src/common/clntdata.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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) wxWindows team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  13     #pragma implementation "clntdata.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20     #pragma hdrstop
  21 #endif
  22
  23 #include "wx/clntdata.h"
  24
  25
  26 // ----------------------------------------------------------------------------
  27
  28
  29 wxClientDataContainer::wxClientDataContainer()
  30 {
  31     // no client data (yet)
  32     m_clientData = NULL;
  33     m_clientDataType = wxClientData_None;
  34 }
  35
  36 wxClientDataContainer::~wxClientDataContainer()
  37 {
  38     // we only delete object data, not untyped
  39     if ( m_clientDataType == wxClientData_Object )
  40         delete m_clientObject;
  41 }
  42
  43 void wxClientDataContainer::DoSetClientObject( wxClientData *data )
  44 {
  45     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
  46                   wxT("can't have both object and void client data") );
  47
  48     if ( m_clientObject )
  49         delete m_clientObject;
  50
  51     m_clientObject = data;
  52     m_clientDataType = wxClientData_Object;
  53 }
  54
  55 wxClientData *wxClientDataContainer::DoGetClientObject() const
  56 {
  57     // it's not an error to call GetClientObject() on a window which doesn't
  58     // have client data at all - NULL will be returned
  59     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
  60                   wxT("this window doesn't have object client data") );
  61
  62     return m_clientObject;
  63 }
  64
  65 void wxClientDataContainer::DoSetClientData( void *data )
  66 {
  67     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
  68                   wxT("can't have both object and void client data") );
  69
  70     m_clientData = data;
  71     m_clientDataType = wxClientData_Void;
  72 }
  73
  74 void *wxClientDataContainer::DoGetClientData() const
  75 {
  76     // it's not an error to call GetClientData() on a window which doesn't have
  77     // client data at all - NULL will be returned
  78     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
  79                   wxT("this window doesn't have void client data") );
  80
  81     return m_clientData;
  82 }
  83
  84
  85 // ----------------------------------------------------------------------------
  86
  87