forked from rosh/MQL5Book
152 lines
5.3 KiB
MQL5
152 lines
5.3 KiB
MQL5
//+------------------------------------------------------------------+
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//| PositionMonitor.mqh |
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//| Copyright 2022, MetaQuotes Ltd. |
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//| https://www.mql5.com |
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//+------------------------------------------------------------------+
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#include "TradeBaseMonitor.mqh"
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#include "MqlError.mqh"
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//+------------------------------------------------------------------+
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//| Stateless class with special handling of position properties |
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//| SUPER should be MonitorInterface<ENUM_POSITION_PROPERTY_INTEGER, |
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//| ENUM_POSITION_PROPERTY_DOUBLE,ENUM_POSITION_PROPERTY_STRING> |
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//+------------------------------------------------------------------+
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template<typename SUPER>
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class PositionMonitorInterface: public SUPER
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{
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// NB: MQL5 does not support yet typedefs except for function pointers
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// typedef MonitorInterface<ENUM_POSITION_PROPERTY_INTEGER,ENUM_POSITION_PROPERTY_DOUBLE,ENUM_POSITION_PROPERTY_STRING> super;
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// could use define instead
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// #define SUPER MonitorInterface<ENUM_POSITION_PROPERTY_INTEGER,ENUM_POSITION_PROPERTY_DOUBLE,ENUM_POSITION_PROPERTY_STRING>
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public:
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// explain properties according to subtypes
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virtual string stringify(const long v, const ENUM_POSITION_PROPERTY_INTEGER property) const override
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{
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switch(property)
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{
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case POSITION_TYPE:
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return enumstr<ENUM_POSITION_TYPE>(v);
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case POSITION_REASON:
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return enumstr<ENUM_POSITION_REASON>(v);
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case POSITION_TIME:
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case POSITION_TIME_UPDATE:
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return TimeToString(v, TIME_DATE|TIME_SECONDS);
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case POSITION_TIME_MSC:
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case POSITION_TIME_UPDATE_MSC:
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return STR_TIME_MSC(v);
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}
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return (string)v;
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}
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virtual string stringify(const ENUM_POSITION_PROPERTY_DOUBLE property, const string format = NULL) const override
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{
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if(format == NULL)
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{
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if(property == POSITION_PRICE_OPEN || property == POSITION_PRICE_CURRENT
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|| property == POSITION_SL || property == POSITION_TP)
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{
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const int digits = (int)SymbolInfoInteger(PositionGetString(POSITION_SYMBOL), SYMBOL_DIGITS);
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return DoubleToString(get(property), digits);
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}
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else if(property == POSITION_SWAP || property == POSITION_PROFIT)
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{
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return SUPER::stringify(property, "%.2f");
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}
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}
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return SUPER::stringify(property, format);
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}
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// all the following methods are required to eliminate compiler warning:
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// deprecated behavior, hidden method calling will be disabled in a future MQL compiler version
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virtual string stringify(const ENUM_POSITION_PROPERTY_INTEGER property) const override
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{
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return SUPER::stringify(property);
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}
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virtual string stringify(const ENUM_POSITION_PROPERTY_STRING property) const override
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{
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return SUPER::stringify(property);
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}
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virtual string stringify(const int i) const override
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{
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return SUPER::stringify(i);
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}
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};
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//+------------------------------------------------------------------+
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//| Main class for reading position properties |
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//+------------------------------------------------------------------+
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class PositionMonitor:
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public PositionMonitorInterface<MonitorInterface<ENUM_POSITION_PROPERTY_INTEGER,
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ENUM_POSITION_PROPERTY_DOUBLE,ENUM_POSITION_PROPERTY_STRING>>
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{
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public:
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const ulong ticket;
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PositionMonitor(const ulong t): ticket(t)
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{
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if(!PositionSelectByTicket(ticket))
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{
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PrintFormat("Error: PositionSelectByTicket(%lld) failed: %s", ticket, E2S(_LastError));
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}
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else
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{
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ready = true;
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}
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}
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virtual bool refresh() override
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{
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ready = PositionSelectByTicket(ticket);
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return ready;
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}
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virtual long get(const ENUM_POSITION_PROPERTY_INTEGER property) const override
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{
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return PositionGetInteger(property);
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}
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virtual double get(const ENUM_POSITION_PROPERTY_DOUBLE property) const override
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{
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return PositionGetDouble(property);
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}
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virtual string get(const ENUM_POSITION_PROPERTY_STRING property) const override
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{
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return PositionGetString(property);
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}
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virtual long get(const int property, const long) const override
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{
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return PositionGetInteger((ENUM_POSITION_PROPERTY_INTEGER)property);
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}
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virtual double get(const int property, const double) const override
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{
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return PositionGetDouble((ENUM_POSITION_PROPERTY_DOUBLE)property);
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}
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virtual string get(const int property, const string) const override
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{
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return PositionGetString((ENUM_POSITION_PROPERTY_STRING)property);
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}
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};
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//+------------------------------------------------------------------+
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//| Script program start function |
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//+------------------------------------------------------------------+
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/* example
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void OnStart()
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{
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PositionMonitor m(0);
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m.list2log<ENUM_POSITION_PROPERTY_INTEGER>();
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m.list2log<ENUM_POSITION_PROPERTY_DOUBLE>();
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m.list2log<ENUM_POSITION_PROPERTY_STRING>();
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}
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*/
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//+------------------------------------------------------------------+
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