include/wx/objstrm.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        objstrm.h
   3 // Purpose:     wxObjectStream classes
   4 // Author:      Guilhem Lavaux
   5 // Modified by:
   6 // Created:     16/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Guilhem Lavaux
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11 #ifndef _WX_WXOBJSTRM_H__
  12 #define _WX_WXOBJSTRM_H__
  13
  14 #ifdef __GNUG__
  15 #pragma interface
  16 #endif
  17
  18 #include "wx/defs.h"
  19
  20 #if wxUSE_STREAMS && wxUSE_SERIAL
  21
  22 #include "wx/object.h"
  23 #include "wx/string.h"
  24 #include "wx/stream.h"
  25
  26 class wxObjectStreamInfo : public wxObject {
  27  public:
  28   wxString object_name;
  29   int n_children, children_removed;
  30   wxList children;
  31   wxObjectStreamInfo *parent;
  32   wxObject *object;
  33   bool duplicate, recall;
  34 };
  35
  36 class wxObjectOutputStream : public wxFilterOutputStream {
  37  public:
  38   wxObjectOutputStream(wxOutputStream& s);
  39
  40   void AddChild(wxObject *obj);
  41   bool SaveObject(wxObject& obj);
  42
  43   bool FirstStage() const { return m_stage == 0; }
  44
  45   wxString GetObjectName(wxObject *obj);
  46
  47  protected:
  48   void WriteObjectDef(wxObjectStreamInfo& info);
  49   void ProcessObjectDef(wxObjectStreamInfo *info);
  50   void ProcessObjectData(wxObjectStreamInfo *info);
  51
  52  protected:
  53   int m_stage;
  54   bool m_saving;
  55   wxObjectStreamInfo *m_current_info;
  56   wxList m_saved_objs;
  57 };
  58
  59 class wxObjectInputStream : public wxFilterInputStream {
  60  public:
  61   wxObjectInputStream(wxInputStream& s);
  62
  63   bool SecondCall() const { return m_secondcall; }
  64   void Recall(bool on = TRUE) { m_current_info->recall = on; }
  65
  66   wxObject *GetChild(int no) const;
  67   wxObject *GetChild();
  68   int NumberOfChildren() const { return m_current_info->n_children; }
  69   void RemoveChildren(int nb);
  70   wxObject *GetParent() const;
  71   wxObject *LoadObject();
  72
  73   wxObject *SolveName(const wxString& objName) const;
  74
  75  protected:
  76   bool ReadObjectDef(wxObjectStreamInfo *info);
  77   wxObjectStreamInfo *ProcessObjectDef(wxObjectStreamInfo *info);
  78   void ProcessObjectData(wxObjectStreamInfo *info);
  79
  80  protected:
  81   bool m_secondcall;
  82   wxObjectStreamInfo *m_current_info;
  83   wxList m_solver;
  84 };
  85
  86 #endif
  87   // wxUSE_STREAMS && wxUSE_SERIAL
  88
  89 #endif
  90 // _WX_WXOBJSTRM_H__