/*
Theme Name: bikeway-child
Version: 1.0
Description: A child theme of Bikeway
Template: bikeway
Author: Administrator
*/
@import url("../bikeway/style.css");
/* Your awesome customization starts here */
function disable_checkout_button_no_shipping() {

    $chosen_shipping_methods = WC()->session->get( 'chosen_shipping_methods' );

    // remove button if there is no chosen shipping method
    if( empty( $chosen_shipping_methods ) ) {
        remove_action( 'woocommerce_proceed_to_checkout', 'woocommerce_button_proceed_to_checkout', 20 );
		echo('<p style="font-size:18px;color:red;">Please Select State, Enter Suburb and Postcode and Click Update To Calculate Shipping Charges and Proceed.</p>');
    }
}
add_action( 'woocommerce_proceed_to_checkout', 'disable_checkout_button_no_shipping', 1 );