Show Excel File in a Vaadin Window

General
1

Hi there,

I am downloading Excel File from Vaadin - using a StreamResource - this works fine - but it open a new browser tab.
Is there a possibilty to hva ethe Excel File diplay in a Vaadin Window object - so the user of my application will not have to
leave the appilcation Tab to see read Excel files?

I have wriiten my a small class ExcelViewer which looks lik this:

public class ExcelViewer extends Window {
VerticalLayout theLayout = null;

byte[] byteArrayExcelData = null;
String strArchiveID = null;            

public ExcelViewer(byte[] pbyteArrayExcelData, String pstrArchiveID){
    
    byteArrayExcelData = pbyteArrayExcelData;
    strArchiveID    = pstrArchiveID;
    
    // set the size of the Vaadin Window that should contain the Excel data
    this.setResizable(true);
    this.setCaption("Excel Viewer");
    this.setWidth("800");
    this.setHeight("600");
    this.center();

    showExcelFile(pbyteArrayExcelData);
}

private void showExcelFile(byte[] pbyteExcelData) {
    // take care of the excel file
    StreamSource s = new StreamResource.StreamSource() {
        @Override
        public InputStream getStream() {
            return new ByteArrayInputStream(byteArrayExcelData);
        }
    };
    
    StreamResource r = new StreamResource(s, "");
    Embedded e = new Embedded();
    e.setSizeFull();
    e.setType(Embedded.TYPE_BROWSER);
    e.setMimeType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");

    e.setSource(r);
    VerticalLayout theLayout = new VerticalLayout();
    theLayout.setSizeFull();
    theLayout.addComponent(e);
    this.setContent(theLayout);
}

I call it like this:
ExcelViewer theExcelViewer = new ExcelViewer(lbytearyFromArchiveIS, strArchiveID);
this.getUI().addWindow(theExcelViewer);

The window opens, but Excel is still downloaded by the Brwoser and then diplay in a new Tab.

Every hint will be appreciated.

Thanx
Peter