Sindbad~EG File Manager

<?php
/**
 * Inspiro Lite SVG Icon helper functions
 *
 * @package Inspiro
 * @subpackage Inspiro_Lite
 * @since Inspiro 1.0.0
 */

if ( ! function_exists( 'inspiro_the_theme_svg' ) ) {
	/**
	 * Output and Get Theme SVG.
	 * Output and get the SVG markup for an icon in the Inspiro_SVG_Icons class.
	 *
	 * @param string $svg_name The name of the icon.
	 * @param string $group The group the icon belongs to.
	 * @param string $color Color code.
	 */
	function inspiro_the_theme_svg( $svg_name, $group = 'ui', $color = '' ) {
		echo inspiro_get_theme_svg( $svg_name, $group, $color );
	}
}

if ( ! function_exists( 'inspiro_get_theme_svg' ) ) {

	/**
	 * Get information about the SVG icon.
	 *
	 * @param string $svg_name The name of the icon.
	 * @param string $group The group the icon belongs to.
	 * @param string $color Color code.
	 */
	function inspiro_get_theme_svg( $svg_name, $group = 'ui', $color = '' ) {

		// Make sure that only our allowed tags and attributes are included.
		$svg = wp_kses(
			Inspiro_SVG_Icons::get_svg( $svg_name, $group, $color ),
			array(
				'svg'     => array(
					'class'       => true,
					'xmlns'       => true,
					'width'       => true,
					'height'      => true,
					'viewbox'     => true,
					'aria-hidden' => true,
					'role'        => true,
					'focusable'   => true,
				),
				'path'    => array(
					'fill'      => true,
					'fill-rule' => true,
					'd'         => true,
					'transform' => true,
				),
				'polygon' => array(
					'fill'      => true,
					'fill-rule' => true,
					'points'    => true,
					'transform' => true,
					'focusable' => true,
				),
			)
		);

		if ( ! $svg ) {
			return false;
		}
		return $svg;
	}
}

/**
 * Add dropdown icon if menu item has children.
 *
 * @param string   $title The menu item's title.
 * @param WP_Post  $item  The current menu item.
 * @param stdClass $args  An object of wp_nav_menu() arguments.
 * @param int      $depth Depth of menu item. Used for padding.
 * @return string The menu item's title with dropdown icon.
 */
function inspiro_dropdown_icon_to_menu_link( $title, $item, $args, $depth ) {
	if ( 'primary' === $args->theme_location ) {
		foreach ( $item->classes as $value ) {
			if ( 'menu-item-has-children' === $value || 'page_item_has_children' === $value ) {
				$title = $title . inspiro_get_theme_svg( 'angle-down' );
			}
		}
	}

	return $title;
}
add_filter( 'nav_menu_item_title', 'inspiro_dropdown_icon_to_menu_link', 10, 4 );