FileCmdFactory.cpp

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/******************************************************************************************************
 * (C) 2014 markummitchell@github.com. This file is part of Engauge Digitizer, which is released      *
 * under GNU General Public License version 2 (GPLv2) or (at your option) any later version. See file *
 * LICENSE or go to gnu.org/licenses for details. Distribution requires prior written permission.     *
 ******************************************************************************************************/
 
#include "EngaugeAssert.h"
#include "FileCmdClose.h"
#include "FileCmdExport.h"
#include "FileCmdImport.h"
#include "FileCmdOpen.h"
#include "FileCmdFactory.h"
#include "FileCmdSerialize.h"
#include <QXmlStreamReader>
#include "Xml.h"
 
FileCmdFactory::FileCmdFactory()
{
}
 
FileCmdFactory::~FileCmdFactory()
{
}
 
FileCmdAbstract *FileCmdFactory::createFileCmd (QXmlStreamReader &reader) const
{
  FileCmdAbstract *cmd = nullptr;
 
  QXmlStreamAttributes attributes = reader.attributes();
  if (!attributes.hasAttribute (FILE_CMD_SERIALIZE_CMD_TYPE)) {
    xmlExitWithError (reader,
                      QString ("Missing attribute %1").arg (FILE_CMD_SERIALIZE_CMD_TYPE));
  }
 
  // Get common attributes
  QString cmdType = attributes.value (FILE_CMD_SERIALIZE_CMD_TYPE).toString();
 
  if (cmdType == FILE_CMD_SERIALIZE_CMD_FILE_CLOSE) {
    cmd = new FileCmdClose (reader);
  } else if (cmdType == FILE_CMD_SERIALIZE_CMD_FILE_EXPORT) {
    cmd = new FileCmdExport (reader);
  } else if (cmdType == FILE_CMD_SERIALIZE_CMD_FILE_IMPORT) {
    cmd = new FileCmdImport (reader);
  } else if (cmdType == FILE_CMD_SERIALIZE_CMD_FILE_OPEN) {
    cmd = new FileCmdOpen (reader);
  } else {
 
    // Invalid xml
    ENGAUGE_ASSERT (false);
 
  }
 
  return cmd;
}