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# Copyright (C) 2007, One Laptop Per Child
#
# 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 os
import logging
import tempfile
from gettext import gettext as _
import time
from xpcom.nsError import *
from xpcom import components
from xpcom.components import interfaces
from xpcom.server.factory import Factory
import dbus
from sugar.datastore import datastore
from sugar import profile
from sugar import objects
from sugar.graphics.alert import Alert, ContinueAlert
from sugar.graphics import style
# #3903 - this constant can be removed and assumed to be 1 when dbus-python
# 0.82.3 is the only version used
import dbus
if dbus.version >= (0, 82, 3):
DBUS_PYTHON_TIMEOUT_UNITS_PER_SECOND = 1
else:
DBUS_PYTHON_TIMEOUT_UNITS_PER_SECOND = 1000
NS_BINDING_ABORTED = 0x804b0002 # From nsNetError.h
DS_DBUS_SERVICE = 'org.laptop.sugar.DataStore'
DS_DBUS_INTERFACE = 'org.laptop.sugar.DataStore'
DS_DBUS_PATH = '/org/laptop/sugar/DataStore'
_browser = None
_temp_path = '/tmp'
def init(browser, activity, temp_path):
global _browser
_browser = browser
global _activity
_activity = activity
global _temp_path
_temp_path = temp_path
_active_ds_writes = 0
_quit_callback = None
def can_quit():
return _active_ds_writes == 0
def set_quit_callback(callback):
_quit_callback = callback
class DownloadManager:
_com_interfaces_ = interfaces.nsIHelperAppLauncherDialog
def promptForSaveToFile(self, launcher, window_context,
default_file, suggested_file_extension):
file_class = components.classes["@mozilla.org/file/local;1"]
dest_file = file_class.createInstance(interfaces.nsILocalFile)
if not default_file:
default_file = time.time()
if suggested_file_extension:
default_file = '%s.%s' % (default_file, suggested_file_extension)
global _temp_path
if not os.path.exists(_temp_path):
os.makedirs(_temp_path)
file_path = os.path.join(_temp_path, default_file)
print file_path
dest_file.initWithPath(file_path)
return dest_file
def show(self, launcher, context, reason):
launcher.saveToDisk(None, False)
return NS_OK
components.registrar.registerFactory('{64355793-988d-40a5-ba8e-fcde78cac631}"',
'Sugar Download Manager',
'@mozilla.org/helperapplauncherdialog;1',
Factory(DownloadManager))
class Download:
_com_interfaces_ = interfaces.nsITransfer
def init(self, source, target, display_name, mime_info, start_time,
temp_file, cancelable):
self._source = source
self._mime_type = mime_info.MIMEType
self._temp_file = temp_file
self._target_file = target.queryInterface(interfaces.nsIFileURL).file
self._dl_jobject = None
self._cb_object_id = None
self._last_update_time = 0
self._last_update_percent = 0
self._cancelable = cancelable
return NS_OK
def onStateChange(self, web_progress, request, state_flags, status):
if state_flags == interfaces.nsIWebProgressListener.STATE_START:
self._create_journal_object()
alert = ContinueAlert(9, 'Continue')
alert.props.title = _('Download started')
path, file_name = os.path.split(self._target_file.path)
alert.props.msg = _('%s'%(file_name))
_activity.add_alert(alert)
alert.connect('response', self.__start_response_cb)
alert.show()
elif state_flags == interfaces.nsIWebProgressListener.STATE_STOP:
if NS_FAILED(status): # download cancelled
return
alert = Alert()
alert.props.title = _('Download completed')
path, file_name = os.path.split(self._target_file.path)
alert.props.msg = _('%s'%(file_name))
alert.add_button(0, _('Open'))
alert.add_button(1, _('Show'))
alert.add_button(2, _('Ok'))
_activity.add_alert(alert)
alert.connect('response', self.__stop_response_cb)
alert.show()
path, file_name = os.path.split(self._target_file.path)
self._dl_jobject.metadata['title'] = _('File %s downloaded from\n%s.') % \
(file_name, self._source.spec)
self._dl_jobject.metadata['progress'] = '100'
self._dl_jobject.file_path = self._target_file.path
if self._mime_type == 'application/octet-stream':
sniffed_mime_type = objects.mime.get_for_file(self._target_file.path)
self._dl_jobject.metadata['mime_type'] = sniffed_mime_type
global _active_ds_writes
_active_ds_writes = _active_ds_writes + 1
datastore.write(self._dl_jobject,
reply_handler=self._internal_save_cb,
error_handler=self._internal_save_error_cb,
timeout=360 * DBUS_PYTHON_TIMEOUT_UNITS_PER_SECOND)
def __start_response_cb(self, alert, response_id):
if response_id == 0:
logging.debug('Download Canceled')
self._cancelable.cancel(NS_ERROR_FAILURE)
if self._dl_jobject is not None:
self._datastore_deleted_handler.remove()
datastore.delete(self._dl_jobject.object_id)
self._dl_jobject.destroy()
self._dl_jobject = None
_activity.remove_alert(alert)
def __stop_response_cb(self, alert, response_id):
logging.debug('Download Completed %d'%response_id)
_activity.remove_alert(alert)
def _cleanup_datastore_write(self):
global _active_ds_writes
_active_ds_writes = _active_ds_writes - 1
os.remove(self._dl_jobject.file_path)
self._dl_jobject.destroy()
self._dl_jobject = None
global _quit_callback
if _active_ds_writes == 0 and not _quit_callback is None:
_quit_callback()
def _internal_save_cb(self):
self._cleanup_datastore_write()
def _internal_save_error_cb(self, err):
logging.debug("Error saving activity object to datastore: %s" % err)
self._cleanup_datastore_write()
def onProgressChange64(self, web_progress, request, cur_self_progress,
max_self_progress, cur_total_progress,
max_total_progress):
path, file_name = os.path.split(self._target_file.path)
percent = (cur_self_progress * 100) / max_self_progress
if (time.time() - self._last_update_time) < 5 and \
(percent - self._last_update_percent) < 5:
return
self._last_update_time = time.time()
self._last_update_percent = percent
if percent < 100:
self._dl_jobject.metadata['progress'] = str(percent)
datastore.write(self._dl_jobject)
def _create_journal_object(self):
path, file_name = os.path.split(self._target_file.path)
self._dl_jobject = datastore.create()
self._dl_jobject.metadata['title'] = _('Downloading %s from \n%s.') % \
(file_name, self._source.spec)
self._dl_jobject.metadata['progress'] = '0'
self._dl_jobject.metadata['keep'] = '0'
self._dl_jobject.metadata['buddies'] = ''
self._dl_jobject.metadata['preview'] = ''
self._dl_jobject.metadata['icon-color'] = profile.get_color().to_string()
self._dl_jobject.metadata['mime_type'] = self._mime_type
self._dl_jobject.file_path = ''
datastore.write(self._dl_jobject)
bus = dbus.SessionBus()
obj = bus.get_object(DS_DBUS_SERVICE, DS_DBUS_PATH)
datastore_dbus = dbus.Interface(obj, DS_DBUS_INTERFACE)
self._datastore_deleted_handler = datastore_dbus.connect_to_signal(
'Deleted', self.__datastore_deleted_cb,
arg0=self._dl_jobject.object_id)
def __datastore_deleted_cb(self, uid):
logging.debug('Downloaded entry has been deleted from the datastore: %r' % uid)
# TODO: Use NS_BINDING_ABORTED instead of NS_ERROR_FAILURE.
self._cancelable.cancel(NS_ERROR_FAILURE) #NS_BINDING_ABORTED)
components.registrar.registerFactory('{23c51569-e9a1-4a92-adeb-3723db82ef7c}"',
'Sugar Download',
'@mozilla.org/transfer;1',
Factory(Download))
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