mrp_view.xml

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


    <record id="bom_costs_mrp_bom_tree" model="ir.ui.view">
        <field name="name">bom.costs.mrp.bom.tree</field>
        <field name="model">mrp.bom</field>
        <field name="inherit_id" ref="mrp.mrp_bom_tree_view"></field>
	<field name="arch" type="xml">
		<xpath expr="//field[@name='product_qty']" position="after">
			<field name="total_cost" optional="hide" />
			<field name="indirect_cost" optional="hide" />
			<field name="direct_cost" optional="hide" />
		</xpath>
        </field>
    </record>


	<record model="ir.ui.view" id="mrp_bom_cost_form">
		<field name="name">mrp.bom.cost.form</field>
		<field name="model">mrp.bom.cost</field>
		<field name="arch" type="xml">
			<form string="Costos">
				<header>
					<field name="only_components" invisible="1" />
					<button name="btn_fill_components"
						type="object"
						string="Buscar componentes" />
					<button name="btn_update_costs"
						type="object"
						string="Actualizar costos" />
					<button name="btn_show_components"
						type="object"
						attrs="{'invisible': [('only_components','=',True)]}"
						string="Mostrar Sub-assemblies" />
					<button name="btn_show_all_items"
						type="object"
						attrs="{'invisible': [('only_components','=',False)]}"
						string="Mostrar Todo" />
					<button name="btn_show_first_level"
						type="object"
						string="Mostrar 1er Nivel" />
					<button name="btn_analyze_impact"
						type="object"
						string="Analizar" />
				</header>
				<sheet>
					<group>
						<field name="name" />
						<field name="bom_id" />
						<field name="product_tmpl_id" />
						<field name="product_id" />
						<field name="date" />
						<field name="qty" readonly="1"/>
						<field name="total_cost" readonly="1"/>
					</group>
					<notebook>
						<page string="Componentes">
							<br />
							<field name="line_ids" >
								<tree editable="bottom" create="0" delete="0">
									<field name="line_item" optional="hide" />
									<field name="product_id" readonly="1"/>
									<field name="bom_id" optional="hide"/>
									<field name="uom_id" readonly="1" optional="hide"/>
									<field name="tag_ids" widget="many2many_tags" />
									<field name="line_type" readonly="1"/>
									<field name="price_unit" readonly="0"/>
									<field name="direct_cost" optional="hide" readonly="0"/>
									<field name="indirect_cost" optional="hide" readonly="0"/>
									<field name="total_cost" readonly="1" invisible="1"/>
									<!-- field name="total_direct_cost" optional="hide" readonly="0"/>
									<field name="total_indirect_cost" optional="hide" readonly="0"/ -->
									<field name="qty" readonly="1"/>
									<field name="update_date" optional="hide" readonly="0"/>
									<button name="show_document" 
										string="Mostrar"
										optional="hide"
										type="object" />
								</tree>
							</field>
						</page>
						<page string="Costos">
							<br />
							<group>
								<field name="total_cost" />
								<field name="total_direct_cost" />
								<field name="total_indirect_cost" />
							</group>
						</page>
						<page string="Impacto">
							<br />
							<group>
								<field name="impact_ids" readonly="1">
									<tree>
										<field name="bom_id" />
										<field name="product_id" />
									</tree>
								</field>
							</group>
						</page>
					</notebook>
				</sheet>
			        <div class="oe_chatter">
			            <field name="message_follower_ids" widget="mail_followers" groups="base.group_user"/>
			            <field name="message_ids" widget="mail_thread"/>
			        </div>
			</form>
		</field>
	</record>


	<record model="ir.ui.view" id="mrp_bom_cost_tree">
		<field name="name">mrp.bom.cost.tree</field>
		<field name="model">mrp.bom.cost</field>
		<field name="arch" type="xml">
			<tree string="Costos">
				<field name="name" />
				<field name="bom_id" />
				<field name="product_tmpl_id" />
				<field name="product_id" optional="hide"/>
				<field name="date" />
				<field name="qty" />
				<field name="total_cost" />
			</tree>
		</field>
	</record>

	<record model="ir.actions.act_window" id="action_mrp_bom_cost">
		<field name="name">Costos de Productos</field>
		<field name="res_model">mrp.bom.cost</field>
		<field name="view_mode">tree,form</field>
		<field name="domain">[('temporary','=',False)]</field>
	</record>


	<menuitem name="Costos" id="menu_mrp_bom_costs"
		parent="mrp.menu_mrp_bom"
		action="action_mrp_bom_cost"
		sequence="100"/>

</odoo>