vaadin

In Vaadin Flow (versions 10 and later), is there some way to dynamically change the font, font size, font color and such of the widgets in a Vaadin layout? I do know the basics of CSS , but don’t know much about SASS or other supersets of CSS though I am willing to learn. And I do not know what supersets of CSS are being used by Vaadin Flow. I know I can dynamically assign or remove CSS style names to a widget at runtime. But that means the CSS style must already be defined. ➥Is there some way to assign arbitrary font styling at runtime? The short answer is yes. And this is one of the major

I was able to integrate a Vaadin module into our Spring based application. After integration I wanted to run a demo of gantt-charts which is an add-on for Vaadin and found it on github here . Inside the folder, there is a demo project. All is fine, except I am having a problem with widgetsets. Screenshot of the problem : Also I get a non-serializable error : Nov 18, 2015 3:16:48 PM org.apache.catalina.session.StandardManager startInternal SEVERE: Exception loading sessions from persistent storage java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: com.journaldev

I want add column to grid, when i click to button ("backBtn"). Then i get the value from the textfield ("filterText"), and that will be the name of the new column. Who can help me? The code is from tutorial, but i need add the new feature here. Thanks ! You can find my code in attachment. Grid is in class "MyUI" This is clas Customer package my.vaadin.app; import java.io.Serializable; import java.time.LocalDate; import java.util.Date; /** * A entity object, like in any other Java application. In a typical real world * application this could for example be a JPA entity. */ @SuppressWarnings(

I have a vaadin and servlet error when i try to load the servlet in the browser by localhost/testVaadin/ I want to execute this sample to see how vaadin works, because I have to implemnt an BPMN with activity explorer, which is using vaadin as a UI framework. I attached the code, and web.xml plus the thrown exception. package com.example.testvaadin; import com.vaadin.Application; import com.vaadin.data.Property; import com.vaadin.data.Property.ValueChangeEvent; import com.vaadin.data.util.IndexedContainer; import com.vaadin.ui.Button; import com.vaadin.ui.Button.ClickEvent; import com.vaadin

I am very new to Vaadin. My requirement is like in my page I need to have 4 input component per row. There would be 4 rows like this. I need a layout which will allow me to define number of columns and keep align it. There should not be any border like we have in table. Please suggest me any suitable layout and how can I customize that. Thanks You are probably looking for a GridLayout , it provides enough flexibility to size your grid 'cells', maintain consistency and set expand ratios for row and columns separately. The other option for you is to use a CustomComponent and in case you are