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JavaScriptPlus for Vaadin

JavaScript Plus for vaadin

JavaScript Plus for vaadin provides an extended version of vaadin's AbstractJavaScriptComponent that is capable of deferred variable changes. Deferred variable change means: a value is not transferred to the server immediately, but instead waits until the next non-deferred action (like a button click) occurs. Then, the value is synced with the servers. Fields (like TextFields) with immediate=false use this.

Deferred variable change has some advantages:

• the application has a better responsiveness
• network bandwith and server resources are used economically

Up to now, these advantages were not available in JavaScript. With JavaScript Plus for vaadin, this is about to change.

Sample code

connector.setDeferredVariable("varname", somevalue);

@Override
protected void onChangeVariables(Map<String, Object> variables) {
    Object value = variables.get("varname");
    // do something with value
}

@VaadinServletConfiguration(ui = yourui.class, widgetset = "de.akquinet.engineering.vaadin.javascriptplus.JavaScriptPlusForVaadin")

Links

• Author Homepage
• Source Code

Compatibility