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<?php
/**
 * WPFA Login Form
 * Borrowed from the core login form and used with the shortcode 'bns_login'
 * This allows for the 'bns_login' shortcode to accept all of the parameters
 * of the `wp_login_form` function as the shortcode attributes.
 *
 * @package WPFA_Login_Form
 * @since   1.0
 *
 * @param   $args
 *
 * @internal $defaults copied from codex '$args' entry
 * @link    http://codex.wordpress.org/Function_Reference/wp_login_form
 *
 * @uses    __
 * @uses    shortcode_atts
 * @uses    site_url
 * @uses    wp_login_form
 * @uses    wp_parse_args
 *
 * @return  string - the login form
 */
function wpfa_login_form( $args ) {

    $defaults = shortcode_atts( array(
        'echo'              => false,
        'redirect'          => site_url( '/wp-admin/' ),
        'form_id'           => 'loginform',
        'label_username'    => __( 'Username', 'wpfa-textdomain' ),
        'label_password'    => __( 'Password', 'wpfa-textdomain' ),
        'label_remember'    => __( 'Remember Me', 'wpfa-textdomain' ),
        'label_log_in'      => __( 'Log In', 'wpfa-textdomain' ),
        'id_username'       => 'user_login',
        'id_password'       => 'user_pass',
        'id_remember'       => 'rememberme',
        'id_submit'         => 'wp-submit',
        'remember'          => true,
        'value_username'    => NULL,
        'value_remember'    => false
    ), $args );

    $login_args = wp_parse_args( $args, $defaults );

    return wp_login_form( $login_args );

} /** End function - WPFA login form */
add_shortcode( 'wpfa_login', 'wpfa_login_form' );