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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
from sugar.datastore import datastore
from sugar.clipboard import clipboardservice
from sugar import profile
from sugar import objects
_browser = None
def init(browser):
global _browser
_browser = browser
_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 default_file:
file_path = os.path.join(tempfile.gettempdir(), default_file)
else:
f, file_path = tempfile.mkstemp(suggested_file_extension)
del f
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
return NS_OK
def onStateChange(self, web_progress, request, state_flags, status):
if state_flags == interfaces.nsIWebProgressListener.STATE_START:
self._create_journal_object()
self._create_clipboard_object()
elif state_flags == interfaces.nsIWebProgressListener.STATE_STOP:
if NS_FAILED(status): # download cancelled
return
cb_service = clipboardservice.get_instance()
# Test if the object still exists in the clipboard as it could have
# been removed.
if cb_service.get_object(self._cb_object_id):
cb_service.set_object_percent(self._cb_object_id, 100)
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.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)
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) < 10 and \
(percent - self._last_update_percent) < 10:
return
self._last_update_time = time.time()
self._last_update_percent = percent
if percent < 100:
self._dl_jobject.metadata['title'] = _('Downloading %s from\n%s. Progress %i%%.') % \
(file_name, self._source.spec, percent)
datastore.write(self._dl_jobject)
cb_service = clipboardservice.get_instance()
# Test if the object still exists in the clipboard as it could have
# been removed.
if cb_service.get_object(self._cb_object_id):
cb_service.set_object_percent(self._cb_object_id, percent)
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['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)
def _create_clipboard_object(self):
path, file_name = os.path.split(self._target_file.path)
cb_service = clipboardservice.get_instance()
self._cb_object_id = cb_service.add_object(file_name)
# TODO: avoid by now adding two formats, as they would create two
# identical files in /tmp
#cb_service.add_object_format(self._cb_object_id,
# self._mime_type,
# 'file://' + self._target_file.path.encode('utf8'),
# on_disk = True)
# Also add the 'text/uri-list' target for the same file path.
cb_service.add_object_format(self._cb_object_id,
'text/uri-list',
'file://' + self._target_file.path.encode('utf8'),
on_disk = True)
components.registrar.registerFactory('{23c51569-e9a1-4a92-adeb-3723db82ef7c}"',
'Sugar Download',
'@mozilla.org/transfer;1',
Factory(Download))
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