diff options
| -rw-r--r-- | src/com/vaadin/ui/Upload.java | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/com/vaadin/ui/Upload.java b/src/com/vaadin/ui/Upload.java index a15495fbc7..60c31fbc67 100644 --- a/src/com/vaadin/ui/Upload.java +++ b/src/com/vaadin/ui/Upload.java @@ -108,6 +108,14 @@ public class Upload extends AbstractComponent implements Component.Focusable { /* TODO: Add a default constructor, receive to temp file. */ /** + * Creates a new instance of Upload. + * + * The receiver must be set before performing an upload. + */ + public Upload() { + } + + /** * Creates a new instance of Upload that redirects the uploaded data to * stream given by the Receiver. * @@ -131,6 +139,11 @@ public class Upload extends AbstractComponent implements Component.Focusable { * @param upload */ public void receiveUpload(UploadStream upload) throws UploadException { + if (receiver == null) { + throw new IllegalStateException( + "Receiver not set for the Upload component"); + } + if (!isUploading) { throw new IllegalStateException("uploading not started"); } |