diff options
Diffstat (limited to 'src/corelib/kernel')
-rw-r--r-- | src/corelib/kernel/qpointer.h | 56 |
1 files changed, 22 insertions, 34 deletions
diff --git a/src/corelib/kernel/qpointer.h b/src/corelib/kernel/qpointer.h index 385bc2814b..230b6b66eb 100644 --- a/src/corelib/kernel/qpointer.h +++ b/src/corelib/kernel/qpointer.h @@ -50,56 +50,44 @@ QT_BEGIN_NAMESPACE class QVariant; -class QPointerBase -{ - QWeakPointer<QObject> wp; - -protected: - inline QPointerBase() : wp() { } - inline QPointerBase(QObject *p) : wp(p, true) { } - // compiler-generated copy/move ctor/assignment operators are fine! (even though public) - inline ~QPointerBase() { } - - inline QObject* data() const - { return wp.data(); } - - inline void assign(QObject *p) - { wp.assign(p); } - - inline bool isNull() const - { return wp.isNull(); } - - inline void clear() - { wp.clear(); } -}; - template <class T> -class QPointer : private QPointerBase +class QPointer { + template<typename U> + struct TypeSelector + { + typedef QObject Type; + }; + template<typename U> + struct TypeSelector<const U> + { + typedef const QObject Type; + }; + typedef typename TypeSelector<T>::Type QObjectType; + QWeakPointer<QObjectType> wp; public: inline QPointer() { } - inline QPointer(T *p) : QPointerBase(p) { } + inline QPointer(T *p) : wp(p, true) { } // compiler-generated copy/move ctor/assignment operators are fine! inline ~QPointer() { } inline QPointer<T> &operator=(T* p) - { QPointerBase::assign(p); return *this; } + { wp.assign(static_cast<QObjectType*>(p)); return *this; } inline T* data() const - { return static_cast<T*>(QPointerBase::data()); } + { return static_cast<T*>( wp.data()); } inline T* operator->() const { return data(); } inline T& operator*() const { return *data(); } inline operator T*() const { return data(); } -#ifdef Q_QDOC - inline bool isNull() const; - inline void clear(); -#else - using QPointerBase::isNull; - using QPointerBase::clear; -#endif + + inline bool isNull() const + { return wp.isNull(); } + + inline void clear() + { wp.clear(); } }; template <class T> Q_DECLARE_TYPEINFO_BODY(QPointer<T>, Q_MOVABLE_TYPE); |