Is it possible to create javascript elements like OpenStreetMap
or jQuery
inside a vaadin application?
Because vaadin
websites are created by programming in java and letting the compiler autocreate the DOM
and JavaScript
out of it?
So, is it possible at all?
You can create such an integration with AbstractJavaScriptComponent
The basic idea here is to subclass this class, annotate with @JavaScript
to pull in the needed JS libs. Then write at least a global function, that sets up your lib in the DOM (you will have a <div>
at your disposal). Your component can hold state, the server side can call defined functions on the client (while sending eg state) and the client can call server functions (params passed as JSON).
There are some easy and cheap solutions which are not the best in the long term, but they may be enough:
1)
If you just want to render some html you cant insert it as the value of a label and change its Content Mode to html.
https://vaadin.com/book/-/page/components.label.html
2)
If you just want to execute some javascript code after a ui event you can call Javascript.getCurrent().execute(javascriptCode).
https://vaadin.com/book/vaadin7/-/page/advanced.javascript.html
Notice that if you are trying to do some re-usable components, this is not the right answer
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