tree on_write editable 0 1 creatable 0 1 sequence keyword_open 0 1 tree_state 0 1 visual field name readonly 0 1 widget binary boolean callto char date datetime email float image integer many2many many2one multiselection numeric one2many one2one progressbar reference selection sip text time timedelta url tree_invisible optional 0 1 expand visual icon sum 0 1 width height create 0 1 delete 0 1 orientation left_to_right right_to_left bottom_to_top top_to_bottom pre_validate 0 1 completion 0 1 string factor filename help_field view_ids symbol grouping 0 1 prefix suffix string name id icon icon_type icon url url_size border square circle rounded button help string confirm name states keyword relate print action change type class instance tree_invisible width data xpath expr position inside replace replace_attributes after before