- Added "beforeSubmit" callback handler to the PHP json class

- Added "clientCall" and "clientSetOption" function to the base etemplate widget class
- Got the client side HTML area widget work with the new functions described above

phpgwapi/inc/class.egw_json.inc.php

@@ -145,6 +145,11 @@ class egw_json_response
 	 */
 	private $hasData = false;
 
+	/**
+	 * Array containing all beforeSendData callbacks
+	 */
+	protected $beforeSendDataProcs = array();
+
 	/**
 	 * Holds the actual response data which is then encoded to JSON
 	 * once the "getJSON" function is called
@@ -190,7 +195,12 @@ class egw_json_response
 	{
 		$inst = self::get();
 
+		//Call each attached before send data proc
+		foreach ($inst->beforeSendDataProcs as $proc)
+			call_user_func_array($proc['proc'], $proc['params']);
+
 		$inst->sendHeader();
+
 		echo $inst->getJSON();
 	}
 
@@ -390,6 +400,28 @@ class egw_json_response
 		return json_encode($res);	//PHP5.3+, JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_QUOT | JSON_HEX_AMP);
 	}
 
+	/**
+	 * Function which can be used to add an event listener callback function to
+	 * the "beforeSendData" callback. This callback might be used to add a response
+	 * which always has to be added after all other responses.
+	 * @param callback Callback function or method which should be called before the response gets sent
+	 * @param mixed n Optional parameters which get passed to the callback function.
+	 */
+	public function addBeforeSendDataCallback($proc)
+	{
+		//Get the current instance
+		$inst = self::get();
+
+		//Get all parameters passed to the function and delete the first one
+		$params = func_get_args();
+		array_shift($params);
+
+		$inst->beforeSendDataProcs[] = array(
+			'proc' => $proc,
+			'params' => $params
+		);
+	}
+
 	/**
 	 * Destructor
 	 */

phpgwapi/js/egw_json.js

@@ -187,7 +187,7 @@ egw_json_request.prototype.sendRequest = function(_async, _callback, _sender)
 				"parameters": this.parameters
 			}
 		})
-	}
+	};
 
 	//Send the request via the jquery AJAX interface to the server
 	$.ajax({url: this.url + '?menuaction=' + this.menuaction,