eiru_account_bank_statement_pos/views/statement_pos.xml

<?xml version="1.0" encoding="UTF-8"?>
<openerp>
	<data>
		<!-- form -->
        <record id="eiru_account_bank_statement_pos" model="ir.ui.view">
            <field name="name">eiru.account.bank.statement.pos</field>
            <field name="model">pos.session</field>
            <field name="inherit_id" ref="point_of_sale.view_pos_session_form"/>
            <field name="arch" type="xml">
				<xpath expr="//button[@name='close']" position="replace">
					<div class="eiru-statement-pos" attrs="{'invisible' : [('state', '!=', 'opened')]}"></div>
				</xpath>
				<field name="state" position="before" >
					<div class="eiru-statement-pos-print" attrs="{'invisible' : [('state', '!=', 'closed')]}"></div>
				</field>
				<!-- Disable Create and edtit -->
				<form position="attributes">
					<attribute name="create">0</attribute>
					<attribute name="edit">0</attribute>
				</form>
            </field>
        </record>
		<!-- tree -->
        <record id="eiru_account_bank_statement_pos_tree" model="ir.ui.view">
            <field name="name">eiru.account.bank.statement.pos.tree</field>
            <field name="model">pos.session</field>
            <field name="inherit_id" ref="point_of_sale.view_pos_session_tree"/>
            <field name="arch" type="xml">
				<!-- Disable Create and edtit -->
				<tree position="attributes">
					<attribute name="create">0</attribute>
					<attribute name="edit">0</attribute>
				</tree>
            </field>
        </record>

	</data>
</openerp>