add max upload file size config

Bulk upload maximum file size can now be set through
setConfig('maxFileSize', Xbytes )

README.md

@@ -45,7 +45,8 @@ The available configuration options are:
 * 'fieldsNameBlacklist' : array of string referencing the names of fields that wont be available for editing
 * 'folderName' : name of the folder where the images should be uploaded
 * 'sequentialUploads' : boolean, if true files will be uploaded one by one
-		
+* 'maxFileSize' : integer, maximum upload file size in bytes 
+
 Each option can be set through the component's method setConfig( $reference, $value )
 In addition, some configuration option can be set more specifically via individual methods:
 * addFieldNameToBlacklist( $fieldName )

code/GridFieldBulkImageUpload.php

@@ -23,6 +23,7 @@ class GridFieldBulkImageUpload implements GridField_HTMLProvider, GridField_URLH
 		'fieldsClassBlacklist' => array(),
 		'fieldsNameBlacklist' => array(),
 		'folderName' => 'bulkUpload',
+		'maxFileSize' => null,
     'sequentialUploads' => false
 	);
 	
@@ -68,6 +69,13 @@ class GridFieldBulkImageUpload implements GridField_HTMLProvider, GridField_URLH
 		{
 			$value = array_unique( array_merge($value, $this->forbiddenFieldsClasses) );
 		}
+
+		//makes sure maxFileSize is INT
+		if ( $reference == 'maxFileSize' && !is_int($value) )
+		{
+			user_warning("maxFileSize should be an Integer. Setting it to Auto.", E_USER_ERROR);
+			$value = null;
+		}
     
     //sequentialUploads true/false
     if ( $reference == 'sequentialUploads' && !is_bool($value) )

code/GridFieldBulkImageUpload_Request.php

@@ -219,6 +219,11 @@ class GridFieldBulkImageUpload_Request extends RequestHandler {
 		$uploadField->setConfig('downloadTemplateName','GridFieldBulkImageUpload_downloadtemplate');   
     $uploadField->setConfig('sequentialUploads', $this->component->getConfig('sequentialUploads'));
 				
+		$maxFileSize = $this->component->getConfig('maxFileSize');
+		if ( $maxFileSize !== null ) 
+		{
+			$uploadField->getValidator()->setAllowedMaxFileSize( $maxFileSize );
+		}
 		
 		$uploadField->setConfig('url', $this->Link('upload'));