package at.gv.egovernment.moa.ss.erechtclient.moainvoker;

import java.util.Iterator;
import java.util.LinkedList;

import org.apache.log4j.Logger;
import org.w3c.dom.DOMError;

import at.gv.egovernment.moa.ss.erechtclient.init.Constants;

public class DOMErrorHandler implements org.w3c.dom.DOMErrorHandler
{
  private LinkedList errors_;

  private static Logger logger_ = Logger.getLogger(Constants.LH_MOAINVOKER_);

  public DOMErrorHandler()
  {
    errors_ = new LinkedList();
  }
  public boolean handleError(DOMError error) 
  {
    if (error.getSeverity() == DOMError.SEVERITY_WARNING)
    {
      logger_.warn("A warning occured while parsing: " + error.getMessage());
      return true;
    }
    else
    {
      logger_.error("A (fatal) error occured while parsing: " + error.getMessage());
      errors_.add(error.getMessage());
      return false;
    }
  }
  
  public int getErrorCount()
  {
    return errors_.size();
  }
  
  public String getErrorSummaryMsg()
  {
    if (errors_.size() <= 0) return null;
    
    StringBuffer errorSummaryMsg = new StringBuffer();
    errorSummaryMsg.append("The following errors have been reported during parsing:\n");
    for (int i = 0; i < errors_.size(); i++)
    {
      errorSummaryMsg.append("Error no. " + i + ":\n");
      errorSummaryMsg.append(errors_.get(i) + "\n");
    }
    return errorSummaryMsg.toString();
  }

}