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eventszk

ZK How to handle multiple events?

I have textbox and method which listens two events. 

<textbox id="test" />

@Listen("onOK = #test; onBlur = #test")
public void action(Event event) {
  // do something ...
}

When I press Enter on the Textbox, the event "onOK " is triggered. It's OK. But then when I lose focus from the Texbox the event "onBlur" is triggered too. It's bad, because in that case my method "action" is called two times. How can I cancel this second event ?

Solution

  • You could forward any event to another event :

    I created a fiddle where you can test it.

    But some explication :
    In the zul :

    <textbox id="test" forward="onOK=test.onBlur"/>

    What says that the onOK will be forwarded to onBlur, and it will be an onBlur later on.

    In java code :

    @Listen("onBlur = #test")
public void action(Event event) {
    Clients.showNotification(event.getName() + " " + ++counter);
}

    So now we only listen for the onBlur because onOK is forwarded to the onBlur.

    Will this help your case atm, not yet.

    Not calling the event => not possible, if you declare it, it will be triggered.
    But how can you handle your situation :

    Hold the String in your composer, and check it with the new value.
    If it's equal => the event is already triggered, or there are no changes.
    If it's not equal => do your stuff.