workflow.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>

        <record id="PE_ADMIN" model="res.groups">
            <field name="name">Power Email Administrator</field>
        </record>

        <record id="wkf_poweremail_setting" model="workflow">
            <field name="name">Poweremail Workflow</field>
            <field name="osv">poweremail.core_accounts</field>
            <field name="on_create">True</field>
        </record>
        
        <!--Activity -->
        
         <record id="act_draft" model="workflow.activity">
            <field name="wkf_id" ref="wkf_poweremail_setting"/>
            <field name="flow_start">True</field>
            <field name="name">draft</field>
	    <field name="kind">function</field>
            <field name="action">write({'state':'draft'})</field>
        </record>
       
        <record id="act_approved" model="workflow.activity">
            <field name="name">approval</field>
            <field name="wkf_id" ref="wkf_poweremail_setting"/>
            <field name="kind">function</field>
            <field name="action">do_approval()</field>
        </record>
        
        <record id="act_suspended" model="workflow.activity">
            <field name="name">suspended</field>
            <field name="wkf_id" ref="wkf_poweremail_setting"/>
            <field name="kind">function</field>
            <field name="action">write({'state':'suspended'})</field>
        </record>
        <record id="act_dummy" model="workflow.activity">
            <field name="name">dummy</field>
            <field name="wkf_id" ref="wkf_poweremail_setting"/>
            <field name="flow_stop">True</field>
        </record>
        
        <!-- Transition -->
        
        <record id="trans_awaiting_approved" model="workflow.transition">
            <field name="act_from" ref="act_draft"/>
            <field name="act_to" ref="act_approved"/>
            <field name="signal">button_approval</field>
            <field name="group_id" ref="PE_ADMIN"/>
        </record>
        
        <record id="trans_approved_suspended" model="workflow.transition">
            <field name="act_from" ref="act_approved"/>
            <field name="act_to" ref="act_suspended"/>
            <field name="signal">button_suspended</field>
            <field name="group_id" ref="PE_ADMIN"/>
        </record>
        <record id="trans_suspended_reapproved" model="workflow.transition">
            <field name="act_from" ref="act_suspended"/>
            <field name="act_to" ref="act_draft"/>
            <field name="signal">get_reapprove</field>
            <field name="group_id" ref="PE_ADMIN"/>
        </record>
        <record id="trans_suspended_dummy" model="workflow.transition">
            <field name="act_from" ref="act_suspended"/>
            <field name="act_to" ref="act_dummy"/>
            <field name="signal">get_never</field>
            <field name="group_id" ref="PE_ADMIN"/>
        </record>        
    </data>
</openerp>