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 #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   bool duplicate, recall;
  31 };
  32
  33 class wxObjectOutputStream : public wxFilterOutputStream {
  34  public:
  35   wxObjectOutputStream(wxOutputStream& s);
  36
  37   void AddChild(wxObject *obj);
  38   bool SaveObject(wxObject& obj);
  39
  40   bool FirstStage() const { return m_stage == 0; }
  41
  42   wxString GetObjectName(wxObject *obj);
  43
  44  protected:
  45   void WriteObjectDef(wxObjectStreamInfo& info);
  46   void ProcessObjectDef(wxObjectStreamInfo *info);
  47   void ProcessObjectData(wxObjectStreamInfo *info);
  48
  49  protected:
  50   int m_stage;
  51   bool m_saving;
  52   wxObjectStreamInfo *m_current_info;
  53   wxList m_saved_objs;
  54 };
  55
  56 class wxObjectInputStream : public wxFilterInputStream {
  57  public:
  58   wxObjectInputStream(wxInputStream& s);
  59
  60   bool SecondCall() const { return m_secondcall; }
  61   void Recall(bool on = TRUE) { m_current_info->recall = on; }
  62
  63   wxObject *GetChild(int no) const;
  64   wxObject *GetChild();
  65   int NumberOfChildren() const { return m_current_info->n_children; }
  66   void RemoveChildren(int nb);
  67   wxObject *GetParent() const;
  68   wxObject *LoadObject();
  69
  70   wxObject *SolveName(const wxString& objName) const;
  71
  72  protected:
  73   bool ReadObjectDef(wxObjectStreamInfo *info);
  74   wxObjectStreamInfo *ProcessObjectDef(wxObjectStreamInfo *info);
  75   void ProcessObjectData(wxObjectStreamInfo *info);
  76
  77  protected:
  78   bool m_secondcall;
  79   wxObjectStreamInfo *m_current_info;
  80   wxList m_solver;
  81 };
  82
  83 #endif