MarketPress - Adds quantity field into [mp_list_products] shortcode

mp-add-quantity-in-product-list.php

<?php
/**
* Plugin Name: MarketPress - [mp_list_products] quantity
* Plugin URI: https://premium.wpmudev.org/
* Description: Adds quantity field into [mp_list_products] shortcode
* Author: Panos Lyrakis / Konstantinos Xenos @ WPMUDEV
* Author URI: https://premium.wpmudev.org/
* License: GPLv2 or later
*/

function add_qty_product_list_page_js() {
	?>
	<script type="text/javascript">
		( function( $ ) {
			$.ajaxSetup( {
				beforeSend: function( jqXHR, settings ) {
					if ( settings.data ) {
						var product_id = getUrlParameter( 'product', settings.data ),
							action = getUrlParameter( 'cart_action', settings.data ),
							quantity = $( '#mp-buy-product-' + product_id + '-form .mp_form_input-qty' ).val(),
							dataString = settings.data;

						if ( typeof action === 'undefined' || 'add_item' != action || dataString.indexOf( 'product_attr' ) != -1 ) {
							return true;
						}

						settings.data += '&qty=' + quantity;
						return true;
					}
				}
			});

			var getUrlParameter = function getUrlParameter( sParam, url ) {
				var sURLVariables = url.split( '&' ),
					sParameterName,
					i;

				for ( i = 0; i < sURLVariables.length; i++ ) {
					sParameterName = sURLVariables[i].split( '=' );

					if (sParameterName[0] === sParam) {
						return sParameterName[1] === undefined ? true : sParameterName[1];
					}
				}
			};
		} ) ( jQuery );
	</script>
	<style>
		#colorbox {
			width: 500px !important;
		}
		#cboxWrapper,
		#cboxContent {
			width: 100% !important;
		}
		#cboxLoadedContent {
			width: calc( 100% - 30px )!important;
		}
		.customqty {
			float: left;
			width: auto;
			margin-right: 15px;
		}
		.customqty .mp_product_options_att_label {
			display: none;
		}
	</style>
	<?php
};

function add_qty_product_list_page( $button, $product_id, $context, $selected_atts, $no_single ) {
	if ( 'list' === $context ) {
		$product = new MP_Product( $product_id );
		if ( ! $product->has_variations() ) {
			$html = '<div class="mp_product_options_atts customqty">
							<div class="mp_product_options_att">
								<strong class="mp_product_options_att_label">' . __( 'Quantity', 'mp' ) . '</strong>
								<div class="mp_form_field mp_product_options_att_field">
									' . $product->attribute_input_fields( true, false, false ) . '
								</div><!-- end mp_product_options_att_field -->
							</div><!-- end mp_product_options_att -->
						</div><!-- end mp_product_options_atts -->';

			$button = substr_replace( $button, $html, strpos( $button, '<input' ), 0 );
		}
	}

	add_action( 'wp_footer', 'add_qty_product_list_page_js', 999 );

	return $button;
}

add_filter( 'mp_buy_button_tag', 'add_qty_product_list_page', 10, 5 );