web/help_online/wizards/export_help_wizard_view.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <record model="ir.ui.view" id="export_help_wizard_view">
        <field name="name">export.help.wizard.view</field>
        <field name="model">export.help.wizard</field>
        <field name="type">form</field>
        <field name="arch" type="xml">
            <form string="Export Help Data">
                <group colspan="2">
                    <field name="export_filename"
                           invisible="1"/>
                </group>
                <group>
                    <p>
                    This wizard allow you to export all QWeb views
                    related to help online. The result will be an Odoo
                    data xml file.
                    </p>
                </group>
                <group>
                    <field name="data"
                           nolabel="1"
                           readonly="1"
                           filename="export_filename" />
                </group>
                <footer>
                    <span name="go-wizard" attrs="{'invisible': [('export_filename', '!=', False)]}">
                        <button name="export_help"
                            string="Export"
                            type="object"
                            icon="fa-magic"
                            class="oe_highlight" />
                        or
                    </span>
                    <button string="Close" class="oe_link" special="cancel" />
                </footer>
            </form>
        </field>
    </record>

    <record model="ir.actions.act_window" id="action_export_help_wizard">
        <field name="name">Export Help</field>
        <field name="res_model">export.help.wizard</field>
        <field name="view_id" ref="export_help_wizard_view"/>
        <field name="view_type">form</field>
        <field name="view_mode">form</field>
        <field name="target">new</field>
        <field name="type">ir.actions.act_window</field>
    </record>
</odoo>