kicad/include/property.h

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2020 CERN
* @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
* @author Maciej Suminski <maciej.suminski@cern.ch>
*
* This program 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/>.
*/
#ifndef PROPERTY_H
#define PROPERTY_H
#include <wx/any.h>
#include <wx/string.h>
#include <wx/bitmap.h>
#include <wx/propgrid/property.h>
#include <functional>
#include <map>
#include <memory>
#include <typeindex>
#include <type_traits>
class wxPGProperty;
class INSPECTABLE;
class PROPERTY_BASE;
template<typename T>
class ENUM_MAP;
///> Common property types
enum PROPERTY_DISPLAY
{
DEFAULT, ///< Default property for a given type
DISTANCE, ///< Display value expressed in distance units (mm/inch)
DEGREE, ///< Display value expressed in degrees
DECIDEGREE ///< Convert decidegrees to degrees for display
};
///> Macro to generate unique identifier for a type
#define TYPE_HASH( x ) typeid( x ).hash_code()
#define TYPE_NAME( x ) typeid( x ).name()
//#define TYPE_HASH( x ) typeid( std::decay<x>::type ).hash_code()
template<typename Owner, typename T>
class GETTER_BASE
{
public:
virtual ~GETTER_BASE() {}
virtual T operator()( Owner* aOwner ) const = 0;
};
template<typename Owner, typename T, typename FuncType>
class GETTER : public GETTER_BASE<Owner, T>
{
public:
GETTER( FuncType aFunc )
: m_func( aFunc )
{
}
T operator()( Owner* aOwner ) const override
{
return ( aOwner->*m_func )();
}
private:
FuncType m_func;
};
template<typename Owner, typename T>
class SETTER_BASE
{
public:
virtual ~SETTER_BASE() {}
virtual void operator()( Owner* aOwner, T aValue ) = 0;
};
template<typename Owner, typename T, typename FuncType>
class SETTER : public SETTER_BASE<Owner, T>
{
public:
SETTER( FuncType aFunc )
: m_func( aFunc )
{
}
void operator()( Owner* aOwner, T aValue ) override
{
wxCHECK( m_func, /*void*/ );
( aOwner->*m_func )( aValue );
}
private:
FuncType m_func;
};
template<typename Owner, typename T, typename Base = Owner>
class METHOD
{
public:
constexpr static GETTER_BASE<Owner, T>* Wrap( T (Base::*aFunc)() )
{
return new GETTER<Owner, T, T (Base::*)()>( aFunc );
}
constexpr static GETTER_BASE<Owner, T>* Wrap( const T (Base::*aFunc)() )
{
return new GETTER<Owner, T, T (Base::*)()>( aFunc );
}
constexpr static GETTER_BASE<Owner, T>* Wrap( const T& (Base::*aFunc)() )
{
return new GETTER<Owner, T, const T& (Base::*)()>( aFunc );
}
constexpr static GETTER_BASE<Owner, T>* Wrap( T (Base::*aFunc)() const )
{
return new GETTER<Owner, T, T (Base::*)() const>( aFunc );
}
constexpr static GETTER_BASE<Owner, T>* Wrap( const T (Base::*aFunc)() const )
{
return new GETTER<Owner, T, const T (Base::*)() const>( aFunc );
}
constexpr static GETTER_BASE<Owner, T>* Wrap( const T& (Base::*aFunc)() const )
{
return new GETTER<Owner, T, const T& (Base::*)() const>( aFunc );
}
constexpr static SETTER_BASE<Owner, T>* Wrap( void (Base::*aFunc)( T ) )
{
return aFunc ? new SETTER<Owner, T, void (Base::*)( T )>( aFunc ) : nullptr;
}
constexpr static SETTER_BASE<Owner, T>* Wrap( void (Base::*aFunc)( T& ) )
{
return aFunc ? new SETTER<Owner, T, void (Base::*)( T& )>( aFunc ) : nullptr;
}
constexpr static SETTER_BASE<Owner, T>* Wrap( void (Base::*aFunc)( const T& ) )
{
return aFunc ? new SETTER<Owner, T, void (Base::*)( const T& )>( aFunc ) : nullptr;
}
METHOD() = delete;
};
class PROPERTY_BASE
{
private:
///> Used to generate unique IDs
size_t nextId = 0;
public:
PROPERTY_BASE( const wxString& aName, PROPERTY_DISPLAY aDisplay = DEFAULT ) :
m_id( nextId ),
m_name( aName ),
m_display( aDisplay ),
m_availFunc( [](INSPECTABLE*)->bool { return true; } )
{
++nextId;
}
virtual ~PROPERTY_BASE()
{
}
const wxString& Name() const
{
return m_name;
}
/**
* Returns a limited set of possible values (e.g. enum). Check with HasChoices() if a particular
* PROPERTY provides such set.
*/
virtual const wxPGChoices& Choices() const
{
static wxPGChoices empty;
return empty;
}
/**
* Sets the possible values for for the property.
*/
virtual void SetChoices( const wxPGChoices& aChoices )
{
wxFAIL; // only possible for PROPERTY_ENUM
}
/**
* Returns true if this PROPERTY has a limited set of possible values.
* @see PROPERTY_BASE::Choices()
*/
virtual bool HasChoices() const
{
return false;
}
/**
* Returns true if aObject offers this PROPERTY.
*/
bool Available( INSPECTABLE* aObject ) const
{
return m_availFunc( aObject );
}
/**
* Sets a callback function to determine whether an object provides this property.
*/
void SetAvailableFunc( std::function<bool(INSPECTABLE*)> aFunc )
{
m_availFunc = aFunc;
}
/**
* Returns type-id of the Owner class.
*/
virtual size_t OwnerHash() const = 0;
/**
* Returns type-id of the Base class.
*/
virtual size_t BaseHash() const = 0;
/**
* Returns type-id of the property type.
*/
virtual size_t TypeHash() const = 0;
/**
* Returns unique ID of the property.
*/
size_t Id() const
{
return m_id;
}
virtual bool IsReadOnly() const = 0;
PROPERTY_DISPLAY GetDisplay() const
{
return m_display;
}
protected:
template<typename T>
void set( void* aObject, T aValue )
{
wxAny a = aValue;
setter( aObject, a );
}
template<typename T>
T get( void* aObject )
{
wxAny a = getter( aObject );
if ( !( std::is_enum<T>::value && a.CheckType<int>() ) && !a.CheckType<T>() )
throw std::invalid_argument("Invalid requested type");
return wxANY_AS(a, T);
}
virtual void setter( void* aObject, wxAny& aValue ) = 0;
virtual wxAny getter( void* aObject ) const = 0;
private:
const size_t m_id;
const wxString m_name;
const PROPERTY_DISPLAY m_display;
///> Condition that determines whether the property is available
std::function<bool(INSPECTABLE*)> m_availFunc;
friend class INSPECTABLE;
};
template<typename Owner, typename T, typename Base = Owner>
class PROPERTY : public PROPERTY_BASE
{
public:
typedef typename std::decay<T>::type BASE_TYPE;
typedef void (Base::*SETTER)( T );
template<typename SetType, typename GetType>
PROPERTY( const wxString& aName,
void ( Base::*aSetter )( SetType ), GetType( Base::*aGetter )(),
PROPERTY_DISPLAY aDisplay = DEFAULT )
: PROPERTY( aName, METHOD<Owner, T, Base>::Wrap( aSetter ),
METHOD<Owner, T, Base>::Wrap( aGetter ), aDisplay )
{
}
template<typename SetType, typename GetType>
PROPERTY( const wxString& aName,
void ( Base::*aSetter )( SetType ), GetType( Base::*aGetter )() const,
PROPERTY_DISPLAY aDisplay = DEFAULT )
: PROPERTY( aName, METHOD<Owner, T, Base>::Wrap( aSetter ),
METHOD<Owner, T, Base>::Wrap( aGetter ), aDisplay )
{
}
size_t OwnerHash() const override
{
return m_ownerHash;
}
size_t BaseHash() const override
{
return m_baseHash;
}
size_t TypeHash() const override
{
return m_typeHash;
}
bool IsReadOnly() const override
{
return !m_setter;
}
protected:
PROPERTY( const wxString& aName, SETTER_BASE<Owner, T>* s, GETTER_BASE<Owner, T>* g,
PROPERTY_DISPLAY aDisplay )
: PROPERTY_BASE( aName, aDisplay ), m_setter( s ), m_getter( g ),
m_ownerHash( TYPE_HASH( Owner ) ), m_baseHash( TYPE_HASH( Base ) ),
m_typeHash( TYPE_HASH( BASE_TYPE ) )
{
}
virtual ~PROPERTY() {}
virtual void setter( void* obj, wxAny& v ) override
{
wxCHECK( !IsReadOnly(), /*void*/ );
if( !v.CheckType<T>() )
throw std::invalid_argument( "Invalid type requested" );
Owner* o = reinterpret_cast<Owner*>( obj );
BASE_TYPE value = wxANY_AS(v, BASE_TYPE);
(*m_setter)( o, value );
}
virtual wxAny getter( void* obj ) const override
{
Owner* o = reinterpret_cast<Owner*>( obj );
wxAny res = (*m_getter)( o );
return res;
}
///> Set method
std::unique_ptr<SETTER_BASE<Owner, T>> m_setter;
///> Get method
std::unique_ptr<GETTER_BASE<Owner, T>> m_getter;
///> Owner class type-id
const size_t m_ownerHash;
///> Base class type-id
const size_t m_baseHash;
///> Property value type-id
const size_t m_typeHash;
};
template<typename Owner, typename T, typename Base = Owner>
class PROPERTY_ENUM : public PROPERTY<Owner, T, Base>
{
public:
template<typename SetType, typename GetType>
PROPERTY_ENUM( const wxString& aName,
void ( Base::*aSetter )( SetType ), GetType( Base::*aGetter )(),
PROPERTY_DISPLAY aDisplay = PROPERTY_DISPLAY::DEFAULT )
: PROPERTY<Owner, T, Base>( aName, METHOD<Owner, T, Base>::Wrap( aSetter ),
METHOD<Owner, T, Base>::Wrap( aGetter ), aDisplay )
{
if ( std::is_enum<T>::value )
{
m_choices = ENUM_MAP<T>::Instance().Choices();
wxASSERT_MSG( m_choices.GetCount() > 0, "No enum choices defined" );
}
}
template<typename SetType, typename GetType>
PROPERTY_ENUM( const wxString& aName,
void ( Base::*aSetter )( SetType ), GetType( Base::*aGetter )() const,
PROPERTY_DISPLAY aDisplay = PROPERTY_DISPLAY::DEFAULT )
: PROPERTY<Owner, T, Base>( aName, METHOD<Owner, T, Base>::Wrap( aSetter ),
METHOD<Owner, T, Base>::Wrap( aGetter ), aDisplay )
{
if ( std::is_enum<T>::value )
{
m_choices = ENUM_MAP<T>::Instance().Choices();
wxASSERT_MSG( m_choices.GetCount() > 0, "No enum choices defined" );
}
}
virtual void setter( void* obj, wxAny& v ) override
{
wxCHECK( !( PROPERTY<Owner, T, Base>::IsReadOnly() ), /*void*/ );
Owner* o = reinterpret_cast<Owner*>( obj );
if( v.CheckType<T>() )
{
T value = wxANY_AS(v, T);
(*PROPERTY<Owner, T, Base>::m_setter)( o, value );
}
else if (v.CheckType<int>() )
{
int value = wxANY_AS(v, int);
(*PROPERTY<Owner, T, Base>::m_setter)( o, static_cast<T>( value ) );
}
else
{
throw std::invalid_argument( "Invalid type requested" );
}
}
virtual wxAny getter( void* obj ) const override
{
Owner* o = reinterpret_cast<Owner*>( obj );
wxAny res = static_cast<T>( (*PROPERTY<Owner, T, Base>::m_getter)( o ) );
return res;
}
const wxPGChoices& Choices() const override
{
return m_choices;
}
void SetChoices( const wxPGChoices& aChoices ) override
{
m_choices = aChoices;
}
bool HasChoices() const override
{
return m_choices.GetCount() > 0;
}
protected:
wxPGChoices m_choices;
};
class TYPE_CAST_BASE
{
public:
virtual ~TYPE_CAST_BASE() {}
virtual void* operator()( void* aPointer ) const = 0;
virtual const void* operator()( const void* aPointer ) const = 0;
virtual size_t BaseHash() const = 0;
virtual size_t DerivedHash() const = 0;
};
template<typename Base, typename Derived>
class TYPE_CAST : public TYPE_CAST_BASE
{
public:
TYPE_CAST()
{
}
void* operator()( void* aPointer ) const override
{
Base* base = reinterpret_cast<Base*>( aPointer );
return static_cast<Derived*>( base );
}
const void* operator()( const void* aPointer ) const override
{
const Base* base = reinterpret_cast<const Base*>( aPointer );
return static_cast<const Derived*>( base );
}
size_t BaseHash() const override
{
return TYPE_HASH( Base );
}
size_t DerivedHash() const override
{
return TYPE_HASH( Derived );
}
};
template<typename T>
class ENUM_MAP
{
public:
static ENUM_MAP<T>& Instance()
{
static ENUM_MAP<T> inst;
return inst;
}
ENUM_MAP& Map( T aValue, const wxString& aName )
{
m_choices.Add( aName, static_cast<int>( aValue ) );
m_reverseMap[ aName ] = aValue;
return *this;
}
ENUM_MAP& Undefined( T aValue )
{
m_undefined = aValue;
return *this;
}
const wxString& ToString( T value ) const
{
static const wxString s_undef = "UNDEFINED";
int idx = m_choices.Index( static_cast<int>( value ) );
if( idx >= 0 && idx < (int) m_choices.GetCount() )
return m_choices.GetLabel( static_cast<int>( idx ) );
else
return s_undef;
}
const T ToEnum( const wxString value )
{
if( m_reverseMap.count( value ) )
return m_reverseMap[ value ];
else
return m_undefined;
}
wxPGChoices& Choices()
{
return m_choices;
}
private:
wxPGChoices m_choices;
std::unordered_map<wxString, T> m_reverseMap;
T m_undefined; // Returned if the string is not recognized
ENUM_MAP<T>()
{
}
};
// Helper macros to handle enum types
#define DECLARE_ENUM_TO_WXANY(type)\
template<>\
class wxAnyValueTypeImpl<type> : public wxAnyValueTypeImplBase<type>\
{\
WX_DECLARE_ANY_VALUE_TYPE(wxAnyValueTypeImpl<type>)\
public:\
wxAnyValueTypeImpl() : wxAnyValueTypeImplBase<type>() {}\
virtual ~wxAnyValueTypeImpl() {}\
virtual bool ConvertValue( const wxAnyValueBuffer& src,\
wxAnyValueType* dstType, wxAnyValueBuffer& dst ) const override\
{\
type value = GetValue(src);\
ENUM_MAP<type>& conv = ENUM_MAP<type>::Instance();\
if( dstType->CheckType<wxString>() )\
{\
wxAnyValueTypeImpl<wxString>::SetValue( conv.ToString( value ), dst );\
return true;\
}\
if( dstType->CheckType<int>() )\
{\
wxAnyValueTypeImpl<int>::SetValue( static_cast<int>(value), dst );\
return true;\
}\
else\
{\
return false;\
}\
}\
};
#define IMPLEMENT_ENUM_TO_WXANY(type)\
WX_IMPLEMENT_ANY_VALUE_TYPE(wxAnyValueTypeImpl<type>)
#define ENUM_TO_WXANY(type)\
DECLARE_ENUM_TO_WXANY(type)\
IMPLEMENT_ENUM_TO_WXANY(type)
///> Macro to define read-only fields (no setter method available)
#define NO_SETTER(owner, type) ((void (owner::*)(type))nullptr)
/*
#define DECLARE_PROPERTY(owner,type,name,getter,setter) \
namespace anonymous {\
static PROPERTY<owner,type> prop##_owner##_name_( "##name#", setter, getter );\
};
*/
#endif /* PROPERTY_H */