hello,
how can i filter my One2many field base on Many2one field?

exemple, i have 2 classes like:

--------begin-----------
class btp_caution(models.Model):
    _name = "btp.caution"
    _description = "Les cautions"

    name = fields.Char(string='Libellé caution', required=True)
    nemero = fields.Char(string='Numéro caution')
    banque_id = fields.Many2one('btp.banque', 'Banque')
    projet_id = fields.Many2one('btp.projet', 'Projet')
    etat_caution = fields.Many2one('btp.etatcaution', 'etat_caution_')

class btp_etatcaution(models.Model):
    _name = "btp.etatcaution"
    _description = "voir les etats des differentes cautions filtres par banque et par projet/marche"
    _auto = 'False'

    name = fields.Char('Name')
    banque_id = fields.Many2one('btp.banque', 'Banque')
    projet_id = fields.Many2one('btp.projet', 'Projet')
    ligne_caution_etat = fields.One2many('btp.caution', 'etat_caution', 'etat_caution')
--------end-----------

and i have view related to this last one (btp.etatcaution) like:

--------begin-----------
<record id="view_btp_etatcaution_form" model="ir.ui.view">
    <field name="name">etatcaution</field>
    <field name="model">btp.etatcaution</field>
    <field name="arch" type="xml">
        <form string="etatcaution" class="oe_form_configuration" create="false">
            <sheet>
                <group>
                    <field name="banque_id" class="oe_inline"/>
                    <field name="projet_id" class="oe_inline"/>
                </group>
            </sheet>
            <notebook>
                <page string="Etat caution">
                    <div class="row"><div class="col-xs-12 text-muted">
                    <field name="ligne_caution_etat" >

                        <tree editable="bottom" string="Etat caution" create="false">
                            <field name="name"/>
                            <field name="nemero"/>
                            <field name="banque_id"/>
                            <field name="projet_id"/>
                        </tree>
                </field>
                </div></div>
            </page>
        </notebook>
    </form>
    </field>
</record>
<record id="action_etatcaution" model="ir.actions.act_window">
    <field name="name">etatcaution</field>
    <field name="type">ir.actions.act_window</field>
    <field name="res_model">btp.etatcaution</field>
    <field name="view_type">form</field>
    <field name="view_mode">tree,form</field>
    <field name="res_id">1</field>
    <field name="view_id" ref="view_btp_etatcaution_form"/>
</record>
--------end-----------

how can i do to filter my notebook data in oder to return only record which banque_id and projet_id are choosed in the form view?
e.g : the value of banque_id and projet_id in all notebook lines should be the same that those we have shoosed in <sheet> .... </sheet>