(function ($) { /** * The constructor of the dropdown object * @param {object} element The menu element. * @returns {object} The dropdown menu object. */ function um_dropdownMenu(element) { var self = { get: function(){ return self; }, show: function () { self.hideAll(); /* add dropdown into the */ self.$menu = self.$element.find('.um-new-dropdown'); if ( !self.$menu.length ) { self.$menu = $('div.um-new-dropdown[data-element="' + self.data.element + '"]').first(); } self.$dropdown = self.$menu.clone(); self.$dropdown.on('click', 'li a', self.itemHandler); /* add the handler for menu items */ $(window).on('resize', self.updatePosition); /* update the position on window resize */ $(document.body).append(self.$dropdown); /* trigger event */ self.$element.trigger('um_new_dropdown_render', { dropdown_layout: self.$dropdown, trigger: self.data.trigger, element: self.data.elemen, obj: self.$element }); /* set styles and show */ self.$dropdown.css(self.calculatePosition()).show(); self.$element.addClass('um-new-dropdown-shown').data('um-new-dropdown-show', true); return self; }, hide: function () { if ( self.$dropdown && self.$dropdown.is(':visible') ) { $(window).off('resize', self.updatePosition); self.$dropdown.remove(); self.$element.removeClass('um-new-dropdown-shown').data('um-new-dropdown-show', false); } return self; }, hideAll: function () { self.hide(); $('body > div.um-new-dropdown').remove(); $('.um-new-dropdown-shown').removeClass('um-new-dropdown-shown').data('um-new-dropdown-show', false); return self; }, calculatePosition: function () { var offset = self.$element.offset(), rect = self.$element.get(0).getBoundingClientRect(), height = self.$dropdown.innerHeight() || 150, width = self.data.width || 150, place = ''; var css = { position: 'absolute', width: width + 'px' }; /* vertical position */ if ( window.innerHeight - rect.bottom > height ) { css.top = offset.top + rect.height + 'px'; place += 'bottom'; } else { place += 'top'; css.top = offset.top - height + 'px'; } /* horisontal position */ if ( offset.left > width || offset.left > window.innerWidth / 2 ) { css.left = offset.left + rect.width - width + 'px'; place += '-left'; } else { css.left = offset.left + 'px'; place += '-right'; } /* border */ switch ( place ) { case 'bottom-right': css.borderRadius = '0px 5px 5px 5px'; break; case 'bottom-left': css.borderRadius = '5px 0px 5px 5px'; break; case 'top-right': css.borderRadius = '5px 5px 5px 0px'; break; case 'top-left': css.borderRadius = '5px 5px 0px 5px'; break; } return css; }, updatePosition: function () { if ( self.$dropdown && self.$dropdown.is(':visible') ) { self.$dropdown.css(self.calculatePosition()); } return self; }, itemHandler: function (e) { e.stopPropagation(); /* trigger 'click' in the original menu */ var attrClass = $(e.currentTarget).attr('class'); self.$menu.find('li a[class="' + attrClass + '"]').trigger('click'); /* hide dropdown */ self.hide(); }, triggerHandler: function (e) { e.stopPropagation(); self.$element = $(e.currentTarget); if ( self.$element.data('um-new-dropdown-show') ) { self.hide(); } else { self.show(); } } }; self.$menu = $(element); self.data = self.$menu.data(); self.$element = self.$menu.closest(self.data.element); if ( !self.$element.length ) { self.$element = $(self.data.element).first(); } self.$dropdown = $(document.body).children('div[data-element="' + self.data.element + '"]'); if ( typeof self.data.initted === 'undefined' ) { self.$menu.data('initted', true); $(document.body).on(self.data.trigger, self.data.element, self.triggerHandler); } if ( typeof um_dropdownMenu.globalHandlersInitted === 'undefined' ) { um_dropdownMenu.globalHandlersInitted = true; $(document.body).on('click', function (e) { if ( !$(e.target).closest('.um-new-dropdown').length ) { self.hideAll(); } }); } return self; } /* Add the method um_dropdownMenu() to the jQuery */ $.fn.um_dropdownMenu = function (action) { if ( typeof action === 'string' && action ) { return this.map( function (i, menu) { var obj = um_dropdownMenu( menu ); return typeof obj[action] === 'function' ? obj[action]() : obj[action]; } ).toArray(); } else { return this.each( function (i, menu) { um_dropdownMenu( menu ); } ); } }; })(jQuery); function um_init_new_dropdown() { jQuery('.um-new-dropdown').um_dropdownMenu(); } /* Init all dropdown menus on page load */ jQuery( document ).ready( function($) { um_init_new_dropdown(); });