/*=========================================================================

  Program:   ParaView
  Module:    vtkPVApplication.cxx

  Copyright (c) Kitware, Inc.
  All rights reserved.
  See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#include "vtkPVApplication.h"

#include "vtkPVDemoPaths.h"
#include "vtkToolkits.h"
#include "vtkPVConfig.h"
#ifdef VTK_USE_MPI
#include "vtkMPIController.h"
#include "vtkMPICommunicator.h"
#include "vtkMPIGroup.h"
#endif

#include "vtkCallbackCommand.h"
#include "vtkCellData.h"
#include "vtkCharArray.h"
#include "vtkCollectionIterator.h"
#include "vtkDataSet.h"
#include "vtkDataSetAttributes.h"
#include "vtkDataSetAttributes.h"
#include "vtkDirectory.h"
#include "vtkDoubleArray.h"
#include "vtkFloatArray.h"
#include "vtkInstantiator.h"
#include "vtkIntArray.h"
#include "vtkKWApplicationSettingsInterface.h"
#include "vtkKWDialog.h"
#include "vtkKWEvent.h"
#include "vtkKWLabeledFrame.h"
#include "vtkKWLoadSaveDialog.h"
#include "vtkKWSplashScreen.h"
#include "vtkKWWindowCollection.h"
#include "vtkLongArray.h"
#include "vtkMapper.h"
#include "vtkMultiProcessController.h"
#include "vtkObjectFactory.h"
#include "vtkOutputWindow.h"
#include "vtkPVApplicationSettingsInterface.h"
#include "vtkPVClientServerModule.h"
#include "vtkPVConfig.h"
#include "vtkPVData.h"
#include "vtkPVHelpPaths.h"
#include "vtkPVProcessModule.h"
#include "vtkPVRenderModule.h"
#include "vtkPVRenderView.h"
#include "vtkPVSource.h"
#include "vtkPVSourceCollection.h"
#include "vtkPVSourceInterfaceDirectories.h"
#include "vtkPVTraceFileDialog.h"
#include "vtkPVWindow.h"
#include "vtkPointData.h"
#include "vtkPolyData.h"
#include "vtkPolyDataMapper.h"
#include "vtkProbeFilter.h"
#include "vtkRenderWindow.h"
#include "vtkRenderer.h"
#include "vtkShortArray.h"
#include "vtkString.h"
#include "vtkTclUtil.h"
#include "vtkTimerLog.h"
#include "vtkUnsignedCharArray.h"
#include "vtkUnsignedIntArray.h"
#include "vtkUnsignedLongArray.h"
#include "vtkUnsignedShortArray.h"
#include "vtkClientServerStream.h"
#include "vtkClientServerInterpreter.h"
#include "vtkGraphicsFactory.h"
#include "vtkImagingFactory.h"

// #include "vtkPVRenderGroupDialog.h"

#include <sys/stat.h>
#include <stdarg.h>
#include <signal.h>

#include "vtkKWDirectoryUtilities.h"

#ifdef _WIN32
#include "vtkKWRegisteryUtilities.h"

#include "ParaViewRC.h"

#include "htmlhelp.h"
#include "direct.h"
#endif

#include <vtkstd/vector>
#include <vtkstd/string>

//----------------------------------------------------------------------------
vtkStandardNewMacro(vtkPVApplication);
vtkCxxRevisionMacro(vtkPVApplication, "1.247");
vtkCxxSetObjectMacro(vtkPVApplication, RenderModule, vtkPVRenderModule);


int vtkPVApplicationCommand(ClientData cd, Tcl_Interp *interp,
                            int argc, char *argv[]);




//----------------------------------------------------------------------------
void vtkPVApplication::SetProcessModule(vtkPVProcessModule *pm)
{
  this->ProcessModule = pm;
}

//----------------------------------------------------------------------------
extern "C" int Vtktkrenderwidget_Init(Tcl_Interp *interp);
extern "C" int Vtkkwparaviewtcl_Init(Tcl_Interp *interp);
extern "C" int Vtkpvfilterstcl_Init(Tcl_Interp *interp);
#if defined(PARAVIEW_BUILD_DEVELOPMENT) && defined(PARAVIEW_BLT_LIBRARY)
extern "C" int Blt_Init(Tcl_Interp *interp);
#endif

#ifdef PARAVIEW_BUILD_DEVELOPMENT
extern "C" int Vtkpvdevelopmenttcl_Init(Tcl_Interp *interp);
#endif

#ifdef PARAVIEW_LINK_XDMF
extern "C" int Vtkxdmftcl_Init(Tcl_Interp *interp);
#endif

vtkPVApplication* vtkPVApplication::MainApplication = 0;

static void vtkPVAppProcessMessage(vtkObject* vtkNotUsed(object),
                                   unsigned long vtkNotUsed(event), 
                                   void *clientdata, void *calldata)
{
  vtkPVApplication *self = static_cast<vtkPVApplication*>( clientdata );
  const char* message = static_cast<char*>( calldata );
  cout << "# Error or warning: " << message << endl;
  self->AddTraceEntry("# Error or warning:");
  int cc;
  ostrstream str;
  for ( cc= 0; cc < vtkString::Length(message); cc ++ )
    {
    str << message[cc];
    if ( message[cc] == '\n' )
      {
      str << "# ";
      }
    }
  str << ends;
  self->AddTraceEntry("# %s\n#", str.str());
  //cout << "# " << str.str() << endl;
  str.rdbuf()->freeze(0);
}

// initialze the class variables
int vtkPVApplication::GlobalLODFlag = 0;

// Output window which prints out the process id
// with the error or warning messages
class VTK_EXPORT vtkPVOutputWindow : public vtkOutputWindow
{
public:
  vtkTypeMacro(vtkPVOutputWindow,vtkOutputWindow);
  
  static vtkPVOutputWindow* New();

  void DisplayText(const char* t)
  {
    if ( this->Windows && this->Windows->GetNumberOfItems() &&
         this->Windows->GetLastKWWindow() )
      {
      vtkKWWindow *win = this->Windows->GetLastKWWindow();
      char buffer[4096];      
      const char *message = strstr(t, "): ");
      char type[1024], file[1024];
      int line;
      sscanf(t, "%[^:]: In %[^,], line %d", type, file, &line);
      if ( message )
        {
        int error = 0;
        if ( !strncmp(t, "ERROR", 5) )
          {
          error = 1;
          }
        message += 3;
        char *rmessage = vtkString::Duplicate(message);
        int last = vtkString::Length(rmessage)-1;
        while ( last > 0 && 
                (rmessage[last] == ' ' || rmessage[last] == '\n' || 
                 rmessage[last] == '\r' || rmessage[last] == '\t') )
          {
          rmessage[last] = 0;
          last--;
          }
        sprintf(buffer, "There was a VTK %s in file: %s (%d)\n %s", 
                (error ? "Error" : "Warning"),
                file, line,
                rmessage);
        if ( error )
          {
          win->ErrorMessage(buffer);
          if ( this->TestErrors )
            {
            this->ErrorOccurred = 1;
            }
          }
        else 
          {
          win->WarningMessage(buffer);
          }
        delete [] rmessage;
        }
      }
    else
      {
      this->Errors.push_back(t);
      }
  }
  
  vtkPVOutputWindow()
  {
    this->Windows = 0;
    this->ErrorOccurred = 0;
    this->TestErrors = 1;
  }

  ~vtkPVOutputWindow()
    {
    if ( this->Errors.size() > 0 )
      {
      cout << "Errors while exiting ParaView:" << endl;
      }
#ifdef WIN32
    ostrstream str;
    this->FlushErrors(str);
    str << ends;
    char *vtkmsg = new char [strlen(str.str()) + 100];
#ifdef UNICODE
    wchar_t *wmsg = new wchar_t [mbstowcs(NULL, vtkmsg, 32000)];
    mbstowcs(wmsg, vtkmsg, 32000);
    delete [] wmsg;
#else
    if (MessageBox(NULL, vtkmsg, "Error",
        MB_ICONERROR | MB_OKCANCEL) == IDCANCEL) 
      { 
      vtkObject::GlobalWarningDisplayOff(); 
      }
#endif
    delete [] vtkmsg;

    str.rdbuf()->freeze(0);
#else
    this->FlushErrors(cout);
#endif
    }
  
  void FlushErrors(ostream& os)
    {
    vtkstd::string::size_type cc;
    for ( cc = 0; cc < this->Errors.size(); cc ++ )
      {
      os << this->Errors[cc].c_str() << endl;
      }
    this->Errors.erase(this->Errors.begin(), this->Errors.end());
    }

  void SetWindowCollection(vtkKWWindowCollection *windows)
    {
    vtkKWWindowCollection* wins = this->Windows;
    this->Windows = windows;
    if ( !wins && this->Windows && this->Errors.size() > 0 )
      {
      ostrstream str;
      this->FlushErrors(str);
      str << ends;
      vtkKWWindow *win = this->Windows->GetLastKWWindow();
      win->ErrorMessage(str.str());
      str.rdbuf()->freeze(0);
      }
    }

  int GetErrorOccurred()
    {
    return this->ErrorOccurred;
    }

  void EnableTestErrors() { this->TestErrors = 1; }
  void DisableTestErrors() { this->TestErrors = 0; }
protected:
  vtkKWWindowCollection *Windows;
  int ErrorOccurred;
  int TestErrors;
  vtkstd::vector<vtkstd::string> Errors;
private:
  vtkPVOutputWindow(const vtkPVOutputWindow&);
  void operator=(const vtkPVOutputWindow&);
};

vtkStandardNewMacro(vtkPVOutputWindow);

Tcl_Interp *vtkPVApplication::InitializeTcl(int argc, 
                                            char *argv[], 
                                            ostream *err)
{

  Tcl_Interp *interp = vtkKWApplication::InitializeTcl(argc, argv, err);
  if (!interp)
    {
    return interp;
    }

  Vtkpvfilterstcl_Init(interp);
#ifdef PARAVIEW_BUILD_DEVELOPMENT
  Vtkpvdevelopmenttcl_Init(interp);
#endif

  if (vtkKWApplication::GetWidgetVisibility())
    {
    Vtktkrenderwidget_Init(interp);
#if defined(PARAVIEW_BUILD_DEVELOPMENT) && defined(PARAVIEW_BLT_LIBRARY)
    Blt_Init(interp);
#endif
    }
   
  Vtkkwparaviewtcl_Init(interp);

#ifdef PARAVIEW_LINK_XDMF
  Vtkxdmftcl_Init(interp);
#endif
  char* script = vtkString::Duplicate(vtkPVApplication::ExitProc);  
  if (Tcl_GlobalEval(interp, script) != TCL_OK)
    {
    if (err)
      {
      *err << Tcl_GetStringResult(interp) << endl;
      }
    // ????
    }  
  delete [] script;
  
  return interp;
}

//----------------------------------------------------------------------------
vtkPVApplication::vtkPVApplication()
{
  vtkPVApplication::MainApplication = this;
  vtkPVOutputWindow *window = vtkPVOutputWindow::New();
  this->OutputWindow = window;
  vtkOutputWindow::SetInstance(this->OutputWindow);

  this->CrashOnErrors = 0;
  this->AlwaysSSH = 0;
  this->MajorVersion = PARAVIEW_VERSION_MAJOR;
  this->MinorVersion = PARAVIEW_VERSION_MINOR;
  this->SetApplicationName("ParaView");
  char name[128];
  sprintf(name, "ParaView%d.%d", this->MajorVersion, this->MinorVersion);
  this->SetApplicationVersionName(name);
  char patch[128];
  sprintf(patch, "%d", PARAVIEW_VERSION_PATCH);
  this->SetApplicationReleaseName(patch);


  this->Display3DWidgets = 0;
  this->ProcessId = 0;
  this->RunningParaViewScript = 0;

  this->ProcessModule = NULL;
  this->RenderModule = NULL;
  this->RenderModuleName = NULL;
  // Now initialized in ParaView.cxx
  //this->SetRenderModuleName("LODRenderModule");
  this->CommandFunction = vtkPVApplicationCommand;

  this->NumberOfPipes = 1;

  this->UseRenderingGroup = 0;
  this->GroupFileName = 0;

  this->UseTiledDisplay = 0;
  this->TileDimensions[0] = this->TileDimensions[1] = 1;

  this->ClientMode = 0;
  this->ServerMode = 0;
  this->HostName = NULL;
  this->SetHostName("localhost");
  this->Port = 11111;
  this->ReverseConnection = 0;
  this->Username = 0;
  this->UseSoftwareRendering = 0;
  this->UseSatelliteSoftware = 0;
  this->UseStereoRendering = 0;
  this->UseOffscreenRendering = 0;
  this->StartEmpty = 0;
  this->PlayDemo = 0;

  // GUI style & consistency

  vtkKWLabeledFrame::AllowShowHideOn();
  vtkKWLabeledFrame::BoldLabelOn();
  
  // The following is necessary to make sure that the tcl object
  // created has the right command function. Without this,
  // the tcl object has the vtkKWApplication's command function
  // since it is first created in vtkKWApplication's constructor
  // (in vtkKWApplication's constructor GetClassName() returns
  // the wrong value because the virtual table is not setup yet)
  char* tclname = vtkString::Duplicate(this->GetTclName());
  vtkTclUpdateCommand(this->MainInterp, tclname, this);
  delete[] tclname;

  this->HasSplashScreen = 1;

  this->TraceFileName = 0;
  this->Argv0 = 0;

  this->StartGUI = 1;

  this->BatchScriptName = 0;
  this->RunBatchScript = 0;

  this->SourcesBrowserAlwaysShowName = 0;
  this->ShowSourcesLongHelp = 1;
  this->DemoPath = NULL;

  this->LogThreshold = 0.01;
}

//----------------------------------------------------------------------------
vtkPVApplication::~vtkPVApplication()
{
  this->SetProcessModule(NULL);
  this->SetRenderModule(NULL);
  this->SetRenderModuleName(NULL);
  if ( this->TraceFile )
    {
    delete this->TraceFile;
    this->TraceFile = 0;
    }
  this->SetGroupFileName(0);
  this->SetTraceFileName(0);
  this->SetArgv0(0);
  this->SetHostName(NULL);
  this->SetUsername(0);
  this->SetDemoPath(NULL);
  vtkOutputWindow::SetInstance(0);
  this->OutputWindow->Delete();
}


  
//----------------------------------------------------------------------------
vtkMultiProcessController* vtkPVApplication::GetController()
{
  return this->ProcessModule->GetController();
}

//----------------------------------------------------------------------------
vtkSocketController* vtkPVApplication::GetSocketController()
{
  vtkPVClientServerModule *csm;
  csm = vtkPVClientServerModule::SafeDownCast(this->ProcessModule);
  if (csm)
    {
    return csm->GetSocketController();
    }
  return NULL;
}

//----------------------------------------------------------------------------
vtkPVWindow *vtkPVApplication::GetMainWindow()
{
  this->Windows->InitTraversal();
  return (vtkPVWindow*)(this->Windows->GetNextItemAsObject());
}

//----------------------------------------------------------------------------
vtkPVRenderView *vtkPVApplication::GetMainView()
{
  return this->GetMainWindow()->GetMainView();
}

//----------------------------------------------------------------------------
int vtkPVApplication::AcceptLicense()
{
  return 1;
}

//----------------------------------------------------------------------------
int vtkPVApplication::AcceptEvaluation()
{
  return 1;
}

//----------------------------------------------------------------------------
int vtkPVApplication::PromptRegistration(char* vtkNotUsed(name), 
                                         char* vtkNotUsed(IDS))
{
  return 1;
}

//----------------------------------------------------------------------------
int vtkPVApplication::CheckRegistration()
{
  return 1;
}

const char vtkPVApplication::ArgumentList[vtkPVApplication::NUM_ARGS][128] = 
{ "--client" , "-c", 
  "Run ParaView as client (MPI run, 1 process) (ParaView Server must be started first).", 
  "--server" , "-v", 
  "Start ParaView as a server (use MPI run).",
  "--host", "-h",
  "Tell the client where to look for the server (default: localhost). Used with --client option or --server -rc options.", 
  "--user", "",
  "Tell the client what username to send to server when establishing SSH connection.",
  "--always-ssh", "",
  "",
  "--port", "",
  "Specify the port client and server will use (--port=11111).  Client and servers ports must match.", 
  "--reverse-connection", "-rc",
  "Have the server connect to the client.", 
  "--stereo", "",
  "Tell the application to enable stero rendering (only when running on a single process).",
  "--render-module", "",
  "User specified rendering module (--render-module=...)",
  "--start-empty" , "-e", 
  "Start ParaView without any default modules.", 
  "--disable-registry", "-dr", 
  "Do not use registry when running ParaView (for testing).", 
  "--batch", "-b", 
  "Load and run the batch script specified.", 
#ifdef VTK_USE_MPI
/* Temporarily disabling - for release
  "--use-rendering-group", "-p",
  "Use a subset of processes to render.",
  "--group-file", "-gf",
  "--group-file=fname where fname is the name of the input file listing number of processors to render on.",
*/
  "--use-tiled-display", "-td",
  "Duplicate the final data to all nodes and tile node displays 1-N into one large display.",
  "--tile-dimensions-x", "-tdx",
  "-tdx=X where X is number of displays in each row of the display.",
  "--tile-dimensions-y", "-tdy",
  "-tdy=Y where Y is number of displays in each column of the display.",
#endif
  "--crash-on-errors", "",
  "",
#ifdef VTK_USE_MANGLED_MESA
  "--use-software-rendering", "-r", 
  "Use software (Mesa) rendering (supports off-screen rendering).", 
  "--use-satellite-software", "-s", 
  "Use software (Mesa) rendering (supports off-screen rendering) only on satellite processes.", 
#endif
  "--use-offscreen-rendering", "-os", 
  "Render offscreen on the satellite processes. This option only works with software rendering or mangled mesa on Unix", 
  "--play-demo", "-pd",
  "Run the ParaView demo.",
  "--help", "",
  "Displays available command line arguments.",
  "" 
};

char* vtkPVApplication::CreateHelpString()
{
  ostrstream error;
  error << "Valid arguments are: " << endl;

  int j=0;
  const char* argument1 = vtkPVApplication::ArgumentList[j];
  const char* argument2 = vtkPVApplication::ArgumentList[j+1];
  const char* help = vtkPVApplication::ArgumentList[j+2];
  while (argument1 && argument1[0])
    {
    if ( strlen(help) > 0 )
      {
      error << argument1;
      if (argument2[0])
        {
        error << ", " << argument2;
        }
      error << " : " << help << endl;
      }
    j += 3;
    argument1 = vtkPVApplication::ArgumentList[j];
    if (argument1 && argument1[0]) 
      {
      argument2 = vtkPVApplication::ArgumentList[j+1];
      help = vtkPVApplication::ArgumentList[j+2];
      }
    }
  error << ends;
  return error.str();
  
}

//----------------------------------------------------------------------------
int vtkPVApplication::CheckForExtension(const char* arg,
                                        const char* ext)
{
  if (!ext)
    {
    return 0;
    }
  int extLen = static_cast<int>(strlen(ext));
  if (extLen <= 0)
    {
    return 0;
    }
  if (!arg || static_cast<int>(strlen(arg)) < extLen)
    {
    return 0;
    }
  if (strcmp(arg + strlen(arg) - extLen, ext) == 0)
    {
    return 1;
    }
  return 0;
}


//----------------------------------------------------------------------------
void vtkPVApplication::SetEnvironmentVariable(const char* str)
{ 
  char* envstr = vtkString::Duplicate(str);
  putenv(envstr);
}

//----------------------------------------------------------------------------
void vtkPVApplication::DeleteTraceFiles(char* name, int all)
{
  if ( !all )
    {
    unlink(name);
    return;
    }
  char buf[256];
  if ( vtkDirectory::GetCurrentWorkingDirectory(buf, 256) )
    {
    vtkDirectory* dir = vtkDirectory::New();
    if ( !dir->Open(buf) )
      {
      dir->Delete();
      return;
      }
    int numFiles = dir->GetNumberOfFiles();
    int len = (int)(strlen("ParaViewTrace"));
    for(int i=0; i<numFiles; i++)
      {
      const char* fname = dir->GetFile(i);
      if ( strncmp(fname, "ParaViewTrace", len) == 0 )
        {
        unlink(fname);
        }
      }
    dir->Delete();
    }
}

//----------------------------------------------------------------------------
int vtkPVApplication::CheckForTraceFile(char* name, unsigned int maxlen)
{
  if ( this->GetRegisteryValue(2,"RunTime", VTK_PV_ASI_SHOW_TRACE_FILES_REG_KEY, 0) &&
    !this->GetIntRegisteryValue(2,"RunTime", VTK_PV_ASI_SHOW_TRACE_FILES_REG_KEY) )
    {
    return 0;
    }
  char buf[256];
  if ( vtkDirectory::GetCurrentWorkingDirectory(buf, 256) )
    {
    vtkDirectory* dir = vtkDirectory::New();
    if ( !dir->Open(buf) )
      {
      dir->Delete();
      return 0;
      }
    int retVal = 0;
    int numFiles = dir->GetNumberOfFiles();
    int len = (int)(strlen("ParaViewTrace"));
    for(int i=0; i<numFiles; i++)
      {
      const char* fname = dir->GetFile(i);
      if ( strncmp(fname, "ParaViewTrace", len) == 0 )
        {
        if ( retVal == 0 )
          {
          strncpy(name, fname, maxlen);
          }
        retVal++;
        }
      }
    dir->Delete();
    return retVal;
    }
  else
    {
    return 0;
    }
}

//----------------------------------------------------------------------------
void vtkPVApplication::SaveTraceFile(const char* fname)
{
  vtkKWLoadSaveDialog* exportDialog = vtkKWLoadSaveDialog::New();
  this->GetMainWindow()->RetrieveLastPath(exportDialog, "SaveTracePath");
  exportDialog->SetParent(this->GetMainWindow());
  exportDialog->Create(this, 0);
  exportDialog->SaveDialogOn();
  exportDialog->SetTitle("Save ParaView Trace");
  exportDialog->SetDefaultExtension(".pvs");
  exportDialog->SetFileTypes("{{ParaView Scripts} {.pvs}} {{All Files} {*}}");
  if ( exportDialog->Invoke() && 
       vtkString::Length(exportDialog->GetFileName())>0 )
    {
    if (rename(fname, exportDialog->GetFileName()) != 0)
      {
      vtkKWMessageDialog::PopupMessage(
        this->GetApplication(), this->GetMainWindow(),
        "Error Saving", "Could not save trace file.",
        vtkKWMessageDialog::ErrorIcon);
      }
    else
      {
      this->GetMainWindow()->SaveLastPath(exportDialog, "SaveTracePath");
      }
    }
  exportDialog->Delete();
}

//----------------------------------------------------------------------------
int vtkPVApplication::ParseCommandLineArguments(int argc, char*argv[])
{
  int i;
  int index=-1;

  // This should really be part of Parsing !!!!!!
  if (argv)
    {
    this->SetArgv0(argv[0]);
    }

  if ( vtkPVApplication::CheckForArgument(argc, argv, "--batch",
                                          index) == VTK_OK ||
       vtkPVApplication::CheckForArgument(argc, argv, "-b",
                                          index) == VTK_OK )
    {
    for (i=1; i < argc; i++)
      {
      if (vtkPVApplication::CheckForExtension(argv[i], ".pvb"))
        {
        this->RunBatchScript = 1;
        this->SetBatchScriptName(argv[i]);
        break;
        }
      }
    return 0;
    }

  for (i=1; i < argc; i++)
    {
    if ( vtkPVApplication::CheckForExtension(argv[i], ".pvs") )
      {
      this->RunningParaViewScript = 1;
      break;
      }
    }

  if (!this->RunningParaViewScript)
    {
    for (i=1; i < argc; i++)
      {
      int valid=0;
      if (argv[i])
        {
        int  j=0;
        const char* argument1 = vtkPVApplication::ArgumentList[j];
        const char* argument2 = vtkPVApplication::ArgumentList[j+1];
        while (argument1 && argument1[0])
          {

          char* newarg = vtkString::Duplicate(argv[i]);
          int len = (int)(strlen(newarg));
          for (int ik=0; ik<len; ik++)
            {
            if (newarg[ik] == '=')
              {
              newarg[ik] = '\0';
              }
            }

          if ( strcmp(newarg, argument1) == 0 || 
               strcmp(newarg, argument2) == 0)
            {
            valid = 1;
            }
          delete[] newarg;
          j += 3;
          argument1 = vtkPVApplication::ArgumentList[j];
          if (argument1 && argument1[0]) 
            {
            argument2 = vtkPVApplication::ArgumentList[j+1];
            }
          }
        }
      if (!valid)
        {
        char* error = this->CreateHelpString();
        vtkErrorMacro("Unrecognized argument " << argv[i] << "." << endl
                      << error);
        delete[] error;
        return 1;
        }
      }
    }

  if ( vtkPVApplication::CheckForArgument(argc, argv, "--help",
                                          index) == VTK_OK )
    {
    char* error = this->CreateHelpString();
    vtkWarningMacro(<<error);
    delete[] error;
    return 1;
    }

  this->PlayDemo = 0;
  if ( vtkPVApplication::CheckForArgument(argc, argv, "--play-demo",
                                          index) == VTK_OK ||
       vtkPVApplication::CheckForArgument(argc, argv, "-pd",
                                          index) == VTK_OK )
    {
    this->PlayDemo = 1;
    }

  if ( vtkPVApplication::CheckForArgument(argc, argv, "--disable-registry",
                                          index) == VTK_OK ||
       vtkPVApplication::CheckForArgument(argc, argv, "-dr",
                                          index) == VTK_OK )
    {
    this->RegisteryLevel = 0;
    }

  if ( vtkPVApplication::CheckForArgument(argc, argv, "--stereo",
                                          index) == VTK_OK)
    {
    this->UseStereoRendering = 1;
    }

#ifdef VTK_USE_MPI
// Temporarily removing this (for the release - it has bugs)
//    if ( vtkPVApplication::CheckForArgument(argc, argv, "--use-rendering-group",
//                                            index) == VTK_OK ||
//         vtkPVApplication::CheckForArgument(argc, argv, "-p",
//                                            index) == VTK_OK )
//      {
//      this->UseRenderingGroup = 1;
//      }

//    if ( vtkPVApplication::CheckForArgument(argc, argv, "--group-file",
//                                            index) == VTK_OK ||
//         vtkPVApplication::CheckForArgument(argc, argv, "-gf",
//                                            index) == VTK_OK )
//      {
//      const char* newarg=0;
//      int len = (int)(strlen(argv[index]));
//      for (int i=0; i<len; i++)
//        {
//        if (argv[index][i] == '=')
//          {
//          newarg = &(argv[index][i+1]);
//          }
//        }
//      this->SetGroupFileName(newarg);
//      }

  if ( vtkPVApplication::CheckForArgument(argc, argv, "--use-tiled-display",
                                          index) == VTK_OK ||
       vtkPVApplication::CheckForArgument(argc, argv, "-td",
                                          index) == VTK_OK )
    {
    this->UseTiledDisplay = 1;

    if ( vtkPVApplication::CheckForArgument(argc, argv, "--tile-dimensions-x",
                                            index) == VTK_OK ||
         vtkPVApplication::CheckForArgument(argc, argv, "-tdx",
                                          index) == VTK_OK )
      {
      // Strip string to equals sign.
      const char* newarg=0;
      int len = (int)(strlen(argv[index]));
      for (i=0; i<len; i++)
        {
        if (argv[index][i] == '=')
          {
          newarg = &(argv[index][i+1]);
          }
        }
      this->TileDimensions[0] = atoi(newarg);
      }
    if ( vtkPVApplication::CheckForArgument(argc, argv, "--tile-dimensions-y",
                                            index) == VTK_OK ||
         vtkPVApplication::CheckForArgument(argc, argv, "-tdy",
                                          index) == VTK_OK )
      {
      // Strip string to equals sign.
      const char* newarg=0;
      int len = (int)(strlen(argv[index]));
      for (i=0; i<len; i++)
        {
        if (argv[index][i] == '=')
          {
          newarg = &(argv[index][i+1]);
          }
        }
      this->TileDimensions[1] = atoi(newarg);
      }
    }
#endif


  if ( vtkPVApplication::CheckForArgument(argc, argv, "--client",
                                          index) == VTK_OK ||
       vtkPVApplication::CheckForArgument(argc, argv, "-c",
                                          index) == VTK_OK )
    {
    this->ClientMode = 1;

    if ( vtkPVApplication::CheckForArgument(argc, argv, "--user",
                                            index) == VTK_OK )
      {
      // Strip string to equals sign.
      const char* newarg=0;
      int len = (int)(strlen(argv[index]));
      for (i=0; i<len; i++)
        {
        if (argv[index][i] == '=')
          {
          newarg = &(argv[index][i+1]);
          }
        }
      this->SetUsername(newarg);
      }
    }

  if ( vtkPVApplication::CheckForArgument(argc, argv, "--server",
                                          index) == VTK_OK ||
       vtkPVApplication::CheckForArgument(argc, argv, "-v",
                                          index) == VTK_OK )
    {
    this->ServerMode = 1;
    }

  if (this->ServerMode || this->ClientMode)
    {
    if ( vtkPVApplication::CheckForArgument(argc, argv, "--host",
                                            index) == VTK_OK ||
         vtkPVApplication::CheckForArgument(argc, argv, "-h",
                                          index) == VTK_OK )
      {
      // Strip string to equals sign.
      const char* newarg=0;
      int len = (int)(strlen(argv[index]));
      for (i=0; i<len; i++)
        {
        if (argv[index][i] == '=')
          {
          newarg = &(argv[index][i+1]);
          }
        }
      this->SetHostName(newarg);
      }

    if ( vtkPVApplication::CheckForArgument(argc, argv, "--port",
                                            index) == VTK_OK)
      {
      // Strip string to equals sign.
      const char* newarg=0;
      int len = (int)(strlen(argv[index]));
      for (i=0; i<len; i++)
        {
        if (argv[index][i] == '=')
          {
          newarg = &(argv[index][i+1]);
          }
        }
      this->Port = atoi(newarg);
      }
    // Change behavior so server connects to the client.
    if ( vtkPVApplication::CheckForArgument(argc, argv, "--reverse-connection",
                                            index) == VTK_OK ||
         vtkPVApplication::CheckForArgument(argc, argv, "-rc",
                                            index) == VTK_OK )
      {
      this->ReverseConnection = 1;
      }
    }

  if (this->ClientMode)
    {
    if ( vtkPVApplication::CheckForArgument(argc, argv, "--always-ssh",
                                            index) == VTK_OK)
      {
      this->AlwaysSSH = 1;
      }
    }

  if ( vtkPVApplication::CheckForArgument(argc, argv, "--start-empty", index) 
       == VTK_OK || 
       vtkPVApplication::CheckForArgument(argc, argv, "-e", index) 
       == VTK_OK)
    {
    this->StartEmpty = 1;
    }

  if ( vtkPVApplication::CheckForArgument(argc, argv, "--render-module",
                                            index) == VTK_OK)
    {
    // Strip string to equals sign.
    const char* newarg=0;
    int len = (int)(strlen(argv[index]));
    for (i=0; i<len; i++)
      {
      if (argv[index][i] == '=')
        {
        newarg = &(argv[index][i+1]);
        }
      }
    this->SetRenderModuleName(newarg);
    }
    
#ifdef VTK_USE_MANGLED_MESA
  
  if ( vtkPVApplication::CheckForArgument(argc, argv, "--use-software-rendering",
                                          index) == VTK_OK ||
       vtkPVApplication::CheckForArgument(argc, argv, "-r",
                                          index) == VTK_OK ||
       vtkPVApplication::CheckForArgument(argc, argv, "--use-satellite-software",
                                          index) == VTK_OK ||
       vtkPVApplication::CheckForArgument(argc, argv, "-s",
                                          index) == VTK_OK ||
       getenv("PV_SOFTWARE_RENDERING") )
    {
    this->UseSoftwareRendering = 1;
    if ( getenv("PV_SOFTWARE_RENDERING") ||
         vtkPVApplication::CheckForArgument(
           argc, argv, "--use-satellite-software", index) == VTK_OK ||
         vtkPVApplication::CheckForArgument(argc, argv, "-s",
                                            index) == VTK_OK)
      {
      this->UseSatelliteSoftware = 1;
      }
    }
#endif

  if ( vtkPVApplication::CheckForArgument(argc, argv, "--offscreen-rendering",
                                          index) == VTK_OK ||
       vtkPVApplication::CheckForArgument(argc, argv, "-os",
                                          index) == VTK_OK ||
       getenv("PV_OFFSCREEN") )
    {
    this->UseOffscreenRendering = 1;
    }
  
  if ( vtkPVApplication::CheckForArgument(argc, argv, "--crash-on-errors",
      index) == VTK_OK )
    {
    this->CrashOnErrors = 1;
    }

  return 0;
}


//----------------------------------------------------------------------------
void vtkPVApplication::Start(int argc, char*argv[])
{
  // Find the installation directory (now that we have the app name)
  this->FindApplicationInstallationDirectory();

  if (this->RunBatchScript)
    {
    vtkPVProcessModule* pm = this->GetProcessModule();
    pm->GetStream() << vtkClientServerStream::Invoke
                    << pm->GetApplicationID()
                    << "LoadScript"
                    << this->GetBatchScriptName()
                    << vtkClientServerStream::End;
    pm->SendStreamToClientAndServer();
    this->Exit();
    return;
    }

  // set the font size to be small
#ifdef _WIN32
  this->Script("option add *font {{Tahoma} 8}");
#else
  // Specify a font only if there isn't one in the database
  this->Script(
    "toplevel .tmppvwindow -class ParaView;"
    "if {[option get .tmppvwindow font ParaView] == \"\"} {"
    "option add *font "
    "-adobe-helvetica-medium-r-normal--12-120-75-75-p-67-iso8859-1};"
    "destroy .tmppvwindow");
  this->Script("option add *highlightThickness 0");
  this->Script("option add *highlightBackground #ccc");
  this->Script("option add *activeBackground #eee");
  this->Script("option add *activeForeground #000");
  this->Script("option add *background #ccc");
  this->Script("option add *foreground #000");
  this->Script("option add *Entry.background #ffffff");
  this->Script("option add *Text.background #ffffff");
  this->Script("option add *Button.padX 6");
  this->Script("option add *Button.padY 3");
  this->Script("option add *selectColor #666");
#endif

#ifdef VTK_USE_MANGLED_MESA
  if (this->UseSoftwareRendering)
    {
    vtkPVProcessModule* pm = this->GetProcessModule();
    vtkClientServerID gf = pm->NewStreamObject("vtkGraphicsFactory");
    pm->GetStream() << vtkClientServerStream::Invoke
                    << gf << "SetUseMesaClasses" << 1
                    << vtkClientServerStream::End;
    pm->DeleteStreamObject(gf);
    vtkClientServerID imf = pm->NewStreamObject("vtkImagingFactory");
    pm->GetStream() << vtkClientServerStream::Invoke
                    << imf << "SetUseMesaClasses" << 1
                    << vtkClientServerStream::End;
    pm->DeleteStreamObject(imf);
    pm->SendStreamToClientAndServer();

    if (this->UseSatelliteSoftware)
      {
      vtkGraphicsFactory::SetUseMesaClasses(1);
      vtkImagingFactory::SetUseMesaClasses(1);
      }
    }
#endif


// Temporarily removing this (for the release - it has bugs)
//    // Handle setting up the SGI pipes.
//    if (this->UseRenderingGroup)
//      {
//      int numProcs = this->ProcessModule->GetNumberOfPartitions();
//      int numPipes = 1;
//      int id;
//      int fileFound=0;
//      // Until I add a user interface to set the number of pipes,
//      // just read it from a file.
//      if (this->GroupFileName)
//        {
//        ifstream ifs;
//        ifs.open(this->GroupFileName,ios::in);
//        if (ifs.fail())
//          {
//          vtkErrorMacro("Could not find the file " << this->GroupFileName);
//          }
//        else
//          {
//          char bfr[1024];
//          ifs.getline(bfr, 1024);
//          numPipes = atoi(bfr);
//          if (numPipes > numProcs) { numPipes = numProcs; }
//          if (numPipes < 1) { numPipes = 1; }
//          this->BroadcastScript("$Application SetNumberOfPipes %d", numPipes);   
        
//          for (id = 0; id < numPipes; ++id)
//            {
//            ifs.getline(bfr, 1024);
//            this->RemoteScript(
//              id, "$Application SetEnvironmentVariable {DISPLAY=%s}", 
//              bfr);
//            }
//          fileFound = 1;
//          }
//        }

    
//      if (!fileFound)
//        {
//        numPipes = numProcs;
//        vtkPVRenderGroupDialog *rgDialog = vtkPVRenderGroupDialog::New();
//        const char *displayString;
//        displayString = getenv("DISPLAY");
//        if (displayString)
//          {
//          rgDialog->SetDisplayString(0, displayString);
//          }
//        rgDialog->SetNumberOfProcessesInGroup(numPipes);
//        rgDialog->Create(this);
      
//        rgDialog->Invoke();
//        numPipes = rgDialog->GetNumberOfProcessesInGroup();
      
//        this->BroadcastScript("$Application SetNumberOfPipes %d", numPipes);    
      
//        if (displayString)
//          {    
//          for (id = 1; id < numPipes; ++id)
//            {
//            // Format a new display string based on process.
//            displayString = rgDialog->GetDisplayString(id);
//            this->RemoteScript(
//              id, "$Application SetEnvironmentVariable {DISPLAY=%s}", 
//              displayString);
//            }
//          }
//        rgDialog->Delete();
//        }
//      }

  // Create the rendering module here.
  char* rmClassName;
  rmClassName = new char[strlen(this->RenderModuleName) + 20];
  sprintf(rmClassName, "vtkPV%s", this->RenderModuleName);
  vtkObject* o = vtkInstantiator::CreateInstance(rmClassName);
  vtkPVRenderModule* rm = vtkPVRenderModule::SafeDownCast(o);
  if (rm == NULL)
    {
    vtkErrorMacro("Could not create render module " << rmClassName);
    this->SetRenderModuleName("RenderModule");
    o = vtkInstantiator::CreateInstance("vtkPVRenderModule");
    rm = vtkPVRenderModule::SafeDownCast(o);
    }
  this->SetRenderModule(rm);
  rm->SetPVApplication(this);
  o->Delete();
  o = NULL;
  rm = NULL;

  delete [] rmClassName;
  rmClassName = NULL;
  if ( !this->RenderModule )
    {
    return;
    }

  vtkstd::vector<vtkstd::string> open_files;
  // If any of the arguments has a .pvs extension, load it as a script.
  int i;
  for (i=1; i < argc; i++)
    {
    if (vtkPVApplication::CheckForExtension(argv[i], ".pvs"))
      {
      if ( !vtkKWDirectoryUtilities::FileExists(argv[i]) )
        {
        vtkErrorMacro("Could not find the script file: " << argv[i]);
        this->SetRenderModule(NULL);
        this->SetExitStatus(1);
        this->Exit();
        return;
        }
      else
        {
        open_files.push_back(argv[i]);
        }
      }
    }

  // Splash screen ?

  if (this->ShowSplashScreen)
    {
    this->CreateSplashScreen();
    this->SplashScreen->SetProgressMessage("Initializing application...");
    }

  // Application Icon 
#ifdef _WIN32
  this->Script("SetApplicationIcon {} %d big",
               IDI_PARAVIEWICO);
  // No, we can't set the same icon, even if it has both 32x32 and 16x16
  this->Script("SetApplicationIcon {} %d small",
               IDI_PARAVIEWICOSMALL);
#endif

  vtkPVWindow *ui = vtkPVWindow::New();
  this->AddWindow(ui);

  vtkCallbackCommand *ccm = vtkCallbackCommand::New();
  ccm->SetClientData(this);
  ccm->SetCallback(::vtkPVAppProcessMessage);  
  ui->AddObserver(vtkKWEvent::WarningMessageEvent, ccm);
  ui->AddObserver(vtkKWEvent::ErrorMessageEvent, ccm);
  ccm->Delete();

  if (this->ShowSplashScreen)
    {
    this->SplashScreen->SetProgressMessage("Creating icons...");
    }

  this->CreateButtonPhotos();

  if (this->StartEmpty)
    {
    ui->InitializeDefaultInterfacesOff();
    }

  if (this->ShowSplashScreen)
    {
    this->SplashScreen->SetProgressMessage("Creating UI...");
    }

  ui->Create(this,"");

  // ui has ref. count of at least 1 because of AddItem() above
  ui->Delete();

  this->Script("proc bgerror { m } "
               "{ global Application; $Application DisplayTCLError $m }");
  this->OutputWindow->SetWindowCollection( this->Windows );

  // Check if there is an existing ParaViewTrace file.
  if (this->ShowSplashScreen)
    {
    this->SplashScreen->SetProgressMessage("Looking for old trace files...");
    }
  char traceName[128];
  int foundTrace = this->CheckForTraceFile(traceName, 128);

  if (this->ShowSplashScreen)
    {
    this->SplashScreen->Hide();
    }

  // If there is already an existing trace file, ask the
  // user what she wants to do with it.
  if (foundTrace && ! this->RunningParaViewScript) 
    {
    vtkPVTraceFileDialog *dlg2 = vtkPVTraceFileDialog::New();
    dlg2->SetMasterWindow(ui);
    dlg2->Create(this,"");
    ostrstream str;
    str << "Do you want to save the existing tracefile?\n\n"
        << "A tracefile called " << traceName << " was found in "
        << "the current directory. This might mean that there is "
        << "another instance of ParaView running or ParaView crashed "
        << "previously and failed to delete it.\n"
        << "If ParaView crashed previously, this tracefile can "
        << "be useful in tracing the problem and you should consider "
        << "saving it.\n"
        << "If there is another instance of ParaView running, select "
        << "\"Do Nothing\" to avoid potential problems."
        << ends;
    dlg2->SetText(str.str());
    str.rdbuf()->freeze(0);
    dlg2->SetTitle("Tracefile found");
    dlg2->SetIcon();
    int shouldSave = dlg2->Invoke();
    dlg2->Delete();
    if (shouldSave == 2)
      {
      this->SaveTraceFile(traceName);
      }
    else if (shouldSave == 1)
      {
      if ( foundTrace > 1 )
        {
        char buffer[1024];
        sprintf(buffer, "Do you want to delete all the tracefiles? Answering No will only delete \"%s\".",
          traceName);
        int all = vtkKWMessageDialog::PopupYesNo(
          this, ui, "Delete Trace Files",
          buffer,
          vtkKWMessageDialog::QuestionIcon);
        this->DeleteTraceFiles(traceName, all);
        }
      else
        {
        this->DeleteTraceFiles(traceName, 0);
        }
      }
    // Having trouble with tiled display.
    // Not all tiles rendered properly after this dialoge at startup.
    // It must have been a race condition.
    this->GetMainView()->EventuallyRender();
    }

  // Open the trace file.
  int count = 0;
  struct stat fs;
  while(1)
    {
    ostrstream str;
    str << "ParaViewTrace" << count++ << ".pvs" << ends;
    if ( stat(str.str(), &fs) != 0 || count >= 10 )
      {
      this->SetTraceFileName(str.str());
      str.rdbuf()->freeze(0);
      break;
      }
    str.rdbuf()->freeze(0);
    }

  this->TraceFile = new ofstream(this->TraceFileName, ios::out);
    
  // Initialize a couple of variables in the trace file.
  this->AddTraceEntry("set kw(%s) [$Application GetMainWindow]",
                      ui->GetTclName());
  ui->SetTraceInitialized(1);
  // We have to set this variable after the window variable is set,
  // so it has to be done here.
  this->AddTraceEntry("set kw(%s) [$kw(%s) GetMainView]",
                      ui->GetMainView()->GetTclName(), ui->GetTclName());
  ui->GetMainView()->SetTraceInitialized(1);

  vtkstd::vector<vtkstd::string>::size_type cc;
  for ( cc = 0; cc < open_files.size(); cc ++ )
    {
    this->RunningParaViewScript = 1;
    // Some scripts were hanging due to event loop issues.
    // This update prevents such problems.
    this->Script("update");
    ui->LoadScript(open_files[cc].c_str());
    this->RunningParaViewScript = 0;
    }
  
  if (this->PlayDemo)
    {
    this->Script("set pvDemoCommandLine 1");
    ui->PlayDemo();
    }
  else
    {
    this->vtkKWApplication::Start(argc,argv);
    }
  this->OutputWindow->SetWindowCollection(0);

  // Circular reference.
  this->SetRenderModule(NULL);
}

//----------------------------------------------------------------------------
void vtkPVApplication::GetApplicationSettingsFromRegistery()
{ 
  this->Superclass::GetApplicationSettingsFromRegistery();

  // Show sources description ?

  if (this->HasRegisteryValue(
    2, "RunTime", VTK_PV_ASI_SHOW_SOURCES_DESCRIPTION_REG_KEY))
    {
    this->ShowSourcesLongHelp = this->GetIntRegisteryValue(
      2, "RunTime", VTK_PV_ASI_SHOW_SOURCES_DESCRIPTION_REG_KEY);
    }

  // Show name in sources description browser

  if (this->HasRegisteryValue(
    2, "RunTime", VTK_PV_ASI_SHOW_SOURCES_NAME_REG_KEY))
    {
    this->SourcesBrowserAlwaysShowName = this->GetIntRegisteryValue(
      2, "RunTime", VTK_PV_ASI_SHOW_SOURCES_NAME_REG_KEY);
    }
}

//-----------------------------------------------------------------------------
void vtkPVApplication::SetShowSourcesLongHelp(int v)
{
  if (this->ShowSourcesLongHelp == v)
    {
    return;
    }

  this->ShowSourcesLongHelp = v;
  this->Modified();

  // Update the properties of all the sources previously created
  // so that the Description label can be removed/brought back.
  
  if (this->GetMainWindow())
    {
    vtkPVSource *pvs;
    vtkPVSourceCollection *col = 
      this->GetMainWindow()->GetSourceList("Sources");
    vtkCollectionIterator *cit = col->NewIterator();
    cit->InitTraversal();
    while (!cit->IsDoneWithTraversal())
      {
      pvs = static_cast<vtkPVSource*>(cit->GetObject()); 
      pvs->UpdateProperties();
      cit->GoToNextItem();
      }
    cit->Delete();
    }
}

//-----------------------------------------------------------------------------
void vtkPVApplication::SetSourcesBrowserAlwaysShowName(int v)
{
  if (this->SourcesBrowserAlwaysShowName == v)
    {
    return;
    }

  this->SourcesBrowserAlwaysShowName = v;
  this->Modified();

  if (this->GetMainView())
    {
    this->GetMainView()->SetSourcesBrowserAlwaysShowName(v);
    }
}

//----------------------------------------------------------------------------
void vtkPVApplication::Close(vtkKWWindow *win)
{
  if (this->Windows->GetNumberOfItems() == 1)
    {
    // Try to get the render window to destruct before the render widget.
    this->SetRenderModule(NULL);
    }

  this->Superclass::Close(win);
}

//----------------------------------------------------------------------------
void vtkPVApplication::Exit()
{  
  // Avoid recursive exit calls during window destruction.
  if (this->InExit)
    {
    return;
    }
  
  // If errors were reported to the output window, return a bad
  // status.
  if(vtkPVOutputWindow* w =
     vtkPVOutputWindow::SafeDownCast(vtkOutputWindow::GetInstance()))
    {
    if(w->GetErrorOccurred())
      {
      this->SetExitStatus(1);
      }
    }
  
  // Remove the ParaView output window so errors during exit will
  // still be displayed.
  vtkOutputWindow::SetInstance(0);

  this->vtkKWApplication::Exit();

  if ( this->ProcessModule )
    {
    this->ProcessModule->Exit();
    }

  // This is a normal exit.  Close trace file here and delete it.
  if (this->TraceFile)
    {
    this->TraceFile->close();
    delete this->TraceFile;
    this->TraceFile = NULL;
    }
  if (this->TraceFileName)
    {
    unlink(this->TraceFileName);
    }
}


//----------------------------------------------------------------------------
void vtkPVApplication::StartRecordingScript(char *filename)
{
  if (this->TraceFile)
    {
    *this->TraceFile << "$Application StartRecordingScript " << filename << endl;
    this->StopRecordingScript();
    }

  this->TraceFile = new ofstream(filename, ios::out);
  if (this->TraceFile && this->TraceFile->fail())
    {
    vtkErrorMacro("Could not open trace file " << filename);
    delete this->TraceFile;
    this->TraceFile = NULL;
    return;
    }

  // Initialize a couple of variables in the trace file.
  this->AddTraceEntry("set kw(%s) [$Application GetMainWindow]",
                      this->GetMainWindow()->GetTclName());
  this->GetMainWindow()->SetTraceInitialized(1);
  this->SetTraceFileName(filename);
}

//----------------------------------------------------------------------------
void vtkPVApplication::StopRecordingScript()
{
  if (this->TraceFile)
    {
    this->TraceFile->close();
    delete this->TraceFile;
    this->TraceFile = NULL;
    }
}


//----------------------------------------------------------------------------
void vtkPVApplication::SetGlobalLODFlag(int val)
{
  if (vtkPVApplication::GlobalLODFlag == val)
    {
    return;
    }
  vtkPVProcessModule* pm = this->GetProcessModule();
  pm->GetStream() << vtkClientServerStream::Invoke
                  << pm->GetApplicationID()
                  << "SetGlobalLODFlagInternal"
                  << val
                  << vtkClientServerStream::End;
  pm->SendStreamToClientAndServer();
}

 
//----------------------------------------------------------------------------
void vtkPVApplication::SetGlobalLODFlagInternal(int val)
{
  vtkPVApplication::GlobalLODFlag = val;
}





//----------------------------------------------------------------------------
int vtkPVApplication::GetGlobalLODFlag()
{
  return vtkPVApplication::GlobalLODFlag;
}


//============================================================================
// Make instances of sources.
//============================================================================

void vtkPVApplication::DisplayHelp(vtkKWWindow* master)
{
#ifdef _WIN32
  ostrstream temp;
  if (this->ApplicationInstallationDirectory)
    {
    temp << this->ApplicationInstallationDirectory << "/";
    }
  temp << this->ApplicationName << ".chm" << ends;

  struct stat fs;
  if (stat(temp.str(), &fs) == 0) 
    {
    HtmlHelp(NULL, temp.str(), HH_DISPLAY_TOPIC, 0);
    temp.rdbuf()->freeze(0);
    return;
    }
  temp.rdbuf()->freeze(0);

  const char** dir;
  for(dir=VTK_PV_HELP_PATHS; *dir; ++dir)
    {
    ostrstream temp2;
    temp2 << *dir << "/" << this->ApplicationName << ".chm";
    if (stat(temp2.str(), &fs) == 0) 
      {
      HtmlHelp(NULL, temp2.str(), HH_DISPLAY_TOPIC, 0);
      temp2.rdbuf()->freeze(0);
      return;
      }
    temp2.rdbuf()->freeze(0);
    }

  vtkKWMessageDialog *dlg = vtkKWMessageDialog::New();
  dlg->SetTitle("ParaView Help");
  dlg->SetMasterWindow(master);
  dlg->Create(this,"");
  dlg->SetText(
    "The help file could not be found. Please make sure that ParaView "
    "is installed properly.");
  dlg->Invoke();  
  dlg->Delete();
  return;
    
#else

  vtkKWMessageDialog *dlg = vtkKWMessageDialog::New();
  dlg->SetTitle("ParaView Help");
  dlg->SetMasterWindow(master);
  dlg->Create(this,"");
  dlg->SetText(
    "HTML help is included in the Documentation/HTML subdirectory of"
    "this application. You can view this help using a standard web browser.");
  dlg->Invoke();  
  dlg->Delete();


#endif
}

//----------------------------------------------------------------------------
void vtkPVApplication::LogStartEvent(char* str)
{
  vtkTimerLog::MarkStartEvent(str);
}

//----------------------------------------------------------------------------
void vtkPVApplication::LogEndEvent(char* str)
{
  vtkTimerLog::MarkEndEvent(str);
}

#ifdef PV_HAVE_TRAPS_FOR_SIGNALS
//----------------------------------------------------------------------------
void vtkPVApplication::SetupTrapsForSignals(int nodeid)
{
#ifndef _WIN32
  signal(SIGHUP, vtkPVApplication::TrapsForSignals);
#endif
  signal(SIGINT, vtkPVApplication::TrapsForSignals);
  if ( nodeid == 0 )
    {
    signal(SIGILL,  vtkPVApplication::TrapsForSignals);
    signal(SIGABRT, vtkPVApplication::TrapsForSignals);
    signal(SIGSEGV, vtkPVApplication::TrapsForSignals);

#ifndef _WIN32
    signal(SIGQUIT, vtkPVApplication::TrapsForSignals);
    signal(SIGPIPE, vtkPVApplication::TrapsForSignals);
    signal(SIGBUS,  vtkPVApplication::TrapsForSignals);
#endif
    }
}

//----------------------------------------------------------------------------
void vtkPVApplication::TrapsForSignals(int signal)
{
  if ( !vtkPVApplication::MainApplication )
    {
    exit(1);
    }
  
  switch ( signal )
    {
#ifndef _WIN32
    case SIGHUP:
      return;
      break;
#endif
    case SIGINT:
#ifndef _WIN32
    case SIGQUIT: 
#endif
      break;
    case SIGILL:
    case SIGABRT: 
    case SIGSEGV:
#ifndef _WIN32
    case SIGPIPE:
    case SIGBUS:
#endif
      vtkPVApplication::ErrorExit(); 
      break;      
    }
  
  if ( vtkPVApplication::MainApplication->GetProcessId() )
    {
    return;
    }
  vtkPVWindow *win = vtkPVApplication::MainApplication->GetMainWindow();
  if ( !win )
    {
    cout << "Call exit on application" << endl;
    vtkPVApplication::MainApplication->Exit();
    }
  cout << "Call exit on window" << endl;
  win->Exit();
}

//----------------------------------------------------------------------------
void vtkPVApplication::ErrorExit()
{
  // This { is here because compiler is smart enough to know that exit
  // exits the code without calling destructors. By adding this,
  // destructors are called before the exit.
  {
  cout << "There was a major error! Trying to exit..." << endl;
  char name[] = "ErrorApplication";
  char *n = name;
  char** args = &n;
  Tcl_Interp *interp = vtkKWApplication::InitializeTcl(1, args);
  ostrstream str;
  char buffer[1024];
#ifdef _WIN32
  _getcwd(buffer, 1023);
#else
  getcwd(buffer, 1023);
#endif

  Tcl_GlobalEval(interp, "wm withdraw .");
#ifdef _WIN32
  str << "option add *font {{MS Sans Serif} 8}" << endl;
#else
  str << "option add *font "
    "-adobe-helvetica-medium-r-normal--12-120-75-75-p-67-iso8859-1" << endl;
  str << "option add *highlightThickness 0" << endl;
  str << "option add *highlightBackground #ccc" << endl;
  str << "option add *activeBackground #eee" << endl;
  str << "option add *activeForeground #000" << endl;
  str << "option add *background #ccc" << endl;
  str << "option add *foreground #000" << endl;
  str << "option add *Entry.background #ffffff" << endl;
  str << "option add *Text.background #ffffff" << endl;
  str << "option add *Button.padX 6" << endl;
  str << "option add *Button.padY 3" << endl;
#endif
  str << "tk_messageBox -type ok -message {It looks like ParaView "
      << "or one of its libraries performed an illegal opeartion and "
      << "it will be terminated. Please report this error to "
      << "bug-report@kitware.com. You may want to include a small "
      << "description of what you did when this happened and your "
      << "ParaView trace file: " << buffer
      << "/ParaViewTrace.pvs} -icon error"
      << ends;
  Tcl_GlobalEval(interp, str.str());
  str.rdbuf()->freeze(0);
  }
  exit(1);
}
#endif // PV_HAVE_TRAPS_FOR_SIGNALS

//----------------------------------------------------------------------------
void vtkPVApplication::SetLogBufferLength(int length)
{
  vtkTimerLog::SetMaxEntries(length);
}

//----------------------------------------------------------------------------
void vtkPVApplication::ResetLog()
{
  vtkTimerLog::ResetLog();
}

//----------------------------------------------------------------------------
void vtkPVApplication::SetEnableLog(int flag)
{
  vtkTimerLog::SetLogging(flag);
}

//----------------------------------------------------------------------------
void vtkPVApplication::PrintSelf(ostream& os, vtkIndent indent)
{
  this->Superclass::PrintSelf(os,indent);

  os << indent << "ProcessModule: " << this->ProcessModule << endl;;
  os << indent << "RunningParaViewScript: " 
     << ( this->RunningParaViewScript ? "on" : " off" ) << endl;
  os << indent << "Current Process Id: " << this->ProcessId << endl;
  os << indent << "NumberOfPipes: " << this->NumberOfPipes << endl;
  os << indent << "UseRenderingGroup: " << (this->UseRenderingGroup?"on":"off")
     << endl; 
  os << indent << "UseOffscreenRendering: " << (this->UseOffscreenRendering?"on":"off")
     << endl; 
  os << indent << "StartGUI: " << this->StartGUI << endl;
  if (this->UseTiledDisplay)
    { 
    os << indent << "UseTiledDisplay: On\n";
    os << indent << "TileDimensions: " << this->TileDimensions[0]
       << ", " << this->TileDimensions[1] << endl;
    }

  os << indent << "UseStereoRendering: " << this->UseStereoRendering << endl;
  os << indent << "RenderModuleName: " 
     << (this->RenderModuleName?this->RenderModuleName:"(none)") << endl;

  if (this->ClientMode)
    {
    os << indent << "Running as a client\n";
    os << indent << "Port: " << this->Port << endl;
    os << indent << "Host: " << (this->HostName?this->HostName:"(none)") << endl;
    os << indent << "Username: " 
       << (this->Username?this->Username:"(none)") << endl;
    os << indent << "AlwaysSSH: " << this->AlwaysSSH << endl;
    os << indent << "ReverseConnection: " << this->ReverseConnection << endl;
    }
  if (this->ServerMode)
    {
    os << indent << "Running as a server\n";
    os << indent << "Port: " << this->Port << endl;
    os << indent << "ReverseConnection: " << this->ReverseConnection << endl;
    }
  if (this->UseSoftwareRendering)
    {
    os << indent << "UseSoftwareRendering: Enabled\n";
    }
  if (this->UseSatelliteSoftware)
    {
    os << indent << "UseSatelliteSoftware: Enabled\n";
    }
  if (this->StartEmpty)
    {
    os << indent << "ParaView was started with no default modules.\n";
    }
  os << indent << "Display3DWidgets: " << (this->Display3DWidgets?"on":"off") 
     << endl;
  os << indent << "TraceFileName: " 
     << (this->TraceFileName ? this->TraceFileName : "(none)") << endl;
  os << indent << "Argv0: " 
     << (this->Argv0 ? this->Argv0 : "(none)") << endl;

  os << indent << "RenderModuleName: " 
    << (this->RenderModuleName?this->RenderModuleName:"(null)") << endl;
  os << indent << "ShowSourcesLongHelp: " 
     << (this->ShowSourcesLongHelp?"on":"off") << endl;
  os << indent << "SourcesBrowserAlwaysShowName: " 
     << (this->SourcesBrowserAlwaysShowName?"on":"off") << endl;

  os << indent << "LogThreshold: " << this->LogThreshold << endl;
  os << indent << "CrashOnErrors: " << (this->CrashOnErrors?"on":"off") << endl;
}

void vtkPVApplication::DisplayTCLError(const char* message)
{
  vtkErrorMacro("TclTk error: "<<message);
}

//----------------------------------------------------------------------------
const char* const vtkPVApplication::ExitProc =
"proc exit {} { global Application; $Application Exit }";

//============================================================================
// Stuff that is a part of render-process module.

//-----------------------------------------------------------------------------
char* vtkPVApplication::GetDemoPath()
{
  int found=0;
  char temp1[1024];
  struct stat fs;

  this->SetDemoPath(NULL);

#ifdef _WIN32  

  if (this->GetApplicationInstallationDirectory())
    {
    sprintf(temp1, "%s/Demos/Demo1.pvs",
            this->GetApplicationInstallationDirectory());
    if (stat(temp1, &fs) == 0) 
      {
      sprintf(temp1, "%s/Demos",
              this->GetApplicationInstallationDirectory());
      this->SetDemoPath(temp1);
      found=1;
      }
    }

#else

  vtkKWDirectoryUtilities* util = vtkKWDirectoryUtilities::New();
  const char* selfPath = util->FindSelfPath(
    this->GetArgv0());
  const char* relPath = "../share/paraview-" PARAVIEW_VERSION "/Demos";
  char* newPath = new char[strlen(selfPath)+strlen(relPath)+2];
  sprintf(newPath, "%s/%s", selfPath, relPath);

  char* demoFile = new char[strlen(newPath)+strlen("/Demo1.pvs")+1];
  sprintf(demoFile, "%s/Demo1.pvs", newPath);

  if (stat(demoFile, &fs) == 0) 
    {
    this->SetDemoPath(newPath);
    found = 1;
    }

  delete[] demoFile;
  delete[] newPath;
  util->Delete();

#endif // _WIN32  

  if (!found)
    {
    // Look in binary and installation directories
    const char** dir;
    for(dir=VTK_PV_DEMO_PATHS; !found && *dir; ++dir)
      {
      sprintf(temp1, "%s/Demo1.pvs", *dir);
      if (stat(temp1, &fs) == 0) 
        {
        this->SetDemoPath(*dir);
        found = 1;
        }
      }
    }

  return this->DemoPath;
}

void vtkPVApplication::EnableTestErrors()
{
  this->OutputWindow->EnableTestErrors();
}

void vtkPVApplication::DisableTestErrors()
{
  this->OutputWindow->DisableTestErrors();
}

void vtkPVApplication::Abort()
{
  vtkPVApplication::MainApplication->OutputWindow->FlushErrors(cerr);
  abort();
}

