package org.argeo.eclipse.ui.jcr;
   
   import javax.jcr.Node;
   import javax.jcr.Property;
   import javax.jcr.RepositoryException;
   import javax.jcr.version.Version;
   
   import org.eclipse.jface.viewers.ColumnLabelProvider;
   import org.eclipse.swt.graphics.Image;
  
  /** Simplifies writing JCR-based column label provider. */
  public class VersionColumnLabelProvider extends ColumnLabelProvider {
  	private static final long serialVersionUID = -6117690082313161159L;
  
  	protected String getVersionText(Version version) throws RepositoryException {
  		return super.getText(version);
  	}
  
  	protected String getVersionToolTipText(Version version) throws RepositoryException {
  		return super.getToolTipText(version);
  	}
  
  	protected Image getVersionImage(Version version) throws RepositoryException {
  		return super.getImage(version);
  	}
  
  	protected String getUserName(Version version) throws RepositoryException {
  		Node node = version.getFrozenNode();
  		if(node.hasProperty(Property.JCR_LAST_MODIFIED_BY))
  			return node.getProperty(Property.JCR_LAST_MODIFIED_BY).getString();
  		if(node.hasProperty(Property.JCR_CREATED_BY))
  			return node.getProperty(Property.JCR_CREATED_BY).getString();
  		return null;
  	}
  	
  //	protected String getActivityTitle(Version version) throws RepositoryException {
  //		Node activity = getActivity(version);
  //		if (activity == null)
  //			return null;
  //		if (activity.hasProperty("jcr:activityTitle"))
  //			return activity.getProperty("jcr:activityTitle").getString();
  //		else
  //			return activity.getName();
  //	}
  //
  //	protected Node getActivity(Version version) throws RepositoryException {
  //		if (version.hasProperty(Property.JCR_ACTIVITY)) {
  //			return version.getProperty(Property.JCR_ACTIVITY).getNode();
  //		} else
  //			return null;
  //	}
  
  	@Override
  	public String getText(Object element) {
  		try {
  			return getVersionText((Version) element);
  		} catch (RepositoryException e) {
  			throw new RuntimeException("Runtime repository exception when accessing " + element, e);
  		}
  	}
  
  	@Override
  	public Image getImage(Object element) {
  		try {
  			return getVersionImage((Version) element);
  		} catch (RepositoryException e) {
  			throw new RuntimeException("Runtime repository exception when accessing " + element, e);
  		}
  	}
  
  	@Override
  	public String getToolTipText(Object element) {
  		try {
  			return getVersionToolTipText((Version) element);
  		} catch (RepositoryException e) {
  			throw new RuntimeException("Runtime repository exception when accessing " + element, e);
  		}
  	}
  
  }