| /**************************************************************************** |
| ** |
| ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). |
| ** All rights reserved. |
| ** Contact: Nokia Corporation (qt-info@nokia.com) |
| ** |
| ** This file is part of the tools applications of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** GNU Lesser General Public License Usage |
| ** This file may be used under the terms of the GNU Lesser General Public |
| ** License version 2.1 as published by the Free Software Foundation and |
| ** appearing in the file LICENSE.LGPL included in the packaging of this |
| ** file. Please review the following information to ensure the GNU Lesser |
| ** General Public License version 2.1 requirements will be met: |
| ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
| ** |
| ** In addition, as a special exception, Nokia gives you certain additional |
| ** rights. These rights are described in the Nokia Qt LGPL Exception |
| ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU General |
| ** Public License version 3.0 as published by the Free Software Foundation |
| ** and appearing in the file LICENSE.GPL included in the packaging of this |
| ** file. Please review the following information to ensure the GNU General |
| ** Public License version 3.0 requirements will be met: |
| ** http://www.gnu.org/copyleft/gpl.html. |
| ** |
| ** Other Usage |
| ** Alternatively, this file may be used in accordance with the terms and |
| ** conditions contained in a signed written agreement between you and Nokia. |
| ** |
| ** |
| ** |
| ** |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #ifndef DEBUGGER_CALLBACK_H |
| #define DEBUGGER_CALLBACK_H |
| |
| #include "symbianutils_global.h" |
| |
| namespace trk { |
| namespace Internal { |
| |
| /* Helper class for the 1-argument functor: |
| * Cloneable base class for the implementation which is |
| * invokeable with the argument. */ |
| template <class Argument> |
| class CallbackImplBase |
| { |
| Q_DISABLE_COPY(CallbackImplBase) |
| public: |
| CallbackImplBase() {} |
| virtual CallbackImplBase *clone() const = 0; |
| virtual void invoke(Argument a) = 0; |
| virtual ~CallbackImplBase() {} |
| }; |
| |
| /* Helper class for the 1-argument functor: Implementation for |
| * a class instance with a member function pointer. */ |
| template <class Class, class Argument> |
| class CallbackMemberPtrImpl : public CallbackImplBase<Argument> |
| { |
| public: |
| typedef void (Class::*MemberFuncPtr)(Argument); |
| |
| CallbackMemberPtrImpl(Class *instance, |
| MemberFuncPtr memberFunc) : |
| m_instance(instance), |
| m_memberFunc(memberFunc) {} |
| |
| virtual CallbackImplBase<Argument> *clone() const |
| { |
| return new CallbackMemberPtrImpl<Class, Argument>(m_instance, m_memberFunc); |
| } |
| |
| virtual void invoke(Argument a) |
| { (m_instance->*m_memberFunc)(a); } |
| private: |
| Class *m_instance; |
| MemberFuncPtr m_memberFunc; |
| }; |
| |
| } // namespace Internal |
| |
| /* Default-constructible, copyable 1-argument functor providing an |
| * operator()(Argument) that invokes a member function of a class: |
| * \code |
| class Foo { |
| public: |
| void print(const std::string &); |
| }; |
| ... |
| Foo foo; |
| Callback<const std::string &> f1(&foo, &Foo::print); |
| f1("test"); |
| \endcode */ |
| |
| template <class Argument> |
| class Callback |
| { |
| public: |
| Callback() : m_impl(0) {} |
| |
| template <class Class> |
| Callback(Class *instance, void (Class::*memberFunc)(Argument)) : |
| m_impl(new Internal::CallbackMemberPtrImpl<Class,Argument>(instance, memberFunc)) |
| {} |
| |
| ~Callback() |
| { |
| clean(); |
| } |
| |
| Callback(const Callback &rhs) : |
| m_impl(0) |
| { |
| if (rhs.m_impl) |
| m_impl = rhs.m_impl->clone(); |
| } |
| |
| Callback &operator=(const Callback &rhs) |
| { |
| if (this != &rhs) { |
| clean(); |
| if (rhs.m_impl) |
| m_impl = rhs.m_impl->clone(); |
| } |
| return *this; |
| } |
| |
| bool isNull() const { return m_impl == 0; } |
| operator bool() const { return !isNull(); } |
| |
| void operator()(Argument a) |
| { |
| if (m_impl) |
| m_impl->invoke(a); |
| } |
| |
| private: |
| void clean() |
| { |
| if (m_impl) { |
| delete m_impl; |
| m_impl = 0; |
| } |
| } |
| |
| Internal::CallbackImplBase<Argument> *m_impl; |
| }; |
| |
| } // namespace trk |
| |
| #endif // DEBUGGER_CALLBACK_H |