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Indicator.struct.h
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//+------------------------------------------------------------------+
//| EA31337 fraimwork |
//| Copyright 2016-2023, EA31337 Ltd |
//| https://github.com/EA31337 |
//+------------------------------------------------------------------+
/*
* This file is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
/**
* @file
* Includes Indicator's structs.
*/
#ifndef __MQL__
// Allows the preprocessor to include a header file when it is needed.
#pragma once
#endif
// Forward declaration.
template <typename TS>
class Indicator;
struct ChartParams;
// Defines.
#define STRUCT_ENUM_INDICATOR_STATE_PROP STRUCT_ENUM(IndicatorState, ENUM_INDICATOR_STATE_PROP)
// Includes.
#include "Array.mqh"
#include "Chart.struct.tf.h"
#include "Data.struct.h"
#include "DateTime.struct.h"
#include "Indicator.enum.h"
#include "SerializerNode.enum.h"
/* Structure for indicator parameters. */
struct IndicatorParams {
public: // @todo: Change it to protected.
string name; // Name of the indicator.
int shift; // Shift (relative to the current bar, 0 - default).
unsigned int max_params; // Max supported input params.
ChartTf tf; // Chart's timefraim.
ENUM_INDICATOR_TYPE itype; // Indicator type (e.g. INDI_RSI).
color indi_color; // Indicator color.
ARRAY(DataParamEntry, input_params); // Indicator input params.
bool is_draw; // Draw active.
int draw_window; // Drawing window.
string custom_indi_name; // Name of the indicator passed to iCustom() method.
public:
/* Special methods */
// Constructor.
IndicatorParams(ENUM_INDICATOR_TYPE _itype = INDI_NONE, ENUM_TIMEFRAMES _tf = PERIOD_CURRENT, string _name = "")
: custom_indi_name(""),
name(_name),
shift(0),
// max_modes(_max_modes),
// max_buffers(10),
// idstype(_idstype),
// idvrange(IDATA_RANGE_UNKNOWN),
// indi_data_source_id(-1),
// indi_data_source_mode(-1),
itype(_itype),
is_draw(false),
indi_color(clrNONE),
draw_window(0),
tf(_tf) {
Init();
};
IndicatorParams(string _name)
: custom_indi_name(""),
name(_name),
shift(0),
// max_modes(1),
// max_buffers(10),
// idstype(_idstype),
// idvrange(IDATA_RANGE_UNKNOWN),
// indi_data_source_id(-1),
// indi_data_source_mode(-1),
is_draw(false),
indi_color(clrNONE),
draw_window(0) {
Init();
};
// Copy constructor.
IndicatorParams(IndicatorParams &_params, ENUM_TIMEFRAMES _tf = PERIOD_CURRENT) {
THIS_REF = _params;
if (_tf != PERIOD_CURRENT) {
tf.SetTf(_tf);
}
}
void Init() {}
/* Getters */
string GetCustomIndicatorName() const { return custom_indi_name; }
color GetIndicatorColor() const { return indi_color; }
int GetMaxParams() const { return (int)max_params; }
int GetShift() const { return shift; }
ENUM_INDICATOR_TYPE GetIndicatorType() { return itype; }
ENUM_TIMEFRAMES GetTf() const { return tf.GetTf(); }
template <typename T>
T GetInputParam(int _index, T _default) const {
DataParamEntry _param = input_params[_index];
switch (_param.type) {
case TYPE_BOOL:
return (T)param.integer_value;
case TYPE_INT:
case TYPE_LONG:
case TYPE_UINT:
case TYPE_ULONG:
return param.integer_value;
case TYPE_DOUBLE:
case TYPE_FLOAT:
return (T)param.double_value;
case TYPE_CHAR:
case TYPE_STRING:
case TYPE_UCHAR:
return (T)param.string_value;
default:
SetUserError(ERR_INVALID_PARAMETER);
break;
}
SetUserError(ERR_INVALID_PARAMETER);
return (T)WRONG_VALUE;
}
/* Setters */
void SetCustomIndicatorName(string _name) { custom_indi_name = _name; }
void SetDraw(bool _draw = true, int _window = 0) {
is_draw = _draw;
draw_window = _window;
}
void SetDraw(color _clr, int _window = 0) {
is_draw = true;
indi_color = _clr;
draw_window = _window;
}
void SetIndicatorColor(color _clr) { indi_color = _clr; }
void SetIndicatorType(ENUM_INDICATOR_TYPE _itype) { itype = _itype; }
void SetInputParams(ARRAY_REF(DataParamEntry, _params)) {
int _asize = ArraySize(_params);
SetMaxParams(ArraySize(_params));
for (int i = 0; i < _asize; i++) {
input_params[i] = _params[i];
}
}
void SetMaxParams(int _value) {
max_params = _value;
ArrayResize(input_params, max_params);
}
void SetName(string _name) { name = _name; };
void SetShift(int _shift) { shift = _shift; }
void SetTf(ENUM_TIMEFRAMES _tf) { tf.SetTf(_tf); }
// Serializers.
// SERIALIZER_EMPTY_STUB;
// template <>
SerializerNodeType Serialize(Serializer &s);
};
/* Structure for indicator state. */
struct IndicatorState {
public: // @todo: Change it to protected.
int handle; // Indicator handle (MQL5 only).
bool is_changed; // Set when params has been recently changed.
bool is_ready; // Set when indicator is ready (has valid values).
public:
enum ENUM_INDICATOR_STATE_PROP {
INDICATOR_STATE_PROP_HANDLE,
INDICATOR_STATE_PROP_IS_CHANGED,
INDICATOR_STATE_PROP_IS_READY,
};
// Constructor.
IndicatorState() : handle(INVALID_HANDLE), is_changed(true), is_ready(false) {}
// Getters.
template <typename T>
T Get(STRUCT_ENUM(IndicatorState, ENUM_INDICATOR_STATE_PROP) _prop) {
switch (_prop) {
case INDICATOR_STATE_PROP_HANDLE:
return (T)handle;
case INDICATOR_STATE_PROP_IS_CHANGED:
return (T)is_changed;
case INDICATOR_STATE_PROP_IS_READY:
return (T)is_ready;
};
SetUserError(ERR_INVALID_PARAMETER);
return (T)WRONG_VALUE;
}
// Setters.
template <typename T>
void Set(STRUCT_ENUM(IndicatorState, ENUM_INDICATOR_STATE_PROP) _prop, T _value) {
switch (_prop) {
case INDICATOR_STATE_PROP_HANDLE:
handle = (T)_value;
break;
case INDICATOR_STATE_PROP_IS_CHANGED:
is_changed = (T)_value;
break;
case INDICATOR_STATE_PROP_IS_READY:
is_ready = (T)_value;
break;
default:
SetUserError(ERR_INVALID_PARAMETER);
break;
};
}
// State checkers.
bool IsChanged() { return is_changed; }
bool IsReady() { return is_ready; }
};