added interface headers with latest discussed changes

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@52381 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/html/htmlfilt.h

@@ -0,0 +1,43 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        html/htmlfilt.h
+// Purpose:     documentation for wxHtmlFilter class
+// Author:      wxWidgets team
+// RCS-ID:      $Id$
+// Licence:     wxWindows license
+/////////////////////////////////////////////////////////////////////////////
+
+/**
+    @class wxHtmlFilter
+    @headerfile htmlfilt.h wx/html/htmlfilt.h
+    
+    This class is the parent class of input filters for wxHtmlWindow.
+    It allows you to read and display files of different file formats.
+    
+    @library{wxhtml}
+    @category{FIXME}
+    
+    @seealso
+    Overview
+*/
+class wxHtmlFilter : public wxObject
+{
+public:
+    /**
+        Constructor.
+    */
+    wxHtmlFilter();
+
+    /**
+        Returns @true if this filter is capable of reading file @e file.
+        
+        Example:
+    */
+    bool CanRead(const wxFSFile& file);
+
+    /**
+        Reads the file and returns string with HTML document.
+        
+        Example:
+    */
+    wxString ReadFile(const wxFSFile& file);
+};