diff --git a/contrib/include/wx/xrc/xmlres.h b/contrib/include/wx/xrc/xmlres.h index ca37a9cfa7..f52356bd72 100644 --- a/contrib/include/wx/xrc/xmlres.h +++ b/contrib/include/wx/xrc/xmlres.h @@ -37,6 +37,9 @@ class WXDLLEXPORT wxFrame; class WXDLLEXPORT wxToolBar; class WXXMLDLLEXPORT wxXmlResourceHandler; +class WXXMLDLLEXPORT wxXmlSubclassFactory; +class WXXMLDLLEXPORT wxXmlSubclassFactoriesList; +class wxXmlResourceModule; // These macros indicate current version of XML resources (this information is @@ -133,6 +136,11 @@ public: // Removes all handlers void ClearHandlers(); + + // Registers subclasses factory for use in XRC. This function is not meant + // for public use, please see the comment above wxXmlSubclassFactory + // definition. + static void AddSubclassFactory(wxXmlSubclassFactory *factory); // Loads menu from resource. Returns NULL on failure. wxMenu *LoadMenu(const wxString& name); @@ -244,6 +252,9 @@ private: #endif friend class wxXmlResourceHandler; + friend class wxXmlResourceModule; + + static wxXmlSubclassFactoriesList *ms_subclassFactories; // singleton instance: static wxXmlResource *ms_instance; @@ -438,6 +449,20 @@ protected: void wxXmlInitResourceModule(); +// This class is used to create instances of XRC "object" nodes with "subclass" +// property. It is _not_ supposed to be used by XRC users, you should instead +// register your subclasses via wxWindows' RTTI mechanism. This class is useful +// only for language bindings developer who need a way to implement subclassing +// in wxWindows ports that don't support wxRTTI (e.g. wxPython). +class WXXMLDLLEXPORT wxXmlSubclassFactory +{ +public: + // Try to create instance of given class and return it, return NULL on failure: + virtual wxObject *Create(const wxString& className) = 0; + virtual ~wxXmlSubclassFactory() {} +}; + + /* ------------------------------------------------------------------------- Backward compatibility macros. Do *NOT* use, they may disappear in future versions of the XRC library! diff --git a/contrib/src/xrc/xmlres.cpp b/contrib/src/xrc/xmlres.cpp index 87087f7421..17581fa357 100644 --- a/contrib/src/xrc/xmlres.cpp +++ b/contrib/src/xrc/xmlres.cpp @@ -547,6 +547,40 @@ wxObject *wxXmlResource::CreateResFromNode(wxXmlNode *node, wxObject *parent, wx } +#include "wx/listimpl.cpp" +WX_DECLARE_LIST(wxXmlSubclassFactory, wxXmlSubclassFactoriesList); +WX_DEFINE_LIST(wxXmlSubclassFactoriesList); + +wxXmlSubclassFactoriesList *wxXmlResource::ms_subclassFactories = NULL; + +/*static*/ void wxXmlResource::AddSubclassFactory(wxXmlSubclassFactory *factory) +{ + if (!ms_subclassFactories) + { + ms_subclassFactories = new wxXmlSubclassFactoriesList; + ms_subclassFactories->DeleteContents(TRUE); + } + ms_subclassFactories->Append(factory); +} + +class wxXmlSubclassFactoryCXX : public wxXmlSubclassFactory +{ +public: + ~wxXmlSubclassFactoryCXX() {} + + wxObject *Create(const wxString& className) + { + wxClassInfo* classInfo = wxClassInfo::FindClass(className); + + if (classInfo) + return classInfo->CreateObject(); + else + return NULL; + } +}; + + + wxXmlResourceHandler::wxXmlResourceHandler() @@ -568,18 +602,23 @@ wxObject *wxXmlResourceHandler::CreateResource(wxXmlNode *node, wxObject *parent !(m_resource->GetFlags() & wxXRC_NO_SUBCLASSING)) { wxString subclass = node->GetPropVal(wxT("subclass"), wxEmptyString); - wxClassInfo* classInfo = wxClassInfo::FindClass(subclass); - - if (classInfo) - m_instance = classInfo->CreateObject(); - - if (!m_instance) + if (!subclass.empty()) { - wxLogError(_("Subclass '%s' not found for resource '%s', not subclassing!"), - subclass.c_str(), node->GetPropVal(wxT("name"), wxEmptyString).c_str()); - } + for (wxXmlSubclassFactoriesList::Node *i = wxXmlResource::ms_subclassFactories->GetFirst(); + i; i = i->GetNext()) + { + m_instance = i->GetData()->Create(subclass); + if (m_instance) + break; + } - m_instance = classInfo->CreateObject(); + if (!m_instance) + { + wxString name = node->GetPropVal(wxT("name"), wxEmptyString); + wxLogError(_("Subclass '%s' not found for resource '%s', not subclassing!"), + subclass.c_str(), name.c_str()); + } + } } m_node = node; @@ -1167,11 +1206,13 @@ public: wxXmlResourceModule() {} bool OnInit() { + wxXmlResource::AddSubclassFactory(new wxXmlSubclassFactoryCXX); return TRUE; } void OnExit() { delete wxXmlResource::Set(NULL); + wxDELETE(wxXmlResource::ms_subclassFactories); CleanXRCID_Records(); } }; diff --git a/include/wx/xrc/xmlres.h b/include/wx/xrc/xmlres.h index ca37a9cfa7..f52356bd72 100644 --- a/include/wx/xrc/xmlres.h +++ b/include/wx/xrc/xmlres.h @@ -37,6 +37,9 @@ class WXDLLEXPORT wxFrame; class WXDLLEXPORT wxToolBar; class WXXMLDLLEXPORT wxXmlResourceHandler; +class WXXMLDLLEXPORT wxXmlSubclassFactory; +class WXXMLDLLEXPORT wxXmlSubclassFactoriesList; +class wxXmlResourceModule; // These macros indicate current version of XML resources (this information is @@ -133,6 +136,11 @@ public: // Removes all handlers void ClearHandlers(); + + // Registers subclasses factory for use in XRC. This function is not meant + // for public use, please see the comment above wxXmlSubclassFactory + // definition. + static void AddSubclassFactory(wxXmlSubclassFactory *factory); // Loads menu from resource. Returns NULL on failure. wxMenu *LoadMenu(const wxString& name); @@ -244,6 +252,9 @@ private: #endif friend class wxXmlResourceHandler; + friend class wxXmlResourceModule; + + static wxXmlSubclassFactoriesList *ms_subclassFactories; // singleton instance: static wxXmlResource *ms_instance; @@ -438,6 +449,20 @@ protected: void wxXmlInitResourceModule(); +// This class is used to create instances of XRC "object" nodes with "subclass" +// property. It is _not_ supposed to be used by XRC users, you should instead +// register your subclasses via wxWindows' RTTI mechanism. This class is useful +// only for language bindings developer who need a way to implement subclassing +// in wxWindows ports that don't support wxRTTI (e.g. wxPython). +class WXXMLDLLEXPORT wxXmlSubclassFactory +{ +public: + // Try to create instance of given class and return it, return NULL on failure: + virtual wxObject *Create(const wxString& className) = 0; + virtual ~wxXmlSubclassFactory() {} +}; + + /* ------------------------------------------------------------------------- Backward compatibility macros. Do *NOT* use, they may disappear in future versions of the XRC library! diff --git a/src/xrc/xmlres.cpp b/src/xrc/xmlres.cpp index 87087f7421..17581fa357 100644 --- a/src/xrc/xmlres.cpp +++ b/src/xrc/xmlres.cpp @@ -547,6 +547,40 @@ wxObject *wxXmlResource::CreateResFromNode(wxXmlNode *node, wxObject *parent, wx } +#include "wx/listimpl.cpp" +WX_DECLARE_LIST(wxXmlSubclassFactory, wxXmlSubclassFactoriesList); +WX_DEFINE_LIST(wxXmlSubclassFactoriesList); + +wxXmlSubclassFactoriesList *wxXmlResource::ms_subclassFactories = NULL; + +/*static*/ void wxXmlResource::AddSubclassFactory(wxXmlSubclassFactory *factory) +{ + if (!ms_subclassFactories) + { + ms_subclassFactories = new wxXmlSubclassFactoriesList; + ms_subclassFactories->DeleteContents(TRUE); + } + ms_subclassFactories->Append(factory); +} + +class wxXmlSubclassFactoryCXX : public wxXmlSubclassFactory +{ +public: + ~wxXmlSubclassFactoryCXX() {} + + wxObject *Create(const wxString& className) + { + wxClassInfo* classInfo = wxClassInfo::FindClass(className); + + if (classInfo) + return classInfo->CreateObject(); + else + return NULL; + } +}; + + + wxXmlResourceHandler::wxXmlResourceHandler() @@ -568,18 +602,23 @@ wxObject *wxXmlResourceHandler::CreateResource(wxXmlNode *node, wxObject *parent !(m_resource->GetFlags() & wxXRC_NO_SUBCLASSING)) { wxString subclass = node->GetPropVal(wxT("subclass"), wxEmptyString); - wxClassInfo* classInfo = wxClassInfo::FindClass(subclass); - - if (classInfo) - m_instance = classInfo->CreateObject(); - - if (!m_instance) + if (!subclass.empty()) { - wxLogError(_("Subclass '%s' not found for resource '%s', not subclassing!"), - subclass.c_str(), node->GetPropVal(wxT("name"), wxEmptyString).c_str()); - } + for (wxXmlSubclassFactoriesList::Node *i = wxXmlResource::ms_subclassFactories->GetFirst(); + i; i = i->GetNext()) + { + m_instance = i->GetData()->Create(subclass); + if (m_instance) + break; + } - m_instance = classInfo->CreateObject(); + if (!m_instance) + { + wxString name = node->GetPropVal(wxT("name"), wxEmptyString); + wxLogError(_("Subclass '%s' not found for resource '%s', not subclassing!"), + subclass.c_str(), name.c_str()); + } + } } m_node = node; @@ -1167,11 +1206,13 @@ public: wxXmlResourceModule() {} bool OnInit() { + wxXmlResource::AddSubclassFactory(new wxXmlSubclassFactoryCXX); return TRUE; } void OnExit() { delete wxXmlResource::Set(NULL); + wxDELETE(wxXmlResource::ms_subclassFactories); CleanXRCID_Records(); } };