585 lines
20 KiB
JavaScript
585 lines
20 KiB
JavaScript
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;(function ($, document, window) {
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var
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// default settings object.
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defaults = {
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label: 'MENU',
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duplicate: true,
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duration: 200,
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easingOpen: 'swing',
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easingClose: 'swing',
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closedSymbol: '►',
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openedSymbol: '▼',
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prependTo: 'body',
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appendTo: '',
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parentTag: 'a',
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closeOnClick: false,
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allowParentLinks: false,
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nestedParentLinks: true,
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showChildren: false,
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removeIds: true,
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removeClasses: false,
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removeStyles: false,
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brand: '',
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animations: 'jquery',
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init: function () {},
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beforeOpen: function () {},
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beforeClose: function () {},
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afterOpen: function () {},
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afterClose: function () {}
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},
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mobileMenu = 'slicknav',
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prefix = 'slicknav',
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Keyboard = {
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DOWN: 40,
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ENTER: 13,
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ESCAPE: 27,
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LEFT: 37,
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RIGHT: 39,
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SPACE: 32,
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TAB: 9,
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UP: 38,
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};
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function Plugin(element, options) {
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this.element = element;
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// jQuery has an extend method which merges the contents of two or
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// more objects, storing the result in the first object. The first object
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// is generally empty as we don't want to alter the default options for
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// future instances of the plugin
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this.settings = $.extend({}, defaults, options);
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// Don't remove IDs by default if duplicate is false
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if (!this.settings.duplicate && !options.hasOwnProperty("removeIds")) {
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this.settings.removeIds = false;
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}
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this._defaults = defaults;
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this._name = mobileMenu;
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this.init();
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}
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Plugin.prototype.init = function () {
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var $this = this,
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menu = $(this.element),
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settings = this.settings,
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iconClass,
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menuBar;
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// clone menu if needed
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if (settings.duplicate) {
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$this.mobileNav = menu.clone();
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} else {
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$this.mobileNav = menu;
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}
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// remove IDs if set
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if (settings.removeIds) {
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$this.mobileNav.removeAttr('id');
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$this.mobileNav.find('*').each(function (i, e) {
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$(e).removeAttr('id');
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});
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}
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// remove classes if set
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if (settings.removeClasses) {
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$this.mobileNav.removeAttr('class');
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$this.mobileNav.find('*').each(function (i, e) {
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$(e).removeAttr('class');
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});
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}
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// remove styles if set
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if (settings.removeStyles) {
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$this.mobileNav.removeAttr('style');
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$this.mobileNav.find('*').each(function (i, e) {
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$(e).removeAttr('style');
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});
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}
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// styling class for the button
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iconClass = prefix + '_icon';
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if (settings.label === '') {
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iconClass += ' ' + prefix + '_no-text';
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}
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if (settings.parentTag == 'a') {
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settings.parentTag = 'a href="#"';
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}
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// create menu bar
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$this.mobileNav.attr('class', prefix + '_nav');
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menuBar = $('<div class="' + prefix + '_menu"></div>');
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if (settings.brand !== '') {
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var brand = $('<div class="' + prefix + '_brand">'+settings.brand+'</div>');
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$(menuBar).append(brand);
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}
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$this.btn = $(
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['<' + settings.parentTag + ' aria-haspopup="true" role="button" tabindex="0" class="' + prefix + '_btn ' + prefix + '_collapsed">',
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'<span class="' + prefix + '_menutxt">' + settings.label + '</span>',
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'<span class="' + iconClass + '">',
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'<span class="' + prefix + '_icon-bar"></span>',
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'<span class="' + prefix + '_icon-bar"></span>',
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'<span class="' + prefix + '_icon-bar"></span>',
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'</span>',
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'</' + settings.parentTag + '>'
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].join('')
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);
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$(menuBar).append($this.btn);
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if(settings.appendTo !== '') {
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$(settings.appendTo).append(menuBar);
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} else {
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$(settings.prependTo).prepend(menuBar);
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}
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menuBar.append($this.mobileNav);
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// iterate over structure adding additional structure
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var items = $this.mobileNav.find('li');
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$(items).each(function () {
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var item = $(this),
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data = {};
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data.children = item.children('ul').attr('role', 'menu');
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item.data('menu', data);
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// if a list item has a nested menu
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if (data.children.length > 0) {
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// select all text before the child menu
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// check for anchors
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var a = item.contents(),
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containsAnchor = false,
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nodes = [];
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$(a).each(function () {
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if (!$(this).is('ul')) {
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nodes.push(this);
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} else {
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return false;
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}
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if($(this).is("a")) {
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containsAnchor = true;
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}
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});
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var wrapElement = $(
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'<' + settings.parentTag + ' role="menuitem" aria-haspopup="true" tabindex="-1" class="' + prefix + '_item"/>'
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);
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// wrap item text with tag and add classes unless we are separating parent links
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if ((!settings.allowParentLinks || settings.nestedParentLinks) || !containsAnchor) {
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var $wrap = $(nodes).wrapAll(wrapElement).parent();
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$wrap.addClass(prefix+'_row');
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} else
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$(nodes).wrapAll('<span class="'+prefix+'_parent-link '+prefix+'_row"/>').parent();
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if (!settings.showChildren) {
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item.addClass(prefix+'_collapsed');
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} else {
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item.addClass(prefix+'_open');
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}
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item.addClass(prefix+'_parent');
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// create parent arrow. wrap with link if parent links and separating
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var arrowElement = $('<span class="'+prefix+'_arrow">'+(settings.showChildren?settings.openedSymbol:settings.closedSymbol)+'</span>');
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if (settings.allowParentLinks && !settings.nestedParentLinks && containsAnchor)
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arrowElement = arrowElement.wrap(wrapElement).parent();
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//append arrow
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$(nodes).last().after(arrowElement);
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} else if ( item.children().length === 0) {
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item.addClass(prefix+'_txtnode');
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}
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// accessibility for links
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item.children('a').attr('role', 'menuitem').click(function(event){
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//Ensure that it's not a parent
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if (settings.closeOnClick && !$(event.target).parent().closest('li').hasClass(prefix+'_parent')) {
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//Emulate menu close if set
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$($this.btn).click();
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}
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});
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//also close on click if parent links are set
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if (settings.closeOnClick && settings.allowParentLinks) {
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item.children('a').children('a').click(function (event) {
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//Emulate menu close
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$($this.btn).click();
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});
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item.find('.'+prefix+'_parent-link a:not(.'+prefix+'_item)').click(function(event){
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//Emulate menu close
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$($this.btn).click();
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});
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}
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});
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// structure is in place, now hide appropriate items
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$(items).each(function () {
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var data = $(this).data('menu');
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if (!settings.showChildren){
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$this._visibilityToggle(data.children, null, false, null, true);
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}
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});
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// finally toggle entire menu
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$this._visibilityToggle($this.mobileNav, null, false, 'init', true);
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// accessibility for menu button
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$this.mobileNav.attr('role','menu');
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// outline prevention when using mouse
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$(document).mousedown(function(){
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$this._outlines(false);
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});
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$(document).keyup(function(){
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$this._outlines(true);
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});
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// menu button click
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$($this.btn).click(function (e) {
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e.preventDefault();
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$this._menuToggle();
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});
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// click on menu parent
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$this.mobileNav.on('click', '.' + prefix + '_item', function (e) {
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e.preventDefault();
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$this._itemClick($(this));
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});
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// check for keyboard events on menu button and menu parents
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$($this.btn).keydown(function (e) {
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var ev = e || event;
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switch(ev.keyCode) {
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case Keyboard.ENTER:
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case Keyboard.SPACE:
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case Keyboard.DOWN:
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e.preventDefault();
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if (ev.keyCode !== Keyboard.DOWN || !$($this.btn).hasClass(prefix+'_open')){
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$this._menuToggle();
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}
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$($this.btn).next().find('[role="menuitem"]').first().focus();
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break;
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}
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});
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$this.mobileNav.on('keydown', '.'+prefix+'_item', function(e) {
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var ev = e || event;
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switch(ev.keyCode) {
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case Keyboard.ENTER:
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e.preventDefault();
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$this._itemClick($(e.target));
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break;
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case Keyboard.RIGHT:
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e.preventDefault();
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if ($(e.target).parent().hasClass(prefix+'_collapsed')) {
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$this._itemClick($(e.target));
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}
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$(e.target).next().find('[role="menuitem"]').first().focus();
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break;
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}
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});
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$this.mobileNav.on('keydown', '[role="menuitem"]', function(e) {
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var ev = e || event;
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switch(ev.keyCode){
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case Keyboard.DOWN:
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e.preventDefault();
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var allItems = $(e.target).parent().parent().children().children('[role="menuitem"]:visible');
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var idx = allItems.index( e.target );
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var nextIdx = idx + 1;
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if (allItems.length <= nextIdx) {
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nextIdx = 0;
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}
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var next = allItems.eq( nextIdx );
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next.focus();
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break;
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case Keyboard.UP:
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e.preventDefault();
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var allItems = $(e.target).parent().parent().children().children('[role="menuitem"]:visible');
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var idx = allItems.index( e.target );
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var next = allItems.eq( idx - 1 );
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next.focus();
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break;
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case Keyboard.LEFT:
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e.preventDefault();
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if ($(e.target).parent().parent().parent().hasClass(prefix+'_open')) {
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var parent = $(e.target).parent().parent().prev();
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parent.focus();
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$this._itemClick(parent);
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} else if ($(e.target).parent().parent().hasClass(prefix+'_nav')){
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$this._menuToggle();
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$($this.btn).focus();
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}
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break;
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case Keyboard.ESCAPE:
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e.preventDefault();
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$this._menuToggle();
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$($this.btn).focus();
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break;
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}
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});
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// allow links clickable within parent tags if set
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if (settings.allowParentLinks && settings.nestedParentLinks) {
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$('.'+prefix+'_item a').click(function(e){
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e.stopImmediatePropagation();
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});
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}
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};
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//toggle menu
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Plugin.prototype._menuToggle = function (el) {
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var $this = this;
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var btn = $this.btn;
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var mobileNav = $this.mobileNav;
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if (btn.hasClass(prefix+'_collapsed')) {
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btn.removeClass(prefix+'_collapsed');
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btn.addClass(prefix+'_open');
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} else {
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btn.removeClass(prefix+'_open');
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btn.addClass(prefix+'_collapsed');
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}
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btn.addClass(prefix+'_animating');
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$this._visibilityToggle(mobileNav, btn.parent(), true, btn);
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};
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// toggle clicked items
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Plugin.prototype._itemClick = function (el) {
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var $this = this;
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var settings = $this.settings;
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var data = el.data('menu');
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if (!data) {
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data = {};
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data.arrow = el.children('.'+prefix+'_arrow');
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data.ul = el.next('ul');
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data.parent = el.parent();
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//Separated parent link structure
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if (data.parent.hasClass(prefix+'_parent-link')) {
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data.parent = el.parent().parent();
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data.ul = el.parent().next('ul');
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}
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el.data('menu', data);
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}
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if (data.parent.hasClass(prefix+'_collapsed')) {
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data.arrow.html(settings.openedSymbol);
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data.parent.removeClass(prefix+'_collapsed');
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data.parent.addClass(prefix+'_open');
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data.parent.addClass(prefix+'_animating');
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$this._visibilityToggle(data.ul, data.parent, true, el);
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} else {
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data.arrow.html(settings.closedSymbol);
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data.parent.addClass(prefix+'_collapsed');
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data.parent.removeClass(prefix+'_open');
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data.parent.addClass(prefix+'_animating');
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$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;
|
||
|
|
}
|
||
|
|
|
||
|
|
function afterOpen(trigger, parent) {
|
||
|
|
$(trigger).removeClass(prefix+'_animating');
|
||
|
|
$(parent).removeClass(prefix+'_animating');
|
||
|
|
|
||
|
|
//Fire afterOpen callback
|
||
|
|
if (!init) {
|
||
|
|
settings.afterOpen(trigger);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function afterClose(trigger, parent) {
|
||
|
|
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 afterClose callback
|
||
|
|
if (!init){
|
||
|
|
settings.afterClose(trigger);
|
||
|
|
} else if (trigger == 'init'){
|
||
|
|
settings.init();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (el.hasClass(prefix+'_hidden')) {
|
||
|
|
el.removeClass(prefix+'_hidden');
|
||
|
|
//Fire beforeOpen callback
|
||
|
|
if (!init) {
|
||
|
|
settings.beforeOpen(trigger);
|
||
|
|
}
|
||
|
|
if (settings.animations === 'jquery') {
|
||
|
|
el.stop(true,true).slideDown(duration, settings.easingOpen, function(){
|
||
|
|
afterOpen(trigger, parent);
|
||
|
|
});
|
||
|
|
} else if(settings.animations === 'velocity') {
|
||
|
|
el.velocity("finish").velocity("slideDown", {
|
||
|
|
duration: duration,
|
||
|
|
easing: settings.easingOpen,
|
||
|
|
complete: function() {
|
||
|
|
afterOpen(trigger, parent);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
el.attr('aria-hidden','false');
|
||
|
|
items.attr('tabindex', '0');
|
||
|
|
$this._setVisAttr(el, false);
|
||
|
|
} else {
|
||
|
|
el.addClass(prefix+'_hidden');
|
||
|
|
|
||
|
|
//Fire init or beforeClose callback
|
||
|
|
if (!init){
|
||
|
|
settings.beforeClose(trigger);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (settings.animations === 'jquery') {
|
||
|
|
el.stop(true,true).slideUp(duration, this.settings.easingClose, function() {
|
||
|
|
afterClose(trigger, parent)
|
||
|
|
});
|
||
|
|
} else if (settings.animations === 'velocity') {
|
||
|
|
|
||
|
|
el.velocity("finish").velocity("slideUp", {
|
||
|
|
duration: duration,
|
||
|
|
easing: settings.easingClose,
|
||
|
|
complete: function() {
|
||
|
|
afterClose(trigger, parent);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
// 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));
|