Add option to trigger printing for on-hold status

Author: Lozrus

create-settings.php

@@ -143,13 +143,15 @@ function star_cloudprnt_load_printer_settings()
 		}
 	}
 
-	function star_cloudprnt_trigger_display()
+	function star_cloudprnt_trigger_display()  
 	{
 		?>
 			<input type="radio" name="star-cloudprnt-trigger" value="status_processing" <?php checked(get_option('star-cloudprnt-trigger'), 'status_processing', true) ?>>
 			<label>When an order is assigned the "processing" status (recommended for most sites)</label><br>
 			<input type="radio" name="star-cloudprnt-trigger" value="status_completed" <?php checked(get_option('star-cloudprnt-trigger'), 'status_completed', true) ?>>
 			<label>When an order is assigned the "completed" status</label><br>
+			<input type="radio" name="star-cloudprnt-trigger" value="status_on-hold" <?php checked(get_option('star-cloudprnt-trigger'), 'status_on-hold', true) ?>>
+			<label>When an order is assigned the "on hold" status</label><br>
 			<input type="radio" name="star-cloudprnt-trigger" value="thankyou" <?php checked(get_option('star-cloudprnt-trigger'), 'thankyou', true) ?>>
 			<label>When WooCommerce "Thank You" message is displayed (<span class="star_cp_caution">&#x26a0;</span> legacy option, not recommended)</label><br>
 			<input type="radio" name="star-cloudprnt-trigger" value="none" <?php checked(get_option('star-cloudprnt-trigger'), 'none', true) ?>>

order-handler.inc.php

@@ -282,7 +282,9 @@ function star_cloudprnt_setup_order_handler()
 				add_action('woocommerce_order_status_processing', 'star_cloudprnt_trigger_print', 1, 1);
 			} elseif ($trigger === 'status_completed') {
 				add_action('woocommerce_order_status_completed', 'star_cloudprnt_trigger_print', 1, 1);
-			} 
+			} elseif ($trigger == "status_on-hold") {
+				add_action('woocommerce_order_status_on-hold', 'star_cloudprnt_trigger_print', 1, 1);
+			}
 
 		}
 	}