[gnome-calendar/calendar-editor] source-dialog: fix insensitive button when addin file or local source

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit c79bf51db0b765ef3ddbcedb4faffb194bea9bd3
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sun Apr 19 15:08:38 2015 -0300

    source-dialog: fix insensitive button when addin file or local source

 src/gcal-source-dialog.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/src/gcal-source-dialog.c b/src/gcal-source-dialog.c
index dbe3a4a..26f1f4b 100644
--- a/src/gcal-source-dialog.c
+++ b/src/gcal-source-dialog.c
@@ -875,6 +875,7 @@ static void
 calendar_file_selected (GtkFileChooser       *button,
                         gpointer              user_data)
 {
+  GcalSourceDialogPrivate *priv = GCAL_SOURCE_DIALOG (user_data)->priv;
   ESourceExtension *ext;
   ESource *source;
   GFile *file;
@@ -903,6 +904,8 @@ calendar_file_selected (GtkFileChooser       *button,
   // Jump to the edit page
   gcal_source_dialog_set_source (GCAL_SOURCE_DIALOG (user_data), source);
   gcal_source_dialog_set_mode (GCAL_SOURCE_DIALOG (user_data), GCAL_SOURCE_DIALOG_MODE_CREATE);
+
+  gtk_widget_set_sensitive (priv->add_button, TRUE);
 }
 
 /**
@@ -1069,6 +1072,7 @@ on_local_activated (GSimpleAction *action,
                     GVariant      *param,
                     gpointer       user_data)
 {
+  GcalSourceDialogPrivate *priv = GCAL_SOURCE_DIALOG (user_data)->priv;
   ESourceExtension *ext;
   ESource *source;
 
@@ -1088,6 +1092,8 @@ on_local_activated (GSimpleAction *action,
   // Jump to the edit page
   gcal_source_dialog_set_source (GCAL_SOURCE_DIALOG (user_data), source);
   gcal_source_dialog_set_mode (GCAL_SOURCE_DIALOG (user_data), GCAL_SOURCE_DIALOG_MODE_CREATE);
+
+  gtk_widget_set_sensitive (priv->add_button, TRUE);
 }
 
 /**