HelpMenu.cxx

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#include "EventDisplayBase/HelpMenu.h"
#include <cstdlib>
#include <string>
#include <iostream>
#include "TROOT.h"
#include "TSystem.h"
#include "TGMsgBox.h"
#include "TGMenu.h"
#include "TGLayout.h"
#include "evdb.h"
using namespace evdb;

// Define ID codes for the actions on the file menu
enum {
  kM_HELP_CONTENTS,
  kM_HELP_RELEASENOTES,
  kM_HELP_ABOUT
};

//......................................................................

HelpMenu::HelpMenu(TGMenuBar* menubar, TGMainFrame* mf) :
  fMainFrame(mf)
{
//======================================================================
// Build the help menu
//======================================================================
  fHelpMenu = new TGPopupMenu(gClient->GetRoot());
  fLayout   = new TGLayoutHints(kLHintsTop | kLHintsLeft, 0, 4, 0, 0);

  // Create the list of functions. Associate each which a command code
  fHelpMenu->AddEntry("&Contents",      kM_HELP_CONTENTS);
  fHelpMenu->AddEntry("&Release Notes", kM_HELP_RELEASENOTES);
  fHelpMenu->AddSeparator();
  fHelpMenu->AddEntry("&About",         kM_HELP_ABOUT);

  fHelpMenu->Connect("Activated(Int_t)",
                     "evdb::HelpMenu",this,"HandleMenu(int)");
  
  // Attach the menu to the menu bar
  menubar->AddPopup("&Help",fHelpMenu,fLayout);
}

//......................................................................

HelpMenu::~HelpMenu() 
{
//======================================================================
// Delete the help menu
//======================================================================
  if (fLayout)   { delete fLayout;   fLayout   = 0; }
  if (fHelpMenu) { delete fHelpMenu; fHelpMenu = 0; }
}

//......................................................................

void HelpMenu::HandleMenu(int menu) 
{
//======================================================================
// Take care of menu events
//======================================================================
  switch(menu) {
  case kM_HELP_CONTENTS:     this->Contents();     break;
  case kM_HELP_RELEASENOTES: this->ReleaseNotes(); break;
  case kM_HELP_ABOUT:        this->About();        break;
  default: this->NoImpl("??"); break;
  }
}

//......................................................................

int HelpMenu::Contents() 
{
//======================================================================
// Start a help browser
//======================================================================
  this->NoImpl("Contents");
  return 0;
}

//......................................................................

int HelpMenu::ReleaseNotes() 
{
//======================================================================
// Print information about this release of the event display
//======================================================================
  const char* releaseNotes = "This is a pre-release version of event display";
  new TGMsgBox(evdb::TopWindow(), evdb::TopWindow(),
               "Release notes",releaseNotes,kMBIconExclamation);
  return 0;
}

//......................................................................

int HelpMenu::About() 
{
//======================================================================
// Pop open a window containing information about versions of things
// used in the event display.
//======================================================================
  std::string about;
  
  about =  "MIPP Event Display\n\n";

  about += "  Version: "; 
  about += "$Id: HelpMenu.cxx,v 1.1 2007/02/09 04:44:13 fmwk Exp $";
  about += "\n";

  about += "  ";
  about += gSystem->GetBuildArch();
  about += "\n";

  about += "  ";
  about += gSystem->GetBuildNode();
  about += "\n";

  about += "  Based on ROOT version: ";
  about += gROOT->GetVersion();
  about += "\n";
  
  new TGMsgBox(evdb::TopWindow(), fMainFrame,
               "Release notes",about.c_str(),kMBIconExclamation);
  return 0;
}

//......................................................................

int HelpMenu::NoImpl(const char* method) 
{
  std::string s;
  s = "Sorry action '"; s += method; s+= "' is not implemented.\n";
  // Why isn't this a memory leak? Dunno, but its seems the TG classes
  // are all managed by TGClient which takes care of deletion
  new TGMsgBox(evdb::TopWindow(), fMainFrame,
               "No implementation",s.c_str(),kMBIconExclamation);
  return 0;
}

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