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Questions tagged [vaadin-flow]

Use the [vaadin] and [vaadin-flow] tags for any posts relating to the use of Vaadin Flow. For posts related to any other Vaadin topic, such as Fusion or a specific component, instead tag the post with its corresponding tag, for example: [vaadin-fusion] or [vaadin-upload], respectively.

Vaadin Flow is the new generation of the user-interface toolkit for building professional-looking, business-oriented single-page web apps in Java. Now based on standard Web Components technology.

Vaadin Flow is the major re-write of the venerable Vaadin Framework tool for building professional-looking business-oriented user-interfaces for web apps. This new generation of Vaadin replaces the internal use of GWT with the use of modern Web Components technology.

Vaadin apps are written in Java, executing server-side in a Java Servlet web container. At runtime Vaadin automatically renders a web-standards based user-interface in the client-side web browser via HTML, CSS, JavaScript, DOM, AJAX, XML & JSON, WebSocket, and Push technologies, all done transparently to the Java programmer.

The current Long Term Support (LTS) version of Vaadin is 14. The previous LTS version is 10. Version 10 succeeded Vaadin 8 (Framework).

The current major version is 22.

The next LTS version will be version 23, slated for March 2022.

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Vaadin 13 TextArea Html Styling

I have two textAreas. For 1st one I want to make labels align row center, for the 2nd column flew-start. I give for every of them own Id and created separate html files for each. But when 1st textarea changes the 2nd one changes like the 1st, I…
Champ
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No data shown for Vaadin-flow Grid if I set the Items in backend and create a polymer-template

I have a problem with loading the data for a grid in the backend and create the columns in the polymer template. The number of columns is correct but no data will be shown. I would really use the vaadin-grid-column feature cause of the sorting and…
spinner0815
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Vaadin 10+ Upload component with Spring-Boot 2+

has anyone been able to make Vaadin's Upload component working with Spring Boot? workarounds like disabling spring's multipart upload doesn't work for me. (through I need multipart) this is my project pom.xml config: …
greengold
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How can I see details to grid in Vaadin flow?

In my Vaadin flow project, I have a grid and I set some items but it shows like grid data items I want a decent format that a user can see specific details not like. Any idea or is there any component in vaadin to make this pretty?
Kamrul Hasan
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Script Error after upgrading to Vaadin Grid Pro

I've been prototyping a small web app with the free vaadin grid component, and recently tried using the commercial trial grid pro. Upon updating my maven pom and updating my class references from grid -> gridpro, I am running into error screens with…
user10088038
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Vaadin Flow Component with Template API

I try to create a vaadin component with polymer. I have used vaadin/flow-spring-tutorial as starting point. But I don't understand how to edit a template. The template looks like this:
kfaria
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does vaadin 12 charts support zooming from java and declarative html?

I found https://api.highcharts.com/highcharts/chart.zoomType which implies that zooming is possible, but I couldn't figure out either the java code to enable zooming or the html code (in the declarative template html files) to enable zooming. Is…
Jonathan Sylvester
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ComboBox with hidden keys

Is it possible in vaadin 12 to have comboboxes such that it displays a user-friendly value but behind the scenes it stores a hidden code? I found this example from 5 years ago but it doesn't apply to Vaadin 12 comboboxes:…
Jonathan Sylvester
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Vaadin Flow: Navigation broken(?) when using SplitLayout and @ParentLayout

[EDIT] Solution at the end of the question [/EDIT] Context I currently struggle to implement a Component which is based on the SplitLayout that looks like this: The idea was that the layout with the class="outer" (the highlighted line) would be a…
Gerrit Sedlaczek
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How to get Springs default Whitelabel Error Page when using Vaadin Flow

I am currently setting up an admin UI for a service. How is it possible to send the default Spring Whitelabel Error Page instead of the Vaadin Message? The Problem is, that the Vaadin Page is blowing up my Log-Files. So instead of this i want this
Mirco
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Vaadin flow empty view

How can i create empty view ui in vaadin-flow that must be empty header and body. My created UI has many default tags and scripts inner header and…
Naranmandakh Tsogoo
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Using Vaadin Flow without internet connection

Is it not possible to develop Vaadin Flow locally on my laptop without an internet connection? Today I encountered a web page with this message when trying to run my new Vaadin Flow 12 app using Jetty web container bundled in the Vaadin…
Basil Bourque
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Vaadin Flow Exception on Application call - VaadinSession cannot be cast to VaadinSession

We're currently developing a new Vaadin Web Application based on a Vaadin Flow Starter pack. It runs with a jetty server, that is started through a maven call. Lately an error has been popping off quite often that prevents me from accessing the…
Benedikt Schmidt
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Vaadin flow - Grid column empty

Vaadin 11.0.1 Layout is one top grid and to bottom grid (one on left, one on right) Here is how I create my page: public class InformationMainView extends VerticalLayout { private Grid gridRejet = new Grid<>(); private…
Tyvain
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upload addon vaadin to repository maven.vaadin

good day, I would like to load my addon vaadin in maven vaadin, I have already loaded it in the vaadin directory, but I do not know how to publish it in the maven vaadin repository. I thought that this process was done automatically when uploading…
Sergio Hilerio
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