XcoreLabelProvider.java

/**
 * Copyright (c) 2011-2012 Eclipse contributors and others.
 * All rights reserved.   This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 */
package org.eclipse.emf.ecore.xcore.ui.labeling;


import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.edit.ui.provider.AdapterFactoryLabelProvider;
import org.eclipse.xtext.naming.IQualifiedNameConverter;
import org.eclipse.xtext.naming.IQualifiedNameProvider;
import org.eclipse.xtext.naming.QualifiedName;
import org.eclipse.xtext.xbase.XBlockExpression;
import org.eclipse.xtext.xbase.ui.labeling.XbaseLabelProvider;

import com.google.inject.Inject;


/**
 * Provides labels for a EObjects.
 *
 * see http://www.eclipse.org/Xtext/documentation/latest/xtext.html#labelProvider
 */
public class XcoreLabelProvider extends XbaseLabelProvider
{
  @Inject
  private IQualifiedNameProvider nameProvider;

  @Inject
  private IQualifiedNameConverter nameConverter;

  @Inject
  public XcoreLabelProvider(AdapterFactoryLabelProvider delegate)
  {
    super(delegate);
  }

  @Override
  protected EStructuralFeature getLabelFeature(EClass eClass)
  {
    // Force to use of the item providers.
    //
    return null;
  }

  @Override
  public String getText(Object element)
  {
    String result = super.getText(element);
    if (result == null && element instanceof EObject)
    {
      QualifiedName name = nameProvider.getFullyQualifiedName((EObject)element);
      if (name != null)
      {
        return nameConverter.toString(name);
      }
      else
      {
        return getDefaultText();
      }

    }
    return result;
  }
  
  @Override
  protected Object doGetText(Object element)
  {
    return super.doGetText(element);
  }

  String text(XBlockExpression xBlockExpression)
  {
    String role = xBlockExpression.eContainmentFeature().getName();
    return role.substring(0, role.length() - 4) + " {}";
  }
  /*
  	//Labels and icons can be computed like this:
  	
  	String text(MyModel ele) {
  	  return "my "+ele.getName();
  	}

      String image(MyModel ele) {
        return "MyModel.gif";
      }
  */
}