Fix text text changed events sending in OS X combo box and text control.

Don't duplicate needlessly wxTextEntry functionality in wxTextCtrl.

Don't clear the combobox text entry part twice in wxComboBox::DoClear(), it is
supposed to only clear the item container contents as the base class Clear()
already calls wxTextEntry::Clear().

Do send text updated events from wxTextEntry itself as it applies to
wxComboBox just as well as to wxTextCtrl.

The unit tests now pass under wxOSX/Cocoa, not breaking them again would be
appreciated.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63881 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/osx/textctrl.h

@@ -100,10 +100,6 @@ public:
     virtual void Cut();
     virtual void Paste();
     
-    virtual void WriteText(const wxString& text);
-    virtual void Clear();
-    virtual void Remove(long from, long to);
-
     // Implementation
     // --------------
     virtual void Command(wxCommandEvent& event);
@@ -148,17 +144,16 @@ protected:
     // flag is set to true when the user edits the controls contents
     bool m_dirty;
 
-    virtual void EnableTextChangedEvents(bool enable)
+    virtual void EnableTextChangedEvents(bool WXUNUSED(enable))
     {
-        m_triggerUpdateEvents = enable;
+        // nothing to do here as the events are never generated when we change
+        // the controls value programmatically anyhow
     }
 
-    bool m_triggerUpdateEvents ;
-
 private :
-  wxMenu  *m_privateContextMenu;
+    wxMenu  *m_privateContextMenu;
 
-  DECLARE_EVENT_TABLE()
+    DECLARE_EVENT_TABLE()
 };
 
 #endif // _WX_TEXTCTRL_H_