src/common/clntdata.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/clntdata.cpp
   3 // Purpose:     A mixin class for holding a wxClientData or void pointer
   4 // Author:      Robin Dunn
   5 // Modified by:
   6 // Created:     9-Oct-2001
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16     #pragma hdrstop
  17 #endif
  18
  19 #include "wx/clntdata.h"
  20
  21
  22 // ----------------------------------------------------------------------------
  23
  24
  25 wxClientDataContainer::wxClientDataContainer()
  26 {
  27     // no client data (yet)
  28     m_clientData = NULL;
  29     m_clientDataType = wxClientData_None;
  30 }
  31
  32 wxClientDataContainer::~wxClientDataContainer()
  33 {
  34     // we only delete object data, not untyped
  35     if ( m_clientDataType == wxClientData_Object )
  36         delete m_clientObject;
  37 }
  38
  39 void wxClientDataContainer::DoSetClientObject( wxClientData *data )
  40 {
  41     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
  42                   wxT("can't have both object and void client data") );
  43
  44     if ( m_clientObject )
  45         delete m_clientObject;
  46
  47     m_clientObject = data;
  48     m_clientDataType = wxClientData_Object;
  49 }
  50
  51 wxClientData *wxClientDataContainer::DoGetClientObject() const
  52 {
  53     // it's not an error to call GetClientObject() on a window which doesn't
  54     // have client data at all - NULL will be returned
  55     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
  56                   wxT("this window doesn't have object client data") );
  57
  58     return m_clientObject;
  59 }
  60
  61 void wxClientDataContainer::DoSetClientData( void *data )
  62 {
  63     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
  64                   wxT("can't have both object and void client data") );
  65
  66     m_clientData = data;
  67     m_clientDataType = wxClientData_Void;
  68 }
  69
  70 void *wxClientDataContainer::DoGetClientData() const
  71 {
  72     // it's not an error to call GetClientData() on a window which doesn't have
  73     // client data at all - NULL will be returned
  74     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
  75                   wxT("this window doesn't have void client data") );
  76
  77     return m_clientData;
  78 }
  79
  80
  81 // ----------------------------------------------------------------------------
  82
  83