[pybliographer] ui: Migrate error dialog from gnome to gtk

[Germán Poo-Caamaño <gpoo src gnome org>]

commit 8f9163919d10019776196d87d436eb0ed4800a96
Author: Germán Poo-Caamaño <gpoo gnome org>
Date:   Sat Mar 24 17:48:38 2018 -0300

    ui: Migrate error dialog from gnome to gtk

 Pyblio/GnomeUI/Editor.py |   39 ++++++++++++++++++++-------------------
 Pyblio/GnomeUI/Utils.py  |   10 ++++++++++
 2 files changed, 30 insertions(+), 19 deletions(-)
---
diff --git a/Pyblio/GnomeUI/Editor.py b/Pyblio/GnomeUI/Editor.py
index 8f3e7c3..bc12e5c 100644
--- a/Pyblio/GnomeUI/Editor.py
+++ b/Pyblio/GnomeUI/Editor.py
@@ -28,7 +28,7 @@ import copy, gobject, gtk, re, string
 from gnome import ui
 
 from Pyblio import Base, Config, Connector, Exceptions, Fields, Key, Types
-from Pyblio.GnomeUI import Common, Compat, FieldsInfo, FileSelector, Mime, Utils
+from Pyblio.GnomeUI import Common, FieldsInfo, FileSelector, Mime, Utils
 
 key_re = re.compile("^[\w:_+-.()/]+$")
 
@@ -353,24 +353,24 @@ class Date (BaseField):
         if text != '':
             try: day = int (text)
             except ValueError:
-                Compat.error_dialog_parented (_("Invalid day field in date"),
-                                                self.day.get_toplevel ())
+                Utils.error_dialog_s(self.day.get_toplevel(),
+                                    ("Invalid day field in date"))
                 return -1
         
         text = string.strip (self.month.get_chars (0, -1)).encode ('latin-1')
         if text != '':
             try: month = int (text)
             except ValueError, err:
-                Compat.error_dialog_parented (_("Invalid month field in date"),
-                                                self.day.get_toplevel ())
+                Utils.error_dialog_s(self.day.get_toplevel(),
+                                    ("Invalid day field in date"))
                 return -1
         
         text = string.strip (self.year.get_chars (0, -1)).encode ('latin-1')
         if text != '':
             try: year = int (text)
             except ValueError: 
-                Compat.error_dialog_parented (_("Invalid year field in date"),
-                                                self.day.get_toplevel ())
+                Utils.error_dialog_s(self.day.get_toplevel(),
+                                    ("Invalid day field in date"))
                 return -1
         
         if self.initial == (day, month, year): return 0
@@ -382,8 +382,8 @@ class Date (BaseField):
         try:
             entry [self.field] = Fields.Date ((year, month, day))
         except Exceptions.DateError, error:
-            Compat.error_dialog_parented (str (error),
-                                            self.day.get_toplevel ())
+            Utils.error_dialog_s(self.day.get_toplevel(),
+                                 str(error))
             return -1
         return 1
 
@@ -906,17 +906,17 @@ class RealEditor (Connector.Publisher):
             modified = True
         else:
             if not key_re.match (key):
-                Compat.error_dialog_parented (
-                    _("Invalid key format"), self.w.get_toplevel ())
+                Utils.error_dialog_s(self.w.get_toplevel(),
+                                     _("Invalid key format"))
                 return None
 
             key = Key.Key (database, key)
 
             if key != self.entry.key:
                 if database.has_key (key):
-                     Compat.error_dialog_parented (
-                         _("Key “%s” already exists") % str (key.key),
-                         self.w.get_toplevel ())
+                     Utils.error_dialog_s(
+                         self.w.get_toplevel(),
+                         _("Key “%s” already exists") % str (key.key))
                      return None
                 
                 self.entry.key = key
@@ -931,9 +931,10 @@ class RealEditor (Connector.Publisher):
             except UnicodeError:
                 f = Types.get_field(item.field)
                 
-                Compat.error_dialog_parented(
+                Utils.error_dialog_s(
+                    self.w.get_toplevel(),
                     _("The “%s” field contains a non Latin-1 symbol") %
-                    f.name, self.w.get_toplevel())
+                    f.name)
                 return None
             
             if result == -1: return None
@@ -993,9 +994,9 @@ class NativeEditor(Connector.Publisher):
         try:
             text = text.encode('latin-1')
         except UnicodeError:
-            Compat.error_dialog_parented(
-                _("Your text contains non Latin-1 symbols"),
-                self.w.get_toplevel())
+            Utils.error_dialog_s(
+                self.w.get_toplevel(),
+                _("Your text contains non Latin-1 symbols"))
             return None
         try:
             new = self.database.create_native(text)
diff --git a/Pyblio/GnomeUI/Utils.py b/Pyblio/GnomeUI/Utils.py
index bf0a78c..ff52231 100644
--- a/Pyblio/GnomeUI/Utils.py
+++ b/Pyblio/GnomeUI/Utils.py
@@ -218,3 +218,13 @@ def error_dialog (title, err, parent = None):
     
     return
 
+
+def error_dialog_s(parent, primary, secondary=None):
+    dialog = gtk.MessageDialog(parent,
+                               gtk.DIALOG_MODAL | gtk.DIALOG_DESTROY_WITH_PARENT,
+                               gtk.MESSAGE_ERROR,
+                               gtk.BUTTONS_CANCEL, primary)
+    if secondary:
+        dialog.format_secondary_text(secondary)
+    dialog.run()
+    dialog.destroy()