Example usage for com.vaadin.event MethodEventSource addListener

Introduction

In this page you can find the example usage for com.vaadin.event MethodEventSource addListener.

Prototype

public Registration addListener(Class<?> eventType, Object object, String methodName);

Source Link

Document

Registers a new listener with the specified activation method to listen events generated by this component.

Usage

From source file:org.lunifera.runtime.web.vaadin.databinding.component.internal.ComponentListenerUtil.java

License:Open Source License

/**
 * @param widget/* w ww .j  a v a 2s .co  m*/
 * @param event
 * @param listener
 */
public static void asyncAddListener(final MethodEventSource widget,
        final Class<? extends Component.Event> event, final Component.Listener listener,
        Method listenerMethod) {
    if (widget == null) {
        return;
    }

    UI ui = UI.getCurrent();
    if (ui != null) {
        widget.addListener(event, listener, listenerMethod);
    } else {
        throw new IllegalStateException("Not a valid web transaction");
    }
}

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