BrowserFrame with pdf content in Firefox

Vaadin 6 / 7 / 8
1

Hi all!

First of all I want to apologize if I am about to ask something that has already been asked,
but i can’t find the answer to my question anywhere.

I have BrowserFrame in window that shows pdf content from StreamResource. When i close the window most of the times pdf content opens in a new tab (I think when the file has more pages). The same thing happens if I setVisible(false) to the window. In Chrome everything works as expected.

Can I somehow overcome the problem, so that it won’t open a new tab every time?

Here is a simple code how I add streamResource

browserFrame.setSource(createResource(fileByts, fileStr));
browserFrame.setSizeFull();
private StreamResource createResource(byte[] file, String fileName) {
  StreamResource resource = new StreamResource(() -> {
    try { return new ByteArrayInputStream(file); }
    catch (Exception e) { e.printStackTrace(); return null; } },fileName);
  resource.setMIMEType("application/pdf");
  return resource; }

Thanks,
Klemen

2

Hi Klemen.

I have same problem when stream is still loading.

3

Hi.
I didnt find a solution so I used javascript viewer for the job: http://viewerjs.org/. So now I’m not depending on the browser.

4

Hi,

I’m having the same problem. The problem occurs in Firefox whenever more than one or two pages are loaded. Does anyone know how to solve this issue? Thanks!

5

Hi,

I’ve splitted the close method in two phase for testing purpose:

@Override public void close() {
   if (browserFrame.isAttached()) {
      bodyLayout.removeComponent(browserFrame);
   else {
      super.close();
}

Obviously the window go away only after second click, but without new tab problem in Firefox.
I’ve tested a working (and dirty) single click solution:

@Override public void close() {
   if (browserFrame.isAttached()) {
      bodyLayout.removeComponent(browserFrame);
      UI.getCurrent().setPollInterval(100);
      scheduledExecutor.schedule(new WindowCloseTask(this), 350L, TimeUnit.MILLISECONDS);
   }
   else {
      super.close();
      UI.getCurrent().setPollInterval(-1);
   }
}

WindowCloseTask is a simple Runnable class

class WindowCloseTask implements Runnable{
   private Window w;
   
   WindowCloseTask(Window w){
      this.w=w;
   }

   @Override public void run() { w.close(); }
}
6

Thank you! That seemed to work!