Upload should preserve MIMEType after first selection (#11745)

* Upload should preserve MIMEType after first selection

Fix #11698

Automated test is not run locally, need to continue with it

* Remove unused imports

* Add sleep time in testing purposes

* Getting a new instance of an input, after file is downloaded

Exclude IE from tests. Throws https://stackoverflow.com/questions/23883071/unhandled-alert-exception-modal-dialog-present-selenium , but checked manually and it works

1 files changed, 6 insertions, 0 deletions

diff --git a/client/src/main/java/com/vaadin/client/ui/VUpload.java b/client/src/main/java/com/vaadin/client/ui/VUpload.java
index 56532b4a19..2f4b62a47f 100644
--- a/client/src/main/java/com/vaadin/client/ui/VUpload.java
+++ b/client/src/main/java/com/vaadin/client/ui/VUpload.java
@@ -121,6 +121,8 @@ public class VUpload extends SimplePanel {
 
     private boolean immediateMode;
 
+    private String acceptMimeTypes;
+
     private Hidden maxfilesize = new Hidden();
 
     /** For internal use only. May be removed or replaced in the future. */
@@ -254,6 +256,9 @@ public class VUpload extends SimplePanel {
         fu = new VFileUpload();
         fu.setName(paintableId + "_file");
         fu.getElement().setPropertyBoolean("disabled", !enabled);
+        if (acceptMimeTypes != null && !acceptMimeTypes.isEmpty()) {
+            InputElement.as(fu.getElement()).setAccept(acceptMimeTypes);
+        }
         panel.add(fu);
         panel.add(submitButton);
         if (isImmediateMode()) {
@@ -424,5 +429,6 @@ public class VUpload extends SimplePanel {
         } else {
             InputElement.as(fu.getElement()).setAccept(acceptMimeTypes);
         }
+        this.acceptMimeTypes = acceptMimeTypes;
     }
 }