AppBuddy use login modal

appbuddy-login-modal-toolbar.php

<?php
/* 
 * Show login button in toolbar if user not logged in. AppBuddy only
 * Put this code in a child theme functions.php file
 */

function my_appbuddy_modal_btn( $button ) {
	
	$args = '';

	if ( is_user_logged_in() && bp_is_current_component('activity') || is_user_logged_in() && bp_is_group_home() ) {

			$args = array(
				'button_class' => 'nav-right-btn io-modal-open',
				'icon_class'   => 'fa fa-lg fa-edit',
				'button_text'  => '',
				'url' => '#activity-post-form'
			);

		} else if ( !is_user_logged_in() ) {

			$args = array(
				'button_class' => 'nav-right-btn login',
				'icon_class'   => 'fa fa-lg fa-sign-in',
				'button_text'  => '',
				'post_in' => '',
				'url' => '#loginModal'
			);

		}
		
		if( isset($args['url'] ) ) {
			$button = sprintf( '<a class="%s io-modal-open" href="%s" data-post="%s"><i class="%s"></i> %s</a>', $args['button_class'], $args['url'], $args['post_in'], $args['icon_class'], $args['button_text'] );
		}

	return $button;
}

add_filter('appbuddy_modal_button', 'my_appbuddy_modal_btn' );