Method HandleEvent

Modules/Core/src/Interactions/mitkEventStateMachine.cpp:97–139

}

bool mitk::EventStateMachine::HandleEvent(InteractionEvent *event, DataNode *dataNode)
{
  if (!m_IsActive)
    return false;

  if (!FilterEvents(event, dataNode))
  {
    return false;
  }

  // Get the transition that can be executed
  mitk::StateMachineTransition::Pointer transition = GetExecutableTransition(event);

  // check if the current state holds a transition that works with the given event.
  if (transition.IsNotNull())
  {
    // all conditions are fulfilled so we can continue with the actions
    m_CurrentState = transition->GetNextState();

    // iterate over all actions in this transition and execute them
    const ActionVectorType actions = transition->GetActions();
    for (auto it = actions.cbegin(); it != actions.cend(); ++it)
    {
      try
      {
        ExecuteAction(*it, event);
      }
      catch (const std::exception &e)
      {
        MITK_ERROR << "Unhandled exception caught in ExecuteAction(): " << e.what();
        return false;
      }
      catch (...)
      {
        MITK_ERROR << "Unhandled exception caught in ExecuteAction()";
        return false;
      }
    }

    return true;
  }
  return false;
}

void mitk::EventStateMachine::ConnectActionsAndFunctions()
{