CC-2791: "Port" should only allow numbers and 5 digits

- fixed
- fixed scrolling when errors

airtime_mvc/application/forms/StreamSettingSubForm.php

@@ -93,6 +93,8 @@ class Application_Form_StreamSettingSubForm extends Zend_Form_SubForm{
         $port = new Zend_Form_Element_Text('port');
         $port->setLabel("Port")
                 ->setValue(isset($setting[$prefix.'_port'])?$setting[$prefix.'_port']:"")
+                ->setValidators(array(new Zend_Validate_Between(array('min'=>0, 'max'=>99999))))
+                ->addValidator('regex', false, array('pattern'=>'/^[0-9]+$/', 'messages'=>array('regexNotMatch'=>'Only numbers are allowed.')))
                 ->setDecorators(array('ViewHelper'));
         if($disable_all){
             $port->setAttrib("disabled", "disabled");

airtime_mvc/public/js/airtime/preferences/streamsetting.js

@@ -2,8 +2,8 @@ function showErrorSections() {
 
     $(".errors").each(function(i){
         if($(this).length > 0){
-            $(this).closest("div").show();
-            $(window).scrollTop($(this).position().top);
+            // -250 is due to static panel on the top
+            $(window).scrollTop($(this).closest("div").position().top-250);
             return false;
         }
     });