/*! SlickNav Responsive Mobile Menu v1.0.1 (c) 2014 Josh Cope licensed under MIT */ ;(function ($, document, window) { var // default settings object. defaults = { label: 'MENU', duplicate: true, duration: 200, easingOpen: 'swing', easingClose: 'swing', closedSymbol: '►', openedSymbol: '▼', prependTo: 'body', parentTag: 'a', closeOnClick: false, allowParentLinks: false, nestedParentLinks: true, showChildren: false, init: function () {}, open: function () {}, close: function () {} }, mobileMenu = 'slicknav', prefix = 'slicknav'; function Plugin(element, options) { this.element = element; // jQuery has an extend method which merges the contents of two or // more objects, storing the result in the first object. The first object // is generally empty as we don't want to alter the default options for // future instances of the plugin this.settings = $.extend({}, defaults, options); this._defaults = defaults; this._name = mobileMenu; this.init(); } Plugin.prototype.init = function () { var $this = this, menu = $(this.element), settings = this.settings, iconClass, menuBar; // clone menu if needed if (settings.duplicate) { $this.mobileNav = menu.clone(); //remove ids from clone to prevent css issues $this.mobileNav.removeAttr('id'); $this.mobileNav.find('*').each(function (i, e) { $(e).removeAttr('id'); }); } else { $this.mobileNav = menu; } // styling class for the button iconClass = prefix + '_icon'; if (settings.label === '') { iconClass += ' ' + prefix + '_no-text'; } if (settings.parentTag == 'a') { settings.parentTag = 'a href="#"'; } // create menu bar $this.mobileNav.attr('class', prefix + '_nav'); menuBar = $('
'); $this.btn = $( ['<' + settings.parentTag + ' aria-haspopup="true" tabindex="0" class="' + prefix + '_btn ' + prefix + '_collapsed">', '' + settings.label + '', '', '', '', '', '', '' ].join('') ); $(menuBar).append($this.btn); $(settings.prependTo).prepend(menuBar); menuBar.append($this.mobileNav); // iterate over structure adding additional structure var items = $this.mobileNav.find('li'); $(items).each(function () { var item = $(this), data = {}; data.children = item.children('ul').attr('role', 'menu'); item.data('menu', data); // if a list item has a nested menu if (data.children.length > 0) { // select all text before the child menu // check for anchors var a = item.contents(), containsAnchor = false; nodes = []; $(a).each(function () { if (!$(this).is('ul')) { nodes.push(this); } else { return false; } if($(this).is("a")) { containsAnchor = true; } }); var wrapElement = $( '<' + settings.parentTag + ' role="menuitem" aria-haspopup="true" tabindex="-1" class="' + prefix + '_item"/>' ); // wrap item text with tag and add classes unless we are separating parent links if ((!settings.allowParentLinks || settings.nestedParentLinks) || !containsAnchor) { var $wrap = $(nodes).wrapAll(wrapElement).parent(); $wrap.addClass(prefix+'_row'); } else $(nodes).wrapAll('').parent(); item.addClass(prefix+'_collapsed'); item.addClass(prefix+'_parent'); // create parent arrow. wrap with link if parent links and separating var arrowElement = $(''+settings.closedSymbol+''); if (settings.allowParentLinks && !settings.nestedParentLinks && containsAnchor) arrowElement = arrowElement.wrap(wrapElement).parent(); //append arrow $(nodes).last().after(arrowElement); } else if ( item.children().length === 0) { item.addClass(prefix+'_txtnode'); } // accessibility for links item.children('a').attr('role', 'menuitem').click(function(event){ //Ensure that it's not a parent if (settings.closeOnClick && !$(event.target).parent().closest('li').hasClass(prefix+'_parent')) { //Emulate menu close if set $($this.btn).click(); } }); //also close on click if parent links are set if (settings.closeOnClick && settings.allowParentLinks) { item.children('a').children('a').click(function (event) { //Emulate menu close $($this.btn).click(); }); item.find('.'+prefix+'_parent-link a:not(.'+prefix+'_item)').click(function(event){ //Emulate menu close $($this.btn).click(); }); } }); // structure is in place, now hide appropriate items $(items).each(function () { var data = $(this).data('menu'); if (!settings.showChildren){ $this._visibilityToggle(data.children, null, false, null, true); } }); // finally toggle entire menu $this._visibilityToggle($this.mobileNav, null, false, 'init', true); // accessibility for menu button $this.mobileNav.attr('role','menu'); // outline prevention when using mouse $(document).mousedown(function(){ $this._outlines(false); }); $(document).keyup(function(){ $this._outlines(true); }); // menu button click $($this.btn).click(function (e) { e.preventDefault(); $this._menuToggle(); }); // click on menu parent $this.mobileNav.on('click', '.' + prefix + '_item', function (e) { e.preventDefault(); $this._itemClick($(this)); }); // check for enter key on menu button and menu parents $($this.btn).keydown(function (e) { var ev = e || event; if(ev.keyCode == 13) { e.preventDefault(); $this._menuToggle(); } }); $this.mobileNav.on('keydown', '.'+prefix+'_item', function(e) { var ev = e || event; if(ev.keyCode == 13) { e.preventDefault(); $this._itemClick($(e.target)); } }); // allow links clickable within parent tags if set if (settings.allowParentLinks && settings.nestedParentLinks) { $('.'+prefix+'_item a').click(function(e){ e.stopImmediatePropagation(); }); } }; //toggle menu Plugin.prototype._menuToggle = function (el) { var $this = this; var btn = $this.btn; var mobileNav = $this.mobileNav; if (btn.hasClass(prefix+'_collapsed')) { btn.removeClass(prefix+'_collapsed'); btn.addClass(prefix+'_open'); } else { btn.removeClass(prefix+'_open'); btn.addClass(prefix+'_collapsed'); } btn.addClass(prefix+'_animating'); $this._visibilityToggle(mobileNav, btn.parent(), true, btn); }; // toggle clicked items Plugin.prototype._itemClick = function (el) { var $this = this; var settings = $this.settings; var data = el.data('menu'); if (!data) { data = {}; data.arrow = el.children('.'+prefix+'_arrow'); data.ul = el.next('ul'); data.parent = el.parent(); //Separated parent link structure if (data.parent.hasClass(prefix+'_parent-link')) { data.parent = el.parent().parent(); data.ul = el.parent().next('ul'); } el.data('menu', data); } if (data.parent.hasClass(prefix+'_collapsed')) { data.arrow.html(settings.openedSymbol); data.parent.removeClass(prefix+'_collapsed'); data.parent.addClass(prefix+'_open'); data.parent.addClass(prefix+'_animating'); $this._visibilityToggle(data.ul, data.parent, true, el); } else { data.arrow.html(settings.closedSymbol); data.parent.addClass(prefix+'_collapsed'); data.parent.removeClass(prefix+'_open'); data.parent.addClass(prefix+'_animating'); $this._visibilityToggle(data.ul, data.parent, true, el); } }; // toggle actual visibility and accessibility tags Plugin.prototype._visibilityToggle = function(el, parent, animate, trigger, init) { var $this = this; var settings = $this.settings; var items = $this._getActionItems(el); var duration = 0; if (animate) { duration = settings.duration; } if (el.hasClass(prefix+'_hidden')) { el.removeClass(prefix+'_hidden'); el.slideDown(duration, settings.easingOpen, function(){ $(trigger).removeClass(prefix+'_animating'); $(parent).removeClass(prefix+'_animating'); //Fire open callback if (!init) { settings.open(trigger); } }); el.attr('aria-hidden','false'); items.attr('tabindex', '0'); $this._setVisAttr(el, false); } else { el.addClass(prefix+'_hidden'); el.slideUp(duration, this.settings.easingClose, function() { el.attr('aria-hidden','true'); items.attr('tabindex', '-1'); $this._setVisAttr(el, true); el.hide(); //jQuery 1.7 bug fix $(trigger).removeClass(prefix+'_animating'); $(parent).removeClass(prefix+'_animating'); //Fire init or close callback if (!init){ settings.close(trigger); } else if (trigger == 'init'){ settings.init(); } }); } }; // set attributes of element and children based on visibility Plugin.prototype._setVisAttr = function(el, hidden) { var $this = this; // select all parents that aren't hidden var nonHidden = el.children('li').children('ul').not('.'+prefix+'_hidden'); // iterate over all items setting appropriate tags if (!hidden) { nonHidden.each(function(){ var ul = $(this); ul.attr('aria-hidden','false'); var items = $this._getActionItems(ul); items.attr('tabindex', '0'); $this._setVisAttr(ul, hidden); }); } else { nonHidden.each(function(){ var ul = $(this); ul.attr('aria-hidden','true'); var items = $this._getActionItems(ul); items.attr('tabindex', '-1'); $this._setVisAttr(ul, hidden); }); } }; // get all 1st level items that are clickable Plugin.prototype._getActionItems = function(el) { var data = el.data("menu"); if (!data) { data = {}; var items = el.children('li'); var anchors = items.find('a'); data.links = anchors.add(items.find('.'+prefix+'_item')); el.data('menu', data); } return data.links; }; Plugin.prototype._outlines = function(state) { if (!state) { $('.'+prefix+'_item, .'+prefix+'_btn').css('outline','none'); } else { $('.'+prefix+'_item, .'+prefix+'_btn').css('outline',''); } }; Plugin.prototype.toggle = function(){ var $this = this; $this._menuToggle(); }; Plugin.prototype.open = function(){ var $this = this; if ($this.btn.hasClass(prefix+'_collapsed')) { $this._menuToggle(); } }; Plugin.prototype.close = function(){ var $this = this; if ($this.btn.hasClass(prefix+'_open')) { $this._menuToggle(); } }; $.fn[mobileMenu] = function ( options ) { var args = arguments; // Is the first parameter an object (options), or was omitted, instantiate a new instance if (options === undefined || typeof options === 'object') { return this.each(function () { // Only allow the plugin to be instantiated once due to methods if (!$.data(this, 'plugin_' + mobileMenu)) { // if it has no instance, create a new one, pass options to our plugin constructor, // and store the plugin instance in the elements jQuery data object. $.data(this, 'plugin_' + mobileMenu, new Plugin( this, options )); } }); // If is a string and doesn't start with an underscore or 'init' function, treat this as a call to a public method. } else if (typeof options === 'string' && options[0] !== '_' && options !== 'init') { // Cache the method call to make it possible to return a value var returns; this.each(function () { var instance = $.data(this, 'plugin_' + mobileMenu); // Tests that there's already a plugin-instance and checks that the requested public method exists if (instance instanceof Plugin && typeof instance[options] === 'function') { // Call the method of our plugin instance, and pass it the supplied arguments. returns = instance[options].apply( instance, Array.prototype.slice.call( args, 1 ) ); } }); // If the earlier cached method gives a value back return the value, otherwise return this to preserve chainability. return returns !== undefined ? returns : this; } }; }(jQuery, document, window));