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Questions tagged [vaadin10]

Vaadin is a web development platform that consists of components, a Java framework, and tooling. Vaadin 10 is the first release that is not based on GWT anymore but supports webcomponents. Vaadin 10 was superseded by Vaadin 14 in August 2019. Vaadin 10 is supported until Jun 2023, extended maintenance commercially available until Jun 2033.

Vaadin 10 (aka Vaadin Flow) is an open source web application framework for rich internet applications.

142 questions
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Vaadin Flow Grid has no height

I have the following Grid showing Java system properties: systemPropertyGrid = new…
Steffen Harbich
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Vaadin 10 Grid add custom image icon

I am using a Vaadin 10 (Flow) Grid to stream data to new rows, and I am trying to add a custom image icon to my TemplateRenderer. I have a TemplateRenderer setup like this: TemplateRenderer sizee = TemplateRenderer. …
Nick Friskel
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two-way binding of paper-radio-group / paper-radio-button value with Vaadin 10

I am using beta3 of Vaadin 10 and I have a html-file bound to a Component (@HtmlImport), which contains a inside of which I have a paper-radio-group. I want the paper-radio-group#selected-property to be bound two way to my model, so…
Bernd Hopp
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Vaadin Java: Import problem with css file

I´m working on the Vaadin Tutorial series part 8 Video: https://www.youtube.com/watch?v=ttuBu8dYNn0 Text Version:…
Maiwand
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Vaadin Dialog is opened after a method execution instead of before

When I click a button, I want to do 2 things: first, to open a Dialog, and second, to execute a method (which is in a jar file). The problem is that, when I click the button, first it is executed the method and after that, the Dialog is opened. The…
Vicente
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Vaadin 14.2: Intercept logout (invalidate session) with BeforeLeaveListener

in my Vaadin 14.2.0 application there is a BeforeLeaveListener to show a confirmation dialog when the input is dirty (= there are unsaved changes in the input fields) to cancel (or intentionally proceed) the navigation: BeforeLeaveListener listener…
S. Doe
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Unkown Key in Vaadin 14 Grid during selection

I'm using a Grid in Vaadin 14. The grid is in multi-selection mode. The selection handler takes a couple of seconds to complete and I'm calling setItems(...) at the end to update the items in the grid. When the user selects another row while the…
herman
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How can I send a notification from Vaadin backend to one or a specific number of (android smartphone) users in a native way?

The problem with PWA is that when the browser is closed (or inactive for smartphones) the user won’t be able to see a notification. Optimally the PWA icon should receives a number++ and a ring tone to catch the users attention. It is possible at…
Java bee
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Getting Error "Vaadin Designer requires Node to be installed" with Intellij IDEA

I recently started learning Vaadin, I installed the Vaadin Designer plugin in IntelliJ IDEA. When I open JS files I'm getting an error like below: I'm using nvm for installing node js in my mac. What are the things that I required to configure to…
Chaitanya
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Vaadin Flow UnsupportedOperationException: Confirmed duplicate message from the client

I want to use Anchor element with Button as child, but in this case i got exception: java.lang.UnsupportedOperationException: Confirmed duplicate message from the client. Expected sync id: 2, got 1. Message start: …
user3911971
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Slot not displayed while using vaadin applayout

I'm trying to build application using vaadin's vaadin-app-layout-flow. here is sample app where I want to create slot-ed parts while using mainlayout which is using app-layout. I want to create some kind of master-detail view so in my…
bilak
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How to fix 'Incompatible Types' error with Vaadin Flow CallBackDataProvider

I tried making a callbackdataprovider with vaadin flow for my grid. But it returns an incompatible types error when i tried making it. I've already minimized the code to the simplest problem version of the problem and it still doesnt work, and i…
Nejc Zagrušovcem
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How to use the NestedBeanPropertyDefinition in Vaadin 12.0.7?

I'm currently trying to use a binder in Vaadin to access a nested property of an object. After googling a bit I found a reference example which sums up my problem quite well (Original post).: Assume you have 2 beans: public class Bean { private…
LOLWTFasdasd asdad
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Vaadin-10/12 Grid Component Renderer Performance issues

I am new to vaadin-10/12 versions and previously we used vaadin-7/8 versions, Now we planning to upgrade vaadin-12 version of all our applications. But we facing following problems with vaadin 12 version Grid : I have created application with using…
amarbogari
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How to make REST Call Logout work with Spring Boot, Vaadin 10 and Keycloak 4?

I tried this with Keycloak 4.4.0.Final and 4.6.0.Final. I checked the keycloak server log and I saw the following warning messages in the console output. 10:33:22,882 WARN [org.keycloak.events] (default task-1) type=REFRESH_TOKEN_ERROR,…
peter_pilgrim
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