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Questions tagged [vaadin23]

Use this tag for version-specific questions about Vaadin 23 - the open-source platform for web application development. When using this tag, also include the more generic [vaadin] and [vaadin-flow] tags where applicable. Vaadin 23 superseded Vaadin 14 in March 2022.

191 questions
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Vaadin: Do I need to persist package.json and package-lock.json?

When you build Vaadin it generates two files: package.json and package-lock.json. Do I need to persist them in my VCS (Git in my case)?
greenButMellow
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4
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1 answer

Vaadin 23, converting inline Polymer template for grid columns renderes "NaN" instead of values

I am trying to convert some inline polymer templates for grid columns, and the rendered value in the browser ends up as “NaN” for some reason. So I simplified the template to reproduce the issue as the…
STaefi
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3
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1 answer

Vaadin 23 JavaScript import issue

I have java class which extends the Vaadin Div class, which should be a cookie warning popup (implementation is not yet complete): //imports @CssImport("css/info_popup.css") @JsModule("js/script.js") @Tag("info_popup") public class CookiesDiv…
Achille004
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3
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1 answer

Vaadin Maven Multimodule application with vaadin 23

Is there any maven archetype for vaadin 23 multimodule application like we have for vaadin 8 or any online way to create vaadin maven multimodule web app.
tushar sharma
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2
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0 answers

Vaadin 23 WebSockets iPhone updates with delays

I noticed a strange behavior - sometimes (not always) on my iPhone I click a button with asynchronous logic(@Push), but nothing happens. Then I press another button on the same screen and can see that the response for the first button comes, but now…
alexanoid
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2
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0 answers

Vaadin 23 Resynchronizing UI by client's request - If you are using push with a proxy, make sure the push timeout smaller proxy connection timeout

From time to time I still receive the following error: c.v.f.s.communication.ServerRpcHandler : Resynchronizing UI by client's request. A network message was lost before reaching the client and the client is reloading the full UI state. This…
alexanoid
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2
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0 answers

Vaadin 23 Stateless Authentication add custom attributes to JWT

Based on the following example https://vaadin.com/blog/jwt-authentication-with-vaadin-flow-for-better-developer-and-user-experience, I'm trying to implement hybrid-stateless application. Based on the information inside of the JWT token, I'm be able…
alexanoid
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2
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1 answer

How to propagate validation to CustomField sub Components

I have a simple CustomComponent with Person being an simple data class with two string TextFields: name and sname. This is the class: data class Person(var name:String, var birth:LocalDate) class PersonField : CustomField(){ private…
Giuseppe Manzo
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2
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1 answer

Vaadin 23 override internal error message

when an error occurs inside the application, the user sees the following message: Is it possible to override it? I aaded the following: public class CustomErrorHandler implements ErrorHandler { private static final Logger logger =…
alexanoid
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2
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1 answer

Vaadin 23 lazy loading Details component

I love Vaadin Details component. But it looks like it is always pre-rendered. Is it possible to turn the Details component into the lazy-loading mode? I'd like to render the Details content when user expands the panel. Is it possible to achieve with…
alexanoid
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2
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1 answer

Vaadin 23 add click listener to TextField component

Is it possible to add ClickListener to a TextField component? I render a read-only TextField in the Grid column component. The column has expandable details. But when I click on TextField there - nothing happens. With help of ClickListener I plan…
alexanoid
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2
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0 answers

ComponentRenderer on CheckboxGroup make the label 'not clickable'

I have this CheckBoxGroup with a custom renderer: It is working well EXCEPT you can't click on the label to select le checkbox. Here is the renderer code: CheckboxGroup etatsCheckBox = new CheckboxGroup<>("Etats" ,…
Tyvain
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2
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1 answer

How do I dynamically render an image using LitRenderer and StreamResource in Vaadin Flow?

I'm trying to create a LitRenderer for dynamically generated images that can be either gif/jpg/png files using a StreamResource in Vaadin. I also have the byte[] and so on but I figure using a StreamResource is the better way to do this. That being…
Stephane Grenier
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2
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1 answer

Vaadin 23 preformatted text output

In Vaadin 8 there is the possibility to show preformatted text with help of the Label component - Label preLabel = new Label( "Preformatted text is shown in an HTML 
 tag.\n" +
    "Formatting such as\n" +
    "  * newlines\n" +
    "  *…
alexanoid
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2
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0 answers

Vaadin 23 Grid component and pagination

I'm trying to implement pagination with Grid component. I may be wrong, but unfortunately I'm unable to find a pagination component for Grid in the official Vaadin documentation https://vaadin.com/docs/latest/components/grid. Is there any particular…
alexanoid
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