Hello everyone.
I’m developing Vaadin portlet with Liferay and I ran into a problem I can’t resolve. What I need is to execute specific JavaScript code on a client and fetch the result into the portlet. Due to the fact that Window.executeJavaScript() won’t return any value, I think I have to call Java method from within JavaScript code.
The pseudocode below is to illustrate what I’m talking about.
public class VaadinWidget extends Application {
public void init() {
...
window.exectureJavaScript(
"var param = 14; " +
"// call updateWindow(param)";
}
public void updateWindow(int value) {
// do something with the value
}
}