dino/main/data/conversation_titlebar.ui

<?xml version="1.0" encoding="UTF-8"?>
<interface>
    <template class="DinoUiConversationTitlebar" parent="GtkHeaderBar">
        <property name="title"></property>
        <property name="hexpand">True</property>
        <property name="show_close_button">True</property>
        <property name="visible">True</property>
        <child>
            <object class="GtkMenuButton" id="menu_button">
                <property name="visible">True</property>
                <style>
                    <class name="image-button"/>
                </style>
                <child>
                    <object class="GtkImage">
                        <property name="visible">True</property>
                        <property name="icon-name">open-menu-symbolic</property>
                        <property name="icon-size">1</property>
                    </object>
                </child>
            </object>
            <packing>
                <property name="pack_type">end</property>
            </packing>
        </child>
        <child>
            <object class="GtkMenuButton"  id="encryption_button">
                <property name="visible">False</property>
                <style>
                    <class name="image-button"/>
                </style>
                <child>
                    <object class="GtkImage">
                        <property name="visible">True</property>
                        <property name="icon-size">1</property>
                    </object>
                </child>
            </object>
            <packing>
                <property name="pack_type">end</property>
            </packing>
        </child>
        <child>
            <object class="GtkMenuButton"  id="groupchat_button">
                <property name="visible">False</property>
                <style>
                    <class name="image-button"/>
                </style>
                <child>
                    <object class="GtkImage">
                        <property name="visible">True</property>
                        <property name="icon-name">system-users-symbolic</property>
                        <property name="icon-size">1</property>
                    </object>
                </child>
            </object>
            <packing>
                <property name="pack_type">end</property>
            </packing>
        </child>
    </template>
</interface>