package org.argeo.people.ui.providers;
   
   import javax.jcr.Node;
   
   import org.argeo.connect.UserAdminService;
   import org.argeo.connect.ui.util.JcrRowLabelProvider;
   import org.argeo.connect.util.ConnectJcrUtils;
   import org.argeo.connect.util.ConnectUtils;
   import org.argeo.eclipse.ui.EclipseUiUtils;
  import org.argeo.people.PeopleException;
  
  /**
   * Wraps the getText() method of the JcrRowLabelProvider to retrieve a user ID.
   * It retrieves then the corresponding display name using the UserAdminService
   * exposed by the people service and then clean it to remove invalid characters
   * (typically the ampersand).
   */
  public class JcrUserHtmlLabelProvider extends JcrRowLabelProvider {
  	private static final long serialVersionUID = 2134911527741337612L;
  
  	private final UserAdminService userAdminService;
  	private String selectorName;
  	private String propertyName;
  
  	public JcrUserHtmlLabelProvider(UserAdminService userAdminService, String selectorName, String propertyName) {
  		super(propertyName);
  		this.propertyName = propertyName;
  		this.userAdminService = userAdminService;
  		if (EclipseUiUtils.notEmpty(selectorName))
  			this.selectorName = selectorName;
  	}
  
  	public JcrUserHtmlLabelProvider(UserAdminService userAdminService, String propertyName) {
  		super(propertyName);
  		this.userAdminService = userAdminService;
  	}
  
  	@Override
  	public String getText(Object element) {
  		Node currNode = ConnectJcrUtils.getNodeFromElement(element, selectorName);
  		try {
  			String userId = super.getText(currNode);
  			String displayName = null;
  			if (EclipseUiUtils.notEmpty(userId))
  				displayName = userAdminService.getUserDisplayName(userId);
  			if (EclipseUiUtils.isEmpty(displayName))
  				displayName = userId;
  			return ConnectUtils.replaceAmpersand(displayName);
  		} catch (Exception e) {
  			throw new PeopleException("Unable to get display name for prop: " + propertyName + " of " + currNode, e);
  		}
  	}
  }