//+------------------------------------------------------------------+
//|                                                   Supertrend.mq4 |
//|                   Copyright © 2005, Jason Robinson (jnrtrading). |
//|                                      http://www.jnrtrading.co.uk |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, Jason Robinson (jnrtrading)."
#property link      "http://www.jnrtrading.co.uk"
#property link ""
#property version   "1.00"
#property strict
//---
#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 MediumSpringGreen
#property indicator_color2 Red
//---
double TrendUp[];
double TrendDown[];
double NonTrend[];
//---
int st=0;
//---
int UpDownShift;
//---
extern int TrendCCI_Period=14;
extern bool Automatic_Timeframe_setting;
extern int M1_CCI_Period = 14;
extern int M5_CCI_Period = 14;
extern int M15_CCI_Period = 14;
extern int M30_CCI_Period = 14;
extern int H1_CCI_Period = 14;
extern int H4_CCI_Period = 14;
extern int D1_CCI_Period = 14;
extern int W1_CCI_Period = 14;
extern int MN_CCI_Period = 14;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   SetIndexStyle(0,DRAW_LINE,0,2);
   SetIndexBuffer(0,TrendUp);
   SetIndexStyle(1,DRAW_LINE,0,2);
   SetIndexBuffer(1,TrendDown);
//---
   switch(Period())
     {
      case 1:     UpDownShift = 3; break;
      case 5:     UpDownShift = 5; break;
      case 15:    UpDownShift = 7; break;
      case 30:    UpDownShift = 9; break;
      case 60:    UpDownShift = 20; break;
      case 240:   UpDownShift = 35; break;
      case 1440:  UpDownShift = 40; break;
      case 10080: UpDownShift = 100; break;
      case 43200: UpDownShift = 120; break;
     }
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//---- 
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   int limit,i,cciPeriod;
   double cciTrendNow,cciTrendPrevious;
//---
   int counted_bars=IndicatorCounted();
//---- check for possible errors
   if(counted_bars < 0) return(-1);
//---- last counted bar will be recounted
   if(counted_bars>0) counted_bars--;
//---
   limit=Bars-counted_bars;
//---
   if(Automatic_Timeframe_setting==true)
     {
      switch(Period())
        {
         case 1:     cciPeriod = M1_CCI_Period; break;
         case 5:     cciPeriod = M5_CCI_Period; break;
         case 15:    cciPeriod = M15_CCI_Period; break;
         case 30:    cciPeriod = M30_CCI_Period; break;
         case 60:    cciPeriod = H1_CCI_Period; break;
         case 240:   cciPeriod = H4_CCI_Period; break;
         case 1440:  cciPeriod = D1_CCI_Period; break;
         case 10080: cciPeriod = W1_CCI_Period; break;
         case 43200: cciPeriod = MN_CCI_Period; break;
        }
     }
   else
     {
      cciPeriod=TrendCCI_Period;
     }
//---
   SetIndexLabel(0,("TrendUp "+(string)cciPeriod));
   SetIndexLabel(1,("TrendDown "+(string)cciPeriod));
   for(i=limit-2; i>=0; i--)
     {
      //---
      cciTrendNow=iCCI(NULL,0,cciPeriod,PRICE_TYPICAL,i)+70;
      cciTrendPrevious=iCCI(NULL,0,cciPeriod,PRICE_TYPICAL,i+1)+70;
      //---
      if(cciTrendNow>st && cciTrendPrevious<st)
        {
         TrendUp[i+1]=TrendDown[i+1];
        }
      //---
      if(cciTrendNow<st && cciTrendPrevious>st)
        {
         TrendDown[i+1]=TrendUp[i+1];
        }
      //---
      if(cciTrendNow>0)
        {
         TrendUp[i]=Low[i]-Point*UpDownShift;
         TrendDown[i]=EMPTY_VALUE;
         if(Close[i]<Open[i] && TrendDown[i+1]!=TrendUp[i+1])
           {
            TrendUp[i]=TrendUp[i+1];
           }
         if(TrendUp[i]<TrendUp[i+1] && TrendDown[i+1]!=TrendUp[i+1])
           {
            TrendUp[i]=TrendUp[i+1];
           }
         if(High[i]<High[i+1] && TrendDown[i+1]!=TrendUp[i+1])
           {
            TrendUp[i]=TrendUp[i+1];
           }
        }
      else if(cciTrendNow<0)
        {
         TrendDown[i]=High[i]+Point*UpDownShift;
         TrendUp[i]=EMPTY_VALUE;
         if(Close[i]>Open[i] && TrendDown[i+1]!=TrendUp[i+1])
           {
            TrendDown[i]=TrendDown[i+1];
           }
         if(TrendDown[i]>TrendDown[i+1] && TrendDown[i+1]!=TrendUp[i+1])
           {
            TrendDown[i]=TrendDown[i+1];
           }
         if(Low[i]>Low[i+1] && TrendUp[i+1]!=TrendDown[i+1])
           {
            TrendDown[i]=TrendDown[i+1];
           }
        }
     }
//----
   return(0);
  }
//+------------------------------------------------------------------+