Added generic LoadObject methods that can load any classtype from a

resources and return it as a wxObject (Assuming there is a handler for
it.)

Enabled wxFrames and wxDialogs to be loaded using a new instance
rather than only with existing instances.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@16720 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

contrib/include/wx/xrc/xmlres.h

@@ -128,6 +128,9 @@ public:
     // all controls used within the resource.
     void AddHandler(wxXmlResourceHandler *handler);
 
+    // Add a new handler at the begining of the handler list
+    void InsertHandler(wxXmlResourceHandler *handler);
+
     // Removes all handlers
     void ClearHandlers();
 
@@ -165,8 +168,20 @@ public:
     bool LoadPanel(wxPanel *panel, wxWindow *parent, const wxString& name);
 
     // Loads a frame.
+    wxFrame *LoadFrame(wxWindow* parent, const wxString& name);
     bool LoadFrame(wxFrame* frame, wxWindow *parent, const wxString& name);
 
+    // Load an object from the resource specifying both the resource name and
+    // the classname.  This lets you load nonstandard container windows.
+    wxObject *LoadObject(wxWindow *parent, const wxString& name,
+                         const wxString& classname);
+
+    // Load an object from the resource specifying both the resource name and
+    // the classname.  This form lets you finish the creation of an existing
+    // instance.
+    bool LoadObject(wxObject *instance, wxWindow *parent, const wxString& name,
+                    const wxString& classname);
+
     // Loads a bitmap resource from a file.
     wxBitmap LoadBitmap(const wxString& name);
 

contrib/src/xrc/xh_dlg.cpp

@@ -47,9 +47,7 @@ wxDialogXmlHandler::wxDialogXmlHandler() : wxXmlResourceHandler()
 
 wxObject *wxDialogXmlHandler::DoCreateResource()
 {
-    wxDialog *dlg = wxDynamicCast(m_instance, wxDialog);
+    XRC_MAKE_INSTANCE(dlg, wxDialog);
-    
-    wxASSERT_MSG(dlg, _("XRC resource: Cannot create dialog without instance."));
 
     dlg->Create(m_parentAsWindow,
                 GetID(),

contrib/src/xrc/xh_frame.cpp

@@ -52,9 +52,7 @@ wxFrameXmlHandler::wxFrameXmlHandler() : wxXmlResourceHandler()
 
 wxObject *wxFrameXmlHandler::DoCreateResource()
 {
-    wxFrame *frame = wxDynamicCast(m_instance, wxFrame);
+    XRC_MAKE_INSTANCE(frame, wxFrame);
-    
-    wxASSERT_MSG(frame, _("XRC resource: Cannot create dialog without instance."));
 
     frame->Create(m_parentAsWindow,
                   GetID(),

contrib/src/xrc/xmlres.cpp

@@ -132,6 +132,12 @@ void wxXmlResource::AddHandler(wxXmlResourceHandler *handler)
     handler->SetParentResource(this);
 }
 
+void wxXmlResource::InsertHandler(wxXmlResourceHandler *handler)
+{
+    m_handlers.Insert(handler);
+    handler->SetParentResource(this);
+}
+
 
 
 void wxXmlResource::ClearHandlers()
@@ -188,6 +194,11 @@ bool wxXmlResource::LoadPanel(wxPanel *panel, wxWindow *parent, const wxString&
     return CreateResFromNode(FindResource(name, wxT("wxPanel")), parent, panel) != NULL;
 }
 
+wxFrame *wxXmlResource::LoadFrame(wxWindow* parent, const wxString& name)
+{
+    return (wxFrame*)CreateResFromNode(FindResource(name, wxT("wxFrame")), parent, NULL);
+}
+
 bool wxXmlResource::LoadFrame(wxFrame* frame, wxWindow *parent, const wxString& name)
 {
     return CreateResFromNode(FindResource(name, wxT("wxFrame")), parent, frame) != NULL;
@@ -213,6 +224,18 @@ wxIcon wxXmlResource::LoadIcon(const wxString& name)
     return rt;
 }
 
+
+wxObject *wxXmlResource::LoadObject(wxWindow *parent, const wxString& name, const wxString& classname)
+{
+    return CreateResFromNode(FindResource(name, classname), parent, NULL);
+}
+
+bool wxXmlResource::LoadObject(wxObject *instance, wxWindow *parent, const wxString& name, const wxString& classname)
+{
+    return CreateResFromNode(FindResource(name, classname), parent, instance) != NULL;
+}
+
+
 bool wxXmlResource::AttachUnknownControl(const wxString& name,
                                          wxWindow *control, wxWindow *parent)
 {

include/wx/xrc/xmlres.h

@@ -128,6 +128,9 @@ public:
     // all controls used within the resource.
     void AddHandler(wxXmlResourceHandler *handler);
 
+    // Add a new handler at the begining of the handler list
+    void InsertHandler(wxXmlResourceHandler *handler);
+
     // Removes all handlers
     void ClearHandlers();
 
@@ -165,8 +168,20 @@ public:
     bool LoadPanel(wxPanel *panel, wxWindow *parent, const wxString& name);
 
     // Loads a frame.
+    wxFrame *LoadFrame(wxWindow* parent, const wxString& name);
     bool LoadFrame(wxFrame* frame, wxWindow *parent, const wxString& name);
 
+    // Load an object from the resource specifying both the resource name and
+    // the classname.  This lets you load nonstandard container windows.
+    wxObject *LoadObject(wxWindow *parent, const wxString& name,
+                         const wxString& classname);
+
+    // Load an object from the resource specifying both the resource name and
+    // the classname.  This form lets you finish the creation of an existing
+    // instance.
+    bool LoadObject(wxObject *instance, wxWindow *parent, const wxString& name,
+                    const wxString& classname);
+
     // Loads a bitmap resource from a file.
     wxBitmap LoadBitmap(const wxString& name);
 

src/xrc/xh_dlg.cpp

@@ -47,9 +47,7 @@ wxDialogXmlHandler::wxDialogXmlHandler() : wxXmlResourceHandler()
 
 wxObject *wxDialogXmlHandler::DoCreateResource()
 {
-    wxDialog *dlg = wxDynamicCast(m_instance, wxDialog);
+    XRC_MAKE_INSTANCE(dlg, wxDialog);
-    
-    wxASSERT_MSG(dlg, _("XRC resource: Cannot create dialog without instance."));
 
     dlg->Create(m_parentAsWindow,
                 GetID(),

src/xrc/xh_frame.cpp

@@ -52,9 +52,7 @@ wxFrameXmlHandler::wxFrameXmlHandler() : wxXmlResourceHandler()
 
 wxObject *wxFrameXmlHandler::DoCreateResource()
 {
-    wxFrame *frame = wxDynamicCast(m_instance, wxFrame);
+    XRC_MAKE_INSTANCE(frame, wxFrame);
-    
-    wxASSERT_MSG(frame, _("XRC resource: Cannot create dialog without instance."));
 
     frame->Create(m_parentAsWindow,
                   GetID(),

src/xrc/xmlres.cpp

@@ -132,6 +132,12 @@ void wxXmlResource::AddHandler(wxXmlResourceHandler *handler)
     handler->SetParentResource(this);
 }
 
+void wxXmlResource::InsertHandler(wxXmlResourceHandler *handler)
+{
+    m_handlers.Insert(handler);
+    handler->SetParentResource(this);
+}
+
 
 
 void wxXmlResource::ClearHandlers()
@@ -188,6 +194,11 @@ bool wxXmlResource::LoadPanel(wxPanel *panel, wxWindow *parent, const wxString&
     return CreateResFromNode(FindResource(name, wxT("wxPanel")), parent, panel) != NULL;
 }
 
+wxFrame *wxXmlResource::LoadFrame(wxWindow* parent, const wxString& name)
+{
+    return (wxFrame*)CreateResFromNode(FindResource(name, wxT("wxFrame")), parent, NULL);
+}
+
 bool wxXmlResource::LoadFrame(wxFrame* frame, wxWindow *parent, const wxString& name)
 {
     return CreateResFromNode(FindResource(name, wxT("wxFrame")), parent, frame) != NULL;
@@ -213,6 +224,18 @@ wxIcon wxXmlResource::LoadIcon(const wxString& name)
     return rt;
 }
 
+
+wxObject *wxXmlResource::LoadObject(wxWindow *parent, const wxString& name, const wxString& classname)
+{
+    return CreateResFromNode(FindResource(name, classname), parent, NULL);
+}
+
+bool wxXmlResource::LoadObject(wxObject *instance, wxWindow *parent, const wxString& name, const wxString& classname)
+{
+    return CreateResFromNode(FindResource(name, classname), parent, instance) != NULL;
+}
+
+
 bool wxXmlResource::AttachUnknownControl(const wxString& name,
                                          wxWindow *control, wxWindow *parent)
 {