vaadin7

问题 Is it possible to draw html contents in vaadin label? I have texts with <br> contents. Is it available to let the label to use them? 回答1: Yes, you can use the 2 argument constructor of Label and set the ContentMode to HTML . Something like, new Label(YOUR_HTML_TEXT, ContentMode.HTML); From the Javadoc (linked above): Label component for showing non-editable short texts. The label content can be set to the modes specified by ContentMode The contents of the label may contain simple formatting:

问题 I was using setColumnHeader(Object, String) to set a simple string as a column header. I want to create a complex header. I would like to know if there is any way to build a similar table as shown in the below figure in Vaadin 7. http://i.stack.imgur.com/u5dIw.gif 回答1: Now it is possible using Grid: // Group headers by joining the cells HeaderRow groupingHeader = grid.prependHeaderRow(); HeaderCell namesCell = groupingHeader.join( groupingHeader.getCell("firstname"), groupingHeader.getCell(

问题 I am new to vaadin. I have one Link like Link link = new Link("", new ExternalResource(redirectURL)); my requirement is, I have to set value when user clicks the link. Can I add listener when user click the link. Or is there alternate ways of setting value if link is clicked. 回答1: To capture onClick on a link or a label, I always create a HorizontalLayout and put the component inside it: HorizontalLayout hor = new HorizontalLayout(); final Link link = new Link("Click on Me!", new

问题 By using "Spring Stater Project" in Eclipse/STS, I was able to have a Vaadin project up and running quickly. I want to add charting via Vaadin-Addon to the project. I have Googled trying to find how to properly add and use Vaadin Chart addon to the project. But I am confused because there so many "Guides/Tutorial", but a lot are not for spring boot or they are outdated or partial. So I am looking for a complete Guide/Tutorial for Vaadin-SpringBoot-VaadinChart-AddOn. This is what I have so far

问题 i want to use spring in vaadin it's my config: web.xml <context-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/applicationContext.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <listener> <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class> </listener> <servlet> <servlet-name>VaadinApplicationServlet</servlet-name> <servlet

问题 Is it possible to add a buttons in Vaadin 7 to Accordion com.vaadin.ui.TabSheet.Tab caption ? Right now I can only add a String into Tab caption. This is my current screen: I need to add the same Edit/Remove icons(as I have for Live Chat and WMA) near the General and Julia Group tab captions. 回答1: Unfortunately it's not possible. You could create a server-side composition, which behaves like Accordion but then you could design the component so that you can add buttons to tab captions. You

问题 In my Vaadin 7 application I have a heavy view. Server side works pretty fast - all logic in my init() method takes ~100-150ms but rendering in the browsers takes a lot of time(depends on number of components). Right now it is ~10sec in order to display this view in Google Chrome. I'm looking for a way in order to optimize performance of this view. I found LazyLoadWrapper but it looks a little bit outdated. Is any similar to this component for Vaadin 7.6 in order to improve user experience

问题 For example in my ComboBox I want the expense items to be colored in red text and the revenue items to be colored in green text. How can I do this in Vaadin's ComboBox component, assuming I'm working from a BeanItemContainer ? 回答1: It's not possible with the ComboBox without any client-side modifications. It might be possible to develop your own Extension, that would do that. 来源： https://stackoverflow.com/questions/30948344/vaadin-is-it-possible-to-have-different-colors-for-text-items-in

问题 Vaadin 7.6.2 How to apply setStyleName("small") on an Upload component’s upload button and have it work? If this requires custom CSS it would be great to see an example of what that looks like. This question is for the Upload Button, not the "browse" button, which has been hidden by setImmediate(true) in my case. 回答1: Use this scss for the small upload buttons: .v-upload-small .v-button { height: 31px; padding: 0 14px; font-size: 14px; border-radius: 4px; } And on the upload button use the

问题 Vaadin 7.6.2 What would be the CSS that would allow me to change the upload button's color to one of the following: danger , primary or friendly so that I may use setStyleName() in the same way as I do for a Button ? Ref: https://vaadin.com/docs/-/part/framework/components/components-button.html This Doc doesn't discuss the bug or fix: https://vaadin.com/docs/-/part/framework/components/components-upload.html But does say: The upload button has the same structure and style as a regular Button