server-tools/database_cleanup/views/purge_wizard.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>
        <record id="form_purge_wizard" model="ir.ui.view">
            <field name="model">cleanup.purge.wizard</field>
            <field name="arch" type="xml">
                <form>
                    <header>
                        <button type="object" name="purge_all" string="Purge all" class="oe_highlight" />
                        <button type="object" name="select_lines" string="Select lines" />
                    </header>
                    <field name="purge_line_ids" attrs="{'invisible': [('purge_line_ids', '=', [])]}">
                        <form>
                            <group>
                                <field name="name" />
                                <field name="purged" />
                            </group>
                            <footer>
                                <button type="object" name="purge" class="oe_highlight"
                                        string="Purge"
                                        attrs="{'invisible': [('purged', '=', True)]}"/>
                            </footer>
                        </form>
                    </field>
                    <div attrs="{'invisible': [('purge_line_ids', '!=', [])]}">
                        Nothing found to clean up.
                    </div>
                </form>
            </field>
        </record>
        <record id="tree_purge_line" model="ir.ui.view">
            <field name="model">cleanup.purge.line</field>
            <field name="arch" type="xml">
                <tree string="Purge models" delete="false" create="false">
                    <field name="name" />
                    <field name="purged" />
                    <button type="object" name="purge"
                        icon="gtk-cancel" string="Purge this model"
                        attrs="{'invisible': [('purged', '=', True)]}"/>
                </tree>
            </field>
        </record>
    </data>
</openerp>