//+------------------------------------------------------------------+
//|                                                   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 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 cciTrendNow14, cciTrendPrevious14, 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;
   }
   /*switch(cciPeriod) {
      case 14:  break;
   }*/
   //cciPeriod = TrendCCI_Period;
   SetIndexLabel(0, ("TrendUp " + cciPeriod));
   SetIndexLabel(1, ("TrendDown " + cciPeriod));
   for(i = limit; i >= 0; i--) {
   
      cciTrendNow = iCCI(NULL, 0, cciPeriod, PRICE_TYPICAL, i) + 70;
      cciTrendPrevious = iCCI(NULL, 0, cciPeriod, PRICE_TYPICAL, i+1) + 70;
      //cciTrendNow50 = iCCI(NULL, 0, 50, PRICE_TYPICAL, i) + 70;
      //cciTrendPrevious50 = iCCI(NULL, 0, 50, PRICE_TYPICAL, i+1) + 70;
      
      if (cciTrendNow > st && cciTrendPrevious < st) {
         TrendUp[i+1] = TrendDown[i+1];
         //TrendDown[i] = EMPTY_VALUE;
      }
      
      if (cciTrendNow < st && cciTrendPrevious > st) {
         TrendDown[i+1] = TrendUp[i+1];
         //TrendUp[i] = EMPTY_VALUE;
      }
      
      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);
  }
//+------------------------------------------------------------------+