gistfile1.txt

/**
 * Allow to remove method for an hook when, it's a class method used and class don't have variable, but you know the class name :)
 * @see https://github.com/herewithme/wp-filters-extras
 */
function remove_filters_for_anonymous_class( $hook_name = '', $class_name ='', $method_name = '', $priority = 0 ) {
	global $wp_filter;
	// Take only filters on right hook name and priority
	if ( !isset($wp_filter[$hook_name][$priority]) || !is_array($wp_filter[$hook_name][$priority]) )
		return false;
	// Loop on filters registered
	foreach( (array) $wp_filter[$hook_name][$priority] as $unique_id => $filter_array ) {
		// Test if filter is an array ! (always for class/method)
		if ( isset($filter_array['function']) && is_array($filter_array['function']) ) {
			// Test if object is a class, class and method is equal to param !
			if ( is_object($filter_array['function'][0]) && get_class($filter_array['function'][0]) && get_class($filter_array['function'][0]) == $class_name && $filter_array['function'][1] == $method_name ) {
			    // Test for WordPress >= 4.7 WP_Hook class (https://make.wordpress.org/core/2016/09/08/wp_hook-next-generation-actions-and-filters/)
			    if( is_a( $wp_filter[$hook_name], 'WP_Hook' ) ) {
			        unset( $wp_filter[$hook_name]->callbacks[$priority][$unique_id] );
			    }
			    else {
				    unset($wp_filter[$hook_name][$priority][$unique_id]);
			    }
			}
		}
	}
	return false;
}


function remove_already_applied_title_for_wpjm_applications() {
		remove_filters_for_anonymous_class( 'the_title', 'WP_Job_Manager_Applications_Post_Types', 'already_applied_title', 10 );
}
add_action( 'plugins_loaded', 'remove_already_applied_title_for_wpjm_applications', 99 );


function add_already_applied_title_for_wpjm_applications() {
		if (class_exists('WP_Job_Manager_Applications_Post_Types')) {
	
			/**
			 * JOBSTER_Applications_Post_Types class.
			 */
			class JOBSTER_Applications_Post_Types extends  WP_Job_Manager_Applications_Post_Types {
			
				/**
				 * __construct function.
				 */
				public function __construct() {
					add_filter( 'the_title', array( $this, 'already_applied_title' ), 1000, 2 );
				}

				public function already_applied_title( $title, $post_id = '' ) {
					if ( $post_id && 'job_listing' === get_post_type( $post_id ) && ! is_single() && empty( $_POST['wp_job_manager_resumes_apply_with_resume'] ) && empty( $_GET['download-csv'] ) && user_has_applied_for_job( get_current_user_id(), $post_id ) ) {
						$title .= ' <span class="uk-bage uk-badge-primary job-manager-applications-applied-notice">' . __( 'Applied', 'wp-job-manager-applications' ) . '</span>';
					}
					return $title;
				}
			}
		    
		}

		new JOBSTER_Applications_Post_Types();
}
add_action( 'plugins_loaded', 'add_already_applied_title_for_wpjm_applications', 999 );

?>