silverstripe-framework/admin/javascript/LeftAndMain.Menu.js

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JavaScript
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(function($) {
$.entwine('ss', function($){
/**
* Vertical CMS menu with two levels, built from a nested unordered list.
* The (optional) second level is collapsible, hiding its children.
* The whole menu (including second levels) is collapsible as well,
* exposing only a preview for every menu item in order to save space.
* In this "preview/collapsed" mode, the secondary menu hovers over the menu item,
* rather than expanding it.
*
* Example:
*
* <ul class="cms-menu-list">
* <li><a href="#">Item 1</a></li>
* <li class="current opened">
* <a href="#">Item 2</a>
* <ul>
* <li class="current opened"><a href="#">Item 2.1</a></li>
* <li><a href="#">Item 2.2</a></li>
* </ul>
* </li>
* </ul>
*/
$('.cms-menu-list').entwine({
onmatch: function() {
var self = this;
$('.cms-container').bind('afterstatechange', function(e, data) {
var controller = data.xhr.getResponseHeader('X-Controller');
if(controller) {
var item = self.find('li#Menu-' + controller);
if(!item.hasClass('current')) item.select();
}
});
// Sync collapsed state with parent panel
this.parents('.cms-panel:first').bind('toggle', function(e) {
self.toggleClass('collapsed', $(this).hasClass('collapsed'));
});
// Select default element (which might reveal children in hidden parents)
this.find('li.current').select();
this._super();
}
});
$('.cms-menu-list .toggle').entwine({
onclick: function(e) {
this.getMenuItem().toggle();
e.preventDefault();
}
});
$('.cms-menu-list li').entwine({
toggle: function() {
this[this.hasClass('opened') ? 'close' : 'open']();
},
open: function() {
var parent = this.getMenuItem();
if(parent) parent.open();
this.addClass('opened').find('ul').show();
},
close: function() {
this.removeClass('opened').find('ul').hide();
},
select: function() {
var parent = this.getMenuItem();
this.addClass('current').open();
// Remove "current" class from all siblings and their children
this.siblings().removeClass('current').close();
this.siblings().find('li').removeClass('current');
if(parent) parent.addClass('current').siblings().removeClass('current');
this.trigger('select');
}
});
$('.cms-menu-list li *').entwine({
getMenuItem: function() {
return this.parents('li:first');
}
});
/**
* Both primary and secondary nav.
*/
$('.cms-menu-list li a').entwine({
onclick: function(e) {
// Only catch left clicks, in order to allow opening in tabs.
// Ignore external links, fallback to standard link behaviour
if(e.which > 1 || this.is(':external')) return;
e.preventDefault();
// Expand this, and collapse all other items
var item = this.getMenuItem();
item.select();
var children = item.find('li');
if(children.length) {
children.first().find('a').click();
} else {
// Active menu item is set based on X-Controller ajax header,
// which matches one class on the menu
window.History.pushState({}, '', this.attr('href'));
}
}
});
});
// Internal Helper
$.expr[':'].internal = function(obj){return obj.href.match(/^mailto\:/) || (obj.hostname == location.hostname);};
$.expr[':'].external = function(obj){return !$(obj).is(':internal')};
}(jQuery));