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 __WXOBJSTRM_H__
  12 #define __WXOBJSTRM_H__
  13
  14 #ifdef __GNUG__
  15 #pragma interface
  16 #endif
  17
  18 #include "wx/defs.h"
  19 #include "wx/object.h"
  20 #include "wx/string.h"
  21 #include "wx/stream.h"
  22
  23 class wxObjectStreamInfo : public wxObject {
  24  public:
  25   wxString object_name;
  26   int n_children, children_removed;
  27   wxList children;
  28   wxObjectStreamInfo *parent;
  29   wxObject *object;
  30 };
  31
  32 class wxObjectOutputStream : public wxFilterOutputStream {
  33  public:
  34   wxObjectOutputStream(wxOutputStream& s);
  35
  36   void AddChild(wxObject *obj);
  37   bool SaveObject(wxObject& obj);
  38
  39   bool FirstStage() const { return m_stage == 0; }
  40
  41   wxString GetObjectName(wxObject *obj);
  42
  43  protected:
  44   void WriteObjectDef(wxObjectStreamInfo& info);
  45   void ProcessObjectDef(wxObjectStreamInfo *info);
  46   void ProcessObjectData(wxObjectStreamInfo *info);
  47
  48  protected:
  49   int m_stage;
  50   bool m_saving;
  51   wxObjectStreamInfo *m_current_info;
  52 };
  53
  54 class wxObjectInputStream : public wxFilterInputStream {
  55  public:
  56   wxObjectInputStream(wxInputStream& s);
  57
  58   wxObject *GetChild(int no) const;
  59   int NumberOfChildren() const { return m_current_info->n_children; }
  60   void RemoveChildren(int nb);
  61   wxObject *GetParent() const;
  62   wxObject *LoadObject();
  63
  64   wxObject *SolveName(const wxString& objName) const;
  65
  66  protected:
  67   bool ReadObjectDef(wxObjectStreamInfo *info);
  68   wxObjectStreamInfo *ProcessObjectDef(wxObjectStreamInfo *info);
  69   void ProcessObjectData(wxObjectStreamInfo *info);
  70
  71  protected:
  72   wxObjectStreamInfo *m_current_info;
  73   wxList m_solver;
  74 };
  75
  76 #endif