File Download Wrapper

Helper add-on for making easy clickable file downloads.

This add-on is meant as a semi-replacement for the FileDownloader extension in earlier Vaadin versions. You can use it to create clickable download links or wrap components like buttons to achieve the same.

Note: intentionally doesn't support dynamic download behavior (like programmatically generating the file on click).

Sample code

    TextField textField = new TextField("Enter file contents");
    FileDownloadWrapper link = new FileDownloadWrapper("textfield.txt", () -> textField.getValue().getBytes());
    link.setText("Download textfield.txt that has contents of the TextField");

        Button button = new Button("Click to download");
        FileDownloadWrapper buttonWrapper = new FileDownloadWrapper(
            new StreamResource("foo.txt", () -> new ByteArrayInputStream("foo".getBytes())));
        buttonWrapper.wrapComponent(button);
        add(buttonWrapper);

Links

• Source Code

Compatibility