Allow triggers to call arbitrary functions

classes/module/ModuleHandler.class.php

@@ -1207,9 +1207,9 @@ class ModuleHandler extends Handler
 
 		$oModuleModel = getModel('module');
 		$triggers = $oModuleModel->getTriggers($trigger_name, $called_position);
-		if(!$triggers || count($triggers) < 1)
+		if(!$triggers)
 		{
-			return new Object();
+			$triggers = array();
 		}
 		
 		//store before trigger call time
@@ -1252,6 +1252,17 @@ class ModuleHandler extends Handler
 			unset($oModule);
 		}
 
+		$trigger_functions = $oModuleModel->getTriggerFunctions($trigger_name, $called_position);
+		foreach($trigger_functions as $item)
+		{
+			$item($obj);
+
+			if(is_object($output) && method_exists($output, 'toBool') && !$output->toBool())
+			{
+				return $output;
+			}
+		}
+
 		return new Object();
 	}
 

modules/module/module.controller.php

@@ -60,6 +60,24 @@ class moduleController extends module
 		return $output;
 	}
 
+	/**
+	 * @brief Add trigger callback function
+	 * 
+	 * @param string $trigger_name
+	 * @param string $called_position
+	 * @param callable $callback_function
+	 */
+	function insertTriggerFunction($trigger_name, $called_position, $callback_function)
+	{
+		if(!isset($GLOBALS['__trigger_functions__']))
+		{
+			$GLOBALS['__trigger_functions__'] = array();
+		}
+		
+		$GLOBALS['__trigger_functions__'][$trigger_name][$called_position][] = $callback_function;
+		return true;
+	}
+
 	/**
 	 * @brief Add module trigger
 	 * module trigger is to call a trigger to a target module

modules/module/module.model.php

@@ -625,6 +625,21 @@ class moduleModel extends module
 		}
 	}
 
+	/**
+	 * @brief Get trigger functions
+	 */
+	function getTriggerFunctions($trigger_name, $called_position)
+	{
+		if(isset($GLOBALS['__trigger_functions__'][$trigger_name][$called_position]))
+		{
+			return $GLOBALS['__trigger_functions__'][$trigger_name][$called_position];
+		}
+		else
+		{
+			return array();
+		}
+	}
+
 	/**
 	 * @brief Get a list of all triggers on the trigger_name
 	 */