Adding wizard around inventory cancellation function.

inventory.py

@@ -36,7 +36,6 @@ class Inventory(OSV):
         self._order.insert(0, ('date', 'DESC'))
         self._rpc_allowed += [
             'set_state_done',
-            'set_state_cancel', # TODO remove it and wrap it with a wizard giving a warning.
             ]
 
     def default_state(self, cursor, user, context=None):
@@ -203,3 +202,38 @@ class CompleteInventory(Wizard):
         return {}
 
 CompleteInventory()
+
+class CancelInventoryInit(WizardOSV):
+    _name = 'stock.inventory.cancel.init'
+CancelInventoryInit()
+
+class CancelInventory(Wizard):
+    'Cancel Inventory'
+    _name = 'stock.inventory.cancel'
+    states = {
+        'init': {
+            'result': {
+                'type': 'form',
+                'object': 'stock.inventory.cancel.init',
+                'state': [
+                    ('end', 'Cancel', 'gtk-cancel'),
+                    ('cancel', 'Ok', 'gtk-ok', True),
+                ],
+            },
+        },
+        'cancel': {
+            'result': {
+                'type': 'action',
+                'action': '_action_cancel',
+                'state': 'end',
+            },
+        },
+    }
+
+    def _action_cancel(self, cursor, user, data, context=None):
+        inventory_obj = self.pool.get('stock.inventory')
+        inventory_obj.set_state_cancel(
+            cursor, user, data['ids'], context=context)
+        return {}
+
+CancelInventory()

inventory.xml

@@ -1,6 +1,24 @@
 <?xml version="1.0"?>
 <tryton>
     <data>
+
+        <record model="ir.ui.view" id="inventory_select_init_view_form">
+            <field name="model">stock.inventory.cancel.init</field>
+            <field name="type">form</field>
+            <field name="arch" type="xml">
+                <![CDATA[
+                <form string="Cancel Inventory" col="1">
+		    <separator string="Warning"/>
+                    <label string="All generated moves will be cancelled."/>
+                </form>
+                ]]>
+            </field>
+        </record>
+        <record model="ir.action.wizard" id="wizard_inventory_cancel">
+            <field name="name">Cancel Inventory</field>
+            <field name="wiz_name">stock.inventory.cancel</field>
+        </record>
+
         <record model="ir.ui.view" id="inventory_view_form">
             <field name="model">stock.inventory</field>
             <field name="type">form</field>
@@ -22,7 +40,7 @@
                                 states="{'invisible': '''state in
                                 ('done','cancel') '''}"/>
                             <button string="Cancel"
-                                name="set_state_cancel" type="object"
+                                name="%(wizard_inventory_cancel)d" type="action"
                                 states="{'invisible': '''state in
                                 ('open','cancel') '''}"/>
 			</group>