<interface>
  <object class="GtkWindow" id="window">
    <property name="default-width">600</property>
    <property name="default-height">400</property>
    <property name="icon-name">preferences-desktop-font</property>
    <child type="titlebar">
      <object class="GtkBox">
        <property name="visible">True</property>
        <property name="orientation">horizontal</property>
        <child>
          <object class="GtkHeaderBar" id="sidebar-header">
            <property name="visible">True</property>
            <child>
              <object class="GtkCheckButton">
                <property name="visible">True</property>
                <property name="valign">center</property>
              </object>
              <packing>
                <property name="pack-type">end</property>
              </packing>
            </child>
          </object>
        </child>
        <child>
          <object class="GtkSeparator">
            <property name="visible">True</property>
            <property name="orientation">vertical</property>
          </object>
        </child>
        <child>
          <object class="GtkHeaderBar" id="main-header">
            <property name="visible">True</property>
            <property name="hexpand">True</property>
            <child>
              <object class="GtkBox">
                <property name="visible">True</property>
                <property name="orientation">horizontal</property>
                <style>
                  <class name="linked"/>
                </style>
                <child>
                  <object class="GtkButton">
                    <property name="visible">True</property>
                    <property name="label">&lt;</property>
                    <property name="valign">center</property>
                  </object>
                </child>
                <child>
                  <object class="GtkButton">
                    <property name="visible">True</property>
                    <property name="label">&gt;</property>
                    <property name="valign">center</property>
                  </object>
                </child>
              </object>
              <packing>
                <property name="pack-type">start</property>
              </packing>
            </child>
          </object>
        </child>
      </object>
    </child>
    <child>
      <object class="GtkBox">
        <property name="visible">True</property>
        <property name="orientation">horizontal</property>
        <child>
          <object class="GtkListBox" id="sidebar-content">
            <property name="visible">True</property>
            <property name="selection-mode">none</property>
            <child>
              <object class="GtkLabel">
                <property name="visible">True</property>
                <property name="label">Bla</property>
                <property name="xalign">0</property>
              </object>
            </child>
            <child>
              <object class="GtkLabel">
                <property name="visible">True</property>
                <property name="label">Bla bla</property>
                <property name="xalign">0</property>
              </object>
            </child>
            <child>
              <object class="GtkLabel">
                <property name="visible">True</property>
                <property name="label">Bla bla bla</property>
                <property name="xalign">0</property>
              </object>
            </child>
            <child>
              <object class="GtkLabel">
                <property name="visible">True</property>
                <property name="label">Bla bla bla bla</property>
                <property name="xalign">0</property>
              </object>
            </child>
          </object>
        </child>
        <child>
          <object class="GtkScrolledWindow" id="main-content">
            <property name="visible">True</property>
            <property name="hexpand">True</property>
            <property name="vexpand">True</property>
            <property name="hscrollbar-policy">always</property>
            <property name="vscrollbar-policy">always</property>
            <child>
              <object class="GtkGrid">
                <property name="visible">True</property>
                <property name="margin">20</property>
                <property name="row-spacing">10</property>
                <property name="column-spacing">10</property>
                <child>
                  <object class="GtkLabel">
                    <property name="visible">True</property>
                    <property name="label">Layout</property>
                  </object>
                  <packing>
                    <property name="left-attach">0</property>
                    <property name="top-attach">0</property>
                  </packing>
                </child>
                <child>
                  <object class="GtkEntry" id="layout-entry">
                    <property name="visible">True</property>
                    <property name="width-chars">25</property>
                  </object>
                  <packing>
                    <property name="left-attach">1</property>
                    <property name="top-attach">0</property>
                  </packing>
                </child>
                <child>
                  <object class="GtkLabel">
                    <property name="visible">True</property>
                    <property name="label">Decorations</property>
                  </object>
                  <packing>
                    <property name="left-attach">0</property>
                    <property name="top-attach">1</property>
                  </packing>
                </child>
                <child>
                  <object class="GtkCheckButton" id="decorations">
                    <property name="visible">True</property>
                  </object>
                  <packing>
                    <property name="left-attach">1</property>
                    <property name="top-attach">1</property>
                  </packing>
                </child>
              </object>
            </child>
          </object>
        </child>
      </object>
    </child>
  </object>
  <object class="GtkSizeGroup">
    <property name="mode">horizontal</property>
    <widgets>
      <widget name="sidebar-header"/>
      <widget name="sidebar-content"/>
    </widgets>
  </object>
  <object class="GtkSizeGroup">
    <property name="mode">horizontal</property>
    <widgets>
      <widget name="main-header"/>
      <widget name="main-content"/>
    </widgets>
  </object>
</interface>