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Questions tagged [vaadin14]

Use this tag for version specific questions about Vaadin 14 - the open-source platform for web application development. When using this tag also include the more generic [vaadin] tag where possible. Vaadin 14 was superseded by Vaadin 23 in March 2022. Vaadin 14 is supported until Aug 2024, extended maintenance commercially available until Aug 2034.

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Why maven use the old version of the Vaadin plug-in when I run the project in IntelliJ?

I use Wildfly 20 and IntelliJ latest version with vaadin-maven-plugin 14.2.2 in my pom.xml and pnpm enabled. A very ugly problem happens what I can't understand why. When I run my project via IntelliJ run configuration something strange happens.…
itro
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vaadin 14.2.2 Grid not creating an output

I am playing around with vaadin 14.2.2 for testing purpose. However, I got to the first problem using Grid immediately. The Example from https://vaadin.com/docs/v14/flow/components/tutorial-flow-grid.html List people = Arrays.asList( …
cbit
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How to remove wrapped line from Combobox option. - RapidClipseX/Vaadin 14

I am Using RapidclipseX and Vaadin 14, I want to know how to make this Combobox option not wrapped? Thanks in advance.
Prashant Kumar
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java.lang.IllegalStateException: Can't move a node from one state tree to another - Vaadin

Why does I get this error when I close the tab in my web browser and go back to the same URL page again? Error: java.lang.IllegalStateException: Can't move a node from one state tree to another. If this is intentional, first remove the node from its…
euraad
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Possible to download JPA repository in Vaadin as CSV file?

Assume that we have defined a entity and it's connected to a database. Now we can access the database by using a repository. @Autowired private DataLoggRepository dataLoggRepository; If I want to get all the rows from the database and download it.…
euraad
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free component for diagram/chart/graph in Vaadin 14

I would like to ask what is the free component for diagram/chart/graph in Vaadin 14? I am using Vaadin14 and Spring boot in my project,
Fariba
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Cannot cast java.util.Collections$EmptySet to java.util.HashSet

I'm using Vaadin14 and Java 1.8. I want to implement a multi-select combobox, which is why I am using the following Vaadin addon:…
Cribber
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Vaadin 14: invalid descriptor for field c - Why do I get that error?

Why do I get this error at Vaadin 14 when I re-start my web application? Notice re-start. Not start from beginning. My web application works fine and I get no errors for it inside the code. So I cannot tell you where the problem is, only that I get…
euraad
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Validate vaadin combobox custom input (integers only)

I have an input form with a combobox which displays integer values. I want the user to be able to add new integer values to this combobox. I need to validate whether the input are only numbers (and not letters) - if it isnt a valid integer I want to…
Cribber
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Vaadin BeanCreationException: during trying to call save method of my service class

Hi I have a little Vaadin project. In there, I've a UserUtils.class which has a createNewUser method which looks like this: LoginView: import com.vaadin.flow.component.html.H1; import com.vaadin.flow.component.login.LoginForm; import…
Daniel Tran
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Vaadin Gradle plugin: Task vaadinBuildFrontend fails with dependency error

My app is based on Spring Boot 2.2.5 including Vaadin 14. The project is built with Gradle 5.6.4 using the Vaadin Gradle Plugin 0.6.0 The Jenkins build pipeline fails with the following error: Welcome to Gradle 5.6.4! Here are the highlights of…
Robert Strauch
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How to register MainView to a ComponentEvent that another View fires?

How do I register a MainView to an event that another View fires? I have tried ComponentUtil.addListener() but it does not work for me. On the other hand I am not even sure if the View that fires the event is even created at the point the MainView…
Michael Kemmerzell
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Vaadin 14: Resize TextArea after resizing window

with Vaadin 14.1.19 and a Vaadin "My Starter Project"-project I tried to create a multiline TextArea. At first glance it works fine, but when resizing a TextArea, it does not adapt the number of lines. This is my code: package…
S. Doe
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Vaadin 14.1.17 - Get element selected in chart - Java

Hello i'm wondering how to retrieve the clicked element from a pie chart in Vaadin 14.1.17. I'm using a classic pie with DataSeries and some values inside and i want to get the current selected item from a click listener DataSeries…
dBocca
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Vaadin14 fullcalendar applyChangesOnEntry return wrong resource

I'm having some problem with fullcalendar and I can't figure out how to solve the problem. My code was previously working on vaadin 13 with fullcalendar 1.9.2. My code: calendar.addEntryDroppedListener((EntryDroppedEvent e) ->…
Carlo Zanocco
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