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# Copyright (C) 2006, Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import logging
import os
import shutil
import urlparse
import tempfile
import dbus
import dbus.service
from sugar import env
from sugar import util
from sugar import mime
from clipboardobject import ClipboardObject, Format
NAME_KEY = 'NAME'
PERCENT_KEY = 'PERCENT'
ICON_KEY = 'ICON'
PREVIEW_KEY = 'PREVIEW'
ACTIVITIES_KEY = 'ACTIVITIES'
FORMATS_KEY = 'FORMATS'
TYPE_KEY = 'TYPE'
DATA_KEY = 'DATA'
ON_DISK_KEY = 'ON_DISK'
class ClipboardService(dbus.service.Object):
_CLIPBOARD_DBUS_INTERFACE = "org.laptop.Clipboard"
_CLIPBOARD_OBJECT_PATH = "/org/laptop/Clipboard"
_CLIPBOARD_OBJECTS_PATH = _CLIPBOARD_OBJECT_PATH + "/Objects/"
def __init__(self):
self._objects = {}
self._next_id = 0
bus = dbus.SessionBus()
bus_name = dbus.service.BusName(self._CLIPBOARD_DBUS_INTERFACE, bus=bus)
dbus.service.Object.__init__(self, bus_name, self._CLIPBOARD_OBJECT_PATH)
def _get_next_object_id(self):
self._next_id += 1
return self._next_id
# dbus methods
@dbus.service.method(_CLIPBOARD_DBUS_INTERFACE,
in_signature="s", out_signature="o")
def add_object(self, name):
logging.debug('ClipboardService.add_object')
op = self._CLIPBOARD_OBJECTS_PATH + "%d" % self._get_next_object_id()
self._objects[op] = ClipboardObject(op, name)
self.object_added(dbus.ObjectPath(op), name)
logging.debug('Added object ' + op + ' with name ' + name)
return dbus.ObjectPath(op)
@dbus.service.method(_CLIPBOARD_DBUS_INTERFACE,
in_signature="ssayb", out_signature="", byte_arrays=True)
def add_object_format(self, object_path, format_type, data, on_disk):
logging.debug('ClipboardService.add_object_format')
cb_object = self._objects[str(object_path)]
if format_type == 'XdndDirectSave0':
format = Format('text/uri-list', data + '\r\n', on_disk)
format.owns_disk_data = True
cb_object.add_format(format)
elif on_disk and cb_object.get_percent() == 100:
new_uri = self._copy_file(data)
cb_object.add_format(Format(format_type, new_uri, on_disk))
logging.debug('Added format of type ' + format_type + ' with path at ' + new_uri)
else:
cb_object.add_format(Format(format_type, data, on_disk))
logging.debug('Added in-memory format of type ' + format_type + '.')
self.object_state_changed(object_path, {NAME_KEY: cb_object.get_name(),
PERCENT_KEY: cb_object.get_percent(),
ICON_KEY: cb_object.get_icon(),
PREVIEW_KEY: cb_object.get_preview(),
ACTIVITIES_KEY: cb_object.get_activities()})
@dbus.service.method(_CLIPBOARD_DBUS_INTERFACE,
in_signature="o", out_signature="")
def delete_object(self, object_path):
cb_object = self._objects.pop(str(object_path))
cb_object.destroy()
self.object_deleted(object_path)
logging.debug('Deleted object with object_id ' + object_path)
@dbus.service.method(_CLIPBOARD_DBUS_INTERFACE,
in_signature="oi", out_signature="")
def set_object_percent(self, object_path, percent):
cb_object = self._objects[str(object_path)]
if percent < 0 or percent > 100:
raise ValueError("invalid percentage")
if cb_object.get_percent() > percent:
raise ValueError("invalid percentage; less than current percent")
if cb_object.get_percent() == percent:
# ignore setting same percentage
return
cb_object.set_percent(percent)
if percent == 100:
formats = cb_object.get_formats()
for format_name, format in formats.iteritems():
if format.is_on_disk() and not format.owns_disk_data:
new_uri = self._copy_file(format.get_data())
format.set_data(new_uri)
# Add a text/plain format to objects that are text but lack it
if 'text/plain' not in formats.keys():
if 'UTF8_STRING' in formats.keys():
self.add_object_format(object_path,
'text/plain',
data=formats['UTF8_STRING'].get_data(),
on_disk=False)
elif 'text/unicode' in formats.keys():
self.add_object_format(object_path,
'text/plain',
data=formats['UTF8_STRING'].get_data(),
on_disk=False)
self.object_state_changed(object_path, {NAME_KEY: cb_object.get_name(),
PERCENT_KEY: percent,
ICON_KEY: cb_object.get_icon(),
PREVIEW_KEY: cb_object.get_preview(),
ACTIVITIES_KEY: cb_object.get_activities()})
@dbus.service.method(_CLIPBOARD_DBUS_INTERFACE,
in_signature="o", out_signature="a{sv}")
def get_object(self, object_path):
logging.debug('ClipboardService.get_object')
if not self._objects.has_key(str(object_path)):
return dbus.Dictionary({}, signature='sv')
cb_object = self._objects[str(object_path)]
formats = cb_object.get_formats()
format_types = dbus.Array([], signature='s')
for type, format in formats.iteritems():
format_types.append(type)
result_dict = {NAME_KEY: cb_object.get_name(),
PERCENT_KEY: cb_object.get_percent(),
ICON_KEY: cb_object.get_icon(),
PREVIEW_KEY: cb_object.get_preview(),
ACTIVITIES_KEY: cb_object.get_activities(),
FORMATS_KEY: format_types}
return dbus.Dictionary(result_dict)
@dbus.service.method(_CLIPBOARD_DBUS_INTERFACE,
in_signature="os", out_signature="a{sv}")
def get_object_data(self, object_path, format_type):
logging.debug('ClipboardService.get_object_data')
cb_object = self._objects[str(object_path)]
format = cb_object.get_formats()[format_type]
result_dict = {TYPE_KEY: format.get_type(),
DATA_KEY: dbus.ByteArray(format.get_data()),
ON_DISK_KEY: format.is_on_disk()}
return dbus.Dictionary(result_dict)
# dbus signals
@dbus.service.signal(_CLIPBOARD_DBUS_INTERFACE, signature="os")
def object_added(self, object_path, name):
pass
@dbus.service.signal(_CLIPBOARD_DBUS_INTERFACE, signature="o")
def object_deleted(self, object_path):
pass
@dbus.service.signal(_CLIPBOARD_DBUS_INTERFACE, signature="oa{sv}")
def object_state_changed(self, object_path, values):
pass
def _copy_file(self, original_uri):
uri = urlparse.urlparse(original_uri)
path, file_name = os.path.split(uri.path)
root, ext = os.path.splitext(file_name)
if not ext or ext == '.':
mime_type = mime.get_for_file(uri.path)
ext = '.' + mime.get_primary_extension(mime_type)
f, new_file_path = tempfile.mkstemp(ext, root)
del f
shutil.copyfile(uri.path, new_file_path)
return 'file://' + new_file_path
_instance = None
def get_instance():
global _instance
if not _instance:
_instance = ClipboardService()
return _instance
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