*Enhanced custom edit handler*

The custom edit handler enables you to implement the validation method eZContentObjectEditHandler::validateInput().
This method can be used for additional validation at the content object level. It must return an array in the following format:

array( 'is_valid' => false, 'warnings' => array() );

When the is_valid flag is set to false, the warnings will be displayed to the user.
The warnings array should contain items as follows:

array( 'text' => 'Warning text displayed to user.' );

Example:

function validateInput( $http, &$module, &$class, $object, &$version, $contentObjectAttributes, $editVersion, $editLanguage, $fromLanguage, $validationParameters )
{
   $result = array( 'is_valid' => false, 'warnings' => array() );
   $result['warnings'][] = array( 'text' => 'Warning text displayed to user.' );

   return $result;
}