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Application.h

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#if !defined(Application_h)
#define Application_h

#include <sys/types.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/un.h>

#include <iostream>
#include <fstream>
#include <QString>
#include <string>
#include <ctime>
#include "Pvl.h"
#include "UserInterface.h"

namespace Isis {
  class Gui;
  class Progress;

  class Application {
    public:
      Application (int argc, char *argv[]);
      ~Application ();

      int Exec(void (*funct)());
      PvlGroup Accounting();
      PvlObject History();

      static UserInterface &GetUserInterface();
      static void Log(PvlGroup &results);
      static void GuiLog(Pvl &results);
      static void GuiLog(PvlGroup &results);
      static void GuiLog(std::string &results);
      static std::string Name();

      void RegisterGuiHelpers(std::map<std::string,void*> helpers){ p_guiHelpers = helpers; };
      void* GetGuiHelper(std::string helper) { return p_guiHelpers[helper];};

      void GuiReportError(Isis::iException &e);

      void Exec(const std::string &program, const std::string &parameters);

      static std::string UserName();
      static std::string HostName();
      static std::string DateTime(time_t *curtime=0);
      
    private:
      int p_BatchlistPass;
      int DirectIO();
      int PageFaults();
      int ProcessSwaps();

      time_t p_startTime;
      clock_t p_startClock;
      std::string p_datetime;
      int p_startDirectIO;
      int p_startPageFaults;
      int p_startProcessSwaps;

      UserInterface *p_ui;  

      static bool HasParent ();
      static void SendParentData (const std::string code, const std::string &message);
      void SendParentErrors (Isis::PvlObject &errors);

      friend class Gui;
      void FunctionCleanup();
      int FunctionError(Isis::iException &e);

      friend class Progress;
      void UpdateProgress(const std::string &text, bool print);
      void UpdateProgress(int percent, bool print);
      void ProcessGuiEvents ();

      void ParentFork(const std::string &command, const std::string &program);
      void ChildFork(const std::string &command);
      void EstablishConnections();
      void WaitForCommand (int childSocket);

      int p_socket;
      static int p_childSocket;
      pid_t p_pid;
      std::string p_buffer;
      std::string p_socketFile;
      struct sockaddr_un p_socketName;
      std::vector<std::string> p_queue;
      std::map<std::string,void*> p_guiHelpers;

      static QString p_appName;
  };

  extern Application *iApp;
};

#endif