap')</script>
+  <% end %>
  </body>
 </html>
 

themes/luci-theme-bootstrap/luasrc/view/themes/bootstrap/header.htm

@@ -35,9 +35,6 @@
 		<% end -%>
 		<script src="<%=url('admin/translations', luci.i18n.context.lang)%><%# ?v=PKG_VERSION %>"></script>
 		<script src="<%=resource%>/cbi.js"></script>
-		<script src="<%=resource%>/xhr.js"></script>
-
-		<% include("themes/bootstrap/json-menu") %>
 	</head>
 
 	<body class="lang_<%=luci.i18n.context.lang%> <% if node then %><%= striptags( node.title ) %><%- end %>" data-page="<%= pcdata(table.concat(disp.context.requestpath, "-")) %>">
@@ -46,12 +43,7 @@
 				<div class="container">
 					<a class="brand" href="#"><%=boardinfo.hostname or "?"%></a>
 					<ul class="nav" id="topmenu" style="display:none"></ul>
-					<div id="indicators" class="pull-right">
+					<div id="indicators" class="pull-right"></div>
-						<span id="xhr_poll_status" style="display:none" onclick="XHR.running() ? XHR.halt() : XHR.run()">
-							<span class="label success" id="xhr_poll_status_on"><%:Auto Refresh%> <%:on%></span>
-							<span class="label" id="xhr_poll_status_off" style="display:none"><%:Auto Refresh%> <%:off%></span>
-						</span>
-					</div>
 				</div>
 			</div>
 		</header>

themes/luci-theme-bootstrap/luasrc/view/themes/bootstrap/json-menu.htm

@@ -1,134 +0,0 @@
-<script type="text/javascript">
-	(function() {
-		function get_children(node) {
-			var children = [];
-
-			for (var k in node.children) {
-				if (!node.children.hasOwnProperty(k))
-					continue;
-
-				if (!node.children[k].satisfied)
-					continue;
-
-				if (!node.children[k].hasOwnProperty('title'))
-					continue;
-
-				children.push(Object.assign(node.children[k], { name: k }));
-			}
-
-			return children.sort(function(a, b) {
-				return ((a.order || 1000) - (b.order || 1000));
-			});
-		}
-
-		function render_tabmenu(tree, url, level) {
-			var container = document.querySelector('#tabmenu'),
-			    ul = E('ul', { 'class': 'tabs' }),
-			    children = get_children(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)
-				render_tabmenu(activeNode, url + '/' + activeNode.name, (level || 0) + 1);
-
-			return ul;
-		}
-
-		function render_mainmenu(tree, url, level) {
-			var ul = level ? E('ul', { 'class': 'dropdown-menu' }) : document.querySelector('#topmenu'),
-			    children = get_children(tree);
-
-			if (children.length == 0 || level > 1)
-				return E([]);
-
-			for (var i = 0; i < children.length; i++) {
-				var submenu = render_mainmenu(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;
-		}
-
-		function render_modemenu(tree) {
-			var ul = document.querySelector('#modemenu'),
-			    children = get_children(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)
-					render_mainmenu(children[i], children[i].name);
-			}
-
-			if (ul.children.length > 1)
-				ul.style.display = '';
-		}
-
-		function adjust_body_margin(ev) {
-			var body = document.querySelector('body'),
-			    head = document.querySelector('header');
-
-			body.style.marginTop = head.offsetHeight + 'px';
-		}
-
-		document.addEventListener('luci-loaded', function(ev) {
-			var tree = <%= luci.http.write_json(luci.dispatcher.context.authsession and luci.dispatcher.menu_json() or {}) %>,
-			    node = tree,
-			    url = '';
-
-			render_modemenu(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)
-					render_tabmenu(node, url);
-			}
-
-			document.addEventListener('poll-start', adjust_body_margin);
-			document.addEventListener('poll-stop', adjust_body_margin);
-			document.addEventListener('uci-new-changes', adjust_body_margin);
-			document.addEventListener('uci-clear-changes', adjust_body_margin);
-			window.addEventListener('resize', adjust_body_margin);
-
-			adjust_body_margin(ev);
-		});
-	})();
-</script>