Hy,
I'm trying to hide some buttons when I'm not in edit mode. I set a button in the header and use the class oe_edit_only :
<button name="refresh_record" string="Refresh" type="object" class="oe_edit_only"/>
In the header it works perfectly. Then in the object I have some lines (one2many) and in each line I have a button with the same syntax. Unfortunately, the oe_edit_only class is not transmitted to the tree. The button in subtree still available whatever the state of the form. I made an inspect in HTML mode and no class is specified in the subtree button yet I have a class="oe_edit_only" in the xml view definition
I precise that when I change the HTML part directly in my brower and when I set the class class="oe_link oe_edit_only" on my button in subtree, it worked. So the problem seems to come from the fact that the class is not passed to the subtree.
I also post a bug here : https://bugs.launchpad.net/openerp-web/+bug/1311199