gnome-control-center/panels/common/cc-language-chooser.ui

<?xml version="1.0" encoding="UTF-8"?>
<interface>
  <!-- interface-requires gtk+ 3.0 -->
  <template class="CcLanguageChooser" parent="GtkDialog">
    <property name="title" translatable="yes">Select Language</property>
    <property name="modal">True</property>
    <property name="destroy_with_parent">True</property>
    <property name="default_width">400</property>
    <property name="default_height">350</property>
    <child type="action">
      <object class="GtkButton" id="select_button">
        <property name="label" translatable="yes">_Select</property>
        <property name="visible">True</property>
        <property name="sensitive">False</property>
        <property name="can_focus">True</property>
        <property name="can_default">True</property>
        <property name="receives_default">True</property>
        <property name="use_underline">True</property>
        <property name="valign">center</property>
      </object>
    </child>
    <child type="action">
      <object class="GtkButton" id="cancel_button">
        <property name="label" translatable="yes">_Cancel</property>
        <property name="visible">True</property>
        <property name="can_focus">True</property>
        <property name="use_underline">True</property>
        <property name="valign">center</property>
      </object>
    </child>
    <child internal-child="vbox">
      <object class="GtkBox">
        <property name="visible">True</property>
        <property name="orientation">vertical</property>
        <property name="spacing">0</property>
        <property name="border-width">0</property>
        <child>
          <object class="GtkSearchBar" id="search_bar">
            <property name="visible">True</property>
            <property name="hexpand">True</property>
            <child>
              <object class="GtkSearchEntry" id="language_filter_entry">
                <property name="visible">True</property>
                <property name="width_chars">30</property>
              </object>
            </child>
          </object>
        </child>
        <child>
          <object class="GtkScrolledWindow">
            <property name="visible">True</property>
            <property name="hscrollbar-policy">never</property>
            <property name="vscrollbar-policy">automatic</property>
            <property name="propagate-natural-height">True</property>
            <property name="min-content-height">200</property>
            <child>
              <object class="GtkListBox" id="language_listbox">
                <property name="visible">True</property>
                <property name="can-focus">True</property>
                <property name="vexpand">True</property>
                <property name="halign">fill</property>
                <property name="valign">fill</property>
              </object>
            </child>
          </object>
        </child>
      </object>
    </child>
    <action-widgets>
      <action-widget response="-5" default="true">select_button</action-widget>
      <action-widget response="-6">cancel_button</action-widget>
    </action-widgets>
  </template>
</interface>