implemented URLs blocking in wxHtmlWindow

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13666 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/html/htmlpars.h

@@ -48,6 +48,10 @@ public:
 
     wxFileSystem* GetFS() const { return m_FS; }
 
+    // Returns TRUE if the parser is allowed to open given URL (may be forbidden
+    // for security reasons)    
+    virtual bool CanOpenURL(const wxString& url) const { return TRUE; }
+
     // You can simply call this method when you need parsed output.
     // This method does these things:
     // 1. call InitParser(source);