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Questions tagged [vaadin8]

Vaadin 8 is the last primarily GWT-based version of Vaadin, an open-source Java web application framework. EOL Feb 2022, extended maintenance commercially available until Feb 2032.

Vaadin 8 is the last primarily GWT-based version of Vaadin, an open-source Java web application framework. Free support for Vaadin 8 ends in February 2022, extended maintenance commercially available until February 2032.

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Vaadin 8 creating a tree with Enum class

I am still new to Vaadin so, please bear with it. We are currently migrating from Vaadin framework 8.0 to 8.3.2. One of the reasons of doing is that there's a requirement of using tree for the menu. Since 8.0 doesn't have tree, the workaround for…
Melvin Mah
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Pass and receive data in Vaadin 8

I have a view: @SpringUI(path="order") @Title("order") public class OrderGUI extends UI{ and I would pass parameter to other: @SpringUI(path="orderNumber") @Title("Order number") public class GetOrderNumber extends UI { I tried to send…
Michu93
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vaadin 8 combobox not execute addSelectionListener

I have problem with my combobox. When I select an item from my combobox it does not go to my addSelectionListener except for the first time when the program starts. How to make it take the user's selection. here is the code: private Tirage…
Junon
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Vaadin grid Wrong selection

I am writing an Vaadin Application at the moment and I have a problem with the grid selection. If I first edit an item, and delete it afterwards I get an exception. org.springframework.orm.jpa.JpaObjectRetrievalFailureException: Unable to find…
Ace of Spade
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How to edit two comboboxes with listeners in a Vaadin 8 grid editor

I have two ComboBoxes in my editable Grid where the second ComboBox based on the first one. So for example you would have Car Make and then Car Model. When you change the make combobox the model combobox then changes accordingly. With that in mind I…
Stephane Grenier
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NullPointerException with Spring Boot 2.0.0.RELEASE with Vaadin 8.3

I am using Spring Boot version 2.0.0 with Vaadin 8.3. Everything in my eclipse is working fine, but when I created WAR file and deployed into my tomcat 8.5.29 Server, the Vaadin UI throws NullPointerException. Everything else except Vaadin…
krishna
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How to load CSS in Vaadin project

Is there a setting that enables CSS in a Vaadin Project? I find that sometimes the changes I make in the .csss file load and sometimes they don't without any obvious reason. I tried clearing the cookies in my browser, compiling the theme, setting…
Eight Rice
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Vaadin 8 PushMode.MANUAL - What is this mode used for?

Vaadin Framework 8 offers built-in support for Push technology as discussed in the manual. We can specify any of three modes, one of which is PushMode.MANUAL, documented as: Push is enabled. A bidirectional channel is established between the client…
Basil Bourque
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VaadinSession failing in Spring Boot application

I'm trying to make a simple Vaadin application integrated with Spring Boot / Spring Session / Spring Security, nothing too fancy since the client requirements aren't that demanding. I managed to set up a basic environment with Spring Session JDBC…
Manuel Santiago Yépez
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Vaadin/Wildfly Swarm Demo not working

I'm trying to recreate the Vaadin Wildfly Swarm demo with the version 8 from Vaadin, but it doesn't work! I'm following the demo as we can find here: https://github.com/wildfly-swarm/wildfly-swarm-examples/tree/master/vaadin If we download the…
Victor
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Vaadin grid clear selection row

I'm building a project based on the CRUD example of vaadin 8. I have a grid that opens a form on the right side of my page, this form has a cancel button that close this form and clear the grid selection. I'm getting this…
AgamenonD2
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Getting the IP address in Vaadin behind an apache/tomcat setup (mod_jk) always gives the server's IP address

Using the recommend Vaadin code to get an IP address in a setup with apache on the front and tomcat behind using mod_jk always results in getting the Server's IP address: Page.getCurrent().getWebBrowser().getAddress(); I caught this snippet which…
Stephane Grenier
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Vaadin FormLayout does not align centered

I have a VerticalLayout wrapping a Label and a FormLayout. The VerticalLayout aligns its components centered per default. The Label is aligned centered as expected. The FormLayout not. When I look at the component tree in the debug view the…
David Artmann
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How to get startPosition when Drag a widget (vaadin 8.3)?

I have a component in a panel, with DragSourceExtension, I can pass any data by DragData, but I can not get relativeX and Y with DragStartEvent. I can get relativeX and Y of end position with DropEvent. In vaadin 7, with…
Alireza
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Problems with installation of Vaadin8 in Eclipse

I'd like to install Vaadin 8 in a fresh Eclipse IDE So I downloaded Eclipse [Oxygen.2 Release (4.7.2) Build id: 20171218-0600], installed it, and from Help/Eclipse Marketplace I loaded the Vaadin Eclipse Plugin 4.0.0.final (changed to 4.0.1…
Martin Rösch
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