4508c2b01b
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@32993 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
80 lines
2.3 KiB
C++
80 lines
2.3 KiB
C++
/////////////////////////////////////////////////////////////////////////////
|
|
// Name: wx/cocoa/ObjcRef.h
|
|
// Purpose: wxObjcAutoRef template class
|
|
// Author: David Elliott
|
|
// Modified by:
|
|
// Created: 2004/03/28
|
|
// RCS-ID: $Id$
|
|
// Copyright: (c) 2004 David Elliott <dfe@cox.net>
|
|
// Licence: wxWindows licence
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef _WX_COCOA_OBJCREF_H__
|
|
#define _WX_COCOA_OBJCREF_H__
|
|
/*
|
|
wxObjcAutoRefFromAlloc: construct a reference to an object that was
|
|
[NSObject -alloc]'ed and thus does not need a retain
|
|
wxObjcAutoRef: construct a reference to an object that was
|
|
either autoreleased or is retained by something else.
|
|
*/
|
|
|
|
struct objc_object;
|
|
|
|
// We must do any calls to Objective-C from an Objective-C++ source file
|
|
class wxObjcAutoRefBase
|
|
{
|
|
protected:
|
|
static struct objc_object* ObjcRetain(struct objc_object*);
|
|
static void ObjcRelease(struct objc_object*);
|
|
};
|
|
|
|
// T should be a pointer like NSObject*
|
|
|
|
template <class T>
|
|
class wxObjcAutoRefFromAlloc: wxObjcAutoRefBase
|
|
{
|
|
public:
|
|
wxObjcAutoRefFromAlloc(T p = 0)
|
|
: m_ptr(p)
|
|
// NOTE: this is from alloc. Do NOT retain
|
|
{}
|
|
wxObjcAutoRefFromAlloc(const wxObjcAutoRefFromAlloc& otherRef)
|
|
: m_ptr(otherRef.m_ptr)
|
|
{ ObjcRetain(m_ptr); }
|
|
~wxObjcAutoRefFromAlloc()
|
|
{ ObjcRelease(m_ptr); }
|
|
wxObjcAutoRefFromAlloc& operator=(const wxObjcAutoRefFromAlloc& otherRef)
|
|
{ ObjcRetain(otherRef.m_ptr);
|
|
ObjcRelease(m_ptr);
|
|
m_ptr = otherRef.m_ptr;
|
|
return *this;
|
|
}
|
|
operator T() const
|
|
{ return m_ptr; }
|
|
T operator->() const
|
|
{ return m_ptr; }
|
|
protected:
|
|
T m_ptr;
|
|
};
|
|
|
|
// The only thing wxObjcAutoRef has to do is retain an initial object
|
|
template <class T>
|
|
class wxObjcAutoRef: public wxObjcAutoRefFromAlloc<T>
|
|
{
|
|
public:
|
|
wxObjcAutoRef(T p = 0)
|
|
: wxObjcAutoRefFromAlloc<T>(p)
|
|
{ ObjcRetain(wxObjcAutoRefFromAlloc<T>::m_ptr); }
|
|
~wxObjcAutoRef() {}
|
|
wxObjcAutoRef(const wxObjcAutoRef& otherRef)
|
|
: wxObjcAutoRefFromAlloc<T>(otherRef)
|
|
{}
|
|
wxObjcAutoRef(const wxObjcAutoRefFromAlloc<T>& otherRef)
|
|
: wxObjcAutoRefFromAlloc<T>(otherRef)
|
|
{}
|
|
wxObjcAutoRef& operator=(const wxObjcAutoRef& otherRef)
|
|
{ return wxObjcAutoRefFromAlloc<T>::operator=(otherRef); }
|
|
};
|
|
|
|
#endif //ndef _WX_COCOA_OBJCREF_H__
|