Allow PYSON in tree_invisible attribute

issue5425
review21871002

CHANGELOG

@@ -1,3 +1,5 @@
+* Allow PYSON in tree_invisible attribute
+
 Version 4.0.0 - 2016-05-02
 * Bug fixes (see mercurial logs for details)
 * Add sendmail module to send transactional email

doc/topics/views/index.rst

@@ -514,7 +514,9 @@ field
 
     * ``widget``: The widget that must be used instead of the default one.
 
-    * ``tree_invisible``: Boolean to display or not the column.
+    * ``tree_invisible``: A string of :ref:`PYSON statement <topics-pyson>`
+      that will be evaluated as boolean with the context of the view to display
+      or not the column.
 
     * ``icon``: The name of the field that contains the name of the icon to
       display in the column.

trytond/ir/ui/tree.rnc

@@ -78,7 +78,7 @@ attlist.button &= attribute states { text }?
 attlist.button &= attribute change { text }?
 attlist.button &= attribute type { "class" | "instance" }?
 attlist.button &=
-  [ a:defaultValue = "0" ] attribute tree_invisible { "0" | "1" }?
+  [ a:defaultValue = "0" ] attribute tree_invisible { text }?
 data = element data { attlist.data, xpath+ }
 attlist.data &= empty
 xpath = element xpath { attlist.xpath,

trytond/ir/ui/tree.rng

@@ -276,12 +276,7 @@
   </define>
   <define name="attlist.button" combine="interleave">
     <optional>
-      <attribute name="tree_invisible" a:defaultValue="0">
-        <choice>
-          <value>0</value>
-          <value>1</value>
-        </choice>
-      </attribute>
+      <attribute name="tree_invisible" a:defaultValue="0"/>
     </optional>
   </define>
   <define name="data">