Web   ·   Wiki   ·   Activities   ·   Blog   ·   Lists   ·   Chat   ·   Meeting   ·   Bugs   ·   Git   ·   Translate   ·   Archive   ·   People   ·   Donate
summaryrefslogtreecommitdiffstats
path: root/webactivity.py
blob: 0e3b61b1766ec009ba19dcce31918df0764f768d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
# Copyright (C) 2006, Red Hat, Inc.
# Copyright (C) 2009 Martin Langhoff, Simon Schampijer, Daniel Drake,
#                    Tomeu Vizoso
#
# 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 gettext import gettext as _
from gettext import ngettext
import os

from gi.repository import GObject
GObject.threads_init()

from gi.repository import Gtk
from gi.repository import Gdk
from gi.repository import GdkPixbuf
from gi.repository import WebKit
from gi.repository import Soup
from gi.repository import SoupGNOME

import base64
import time
import shutil
import sqlite3
import json
from gi.repository import GConf
import locale
import cairo
import StringIO
from hashlib import sha1

from sugar3.activity import activity
from sugar3.graphics import style
import telepathy
import telepathy.client
from sugar3.presence import presenceservice
from sugar3.graphics.tray import HTray
from sugar3 import profile
from sugar3.graphics.alert import Alert
from sugar3.graphics.icon import Icon
from sugar3 import mime

from sugar3.graphics.toolbarbox import ToolbarButton

PROFILE_VERSION = 2

_profile_version = 0
_profile_path = os.path.join(activity.get_activity_root(), 'data/gecko')
_version_file = os.path.join(_profile_path, 'version')
_cookies_db_path = os.path.join(_profile_path, 'cookies.sqlite')

if os.path.exists(_version_file):
    f = open(_version_file)
    _profile_version = int(f.read())
    f.close()

if _profile_version < PROFILE_VERSION:
    if not os.path.exists(_profile_path):
        os.mkdir(_profile_path)

    shutil.copy('cert8.db', _profile_path)
    os.chmod(os.path.join(_profile_path, 'cert8.db'), 0660)

    f = open(_version_file, 'w')
    f.write(str(PROFILE_VERSION))
    f.close()


def _seed_xs_cookie(cookie_jar):
    """Create a HTTP Cookie to authenticate with the Schoolserver.

    Do nothing if the laptop is not registered with Schoolserver, or
    if the cookie already exists.

    """
    client = GConf.Client.get_default()
    backup_url = client.get_string('/desktop/sugar/backup_url')
    if backup_url == '':
        _logger.debug('seed_xs_cookie: Not registered with Schoolserver')
        return

    jabber_server = client.get_string(
        '/desktop/sugar/collaboration/jabber_server')

    soup_uri = Soup.URI()
    soup_uri.set_scheme('xmpp')
    soup_uri.set_host(jabber_server)
    soup_uri.set_path('/')
    xs_cookie = cookie_jar.get_cookies(soup_uri, for_http=False)
    if xs_cookie is not None:
        _logger.debug('seed_xs_cookie: Cookie exists already')
        return

    pubkey = profile.get_profile().pubkey
    cookie_data = {'color': profile.get_color().to_string(),
                   'pkey_hash': sha1(pubkey).hexdigest()}

    expire = int(time.time()) + 10 * 365 * 24 * 60 * 60

    xs_cookie = Soup.Cookie()
    xs_cookie.set_name('xoid')
    xs_cookie.set_value(json.dumps(cookie_data))
    xs_cookie.set_domain(jabber_server)
    xs_cookie.set_path('/')
    xs_cookie.set_max_age(expire)
    cookie_jar.add_cookie(xs_cookie)
    _logger.debug('seed_xs_cookie: Updated cookie successfully')


def _set_char_preference(name, value):
    cls = components.classes["@mozilla.org/preferences-service;1"]
    prefService = cls.getService(components.interfaces.nsIPrefService)
    branch = prefService.getBranch('')
    branch.setCharPref(name, value)


from browser import TabbedView
from browser import ZOOM_ORIGINAL
from webtoolbar import PrimaryToolbar
from edittoolbar import EditToolbar
from viewtoolbar import ViewToolbar
import downloadmanager

# TODO: make the registration clearer SL #3087

from model import Model
from sugar3.presence.tubeconn import TubeConnection
from messenger import Messenger
from linkbutton import LinkButton

SERVICE = "org.laptop.WebActivity"
IFACE = SERVICE
PATH = "/org/laptop/WebActivity"

_logger = logging.getLogger('web-activity')


class WebActivity(activity.Activity):
    def __init__(self, handle):
        activity.Activity.__init__(self, handle)

        _logger.debug('Starting the web activity')

        session = WebKit.get_default_session()
        session.set_property('accept-language-auto', True)

        # By default, cookies are not stored persistently, we have to
        # add a cookie jar so that they get saved to disk.  We use one
        # with a SQlite database:
        cookie_jar = SoupGNOME.CookieJarSqlite(filename=_cookies_db_path,
                                               read_only=False)
        session.add_feature(cookie_jar)

        _seed_xs_cookie(cookie_jar)

        # FIXME
        # downloadmanager.remove_old_parts()

        self._force_close = False
        self._tabbed_view = TabbedView()
        self._tabbed_view.connect('focus-url-entry', self._on_focus_url_entry)
        self._tabbed_view.connect('switch-page', self.__switch_page_cb)

        self._tray = HTray()
        self.set_tray(self._tray, Gtk.PositionType.BOTTOM)

        self._primary_toolbar = PrimaryToolbar(self._tabbed_view, self)
        self._edit_toolbar = EditToolbar(self)
        self._view_toolbar = ViewToolbar(self)

        self._primary_toolbar.connect('add-link', self._link_add_button_cb)

        self._primary_toolbar.connect('go-home', self._go_home_button_cb)

        self._edit_toolbar_button = ToolbarButton(
                page=self._edit_toolbar,
                icon_name='toolbar-edit')

        self._primary_toolbar.toolbar.insert(
                self._edit_toolbar_button, 1)

        view_toolbar_button = ToolbarButton(
                page=self._view_toolbar,
                icon_name='toolbar-view')
        self._primary_toolbar.toolbar.insert(
                view_toolbar_button, 2)

        self._primary_toolbar.show_all()
        self.set_toolbar_box(self._primary_toolbar)

        self.set_canvas(self._tabbed_view)
        self._tabbed_view.show()

        self.model = Model()
        self.model.connect('add_link', self._add_link_model_cb)

        self.connect('key-press-event', self._key_press_cb)

        if handle.uri:
            self._tabbed_view.current_browser.load_uri(handle.uri)
        elif not self._jobject.file_path:
            # TODO: we need this hack until we extend the activity API for
            # opening URIs and default docs.
            self._tabbed_view.load_homepage()

        self.messenger = None
        self.connect('shared', self._shared_cb)

        # Get the Presence Service
        self.pservice = presenceservice.get_instance()
        try:
            name, path = self.pservice.get_preferred_connection()
            self.tp_conn_name = name
            self.tp_conn_path = path
            self.conn = telepathy.client.Connection(name, path)
        except TypeError:
            _logger.debug('Offline')
        self.initiating = None

        if self.get_shared_activity() is not None:
            _logger.debug('shared: %s', self.get_shared())
            # We are joining the activity
            _logger.debug('Joined activity')
            self.connect('joined', self._joined_cb)
            if self.get_shared():
                # We've already joined
                self._joined_cb()
        else:
            _logger.debug('Created activity')

        # README: this is a workaround to remove old temp file
        # http://bugs.sugarlabs.org/ticket/3973
        self._cleanup_temp_files()

    def _cleanup_temp_files(self):
        """Removes temporary files generated by Download Manager that
        were cancelled by the user or failed for any reason.

        There is a bug in GLib that makes this to happen:
            https://bugzilla.gnome.org/show_bug.cgi?id=629301
        """

        try:
            uptime_proc = open('/proc/uptime', 'r').read()
            uptime = int(float(uptime_proc.split()[0]))
        except EnvironmentError:
            logging.warning('/proc/uptime could not be read')
            uptime = None

        temp_path = os.path.join(self.get_activity_root(), 'instance')
        now = int(time.time())
        cutoff = now - 24 * 60 * 60  # yesterday
        if uptime is not None:
            boot_time = now - uptime
            cutoff = max(cutoff, boot_time)

        for f in os.listdir(temp_path):
            if f.startswith('.goutputstream-'):
                fpath = os.path.join(temp_path, f)
                mtime = int(os.path.getmtime(fpath))
                if mtime < cutoff:
                    logging.warning('Removing old temporary file: %s', fpath)
                    try:
                        os.remove(fpath)
                    except EnvironmentError:
                        logging.error('Temporary file could not be '
                                      'removed: %s', fpath)

    def _on_focus_url_entry(self, gobject):
        self._primary_toolbar.entry.grab_focus()

    def _shared_cb(self, activity_):
        _logger.debug('My activity was shared')
        self.initiating = True
        self._setup()

        _logger.debug('This is my activity: making a tube...')
        self.tubes_chan[telepathy.CHANNEL_TYPE_TUBES].OfferDBusTube(SERVICE,
                                                                    {})

    def _setup(self):
        if self.get_shared_activity() is None:
            _logger.debug('Failed to share or join activity')
            return

        bus_name, conn_path, channel_paths = \
                self.get_shared_activity().get_channels()

        # Work out what our room is called and whether we have Tubes already
        room = None
        tubes_chan = None
        text_chan = None
        for channel_path in channel_paths:
            channel = telepathy.client.Channel(bus_name, channel_path)
            htype, handle = channel.GetHandle()
            if htype == telepathy.HANDLE_TYPE_ROOM:
                _logger.debug('Found our room: it has handle#%d "%s"',
                              handle,
                              self.conn.InspectHandles(htype, [handle])[0])
                room = handle
                ctype = channel.GetChannelType()
                if ctype == telepathy.CHANNEL_TYPE_TUBES:
                    _logger.debug('Found our Tubes channel at %s',
                                  channel_path)
                    tubes_chan = channel
                elif ctype == telepathy.CHANNEL_TYPE_TEXT:
                    _logger.debug('Found our Text channel at %s',
                                  channel_path)
                    text_chan = channel

        if room is None:
            _logger.debug("Presence service didn't create a room")
            return
        if text_chan is None:
            _logger.debug("Presence service didn't create a text channel")
            return

        # Make sure we have a Tubes channel - PS doesn't yet provide one
        if tubes_chan is None:
            _logger.debug("Didn't find our Tubes channel, requesting one...")
            tubes_chan = self.conn.request_channel(
                telepathy.CHANNEL_TYPE_TUBES, telepathy.HANDLE_TYPE_ROOM,
                room, True)

        self.tubes_chan = tubes_chan
        self.text_chan = text_chan

        tubes_chan[telepathy.CHANNEL_TYPE_TUBES].connect_to_signal( \
                'NewTube', self._new_tube_cb)

    def _list_tubes_reply_cb(self, tubes):
        for tube_info in tubes:
            self._new_tube_cb(*tube_info)

    def _list_tubes_error_cb(self, e):
        _logger.debug('ListTubes() failed: %s', e)

    def _joined_cb(self, activity_):
        if not self.get_shared_activity():
            return

        _logger.debug('Joined an existing shared activity')

        self.initiating = False
        self._setup()

        _logger.debug('This is not my activity: waiting for a tube...')
        self.tubes_chan[telepathy.CHANNEL_TYPE_TUBES].ListTubes(
            reply_handler=self._list_tubes_reply_cb,
            error_handler=self._list_tubes_error_cb)

    def _new_tube_cb(self, identifier, initiator, type, service, params,
                     state):
        _logger.debug('New tube: ID=%d initator=%d type=%d service=%s '
                      'params=%r state=%d', identifier, initiator, type,
                      service, params, state)

        if (type == telepathy.TUBE_TYPE_DBUS and
            service == SERVICE):
            if state == telepathy.TUBE_STATE_LOCAL_PENDING:
                self.tubes_chan[telepathy.CHANNEL_TYPE_TUBES].AcceptDBusTube(
                        identifier)

            self.tube_conn = TubeConnection(self.conn,
                self.tubes_chan[telepathy.CHANNEL_TYPE_TUBES],
                identifier, group_iface=self.text_chan[
                    telepathy.CHANNEL_INTERFACE_GROUP])

            _logger.debug('Tube created')
            self.messenger = Messenger(self.tube_conn, self.initiating,
                                       self.model)

    def _get_data_from_file_path(self, file_path):
        fd = open(file_path, 'r')
        try:
            data = fd.read()
        finally:
            fd.close()
        return data

    def read_file(self, file_path):
        if self.metadata['mime_type'] == 'text/plain':
            data = self._get_data_from_file_path(file_path)
            self.model.deserialize(data)

            for link in self.model.data['shared_links']:
                _logger.debug('read: url=%s title=%s d=%s' % (link['url'],
                                                              link['title'],
                                                              link['color']))
                self._add_link_totray(link['url'],
                                      base64.b64decode(link['thumb']),
                                      link['color'], link['title'],
                                      link['owner'], -1, link['hash'])
            logging.debug('########## reading %s', data)
            self._tabbed_view.set_history(self.model.data['history'])
            for number, tab in enumerate(self.model.data['currents']):
                tab_page = self._tabbed_view.get_nth_page(number)
                tab_page.browser.set_history_index(tab['history_index'])
                tab_page.browser.grab_focus()

            self._tabbed_view.set_current_page(self.model.data['current_tab'])
        elif self.metadata['mime_type'] == 'text/uri-list':
            data = self._get_data_from_file_path(file_path)
            uris = mime.split_uri_list(data)
            if len(uris) == 1:
                self._tabbed_view.props.current_browser.load_uri(uris[0])
            else:
                _logger.error('Open uri-list: Does not support'
                              'list of multiple uris by now.')
        else:
            file_uri = 'file://' + file_path
            self._tabbed_view.props.current_browser.load_uri(file_uri)
            self._tabbed_view.props.current_browser.grab_focus()

    def write_file(self, file_path):
        if not self.metadata['mime_type']:
            self.metadata['mime_type'] = 'text/plain'

        if self.metadata['mime_type'] == 'text/plain':

            browser = self._tabbed_view.current_browser

            if not self._jobject.metadata['title_set_by_user'] == '1':
                if browser.props.title is None:
                    self.metadata['title'] = _('Untitled')
                else:
                    self.metadata['title'] = browser.props.title

            self.model.data['history'] = self._tabbed_view.get_history()
            current_tab = self._tabbed_view.get_current_page()
            self.model.data['current_tab'] = current_tab

            self.model.data['currents'] = []
            for n in range(0, self._tabbed_view.get_n_pages()):
                tab_page = self._tabbed_view.get_nth_page(n)
                n_browser = tab_page.browser
                if n_browser != None:
                    uri = n_browser.get_uri()
                    history_index = n_browser.get_history_index()
                    info = {'title': n_browser.props.title, 'url': uri,
                            'history_index': history_index}

                    self.model.data['currents'].append(info)

            f = open(file_path, 'w')
            try:
                logging.debug('########## writing %s', self.model.serialize())
                f.write(self.model.serialize())
            finally:
                f.close()

    def _link_add_button_cb(self, button):
        self._add_link()

    def _go_home_button_cb(self, button):
        self._tabbed_view.load_homepage()

    def _key_press_cb(self, widget, event):
        key_name = Gdk.keyval_name(event.keyval)
        browser = self._tabbed_view.props.current_browser

        if event.get_state() & Gdk.ModifierType.CONTROL_MASK:

            if key_name == 'd':
                self._add_link()
            elif key_name == 'f':
                _logger.debug('keyboard: Find')
                self._edit_toolbar_button.set_expanded(True)
                self._edit_toolbar.search_entry.grab_focus()
            elif key_name == 'l':
                _logger.debug('keyboard: Focus url entry')
                self._primary_toolbar.entry.grab_focus()
            elif key_name == 'minus':
                _logger.debug('keyboard: Zoom out')
                browser.zoom_out()
            elif key_name in ['plus', 'equal']:
                _logger.debug('keyboard: Zoom in')
                browser.zoom_in()
            elif key_name == '0':
                _logger.debug('keyboard: Actual size')
                browser.set_zoom_level(ZOOM_ORIGINAL)
            elif key_name == 'Left':
                _logger.debug('keyboard: Go back')
                browser.go_back()
            elif key_name == 'Right':
                _logger.debug('keyboard: Go forward')
                browser.go_forward()
            elif key_name == 'r':
                _logger.debug('keyboard: Reload')
                browser.reload()
            elif Gdk.keyval_name(event.keyval) == "t":
                self._tabbed_view.add_tab()
            else:
                return False

            return True

        elif key_name in ('KP_Up', 'KP_Down', 'KP_Left', 'KP_Right'):
            scrolled_window = browser.get_parent()

            if key_name in ('KP_Up', 'KP_Down'):
                adjustment = scrolled_window.get_vadjustment()
            elif key_name in ('KP_Left', 'KP_Right'):
                adjustment = scrolled_window.get_hadjustment()
            value = adjustment.get_value()
            step = adjustment.get_step_increment()

            if key_name in ('KP_Up', 'KP_Left'):
                adjustment.set_value(value - step)
            elif key_name in ('KP_Down', 'KP_Right'):
                adjustment.set_value(value + step)

            return True

        elif key_name == 'Escape':
            status = browser.get_load_status()
            loading = WebKit.LoadStatus.PROVISIONAL <= status \
                < WebKit.LoadStatus.FINISHED
            if loading:
                _logger.debug('keyboard: Stop loading')
                browser.stop_loading()

        return False

    def _add_link(self):
        ''' take screenshot and add link info to the model '''

        browser = self._tabbed_view.props.current_browser
        ui_uri = browser.get_uri()

        for link in self.model.data['shared_links']:
            if link['hash'] == sha1(ui_uri).hexdigest():
                _logger.debug('_add_link: link exist already a=%s b=%s',
                              link['hash'], sha1(ui_uri).hexdigest())
                return
        buf = self._get_screenshot()
        timestamp = time.time()
        self.model.add_link(ui_uri, browser.props.title, buf,
                            profile.get_nick_name(),
                            profile.get_color().to_string(), timestamp)

        if self.messenger is not None:
            self.messenger._add_link(ui_uri, browser.props.title,
                                     profile.get_color().to_string(),
                                     profile.get_nick_name(),
                                     base64.b64encode(buf), timestamp)

    def _add_link_model_cb(self, model, index):
        ''' receive index of new link from the model '''
        link = self.model.data['shared_links'][index]
        self._add_link_totray(link['url'], base64.b64decode(link['thumb']),
                              link['color'], link['title'],
                              link['owner'], index, link['hash'])

    def _add_link_totray(self, url, buf, color, title, owner, index, hash):
        ''' add a link to the tray '''
        item = LinkButton(buf, color, title, owner, hash)
        item.connect('clicked', self._link_clicked_cb, url)
        item.connect('remove_link', self._link_removed_cb)
        # use index to add to the tray
        self._tray.add_item(item, index)
        item.show()
        self._view_toolbar.traybutton.props.sensitive = True
        self._view_toolbar.traybutton.props.active = True

    def _link_removed_cb(self, button, hash):
        ''' remove a link from tray and delete it in the model '''
        self.model.remove_link(hash)
        self._tray.remove_item(button)
        if len(self._tray.get_children()) == 0:
            self._view_toolbar.traybutton.props.sensitive = False
            self._view_toolbar.traybutton.props.active = False

    def _link_clicked_cb(self, button, url):
        ''' an item of the link tray has been clicked '''
        self._tabbed_view.props.current_browser.load_uri(url)

    def _get_screenshot(self):
        browser = self._tabbed_view.props.current_browser
        window = browser.get_window()
        width, height = window.get_width(), window.get_height()

        thumb_width, thumb_height = style.zoom(100), style.zoom(80)

        thumb_surface = Gdk.Window.create_similar_surface(window,
            cairo.CONTENT_COLOR, thumb_width, thumb_height)

        cairo_context = cairo.Context(thumb_surface)
        thumb_scale_w = thumb_width * 1.0 / width
        thumb_scale_h = thumb_height * 1.0 / height
        cairo_context.scale(thumb_scale_w, thumb_scale_h)
        Gdk.cairo_set_source_window(cairo_context, window, 0, 0)
        cairo_context.paint()

        thumb_str = StringIO.StringIO()
        thumb_surface.write_to_png(thumb_str)
        return thumb_str.getvalue()

    def can_close(self):
        if self._force_close:
            return True
        elif downloadmanager.can_quit():
            return True
        else:
            alert = Alert()
            alert.props.title = ngettext('Download in progress',
                                         'Downloads in progress',
                                         downloadmanager.num_downloads())
            message = ngettext('Stopping now will erase your download',
                               'Stopping now will erase your downloads',
                               downloadmanager.num_downloads())
            alert.props.msg = message
            cancel_icon = Icon(icon_name='dialog-cancel')
            cancel_label = ngettext('Continue download', 'Continue downloads',
                                    downloadmanager.num_downloads())
            alert.add_button(Gtk.ResponseType.CANCEL, cancel_label,
                             cancel_icon)
            stop_icon = Icon(icon_name='dialog-ok')
            alert.add_button(Gtk.ResponseType.OK, _('Stop'), stop_icon)
            stop_icon.show()
            self.add_alert(alert)
            alert.connect('response', self.__inprogress_response_cb)
            alert.show()
            self.present()
            return False

    def __inprogress_response_cb(self, alert, response_id):
        self.remove_alert(alert)
        if response_id is Gtk.ResponseType.CANCEL:
            logging.debug('Keep on')
        elif response_id == Gtk.ResponseType.OK:
            logging.debug('Stop downloads and quit')
            self._force_close = True
            downloadmanager.remove_all_downloads()
            self.close()

    def __switch_page_cb(self, tabbed_view, page, page_num):
        browser = page._browser
        status = browser.get_load_status()

        if status in (WebKit.LoadStatus.COMMITTED,
                      WebKit.LoadStatus.FIRST_VISUALLY_NON_EMPTY_LAYOUT):
            self.get_window().set_cursor(Gdk.Cursor(Gdk.CursorType.WATCH))
        elif status in (WebKit.LoadStatus.PROVISIONAL,
                        WebKit.LoadStatus.FAILED,
                        WebKit.LoadStatus.FINISHED):
            self.get_window().set_cursor(Gdk.Cursor(Gdk.CursorType.LEFT_PTR))

    def get_document_path(self, async_cb, async_err_cb):
        browser = self._tabbed_view.props.current_browser
        browser.get_source(async_cb, async_err_cb)

    def get_canvas(self):
        return self._tabbed_view