[ocrfeeder] Replace unimplemented dialog by a message dialog (fixes gb#643919)

[Joaquim Manuel Pereira Rocha <jrocha src gnome org>]

commit 9937c77364fb836ab3069f41bca937c1cd1adad8
Author: Joaquim Rocha <jrocha igalia com>
Date:   Fri Mar 11 22:45:22 2011 +0100

    Replace unimplemented dialog by a message dialog (fixes gb#643919)

 src/ocrfeeder/studio/widgetPresenter.py |   10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)
---
diff --git a/src/ocrfeeder/studio/widgetPresenter.py b/src/ocrfeeder/studio/widgetPresenter.py
index b35d678..c523471 100644
--- a/src/ocrfeeder/studio/widgetPresenter.py
+++ b/src/ocrfeeder/studio/widgetPresenter.py
@@ -1756,10 +1756,12 @@ class OcrManagerDialog(gtk.Dialog):
     def __detectEnginesCb(self, button):
         engines = self.engines_manager.configuration_manager.getEnginesInSystem()
         if not engines:
-            info = InfoDialog(_('No OCR engines were found in the system.\n'
-                                'Please make sure you have OCR engines installed '
-                                'and available.'),
-                              _('No OCR engines available'))
+            info = gtk.MessageDialog(self, gtk.DIALOG_MODAL, gtk.MESSAGE_INFO,
+                                     gtk.BUTTONS_OK)
+            info.set_title(_('No OCR engines available'))
+            info.set_markup(_('No OCR engines were found in the system.\n'
+                              'Please make sure you have OCR engines installed '
+                              'and available.'))
             info.run()
             info.destroy()
             return