TaggedValueHelperImpl.java

package org.eclipse.uml2.diagram.common.internal.stereo;

import org.eclipse.emf.common.notify.Adapter;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.uml2.diagram.common.stereo.TaggedValueHelper;
import org.eclipse.uml2.diagram.common.stereo.TaggedValueListener;
import org.eclipse.uml2.uml.Element;
import org.eclipse.uml2.uml.Stereotype;

public class TaggedValueHelperImpl implements TaggedValueHelper {

	private final Element myExistingStereotypedElement;

	private final EObject myRawReference;

	private final Stereotype myStereo;

	public TaggedValueHelperImpl(Element existingStereotypedElement, Stereotype stereo) {
		myExistingStereotypedElement = existingStereotypedElement;
		myStereo = stereo;
		myRawReference = existingStereotypedElement.getStereotypeApplication(stereo);
	}

	public void addTaggedValueListener(TaggedValueListener listener) {
		myRawReference.eAdapters().add(new StereotypeApplicationTaggedValueAdapter(listener));
	}

	public void removeTaggedValueListener(TaggedValueListener l) {
		StereotypeApplicationTaggedValueAdapter forListener = null;
		for (Adapter next : myRawReference.eAdapters()) {
			if (next instanceof StereotypeApplicationTaggedValueAdapter && ((StereotypeApplicationTaggedValueAdapter) next).isForListener(l)) {
				forListener = (StereotypeApplicationTaggedValueAdapter) next;
				break;
			}
		}
		if (forListener != null) {
			myRawReference.eAdapters().remove(forListener);
		}
	}

	public Stereotype getStereotype() {
		return myStereo;
	}

	public Element getStereotypeOwner() {
		return myExistingStereotypedElement;
	}

	public boolean isAlive() {
		return myRawReference != null;
	}

};