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 Vaadin 14 was superseded by Vaadin 23 in March 2022.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.
Questions tagged [vaadin14]
430 questions
8
votes
1 answer
Vaadin Flow Grid with Row-Index
How do I add a row-index column to a grid, that will not be sorted along user-sorting of rows?
The solution must not include changes to any polymer template, but should rather be done in java.
kscherrer
- 5,486
- 2
- 19
- 59
8
votes
2 answers
How to display a Grid cell tooltip in Vaadin Flow
With Vaadin 8 you could set a tooltip for a Grid cell. This feature is not available in Vaadin Flow (currently using v 11.0.0). Is there an alternative?
rmuller
- 12,062
- 4
- 64
- 92
6
votes
1 answer
Vaadin 14 show simple HTML Page
I made some kind of internal manual for a webapp that i am developing. I am using Spring Boot and Vaadin 14. How to implement a button that shows that document? The html doc is in my resources folder. I wonder if i am stupid. Or should i write my…
Stimpson Cat
- 1,444
- 19
- 44
6
votes
1 answer
NullPointerException when initializing VaadinServlet using Vaadin 14
I am working on upgrading a Vaadin 8 application to Vaadin 14. I had to manually define an extension of VaadinServlet rather than using Vaadin 14's automatic servlet registration, as I need it to be mapped to a specific URL pattern. I am using…
Evan
- 175
- 7
6
votes
2 answers
Unable to create a Configuration, because no Bean Validation provider could be found - Vaadin 14 Spring Boot
I'm trying to use CRUD-add-on with Vaadin 14. But when I try to run this view:
@Route("configuration")
@JsModule("./styles/shared-styles.js")
@CssImport("./styles/views/main/main-view.css")
public class ConfigurationView extends AppLayout {
…
euraad
- 2,467
- 5
- 30
- 51
6
votes
1 answer
How to build a working jar file in Vaadin 14 + Spring Boot?
Im trying to run my Vaadin14 project to production and my application cant find any vaadin flow components. I have a default application.properties and POM, and downloaded it from here https://vaadin.com/start/latest. I already have tried,
delete…
garagumo
- 133
- 2
- 12
5
votes
0 answers
Vaadin 14 - issue Cannot invoke "com.vaadin.flow.di.Lookup.lookup(java.lang.Class)" because "lookup" is null
I have a Vaadin 14.7.5 application running fine on a CentOS Linux release 7.8.2003 (Core) VPS deployed on Tomcat 8.5.39 running Java 17+35-LTS-2724.
However when I deploy the same application to a newly created CentOS Linux release 7.9.2009 (Core)…
Patrick Engels
- 51
- 1
5
votes
3 answers
Vaadin 14: remove broadcast registration on page refresh
I followed the Vaadin tutorial (Creating Collaborative Views) for broadcasting events and register on them.
Registration eventRegistration;
@Override
protected void onAttach(AttachEvent attachEvent) {
log.debug("In attach...");
UI ui =…
user15905221
- 95
- 4
4
votes
2 answers
How to style vaadin-upload-file component inside Vaadin Upload
I would like to style Vaadin Upload component (vaadin-upload) by changing appearance of the elements in file list, e.g. hide commands buttons (start, remove, retry). The file list contains vaadin-upload-file elements.
For now I'm only able to…
kamillo
- 131
- 7
4
votes
2 answers
How do you get the column order for the Grid in Vaadin 14?
In Vaadin 8 you could just do the following for example to get a list of the columns in the order displayed on the screen.
String columnOrderPreference = ((List)grid.getColumns()).stream()
.map(Grid.Column::getId)
…
Stephane Grenier
- 15,527
- 38
- 117
- 192
4
votes
1 answer
Vaadin 14 FormLayout Labels are in the wrong position
I am trying to set up a FormLayout using Vaadin 14 and no matter what I try, the labels appear below the form fields. I would like them to appear to the left of the fields, but even getting them to appear above the fields would be a step in the…
Evan
- 175
- 7
4
votes
1 answer
How to Change the Vaadin-Select Hover colour
Current Hover Color
I want to change the hover color when we move mouse over the items in the vaadin-select box, by default its coming in light blue color as seen in screenshot 1 but I want to change to some other color. How to do that ?
I have…
ritul sinha
- 43
- 6
4
votes
1 answer
Vaadin14 - how to set Helper Text above the field in ComboBox
I know there is a way like this
listBox.addThemeVariants(CheckboxGroupVariant.LUMO_HELPER_ABOVE_FIELD);
But ComboBox does not have addThemeVariants. So How we can set the helper text above the field.
egemenakturk
- 365
- 1
- 17
4
votes
1 answer
Vaadin 14 - Grid Column Header Formatting
I have some special characters in some of my column headers, such as "-" and "*". When these column names are rendered in the Grid, they include a space before and after the sequence.
In other words, if my original string was "CUR-A1" then it would…
schaphekar
- 495
- 1
- 5
- 18
4
votes
1 answer
Adding Checkboxes to Vaadin Grids
I have constructed a Grid in Vaadin 14 using a parser to extract from files as shown below:
Grid grid = new Grid<>();
try {
List entries = reader.readAll();
// Assume the…
schaphekar
- 495
- 1
- 5
- 18