EDIT

/**

 */

package eu.etaxonomy.taxeditor.editor.view.descriptive.handler;

 * @version $Id: $

 */

public class DescriptionsMenuPropertyTester extends PropertyTester {

	private static final String MEDIA = "isMedia";

	private static final String FEATURE_NODE_CONTAINER = "isFeatureNodeContainer";

	private static final String DESCRIPTION = "isDescription";

	private static final String DESCRIPTION_ELEMENT = "isDescriptionElement";

	private static final String DELETABLE = "isDeletable";

	private static final String IMAGE_GALLERY = "isImageGallery";

	/* (non-Javadoc)

	 * @see org.eclipse.core.expressions.IPropertyTester#test(java.lang.Object, java.lang.String, java.lang.Object[], java.lang.Object)

	 */

	/** {@inheritDoc} */

			Object expectedValue) {

		Object[] selectedElements = ((IStructuredSelection) receiver).toArray();

		if(selectedElements.length == 0){

			// nothing selected so all tests should fail

			return false;

		}

		if(MEDIA.equals(property)){

			return isMedia(selectedElements);

		}

			return false;

		}

	}

	private boolean isImageGallery(Object[] selectedElements) {

			if(!(object instanceof DescriptionBase) || !((DescriptionBase) object).isImageGallery()){

				return false;

			}

	private boolean isDeletable(Object[] selectedElements) {

		boolean result = false;

		for (Object object : selectedElements) {

			if((object instanceof DescriptionBase)

				|| (object instanceof DescriptionElementBase)

				|| (object instanceof Media)

			}else{

				return false;

			}

		}

		return result;

	}