Components

Flow Viritin provides enhanced versions of many Vaadin core components as well as entirely new UI building blocks.

Fluent API wrappers

Most Vaadin core components have a “V”-prefixed wrapper that returns the component itself from setter-like methods (named with* instead of set*). This allows configuring components inline, for example in field declarations, without introducing extra variables.

VGrid

An enhanced Grid with sensible defaults, records support, an advanced styling API and a grid-wide CellFormatter. See the dedicated VGrid page for details and examples.

Uploads & Downloads

  • UploadFileHandler – Upload component with a straightforward InputStream-based Java API. Throttles concurrent connections and works with Spring Boot without special configuration.
  • DynamicFileDownloader – Generate file downloads on the fly by writing to an OutputStream.
  • ByteArrayUploadField – Bind a file upload to a byte[] property with Binder.

Tree & TreeTable

  • Tree – Visualise hierarchical structures with a simple API.
  • TreeTable – Like TreeGrid but with an easier population API, proper lazy loading, and scrolling-to-item support.

Other components

  • RichText – Display HTML or Markdown content.
  • CustomLayout – Render raw HTML while placing Vaadin components inside.
  • BorderLayout – Swing-style layout implemented with CSS Grid.
  • PagingGrid – Traditional paging for Grid.
  • DeleteButton – Confirmation dialog + error styling to prevent accidental clicks.
  • PrintPdfButton – Generate a PDF on the server and open the browser's native print dialog for it.
  • DisclosurePanel, Badge, VSvg, and more.