wrap max-width-chars in a custom widget to avoid it getting dropped silently

Change-Id: I7ccbd4b2e1aebc84a59bb9000e7322c8aa62ffd7

extras/source/glade/libreoffice-catalog.xml

@@ -57,5 +57,20 @@
     <glade-widget-class title="Table Container" name="svxcorelo-SvxSimpleTableContainer"
                         generic-name="Simple Table Container" parent="GtkTreeView"
                         icon-name="widget-gtk-treeview"/>
+
+    <glade-widget-class title="VclComboBoxText" name="VclComboBoxText"
+                        generic-name="ComboBoxText" parent="GtkComboBoxText"
+                        icon-name="widget-gtk-comboboxtext">
+      <properties>
+        <property save="True" query="False" id="max-width-chars" default="-1" name="Maximum Width in Characters">
+          <parameter-spec>
+            <type>GParamInt</type>
+            <min>-1</min>
+          </parameter-spec>
+          <tooltip>The desired maximum width of the ComboBox, in characters</tooltip>
+        </property>
+      </properties>
+    </glade-widget-class>
+
   </glade-widget-classes>
 </glade-catalog>

sc/uiconfig/scalc/ui/sortoptionspage.ui

@@ -164,7 +164,7 @@
                   </packing>
                 </child>
                 <child>
-                  <object class="GtkComboBox" id="sortuserlb">
+                  <object class="VclComboBoxText" id="sortuserlb">
                     <property name="visible">True</property>
                     <property name="can_focus">False</property>
                     <property name="margin_left">20</property>

vcl/source/window/builder.cxx

@@ -1060,7 +1060,7 @@ Window *VclBuilder::makeObject(Window *pParent, const OString &name, const OStri
     }
     else if (name == "GtkLinkButton")
         pWindow = new FixedHyperlink(pParent, WB_CENTER|WB_VCENTER|WB_3DLOOK|WB_NOLABEL);
-    else if ((name == "GtkComboBox") || (name == "GtkComboBoxText"))
+    else if ((name == "GtkComboBox") || (name == "GtkComboBoxText") || (name == "VclComboBoxText"))
     {
         extractModel(id, rMap);
         if (extractEntry(rMap))