TwinColGrid Add-on for Vaadin

TwinColGrid Add-on is a UI component add-on for Vaadin Framework version 14+

Features

TwinColGrid is built upon the same idea of TwinColSelect component, but using grids instead of selects. It provides a multiple selection component that shows two grids side by side. Left grid contains unselected items and the right grid the selected items. The user can select items from the list on the left and click on the ">" button to move them to the list on the right. Items can be deselected by selecting them in the right list and clicking on the "<" button. Component also supports drag and drop between grids.

Online demo

Try the add-on demo at http://addonsv24.flowingcode.com/twincolgrid

Download release

Official releases are available at Vaadin Directory https://vaadin.com/directory/component/twincolgrid-add-on

Maven install

Add the following dependencies in your pom.xml file:

<dependency>
   <groupId>com.flowingcode.vaadin.addons</groupId>
   <artifactId>twincolgrid</artifactId>
   <version>X.Y.Z</version>
</dependency>

For SNAPSHOT versions see here.

Building and running demo

git clone https://github.com/FlowingCode/TwinColGrid
mvn clean install
mvn jetty:run

To see the demo, navigate to http://localhost:8080/

Release notes

• Version 2.0.0 First release for Vaadin 14+ NPM mode. Several API improvements
• Version 1.0.0 First release of the component. This version has dependencies that are not available in the public repositories.
• Version 1.0.1 First stable release. Compatible with Vaadin 8.1/8.2.
• Version 1.0.2 Compatible with Vaadin 8.3 and later. Support for Vaadin Designer. Read-only mode.

Roadmap

This component is developed as a hobby with no public roadmap or any guarantees of upcoming releases.

Issue tracking

The issues for this add-on are tracked on its github.com page. All bug reports and feature requests are appreciated.

Contributions

Contributions are welcome. There are two primary ways you can contribute: by reporting issues or by submitting code changes through pull requests. To ensure a smooth and effective process for everyone, please follow the guidelines below for the type of contribution you are making.

1. Reporting Bugs and Requesting Features

Creating an issue is a highly valuable contribution. If you've found a bug or have an idea for a new feature, this is the place to start.

• Before creating an issue, please check the existing issues to see if your topic is already being discussed.
• If not, create a new issue, choosing the right option: "Bug Report" or "Feature Request". Try to keep the scope minimal but as detailed as possible.

A Note on Bug Reports

Please complete all the requested fields to the best of your ability. Each piece of information, like the environment versions and a clear description, helps us understand the context of the issue.

While all details are important, the minimal, reproducible example is the most critical part of your report. It's essential because it removes ambiguity and allows our team to observe the problem firsthand, exactly as you are experiencing it.

2. Contributing Code via Pull Requests

As a first step, please refer to our Development Conventions page to find information about Conventional Commits & Code Style requirements.

Then, follow these steps for creating a contribution:

• Fork this project.
• Create an issue to this project about the contribution (bug or feature) if there is no such issue about it already. Try to keep the scope minimal.
• Develop and test the fix or functionality carefully. Only include minimum amount of code needed to fix the issue.
• For commit message, use Conventional Commits to describe your change.
• Send a pull request for the original project.
• Comment on the original issue that you have implemented a fix for it.

License & Author

This add-on is distributed under Apache License 2.0. For license terms, see LICENSE.txt.

TwinColGrid Add-on is written by Flowing Code S.A.

Special configuration when using Spring

By default, Vaadin Flow only includes com/vaadin/flow/component to be always scanned for UI components and views. For this reason, the add-on might need to be allowed in order to display correctly.

To do so, just add com.flowingcode to the vaadin.allowed-packages property in src/main/resources/application.properties, like:

vaadin.allowed-packages = com.vaadin,org.vaadin,dev.hilla,com.flowingcode

More information on Spring scanning configuration here.