Generic Behavior For Multiple TextField

Support
#1

Hi all,

Basically I have some requirements that calculate two fields and store the result in another field.
Example given

In some-ui.xml

 <textField id="sumUnitField" property="propertyA" dataContainer="someDc" />
 <textField id="pricePerUnitField" property="propertyB" dataContainer="someDc""/>

As far as I know, we can create Event Listener for each field and subscribe it to each component

@Subscribe("sumUnitField")
protected void onSumUnitFieldValueChange(HasValue.ValueChangeEvent<Integer> event) {
    if(event.getValue()!=null) {
       doingFunction();
    }
}

@Subscribe("pricePerUnitField")
    protected void onSumUnitFieldValueChange(HasValue.ValueChangeEvent<Integer> event) {
        if(event.getValue()!=null) {
          doingFunction();
        }
    }

But problem arise when I have 30 similar fields that have same behavior (calculate two fields), so in a easy way we can create another 30 similar event listener that call same function.

So my question here is, is there any optimal way how to solve this?

Thank you!

#2

Hi!

If all fields connected to the same data container, the recommended way is to add ItemPropertyChange listener, e.g.:

@Subscribe(id = "visitDc", target = Target.DATA_CONTAINER)
private void onVisitDcItemPropertyChange(InstanceContainer.ItemPropertyChangeEvent<Visit> event) {
    if ("propA".equals(event.getProperty())
            || "prob".equals(event.getProperty())) {
        doingFunction();
    }
}

Gleb

1 Like
#3

Awesome, thanks for your support.
Yes, all fields are on the same container