Automattic / jetpack

	 * Listen for clicks on the "Update Cart" button to know if an item has been removed by

	 * updating its quantity to zero

	 */

	public function remove_from_cart_via_quantity() {

		$blogid = Jetpack::get_option( 'id' );

		wc_enqueue_js( "

			jQuery( 'button[name=update_cart]' ).on( 'click', function() {

				var cartItems = jQuery( '.cart_item' );

				cartItems.each( function( item ) {

					var qty = jQuery( this ).find( 'input.qty' );

					if ( qty && qty.val() === '0' ) {

						var productID = jQuery( this ).find( '.product-remove a' ).data( 'product_id' );

						_wca.push( {

							'_en': 'woocommerceanalytics_remove_from_cart',

							'blog_id': '" . esc_js( $blogid ) . "',

							'pi': productID,

							'ui': '" . esc_js( $this->get_user_id() ) . "',

						} );

					}

				} );

			} );

		" );

	}

	/**

	 * Get the current user id

	/**

	 * On the cart page, add an event listener for removal of product click

	 */

	public function remove_from_cart() {

		// We listen at div.woocommerce because the cart 'form' contents get forcibly

		// updated and subsequent removals from cart would then not have this click

		// handler attached.

		$blogid = Jetpack::get_option( 'id' );

		wc_enqueue_js(

			"jQuery( 'div.woocommerce' ).on( 'click', 'a.remove', function() {

				var productID = jQuery( this ).data( 'product_id' );

				var quantity = jQuery( this ).parent().parent().find( '.qty' ).val()

				var productDetails = {

					'id': productID,

					'quantity': quantity ? quantity : '1',

				};

				_wca.push( {

					'_en': 'woocommerceanalytics_remove_from_cart',

					'blog_id': '" . esc_js( $blogid ) . "',

					'pi': productDetails.id,

					'pq': productDetails.quantity,

					'ui': '" . esc_js( $this->get_user_id() ) . "',

				} );

			} );"

		);

	}

	/**

	 * Adds the product ID to the remove product link (for use by remove_from_cart above) if not present