hr_analytic_timesheet_view.xml

<openerp>
    <data>
        <!-- Add task on hr.analytic.timesheet -->
        <record id="hr_timesheet_line_form" model="ir.ui.view">
            <field name="name">hr.analytic.timesheet.form</field>
            <field name="model">hr.analytic.timesheet</field>
            <field name="inherit_id" ref="hr_timesheet.hr_timesheet_line_form"/>
            <field name="arch" type="xml">
                <field name="user_id" position="after">
                    <field name="task_id"
                            context="{'account_id': account_id}"
                            domain="[('project_id.analytic_account_id','=',account_id)]"/>
                </field>
            </field>
        </record>
        <record id="hr_timesheet_line_tree" model="ir.ui.view">
            <field name="name">hr.analytic.timesheet.tree</field>
            <field name="model">hr.analytic.timesheet</field>
            <field name="inherit_id" ref="hr_timesheet.hr_timesheet_line_tree"/>
            <field name="arch" type="xml">
                <field name="account_id" position="after">
                    <field name="task_id"
                            context="{'account_id': account_id}"
                            domain="[('project_id.analytic_account_id','=',account_id)]"/>
                </field>
            </field>
        </record>
        <!-- Add task on search hr.analytic.timesheet -->
        <record id="hr_timesheet_line_search" model="ir.ui.view">
            <field name="name">hr.analytic.timesheet.search</field>
            <field name="model">hr.analytic.timesheet</field>
            <field name="inherit_id" ref="hr_timesheet.hr_timesheet_line_search"/>
            <field name="arch" type="xml">
                <field name="date" position="after">
                    <field name="task_id"/>
                </field>
                <xpath
                    expr="/search/group[@string='Group By']/filter[@string='Analytic account']"
                    position="after">
                    <filter string="Task" icon="terp-folder-green" context="{'group_by':'task_id'}"
                    />
                </xpath>
                <!-- Add dates filter -->
                <xpath expr="/search/group" position="before">
                    <separator orientation="vertical"/>
                    <filter icon="terp-go-year" string="Current Year"
                        domain="[('date','&lt;=', time.strftime('%%Y-%%m-%%d')),('date','&gt;=',time.strftime('%%Y-01-01'))]"
                        help="Current Year"/>
                    <filter icon="terp-go-month" string="Current Month" name="month"
                        domain="[('date','&lt;=',(context_today()+relativedelta(day=31)).strftime('%%Y-%%m-%%d')),('date','&gt;=',(context_today()-relativedelta(day=1)).strftime('%%Y-%%m-%%d'))]"
                        help="Current Month"/>
                    <filter icon="terp-go-week" string="Current Week" separator="1" name="week"
                        domain="[('date','&gt;=',(context_today()+relativedelta(days=-6,weekday=0)).strftime('%%Y-%%m-%%d')),('date','&lt;=',(context_today()+relativedelta(weekday=6)).strftime('%%Y-%%m-%%d'))]"
                        help="Current Week"/>
                </xpath>

            </field>
        </record>
        <!-- Add default filter on week ! -->
        <record id="hr_timesheet.act_hr_timesheet_line_evry1_all_form" model="ir.actions.act_window">
            <field name="context">{"search_default_user_id":uid, "search_default_week":1}</field>
        </record>
    </data>
</openerp>