gnome-control-center/panels/camera/cc-camera-panel.ui

<?xml version="1.0" encoding="UTF-8"?>
<interface>
  <template class="CcCameraPanel" parent="CcPanel">

    <child type="titlebar-end">
      <object class="GtkSwitch" id="main_switch">
        <accessibility>
          <property name="label" translatable="yes">Enable</property>
        </accessibility>
        <property name="valign">center</property>
      </object>
    </child>

    <child type="content">
      <object class="GtkStack" id="stack">

        <!-- Empty page -->
        <child>
          <object class="GtkStackPage">
            <property name="name">empty</property>
            <property name="child">
              <object class="AdwStatusPage">
                <property name="icon-name">camera-disabled-symbolic</property>
                <property name="title" translatable="yes">Camera is Turned Off</property>
                <property name="description" translatable="yes">No applications can capture photos or video.</property>
              </object>
            </property>
          </object>
        </child>

        <!-- Cameras -->
        <child>
          <object class="GtkStackPage">
            <property name="name">content</property>
            <property name="child">
              <object class="AdwPreferencesPage">
                <child>
                  <object class="AdwPreferencesGroup">
                    <property name="description" translatable="yes">Use of the camera allows applications to capture photos and video. Disabling the camera may cause some applications to not function properly.

Allow the applications below to use your camera. Applications without sandboxing can always use the camera, and do not appear here.</property>
                    <child>
                      <object class="GtkListBox" id="camera_apps_list_box">
                        <property name="selection-mode">none</property>
                        <style>
                          <class name="boxed-list"/>
                        </style>

                        <child type="placeholder">
                          <object class="GtkLabel">
                            <property name="margin-start">18</property>
                            <property name="margin-end">18</property>
                            <property name="margin-top">18</property>
                            <property name="margin-bottom">18</property>
                            <property name="label" translatable="yes">No Applications Have Asked for Camera Access</property>
                            <property name="wrap">true</property>
                            <property name="max-width-chars">50</property>
                            <style>
                              <class name="dim-label" />
                            </style>
                          </object>
                        </child>
                      </object>
                    </child>
                  </object>
                </child>
              </object>
            </property>
          </object>
        </child>

      </object>
    </child>
  </template>
</interface>