def _validate(self, value):
if (IFileDataNoValue.providedBy(value) or not value) and self.required:
raise RequiredMissing()
if IFileDataClear.providedBy(value) or \
IFileDataNoValue.providedBy(value):
return
super(ImageField, self)._validate(value)
if not (IImage.providedBy(value) or IFileData.providedBy(value)):
raise WrongType(value, (IImage, IFileData))
if self.mimeTypes:
if value.mimeType not in self.mimeTypes:
raise NotAllowedFileType(value.mimeType, self.mimeTypes)
if not self.scale and (self.maxWidth > 0 or self.maxHeight > 0):
if IImage.providedBy(value):
width, height = value.width, value.height
else:
width, height = getImageSize(value.data)
if self.maxWidth > 0 and width > self.maxWidth:
raise ImageDimensionExceeded(width, ('width', self.maxWidth))
if self.maxHeight > 0 and height > self.maxHeight:
raise ImageDimensionExceeded(
height, ('height', self.maxHeight))
def _validate(self, value):
if (IFileDataNoValue.providedBy(value) or not value) and self.required:
raise RequiredMissing()
if IFileDataClear.providedBy(value) or \
IFileDataNoValue.providedBy(value):
return
super(FileField, self)._validate(value)
if not (IFile.providedBy(value) or IFileData.providedBy(value)):
raise WrongType(value, (IFile, IFileData))
if self.mimeTypes:
mt1, mt2 = value.mimeType.split('/')
sec = self.mts.get(mt1)
if sec:
if '*' in sec:
return
elif mt2 in sec:
return
raise NotAllowedFileType(value.mimeType, self.mimeTypes)
def set(self, object, value, _getattr=getattr, _setattr=setattr):
if self.readonly:
raise TypeError("Can't set values on read-only fields "
"(name=%s, class=%s.%s)"
% (self.__name__,
object.__class__.__module__,
object.__class__.__name__))
if IFile.providedBy(value):
_setattr(object, self.__name__, value)
elif IFileData.providedBy(value):
data = _getattr(object, self.__name__, None)
if not IFile.providedBy(data):
data = File()
data.data = value.data
data.mimeType = value.mimeType
data.filename = value.filename
data.disablePreview = value.disablePreview
data.disablePrint = value.disablePrint
_setattr(object, self.__name__, data)
else:
data = removeSecurityProxy(data)
data.data = value.data
data.mimeType = value.mimeType
data.filename = value.filename
data.disablePreview = value.disablePreview
data.disablePrint = value.disablePrint
_setattr(object, self.__name__, data)
notify(ObjectModifiedEvent(data))
elif IFileDataClear.providedBy(value):
data = _getattr(object, self.__name__, None)
if IFile.providedBy(data):
data.clear()
else:
_setattr(object, self.__name__, File())
elif IFileDataNoValue.providedBy(value):
pass
else:
self.set(object, FileData(value), _getattr, _setattr)
def toFieldValue(self, value):
value.disablePreview = False
value.disablePrint = False
if getattr(self.widget, 'disable_preview', None) is not None:
if 'true' in self.widget.disable_preview_widget.value:
value.disablePreview = True
if getattr(self.widget, 'disable_print', None) is not None:
if 'true' in self.widget.disable_print_widget.value:
value.disablePrint = True
if IFileData.providedBy(value) or IFileDataClear.providedBy(value) or \
IFileDataNoValue.providedBy(value) or IFile:
return value
if value is None or value == '':
# When no new file is uploaded, send a signal that we do not want
# to do anything special.
return interfaces.NOT_CHANGED
return FileData(value)
def set(self, object, value, _getattr=getattr, _setattr=setattr):
if self.readonly:
raise TypeError("Can't set values on read-only fields "
"(name=%s, class=%s.%s)"
% (self.__name__,
object.__class__.__module__,
object.__class__.__name__))
if IImage.providedBy(value):
_setattr(object, self.__name__, value)
elif IFileData.providedBy(value):
data = _getattr(object, self.__name__, None)
if not IImage.providedBy(data):
data = Image()
data.data = value.data
data.mimeType = value.mimeType
data.filename = value.filename
_setattr(object, self.__name__, data)
else:
data = removeSecurityProxy(data)
data.data = value.data
data.mimeType = value.mimeType
data.filename = value.filename
_setattr(object, self.__name__, data)
if self.scale and (self.maxWidth < data.width or
self.maxHeight < data.height):
data.scale(self.maxWidth, self.maxHeight)
elif IFileDataClear.providedBy(value):
data = _getattr(object, self.__name__, None)
if IImage.providedBy(data):
data.clear()
else:
_setattr(object, self.__name__, Image())
elif IFileDataNoValue.providedBy(value):
pass
else:
self.set(object, FileData(value), _getattr, _setattr)