<?php
/**
 * Navigation menu related helper functions
 *
 * @package Salient WordPress Theme
 * @subpackage helpers
 * @version 12.1.0
 */

// Exit if accessed directly
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}



/**
 * Register theme menu locations.
 *
 * @since 1.0
 */
if ( function_exists( 'register_nav_menus' ) ) {

	function nectar_add_theme_menu_locations() {

		global $nectar_options;

		$sideWidgetArea                = ( isset($nectar_options['header-slide-out-widget-area']) &&  ! empty( $nectar_options['header-slide-out-widget-area'] ) ) ? $nectar_options['header-slide-out-widget-area'] : 'off';
		$usingPRCompatLayout           = false;
		$usingTopLeftRightCompatLayout = false;

		if( isset( $nectar_options['header_format'] ) ) {

			if ( ! empty( $nectar_options['header_format'] ) && $nectar_options['header_format'] === 'menu-left-aligned'
			|| $nectar_options['header_format'] === 'centered-menu'
			|| $nectar_options['header_format'] === 'centered-logo-between-menu' ) {
				$usingPRCompatLayout = true;
			}

			if ( ! empty( $nectar_options['header_format'] ) && $nectar_options['header_format'] === 'centered-menu-bottom-bar' ) {
				$usingTopLeftRightCompatLayout = true;
			}

		}

		if ( $sideWidgetArea == '1' ) {

			if( isset( $nectar_options['header_format'] ) && 'centered-logo-between-menu-alt' === $nectar_options['header_format'] ) {
				$nectar_menu_arr = array(
					'top_nav_pull_right' => 'Top Navigation Menu Pull Right',
					'top_nav_pull_left'  => 'Top Navigation Menu Pull Left',
					'secondary_nav'      => 'Secondary Navigation Menu',
					'off_canvas_nav'     => 'Off Canvas Navigation Menu',
				);
			}

			else if ( $usingPRCompatLayout == true ) {

				$nectar_menu_arr = array(
					'top_nav'            => 'Top Navigation Menu',
					'top_nav_pull_right' => 'Top Navigation Menu Pull Right',
					'secondary_nav'      => 'Secondary Navigation Menu',
					'off_canvas_nav'     => 'Off Canvas Navigation Menu',
				);

			} elseif ( $usingTopLeftRightCompatLayout == true ) {

				$nectar_menu_arr = array(
					'top_nav'           => 'Top Navigation Menu',
					'top_nav_pull_right' => 'Top Navigation Menu Pull Right',
					'top_nav_pull_left' => 'Top Navigation Menu Pull Left',
					'off_canvas_nav'    => 'Off Canvas Navigation Menu',
				);

			} else {
				$nectar_menu_arr = array(
					'top_nav'        => 'Top Navigation Menu',
					'secondary_nav'  => 'Secondary Navigation Menu',
					'off_canvas_nav' => 'Off Canvas Navigation Menu',
				);
			}
		} else {

			if( isset( $nectar_options['header_format'] ) && 'centered-logo-between-menu-alt' === $nectar_options['header_format'] ) {
				$nectar_menu_arr = array(
					'top_nav_pull_right' => 'Top Navigation Menu Pull Right',
					'top_nav_pull_left'  => 'Top Navigation Menu Pull Left',
					'secondary_nav'      => 'Secondary Navigation Menu',
				);
			}
			else if ( $usingPRCompatLayout == true ) {

				$nectar_menu_arr = array(
					'top_nav'            => 'Top Navigation Menu',
					'top_nav_pull_right' => 'Top Navigation Menu Pull Right',
					'secondary_nav'      => 'Secondary Navigation Menu',
				);

			} elseif ( $usingTopLeftRightCompatLayout == true ) {

				$nectar_menu_arr = array(
					'top_nav'           => 'Top Navigation Menu',
					'top_nav_pull_right' => 'Top Navigation Menu Pull Right',
					'top_nav_pull_left' => 'Top Navigation Menu Pull Left',
					'off_canvas_nav'    => 'Off Canvas Navigation Menu',
				);

			} else {
				$nectar_menu_arr = array(
					'top_nav'       => 'Top Navigation Menu',
					'secondary_nav' => 'Secondary Navigation Menu',
				);
			}
		}

		register_nav_menus( $nectar_menu_arr );

	}

	add_action( 'after_setup_theme', 'nectar_add_theme_menu_locations' );

}





/**
 * Walker for adding in dropdown arrows, button style and modern megamenu structure.
 *
 * @since 5.0
 */
if ( ! function_exists( 'nectar_walker_nav_menu' ) ) {
	function nectar_walker_nav_menu() {

		class Nectar_Arrow_Walker_Nav_Menu extends Walker_Nav_Menu {
			function display_element( $element, &$children_elements, $max_depth, $depth = 0, $args, &$output ) {
				$id_field = $this->db_fields['id'];
				
				global $nectar_options;

				if( isset($element->post_type) && 'nav_menu_item' !== $element->post_type ) {
					return;
				}
				
				$theme_skin     = NectarThemeManager::$skin;
				$header_format  = ( ! empty( $nectar_options['header_format'] ) ) ? $nectar_options['header_format'] : 'default';
				$dropdownArrows = ( ! empty( $nectar_options['header-dropdown-arrows'] ) && $header_format != 'left-header' ) ? $nectar_options['header-dropdown-arrows'] : 'inherit';

				// Left header dropdown functionality.
				$forced_arrows = false;
				if( isset($nectar_options['left-header-dropdown-func']) && 'separate-dropdown-parent-link' === $nectar_options['left-header-dropdown-func']) {
					$dropdownArrows = 'show';
					$forced_arrows = true;
				}

				if ( $theme_skin === 'material' ) {
					$theme_skin = 'ascend';
				}

				$header_format = ( ! empty( $nectar_options['header_format'] ) ) ? $nectar_options['header_format'] : 'default';

				// button styling
				$button_style = get_post_meta( $element->$id_field, 'menu-item-nectar-button-style', true );
				if ( ! empty( $button_style ) ) {
					$element->classes[] = $button_style;
				} else {
					$element->classes[] = 'nectar-regular-menu-item';
				}


				// Nectar Menu Options.
				$nectar_menu_options_enabled = apply_filters('nectar_menu_options_enabled', true);
				$item_icon_output = '';
				$menu_label = '';

				if( isset($element->ID) ) {

					$menu_item_options = maybe_unserialize( get_post_meta( $element->ID, 'nectar_menu_options', true ) );

					// Has options saved.
					if( !empty($menu_item_options) && false !== $nectar_menu_options_enabled ) {

						// Megamenu Parent.
						if( 0 == $depth ) {

							if( isset($menu_item_options['enable_mega_menu']) && 'on' === $menu_item_options['enable_mega_menu'] ) {

								// Remove manual megamenu class
								if( in_array('megamenu', $element->classes) ) {
									$index = array_search('megamenu', $element->classes);
									if( $index !== false ) {
										 unset($element->classes[$index]);
										 $element->classes = array_values( $element->classes );
									}
								}

								// Add nectar megamenu class.
								$element->classes[] = 'megamenu';
								$element->classes[] = 'nectar-megamenu-menu-item';

								// Alignment.
								if( isset($menu_item_options['mega_menu_alignment']) && !empty($menu_item_options['mega_menu_alignment']) ) {
									$element->classes[] = 'align-' . esc_attr($menu_item_options['mega_menu_alignment']);
								}
								// Width.
								if( isset($menu_item_options['mega_menu_width']) && !empty($menu_item_options['mega_menu_width']) ) {
									$element->classes[] = 'width-' . esc_attr($menu_item_options['mega_menu_width']);
								}

								// Bg img.
								if( isset($menu_item_options['mega_menu_bg_img']) && isset($menu_item_options['mega_menu_bg_img']['id']) && !empty($menu_item_options['mega_menu_bg_img']['id']) ) {

									$megamenu_bg_align = 'center';
									if( isset($menu_item_options['mega_menu_bg_img_alignment']) && !empty($menu_item_options['mega_menu_bg_img_alignment']) ) {
										$megamenu_bg_align = $menu_item_options['mega_menu_bg_img_alignment'];
									}

									$image_source = wp_get_attachment_image_src($menu_item_options['mega_menu_bg_img']['id'], 'large');

									if( $image_source ) {
										$element->title = $element->title . '<span class="megamenu-bg-lazy" data-align="'.esc_attr($megamenu_bg_align).'" data-bg-src="'.esc_attr($image_source[0]).'"></span>';
									}

								}



							} // Megamenu Enabled End.


						} // Megamenu Parent End.

					  //Megamenu Direct Child.
						if( 1 == $depth ) {

							$parent_menu_item_options = maybe_unserialize( get_post_meta( $element->menu_item_parent, 'nectar_menu_options', true ) );

							// Parent is using megamenu.
							if( isset($parent_menu_item_options ['enable_mega_menu']) && 'on' === $parent_menu_item_options ['enable_mega_menu'] ) {

								// Megamenu child title.
								if( isset($menu_item_options['disable_mega_menu_title']) && 'on' === $menu_item_options['disable_mega_menu_title'] ) {
									$element->classes[] = 'hide-title';
								}

								// Megamenu column width.
								if( isset($menu_item_options['menu_item_column_width']) && !empty($menu_item_options['menu_item_column_width']) ) {
									$element->classes[] = 'megamenu-column-width-' . esc_attr(intval($menu_item_options['menu_item_column_width']));
								}
								// Megamenu column padding.
								if( isset($menu_item_options['menu_item_column_padding']) && !empty($menu_item_options['menu_item_column_padding']) ) {
									$element->classes[] = 'megamenu-column-padding-' . esc_attr($menu_item_options['menu_item_column_padding']);
								}
								// Megamenu column Bg img.
								if( isset($menu_item_options['menu_item_bg_img']) && isset($menu_item_options['menu_item_bg_img']['id']) && !empty($menu_item_options['menu_item_bg_img']['id']) ) {

									$item_bg_align = 'center';
									if( isset($menu_item_options['menu_item_bg_img_alignment']) && !empty($menu_item_options['menu_item_bg_img_alignment']) ) {
										$item_bg_align = $menu_item_options['menu_item_bg_img_alignment'];
									}

									$image_source = wp_get_attachment_image_src($menu_item_options['menu_item_bg_img']['id'], 'large');
									if( $image_source ) {
										$element->title = $element->title . '<span class="megamenu-col-bg-lazy" data-align="'.esc_attr($item_bg_align).'" data-bg-src="'.esc_attr($image_source[0]).'"></span>';
									}

								}


							}

						} //Megamenu Direct Child End.

						// Menu Item Label.
						if( isset($menu_item_options['menu_item_link_label']) &&
							  !empty($menu_item_options['menu_item_link_label']) ) {

							$menu_label = '<span class="nectar-menu-label nectar-pseudo-expand">'.esc_html($menu_item_options['menu_item_link_label']).'</span>';

						}


						// Icon.
						if( isset($menu_item_options['menu_item_icon_type']) &&
								'font_awesome' === $menu_item_options['menu_item_icon_type'] &&
								isset($menu_item_options['menu_item_icon']) ) {

									// Add font awesome icon.
									$item_icon_output = '<i class="nectar-menu-icon fa '.esc_attr( $menu_item_options['menu_item_icon'] ).'"></i>';
									$element->classes[] = 'menu-item-has-icon';

						} else if ( isset($menu_item_options['menu_item_icon_type']) &&
						            'custom_text' === $menu_item_options['menu_item_icon_type'] &&
												isset($menu_item_options['menu_item_icon_custom_text']) &&
												!empty($menu_item_options['menu_item_icon_custom_text']) ) {

									$item_icon_output = '<span class="nectar-menu-icon">'.sanitize_text_field( urldecode($menu_item_options['menu_item_icon_custom_text']) ) . '</span>';
									$element->classes[] = 'menu-item-has-icon';
						}
						else if( isset($menu_item_options['menu_item_icon_type']) &&
											 'custom' === $menu_item_options['menu_item_icon_type'] &&
											 isset($menu_item_options['menu_item_icon_custom']) &&
											 isset($menu_item_options['menu_item_icon_custom']['id']) ) {

												 // Image icon.
												 $image_markup = '';

												 if( $depth > 0 ) {
													 // Lazy load submenu image icons.
													 $image_markup_src = wp_get_attachment_image_src( $menu_item_options['menu_item_icon_custom']['id'], 'large' );
													 $image_meta       = wp_get_attachment_metadata( $menu_item_options['menu_item_icon_custom']['id'] );
													 $image_alt_tag    = get_post_meta( $menu_item_options['menu_item_icon_custom']['id'], '_wp_attachment_image_alt', true );

													 $image_height = '20px';
													 $image_width = '20px';

											     if(isset($image_meta['width']) && !empty($image_meta['width'])) {
											       $image_width = $image_meta['width'];
											     }
											     if(isset($image_meta['height']) && !empty($image_meta['height'])) {
											       $image_height = $image_meta['height'];
													 }

													 if( isset($image_markup_src[0]) && !empty($image_markup_src[0]) ) {
														 $placeholder_img_src = "data:image/svg+xml;charset=utf-8,%3Csvg%20xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg'%20viewBox%3D'0%200%20".esc_attr($image_width).'%20'.esc_attr($image_height)."'%2F%3E";
														 $image_markup = '<img src="'.$placeholder_img_src.'" class="nectar-menu-icon-img" alt="'.esc_attr($image_alt_tag).'" width="'.esc_attr($image_height).'" height="'.esc_attr($image_width).'" data-menu-img-src="'.esc_url($image_markup_src[0]).'" />';
													 }
												 }
												 else {
													 $image_markup = wp_get_attachment_image($menu_item_options['menu_item_icon_custom']['id'], 'large',false,array('class'=>'nectar-menu-icon-img'));
												 }

												 if( $image_markup ) {
													 $item_icon_output = $image_markup;
													 $element->classes[] = 'menu-item-has-icon';
												 }


						}

						// Hide menu title text.
						if( isset($menu_item_options['menu_item_hide_menu_title']) &&
								'on' === $menu_item_options['menu_item_hide_menu_title'] ) {
							$element->classes[] = 'menu-item-hidden-text';
						}

					} // End has options saved.

				}
				
				// Item is a widget area
				if( in_array('widget-area-active', $element->classes)  ) {
					$element->title = $element->title;
				}
				// Dropdown arrows
				else if ( ! empty( $children_elements[ $element->$id_field ] ) && $element->menu_item_parent == 0 && $theme_skin != 'ascend' && $header_format != 'left-header' && $dropdownArrows != 'dont_show' ||
						 ! empty( $children_elements[ $element->$id_field ] ) && $element->menu_item_parent == 0 && $dropdownArrows === 'show' ) {
					$element->title     = $item_icon_output.'<span class="menu-title-text">' .$element->title . '</span>'.$menu_label.'<span class="sf-sub-indicator"><i class="fa fa-angle-down icon-in-menu" aria-hidden="true"></i></span>';
					$element->classes[] = 'sf-with-ul';
				}

				else if ( ! empty( $children_elements[ $element->$id_field ] ) && $element->menu_item_parent != 0 && $header_format != 'left-header') {
					$element->title = $item_icon_output.'<span class="menu-title-text">'.$element->title . '</span>'.$menu_label.'<span class="sf-sub-indicator"><i class="fa fa-angle-right icon-in-menu" aria-hidden="true"></i></span>';
				}
				else if ( ! empty( $children_elements[ $element->$id_field ] ) && $element->menu_item_parent != 0 && true === $forced_arrows ) {
					$element->title = $item_icon_output.'<span class="menu-title-text">'.$element->title . '</span>'.$menu_label.'<span class="sf-sub-indicator"><i class="fa fa-angle-down icon-in-menu" aria-hidden="true"></i></span>';
				}
				else {
					$element->title = $item_icon_output.'<span class="menu-title-text">'.$element->title . '</span>'.$menu_label;
				}

				// Left Header.
				if ( empty( $button_style ) && $header_format === 'left-header' ) {
					$element->title = '<span>' . $element->title . '</span>';
				}

				Walker_Nav_Menu::display_element( $element, $children_elements, $max_depth, $depth, $args, $output );
			}
		}

	}
}


nectar_walker_nav_menu();



/**
 * OCM specific icon rendering from nectar menu options.
 *
 * @since 13.0
 */

if( !class_exists('Nectar_OCM_Icon_Walker') ) {
	class Nectar_OCM_Icon_Walker extends Walker_Nav_Menu {

		function display_element( $element, &$children_elements, $max_depth, $depth = 0, $args, &$output ) {
			$id_field = $this->db_fields['id'];
			
			global $nectar_options;

			// Nectar Menu Options.
			$nectar_menu_options_enabled = apply_filters('nectar_menu_options_enabled', true);
			$item_icon_output = '';
			$menu_label = '';
			$ext_menu_item = false;
			
			if( isset($element->ID) ) {

				$menu_item_options = maybe_unserialize( get_post_meta( $element->ID, 'nectar_menu_options', true ) );

				// Has options saved.
				if( !empty($menu_item_options) && false !== $nectar_menu_options_enabled ) {
					
					// See if the menu item will be an extended item.
					if( isset($menu_item_options['menu_item_link_bg_type']) &&
					'none' !== $menu_item_options['menu_item_link_bg_type'] ) {
						$ext_menu_item = true;
					}
					
					// Menu Item Label.
					if( isset($menu_item_options['menu_item_link_label']) &&
							!empty($menu_item_options['menu_item_link_label']) ) {

						$menu_label = '<span class="nectar-menu-label nectar-pseudo-expand">'.esc_html($menu_item_options['menu_item_link_label']).'</span>';

					}

					// Icon.
					if( isset($menu_item_options['menu_item_icon_type']) &&
							'font_awesome' === $menu_item_options['menu_item_icon_type'] &&
							isset($menu_item_options['menu_item_icon']) ) {

								// Add font awesome icon.
								$item_icon_output = '<i class="nectar-menu-icon fa '.esc_attr( $menu_item_options['menu_item_icon'] ).'"></i>';
					}
					else if ( isset($menu_item_options['menu_item_icon_type']) &&
											'custom_text' === $menu_item_options['menu_item_icon_type'] &&
											isset($menu_item_options['menu_item_icon_custom_text']) &&
											!empty($menu_item_options['menu_item_icon_custom_text']) ) {

								$item_icon_output = '<span class="nectar-menu-icon">'.sanitize_text_field( urldecode($menu_item_options['menu_item_icon_custom_text']) ) . '</span>';

					}
					else if( isset($menu_item_options['menu_item_icon_type']) &&
										 'custom' === $menu_item_options['menu_item_icon_type'] &&
										 isset($menu_item_options['menu_item_icon_custom']) &&
										 isset($menu_item_options['menu_item_icon_custom']['id']) ) {

											 // Image icon.
											 $image_markup = wp_get_attachment_image($menu_item_options['menu_item_icon_custom']['id'], 'large',false,array('class'=>'nectar-menu-icon-img'));
											 if( $image_markup ) {
												 $item_icon_output = $image_markup;
											 }

					}
					
					// Disable megamenu column title.
					if( 1 == $depth &&
					    isset($menu_item_options['disable_mega_menu_title']) && 
					    'on' === $menu_item_options['disable_mega_menu_title'] ) {
						$element->classes[] = 'hide-title';
					}
					
					// Hide menu title text
					if( isset($menu_item_options['menu_item_hide_menu_title']) &&
							'on' === $menu_item_options['menu_item_hide_menu_title'] ) {
						$element->classes[] = 'menu-item-hidden-text';
					}

				} // options are set

			} // element ID is set

			if( !empty($item_icon_output) ) {
			  	$element->classes[] = 'menu-item-has-icon';
					$element->title = $item_icon_output.'<span class="menu-title-text">'.$element->title . '</span>'.$menu_label;
			}
			else if( !empty($menu_label) || true === $ext_menu_item ) {
				$element->title = '<span class="menu-title-text">'.$element->title . '</span>'.$menu_label;
			}

			Walker_Nav_Menu::display_element( $element, $children_elements, $max_depth, $depth, $args, $output );

		} // end display_element

	}
}



/**
 * Add in description field into OCM menu link output.
 *
 * @since 5.0
 */
if ( ! function_exists( 'nectar_menu_options_walker_nav_menu' ) ) {

	function nectar_menu_options_walker_nav_menu( $item_output, $item, $depth, $args ) {

		global $nectar_options;

		$ocm_style = ( ! empty( $nectar_options['header-slide-out-widget-area-style'] ) ) ? $nectar_options['header-slide-out-widget-area-style'] : 'slide-out-from-right';

		// Get Descriptions.
		$display_dropdown_desc = false;
		if( isset($nectar_options['header-dropdown-display-desc']) &&
		    !empty($nectar_options['header-dropdown-display-desc']) &&
	      '1' === $nectar_options['header-dropdown-display-desc']) {
			$display_dropdown_desc = true;
		}

		// If it's an ext menu item, skip since it'll already be added.
		if( false === strpos($item_output,'nectar-ext-menu-item') ) {

			// OCM.
			if ( 'off_canvas_nav' === $args->theme_location && $item->description ) {

				if( 'fullscreen' === $ocm_style || 'fullscreen-alt' === $ocm_style) {
					$item_output = str_replace( $args->link_after . '</a>', $args->link_after . '</a><small class="nav_desc">' . wp_kses_post($item->description) . '</small>', $item_output );
				} else {
					$item_output = str_replace( $args->link_after . '</a>', $args->link_after . '<small class="nav_desc">' . wp_kses_post($item->description) . '</small></a>', $item_output );
				}

			}

			// Regular Dropdowns.
			else if( in_array( $args->theme_location, array('top_nav','secondary_nav','top_nav_pull_right','top_nav_pull_left')) && $item->description ) {

						if( true === $display_dropdown_desc && $depth > 0 ) {
							$item_output = str_replace( $args->link_after . '</a>', $args->link_after . '<small class="item_desc">' . wp_kses_post($item->description) . '</small></a>', $item_output );
						}
			}

		}

		return $item_output;

	}
}

add_filter( 'walker_nav_menu_start_el', 'nectar_menu_options_walker_nav_menu', 10, 4 );






/**
 * Menu item style.
 *
 * @since 5.0
 */
if ( ! function_exists( 'nectar_nav_button_style' ) ) {

	function nectar_nav_button_style( $output, $item, $depth, $args ) {

		$item_id = $item->ID;
		$name    = 'menu-item-nectar-button-style';
		$value   = get_post_meta( $item_id, $name, true );

		?>

	  <p class="description description-wide">
			<label for="<?php echo esc_attr( $name ) . '-' . esc_attr( $item_id ); ?>">
				<?php echo __( 'Menu Item Style', 'salient' ); ?> <br />
				<select id="<?php echo esc_attr( $name ) . '-' . esc_attr( $item_id ); ?>" class="widefat edit-menu-item-target" name="<?php echo esc_attr( $name ) . '[' . esc_attr( $item_id ) . ']'; ?>">
					<option value="" <?php selected( $value, '' ); ?>><?php echo esc_html__( 'Standard', 'salient' ); ?> </option>
					<option value="button_solid_color" <?php selected( $value, 'button_solid_color' ); ?>><?php echo esc_html__( 'Button Accent Color', 'salient' ); ?> </option>
					<option value="button_solid_color_2" <?php selected( $value, 'button_solid_color_2' ); ?>><?php echo esc_html__( 'Button Extra Color #1', 'salient' ); ?> </option>
					<option value="button_bordered" <?php selected( $value, 'button_bordered' ); ?>><?php echo esc_html__( 'Button Bordered Accent Color', 'salient' ); ?> </option>
					<option value="button_bordered_2" <?php selected( $value, 'button_bordered_2' ); ?>><?php echo esc_html__( 'Button Bordered Extra Color #1', 'salient' ); ?> </option>
				</select>
			</label>
		</p>

		<?php
	}
}

add_action( 'wp_nav_menu_item_custom_fields', 'nectar_nav_button_style', 10, 4 );






$nectar_custom_menu_fields = array(
	'menu-item-nectar-button-style' => '',
);

/**
 * Menu item style update.
 *
 * @since 5.0
 */
function nectar_nav_button_style_update( $menu_id, $menu_item_db_id, $menu_item_args ) {

	if( !function_exists('get_current_screen') ) {
		return;
	}

	$current_screen = get_current_screen();

	// fix auto add new pages to top nav
	$on_post_type = ( $current_screen && isset( $current_screen->post_type ) && ! empty( $current_screen->post_type ) ) ? true : false;

	global $nectar_custom_menu_fields;

	if ( defined( 'DOING_AJAX' ) && DOING_AJAX || $on_post_type ) {
		return;
	}
	check_admin_referer( 'update-nav_menu', 'update-nav-menu-nonce' );

	foreach ( $nectar_custom_menu_fields as $key => $label ) {

		// Sanitize
		if ( ! empty( $_POST[ $key ][ $menu_item_db_id ] ) ) {
			// Do some checks here...
			$value = sanitize_text_field( $_POST[ $key ][ $menu_item_db_id ] );
		} else {
			$value = null;
		}

		// Update
		if ( ! is_null( $value ) ) {
			update_post_meta( $menu_item_db_id, $key, $value );
		} else {
			delete_post_meta( $menu_item_db_id, $key );
		}
	}
}

add_action( 'wp_update_nav_menu_item', 'nectar_nav_button_style_update', 10, 3 );
