don't return hardcoded constants for empty renderers, introduce wxDVC_DEFAULT_RENDERE...

[wxWidgets.git] / include / wx / event.h

diff --git a/include/wx/event.h b/include/wx/event.h
index ee9d6b0b20e45de71366d7ee2d0cdeb17e4cdab7..ad6469b9582853ad86897234211a7af1cf6f8efd 100644 (file)
--- a/include/wx/event.h
+++ b/include/wx/event.h
@@ -3067,7 +3067,7 @@ public:
     //
     // It is meant to be called from ProcessEvent() only and is not virtual,
     // additional event handlers can be hooked into the normal event processing
-    // logic using TryValidator() hook.
+    // logic using TryBefore() and TryAfter() hooks.
     bool ProcessEventHere(wxEvent& event);
 
 
@@ -3090,21 +3090,25 @@ protected:
     // hooks for wxWindow used by ProcessEvent()
     // -----------------------------------------
 
-    // This one is called before trying our own event table to allow plugging
-    // in the validators.
-    //
-    // NB: This method is intentionally *not* inside wxUSE_VALIDATORS!
-    //     It is part of wxBase which doesn't use validators and the code
-    //     is compiled out when building wxBase w/o GUI classes, which affects
-    //     binary compatibility and wxBase library can't be used by GUI
-    //     ports.
-    virtual bool TryValidator(wxEvent& WXUNUSED(event)) { return false; }
+    // this one is called before trying our own event table to allow plugging
+    // in the event handlers overriding the default logic, this is used by e.g.
+    // validators.
+    virtual bool TryBefore(wxEvent& event);
 
     // this one is called after failing to find the event handle in our own
     // table to give a chance to the other windows to process it
     //
     // base class implementation passes the event to wxTheApp
-    virtual bool TryParent(wxEvent& event);
+    virtual bool TryAfter(wxEvent& event);
+
+#ifdef WXWIN_COMPATIBILITY_2_8
+    // deprecated method: override TryBefore() instead of this one
+    wxDEPRECATED_BUT_USED_INTERNALLY_INLINE(
+        virtual bool TryValidator(wxEvent& WXUNUSED(event)), return false; )
+
+    wxDEPRECATED_BUT_USED_INTERNALLY_INLINE(
+        virtual bool TryParent(wxEvent& event), return DoTryApp(event); )
+#endif // WXWIN_COMPATIBILITY_2_8
 
 
     static const wxEventTable sm_eventTable;
@@ -3152,6 +3156,9 @@ protected:
     wxEventConnectionRef *FindRefInTrackerList(wxEvtHandler *eventSink);
 
 private:
+    // pass the event to wxTheApp instance, called from TryAfter()
+    bool DoTryApp(wxEvent& event);
+
     DECLARE_DYNAMIC_CLASS_NO_COPY(wxEvtHandler)
 };
 
@@ -3797,6 +3804,41 @@ typedef void (wxEvtHandler::*wxClipboardTextEventFunction)(wxClipboardTextEvent&
 // Helper functions
 // ----------------------------------------------------------------------------
 
+// This is an ugly hack to allow the use of Bind() instead of Connect() inside
+// the library code if the library was built with support for it, here is how
+// it is used:
+//
+// class SomeEventHandlingClass : wxBIND_OR_CONNECT_HACK_BASE_CLASS
+//                                public SomeBaseClass
+// {
+// public:
+//     SomeEventHandlingClass(wxWindow *win)
+//     {
+//         // connect to the event for the given window
+//         wxBIND_OR_CONNECT_HACK(win, wxEVT_SOMETHING, wxSomeEventHandler,
+//                                SomeEventHandlingClass::OnSomeEvent, this);
+//     }
+//
+// private:
+//     void OnSomeEvent(wxSomeEvent&) { ... }
+// };
+//
+// This is *not* meant to be used by library users, it is only defined here
+// (and not in a private header) because the base class must be visible from
+// other public headers, please do NOT use this in your code, it will be
+// removed from future wx versions without warning.
+#if wxEVENTS_COMPATIBILITY_2_8
+    #define wxBIND_OR_CONNECT_HACK_BASE_CLASS public wxEvtHandler,
+    #define wxBIND_OR_CONNECT_HACK_ONLY_BASE_CLASS : public wxEvtHandler
+    #define wxBIND_OR_CONNECT_HACK(w, evt, handler, func, obj) \
+        win->Connect(evt, handler(func), NULL, obj)
+#else // wxEVENTS_COMPATIBILITY_2_8
+    #define wxBIND_OR_CONNECT_HACK_BASE_CLASS
+    #define wxBIND_OR_CONNECT_HACK_ONLY_BASE_CLASS
+    #define wxBIND_OR_CONNECT_HACK(w, evt, handler, func, obj) \
+        win->Bind(evt, &func, obj)
+#endif // wxEVENTS_COMPATIBILITY_2_8/!wxEVENTS_COMPATIBILITY_2_8
+
 #if wxUSE_GUI
 
 // Find a window with the focus, that is also a descendant of the given window.