417 lines
11 KiB
C++
417 lines
11 KiB
C++
/*!
|
||
@file
|
||
@author Albert Semenov
|
||
@date 11/2007
|
||
*/
|
||
/*
|
||
This file is part of MyGUI.
|
||
|
||
MyGUI is free software: you can redistribute it and/or modify
|
||
it under the terms of the GNU Lesser General Public License as published by
|
||
the Free Software Foundation, either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
MyGUI 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 Lesser General Public License for more details.
|
||
|
||
You should have received a copy of the GNU Lesser General Public License
|
||
along with MyGUI. If not, see <http://www.gnu.org/licenses/>.
|
||
*/
|
||
|
||
namespace delegates
|
||
{
|
||
|
||
#define MYGUI_COMBINE(a, b) MYGUI_COMBINE1(a, b)
|
||
#define MYGUI_COMBINE1(a, b) a##b
|
||
|
||
#define MYGUI_I_DELEGATE MYGUI_COMBINE(IDelegate, MYGUI_SUFFIX)
|
||
|
||
#define MYGUI_C_STATIC_DELEGATE MYGUI_COMBINE(CStaticDelegate, MYGUI_SUFFIX)
|
||
#define MYGUI_C_METHOD_DELEGATE MYGUI_COMBINE(CMethodDelegate, MYGUI_SUFFIX)
|
||
|
||
#define MYGUI_C_DELEGATE MYGUI_COMBINE(CDelegate, MYGUI_SUFFIX)
|
||
#define MYGUI_C_MULTI_DELEGATE MYGUI_COMBINE(CMultiDelegate, MYGUI_SUFFIX)
|
||
|
||
|
||
// базовый класс всех делегатов
|
||
MYGUI_TEMPLATE MYGUI_TEMPLATE_PARAMS
|
||
class MYGUI_I_DELEGATE
|
||
{
|
||
public:
|
||
virtual ~MYGUI_I_DELEGATE() { }
|
||
#ifndef MYGUI_RTTI_DISABLE_TYPE_INFO
|
||
virtual bool isType( const std::type_info& _type) = 0;
|
||
#endif
|
||
virtual void invoke( MYGUI_PARAMS ) = 0;
|
||
virtual bool compare( MYGUI_I_DELEGATE MYGUI_TEMPLATE_ARGS* _delegate) const = 0;
|
||
virtual bool compare(IDelegateUnlink* _unlink) const
|
||
{
|
||
return false;
|
||
}
|
||
};
|
||
|
||
|
||
// делегат для статической функции
|
||
MYGUI_TEMPLATE MYGUI_TEMPLATE_PARAMS
|
||
class MYGUI_C_STATIC_DELEGATE : public MYGUI_I_DELEGATE MYGUI_TEMPLATE_ARGS
|
||
{
|
||
public:
|
||
typedef void (*Func)( MYGUI_PARAMS );
|
||
|
||
MYGUI_C_STATIC_DELEGATE (Func _func) : mFunc(_func) { }
|
||
|
||
#ifndef MYGUI_RTTI_DISABLE_TYPE_INFO
|
||
virtual bool isType( const std::type_info& _type)
|
||
{
|
||
return typeid( MYGUI_C_STATIC_DELEGATE MYGUI_TEMPLATE_ARGS ) == _type;
|
||
}
|
||
#endif
|
||
|
||
virtual void invoke( MYGUI_PARAMS )
|
||
{
|
||
mFunc( MYGUI_ARGS );
|
||
}
|
||
|
||
virtual bool compare( MYGUI_I_DELEGATE MYGUI_TEMPLATE_ARGS* _delegate) const
|
||
{
|
||
#ifndef MYGUI_RTTI_DISABLE_TYPE_INFO
|
||
if (nullptr == _delegate || !_delegate->isType(typeid(MYGUI_C_STATIC_DELEGATE MYGUI_TEMPLATE_ARGS)) ) return false;
|
||
MYGUI_C_STATIC_DELEGATE MYGUI_TEMPLATE_ARGS* cast = static_cast<MYGUI_C_STATIC_DELEGATE MYGUI_TEMPLATE_ARGS*>(_delegate);
|
||
#else
|
||
MYGUI_C_STATIC_DELEGATE MYGUI_TEMPLATE_ARGS* cast = dynamic_cast<MYGUI_C_STATIC_DELEGATE MYGUI_TEMPLATE_ARGS*>(_delegate);
|
||
if (nullptr == cast) return false;
|
||
#endif
|
||
return cast->mFunc == mFunc;
|
||
}
|
||
virtual bool compare(IDelegateUnlink* _unlink) const
|
||
{
|
||
return false;
|
||
}
|
||
|
||
private:
|
||
Func mFunc;
|
||
};
|
||
|
||
|
||
// делегат для метода класса
|
||
template MYGUI_T_TEMPLATE_PARAMS
|
||
class MYGUI_C_METHOD_DELEGATE : public MYGUI_I_DELEGATE MYGUI_TEMPLATE_ARGS
|
||
{
|
||
public:
|
||
typedef void (T::*Method)( MYGUI_PARAMS );
|
||
|
||
MYGUI_C_METHOD_DELEGATE(IDelegateUnlink* _unlink, T* _object, Method _method) : mUnlink(_unlink), mObject(_object), mMethod(_method) { }
|
||
|
||
#ifndef MYGUI_RTTI_DISABLE_TYPE_INFO
|
||
virtual bool isType( const std::type_info& _type)
|
||
{
|
||
return typeid( MYGUI_C_METHOD_DELEGATE MYGUI_T_TEMPLATE_ARGS ) == _type;
|
||
}
|
||
#endif
|
||
|
||
virtual void invoke( MYGUI_PARAMS )
|
||
{
|
||
(mObject->*mMethod)( MYGUI_ARGS );
|
||
}
|
||
|
||
virtual bool compare( MYGUI_I_DELEGATE MYGUI_TEMPLATE_ARGS* _delegate) const
|
||
{
|
||
#ifndef MYGUI_RTTI_DISABLE_TYPE_INFO
|
||
if (nullptr == _delegate || !_delegate->isType(typeid(MYGUI_C_METHOD_DELEGATE MYGUI_T_TEMPLATE_ARGS)) ) return false;
|
||
MYGUI_C_METHOD_DELEGATE MYGUI_T_TEMPLATE_ARGS* cast = static_cast< MYGUI_C_METHOD_DELEGATE MYGUI_T_TEMPLATE_ARGS* >(_delegate);
|
||
#else
|
||
MYGUI_C_METHOD_DELEGATE MYGUI_T_TEMPLATE_ARGS* cast = dynamic_cast< MYGUI_C_METHOD_DELEGATE MYGUI_T_TEMPLATE_ARGS* >(_delegate);
|
||
if (nullptr == cast) return false;
|
||
#endif
|
||
return cast->mObject == mObject && cast->mMethod == mMethod;
|
||
}
|
||
|
||
virtual bool compare(IDelegateUnlink* _unlink) const
|
||
{
|
||
return mUnlink == _unlink;
|
||
}
|
||
|
||
private:
|
||
IDelegateUnlink* mUnlink;
|
||
T* mObject;
|
||
Method mMethod;
|
||
};
|
||
|
||
} // namespace delegates
|
||
|
||
// шаблон для создания делегата статической функции
|
||
// параметры : указатель на функцию
|
||
// пример : newDelegate(funk_name);
|
||
// пример : newDelegate(class_name::static_method_name);
|
||
MYGUI_TEMPLATE MYGUI_TEMPLATE_PARAMS
|
||
inline delegates::MYGUI_I_DELEGATE MYGUI_TEMPLATE_ARGS* newDelegate( void (*_func)( MYGUI_PARAMS ) )
|
||
{
|
||
return new delegates::MYGUI_C_STATIC_DELEGATE MYGUI_TEMPLATE_ARGS (_func);
|
||
}
|
||
|
||
|
||
// шаблон для создания делегата метода класса
|
||
// параметры : указатель на объект класса и указатель на метод класса
|
||
// пример : newDelegate(&object_name, &class_name::method_name);
|
||
template MYGUI_T_TEMPLATE_PARAMS
|
||
inline delegates::MYGUI_I_DELEGATE MYGUI_TEMPLATE_ARGS* newDelegate( T* _object, void (T::*_method)( MYGUI_PARAMS ) )
|
||
{
|
||
return new delegates::MYGUI_C_METHOD_DELEGATE MYGUI_T_TEMPLATE_ARGS (delegates::GetDelegateUnlink(_object), _object, _method);
|
||
}
|
||
|
||
namespace delegates
|
||
{
|
||
// шаблон класса делегата
|
||
MYGUI_TEMPLATE MYGUI_TEMPLATE_PARAMS
|
||
class MYGUI_C_DELEGATE
|
||
{
|
||
public:
|
||
typedef MYGUI_I_DELEGATE MYGUI_TEMPLATE_ARGS IDelegate;
|
||
|
||
MYGUI_C_DELEGATE () : mDelegate(nullptr) { }
|
||
MYGUI_C_DELEGATE (const MYGUI_C_DELEGATE MYGUI_TEMPLATE_ARGS& _event) : mDelegate(nullptr)
|
||
{
|
||
// забираем себе владение
|
||
IDelegate* del = _event.mDelegate;
|
||
const_cast< MYGUI_C_DELEGATE MYGUI_TEMPLATE_ARGS& >(_event).mDelegate = nullptr;
|
||
|
||
if (mDelegate != nullptr && !mDelegate->compare(del))
|
||
delete mDelegate;
|
||
|
||
mDelegate = del;
|
||
}
|
||
~MYGUI_C_DELEGATE ()
|
||
{
|
||
clear();
|
||
}
|
||
|
||
bool empty() const
|
||
{
|
||
return mDelegate == nullptr;
|
||
}
|
||
|
||
void clear()
|
||
{
|
||
if (mDelegate)
|
||
{
|
||
delete mDelegate;
|
||
mDelegate = nullptr;
|
||
}
|
||
}
|
||
|
||
MYGUI_C_DELEGATE MYGUI_TEMPLATE_ARGS& operator=(IDelegate* _delegate)
|
||
{
|
||
delete mDelegate;
|
||
mDelegate = _delegate;
|
||
return *this;
|
||
}
|
||
|
||
MYGUI_C_DELEGATE MYGUI_TEMPLATE_ARGS& operator=(const MYGUI_C_DELEGATE MYGUI_TEMPLATE_ARGS& _event)
|
||
{
|
||
// забираем себе владение
|
||
IDelegate* del = _event.mDelegate;
|
||
const_cast< MYGUI_C_DELEGATE MYGUI_TEMPLATE_ARGS& >(_event).mDelegate = nullptr;
|
||
|
||
if (mDelegate != nullptr && !mDelegate->compare(del))
|
||
delete mDelegate;
|
||
|
||
mDelegate = del;
|
||
|
||
return *this;
|
||
}
|
||
|
||
void operator()( MYGUI_PARAMS )
|
||
{
|
||
if (mDelegate == nullptr) return;
|
||
mDelegate->invoke( MYGUI_ARGS );
|
||
}
|
||
|
||
private:
|
||
IDelegate* mDelegate;
|
||
};
|
||
|
||
|
||
// шаблон класса мульти делегата
|
||
MYGUI_TEMPLATE MYGUI_TEMPLATE_PARAMS
|
||
class MYGUI_C_MULTI_DELEGATE
|
||
{
|
||
public:
|
||
typedef MYGUI_I_DELEGATE MYGUI_TEMPLATE_ARGS IDelegate;
|
||
typedef MYGUI_TYPENAME std::list<IDelegate* /*, Allocator<IDelegate*>*/ > ListDelegate;
|
||
typedef MYGUI_TYPENAME ListDelegate::iterator ListDelegateIterator;
|
||
typedef MYGUI_TYPENAME ListDelegate::const_iterator ConstListDelegateIterator;
|
||
|
||
MYGUI_C_MULTI_DELEGATE () { }
|
||
~MYGUI_C_MULTI_DELEGATE ()
|
||
{
|
||
clear();
|
||
}
|
||
|
||
bool empty() const
|
||
{
|
||
for (ConstListDelegateIterator iter = mListDelegates.begin(); iter != mListDelegates.end(); ++iter)
|
||
{
|
||
if (*iter) return false;
|
||
}
|
||
return true;
|
||
}
|
||
|
||
void clear()
|
||
{
|
||
for (ListDelegateIterator iter = mListDelegates.begin(); iter != mListDelegates.end(); ++iter)
|
||
{
|
||
if (*iter)
|
||
{
|
||
delete (*iter);
|
||
(*iter) = nullptr;
|
||
}
|
||
}
|
||
}
|
||
|
||
void clear(IDelegateUnlink* _unlink)
|
||
{
|
||
for (ListDelegateIterator iter = mListDelegates.begin(); iter != mListDelegates.end(); ++iter)
|
||
{
|
||
if ((*iter) && (*iter)->compare(_unlink))
|
||
{
|
||
delete (*iter);
|
||
(*iter) = nullptr;
|
||
}
|
||
}
|
||
}
|
||
|
||
MYGUI_C_MULTI_DELEGATE MYGUI_TEMPLATE_ARGS& operator+=(IDelegate* _delegate)
|
||
{
|
||
for (ListDelegateIterator iter = mListDelegates.begin(); iter != mListDelegates.end(); ++iter)
|
||
{
|
||
if ((*iter) && (*iter)->compare(_delegate))
|
||
{
|
||
MYGUI_EXCEPT("Trying to add same delegate twice.");
|
||
}
|
||
}
|
||
mListDelegates.push_back(_delegate);
|
||
return *this;
|
||
}
|
||
|
||
MYGUI_C_MULTI_DELEGATE MYGUI_TEMPLATE_ARGS& operator-=(IDelegate* _delegate)
|
||
{
|
||
for (ListDelegateIterator iter = mListDelegates.begin(); iter != mListDelegates.end(); ++iter)
|
||
{
|
||
if ((*iter) && (*iter)->compare(_delegate))
|
||
{
|
||
// проверяем на идентичность делегатов
|
||
if ((*iter) != _delegate) delete (*iter);
|
||
(*iter) = nullptr;
|
||
break;
|
||
}
|
||
}
|
||
delete _delegate;
|
||
return *this;
|
||
}
|
||
|
||
void operator()( MYGUI_PARAMS )
|
||
{
|
||
ListDelegateIterator iter = mListDelegates.begin();
|
||
while (iter != mListDelegates.end())
|
||
{
|
||
if (nullptr == (*iter))
|
||
{
|
||
iter = mListDelegates.erase(iter);
|
||
}
|
||
else
|
||
{
|
||
(*iter)->invoke( MYGUI_ARGS );
|
||
++iter;
|
||
}
|
||
}
|
||
}
|
||
|
||
MYGUI_C_MULTI_DELEGATE (const MYGUI_C_MULTI_DELEGATE MYGUI_TEMPLATE_ARGS& _event)
|
||
{
|
||
// забираем себе владение
|
||
ListDelegate del = _event.mListDelegates;
|
||
const_cast< MYGUI_C_MULTI_DELEGATE MYGUI_TEMPLATE_ARGS& >(_event).mListDelegates.clear();
|
||
|
||
safe_clear(del);
|
||
|
||
mListDelegates = del;
|
||
}
|
||
|
||
MYGUI_C_MULTI_DELEGATE MYGUI_TEMPLATE_ARGS& operator=(const MYGUI_C_MULTI_DELEGATE MYGUI_TEMPLATE_ARGS& _event)
|
||
{
|
||
// забираем себе владение
|
||
ListDelegate del = _event.mListDelegates;
|
||
const_cast< MYGUI_C_MULTI_DELEGATE MYGUI_TEMPLATE_ARGS& >(_event).mListDelegates.clear();
|
||
|
||
safe_clear(del);
|
||
|
||
mListDelegates = del;
|
||
|
||
return *this;
|
||
}
|
||
|
||
MYGUI_OBSOLETE("use : operator += ")
|
||
MYGUI_C_MULTI_DELEGATE MYGUI_TEMPLATE_ARGS& operator=(IDelegate* _delegate)
|
||
{
|
||
clear();
|
||
*this += _delegate;
|
||
return *this;
|
||
}
|
||
|
||
private:
|
||
void safe_clear(ListDelegate& _delegates)
|
||
{
|
||
for (ListDelegateIterator iter = mListDelegates.begin(); iter != mListDelegates.end(); ++iter)
|
||
{
|
||
if (*iter)
|
||
{
|
||
IDelegate* del = (*iter);
|
||
(*iter) = nullptr;
|
||
delete_is_not_found(del, _delegates);
|
||
}
|
||
}
|
||
}
|
||
|
||
void delete_is_not_found(IDelegate* _del, ListDelegate& _delegates)
|
||
{
|
||
for (ListDelegateIterator iter = _delegates.begin(); iter != _delegates.end(); ++iter)
|
||
{
|
||
if ((*iter) && (*iter)->compare(_del))
|
||
{
|
||
return;
|
||
}
|
||
}
|
||
|
||
delete _del;
|
||
}
|
||
|
||
private:
|
||
ListDelegate mListDelegates;
|
||
};
|
||
|
||
|
||
#undef MYGUI_COMBINE
|
||
#undef MYGUI_COMBINE1
|
||
|
||
#undef MYGUI_I_DELEGATE
|
||
|
||
#undef MYGUI_C_STATIC_DELEGATE
|
||
#undef MYGUI_C_METHOD_DELEGATE
|
||
|
||
#undef MYGUI_C_DELEGATE
|
||
#undef MYGUI_C_MULTI_DELEGATE
|
||
|
||
#undef MYGUI_SUFFIX
|
||
#undef MYGUI_TEMPLATE
|
||
#undef MYGUI_TEMPLATE_PARAMS
|
||
#undef MYGUI_TEMPLATE_ARGS
|
||
#undef MYGUI_T_TEMPLATE_PARAMS
|
||
#undef MYGUI_T_TEMPLATE_ARGS
|
||
#undef MYGUI_PARAMS
|
||
#undef MYGUI_ARGS
|
||
#undef MYGUI_TYPENAME
|
||
|
||
} // namespace delegates
|