fields_security_dikasa/security/views/sale_order.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>
      <record id="view_order_form" model="ir.ui.view">
        <field name="name">view_order_form</field>
        <field name="model">sale.order</field>
        <field name="inherit_id" ref="sale.view_order_form"/>
        <field name="arch" type="xml">
          <button name="action_quotation_send" states="draft" position="replace">
            <button name="action_quotation_send" string="Email" type="object" states="draft" class="oe_highlight" groups="base.group_user"/>
          </button>

          <button name="action_quotation_send" states="sent,progress,manual" position="replace">
            <button name="action_quotation_send" string="Email" type="object" states="sent,progress,manual" groups="base.group_user"/>
          </button>

          <button name="copy_quotation" states="cancel" position="replace">
            <button name="copy_quotation" states="cancel" string="Copiar" type="object"/>
          </button>

          <button name="cancel" states="draft,sent" position="replace">
            <button name="cancel" states="draft,sent" string="Cancelar" groups="base.group_user"/>
          </button>

          <button name="action_cancel" states="manual,progress" position="replace">
            <button name="action_cancel" states="manual,progress" string="Cancelar" type="object" groups="base.group_user"/>
          </button>

          <button name="invoice_cancel" states="invoice_except" position="replace">
            <button name="invoice_cancel" states="invoice_except" string="Cancelar" groups="base.group_user"/>
          </button>

          <button name="action_button_confirm" states="draft" position="replace">
            <button name="action_button_confirm" states="draft" string="Confirmar" type="object" groups="base.group_user"/>
          </button>

          <button name="action_button_confirm" states="sent" position="replace">
            <button name="action_button_confirm" states="sent" string="Confirmar" class="oe_highlight" type="object" groups="base.group_user"/>
          </button>
        </field>
      </record>

      <record id="view_order_form_inherit" model="ir.ui.view">
          <field name="name">view_order_form_inherit</field>
          <field name="model">sale.order</field>
          <field name="inherit_id" ref="sale_stock.view_order_form_inherit"/>
          <field name="arch" type="xml">
            <xpath expr="//button[@name='action_view_delivery']" position="attributes">
                <attribute name="string">Ver entrega</attribute>
            </xpath>

          </field>
      </record>

      <!-- MAKE READONLY -->

      <record id="readonly_sale_form" model="ir.ui.view">
          <field name="name">readonly_sale_form</field>
          <field name="model">sale.order</field>
          <field name="inherit_id" ref="sale_stock.view_order_form_inherit"/>
          <field name="arch" type="xml">
            <xpath expr="//field[@name='warehouse_id']" position="attributes">
                <attribute name="readonly">1</attribute>
            </xpath>

          </field>
      </record>

      <record id="readonly_sale_form2" model="ir.ui.view">
          <field name="name">readonly_sale_form2</field>
          <field name="model">sale.order</field>
          <field name="inherit_id" ref="sale.view_order_form"/>
          <field name="arch" type="xml">
            <xpath expr="//field[@name='pricelist_id']" position="attributes">
                <attribute name="readonly">1</attribute>
            </xpath>

          </field>
      </record>


      <!-- EDITABLE FOR MANAGER -->

      <record id="editable_sale_form" model="ir.ui.view">
          <field name="name">editable_sale_form</field>
          <field name="model">sale.order</field>
          <field name="inherit_id" ref="fields_security_dikasa.readonly_sale_form"/>
          <field name="groups_id" eval="[(6, 0, [ref('base.group_sale_manager')])]"/>
          <field name="arch" type="xml">
            <xpath expr="//field[@name='warehouse_id']" position="attributes">
                <attribute name="readonly">0</attribute>
            </xpath>
          </field>
      </record>

      <record id="editable_sale_form2" model="ir.ui.view">
          <field name="name">editable_sale_form</field>
          <field name="model">sale.order</field>
          <field name="inherit_id" ref="fields_security_dikasa.readonly_sale_form2"/>
          <field name="groups_id" eval="[(6, 0, [ref('base.group_sale_manager')])]"/>
          <field name="arch" type="xml">
            <xpath expr="//field[@name='pricelist_id']" position="attributes">
                <attribute name="readonly">0</attribute>
            </xpath>
          </field>
      </record>
    </data>
</openerp>