Web addon

This module implements condition for actions in tree view.
do allows: edit=“false” create=“false” delete=“false”
This module allows too: delete=“state==‘draft’”, simple expression.

web_action_conditionable/__init__.py

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+# -*- coding: utf-8 -*-
+

web_action_conditionable/__openerp__.py

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+# -*- coding: utf-8 -*-
+
+{
+    "name": 'web_action_conditionable',
+    "version": "0.1",
+    "depends": [
+        'base',
+        'web',
+    ],
+    'data': ['views/view.xml'],
+    "author": "Cristian Salamea,Odoo Community Association (OCA)",
+    "installable": True,
+    "active": False,
+}

web_action_conditionable/static/src/js/views.js

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+/*global openerp, _, $ */
+
+openerp.web_action_conditionable = function (instance) {
+  instance.web.View.include({
+    is_action_enabled: function(action) {
+      var attrs = this.fields_view.arch.attrs;
+      if (action in attrs) {
+	if ($.type(attrs[action]) == 'boolean') {
+	  return JSON.parse(attrs[action])
+	} else {
+	  var expr = attrs[action];
+	  var expression = py.parse(py.tokenize(expr));
+	  var cxt = this.dataset.get_context().__eval_context.__contexts[1];
+	  var result = py.evaluate(expression, cxt).toJSON();
+	  return result
+	}
+      } else {
+	return true;
+      }
+    }    
+  });
+}

web_action_conditionable/views/view.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<openerp>
+    <data>
+        <template id="assets_backend" name="action conditionable assets" inherit_id="web.assets_backend">
+            <xpath expr="." position="inside">
+                <script type="text/javascript" src="/web_action_conditionable/static/src/js/views.js"></script>
+            </xpath>
+        </template>
+    </data>
+</openerp>