[glade] Improved pango text integer attributes editors. Make the spin button numeric and clear the attr if t

[Juan Pablo Ugarte <jpu src gnome org>]

commit 1fd9d318d3e60313ba33f9dc9000bfc4c8a3f182
Author: Juan Pablo Ugarte <juanpablougarte gmail com>
Date:   Fri Sep 13 23:55:32 2013 -0300

    Improved pango text integer attributes editors.
    Make the spin button numeric and clear the attr if the new text is an empty string!
    
    This should be enough to close Bug 679006
    "The "size" attribute for labels only accepts integer values (not strings like "larger")"

 plugins/gtk+/glade-attributes.c |   13 ++++++++++++-
 1 files changed, 12 insertions(+), 1 deletions(-)
---
diff --git a/plugins/gtk+/glade-attributes.c b/plugins/gtk+/glade-attributes.c
index 41cc75f..33e7e2b 100644
--- a/plugins/gtk+/glade-attributes.c
+++ b/plugins/gtk+/glade-attributes.c
@@ -820,7 +820,7 @@ value_combo_spin_edited (GtkCellRendererText *cell,
   gtk_tree_model_get (eprop_attrs->model, &iter, COLUMN_TYPE, &type, -1);
 
   /* Reset the column */
-  if (new_text && strcmp (new_text, _("None")) == 0)
+  if (new_text && (*new_text == '\0' || strcmp (new_text, _("None")) == 0))
     {
       gtk_list_store_set (GTK_LIST_STORE (eprop_attrs->model), &iter,
                           COLUMN_TEXT, _("<Enter Value>"),
@@ -839,6 +839,15 @@ value_combo_spin_edited (GtkCellRendererText *cell,
 
 }
 
+static void
+value_combo_spin_editing_started (GtkCellRenderer *cell,
+                                  GtkCellEditable *editable,
+                                  const gchar     *path)
+{
+  if (GTK_IS_SPIN_BUTTON (editable))
+    gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (editable), TRUE);
+}
+
 static GtkWidget *
 glade_eprop_attrs_view (GladeEditorProperty *eprop)
 {
@@ -953,6 +962,8 @@ glade_eprop_attrs_view (GladeEditorProperty *eprop)
                                        "digits", COLUMN_SPIN_DIGITS, NULL);
   g_signal_connect (G_OBJECT (renderer), "edited",
                     G_CALLBACK (value_combo_spin_edited), eprop);
+  g_signal_connect (G_OBJECT (renderer), "editing-started",
+                    G_CALLBACK (value_combo_spin_editing_started), NULL);
 
   gtk_tree_view_column_set_expand (GTK_TREE_VIEW_COLUMN (column), TRUE);
   gtk_tree_view_append_column (GTK_TREE_VIEW (view_widget), column);