supports() method which mirrors gateways

Closes #9471

includes/abstracts/abstract-wc-product.php

@@ -57,7 +57,7 @@ class WC_Product {
 	public $product_type = null;
 
 	/**
-	 * Prouduct shipping class
+	 * Product shipping class
 	 *
 	 * @var string
 	 */
@@ -70,6 +70,12 @@ class WC_Product {
 	 */
 	protected $shipping_class_id = 0;
 
+	/**
+	 * Supported features such as 'ajax_add_to_cart'
+	 * @var array
+	 */
+	protected $supports = array();
+
 	/**
 	 * Constructor gets the post object and sets the ID for the loaded product.
 	 *
@@ -144,6 +150,19 @@ class WC_Product {
 		return $this->post;
 	}
 
+	/**
+	 * Check if a product supports a given feature.
+	 *
+	 * Product classes should override this to declare support (or lack of support) for a feature.
+	 *
+	 * @param string $feature string The name of a feature to test support for.
+	 * @return bool True if the product supports the feature, false otherwise.
+	 * @since 2.5.0
+	 */
+	public function supports( $feature ) {
+		return apply_filters( 'woocommerce_product_supports', in_array( $feature, $this->supports ) ? true : false, $feature, $this );
+	}
+
 	/**
 	 * get_gallery_attachment_ids function.
 	 *
@@ -750,17 +769,6 @@ class WC_Product {
 		return apply_filters( 'woocommerce_is_purchasable', $purchasable, $this );
 	}
 
-	/**
-	 * Returns whether or not the product can be added to the cart via ajax
-	 *
-	 * @since 2.4.9
-	 * @return bool
-	 */
-	public function supports_ajax_add_to_cart() {
-		return apply_filters( 'woocommerce_product_supports_ajax_add_to_cart', $this->is_type( 'simple' ), $this );
-	}
-
-
 	/**
 	 * Set a products price dynamically.
 	 *

includes/class-wc-product-simple.php

@@ -24,6 +24,7 @@ class WC_Product_Simple extends WC_Product {
 	 */
 	public function __construct( $product ) {
 		$this->product_type = 'simple';
+		$this->supports[]   = 'ajax_add_to_cart';
 		parent::__construct( $product );
 	}
 

templates/loop/add-to-cart.php

@@ -12,11 +12,11 @@
  * @see 	    http://docs.woothemes.com/document/template-structure/
  * @author 		WooThemes
  * @package 	WooCommerce/Templates
- * @version     2.4.9
+ * @version     2.5.0
  */
 
 if ( ! defined( 'ABSPATH' ) ) {
-	exit; // Exit if accessed directly
+	exit;
 }
 
 global $product;
@@ -28,7 +28,7 @@ echo apply_filters( 'woocommerce_loop_add_to_cart_link',
 		esc_attr( $product->get_sku() ),
 		esc_attr( isset( $quantity ) ? $quantity : 1 ),
 		$product->is_purchasable() && $product->is_in_stock() ? 'add_to_cart_button' : '',
-		$product->supports_ajax_add_to_cart() ? 'ajax_add_to_cart' : '',
+		$product->supports( 'ajax_add_to_cart' ) ? 'ajax_add_to_cart' : '',
 		esc_attr( $product->product_type ),
 		esc_html( $product->add_to_cart_text() )
 	),