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

  Program:   CMake - Cross-Platform Makefile Generator
  Module:    $RCSfile$
  Language:  C++
  Date:      $Date$
  Version:   $Revision$

  Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
  See Copyright.txt or http://www.cmake.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 notices for more information.

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

// cmFLTKWrapUICommand
bool cmFLTKWrapUICommand::InitialPass(std::vector<std::string> const& args)
{
  if(args.size() < 2 )
    {
    this->SetError("called with incorrect number of arguments");
    return false;
    }

  // Now check and see if the value has been stored in the cache
  // already, if so use that value and don't look for the program
  const char* FLTK_WRAP_UI_value = m_Makefile->GetDefinition("FLTK_WRAP_UI");
  if (FLTK_WRAP_UI_value==0)
    {
    this->SetError("called with FLTK_WRAP_UI undefined");
    return false;
    }
  
  if(cmSystemTools::IsOff(FLTK_WRAP_UI_value))
    {
    this->SetError("called with FLTK_WRAP_UI off : ");
    return false;
    }


  // what is the current source dir
  std::string cdir = m_Makefile->GetCurrentDirectory();
  std::string fluid_exe = "${FLTK_FLUID_EXECUTABLE}";

  // get parameter for the command
  m_Target              = args[0];  // Target that will use the generated files

  std::vector<std::string> newArgs;
  m_Makefile->ExpandSourceListArguments(args,newArgs, 1);
  
  // get the list of GUI files from which .cxx and .h will be generated 
  std::string outputDirectory = m_Makefile->GetCurrentOutputDirectory();

  // Some of the generated files are *.h so the directory "GUI" 
  // where they are created have to be added to the include path
  m_Makefile->AddIncludeDirectory( outputDirectory.c_str() );

  for(std::vector<std::string>::iterator i = (newArgs.begin() + 1); 
      i != newArgs.end(); i++)
    {
    cmSourceFile *curr = m_Makefile->GetSource(i->c_str());
    // if we should use the source GUI 
    // to generate .cxx and .h files
    if (!curr || !curr->GetPropertyAsBool("WRAP_EXCLUDE"))
      {
      cmSourceFile header_file;
      std::string srcName = cmSystemTools::GetFilenameWithoutExtension(*i);
      const bool headerFileOnly = true;
      header_file.SetName(srcName.c_str(), 
                  outputDirectory.c_str(), "h",headerFileOnly);
      std::string origname = cdir + "/" + *i;
      std::string hname   = header_file.GetFullPath();
      // add starting depends
      std::vector<std::string> depends;
      depends.push_back(origname);

      std::string cxxres = outputDirectory.c_str();
      cxxres += "/" + srcName;
      cxxres += ".cxx";
      
      std::vector<std::string> cxxargs;
      cxxargs.push_back("-c"); // instructs Fluid to run in command line
      cxxargs.push_back("-h"); // optionally rename .h files
      cxxargs.push_back(hname);
      cxxargs.push_back("-o"); // optionally rename .cxx files
      cxxargs.push_back(cxxres);
      cxxargs.push_back(origname);// name of the GUI fluid file
      
      // Add command for generating the .h and .cxx files
      m_Makefile->AddCustomCommandToOutput(cxxres.c_str(),
                                           fluid_exe.c_str(),
                                           cxxargs,
                                           0,
                                           depends);
      
      m_Makefile->AddCustomCommandToOutput(hname.c_str(),
                                           fluid_exe.c_str(),
                                           cxxargs,
                                           0,
                                           depends);
                                           
      cmSourceFile *sf = m_Makefile->GetSource(cxxres.c_str());
      sf->GetDepends().push_back(hname);
      sf->GetDepends().push_back(origname);
      m_GeneratedSourcesClasses.push_back(sf);
      }
    }
  
  return true;
}

void cmFLTKWrapUICommand::FinalPass() 
{
  // first we add the rules for all the .fl to .h and .cxx files
  size_t lastHeadersClass = m_GeneratedSourcesClasses.size();

  // Generate code for all the .fl files
  for(size_t classNum = 0; classNum < lastHeadersClass; classNum++)
    {
    m_Makefile->GetTargets()[m_Target].GetSourceFiles().push_back( 
      m_GeneratedSourcesClasses[classNum]);
    }
}



