Widgets are client side things only, so you can't really create them on the server and send them across the wire.
The simplest solution I can think of would be to take the data in the DB that you are reading, package it up all nicely in some kind of data object, and ship it to the client. The client would then inspect the data to figure out what it needs to build. -Ben On Jan 13, 10:48 am, Jack <[email protected]> wrote: > Hi all. > I'm using GWT 2.0 > > In my application I have to render on the browser an html form with a > lot of input widgets such as textfield, checkbox, and so on. > The exact composition of such widgets is stored in a database; in > other words I don't know how the form must look like a-priori, but I > need to build it dynamically based on what's stored in the db. > > I'm trying to follow this approach: the client send and RPC request to > the server side of the application through a method that returns a > VerticalPanel, like this: > > public class MyServiceImpl extends RemoteServiceServlet implements > MyService { > public VerticalPanel getMyForm() { > VerticalPanel pan = new VerticalPanel(); > ... > pan.add( new TextBox(...) ) > ... > return pan; > } > > } > > This approach leads me to this error at compilation-time: > [ERROR] com.google.gwt.user.client.ui.VerticalPanel is not assignable > to 'com.google.gwt.user.client.rpc.IsSerializable' or > 'java.io.Serializable' nor does it have a custom field serializer > (reached via com.google.gwt.user.client.ui.VerticalPanel) > [ERROR] com.google.gwt.user.client.ui.VerticalPanel has no available > instantiable subtypes. (reached via > com.google.gwt.user.client.ui.VerticalPanel) > > How can I workaround this problem, or what approach should I follow ? > Thank you > Jack -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
