+                    return false;
+            }
+        }
+    }
+    return AddBook(wxFileName(actualFilename));
+}
+
+bool wxHtmlHelpController::LoadFile(const wxString& WXUNUSED(file))
+{
+    // Don't reload the file or we'll have it appear again, presumably.
+    return true;
+}
+
+bool wxHtmlHelpController::DisplaySection(int sectionNo)
+{
+    return Display(sectionNo);
+}
+
+bool wxHtmlHelpController::DisplayTextPopup(const wxString& text, const wxPoint& WXUNUSED(pos))
+{
+#if wxUSE_TIPWINDOW
+    static wxTipWindow* s_tipWindow = NULL;
+
+    if (s_tipWindow)
+    {
+        // Prevent s_tipWindow being nulled in OnIdle,
+        // thereby removing the chance for the window to be closed by ShowHelp
+        s_tipWindow->SetTipWindowPtr(NULL);
+        s_tipWindow->Close();
+    }
+    s_tipWindow = NULL;
+
+    if ( !text.empty() )
+    {
+        s_tipWindow = new wxTipWindow(wxTheApp->GetTopWindow(), text, 100, & s_tipWindow);
+
+        return true;
+    }
+#else
+    wxUnusedVar(text);
+#endif // wxUSE_TIPWINDOW
+
+    return false;
+}
+
+void wxHtmlHelpController::SetHelpWindow(wxHtmlHelpWindow* helpWindow)
+{
+    m_helpWindow = helpWindow;
+    if (helpWindow)
+        helpWindow->SetController(this);
+}
+
+void wxHtmlHelpController::SetFrameParameters(const wxString& title,
+                                   const wxSize& size,
+                                   const wxPoint& pos,
+                                   bool WXUNUSED(newFrameEachTime))
+{
+    SetTitleFormat(title);
+    wxHtmlHelpFrame* frame = wxDynamicCast(FindTopLevelWindow(), wxHtmlHelpFrame);
+    wxHtmlHelpDialog* dialog = wxDynamicCast(FindTopLevelWindow(), wxHtmlHelpDialog);
+    if (frame)
+        frame->SetSize(pos.x, pos.y, size.x, size.y);
+    else if (dialog)
+        dialog->SetSize(pos.x, pos.y, size.x, size.y);
+}
+
+wxFrame* wxHtmlHelpController::GetFrameParameters(wxSize *size,
+                                   wxPoint *pos,
+                                   bool *newFrameEachTime)
+{
+    if (newFrameEachTime)
+        (* newFrameEachTime) = false;
+
+    wxHtmlHelpFrame* frame = wxDynamicCast(FindTopLevelWindow(), wxHtmlHelpFrame);
+    wxHtmlHelpDialog* dialog = wxDynamicCast(FindTopLevelWindow(), wxHtmlHelpDialog);
+    if (frame)
+    {
+        if (size)
+            (* size) = frame->GetSize();
+        if (pos)
+            (* pos) = frame->GetPosition();
+        return frame;
+    }
+    else if (dialog)
+    {
+        if (size)
+            (* size) = dialog->GetSize();
+        if (pos)
+            (* pos) = dialog->GetPosition();
+        return NULL;
+    }
+    return NULL;
+}
+
+bool wxHtmlHelpController::Quit()
+{
+    DestroyHelpWindow();
+    return true;
+}
+
+// Make the help controller's frame 'modal' if
+// needed
+void wxHtmlHelpController::MakeModalIfNeeded()
+{
+    if ((m_FrameStyle & wxHF_EMBEDDED) == 0)
+    {
+        wxHtmlHelpFrame* frame = wxDynamicCast(FindTopLevelWindow(), wxHtmlHelpFrame);
+        wxHtmlHelpDialog* dialog = wxDynamicCast(FindTopLevelWindow(), wxHtmlHelpDialog);
+        if (frame)
+            frame->AddGrabIfNeeded();
+        else if (dialog && (m_FrameStyle & wxHF_MODAL))
+        {
+            dialog->ShowModal();
+        }
+    }
+}
+
+bool wxHtmlHelpController::Display(const wxString& x)
+{
+    CreateHelpWindow();
+    bool success = m_helpWindow->Display(x);
+    MakeModalIfNeeded();
+    return success;
+}
+
+bool wxHtmlHelpController::Display(int id)
+{
+    CreateHelpWindow();
+    bool success = m_helpWindow->Display(id);
+    MakeModalIfNeeded();
+    return success;
+}
+
+bool wxHtmlHelpController::DisplayContents()
+{
+    CreateHelpWindow();
+    bool success = m_helpWindow->DisplayContents();
+    MakeModalIfNeeded();
+    return success;
+}
+
+bool wxHtmlHelpController::DisplayIndex()
+{
+    CreateHelpWindow();
+    bool success = m_helpWindow->DisplayIndex();
+    MakeModalIfNeeded();
+    return success;
+}
+
+bool wxHtmlHelpController::KeywordSearch(const wxString& keyword,
+                                         wxHelpSearchMode mode)
+{
+    CreateHelpWindow();
+    bool success = m_helpWindow->KeywordSearch(keyword, mode);
+    MakeModalIfNeeded();
+    return success;
+}
+
+/*
+ * wxHtmlModalHelp
+ * A convenience class, to use like this:
+ *
+ * wxHtmlModalHelp help(parent, helpFile, topic);
+ */
+
+wxHtmlModalHelp::wxHtmlModalHelp(wxWindow* parent, const wxString& helpFile, const wxString& topic, int style)
+{
+    // Force some mandatory styles
+    style |= wxHF_DIALOG | wxHF_MODAL;
+
+    wxHtmlHelpController controller(style, parent);
+    controller.Initialize(helpFile);
+
+    if (topic.IsEmpty())
+        controller.DisplayContents();
+    else
+        controller.DisplaySection(topic);
+}
+
+#endif // wxUSE_WXHTML_HELP
+