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Vaadin 14.1.0.rc1

Vaadin consists of a set of web components, a Java web framework, configurable themes, tools and a set of app templates.

With every major release, we will change and improve things based on your feedback. This may lead to breaking changes, which will be listed for each part of the platform in the breaking changes section.

Visit vaadin.com to get started.

NOTE

When updating from previous version to 14.1.0.rc1 it might be required to delete package-lock.json file and node_modules directory. In the error message only node_modules is mentioned.

Support

Vaadin 14 is an LTS (long term support) version, which will be supported for 5 years after the GA (general availability) release. More details of our release model are available on our roadmap page.

Vaadin also provides commercial support and warranty.

New and Noteworthy

This is a RC release of Vaadin 14.1 that is going to replace Vaadin 14.0 in the 14.X LTS series.

Vaadin 14.1 introduces several improvements but also three new components: MultiSelectListBox, IntegerField, and BigDecimalField. Also in this release, the Generic Drag & Drop feature will be available as default.

From below you can find a list of new user values provided. All changes to a particular module can be found from GitHub following the link provided in the "Included Projects and Change Log" sections.

New development mode build

Improve your development experience by reducing build time in development mode significantly for big projects. For projects that have a lot of code, usually from external libraries, with 14.0 took a lot of time to start up the server and update after changes with certain reload tools. In 14.1 this will get significantly faster, in particular in Spring Boot projects that don’t have black/white-listing for the big external libraries they are using.

Generic Drag & Drop

Build applications with DnD operations inside the same UI using only Java. 
Make your components draggable with DragSource or drop targets with DropTarget.

@PreserveOnRefresh support for Embedded Flow Components

Improve end-user experience when embedding Vaadin to another page.
In case the user has entered data to the embedded Vaadin part and the page is refreshed, the data is not lost.

Theming JS API aka vaadin-themable-mixin

JavaScript developers have much more convenient API for theming Vaadin components.
Take a deep dive in GitHub.

New component MultiSelectListBox

New field component for multi-selection. The biggest difference to the Checkbox group is that MultiSelectListBox only has one tab stop, whereas, with the Checkbox group, you have to tab through each checkbox individually.

New component BigDecimalField

New field allows you to read/write BigDecimal type data.
Take a look in GitHub.

New component IntegerField

A field that allows you to read/write Integer type data.
More info about IntegerField: Java Integration, WebComponent

RichTextEditor HTML write API

The users are no longer restricted to the controversial Delta format when setting value for the rich text editor, but can now set the value of the editor in HTML alternatively.
APIs available: Java Integration, WebComponent

New Grid column APIs 

Grid.scrollToIndex(index) API: Users can scroll the grid programmatically to a specific index
ColumnResizeListener: Possibility to react to user originated column resize events and read/write new widths to the columns
ColumnReorderListener: Possibility to react to user originated column reorder events and programmatically apply new column order

Upload all finished

You can now react to an event that occurs after all the uploads have finished, regardless if they finished successfully or not.

Crud improvements

The data editor for a selected row can be placed below/on the side of the grid alternatively to the previous mode, where the editor is always in a popup.

Minor changes and improvements

Subtrees in TreeGrid can be refreshed when needed

The developer can react to File rejected for Upload

Grid Dynamic context menu creation on click time

Flow Grid's context menu content can be updated with relevant content right before it opens.

Grid click event column reference

Enables determining which column on a grid row was clicked.

Included Projects and Change Log

Vaadin includes the following projects. Release notes with detailed change logs for each project are linked below.

Projects marked as (Pro) are available for users with Pro or Prime subscriptions. Everything else is free and open source.

Components

Themes

  • Vaadin Lumo theme (v1.5.0)
  • Vaadin Material theme (v1.2.3).

Java Web Framework

Tools

Getting Started with Vaadin 14

App starters

The best way to get started with Vaadin 14 is to go to https://vaadin.com/start and pick an app template for the technology stack you’re interested in.

Manually changing Vaadin version for Java projects

Add the following contents to your project pom.xml. 

<dependencyManagement>
    ...
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-bom</artifactId>
        <version>14.1.0.rc1</version>
        <type>pom</type>
        <scope>import</scope>
    </dependency>
    ...
</dependencyManagement>
<repositories>
    <repository>
        <id>vaadin-prerelease</id>
        <url>https://maven.vaadin.com/vaadin-prereleases</url>
    </repository>
</repositories>
<pluginRepositories>
    <pluginRepository>
        <id>vaadin-prerelease</id>
        <url>https://maven.vaadin.com/vaadin-prereleases</url>
    </pluginRepository>
</pluginRepositories>

Known Issues and Limitations

This is the prerelease version of Vaadin 14.x for evaluating a number of new features and bug fixes. The API in this prerelease version is not considered final and may change based on user feedback.

OSGi support

  • OSGi with npm does not work in V14.0.0-V14.1.0. We are working on a fix for V14.x.
  • OSGi with Bower has problems with V14.0.0-V14.1.0

Flow

  • When updating from previous version to 14.1.0.rc1 it might be required to delete package-lock.json file and node_modules directory. In the error message only node_modules is mentioned.
  • The Template-in-Template feature has some limitations
  • There are some issues in using Web Sockets as the Push channel in certain OSGi environments, but long polling works.

Components

  • The dark theme preset does not work in IE11 when applied to the <html> element.

Migrating from Vaadin 8

See the migration guide

Migrating from Vaadin 10-13

See the migration guide

Reporting Issues

We appreciate if you try to find the most relevant repository to report the issue in. If it is not obvious which project to add issues to, you are always welcome to report any issue at https://github.com/vaadin/platform/issues.

A few rules of thumb will help you and us in finding the correct repository for the issue:

  1. If you encounter an issue when using the HTML/JS API of a component or the component renders incorrectly, the problem is likely in the web component. The web component repositories are named like https://github.com/vaadin/vaadin-button
  2. If you encounter an issue when using the Java API of a component, the problem is likely in the Flow integration of the web component. The Flow component integration repositories are named like https://github.com/vaadin/vaadin-button-flow
  3. If you encounter an issue with Flow which does not seem to be related to a specific component, the problem is likely in Flow itself. The Flow repository is https://github.com/vaadin/flow
  4. If you encounter an issue with Designer, the repository is https://github.com/vaadin/designer
  5. If you encounter an issue with TestBench, the repository is https://github.com/vaadin/testbench
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