How to use in a plugin

Scala

import java.awt.event.ActionEvent

import com.samihus.magicdraw.wrapper.WCaster
import com.samihus.magicdraw.wrapper.api.scalaapi.{WClass, WDefaultBrowserAction}

class ScalaExample() extends WDefaultBrowserAction(actionName= "Name of the action") {
  override def actionPerformed(actionEvent: ActionEvent): Unit = {
    val mayBeWClass: Option[WClass] = getSelectedObjectAsBaseElement.flatMap(WCaster.toMayBeWClass)
  }
}

Java

import com.nomagic.magicdraw.ui.browser.actions.DefaultBrowserAction;
import com.nomagic.magicdraw.uml.BaseElement;
import com.samihus.magicdraw.wrapper.api.javaapi.JCaster;
import com.samihus.magicdraw.wrapper.api.javaapi.JClass;

import javax.swing.*;
import java.awt.event.ActionEvent;
import java.util.Optional;

public class Example extends DefaultBrowserAction {
    public Example(String actionID, String actionName, KeyStroke stroke, String group) {
        super(actionID, actionName, stroke, group);
    }

    @Override
    public void actionPerformed(ActionEvent evt) {
        final Optional<BaseElement> selectedObject = Optional.ofNullable((BaseElement) getSelectedObject());
        final Optional<JClass> jClass = selectedObject.flatMap(JCaster::toMayBeJClass);
    }
}