jQuery( function() {
	var selectors_array = [];
	jQuery( '.learndash-binary-selector' ).each( function() {
		var selector_id = jQuery( this ).prop( 'id' );
		if ( typeof selector_id !== 'undefined' ) {
			selectors_array[selector_id] = new learndash_binary_selector( this );
			selectors_array[selector_id].init();
		}
	} );
} );

function learndash_binary_selector( selector_div ) {
	var self = this;

	self.selector_div = selector_div;
	self.selector_id = jQuery( self.selector_div ).prop( 'id' );
	self.nonce = jQuery( self.selector_div ).data( 'nonce' );
	self.selected_items = {};

	self.selector_data_loaded = false;
	self.selector_data = [];

	this.init = function() {
		self.get_selector_data( true );
		self.get_selector_form_element();
		self.update_legend();

		self.init_actions();
		self.init_pager();
		self.init_search();
		//self.init_lazy_load();
	};

	this.init_actions = function() {
		jQuery( '.learndash-binary-selector-section-middle', self.selector_div ).on( 'click', 'a.learndash-binary-selector-button-add', self.add_selected_items );
		jQuery( '.learndash-binary-selector-section-middle', self.selector_div ).on( 'click', 'a.learndash-binary-selector-button-remove', self.remove_selected_items );
	};

	this.init_pager = function() {
		if ( jQuery( 'ul.learndash-binary-selector-pager', self.selector_div ).length ) {
			jQuery( 'ul.learndash-binary-selector-pager', self.selector_div ).each( function( e ) {
				var section_pager_el = this;

				if ( jQuery( section_pager_el ).hasClass( 'learndash-binary-selector-pager-left' ) ) {
					var position = 'left';
				} else if ( jQuery( section_pager_el ).hasClass( 'learndash-binary-selector-pager-right' ) ) {
					var position = 'right';
				}

				if ( typeof position !== 'undefined' ) {
					if ( ( typeof self.selector_data[position] !== 'undefined' ) && ( typeof self.selector_data[position].pager !== 'undefined' ) ) {
						self.update_pager( section_pager_el, self.selector_data[position].pager );
					}
				}
			} );

			jQuery( '.learndash-binary-selector-section ul.learndash-binary-selector-pager a', self.selector_div ).on( 'click', function( e ) {
				e.preventDefault();
				self.handle_pager( this );
			} );
		}
	};

	this.init_search = function() {
		if ( jQuery( '.learndash-binary-selector-search', self.selector_div ).length ) {
			// Hold reference to our interval loop for key press
			var interval_ref;

			// We setup a search values object which will hold the left and right side searcheds. This will allow
			// dual search on left and right without loosing our settings.
			var search_values = {};

			// Set time for .20 seconds. 1/5 of a second.
			var search_timeout = 200;

			// Activate logic on fucus.
			jQuery( '.learndash-binary-selector-search', self.selector_div ).on( 'focus', function() {
				var search_el = this;

				var section_el = self.get_section_el( search_el );
				if ( typeof section_el === 'undefined' ) {
					return;
				}
				var selector_html_id = jQuery( self.selector_div ).attr( 'id' );
				if ( typeof selector_html_id === 'undefined' ) {
					return;
				}

				if ( jQuery( search_el ).hasClass( 'learndash-binary-selector-search-left' ) ) {
					var position = 'left';
				} else if ( jQuery( search_el	).hasClass( 'learndash-binary-selector-search-right' ) ) {
					var position = 'right';
				} else {
					return;
				}
				search_values[position] = {};
				search_values[position].query_data = {};

				//search_values[position] = position;

				if ( typeof self.selector_data[position] === 'undefined' ) {
					return;
				}

				if ( typeof self.selector_data.selector_class === 'undefined' ) {
					return;
				}

				if ( typeof self.selector_data.selector_nonce === 'undefined' ) {
					return;
				}

				if ( typeof self.selector_data.query_vars === 'undefined' ) {
					return;
				}

				// Copy our query vars from the section data element. Will be used as a starting point for the search queries
				search_values[position].query_data.query_vars = self.selector_data.query_vars;

				// Set and clear the search query var. Will be used to hold the search value passed via AJAX
				//search_values[position]['query_data']['query_vars']['search'] = '';

				search_values[position].query_data.position = position;
				search_values[position].query_data.selector_class = self.selector_data.selector_class;
				search_values[position].query_data.selector_nonce = self.selector_data.selector_nonce;
				search_values[position].selector_html_id = selector_html_id;

				search_values[position].query_data.selected_ids = self.get_selector_form_element( true );

				// Grab the current value of the search input and store it as part of our data.
				search_values[position].current_value = jQuery( search_el ).val();

				//--------------

				if ( interval_ref != '' ) {
					clearInterval( interval_ref );
				}

				interval_ref = setInterval( function() {
					search_values[position].current_value = jQuery( search_el ).val();

					// If search was cleared we need to reset the display to show the regular non-search items
					if ( search_values[position].current_value == '' ) {
						if ( search_values[position].query_data.query_vars.search != search_values[position].current_value ) {
							search_values[position].query_data.query_vars.search = search_values[position].current_value;

							// Reset our query vars to the existing values.
							search_values[position].query_data.query_vars = self.selector_data.query_vars;
							search_values[position].query_data.query_vars.search = '';

							var post_data = {
								action: 'learndash_binary_selector_pager',
								nonce: self.nonce,
								query_data: search_values[position].query_data,
							};

							jQuery.ajax( {
								type: 'POST',
								url: ajaxurl,
								dataType: 'json',
								cache: false,
								data: post_data,
								error: function( jqXHR, textStatus, errorThrown ) {
									//console.log('init: error HTTP Status['+jqXHR.status+'] '+errorThrown);
								},
								success: function( reply_data ) {
									if ( typeof reply_data.html_options !== 'undefined' ) {
										jQuery( '.learndash-binary-selector-items', section_el ).empty().append( reply_data.html_options );
									}
									var section_pager_el = jQuery( 'ul.learndash-binary-selector-pager', section_el );
									if ( typeof section_pager_el !== 'undefined' ) {
										jQuery( section_pager_el ).show();
										if ( typeof reply_data.pager !== 'undefined' ) {
											self.selector_data[position].pager = reply_data.pager;
											self.update_pager( section_pager_el, self.selector_data[position].pager );
											self.update_legend();
										}
									}
								},
							} );

							//if (jQuery('.learndash-binary-selector-pager', section_el).length) {
							//	jQuery('.learndash-binary-selector-pager', section_el).show();
							//}
						}
					} else {
						//if (jQuery('.learndash-binary-selector-pager', section_el).length) {
						//	jQuery('.learndash-binary-selector-pager', section_el).hide();
						//}

						if ( ( search_values[position].current_value.length >= 3 ) && ( search_values[position].query_data.query_vars.search != search_values[position].current_value ) ) {
							search_values[position].query_data.query_vars.search = search_values[position].current_value;

							//query_data_parsed['data_query']['s'] = search_value;
							search_values[position].query_data.query_vars.paged = 1;
							//search_values[position]['query_data']['query_vars']['search'] = search_value;

							var post_data = {
								action: 'learndash_binary_selector_pager',
								nonce: self.nonce,
								query_data: search_values[position].query_data,
							};

							jQuery.ajax( {
								type: 'POST',
								url: ajaxurl,
								dataType: 'json',
								cache: false,
								data: post_data,
								error: function( jqXHR, textStatus, errorThrown ) {
									//console.log('init: error HTTP Status['+jqXHR.status+'] '+errorThrown);
								},
								success: function( reply_data ) {
									if ( typeof reply_data.html_options !== 'undefined' ) {
										jQuery( '.learndash-binary-selector-items', section_el ).empty().append( reply_data.html_options );
									} else {
										jQuery( '.learndash-binary-selector-items', section_el ).empty().append( '' );
									}

									if ( typeof reply_data.pager !== 'undefined' ) {
										var section_pager_el = jQuery( '.learndash-binary-selector-pager', section_el );
										if ( typeof section_pager_el !== 'undefined' ) {
											jQuery( section_pager_el ).show();
											self.selector_data[position].pager = reply_data.pager;
											self.update_pager( section_pager_el, reply_data.pager );
											self.update_legend();
										}
									} else {
										var section_pager_el = jQuery( '.learndash-binary-selector-pager', section_el );
										jQuery( section_pager_el ).hide();
									}
								},
							} );
						}

						if ( ! jQuery( '.learndash-binary-selector-search', self.section_el ).is( ':focus' ) ) {
							clearInterval( interval_ref );
						}
					}
				}, search_timeout );
			} );
		}
	};

	this.update_legend = function() {
		var options_size = jQuery( 'select.learndash-binary-selector-items-left option', self.selector_div ).length;
		jQuery( '.learndash-binary-selector-legend-left span.items-total-count', self.selector_div ).html( options_size );

		//var total_items_count = self.get_selector_data_element('total_items');
		//jQuery('.learndash-binary-selector-legend-left span.items-total-count', self.selector_div).html(total_items_count);

		var options_size = jQuery( 'select.learndash-binary-selector-items-right option', self.selector_div ).length;
		//jQuery('.learndash-binary-selector-legend-right span.items-loaded-count', self.selector_div).html(options_size);

		//var selected_items_length = Object.keys(self.selected_items).length;
		jQuery( '.learndash-binary-selector-legend-right span.items-total-count', self.selector_div ).html( options_size );
	};

	this.handle_pager = function( clicked_el ) {
		var section_el = self.get_section_el( clicked_el );
		if ( typeof section_el === 'undefined' ) {
			return;
		}

		var selector_html_id = jQuery( self.selector_div ).attr( 'id' );
		if ( typeof selector_html_id === 'undefined' ) {
			return;
		}

		var section_pager_el = jQuery( clicked_el ).parents( 'ul.learndash-binary-selector-pager' );
		if ( typeof section_pager_el === 'undefined' ) {
			return;
		}

		var query_data = {};

		if ( typeof self.selector_data.query_vars === 'undefined' ) {
			return;
		}

		query_data.query_vars = self.selector_data.query_vars;

		if ( typeof self.selector_data.selector_class === 'undefined' ) {
			return;
		}

		query_data.selector_class = self.selector_data.selector_class;
		query_data.selector_nonce = self.selector_data.selector_nonce;
		query_data.selector_html_id = selector_html_id;

		if ( jQuery( section_pager_el ).hasClass( 'learndash-binary-selector-pager-left' ) ) {
			var position = 'left';
		} else if ( jQuery( section_pager_el ).hasClass( 'learndash-binary-selector-pager-right' ) ) {
			var position = 'right';
		}

		if ( typeof position === 'undefined' ) {
			return;
		}

		query_data.position = position;

		if ( typeof self.selector_data[position] === 'undefined' ) {
			return;
		}

		if ( typeof self.selector_data[position].pager === 'undefined' ) {
			return;
		}

		var selector_pager = self.selector_data[position].pager;

		if ( jQuery( clicked_el ).hasClass( 'learndash-binary-selector-pager-prev' ) ) {
			if ( selector_pager.current_page == 1 ) {
				return;
			}

			query_data.query_vars.paged = parseInt( selector_pager.current_page ) - 1;
		} else if ( jQuery( clicked_el ).hasClass( 'learndash-binary-selector-pager-next' ) ) {
			if ( parseInt( selector_pager.current_page ) == parseInt( selector_pager.total_pages ) ) {
				return;
			}

			query_data.query_vars.paged = parseInt( selector_pager.current_page ) + 1;
		}

		query_data.selected_ids = self.get_selector_form_element( true );

		var post_data = {
			action: 'learndash_binary_selector_pager',
			nonce: self.nonce,
			query_data: query_data,
		};

		jQuery.ajax( {
			type: 'POST',
			url: ajaxurl,
			dataType: 'json',
			cache: false,
			data: post_data,
			error: function( jqXHR, textStatus, errorThrown ) {
				//console.log('init: error HTTP Status['+jqXHR.status+'] '+errorThrown);
			},
			success: function( reply_data ) {
				if ( typeof reply_data.html_options !== 'undefined' ) {
					jQuery( '.learndash-binary-selector-items', section_el ).empty().append( reply_data.html_options );
				}

				if ( typeof reply_data['query-vars'] !== 'undefined' ) {
					self.selector_data[position]['query-vars'] = reply_data['query-vars'];
				}

				if ( typeof reply_data.pager !== 'undefined' ) {
					self.selector_data[position].pager = reply_data.pager;
					self.update_pager( section_pager_el, self.selector_data[position].pager );
					self.update_legend();
				}
			},
		} );
	};

	this.update_pager = function( section_pager_el, section_pager_data ) {
		if ( typeof section_pager_el !== 'undefined' ) {
			if ( typeof section_pager_data.current_page !== 'undefined' ) {
				var current_page = parseInt( section_pager_data.current_page );
			} else {
				var current_page = 0;
			}

			if ( typeof section_pager_data.total_pages !== 'undefined' ) {
				var total_pages = parseInt( section_pager_data.total_pages );
			} else {
				var total_pages = 0;
			}

			if ( typeof section_pager_data.total_items !== 'undefined' ) {
				var total_items = parseInt( section_pager_data.total_items );
			} else {
				var total_items = 0;
			}

			if ( ( current_page >= 1 ) && ( total_pages >= 1 ) ) {
				jQuery( '.learndash-binary-selector-pager-info span.current_page', section_pager_el ).html( current_page );
				jQuery( '.learndash-binary-selector-pager-info span.current_page', section_pager_el ).show();

				jQuery( '.learndash-binary-selector-pager-info span.total_pages', section_pager_el ).html( total_pages );
				jQuery( '.learndash-binary-selector-pager-info span.total_pages', section_pager_el ).show();

				jQuery( '.learndash-binary-selector-pager-info span.total_items span.total_items_count', section_pager_el ).html( total_items );
				jQuery( '.learndash-binary-selector-pager-info span.total_items', section_pager_el ).show();

				jQuery( '.learndash-binary-selector-pager-info', section_pager_el ).show();

				if ( current_page == 1 ) {
					jQuery( '.learndash-binary-selector-pager-prev a', section_pager_el ).hide();
				} else {
					jQuery( '.learndash-binary-selector-pager-prev a', section_pager_el ).show();
				}

				if ( current_page == total_pages ) {
					jQuery( '.learndash-binary-selector-pager-next a', section_pager_el ).hide();
				} else {
					jQuery( '.learndash-binary-selector-pager-next a', section_pager_el ).show();
				}
			} else {
				jQuery( '.learndash-binary-selector-pager-info span.current_page', section_pager_el ).hide();
				jQuery( '.learndash-binary-selector-pager-info span.total_pages', section_pager_el ).hide();
				jQuery( '.learndash-binary-selector-pager-prev a', section_pager_el ).hide();
				jQuery( '.learndash-binary-selector-pager-next a', section_pager_el ).hide();
			}
		}
	};

	this.init_lazy_load = function() {

		//if (jQuery(self.selector_div).hasClass('learndash_lazy_load') ) {
		//	self.lazy_load_items();
		//}
	};

	this.add_selected_items = function( e ) {
		e.preventDefault();

		var items_changed = [];
		if ( ( jQuery( '.learndash-binary-selector-items-left', self.selector_div ).length ) && ( jQuery( '.learndash-binary-selector-items-right', self.selector_div ).length ) ) {
			jQuery( '.learndash-binary-selector-items-left option:selected', self.selector_div ).each( function() {
				var option_left_el = jQuery( this );

				if ( ! option_left_el.hasClass( 'learndash-binary-selector-item-disabled' ) ) {
					jQuery( option_left_el, self.selector_div ).removeClass( 'learndash-binary-selector-item-selected' );
					jQuery( option_left_el, self.selector_div ).clone().appendTo( jQuery( '.learndash-binary-selector-items-right', self.selector_div ) );
					jQuery( option_left_el, self.selector_div ).addClass( 'learndash-binary-selector-item-disabled' );
					jQuery( option_left_el, self.selector_div ).prop( 'selected', false );
					jQuery( option_left_el, self.selector_div ).prop( 'disabled', true );

					var data_id = jQuery( option_left_el ).attr( 'data-value' );
					if ( data_id != '' ) {
						items_changed.push( data_id );
					}
				}
			} );
		}

		self.update_selected_form_element( 'add', items_changed );
	};

	this.remove_selected_items = function( e ) {
		e.preventDefault();

		var items_changed = [];

		if ( ( jQuery( '.learndash-binary-selector-items-left', self.selector_div ).length ) && ( jQuery( '.learndash-binary-selector-items-right', self.selector_div ).length ) ) {
			jQuery( '.learndash-binary-selector-items-right option:selected', self.selector_div ).each( function() {
				var option_right_el = jQuery( this );

				var data_id = jQuery( option_right_el ).attr( 'data-value' );
				if ( data_id != '' ) {
					items_changed.push( data_id );
				}

				if ( jQuery( '.learndash-binary-selector-items-left option[data-value="' + data_id + '"]', self.selector_div ).length ) {
					jQuery( '.learndash-binary-selector-items-left option[data-value="' + data_id + '"]', self.selector_div ).removeClass( 'learndash-binary-selector-item-disabled' );
					jQuery( '.learndash-binary-selector-items-left option[data-value="' + data_id + '"]', self.selector_div ).removeClass( 'learndash-binary-selector-item-selected' );
					jQuery( '.learndash-binary-selector-items-left option[data-value="' + data_id + '"]', self.selector_div ).prop( 'disabled', false );
				}
				jQuery( option_right_el ).remove();
			} );
		}
		self.update_selected_form_element( 'remove', items_changed );
	};

	this.get_section_el = function( child_el ) {
		if ( typeof child_el !== 'undefined' ) {
			return jQuery( child_el ).parents( '.learndash-binary-selector-section' );
		}
	};

	// We update our internal selector form element.
	// action is 'add' or 'remove'.
	// changed_ids is array of items to add or remove.
	this.update_selected_form_element = function( action, changed_ids ) {
		if ( changed_ids.length ) {
			if ( action == 'add' ) {
				jQuery.each( changed_ids, function( index, item ) {
					var item_val = parseInt( item );
					if ( jQuery.inArray( item_val, self.selected_items ) == -1 ) {
						self.selected_items.push( item_val );
					}
				} );
				self.save_selector_form_element();
			} else if ( action == 'remove' ) {
				jQuery.each( changed_ids, function( index, item ) {
					var item_val = parseInt( item );
					var item_pos = jQuery.inArray( item_val, self.selected_items );
					if ( item_pos !== -1 ) {
						self.selected_items.splice( item_pos, 1 );
					}
				} );
				self.save_selector_form_element();
			}
		}
	};

	/*
	this.update_selected_form_element = function() {
		//self.selected_items = [];

		//jQuery('.learndash-binary-selector-items-right li', self.selector_div).each(function() {
		jQuery('.learndash-binary-selector-items-right option', self.selector_div).each(function() {

			var data_id = jQuery(this).attr('data-value');
			if (typeof data_id !== 'undefined') {
				self.selected_items.push(data_id);
			}
		});

		self.save_selector_form_element( self.selected_items );

		// We store the array of selected items as a stringified JSON item then decode on the server.
		// The reason for this is to bypass the PHP max_post_items limit of 1000. We could pass a comma
		// separated string. But then we would need to parse this each time the user moves items in JS
		// as well on convert to array on the server.
		jQuery('input.learndash-binary-selector-form-element', self.selector_div).val(JSON.stringify(self.selected_items));

		self.update_legend();

	}
*/
	this.get_selector_form_element = function( return_raw ) {
		if ( typeof return_raw === 'undefined' ) {
			return_raw = false;
		}

		var selected_items = jQuery( 'input.learndash-binary-selector-form-element', self.selector_div ).val();

		if ( return_raw == false ) {
			self.selected_items = JSON.parse( selected_items );

			// The returned 'type' from JSON.parse() is an object. We want to convert this to an array to better manage adding, removing items
			self.selected_items = jQuery.map( self.selected_items, function( el ) {
				return parseInt( el );
			} );

			return self.selected_items;
		}
		return selected_items;
	};

	this.save_selector_form_element = function( ) {
		jQuery( 'input.learndash-binary-selector-form-element', self.selector_div ).val( JSON.stringify( self.selected_items ) );
		jQuery( 'input.learndash-binary-selector-form-changed', self.selector_div ).val( '1' );
	};

	this.sort_right_options = function() {

		// For now no sorting. Jsut append to the bottom.
		/*
		var options = jQuery('.learndash-binary-selector-items-right li', self.selector_div);
		var arr = options.map(function(_, o) { return { t: jQuery(o).text(), v: o.value }; }).get();
		arr.sort(function(o1, o2) { return o1.t > o2.t ? 1 : o1.t < o2.t ? -1 : 0; });
		options.each(function(i, o) {
		  o.value = arr[i].v;
		  jQuery(o).text(arr[i].t);
		});
		*/
	};

	this.get_selector_data = function( force_reload ) {
		if ( typeof force_reload === 'undefined' ) {
			force_reload = false;
		}

		if ( ( self.selector_data_loaded != true ) || ( force_reload === true ) ) {
			self.selector_data_loaded = true;

			element_data = jQuery( self.selector_div ).attr( 'data' );
			if ( typeof element_data === 'undefined' ) {
				return;
			}
			self.selector_data = JSON.parse( element_data );
		}
		return self.selector_data;
	};

	this.get_selector_data_element = function( element_key ) {
		var selector_data = self.get_selector_data();

		if ( ( typeof selector_data !== 'undefined' ) && ( typeof element_key !== 'undefined' ) && ( typeof selector_data[element_key] !== 'undefined' ) ) {
			return selector_data[element_key];
		}
	};

	this.set_selector_data_element = function( element_key, element_value ) {
		self.get_selector_data();

		this.selector_data[element_key] = element_value;
	};

	this.update_selector_data = function( query_data ) {
		jQuery( self.selector_div ).attr( 'data', JSON.stringify( query_data ) );
		this.selector_data = query_data;
	};

	this.lazy_load_items = function( query_data ) {
		if ( typeof query_data === 'undefined' ) {
			query_data = self.get_selector_data();
		}

		if ( typeof query_data.query_vars.paged === 'undefined' ) {
			query_data.query_vars.paged = 0;
		}

		query_data.query_vars.paged = parseInt( query_data.query_vars.paged ) + 1;

		var post_data = {
			action: 'learndash_binary_selector_lazy_loader',
			nonce: self.nonce,
			'query-data': query_data,
		};

		jQuery.ajax( {
			type: 'POST',
			url: ajaxurl,
			dataType: 'json',
			cache: false,
			data: post_data,
			error: function( jqXHR, textStatus, errorThrown ) {
				//console.log('init: error HTTP Status['+jqXHR.status+'] '+errorThrown);
				//console.log('error [%o]', textStatus);
			},
			success: function( reply_data ) {
				if ( typeof reply_data !== 'undefined' ) {
					if ( typeof reply_data.html_options !== 'undefined' ) {
						if ( reply_data.html_options != '' ) {
							jQuery( 'select.learndash-binary-selector-items-left', self.selector_div ).append( reply_data.html_options );

							// Delete the received html_options...
							delete reply_data.html_options;

							//this.set_selector_data_element()//reply_data
							self.update_selector_data( reply_data );
							self.update_legend();

							// ...as we are going to loop to ourself and regenerate
							self.lazy_load_items( reply_data );
						} else {
							// We then update the load element data attribute
							//jQuery(self.selector_div).attr('data', JSON.stringify(reply_data));
							self.update_selector_data( reply_data );
							self.set_selected_items();
						}
					}
				}
			},
		} );
	};

	this.set_selected_items = function() {
		//var selected_items = jQuery('input.learndash-binary-selector-form-element', self.selector_div).val();
		self.get_selector_form_element();

		// We clear out all the options on the right side because we are about to re-add them after the lazy load
		jQuery( 'select.learndash-binary-selector-items-right', self.selector_div ).empty();

		// We also reset all the items on the left side with default states as we are going to loop over the hidden input and re-add them.
		jQuery( 'select.learndash-binary-selector-items-left > option.learndash-binary-selector-item ', self.selector_div ).removeClass( 'learndash-binary-selector-item-disabled' );
		jQuery( 'select.learndash-binary-selector-items-left > option.learndash-binary-selector-item ', self.selector_div ).prop( 'selected', false );
		jQuery( 'select.learndash-binary-selector-items-left > option.learndash-binary-selector-item ', self.selector_div ).prop( 'disabled', false );

		//selected_items = JSON.parse(selected_items);

		jQuery.each( self.selected_items, function( index, item ) {
			jQuery( '.learndash-binary-selector-items-left option.learndash-binary-selector-item[value="' + item + '"]', self.selector_div ).each( function() {
				var option_left_el = jQuery( this );
				jQuery( option_left_el, self.selector_div ).clone().appendTo( jQuery( '.learndash-binary-selector-items-right', self.selector_div ) );
				jQuery( option_left_el, self.selector_div ).addClass( 'learndash-binary-selector-item-disabled' );
				jQuery( option_left_el, self.selector_div ).prop( 'selected', false );
				jQuery( option_left_el, self.selector_div ).prop( 'disabled', true );
			} );
		} );

		self.update_legend();
	};
}

jQuery.expr[':'].Contains = jQuery.expr.createPseudo( function( arg ) {
	return function( elem ) {
		return jQuery( elem ).text().toUpperCase().indexOf( arg.toUpperCase() ) >= 0;
	};
} );