CODEWITHSUNDEEP
javavaadin
Andreas Johansson
Andreas Johansson

Reputation: 1145

Vaadin - Get the currently shown Notification from a Window

Is it possible to somehow get the currently shown Notification from a given window in Vaadin? Looking at the Window API, all I can see is a couple of showWindow() methods.

So, does anyone know if there exist some functionality for getting the currently shown Notification (if there is any Notification present, that is)?

Upvotes: 2

Views: 1253

Answers (2)

LePirlouit
LePirlouit

Reputation: 501

By reflection :

private boolean isNotified(String notif) throws SecurityException, NoSuchFieldException,
IllegalArgumentException, IllegalAccessException {
    Page current = Page.getCurrent();

    Field f = current.getClass().getDeclaredField("notifications");
    f.setAccessible(true);
    List<Notification> notifications = (List<Notification>) f.get(current);
    boolean found = false;
    if (notifications != null) {
        for (Notification notification : notifications) {
            if (notification.getCaption() == notif) {
                found=true;
            }
        }
    }
    return found;
}

Upvotes: 1

Charles Anthony
Charles Anthony

Reputation: 3155

I do not believe there is currently any way to do this.

You could override Window#showNotification(Notification) to keep track of this yourself, but as far as I can see, the client doesn't tell the server that the notification has been closed => there's no way of "resetting" this flag.

(the private method Window#addNotification keeps track of the notifications to send to the browser in a linked list, but Window#paintContent(PaintTarget) clears that list as soon as they are sent to the browser)

Upvotes: 3

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