// Add Drag and Drop to uploader helper

admin-dev/themes/default/template/helpers/uploader/ajax.tpl

@@ -109,7 +109,8 @@
 			dataType: 'json',
 			autoUpload: false,
 			singleFileUploads: true,
-			maxFileSize: {$post_max_size},
+			{if isset($post_max_size)}maxFileSize: {$post_max_size},{/if}
+			{if isset($drop_zone)}dropZone: {$drop_zone},{/if}
 			start: function (e) {
 				{$id}_upload_button.start();
 				$('#{$id}-upload-button').unbind('click'); //Important as we bind it for every elements in add function

classes/Uploader.php

@@ -110,6 +110,9 @@ class UploaderCore
 			case 'k': $bytes *= 1024;
 		}
 
+		if ($bytes == '')
+			$bytes = null;
+
 		return $bytes;
 	}
 

classes/helper/HelperUploader.php

@@ -34,6 +34,7 @@ class HelperUploaderCore extends Uploader
 	const TYPE_FILE                  = 'file';
 
 	private   $_context;
+	private   $_drop_zone;
 	private   $_id;
 	private   $_files;
 	private   $_name;
@@ -59,6 +60,20 @@ class HelperUploaderCore extends Uploader
 		return $this->_context;
 	}
 
+	public function setDropZone($value)
+	{
+		$this->_drop_zone = $value;
+		return $this;
+	}
+
+	public function getDropZone()
+	{
+		if (!isset($this->_drop_zone))
+			$this->setDropZone('$(document)');
+
+		return $this->_drop_zone;
+	}
+
 	public function setId($value)
 	{
 		$this->_id = (string)$value;
@@ -270,7 +285,8 @@ class HelperUploaderCore extends Uploader
 			'files'         => $this->getFiles(),
 			'title'         => $this->getTitle(),
 			'max_files'     => $this->getMaxFiles(),
-			'post_max_size' => $this->getPostMaxSizeBytes()
+			'post_max_size' => $this->getPostMaxSizeBytes(),
+			'drop_zone'     => $this->getDropZone()
 		));
 
 		$html .= $template->fetch();