PLMSheetLabelProvider.java

/*
 * (c) 2011 - 2013 University of Mannheim: Software Engineering Group
 */
package de.uni_mannheim.informatik.swt.models.plm.diagram.sheet;

import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart;
import org.eclipse.gmf.runtime.emf.type.core.IElementType;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.jface.viewers.BaseLabelProvider;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.graphics.Image;

/**
 * @generated
 */
public class PLMSheetLabelProvider extends BaseLabelProvider implements
		ILabelProvider {

	/**
	 * @generated
	 */
	public String getText(Object element) {
		element = unwrap(element);
		if (element instanceof de.uni_mannheim.informatik.swt.models.plm.diagram.navigator.PLMNavigatorGroup) {
			return ((de.uni_mannheim.informatik.swt.models.plm.diagram.navigator.PLMNavigatorGroup) element)
					.getGroupName();
		}

		EObject semanticElement = ((IGraphicalEditPart) element)
				.resolveSemanticElement();

		//No Clabject -> Show linguistic type
		if (!(semanticElement instanceof de.uni_mannheim.informatik.swt.models.plm.PLM.Clabject)) {
			IElementType etype = getElementType(getView(element));
			return etype == null ? "" : etype.getDisplayName();
		}

		EList<de.uni_mannheim.informatik.swt.models.plm.PLM.Classification> classifications = ((de.uni_mannheim.informatik.swt.models.plm.PLM.Clabject) semanticElement)
				.getClassificationsAsInstance();

		//No ontological type -> show linguistic type
		if (classifications.size() == 0) {
			IElementType etype = getElementType(getView(element));
			return etype == null ? "" : etype.getDisplayName();
		}

		String typesAsString = "";

		for (de.uni_mannheim.informatik.swt.models.plm.PLM.Classification i : classifications)
			if (i.getType() instanceof de.uni_mannheim.informatik.swt.models.plm.PLM.Entity)
				typesAsString += i.getType().getName()
						+ (classifications.indexOf(i) < classifications.size() - 1 ? ", "
								: "");
			else
				typesAsString += ((de.uni_mannheim.informatik.swt.models.plm.PLM.Connection) i
						.getType()).getHumanReadableName()
						+ (classifications.indexOf(i) < classifications.size() - 1 ? ", "
								: "");

		return typesAsString;
	}

	/**
	 * @generated
	 */
	public Image getImage(Object element) {
		IElementType etype = getElementType(getView(unwrap(element)));
		return etype == null ? null
				: de.uni_mannheim.informatik.swt.models.plm.diagram.providers.PLMElementTypes
						.getImage(etype);
	}

	/**
	 * @generated
	 */
	private Object unwrap(Object element) {
		if (element instanceof IStructuredSelection) {
			return ((IStructuredSelection) element).getFirstElement();
		}
		return element;
	}

	/**
	 * @generated
	 */
	private View getView(Object element) {
		if (element instanceof View) {
			return (View) element;
		}
		if (element instanceof IAdaptable) {
			return (View) ((IAdaptable) element).getAdapter(View.class);
		}
		return null;
	}

	/**
	 * @generated
	 */
	private IElementType getElementType(View view) {
		// For intermediate views climb up the containment hierarchy to find the one associated with an element type.
		while (view != null) {
			int vid = de.uni_mannheim.informatik.swt.models.plm.diagram.part.PLMVisualIDRegistry
					.getVisualID(view);
			IElementType etype = de.uni_mannheim.informatik.swt.models.plm.diagram.providers.PLMElementTypes
					.getElementType(vid);
			if (etype != null) {
				return etype;
			}
			view = view.eContainer() instanceof View ? (View) view.eContainer()
					: null;
		}
		return null;
	}

}