include/wx/windowptr.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/windowptr.h
   3 // Purpose:     smart pointer for holding wxWindow instances
   4 // Author:      Vaclav Slavik
   5 // Created:     2013-09-01
   6 // Copyright:   (c) 2013 Vaclav Slavik
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifndef _WX_WINDOWPTR_H_
  11 #define _WX_WINDOWPTR_H_
  12
  13 #include "wx/sharedptr.h"
  14
  15 // ----------------------------------------------------------------------------
  16 // wxWindowPtr: A smart pointer with correct wxWindow destruction.
  17 // ----------------------------------------------------------------------------
  18
  19 namespace wxPrivate
  20 {
  21
  22 struct wxWindowDeleter
  23 {
  24     void operator()(wxWindow *win)
  25     {
  26         win->Destroy();
  27     }
  28 };
  29
  30 } // namespace wxPrivate
  31
  32 template<typename T>
  33 class wxWindowPtr : public wxSharedPtr<T>
  34 {
  35 public:
  36     typedef T element_type;
  37
  38     wxEXPLICIT wxWindowPtr(element_type* win)
  39         : wxSharedPtr<T>(win, wxPrivate::wxWindowDeleter())
  40     {
  41     }
  42
  43     wxWindowPtr() {}
  44     wxWindowPtr(const wxWindowPtr& tocopy) : wxSharedPtr<T>(tocopy) {}
  45
  46     wxWindowPtr& operator=(const wxWindowPtr& tocopy)
  47     {
  48         wxSharedPtr<T>::operator=(tocopy);
  49         return *this;
  50     }
  51
  52     wxWindowPtr& operator=(element_type* win)
  53     {
  54         return operator=(wxWindowPtr(win));
  55     }
  56
  57     void reset(T* ptr = NULL)
  58     {
  59         wxSharedPtr<T>::reset(ptr, wxPrivate::wxWindowDeleter());
  60     }
  61 };
  62
  63 #endif // _WX_WINDOWPTR_H_