Hide stock moves when line type is not line

issue4300
review10601002

account.py

@@ -2,6 +2,7 @@
 #this repository contains the full copyright notices and license terms.
 from trytond.model import ModelSQL, fields
 from trytond.pool import Pool, PoolMeta
+from trytond.pyson import Eval
 
 
 __all__ = ['InvoiceLineStockMove', 'InvoiceLine']
@@ -21,7 +22,11 @@ class InvoiceLineStockMove(ModelSQL):
 class InvoiceLine:
     __name__ = 'account.invoice.line'
     stock_moves = fields.Many2Many('account.invoice.line-stock.move',
-        'invoice_line', 'stock_move', 'Stock Moves')
+        'invoice_line', 'stock_move', 'Stock Moves',
+        states={
+            'invisible': Eval('type') != 'line',
+            },
+        depends=['type'])
 
     @property
     def moved_quantity(self):

view/invoice_line_form.xml

@@ -3,7 +3,8 @@
 this repository contains the full copyright notices and license terms. -->
 <data>
     <xpath expr="/form/notebook/page[@id='general']" position="after">
-        <page string="Stock" id="stock">
+        <page string="Stock" id="stock"
+            states="{'invisible': Eval('type') != 'line'}">
             <field name="stock_moves" colspan="4"/>
         </page>
     </xpath>