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Listen for changes of the checked state in the embedded table of an AbstractTableField [message #1042295]

Tue, 16 April 2013 08:32

Fredrik Möller

Messages: 15
Registered: April 2013

Junior Member

Hello

In my form class that extends AbstractForm there is a field of type AbstractTableField. The embedded table of this field has the property "Checkable" selected.

In my form i would like to be able to listen for changes of the checked state of the rows in the embedded table (to be able to activate or deactivate the save form button of the form).

I have tried the following:

@Override
  protected void execInitForm() throws ProcessingException {
    
    // For every field...
    for (IFormField field : getAllFields()) {
      field.addPropertyChangeListener("value", validationListener);
      field.addPropertyChangeListener("empty", validationListener);
    }

    // PropertyChangeListener for the activation of the Ok Button
       addPropertyChangeListener("saveNeeded", new PropertyChangeListener() {
      @Override
      public void propertyChange(PropertyChangeEvent event) {
        if (event.getNewValue().equals(false)) {
          getOkButton().setEnabledGranted(false);
        }
        else {
          getOkButton().setEnabledPermission(new UpdateStammdatenBibPermission());
        }
      }
    });
  }

My problem is that it does not seem to be any events fired when the checkboxes are selected or deselected in the embedded table.

BR
Fredrik Möller

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Re: Listen for changes of the checked state in the embedded table of an AbstractTableField [message #1042737 is a reply to message #1042295]

Tue, 16 April 2013 20:22

Jeremie Bresson

Messages: 1252
Registered: October 2011

Senior Member

Hi,

Thanks for your question.

I look at the code and figured out that the number of checked rows is not considered when the table field computes if it contains modifications or not.

To add this behavior, you can override execIsSaveNeeded() in your table field:

@Override
protected boolean execIsSaveNeeded() throws ProcessingException {
  boolean b = super.execIsSaveNeeded();
  if (b == false && getTable().getCheckedRows().length > 0) {
    b = true;
  }
  return b;
}

In my opinion this can be explained: per default, eclipse scout does not consider checked rows in table for "IsSaveNeeded", because from a persistence point of view this "checked/not checked" state is not relevant. It is not transferred to the FormData.

You need to do something with the "checked/not checked" information by yourself (it is your business logic). Therefore you also need to implement how your TableField should react with this information.

[Updated on: Tue, 16 April 2013 20:24]

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