| 1 |  |  | # -*- coding: utf-8 -*- | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | from bika.lims.api.security import check_permission | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  | from collective.z3cform.datagridfield import DictRow | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  | from Products.CMFCore.permissions import ModifyPortalContent | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  | from Products.CMFCore.permissions import View | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  | from senaite.core.schema.interfaces import IBaseField | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  | from senaite.core.schema.interfaces import IDataGridField | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  | from senaite.core.schema.interfaces import IDataGridRow | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  | from senaite.core.schema.interfaces import IIntField | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  | from zope.interface import implementer | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  | from zope.schema import Field | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  | from zope.schema import Int | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  | from zope.schema import List | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  | from zope.schema._bootstrapfields import _NotGiven | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  | @implementer(IBaseField) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  | class BaseField(Field): | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  |     """Extensible base field | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |     """ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |     def __init__(self, title=u"", description=u"", __name__="", | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |                  required=True, readonly=False, constraint=None, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |                  default=None, defaultFactory=None, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |                  missing_value=_NotGiven, **kw): | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |         # Call superclass with known keywords | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |         super(BaseField, self).__init__(title=title, description=description, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |                                         __name__=__name__, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  |                                         required=required, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |                                         readonly=readonly, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |                                         constraint=constraint, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |                                         default=default, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |                                         defaultFactory=defaultFactory, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |                                         missing_value=missing_value) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  |         # field security | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |         self.read_permission = kw.get("read_permission", View) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |         self.write_permission = kw.get("write_permission", ModifyPortalContent) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |     def get(self, object): | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |         """Custom field getter | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |         """ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |         return super(BaseField, self).get(object) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |     def query(self, object, default=None): | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |         """Custom field query | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |         """ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  |         return super(BaseField, self).query(object, default=default) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  |     def set(self, object, value): | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  |         """Custom field setter | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  |         This place would theoretically allow to set custom "change" events or | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |         check permissions to write the field. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  |         """ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  |         super(BaseField, self).set(object, value) | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 59 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 60 |  |  |     def can_access(self): | 
            
                                                                        
                            
            
                                    
            
            
                | 61 |  |  |         """Checks if the field can be read | 
            
                                                                        
                            
            
                                    
            
            
                | 62 |  |  |         """ | 
            
                                                                        
                            
            
                                    
            
            
                | 63 |  |  |         return check_permission(self.read_permission, self.context) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  |     def can_write(self): | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  |         """Checks the write permission | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  |         """ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  |         return check_permission(self.write_permission, self.context) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  | @implementer(IIntField) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  | class IntField(Int, BaseField): | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |     """A field that handles Integer values | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  |     """ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  |     def _validate(self, value): | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  |         super(IntField, self)._validate(value) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  | @implementer(IDataGridField) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  | class DataGridField(List, BaseField): | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  |     """A field that stores a list of dictionaries | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  |     """ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  |     def set(self, object, value): | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  |         super(DataGridField, self).set(object, value) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  | @implementer(IDataGridRow) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  | class DataGridRow(DictRow, BaseField): | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  |     """A field that stores a data grid row | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 90 |  |  |     """ | 
            
                                                        
            
                                    
            
            
                | 91 |  |  |  |