src/common/module.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        module.cpp
   3 // Purpose:     Modules initialization/destruction
   4 // Author:      Wolfram Gloger/adapted by Guilhem Lavaux
   5 // Modified by:
   6 // Created:     04/11/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Wolfram Gloger and Guilhem Lavaux
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  13 #pragma implementation "module.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/module.h"
  24 #include "wx/hash.h"
  25 #include "wx/listimpl.cpp"
  26
  27 WX_DEFINE_LIST(wxModuleList);
  28
  29 IMPLEMENT_CLASS(wxModule, wxObject)
  30
  31 wxModuleList wxModule::m_modules;
  32
  33 void wxModule::RegisterModule(wxModule* module)
  34 {
  35     m_modules.Append(module);
  36 }
  37
  38 void wxModule::UnregisterModule(wxModule* module)
  39 {
  40     m_modules.DeleteObject(module);
  41     delete module;
  42 }
  43
  44 // Collect up all module-derived classes, create an instance of each,
  45 // and register them.
  46 void wxModule::RegisterModules()
  47 {
  48     wxHashTable::compatibility_iterator node;
  49     wxClassInfo* classInfo;
  50
  51     wxClassInfo::sm_classTable->BeginFind();
  52     node = wxClassInfo::sm_classTable->Next();
  53     while (node)
  54     {
  55         classInfo = (wxClassInfo *)node->GetData();
  56         if ( classInfo->IsKindOf(CLASSINFO(wxModule)) &&
  57             (classInfo != (& (wxModule::ms_classInfo))) )
  58         {
  59             wxModule* module = (wxModule *)classInfo->CreateObject();
  60             RegisterModule(module);
  61         }
  62         node = wxClassInfo::sm_classTable->Next();
  63     }
  64 }
  65
  66 bool wxModule::InitializeModules()
  67 {
  68     // Initialize user-defined modules
  69     wxModuleList::compatibility_iterator node;
  70     for ( node = m_modules.GetFirst(); node; node = node->GetNext() )
  71     {
  72         wxModule *module = node->GetData();
  73         if ( !module->Init() )
  74         {
  75             wxLogError(_("Module \"%s\" initialization failed"),
  76                        module->GetClassInfo()->GetClassName());
  77
  78             // clean up already initialized modules - process in reverse order
  79             wxModuleList::compatibility_iterator n;
  80             for ( n = node->GetPrevious(); n; n = n->GetPrevious() )
  81             {
  82                 n->GetData()->OnExit();
  83             }
  84
  85             return false;
  86         }
  87     }
  88
  89     return true;
  90 }
  91
  92 void wxModule::CleanUpModules()
  93 {
  94     // Cleanup user-defined modules
  95     wxModuleList::compatibility_iterator node;
  96     for ( node = m_modules.GetFirst(); node; node = node->GetNext() )
  97     {
  98         node->GetData()->Exit();
  99     }
 100
 101     WX_CLEAR_LIST(wxModuleList, m_modules);
 102 }
 103