package org.argeo.cms.e4.users.providers;
   
   import static org.argeo.eclipse.ui.EclipseUiUtils.notEmpty;
   
   import org.argeo.api.NodeConstants;
   import org.argeo.cms.auth.UserAdminUtils;
   import org.argeo.naming.LdapAttrs;
   import org.eclipse.jface.viewers.Viewer;
   import org.eclipse.jface.viewers.ViewerFilter;
  import org.osgi.service.useradmin.User;
  
  /**
   * Filter user list using JFace mechanism on the client (yet on the server) side
   * rather than having the UserAdmin to process the search
   */
  public class UserFilter extends ViewerFilter {
  	private static final long serialVersionUID = 5082509381672880568L;
  
  	private String searchString;
  	private boolean showSystemRole = true;
  
  	private final String[] knownProps = { LdapAttrs.DN, LdapAttrs.cn.name(), LdapAttrs.givenName.name(),
  			LdapAttrs.sn.name(), LdapAttrs.uid.name(), LdapAttrs.description.name(), LdapAttrs.mail.name() };
  
  	public void setSearchText(String s) {
  		// ensure that the value can be used for matching
  		if (notEmpty(s))
  			searchString = ".*" + s.toLowerCase() + ".*";
  		else
  			searchString = ".*";
  	}
  
  	public void setShowSystemRole(boolean showSystemRole) {
  		this.showSystemRole = showSystemRole;
  	}
  
  	@Override
  	public boolean select(Viewer viewer, Object parentElement, Object element) {
  		User user = (User) element;
  		if (!showSystemRole && user.getName().matches(".*(" + NodeConstants.ROLES_BASEDN + ")"))
  			// UserAdminUtils.getProperty(user, LdifName.dn.name())
  			// .toLowerCase().endsWith(AuthConstants.ROLES_BASEDN))
  			return false;
  
  		if (searchString == null || searchString.length() == 0)
  			return true;
  
  		if (user.getName().matches(searchString))
  			return true;
  
  		for (String key : knownProps) {
  			String currVal = UserAdminUtils.getProperty(user, key);
  			if (notEmpty(currVal) && currVal.toLowerCase().matches(searchString))
  				return true;
  		}
  		return false;
  	}
  }