Don't ignore path when prompting for file in SaveAs()

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@51133 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/docview.cpp

@@ -296,8 +296,12 @@ bool wxDocument::SaveAs()
 #else
     wxString filter = docTemplate->GetFileFilter() ;
 #endif
+    wxString defaultDir = docTemplate->GetDirectory();
+    if (defaultDir.IsEmpty())
+        defaultDir = wxPathOnly(GetFilename());
+
     wxString tmp = wxFileSelector(_("Save as"),
-            docTemplate->GetDirectory(),
+            defaultDir,
             wxFileNameFromPath(GetFilename()),
             docTemplate->GetDefaultExtension(),
             filter,