vaadin | package contains all Vaadin web components | Web Framework library

 by   vaadin JavaScript Version: 10.0.0-alpha14 License: No License

kandi X-RAY | vaadin Summary

kandi X-RAY | vaadin Summary

vaadin is a JavaScript library typically used in Server, Web Framework applications. vaadin has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub, Maven.

This package contains all Vaadin web components (free and commercial). See for more details.

            kandi-support Support

              vaadin has a low active ecosystem.
              It has 530 star(s) with 49 fork(s). There are 33 watchers for this library.
              It had no major release in the last 12 months.
              There are 0 open issues and 17 have been closed. On average issues are closed in 180 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of vaadin is 10.0.0-alpha14

            kandi-Quality Quality

              vaadin has 0 bugs and 0 code smells.

            kandi-Security Security

              vaadin has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              vaadin code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              vaadin does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              vaadin releases are available to install and integrate.
              Deployable package is available in Maven.

            Top functions reviewed by kandi - BETA

            kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of vaadin
            Get all kandi verified functions for this library.

            vaadin Key Features

            No Key Features are available at this moment for vaadin.

            vaadin Examples and Code Snippets

            Missing Vaadin dependencies from org.vaadin.artur
            Lines of Code : 9dot img1License : Strong Copyleft (CC BY-SA 4.0)
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                        Vaadin Directory
            copy iconCopy
            Vaadin: Tabs are displayed in a really bizarre way - is this intended?
            Lines of Code : 80dot img3License : Strong Copyleft (CC BY-SA 4.0)
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            import com.vaadin.flow.component.Component;
            import com.vaadin.flow.component.html.Div;
            import com.vaadin.flow.component.html.Span;
            import com.vaadin.flow.component.tabs.Tab;
            import com.vaadin.fl
            How to show multiline data on Vaadin Grid cell of a column
            Javadot img4Lines of Code : 11dot img4License : Strong Copyleft (CC BY-SA 4.0)
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            // linebreaks wont work like this
            grid.addColumn(item -> "line1 \n line2");
            // try this instead.
            // or probable even better you could use the `Html` component from Vaadin
            grid.addColumn(new ComponentRenderer<>(item -> {
            TypeError : Cannot read property 'initLazy' of undefined?
            Javadot img5Lines of Code : 4dot img5License : Strong Copyleft (CC BY-SA 4.0)
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            Hi! looks like the front-end bundle hasn't updated; 
            after adding the combobox to the view, did you restart the app? 
            Vaadin needs to run mvn Vaadin:prepare-frontend to include the new component.
            copy iconCopy
                            new InstantRenderer <>( Invoice :: getWhenCreated ,
                                            .ofLocalizedDateTime( FormatStyle.SHORT , FormatStyle.MEDI
            Why Doesn't Login Page In Vaadin Show Up When I'm Using Spring Security
            Javadot img7Lines of Code : 30dot img7License : Strong Copyleft (CC BY-SA 4.0)
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             * Allows access to static resources, bypassing Spring security.
            public void configure(WebSecurity web) throws Exception {
                        // Vaadin Flow static resources // 
            Configure Maven pom to access Vaadin 14 alpha/beta pre-release
            Lines of Code : 14dot img8License : Strong Copyleft (CC BY-SA 4.0)
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                    Vaadin Prereleases
                    Vaadin Directory
            Register session to User
            Lines of Code : 153dot img9License : Strong Copyleft (CC BY-SA 4.0)
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            package work.basil.example;
            import java.time.Instant;
            import java.util.Objects;
            public class User
                private String name;
                private Instant whenAuthenticated;
                public User ( String name )
                    Objects.requireNonNull( na
            Background process in Vaadin 8 application
            Lines of Code : 101dot img10License : Strong Copyleft (CC BY-SA 4.0)
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            package com.example.acme;
            import javax.servlet.ServletContextEvent;
            import javax.servlet.ServletContextListener;
            import javax.servlet.annotation.WebListener;
             * @author Basil Bourque
            public class AcmeServletContex

            Community Discussions


            How to Vaadin CallbackDataProvider make an asyncronous fetch data?
            Asked 2022-Mar-18 at 09:43

            Vaadin 14. CallbackDataProvider. When service is slow and answer time is long then Grid connected to CallbackDataProvider is freezes with all UI. Some example:



            Answered 2022-Mar-18 at 09:43

            Vaadin 23:

            In Vaadin 23 there is now a new feature, which allows you to define executor for DataCommunicator to use for asynchronous operation with Grid. If the value is null, DataCommunicator will operate synchronously and this is the default. If executor is defined, the fetch callback is run by executor and Grid is updated using ui.access(..). This requires Push to be enabled.


            Vaadin 14:

            One can attempt to reduce query time with caches. You can either use some generic cache like ehcache, or integrate cache in your data provider. It is application specific which is better for you, global or local cache.

            If the query is still taking that long, then I would propose alternative approach for your UI. Instead of using callback data provider, use Grid with in memory data provider, but do not load whole data to the data provider at once. Instead create a paged view. Query new data when user clicks e.g. "next"/"previous", etc. buttons. And update the UI using UI#access method async when query completes.



            How can I block copy-paste in a text field?
            Asked 2022-Mar-10 at 16:41

            I'm using vaadin 22 and I want to block the copy-paste of an emailField to implement email confirmation. Can someone help me. Thank you



            Answered 2022-Feb-18 at 07:07

            In HTML you want to archive something like this:



            Vaadin anchor - catch deafult click event
            Asked 2022-Feb-27 at 04:54

            I am new to Vaadin framework and I was wondering if there is a way of catching the deafult click event of an Anchor? (Vaadin14, Java only - v11)

            I know i can do this:



            Answered 2021-Jul-26 at 12:50

            Are you actually using the anchor as a link or as a button? If the latter, you could just use a Button and style it as a link.

            Answer to your questions:

            1. the way you did, addEventListener("click", e ->
            2. download.getElement().callFunction("click") (the same as clickInClient)
            3. I don't think it matters for you. All you need is to react to the event and if you need some data, you can use addEventData()

            You could alternatively try to subclass Anchor implementing the ClickNotifier mixin interface which would provide you with the addClickListener() method, also you could then fire this ClickEvent manually, as is done in button's click()



            Web components with vaadin and rollup with svelte: Primary button ignores theme attribute
            Asked 2022-Feb-22 at 21:35

            Maybe someone tried this before and is able to give me a hint. I have used normal svelte setup (mentioned in the main page) which scaffolds the app;

            npx degit sveltejs/template my-svelte-project

            I wanted to use vaadin web components in Svelte. I've installed it;

            npm install @vaadin/vaadin

            the code of main.ts:



            Answered 2022-Feb-22 at 13:27

            You seem to be importing the Material theme version of the Button component. The "primary" theme variant is only available if you use the default Lumo theme. To import that, use import '@vaadin/button';

            For the Material theme, you can use the "outlined" and "contained" theme variants instead:



            Vaadin 19: Using NPM modules with own Vaadin dependencies fails
            Asked 2022-Feb-16 at 11:26

            We are using Vaadin Fusion, and are stuck for the time being with version 19. In this version it is not possible to add an NPM dependency that itself depends on Vaadin components.

            E.g. if I have an app's package.json like this:



            Answered 2021-Aug-17 at 16:23

            Vaadin 19 requires vaadin-button version 2.4.0. Your addon requires the same version so there is no conflict and only one version will be used.

            Vaadin 20.x.x requires vaadin-button version 20.x.x. which is not compatible with your addon.

            The easiest solution is to bump the version of the vaadin-button in your addon to 20:



            vaadin 22 not finding the default route
            Asked 2022-Feb-04 at 21:18

            I have a default route for my vaadin web app. I'm running tomcat 8.5 without springboot.



            Answered 2022-Jan-29 at 05:49

            Your DefaultView doesn't extend a component like Div, VerticalLayout and so on. Without a component a Route can't be shown.



            Problems deploying a Vaadin App to production
            Asked 2022-Jan-27 at 20:20

            I'm working with Java 8 and Vaadin 22. When I want to deploy my starter app to production by



            Answered 2022-Jan-27 at 20:20

            As Simon Martinelli said, running vaadin:dance in the command prompt and moving the folder out of the One Drive scope before mvnw clean package -Pproduction command was the solution to my problem



            Vaadin 14 Grid - How to iterate over all buttons in grid rows
            Asked 2022-Jan-22 at 14:25

            I'm developing an app in Vaadin 14.5.3. I have a Grid in which each row contains, amongst other things, a TextField and two Buttons.

            My requirement is that when the TextField value in any row is changed, all of the buttons in all of the rows need to be disabled.

            Is there a way to iterate over the rows in such a way as to allow me to interact with each button?



            Answered 2022-Jan-22 at 14:25

            If you need to update Grid's rows, the way to do it is to call



            Vaadin-flow non-critical validation that still returns isValid=true
            Asked 2022-Jan-17 at 15:37

            we are currently trying to implement a non-critical validation layer that checks field inputs against certain validators without marking the form as "not valid", but rather as "out of specification" so that we can highlight the fields to the user. In particular we are talking about number ranges with lower and upper boundaries that should highlight the input fields as some sort of "out of specification" warning. The input itself is considered valid but "out of specifaction" while the user should still be able to save the data.

            Here's an example:

            • allowed input of any integer (validation), with an input specification of integers between 90 and 100 (specification).
            • input "abc" -> wrong input type -> error message, saving not allowed
            • input "95.1234" -> wrong input type -> error message, saving not allowed
            • input "85" -> correct input type, valid input, but out of specification -> warning message, saving still allowed
            • input "95" -> correct input type, valid input, in specification -> saving allowed

            This means the normal binder validation should still block the saving while the additional non-critical validation should just highlight it, but not block it.

            We are currently using the vaadin binder in vaadin version 14 and are using the features of converters and validators. Is there a possibility to add our layer to the vaadin binder so that it performs fluently with our current usage? Or do we have to build our own non-critical validation layer additionally to the normal vaadin binder usage? In an ideal world we would pin it after conversion and validation phase:

            1. field input
            2. type conversion
            3. critical validation
            4. non-critical validation
            5. input saving

            I hope my description is sufficient. If there are any questions, just let me know and I try to describe it a little bit more detailed. Thanks in advance.



            Answered 2022-Jan-17 at 15:37

            That's possible with errors that are not of type ErrorLevel.ERROR with a custom BinderValidationErrorHandler available since flow 14.7.

            See the PR that introduced it with an example



            Combobox and suffix slot
            Asked 2022-Jan-14 at 16:03

            I want to add a component to ComboBox's suffix slot. Based on an old Vaadin forum topic you can do it in Vaadin 13, but it doesn't work with Vaadin 22. Is it possible to do this?



            Answered 2022-Jan-05 at 11:03

            There is a better example of setting components to prefix slot of the selected components in Cookbook, which works also with Vaadin 22. The JavaScript method in Forum relies on internal structure of the component that has been changed in Vaadin 22 in order to improve accessibility support.

            You can modify the linked recipe to suffix slot as well, but just note that these components have their own button already in the suffix slot, so in most cases, it is not a good idea from the UX perspective to add additional components there.


            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


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