Many changes for wxInputHandler creation mainly related to:

1. Allow the theme to create only the input handlers it customizes instead
   of forcing it to always create a handler even if the standard one is used:
   wxTheme::GetInputHandler() now takes wxInputConsumer to make this possible

2. Prefer delegation to inheritance when creating customized input handlers,
   almost all (except for wxStdScrollbarInputHandler) standard handler classes
   are now private, use wxClassName::GetStdInputHandler() to retrieve the
   standard handler for any class or polymorphic DoGetStdInputHandler()


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41227 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/univ/button.cpp

@@ -39,6 +39,34 @@
 #include "wx/univ/colschem.h"
 #include "wx/stockitem.h"
 
+// ----------------------------------------------------------------------------
+// wxStdButtonInputHandler: translates SPACE and ENTER keys and the left mouse
+// click into button press/release actions
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxStdButtonInputHandler : public wxStdInputHandler
+{
+public:
+    wxStdButtonInputHandler(wxInputHandler *inphand);
+
+    virtual bool HandleKey(wxInputConsumer *consumer,
+                           const wxKeyEvent& event,
+                           bool pressed);
+    virtual bool HandleMouse(wxInputConsumer *consumer,
+                             const wxMouseEvent& event);
+    virtual bool HandleMouseMove(wxInputConsumer *consumer,
+                                 const wxMouseEvent& event);
+    virtual bool HandleFocus(wxInputConsumer *consumer,
+                             const wxFocusEvent& event);
+    virtual bool HandleActivation(wxInputConsumer *consumer, bool activated);
+
+private:
+    // the window (button) which has capture or NULL and the flag telling if
+    // the mouse is inside the button which captured it or not
+    wxWindow *m_winCapture;
+    bool      m_winHasMouse;
+};
+
 // ----------------------------------------------------------------------------
 // constants
 // ----------------------------------------------------------------------------
@@ -272,6 +300,14 @@ bool wxButton::PerformAction(const wxControlAction& action,
     return true;
 }
 
+/* static */
+wxInputHandler *wxButton::GetStdInputHandler(wxInputHandler *handlerDef)
+{
+    static wxStdButtonInputHandler s_handlerBtn(handlerDef);
+
+    return &s_handlerBtn;
+}
+
 // ----------------------------------------------------------------------------
 // misc
 // ----------------------------------------------------------------------------