Hello, I have found that we the main method is fields_view_get() in BaseModel (orm.py), where at the end, it writeout as following,

    result['toolbar'] = {
        'print': resprint,
        'action': resaction,
        'relate': resrelate
    }
return result

The reports listing will be in 'print' dict. What I need is to 1) Add restricted Views in Report window and 2) During fieds_view_get() call of each page (i.e., Customer Invoice with model account.invoice) remove Report from the stack if not matched the criteria from (1).

At first I wanted to inherit directly from the BaseModel, but it seem to be beyond my knowledge of python at the moment. Instead I inherit from only account.invoice and account.voucher, as the problem seem to lie on these 2 model anyway.

So, here is what I did,

1) Add restricted view in ir.actions.report.xml

class report_xml(osv.osv):
    _inherit = 'ir.actions.report.xml'
    _columns = {
        'views_id': fields.many2many('ir.ui.view', 'res_views_report_rel', 'uid', 'view_id', 'Views', domain="[('model','=',model),('inherit_id','=',False),('type','in',('tree','form'))]"),
    } report_xml()

2) Remove unmatched report if views criteria from (1) are specified.

# Remove report from the list, if the view security is assigned.
def check_print_list(result):
    view_id = result.get('view_id', False)
    if result.get('toolbar', False):
        reports = result['toolbar']['print'][:] # Pass by value
        i = 0
        for report in reports:
            if report['views_id']:
                if view_id not in report['views_id']:
                    result['toolbar']['print'].pop(i)
                    i = i-1
            i = i+1
    return result

class account_invoice(osv.osv):
    _inherit = 'account.invoice'
    def fields_view_get(self, cr, uid, view_id=None, view_type=False, context=None, toolbar=False, submenu=False):
        result = super(account_invoice, self).fields_view_get(cr, uid, view_id=view_id, view_type=view_type, context=context, toolbar=toolbar, submenu=submenu)
        result = check_print_list(result)
        return result
account_invoice()

class account_voucher(osv.osv):
    _inherit = 'account.voucher'
    def fields_view_get(self, cr, uid, view_id=None, view_type=False, context=None, toolbar=False, submenu=False):
        result = super(account_voucher, self).fields_view_get(cr, uid, view_id=view_id, view_type=view_type, context=context, toolbar=toolbar, submenu=submenu)
        result = check_print_list(result)
        return result
account_voucher()

It seem to work for me so far. But if anyone know how to modify from the BaseModel, please share with me.