Function ApplyFromXMLElement

Modules/Core/src/IO/mitkIPreferences.cpp:56–102

Helper function that traverses the proference tree based on the passed xml and uses the PropertyApplier.*/

  /** Helper function that traverses the proference tree based on the passed xml and uses the PropertyApplier.*/
  void ApplyFromXMLElement(
    const tinyxml2::XMLElement* xmlElement,
    mitk::IPreferences* targetNode,
    const PropertyApplier& applyProperty,
    bool createNodes,
    const char* operationName)
  {
    const auto* xmlPropertyElement = xmlElement->FirstChildElement("property");

    while (xmlPropertyElement != nullptr)
    {
      const auto* name = xmlPropertyElement->Attribute("name");
      const auto* value = xmlPropertyElement->Attribute("value");

      if (name == nullptr)
        mitkThrow() << "Cannot apply preferences " << operationName << ": missing required attribute 'name' on <property> element.";

      if (value == nullptr)
        mitkThrow() << "Cannot apply preferences " << operationName << ": missing required attribute 'value' on <property> element.";

      applyProperty(targetNode, name, value);

      xmlPropertyElement = xmlPropertyElement->NextSiblingElement("property");
    }

    const auto* xmlChildElement = xmlElement->FirstChildElement("preferences");

    while (xmlChildElement != nullptr)
    {
      const auto* childName = xmlChildElement->Attribute("name");

      if (childName == nullptr)
        mitkThrow() << "Cannot apply preferences " << operationName << ": missing required attribute 'name' on <preferences> element.";

      if (!createNodes)
      {
        const auto childrenNames = targetNode->ChildrenNames();

        if (std::find(childrenNames.begin(), childrenNames.end(), childName) == childrenNames.end())
          mitkThrow() << "Cannot apply preferences " << operationName << ": preferences node \"" << childName << "\" does not exist.";
      }

      ApplyFromXMLElement(xmlChildElement, targetNode->Node(childName), applyProperty, createNodes, operationName);

      xmlChildElement = xmlChildElement->NextSiblingElement("preferences");
    }
  }
}

void mitk::ApplyPreferencesOverrides(const std::string& xmlContent, IPreferences* prefs)