~~NOTRANS~~
~~Title: Custom IFactory Implementation~~

Sometimes you need additional methods in your UI factory, e.g., create custom controls or preconfigure existing controls. 

The UI factory is one of the first classes that is instantiated from a launcher. If you need a custom factory, use an application parameter to configure it.

A custom factory:

<file java CustomSwingFactory.java>
package apps.firstapp;

import javax.rad.genui.UIImage;
import javax.rad.ui.IAlignmentConstants;
import javax.rad.ui.component.IButton;

import com.sibvisions.rad.ui.swing.impl.SwingFactory;

public class CustomSwingFactory extends SwingFactory
{
   public IButton createButton()
   {
      IButton button = super.createButton();
      
      button.setBackground(null);
      button.setHorizontalAlignment(IAlignmentConstants.ALIGN_LEFT);
      button.setImage(UIImage.getImage(UIImage.OK_SMALL));
      button.setBorderOnMouseEntered(true);
      
      return button;
   }
}
</file>

Our factory extends the default SwingFactory and overwrites createButton. All created buttons have a default icon, no border, and the text is left aligned.

Now we configure our custom factory via command-line:

<file script>
java -cp... apps.firstapp.FirstApplication "" Launcher.uifactory=apps.firstapp.CustomSwingFactory
</file>

The second parameter defines a config file, but we don't use one. It is also possible to put the factory parameter in a config file together with other parameters. All configuration options are described in [[jvx:client:gui:application_parameters|this article]].

A preview of an application with our custom factory:

{{:jvx:client:gui:button.png?nolink|}}