Excuse me, but i cant understand: why component doesn't work. Using Vaadin

Directory pdf-browser
1

Excuse me, but i cant understand: why component doesn’t work. Using Vaadin 14.2.3.

…
InputStream is, String fileName;
…

MemoryBuffer buffer = new MemoryBuffer();
upload = new Upload(buffer);
upload.addSucceededListener(event → {

		is = buffer.getInputStream();
		fileName = buffer.getFileName();

}
Then

sm.addItem(“Открыть документ”, e → {

StreamResource streamResource = new StreamResource(fileName, () -> is);
streamResource.setContentType("application/pdf");
streamResource.setCacheTime(0);
	
PdfBrowserViewer viewer = new PdfBrowserViewer(streamResource);
viewer.setHeight("100%");
add(viewer)

});

Result in attachment.

18349026.png
18349026.png1549×835 90.9 KB

2

Maybe you need to call setHeightFull() on the layout?

3

I have the same problem.

Vaadin 14.3.4,
plugin 3.0.1

InputStreamFactory just isn’t called
18431026.png

4

Did you try setting a height for the parent layout?

5

Yes of course:

streamResource 
= new StreamResource(customFile.getPdfFileName(), () -> convertService.getConvertedToPdfInputStream(customFile));

pdfBrowserViewer = new PdfBrowserViewer(streamResource);
pdfBrowserViewer.setHeight("100%");
pdfBrowserViewer.setWidth("100%");
panel.setHeightFull();
panel.add(pdfBrowserViewer);

The method getConvertedToPdfInputStream() method is not called.

With version 1.0.0-alpha/1.0.0-alpha1 works fine

6

Ah sorry, I think the problem in your app is different to the one in the first question of this thread.

7

Are you able to provide the full source code?

8

The complete code is quite large. You are right, I will do a small test and send it with the result

9

Code:

public class CustomFileDemo extends VerticalLayout {
    public static final String route = "customFileUploadOnDemand";

    public CustomFileDemo() {

        log.info("CustomFileDemo - start");

        this.setSizeFull();
        StreamResource streamResource = new StreamResource("AnyFile.pdf",
            this::getInputStream);
        PdfBrowserViewer pdfBrowserViewer = new PdfBrowserViewer(streamResource);
        pdfBrowserViewer.setHeight("100%");

        VerticalLayout previewPanel = new VerticalLayout();
        previewPanel.setHeightFull();
        previewPanel.setWidthFull();
        previewPanel.add(new Label("Begin"), pdfBrowserViewer, new Label("End"));

        this.add(previewPanel);
        log.info("CustomFileDemo - initialized");
    }

    InputStream getInputStream() {
        InputStream inputStream = null;
        try {
            inputStream = new FileInputStream("/Users/pathToPdf/Work/IntelliJ_WS/workbaskets/src/main/resources/111.pdf");
        } catch (FileNotFoundException e) {
            log.info("File not found");
            e.printStackTrace();
        }
        log.info("File is here");
        return inputStream;
    }
}

It works nice with 1.0.0-alpha1 or 1.0.0-alpha.
In log:

10:31:02 [https-jsse-nio-9443-exec-2]
 INFO  d.x.w.filesCache.CustomFileDemo - CustomFileDemo - start
10:31:02 [https-jsse-nio-9443-exec-2]
 INFO  d.x.w.filesCache.CustomFileDemo - CustomFileDemo - initialized
10:31:02 [https-jsse-nio-9443-exec-2]
 INFO  d.x.w.commonUI.WorkbasketApp - WorkbasketApp. showRouterLayoutContent. contentLength: 0
10:31:02 [https-jsse-nio-9443-exec-2]
 INFO  d.x.w.commonUI.WorkbasketApp - WorkbasketApp. New content:  
10:31:02 [https-jsse-nio-9443-exec-2]
 WARN  c.v.f.s.c.r.AbstractRpcInvocationHandler - Got an RPC for non-existent node: 11
10:31:02 [https-jsse-nio-9443-exec-10]
 INFO  d.x.w.filesCache.CustomFileDemo - File is here

but with 3.0.1 looks like that:

10:41:27 [https-jsse-nio-9443-exec-8]
 INFO  d.x.w.filesCache.CustomFileDemo - CustomFileDemo - start
10:41:27 [https-jsse-nio-9443-exec-8]
 INFO  d.x.w.filesCache.CustomFileDemo - CustomFileDemo - initialized
10:41:27 [https-jsse-nio-9443-exec-8]
 INFO  d.x.w.commonUI.WorkbasketApp - WorkbasketApp. showRouterLayoutContent. contentLength: 0
10:41:27 [https-jsse-nio-9443-exec-8]
 INFO  d.x.w.commonUI.WorkbasketApp - WorkbasketApp. New content:  
10:41:27 [https-jsse-nio-9443-exec-8]
 WARN  c.v.f.s.c.r.AbstractRpcInvocationHandler - Got an RPC for non-existent node: 11

18435222.png

10

Thanks for the code. Have you tried with getClass().getResourceAsStream("/report.pdf")? The file should be located in the resources directory. The getInputStream method is actually called, so I wasn’t able to reproduce the issue.

11

I guess the problem is in the build tool - I am using gradle: