allow to reupload data overlay file without closing dialog

CHANGELOG

@@ -9,6 +9,8 @@ minerva (12.3.1~beta.1) unstable; urgency=low
   * Bug fix: invisible layer shouldn't be shown in the on th map (#813)
   * Bug fix: list of availbale annotators is sorted alphabetically (#815)
   * Bug fix: redirect url from export panel is fixed (#819)
+  * Bug fix: allow to reupload the same file without closing add overlay dialog
+    (#833)
   * Bug fix: protein types are sorted properly in "Select valid annotations"
     dialog (#815)
   * Bug fix: if there is a description of (sub)map then it is available in

frontend-js/src/main/js/gui/AddOverlayDialog.js

@@ -94,7 +94,9 @@ AddOverlayDialog.prototype.createGui = function () {
     name: "overlay-file"
   });
   fileInput.addEventListener("change", function () {
-    return self.processFile(fileInput.files[0]).then(null, GuiConnector.alert);
+    return self.processFile(fileInput.files[0]).then(function () {
+      $(fileInput).val("");
+    }).catch(GuiConnector.alert);
   }, false);
   content.appendChild(fileInput);
   content.appendChild(guiUtils.createNewLine());