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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 logging
from urlparse import urlparse
import hashlib
import gtk
from jarabe.frame.framewindow import FrameWindow
from jarabe.frame.clipboardtray import ClipboardTray
from jarabe.frame import clipboard
class ClipboardPanelWindow(FrameWindow):
def __init__(self, frame, orientation):
FrameWindow.__init__(self, orientation)
self._frame = frame
# Listening for new clipboard objects
# NOTE: we need to keep a reference to gtk.Clipboard in order to keep
# listening to it.
self._clipboard = gtk.Clipboard()
self._clipboard.connect('owner-change', self._owner_change_cb)
self._clipboard_tray = ClipboardTray()
self._clipboard_tray.show()
self.append(self._clipboard_tray)
# Receiving dnd drops
self.drag_dest_set(0, [], 0)
self.connect('drag_motion', self._clipboard_tray.drag_motion_cb)
self.connect('drag_leave', self._clipboard_tray.drag_leave_cb)
self.connect('drag_drop', self._clipboard_tray.drag_drop_cb)
self.connect('drag_data_received',
self._clipboard_tray.drag_data_received_cb)
def _owner_change_cb(self, x_clipboard, event):
logging.debug('owner_change_cb')
if self._clipboard_tray.owns_clipboard():
return
cb_service = clipboard.get_instance()
targets = x_clipboard.wait_for_targets()
cb_selections = []
if targets is None:
return
target_is_uri = False
for target in targets:
if target not in ('TIMESTAMP', 'TARGETS',
'MULTIPLE', 'SAVE_TARGETS'):
logging.debug('Asking for target %s.', target)
if target == 'text/uri-list':
target_is_uri = True
selection = x_clipboard.wait_for_contents(target)
if not selection:
logging.warning('no data for selection target %s.', target)
continue
cb_selections.append(selection)
if target_is_uri:
uri = selection.data
filename = uri[len('file://'):].strip()
md5 = self._md5_for_file(filename)
data_hash = hash(md5)
else:
data_hash = hash(selection.data)
if len(cb_selections) > 0:
key = cb_service.add_object(name="", data_hash=data_hash)
if key is None:
return
cb_service.set_object_percent(key, percent=0)
for selection in cb_selections:
self._add_selection(key, selection)
cb_service.set_object_percent(key, percent=100)
def _md5_for_file(self, file_name):
'''Calculate md5 for file data
Calculating block wise to prevent issues with big files in memory
'''
block_size = 8192
md5 = hashlib.md5()
f = open(file_name, 'r')
while True:
data = f.read(block_size)
if not data:
break
md5.update(data)
f.close()
return md5.digest()
def _add_selection(self, key, selection):
if not selection.data:
logging.warning('no data for selection target %s.', selection.type)
return
logging.debug('adding type ' + selection.type + '.')
cb_service = clipboard.get_instance()
if selection.type == 'text/uri-list':
uris = selection.get_uris()
if len(uris) > 1:
raise NotImplementedError('Multiple uris in text/uri-list' \
' still not supported.')
uri = uris[0]
scheme, netloc_, path_, parameters_, query_, fragment_ = \
urlparse(uri)
on_disk = (scheme == 'file')
cb_service.add_object_format(key,
selection.type,
uri,
on_disk)
else:
cb_service.add_object_format(key,
selection.type,
selection.data,
on_disk=False)
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