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import logging
from gettext import gettext as _
class FileType:
def __init__(self, formats):
self._formats = formats
def get_name(self):
raise NotImplementedError
def get_icon(self):
raise NotImplementedError
def get_preview(self):
raise NotImplementedError
def matches_mime_type(cls, mime_type):
raise NotImplementedError
matches_mime_type = classmethod(matches_mime_type)
class TextFileType(FileType):
_types = set(['text/plain', 'UTF8_STRING', 'STRING'])
def get_name(self):
return _('Text snippet')
def get_icon(self):
return 'activity-xbook'
def get_preview(self):
for format, data in self._formats.iteritems():
if format in TextFileType._types:
text = str(data.get_data())
if len(text) < 50:
return text
else:
return text[0:49] + "..."
return ''
def matches_mime_type(cls, mime_type):
return mime_type in cls._types
matches_mime_type = classmethod(matches_mime_type)
class ImageFileType(FileType):
_types = set(['image/jpeg', 'image/gif', 'image/png', 'image/tiff'])
def get_name(self):
return _('Image')
def get_icon(self):
return 'activity-sketch'
def get_preview(self):
return ''
def matches_mime_type(cls, mime_type):
return mime_type in cls._types
matches_mime_type = classmethod(matches_mime_type)
class UriFileType(FileType):
_types = set(['_NETSCAPE_URL'])
def get_name(self):
return _('Web Page')
def get_icon(self):
return 'activity-web'
def get_preview(self):
for format, data in self._formats.iteritems():
if format in UriFileType._types:
string = data.get_data()
title = string.split("\n")[1]
return title
return ''
def matches_mime_type(cls, mime_type):
return mime_type in cls._types
matches_mime_type = classmethod(matches_mime_type)
class PdfFileType(FileType):
_types = set(['application/pdf'])
def get_name(self):
return _('PDF file')
def get_icon(self):
return 'activity-xbook'
def get_preview(self):
return ''
def matches_mime_type(cls, mime_type):
return mime_type in cls._types
matches_mime_type = classmethod(matches_mime_type)
class MsWordFileType(FileType):
_types = set(['application/msword'])
def get_name(self):
return _('MS Word file')
def get_icon(self):
return 'activity-abiword'
def get_preview(self):
return ''
def matches_mime_type(cls, mime_type):
return mime_type in cls._types
matches_mime_type = classmethod(matches_mime_type)
class RtfFileType(FileType):
_types = set(['application/rtf', 'text/rtf'])
def get_name(self):
return _('RTF file')
def get_icon(self):
return 'activity-abiword'
def get_preview(self):
return ''
def matches_mime_type(cls, mime_type):
return mime_type in cls._types
matches_mime_type = classmethod(matches_mime_type)
class UnknownFileType(FileType):
def get_name(self):
return _('Object')
def get_icon(self):
return 'stock-missing'
def get_preview(self):
return ''
def matches_mime_type(cls, mime_type):
return true
matches_mime_type = classmethod(matches_mime_type)
class TypeRegistry:
def __init__(self):
self._types = []
self._types.append(PdfFileType)
self._types.append(MsWordFileType)
self._types.append(RtfFileType)
self._types.append(UriFileType)
self._types.append(ImageFileType)
self._types.append(TextFileType)
def get_type(self, formats):
for file_type in self._types:
for format, data in formats.iteritems():
if file_type.matches_mime_type(format):
return file_type(formats)
return UnknownFileType(formats)
_type_registry = None
def get_instance():
global _type_registry
if not _type_registry:
_type_registry = TypeRegistry()
return _type_registry
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