#include <stdio.h>
#include <stdlib.h>
#include <iostream>
#include <fstream>
#include <string>

#include <TApplication.h>
#include <TCanvas.h>
#include <TF1.h>
#include <TG3DLine.h>
#include <TGButton.h> 
#include <TGButtonGroup.h>
#include <TGClient.h>
#include <TGFrame.h> 
#include <TGNumberEntry.h> 
#include <TGLabel.h>
#include <TGLayout.h>
#include <TGWindow.h> 
#include <TH1.h>
#include <TMultiGraph.h>
#include <TRandom.h> 
#include <TRootEmbeddedCanvas.h>
#include <TROOT.h>
#include <TSystem.h>
#include <TString.h>
#include <RQ_OBJECT.h>


class MyMainFrame : public TGMainFrame { 
  RQ_OBJECT("MyMainFrame") 

private: 
  TGCompositeFrame    *fDates;
  TGTextButton        *fExit;
  TRootEmbeddedCanvas *fEcanvas;
  TGNumberEntry       *neDateSt, *neDateEn; 
  TGLabel             *label1, *label2;
     
public: 
  MyMainFrame(const TGWindow *p,UInt_t w,UInt_t h); 
  virtual ~MyMainFrame(); 
  void DoDraw(); 
  void DoSetValue1();
  void DoSetValue2();
  
  ClassDef(MyMainFrame, 0);
};


  //Global Variables
  long date_st, date_en;
  
  
//____________________________________________________________________________
MyMainFrame::MyMainFrame(const TGWindow *p, UInt_t w, UInt_t h) 
   : TGMainFrame(p, w, h)
{ 
  
  //Create a vertical frame widget with beginning / end buttons
  TGHorizontalFrame *fDates = new TGHorizontalFrame(this,200,600);
  AddFrame(fDates, new TGLayoutHints(kLHintsCenterX,2,2,2,2));
    

  //Create Date Start button
  TGNumberEntry *neDateSt = new TGNumberEntry(fDates, 1, 8, 11, 
                                              TGNumberFormat::kNESInteger,
                                              TGNumberFormat::kNEANonNegative, 
                                              TGNumberFormat::kNELLimitMinMax,
                                              0, 100);
  fDates->AddFrame(neDateSt, new TGLayoutHints(kLHintsLeft,5,5,3,3));
  neDateSt->Connect("ValueSet(Long_t)", "MyMainFrame", this, "DoSetValue1()");
  
  
  //Create Date End button
  TGNumberEntry *neDateEn = new TGNumberEntry(fDates, 20, 8, 21, 
                                              TGNumberFormat::kNESInteger,
                                              TGNumberFormat::kNEANonNegative, 
                                              TGNumberFormat::kNELLimitMinMax,
                                              0, 100);
  fDates->AddFrame(neDateEn, new TGLayoutHints(kLHintsLeft,5,5,3,3));
  cout<<"date_en = "<<date_en<<";"<<endl;
  neDateEn->Connect("ValueSet(Long_t)", "MyMainFrame", this, "DoSetValue2()");






  // Create PLOT SREM data button
  TGTextButton *plot_button = new TGTextButton(fDates,"&Plot SREM data"); 
  plot_button->Connect("Clicked()","MyMainFrame",this,"DoDraw()");
  fDates->AddFrame(plot_button, new TGLayoutHints(kLHintsCenterX,5,5,3,4));


  // Create canvas widget 
  fEcanvas = new TRootEmbeddedCanvas("Ecanvas",this,900,400);
  AddFrame(fEcanvas, new TGLayoutHints(kLHintsExpandX| kLHintsExpandY, 10,10,10,1)); 
  
  
  
  
  // Create a horizontal frame widget with buttons  
  TGHorizontalFrame *hframe = new TGHorizontalFrame(this,900,600); 
  TGTextButton *draw = new TGTextButton(hframe,"&Draw"); 
  draw->Connect("Clicked()","MyMainFrame",this,"DoDraw()");
  hframe->AddFrame(draw, new TGLayoutHints(kLHintsCenterX,5,5,3,4)); 
  TGTextButton *exit = new TGTextButton(hframe,"&Exit", "gApplication->Terminate(0)"); 
  hframe->AddFrame(exit, new TGLayoutHints(kLHintsCenterX,5,5,3,4)); 
  AddFrame(hframe, new TGLayoutHints(kLHintsCenterX,2,2,2,2)); 
  


  // Set a name to the main frame
  SetWindowName("SREM data"); 
  


  // Map all subwindows of main frame
  MapSubwindows(); 
  


  // Initialize the layout algorithm
  Resize(this->GetDefaultSize()); 
  SetCleanup(kDeepCleanup);


  // Map main frame
  MapWindow(); 
} 



//____________________________________________________________________________
void MyMainFrame::DoSetValue1() {

  date_st = neDateSt->GetNumberEntry()->GetIntNumber();
  //date_st = 1;
  cout<<"\n\nDoSetValue1 is executed!!!!!!!!!!!!!!\n\n";
  cout<<"date_st = "<<date_st<<";"<<endl;
    
} 

//____________________________________________________________________________
void MyMainFrame::DoSetValue2() {

  date_en = neDateEn->GetNumberEntry()->GetIntNumber();
  //date_en = 15;
  cout<<"\n\nDoSetValue2 is executed!!!!!!!!!!!!!!\n\n";
  cout<<"date_en = "<<date_en<<";"<<endl;
    
} 


//____________________________________________________________________________
void MyMainFrame::DoDraw() { 
  // Plots data
  
  
 
  cout<<"\ndate_start_int = "<<date_st<<";"<<endl;
  cout<<"date_end_int   = "<<date_en<<";"<<endl;
  
  
  TF1 *f1 = new TF1("f1","sin(x)/x",date_st,date_en); 
  f1->SetFillColor(19); 
  f1->SetFillStyle(1); 
  f1->SetLineWidth(3); 
  f1->Draw(); 
  TCanvas *fCanvas = fEcanvas->GetCanvas(); 
  fCanvas->cd(); 
  fCanvas->Update(); 
} 



//____________________________________________________________________________
MyMainFrame::~MyMainFrame() { 
  // Clean up used widgets: frames, buttons, layouthints
  Cleanup(); 

} 



//____________________________________________________________________________
void example_ex() { 
  // Popup the GUI...
  
  new MyMainFrame(gClient->GetRoot(),1200,1000); 
}