Add wxTopLevelWindow::SetRepresentedFilename().

This currently is only implemented under OS X and sets the proxy icon there
but could be implemented to do something useful under the other platforms too
in the future.

Closes #13797.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@70295 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/osx/cocoa/private.h

@@ -239,6 +239,8 @@ public :
     virtual void SetModified(bool modified);
     virtual bool IsModified() const;
 
+    virtual void SetRepresentedFilename(const wxString& filename);
+
     wxNonOwnedWindow*   GetWXPeer() { return m_wxPeer; }
     
     CGWindowLevel   GetWindowLevel() const { return m_macWindowLevel; }

include/wx/osx/core/private.h

@@ -863,6 +863,8 @@ public :
     virtual void SetModified(bool WXUNUSED(modified)) { }
     virtual bool IsModified() const { return false; }
 
+    virtual void SetRepresentedFilename(const wxString& WXUNUSED(filename)) { }
+
 #if wxOSX_USE_IPHONE
     virtual CGFloat GetWindowLevel() const { return 0.0; }
 #else

include/wx/osx/toplevel.h

@@ -77,6 +77,8 @@ public:
     virtual void OSXSetModified(bool modified);
     virtual bool OSXIsModified() const;
 
+    virtual void SetRepresentedFilename(const wxString& filename);
+
 protected:
     // common part of all ctors
     void Init();