523f6dd560bbbc2cd29a940dca44b6b7ed6a8fe8
[electrum-nvc.git] / gui / gtk.py
1 #!/usr/bin/env python
2 #
3 # Electrum - lightweight Bitcoin client
4 # Copyright (C) 2011 thomasv@gitorious
5 #
6 # This program is free software: you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation, either version 3 of the License, or
9 # (at your option) any later version.
10 #
11 # This program is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
15 #
16 # You should have received a copy of the GNU General Public License
17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
18
19
20 import datetime
21 import thread, time, ast, sys, re
22 import socket, traceback
23 import gi
24 gi.require_version('Gtk', '3.0')
25 from gi.repository import Gtk, Gdk, GObject, cairo
26 from decimal import Decimal
27 from electrum.util import print_error
28 from electrum.bitcoin import is_valid
29 from electrum import mnemonic, pyqrnative, WalletStorage, Wallet
30
31 Gdk.threads_init()
32 APP_NAME = "Electrum"
33 import platform
34 MONOSPACE_FONT = 'Lucida Console' if platform.system() == 'Windows' else 'monospace'
35
36 from electrum.util import format_satoshis, parse_URI
37 from electrum.network import DEFAULT_SERVERS
38 from electrum.bitcoin import MIN_RELAY_TX_FEE
39
40 def numbify(entry, is_int = False):
41     text = entry.get_text().strip()
42     chars = '0123456789'
43     if not is_int: chars +='.'
44     s = ''.join([i for i in text if i in chars])
45     if not is_int:
46         if '.' in s:
47             p = s.find('.')
48             s = s.replace('.','')
49             s = s[:p] + '.' + s[p:p+8]
50         try:
51             amount = int( Decimal(s) * 100000000 )
52         except Exception:
53             amount = None
54     else:
55         try:
56             amount = int( s )
57         except Exception:
58             amount = None
59     entry.set_text(s)
60     return amount
61
62
63
64
65 def show_seed_dialog(seed, parent):
66     if not seed:
67         show_message("No seed")
68         return
69
70     dialog = Gtk.MessageDialog(
71         parent = parent,
72         flags = Gtk.DialogFlags.MODAL, 
73         buttons = Gtk.ButtonsType.OK, 
74         message_format = "Your wallet generation seed is:\n\n" + '"' + seed + '"'\
75             + "\n\nPlease keep it in a safe place; if you lose it, you will not be able to restore your wallet.\n\n" )
76     dialog.set_title("Seed")
77     dialog.show()
78     dialog.run()
79     dialog.destroy()
80
81 def restore_create_dialog():
82
83     # ask if the user wants to create a new wallet, or recover from a seed. 
84     # if he wants to recover, and nothing is found, do not create wallet
85     dialog = Gtk.Dialog("electrum", parent=None, 
86                         flags=Gtk.DialogFlags.MODAL,
87                         buttons= ("create", 0, "restore",1, "cancel",2)  )
88
89     label = Gtk.Label("Wallet file not found.\nDo you want to create a new wallet,\n or to restore an existing one?"  )
90     label.show()
91     dialog.vbox.pack_start(label, True, True, 0)
92     dialog.show()
93     r = dialog.run()
94     dialog.destroy()
95
96     if r==2: return False
97     return 'restore' if r==1 else 'create'
98
99
100
101 def run_recovery_dialog():
102     message = "Please enter your wallet seed or the corresponding mnemonic list of words, and the gap limit of your wallet."
103     dialog = Gtk.MessageDialog(
104         parent = None,
105         flags = Gtk.DialogFlags.MODAL, 
106         buttons = Gtk.ButtonsType.OK_CANCEL,
107         message_format = message)
108
109     vbox = dialog.vbox
110     dialog.set_default_response(Gtk.ResponseType.OK)
111
112     # ask seed, server and gap in the same dialog
113     seed_box = Gtk.HBox()
114     seed_label = Gtk.Label(label='Seed or mnemonic:')
115     seed_label.set_size_request(150,-1)
116     seed_box.pack_start(seed_label, False, False, 10)
117     seed_label.show()
118     seed_entry = Gtk.Entry()
119     seed_entry.show()
120     seed_entry.set_size_request(450,-1)
121     seed_box.pack_start(seed_entry, False, False, 10)
122     add_help_button(seed_box, '.')
123     seed_box.show()
124     vbox.pack_start(seed_box, False, False, 5)    
125
126     dialog.show()
127     r = dialog.run()
128     seed = seed_entry.get_text()
129     dialog.destroy()
130
131     if r==Gtk.ResponseType.CANCEL:
132         return False
133
134     if Wallet.is_seed(seed):
135         return seed
136
137     show_message("no seed")
138     return False
139
140
141
142 def run_settings_dialog(self):
143
144     message = "Here are the settings of your wallet. For more explanations, click on the question mark buttons next to each input field."
145         
146     dialog = Gtk.MessageDialog(
147         parent = self.window,
148         flags = Gtk.DialogFlags.MODAL, 
149         buttons = Gtk.ButtonsType.OK_CANCEL,
150         message_format = message)
151
152     image = Gtk.Image()
153     image.set_from_stock(Gtk.STOCK_PREFERENCES, Gtk.IconSize.DIALOG)
154     image.show()
155     dialog.set_image(image)
156     dialog.set_title("Settings")
157
158     vbox = dialog.vbox
159     dialog.set_default_response(Gtk.ResponseType.OK)
160
161     fee = Gtk.HBox()
162     fee_entry = Gtk.Entry()
163     fee_label = Gtk.Label(label='Transaction fee:')
164     fee_label.set_size_request(150,10)
165     fee_label.show()
166     fee.pack_start(fee_label,False, False, 10)
167     fee_entry.set_text( str( Decimal(self.wallet.fee) /100000000 ) )
168     fee_entry.connect('changed', numbify, False)
169     fee_entry.show()
170     fee.pack_start(fee_entry,False,False, 10)
171     add_help_button(fee, 'Fee per kilobyte of transaction. Recommended value:0.0001')
172     fee.show()
173     vbox.pack_start(fee, False,False, 5)
174             
175     nz = Gtk.HBox()
176     nz_entry = Gtk.Entry()
177     nz_label = Gtk.Label(label='Display zeros:')
178     nz_label.set_size_request(150,10)
179     nz_label.show()
180     nz.pack_start(nz_label,False, False, 10)
181     nz_entry.set_text( str( self.num_zeros ))
182     nz_entry.connect('changed', numbify, True)
183     nz_entry.show()
184     nz.pack_start(nz_entry,False,False, 10)
185     add_help_button(nz, "Number of zeros displayed after the decimal point.\nFor example, if this number is 2, then '5.' is displayed as '5.00'")
186     nz.show()
187     vbox.pack_start(nz, False,False, 5)
188             
189     dialog.show()
190     r = dialog.run()
191     fee = fee_entry.get_text()
192     nz = nz_entry.get_text()
193         
194     dialog.destroy()
195     if r==Gtk.ResponseType.CANCEL:
196         return
197
198     try:
199         fee = int( 100000000 * Decimal(fee) )
200     except Exception:
201         show_message("error")
202         return
203     self.wallet.set_fee(fee)
204
205     try:
206         nz = int( nz )
207         if nz>8: nz = 8
208     except Exception:
209         show_message("error")
210         return
211
212     if self.num_zeros != nz:
213         self.num_zeros = nz
214         self.config.set_key('num_zeros',nz,True)
215         self.update_history_tab()
216
217
218
219
220 def run_network_dialog( network, parent ):
221     image = Gtk.Image()
222     image.set_from_stock(Gtk.STOCK_NETWORK, Gtk.IconSize.DIALOG)
223     if parent:
224         if network.is_connected():
225             interface = network.interface
226             status = "Connected to %s:%d\n%d blocks"%(interface.host, interface.port, network.blockchain.height())
227         else:
228             status = "Not connected"
229     else:
230         import random
231         status = "Please choose a server.\nSelect cancel if you are offline."
232
233     if network.is_connected():
234         server = interface.server
235         host, port, protocol = server.split(':')
236
237     servers = network.get_servers()
238
239     dialog = Gtk.MessageDialog( parent, Gtk.DialogFlags.MODAL | Gtk.DialogFlags.DESTROY_WITH_PARENT,
240                                     Gtk.MessageType.QUESTION, Gtk.ButtonsType.OK_CANCEL, status)
241     dialog.set_title("Server")
242     dialog.set_image(image)
243     image.show()
244     
245     vbox = dialog.vbox
246     host_box = Gtk.HBox()
247     host_label = Gtk.Label(label='Connect to:')
248     host_label.set_size_request(100,-1)
249     host_label.show()
250     host_box.pack_start(host_label, False, False, 10)
251     host_entry = Gtk.Entry()
252     host_entry.set_size_request(200,-1)
253     if network.is_connected():
254         host_entry.set_text(server)
255     else:
256         host_entry.set_text("Not Connected")
257     host_entry.show()
258     host_box.pack_start(host_entry, False, False, 10)
259     add_help_button(host_box, 'The name, port number and protocol of your Electrum server, separated by a colon. Example: "ecdsa.org:50002:s". Some servers allow you to connect through http (port 80) or https (port 443)')
260     host_box.show()
261
262     p_box = Gtk.HBox(False, 10)
263     p_box.show()
264
265     p_label = Gtk.Label(label='Protocol:')
266     p_label.set_size_request(100,-1)
267     p_label.show()
268     p_box.pack_start(p_label, False, False, 10)
269
270     combobox = Gtk.ComboBoxText()
271     combobox.show()
272     combobox.append_text("TCP")
273     combobox.append_text("SSL")
274     combobox.append_text("HTTP")
275     combobox.append_text("HTTPS")
276
277     p_box.pack_start(combobox, True, True, 0)
278
279     def current_line():
280         return unicode(host_entry.get_text()).split(':')
281
282     def set_combobox(protocol):
283         combobox.set_active('tshg'.index(protocol))
284
285     def set_protocol(protocol):
286         host = current_line()[0]
287         pp = servers[host]
288         if protocol not in pp.keys():
289             protocol = pp.keys()[0]
290             set_combobox(protocol)
291         port = pp[protocol]
292         host_entry.set_text( host + ':' + port + ':' + protocol)
293
294     combobox.connect("changed", lambda x:set_protocol('tshg'[combobox.get_active()]))
295     if network.is_connected():
296         set_combobox(protocol)
297         
298     server_list = Gtk.ListStore(str)
299     for host in servers.keys():
300         server_list.append([host])
301     
302     treeview = Gtk.TreeView(model=server_list)
303     treeview.show()
304
305     label = 'Active Servers' if network.irc_servers else 'Default Servers'
306     tvcolumn = Gtk.TreeViewColumn(label)
307     treeview.append_column(tvcolumn)
308     cell = Gtk.CellRendererText()
309     tvcolumn.pack_start(cell, False)
310     tvcolumn.add_attribute(cell, 'text', 0)
311
312     vbox.pack_start(host_box, False,False, 5)
313     vbox.pack_start(p_box, True, True, 0)
314
315     #scroll = Gtk.ScrolledWindow()
316     #scroll.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.ALWAYS)
317     #scroll.add_with_viewport(treeview)
318     #scroll.show()
319     #vbox.pack_start(scroll, True)
320     vbox.pack_start(treeview, True, True, 0)
321
322     def my_treeview_cb(treeview):
323         path, view_column = treeview.get_cursor()
324         host = server_list.get_value( server_list.get_iter(path), 0)
325
326         pp = servers[host]
327         if 't' in pp.keys():
328             protocol = 't'
329         else:
330             protocol = pp.keys()[0]
331         port = pp[protocol]
332         host_entry.set_text( host + ':' + port + ':' + protocol)
333         set_combobox(protocol)
334
335     treeview.connect('cursor-changed', my_treeview_cb)
336
337     dialog.show_all()
338     r = dialog.run()
339     server = host_entry.get_text()
340     dialog.destroy()
341
342     if r==Gtk.ResponseType.CANCEL:
343         return False
344
345     try:
346         host, port, protocol = server.split(':')
347         proxy = network.config.get('proxy')
348         auto_connect = network.config.get('auto_cycle')
349         network.set_parameters(host, port, protocol, proxy, auto_connect)
350     except Exception:
351         show_message("error:" + server)
352         return False
353
354
355
356
357
358 def show_message(message, parent=None):
359     dialog = Gtk.MessageDialog(
360         parent = parent,
361         flags = Gtk.DialogFlags.MODAL, 
362         buttons = Gtk.ButtonsType.CLOSE, 
363         message_format = message )
364     dialog.show()
365     dialog.run()
366     dialog.destroy()
367
368 def password_line(label):
369     password = Gtk.HBox()
370     password_label = Gtk.Label(label=label)
371     password_label.set_size_request(120,10)
372     password_label.show()
373     password.pack_start(password_label,False, False, 10)
374     password_entry = Gtk.Entry()
375     password_entry.set_size_request(300,-1)
376     password_entry.set_visibility(False)
377     password_entry.show()
378     password.pack_start(password_entry,False,False, 10)
379     password.show()
380     return password, password_entry
381
382 def password_dialog(parent):
383     dialog = Gtk.MessageDialog( parent, Gtk.DialogFlags.MODAL | Gtk.DialogFlags.DESTROY_WITH_PARENT,
384                                 Gtk.MessageType.QUESTION, Gtk.ButtonsType.OK_CANCEL,  "Please enter your password.")
385     dialog.get_image().set_visible(False)
386     current_pw, current_pw_entry = password_line('Password:')
387     current_pw_entry.connect("activate", lambda entry, dialog, response: dialog.response(response), dialog, Gtk.ResponseType.OK)
388     dialog.vbox.pack_start(current_pw, False, True, 0)
389     dialog.show()
390     result = dialog.run()
391     pw = current_pw_entry.get_text()
392     dialog.destroy()
393     if result != Gtk.ResponseType.CANCEL: return pw
394
395
396 def change_password_dialog(is_encrypted, parent):
397
398     if parent:
399         msg = 'Your wallet is encrypted. Use this dialog to change the password. To disable wallet encryption, enter an empty new password.' if is_encrypted else 'Your wallet keys are not encrypted'
400     else:
401         msg = "Please choose a password to encrypt your wallet keys"
402
403     dialog = Gtk.MessageDialog( parent, Gtk.DialogFlags.MODAL | Gtk.DialogFlags.DESTROY_WITH_PARENT, Gtk.MessageType.QUESTION, Gtk.ButtonsType.OK_CANCEL, msg)
404     dialog.set_title("Change password")
405     image = Gtk.Image()
406     image.set_from_stock(Gtk.STOCK_DIALOG_AUTHENTICATION, Gtk.IconSize.DIALOG)
407     image.show()
408     dialog.set_image(image)
409
410     if is_encrypted:
411         current_pw, current_pw_entry = password_line('Current password:')
412         dialog.vbox.pack_start(current_pw, False, True, 0)
413
414     password, password_entry = password_line('New password:')
415     dialog.vbox.pack_start(password, False, True, 5)
416     password2, password2_entry = password_line('Confirm password:')
417     dialog.vbox.pack_start(password2, False, True, 5)
418
419     dialog.show()
420     result = dialog.run()
421     password = current_pw_entry.get_text() if is_encrypted else None
422     new_password = password_entry.get_text()
423     new_password2 = password2_entry.get_text()
424     dialog.destroy()
425     if result == Gtk.ResponseType.CANCEL: 
426         return
427
428     if new_password != new_password2:
429         show_message("passwords do not match")
430         return change_password_dialog(is_encrypted, parent)
431
432     if not new_password:
433         new_password = None
434
435     return True, password, new_password
436
437
438
439 def add_help_button(hbox, message):
440     button = Gtk.Button('?')
441     button.connect("clicked", lambda x: show_message(message))
442     button.show()
443     hbox.pack_start(button,False, False, 0)
444
445
446 class MyWindow(Gtk.Window): __gsignals__ = dict( mykeypress = (GObject.SignalFlags.RUN_LAST | GObject.SignalFlags.ACTION, None, (str,)) )
447
448 GObject.type_register(MyWindow)
449 #FIXME: can't find docs how to create keybindings in PyGI
450 #Gtk.binding_entry_add_signall(MyWindow, Gdk.KEY_W, Gdk.ModifierType.CONTROL_MASK, 'mykeypress', ['ctrl+W'])
451 #Gtk.binding_entry_add_signall(MyWindow, Gdk.KEY_Q, Gdk.ModifierType.CONTROL_MASK, 'mykeypress', ['ctrl+Q'])
452
453
454 class ElectrumWindow:
455
456     def show_message(self, msg):
457         show_message(msg, self.window)
458
459     def __init__(self, wallet, config, network):
460         self.config = config
461         self.wallet = wallet
462         self.network = network
463         self.funds_error = False # True if not enough funds
464         self.num_zeros = int(self.config.get('num_zeros',0))
465
466         self.window = MyWindow(Gtk.WindowType.TOPLEVEL)
467         title = 'Electrum ' + self.wallet.electrum_version + '  -  ' + self.config.path
468         if not self.wallet.seed: title += ' [seedless]'
469         self.window.set_title(title)
470         self.window.connect("destroy", Gtk.main_quit)
471         self.window.set_border_width(0)
472         self.window.connect('mykeypress', Gtk.main_quit)
473         self.window.set_default_size(720, 350)
474         self.wallet_updated = False
475
476         vbox = Gtk.VBox()
477
478         self.notebook = Gtk.Notebook()
479         self.create_history_tab()
480         if self.wallet.seed:
481             self.create_send_tab()
482         self.create_recv_tab()
483         self.create_book_tab()
484         self.create_about_tab()
485         self.notebook.show()
486         vbox.pack_start(self.notebook, True, True, 2)
487         
488         self.status_bar = Gtk.Statusbar()
489         vbox.pack_start(self.status_bar, False, False, 0)
490
491         self.status_image = Gtk.Image()
492         self.status_image.set_from_stock(Gtk.STOCK_NO, Gtk.IconSize.MENU)
493         self.status_image.set_alignment(True, 0.5  )
494         self.status_image.show()
495
496         self.network_button = Gtk.Button()
497         self.network_button.connect("clicked", lambda x: run_network_dialog(self.network, self.window) )
498         self.network_button.add(self.status_image)
499         self.network_button.set_relief(Gtk.ReliefStyle.NONE)
500         self.network_button.show()
501         self.status_bar.pack_end(self.network_button, False, False, 0)
502
503         if self.wallet.seed:
504             def seedb(w, wallet):
505                 if wallet.use_encryption:
506                     password = password_dialog(self.window)
507                     if not password: return
508                 else: password = None
509                 seed = wallet.get_mnemonic(password)
510                 show_seed_dialog(seed, self.window)
511             button = Gtk.Button('S')
512             button.connect("clicked", seedb, self.wallet )
513             button.set_relief(Gtk.ReliefStyle.NONE)
514             button.show()
515             self.status_bar.pack_end(button,False, False, 0)
516
517         settings_icon = Gtk.Image()
518         settings_icon.set_from_stock(Gtk.STOCK_PREFERENCES, Gtk.IconSize.MENU)
519         settings_icon.set_alignment(0.5, 0.5)
520         settings_icon.set_size_request(16,16 )
521         settings_icon.show()
522
523         prefs_button = Gtk.Button()
524         prefs_button.connect("clicked", lambda x: run_settings_dialog(self) )
525         prefs_button.add(settings_icon)
526         prefs_button.set_tooltip_text("Settings")
527         prefs_button.set_relief(Gtk.ReliefStyle.NONE)
528         prefs_button.show()
529         self.status_bar.pack_end(prefs_button,False,False, 0)
530
531         self.pw_icon = Gtk.Image()
532         self.pw_icon.set_from_stock(Gtk.STOCK_DIALOG_AUTHENTICATION, Gtk.IconSize.MENU)
533         self.pw_icon.set_alignment(0.5, 0.5)
534         self.pw_icon.set_size_request(16,16 )
535         self.pw_icon.show()
536
537         if self.wallet.seed:
538
539             if self.wallet.use_encryption:
540                 self.pw_icon.set_tooltip_text('Wallet is encrypted')
541             else:
542                 self.pw_icon.set_tooltip_text('Wallet is unencrypted')
543
544             password_button = Gtk.Button()
545             password_button.connect("clicked", self.do_update_password, self.wallet)
546             password_button.add(self.pw_icon)
547             password_button.set_relief(Gtk.ReliefStyle.NONE)
548             password_button.show()
549             self.status_bar.pack_end(password_button,False,False, 0)
550
551         self.window.add(vbox)
552         self.window.show_all()
553         #self.fee_box.hide()
554
555         self.context_id = self.status_bar.get_context_id("statusbar")
556         self.update_status_bar()
557
558         self.network.register_callback('updated', self.update_callback)
559
560
561         def update_status_bar_thread():
562             while True:
563                 GObject.idle_add( self.update_status_bar )
564                 time.sleep(0.5)
565
566
567         def check_recipient_thread():
568             old_r = ''
569             while True:
570                 time.sleep(0.5)
571                 if self.payto_entry.is_focus():
572                     continue
573                 r = self.payto_entry.get_text()
574                 if r != old_r:
575                     old_r = r
576                     r = r.strip()
577                     if re.match('^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$', r):
578                         try:
579                             to_address = self.wallet.get_alias(r, interactive=False)
580                         except Exception:
581                             continue
582                         if to_address:
583                             s = r + ' <' + to_address + '>'
584                             GObject.idle_add( lambda: self.payto_entry.set_text(s) )
585                 
586
587         thread.start_new_thread(update_status_bar_thread, ())
588         if self.wallet.seed:
589             thread.start_new_thread(check_recipient_thread, ())
590         self.notebook.set_current_page(0)
591
592     def update_callback(self):
593         self.wallet_updated = True
594
595     def do_update_password(self, button, wallet):
596         if not wallet.seed:
597             show_message("No seed")
598             return
599
600         res = change_password_dialog(wallet.use_encryption, self.window)
601         if res:
602             _, password, new_password = res
603
604             try:
605                 wallet.get_seed(password)
606             except Exception:
607                 show_message("Incorrect password")
608                 return
609
610             wallet.update_password(password, new_password)
611
612             if wallet.use_encryption:
613                 self.pw_icon.set_tooltip_text('Wallet is encrypted')
614             else:
615                 self.pw_icon.set_tooltip_text('Wallet is unencrypted')
616
617
618     def add_tab(self, page, name):
619         tab_label = Gtk.Label(label=name)
620         tab_label.show()
621         self.notebook.append_page(page, tab_label)
622
623
624     def create_send_tab(self):
625         
626         page = vbox = Gtk.VBox()
627         page.show()
628
629         payto = Gtk.HBox()
630         payto_label = Gtk.Label(label='Pay to:')
631         payto_label.set_size_request(100,-1)
632         payto.pack_start(payto_label, False, False, 0)
633         payto_entry = Gtk.Entry()
634         payto_entry.set_size_request(450, 26)
635         payto.pack_start(payto_entry, False, False, 0)
636         vbox.pack_start(payto, False, False, 5)
637
638         message = Gtk.HBox()
639         message_label = Gtk.Label(label='Description:')
640         message_label.set_size_request(100,-1)
641         message.pack_start(message_label, False, False, 0)
642         message_entry = Gtk.Entry()
643         message_entry.set_size_request(450, 26)
644         message.pack_start(message_entry, False, False, 0)
645         vbox.pack_start(message, False, False, 5)
646
647         amount_box = Gtk.HBox()
648         amount_label = Gtk.Label(label='Amount:')
649         amount_label.set_size_request(100,-1)
650         amount_box.pack_start(amount_label, False, False, 0)
651         amount_entry = Gtk.Entry()
652         amount_entry.set_size_request(120, -1)
653         amount_box.pack_start(amount_entry, False, False, 0)
654         vbox.pack_start(amount_box, False, False, 5)
655
656         self.fee_box = fee_box = Gtk.HBox()
657         fee_label = Gtk.Label(label='Fee:')
658         fee_label.set_size_request(100,-1)
659         fee_box.pack_start(fee_label, False, False, 0)
660         fee_entry = Gtk.Entry()
661         fee_entry.set_size_request(60, 26)
662         fee_box.pack_start(fee_entry, False, False, 0)
663         vbox.pack_start(fee_box, False, False, 5)
664
665         end_box = Gtk.HBox()
666         empty_label = Gtk.Label(label='')
667         empty_label.set_size_request(100,-1)
668         end_box.pack_start(empty_label, False, False, 0)
669         send_button = Gtk.Button("Send")
670         send_button.show()
671         end_box.pack_start(send_button, False, False, 0)
672         clear_button = Gtk.Button("Clear")
673         clear_button.show()
674         end_box.pack_start(clear_button, False, False, 15)
675         send_button.connect("clicked", self.do_send, (payto_entry, message_entry, amount_entry, fee_entry))
676         clear_button.connect("clicked", self.do_clear, (payto_entry, message_entry, amount_entry, fee_entry))
677
678         vbox.pack_start(end_box, False, False, 5)
679
680         # display this line only if there is a signature
681         payto_sig = Gtk.HBox()
682         payto_sig_id = Gtk.Label(label='')
683         payto_sig.pack_start(payto_sig_id, False, False, 0)
684         vbox.pack_start(payto_sig, True, True, 5)
685         
686
687         self.user_fee = False
688
689         def entry_changed( entry, is_fee ):
690             self.funds_error = False
691             amount = numbify(amount_entry)
692             fee = numbify(fee_entry)
693             if not is_fee: fee = None
694             if amount is None:
695                 return
696             #assume two outputs - one for change
697             inputs, total, fee = self.wallet.choose_tx_inputs( amount, fee, 2 )
698             if not is_fee:
699                 fee_entry.set_text( str( Decimal( fee ) / 100000000 ) )
700                 self.fee_box.show()
701             if inputs:
702                 amount_entry.modify_text(Gtk.StateType.NORMAL, Gdk.color_parse("#000000"))
703                 fee_entry.modify_text(Gtk.StateType.NORMAL, Gdk.color_parse("#000000"))
704                 send_button.set_sensitive(True)
705             else:
706                 send_button.set_sensitive(False)
707                 amount_entry.modify_text(Gtk.StateType.NORMAL, Gdk.color_parse("#cc0000"))
708                 fee_entry.modify_text(Gtk.StateType.NORMAL, Gdk.color_parse("#cc0000"))
709                 self.funds_error = True
710
711         amount_entry.connect('changed', entry_changed, False)
712         fee_entry.connect('changed', entry_changed, True)        
713
714         self.payto_entry = payto_entry
715         self.payto_fee_entry = fee_entry
716         self.payto_sig_id = payto_sig_id
717         self.payto_sig = payto_sig
718         self.amount_entry = amount_entry
719         self.message_entry = message_entry
720         self.add_tab(page, 'Send')
721
722     def set_frozen(self,entry,frozen):
723         if frozen:
724             entry.set_editable(False)
725             entry.set_has_frame(False)
726             entry.modify_base(Gtk.StateType.NORMAL, Gdk.color_parse("#eeeeee"))
727         else:
728             entry.set_editable(True)
729             entry.set_has_frame(True)
730             entry.modify_base(Gtk.StateType.NORMAL, Gdk.color_parse("#ffffff"))
731
732     def set_url(self, url):
733         payto, amount, label, message, payment_request = parse_URI(url)
734         self.notebook.set_current_page(1)
735         self.payto_entry.set_text(payto)
736         self.message_entry.set_text(message)
737         self.amount_entry.set_text(amount)
738         self.payto_sig.set_visible(False)
739
740     def create_about_tab(self):
741         from gi.repository import Pango
742         page = Gtk.VBox()
743         page.show()
744         tv = Gtk.TextView()
745         tv.set_editable(False)
746         tv.set_cursor_visible(False)
747         tv.modify_font(Pango.FontDescription(MONOSPACE_FONT))
748         scroll = Gtk.ScrolledWindow()
749         scroll.add(tv)
750         page.pack_start(scroll, True, True, 0)
751         self.info = tv.get_buffer()
752         self.add_tab(page, 'Wall')
753
754     def do_clear(self, w, data):
755         self.payto_sig.set_visible(False)
756         self.payto_fee_entry.set_text('')
757         for entry in [self.payto_entry,self.amount_entry,self.message_entry]:
758             self.set_frozen(entry,False)
759             entry.set_text('')
760
761     def question(self,msg):
762         dialog = Gtk.MessageDialog( self.window, Gtk.DialogFlags.MODAL | Gtk.DialogFlags.DESTROY_WITH_PARENT, Gtk.MessageType.QUESTION, Gtk.ButtonsType.OK_CANCEL, msg)
763         dialog.show()
764         result = dialog.run()
765         dialog.destroy()
766         return result == Gtk.ResponseType.OK
767
768     def do_send(self, w, data):
769         payto_entry, label_entry, amount_entry, fee_entry = data
770         label = label_entry.get_text()
771         r = payto_entry.get_text()
772         r = r.strip()
773
774         m1 = re.match('^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$', r)
775         m2 = re.match('(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+) \<([1-9A-HJ-NP-Za-km-z]{26,})\>', r)
776         
777         if m1:
778             to_address = self.wallet.get_alias(r, True, self.show_message, self.question)
779             if not to_address:
780                 return
781             else:
782                 self.update_sending_tab()
783
784         elif m2:
785             to_address = m2.group(5)
786         else:
787             to_address = r
788
789         if not is_valid(to_address):
790             self.show_message( "invalid bitcoin address:\n"+to_address)
791             return
792
793         try:
794             amount = int( Decimal(amount_entry.get_text()) * 100000000 )
795         except Exception:
796             self.show_message( "invalid amount")
797             return
798         try:
799             fee = int( Decimal(fee_entry.get_text()) * 100000000 )
800         except Exception:
801             self.show_message( "invalid fee")
802             return
803
804         if self.wallet.use_encryption:
805             password = password_dialog(self.window)
806             if not password:
807                 return
808         else:
809             password = None
810
811         try:
812             tx = self.wallet.mktx( [(to_address, amount)], password, fee )
813         except Exception as e:
814             self.show_message(str(e))
815             return
816
817         if tx.requires_fee(self.wallet.verifier) and fee < MIN_RELAY_TX_FEE:
818             self.show_message( "This transaction requires a higher fee, or it will not be propagated by the network." )
819             return
820
821             
822         if label: 
823             self.wallet.labels[tx.hash()] = label
824
825         status, msg = self.wallet.sendtx( tx )
826         if status:
827             self.show_message( "payment sent.\n" + msg )
828             payto_entry.set_text("")
829             label_entry.set_text("")
830             amount_entry.set_text("")
831             fee_entry.set_text("")
832             #self.fee_box.hide()
833             self.update_sending_tab()
834         else:
835             self.show_message( msg )
836
837
838     def treeview_button_press(self, treeview, event):
839         if event.type == Gdk.EventType.DOUBLE_BUTTON_PRESS:
840             c = treeview.get_cursor()[0]
841             if treeview == self.history_treeview:
842                 tx_details = self.history_list.get_value( self.history_list.get_iter(c), 8)
843                 self.show_message(tx_details)
844             elif treeview == self.contacts_treeview:
845                 m = self.addressbook_list.get_value( self.addressbook_list.get_iter(c), 0)
846                 #a = self.wallet.aliases.get(m)
847                 #if a:
848                 #    if a[0] in self.wallet.authorities.keys():
849                 #        s = self.wallet.authorities.get(a[0])
850                 #    else:
851                 #        s = "self-signed"
852                 #    msg = 'Alias: '+ m + '\nTarget address: '+ a[1] + '\n\nSigned by: ' + s + '\nSigning address:' + a[0]
853                 #    self.show_message(msg)
854             
855
856     def treeview_key_press(self, treeview, event):
857         c = treeview.get_cursor()[0]
858         if event.keyval == Gdk.KEY_Up:
859             if c and c[0] == 0:
860                 treeview.parent.grab_focus()
861                 treeview.set_cursor((0,))
862         elif event.keyval == Gdk.KEY_Return:
863             if treeview == self.history_treeview:
864                 tx_details = self.history_list.get_value( self.history_list.get_iter(c), 8)
865                 self.show_message(tx_details)
866             elif treeview == self.contacts_treeview:
867                 m = self.addressbook_list.get_value( self.addressbook_list.get_iter(c), 0)
868                 #a = self.wallet.aliases.get(m)
869                 #if a:
870                 #    if a[0] in self.wallet.authorities.keys():
871                 #        s = self.wallet.authorities.get(a[0])
872                 #    else:
873                 #        s = "self"
874                 #    msg = 'Alias:'+ m + '\n\nTarget: '+ a[1] + '\nSigned by: ' + s + '\nSigning address:' + a[0]
875                 #    self.show_message(msg)
876
877         return False
878
879     def create_history_tab(self):
880
881         self.history_list = Gtk.ListStore(str, str, str, str, 'gboolean',  str, str, str, str)
882         treeview = Gtk.TreeView(model=self.history_list)
883         self.history_treeview = treeview
884         treeview.set_tooltip_column(7)
885         treeview.show()
886         treeview.connect('key-press-event', self.treeview_key_press)
887         treeview.connect('button-press-event', self.treeview_button_press)
888
889         tvcolumn = Gtk.TreeViewColumn('')
890         treeview.append_column(tvcolumn)
891         cell = Gtk.CellRendererPixbuf()
892         tvcolumn.pack_start(cell, False)
893         tvcolumn.set_attributes(cell, stock_id=1)
894
895         tvcolumn = Gtk.TreeViewColumn('Date')
896         treeview.append_column(tvcolumn)
897         cell = Gtk.CellRendererText()
898         tvcolumn.pack_start(cell, False)
899         tvcolumn.add_attribute(cell, 'text', 2)
900
901         tvcolumn = Gtk.TreeViewColumn('Description')
902         treeview.append_column(tvcolumn)
903         cell = Gtk.CellRendererText()
904         cell.set_property('foreground', 'grey')
905         cell.set_property('family', MONOSPACE_FONT)
906         cell.set_property('editable', True)
907         def edited_cb(cell, path, new_text, h_list):
908             tx = h_list.get_value( h_list.get_iter(path), 0)
909             self.wallet.set_label(tx,new_text)
910             self.update_history_tab()
911         cell.connect('edited', edited_cb, self.history_list)
912         def editing_started(cell, entry, path, h_list):
913             tx = h_list.get_value( h_list.get_iter(path), 0)
914             if not self.wallet.labels.get(tx): entry.set_text('')
915         cell.connect('editing-started', editing_started, self.history_list)
916         tvcolumn.set_expand(True)
917         tvcolumn.pack_start(cell, True)
918         tvcolumn.set_attributes(cell, text=3, foreground_set = 4)
919
920         tvcolumn = Gtk.TreeViewColumn('Amount')
921         treeview.append_column(tvcolumn)
922         cell = Gtk.CellRendererText()
923         cell.set_alignment(1, 0.5)
924         cell.set_property('family', MONOSPACE_FONT)
925         tvcolumn.pack_start(cell, False)
926         tvcolumn.add_attribute(cell, 'text', 5)
927
928         tvcolumn = Gtk.TreeViewColumn('Balance')
929         treeview.append_column(tvcolumn)
930         cell = Gtk.CellRendererText()
931         cell.set_alignment(1, 0.5)
932         cell.set_property('family', MONOSPACE_FONT)
933         tvcolumn.pack_start(cell, False)
934         tvcolumn.add_attribute(cell, 'text', 6)
935
936         tvcolumn = Gtk.TreeViewColumn('Tooltip')
937         treeview.append_column(tvcolumn)
938         cell = Gtk.CellRendererText()
939         tvcolumn.pack_start(cell, False)
940         tvcolumn.add_attribute(cell, 'text', 7)
941         tvcolumn.set_visible(False)
942
943         scroll = Gtk.ScrolledWindow()
944         scroll.set_policy(Gtk.PolicyType.NEVER, Gtk.PolicyType.AUTOMATIC)
945         scroll.add(treeview)
946
947         self.add_tab(scroll, 'History')
948         self.update_history_tab()
949
950
951     def create_recv_tab(self):
952         self.recv_list = Gtk.ListStore(str, str, str, str, str)
953         self.add_tab( self.make_address_list(True), 'Receive')
954         self.update_receiving_tab()
955
956     def create_book_tab(self):
957         self.addressbook_list = Gtk.ListStore(str, str, str)
958         self.add_tab( self.make_address_list(False), 'Contacts')
959         self.update_sending_tab()
960
961     def make_address_list(self, is_recv):
962         liststore = self.recv_list if is_recv else self.addressbook_list
963         treeview = Gtk.TreeView(model= liststore)
964         treeview.connect('key-press-event', self.treeview_key_press)
965         treeview.connect('button-press-event', self.treeview_button_press)
966         treeview.show()
967         if not is_recv:
968             self.contacts_treeview = treeview
969
970         tvcolumn = Gtk.TreeViewColumn('Address')
971         treeview.append_column(tvcolumn)
972         cell = Gtk.CellRendererText()
973         cell.set_property('family', MONOSPACE_FONT)
974         tvcolumn.pack_start(cell, True)
975         tvcolumn.add_attribute(cell, 'text', 0)
976
977         tvcolumn = Gtk.TreeViewColumn('Label')
978         tvcolumn.set_expand(True)
979         treeview.append_column(tvcolumn)
980         cell = Gtk.CellRendererText()
981         cell.set_property('editable', True)
982         def edited_cb2(cell, path, new_text, liststore):
983             address = liststore.get_value( liststore.get_iter(path), 0)
984             self.wallet.set_label(address, new_text)
985             self.update_receiving_tab()
986             self.update_sending_tab()
987             self.update_history_tab()
988         cell.connect('edited', edited_cb2, liststore)
989         tvcolumn.pack_start(cell, True)
990         tvcolumn.add_attribute(cell, 'text', 1)
991
992         tvcolumn = Gtk.TreeViewColumn('Tx')
993         treeview.append_column(tvcolumn)
994         cell = Gtk.CellRendererText()
995         tvcolumn.pack_start(cell, True)
996         tvcolumn.add_attribute(cell, 'text', 2)
997
998         if is_recv:
999             tvcolumn = Gtk.TreeViewColumn('Balance')
1000             treeview.append_column(tvcolumn)
1001             cell = Gtk.CellRendererText()
1002             tvcolumn.pack_start(cell, True)
1003             tvcolumn.add_attribute(cell, 'text', 3)
1004             tvcolumn = Gtk.TreeViewColumn('Type')
1005             treeview.append_column(tvcolumn)
1006             cell = Gtk.CellRendererText()
1007             tvcolumn.pack_start(cell, True)
1008             tvcolumn.add_attribute(cell, 'text', 4)
1009
1010         scroll = Gtk.ScrolledWindow()
1011         scroll.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
1012         scroll.add(treeview)
1013
1014         hbox = Gtk.HBox()
1015         if not is_recv:
1016             button = Gtk.Button("New")
1017             button.connect("clicked", self.newaddress_dialog)
1018             button.show()
1019             hbox.pack_start(button,False, False, 0)
1020
1021         def showqrcode(w, treeview, liststore):
1022             path, col = treeview.get_cursor()
1023             if not path: return
1024             address = liststore.get_value(liststore.get_iter(path), 0)
1025             qr = pyqrnative.QRCode(4, pyqrnative.QRErrorCorrectLevel.H)
1026             qr.addData(address)
1027             qr.make()
1028             boxsize = 7
1029             boxcount_row = qr.getModuleCount()
1030             size = (boxcount_row + 4) * boxsize
1031             def area_expose_cb(area, cr):
1032                 style = area.get_style()
1033                 Gdk.cairo_set_source_color(cr, style.white)
1034                 cr.rectangle(0, 0, size, size)
1035                 cr.fill()
1036                 Gdk.cairo_set_source_color(cr, style.black)
1037                 for r in range(boxcount_row):
1038                     for c in range(boxcount_row):
1039                         if qr.isDark(r, c):
1040                             cr.rectangle((c + 2) * boxsize, (r + 2) * boxsize, boxsize, boxsize)
1041                             cr.fill()
1042             area = Gtk.DrawingArea()
1043             area.set_size_request(size, size)
1044             area.connect("draw", area_expose_cb)
1045             area.show()
1046             dialog = Gtk.Dialog(address, parent=self.window, flags=Gtk.DialogFlags.MODAL, buttons = ("ok",1))
1047             dialog.vbox.add(area)
1048             dialog.run()
1049             dialog.destroy()
1050
1051         button = Gtk.Button("QR")
1052         button.connect("clicked", showqrcode, treeview, liststore)
1053         button.show()
1054         hbox.pack_start(button,False, False, 0)
1055
1056         button = Gtk.Button("Copy to clipboard")
1057         def copy2clipboard(w, treeview, liststore):
1058             import platform
1059             path, col =  treeview.get_cursor()
1060             if path:
1061                 address =  liststore.get_value( liststore.get_iter(path), 0)
1062                 if platform.system() == 'Windows':
1063                     from Tkinter import Tk
1064                     r = Tk()
1065                     r.withdraw()
1066                     r.clipboard_clear()
1067                     r.clipboard_append( address )
1068                     r.destroy()
1069                 else:
1070                     atom = Gdk.atom_intern('CLIPBOARD', True)
1071                     c = Gtk.Clipboard.get(atom)
1072                     c.set_text( address, len(address) )
1073         button.connect("clicked", copy2clipboard, treeview, liststore)
1074         button.show()
1075         hbox.pack_start(button,False, False, 0)
1076
1077         if is_recv:
1078             button = Gtk.Button("Freeze")
1079             def freeze_address(w, treeview, liststore, wallet):
1080                 path, col = treeview.get_cursor()
1081                 if path:
1082                     address = liststore.get_value( liststore.get_iter(path), 0)
1083                     if address in wallet.frozen_addresses:
1084                         wallet.unfreeze(address)
1085                     else:
1086                         wallet.freeze(address)
1087                     self.update_receiving_tab()
1088             button.connect("clicked", freeze_address, treeview, liststore, self.wallet)
1089             button.show()
1090             hbox.pack_start(button,False, False, 0)
1091
1092         if not is_recv:
1093             button = Gtk.Button("Pay to")
1094             def payto(w, treeview, liststore):
1095                 path, col =  treeview.get_cursor()
1096                 if path:
1097                     address =  liststore.get_value( liststore.get_iter(path), 0)
1098                     self.payto_entry.set_text( address )
1099                     self.notebook.set_current_page(1)
1100                     self.amount_entry.grab_focus()
1101
1102             button.connect("clicked", payto, treeview, liststore)
1103             button.show()
1104             hbox.pack_start(button,False, False, 0)
1105
1106         vbox = Gtk.VBox()
1107         vbox.pack_start(scroll,True, True, 0)
1108         vbox.pack_start(hbox, False, False, 0)
1109         return vbox
1110
1111     def update_status_bar(self):
1112         interface = self.network.interface
1113         if self.funds_error:
1114             text = "Not enough funds"
1115         elif interface and interface.is_connected:
1116             self.network_button.set_tooltip_text("Connected to %s:%d.\n%d blocks"%(interface.host, interface.port, self.network.blockchain.height()))
1117             if not self.wallet.up_to_date:
1118                 self.status_image.set_from_stock(Gtk.STOCK_REFRESH, Gtk.IconSize.MENU)
1119                 text = "Synchronizing..."
1120             else:
1121                 self.status_image.set_from_stock(Gtk.STOCK_YES, Gtk.IconSize.MENU)
1122                 self.network_button.set_tooltip_text("Connected to %s:%d.\n%d blocks"%(interface.host, interface.port, self.network.blockchain.height()))
1123                 c, u = self.wallet.get_balance()
1124                 text =  "Balance: %s "%( format_satoshis(c,False,self.num_zeros) )
1125                 if u: text +=  "[%s unconfirmed]"%( format_satoshis(u,True,self.num_zeros).strip() )
1126         else:
1127             self.status_image.set_from_stock(Gtk.STOCK_NO, Gtk.IconSize.MENU)
1128             self.network_button.set_tooltip_text("Not connected.")
1129             text = "Not connected"
1130
1131         self.status_bar.pop(self.context_id) 
1132         self.status_bar.push(self.context_id, text)
1133
1134         if self.wallet.up_to_date and self.wallet_updated:
1135             self.update_history_tab()
1136             self.update_receiving_tab()
1137             # addressbook too...
1138             self.info.set_text( self.network.banner )
1139             self.wallet_updated = False
1140
1141     def update_receiving_tab(self):
1142         self.recv_list.clear()
1143         for address in self.wallet.addresses(True):
1144             Type = "R"
1145             c = u = 0
1146             if self.wallet.is_change(address): Type = "C"
1147             if address in self.wallet.imported_keys.keys():
1148                 Type = "I"
1149             c, u = self.wallet.get_addr_balance(address)
1150             if address in self.wallet.frozen_addresses: Type = Type + "F"
1151             label = self.wallet.labels.get(address)
1152             h = self.wallet.history.get(address,[])
1153             n = len(h)
1154             tx = "0" if n==0 else "%d"%n
1155             self.recv_list.append((address, label, tx, format_satoshis(c,False,self.num_zeros), Type ))
1156
1157     def update_sending_tab(self):
1158         # detect addresses that are not mine in history, add them here...
1159         self.addressbook_list.clear()
1160         #for alias, v in self.wallet.aliases.items():
1161         #    s, target = v
1162         #    label = self.wallet.labels.get(alias)
1163         #    self.addressbook_list.append((alias, label, '-'))
1164             
1165         for address in self.wallet.addressbook:
1166             label = self.wallet.labels.get(address)
1167             n = self.wallet.get_num_tx(address)
1168             self.addressbook_list.append((address, label, "%d"%n))
1169
1170     def update_history_tab(self):
1171         cursor = self.history_treeview.get_cursor()[0]
1172         self.history_list.clear()
1173
1174         for item in self.wallet.get_tx_history():
1175             tx_hash, conf, is_mine, value, fee, balance, timestamp = item
1176             if conf > 0:
1177                 try:
1178                     time_str = datetime.datetime.fromtimestamp( timestamp).isoformat(' ')[:-3]
1179                 except Exception:
1180                     time_str = "------"
1181                 conf_icon = Gtk.STOCK_APPLY
1182             elif conf == -1:
1183                 time_str = 'unverified'
1184                 conf_icon = None
1185             else:
1186                 time_str = 'pending'
1187                 conf_icon = Gtk.STOCK_EXECUTE
1188
1189             label, is_default_label = self.wallet.get_label(tx_hash)
1190             tooltip = tx_hash + "\n%d confirmations"%conf if tx_hash else ''
1191             details = self.get_tx_details(tx_hash)
1192
1193             self.history_list.prepend( [tx_hash, conf_icon, time_str, label, is_default_label,
1194                                         format_satoshis(value,True,self.num_zeros, whitespaces=True),
1195                                         format_satoshis(balance,False,self.num_zeros, whitespaces=True), tooltip, details] )
1196         if cursor: self.history_treeview.set_cursor( cursor )
1197
1198
1199     def get_tx_details(self, tx_hash):
1200         import datetime
1201         if not tx_hash: return ''
1202         tx = self.wallet.transactions.get(tx_hash)
1203         is_relevant, is_mine, v, fee = self.wallet.get_tx_value(tx)
1204         conf, timestamp = self.wallet.verifier.get_confirmations(tx_hash)
1205
1206         if timestamp:
1207             time_str = datetime.datetime.fromtimestamp(timestamp).isoformat(' ')[:-3]
1208         else:
1209             time_str = 'pending'
1210
1211         inputs = map(lambda x: x.get('address'), tx.inputs)
1212         outputs = map(lambda x: x.get('address'), tx.d['outputs'])
1213         tx_details = "Transaction Details" +"\n\n" \
1214             + "Transaction ID:\n" + tx_hash + "\n\n" \
1215             + "Status: %d confirmations\n"%conf
1216         if is_mine:
1217             if fee: 
1218                 tx_details += "Amount sent: %s\n"% format_satoshis(v-fee, False) \
1219                               + "Transaction fee: %s\n"% format_satoshis(fee, False)
1220             else:
1221                 tx_details += "Amount sent: %s\n"% format_satoshis(v, False) \
1222                               + "Transaction fee: unknown\n"
1223         else:
1224             tx_details += "Amount received: %s\n"% format_satoshis(v, False) \
1225
1226         tx_details += "Date: %s\n\n"%time_str \
1227             + "Inputs:\n-"+ '\n-'.join(inputs) + "\n\n" \
1228             + "Outputs:\n-"+ '\n-'.join(outputs)
1229
1230         return tx_details
1231
1232
1233
1234     def newaddress_dialog(self, w):
1235
1236         title = "New Contact" 
1237         dialog = Gtk.Dialog(title, parent=self.window, 
1238                             flags=Gtk.DialogFlags.MODAL,
1239                             buttons= ("cancel", 0, "ok",1)  )
1240         dialog.show()
1241
1242         label = Gtk.HBox()
1243         label_label = Gtk.Label(label='Label:')
1244         label_label.set_size_request(120,10)
1245         label_label.show()
1246         label.pack_start(label_label, True, True, 0)
1247         label_entry = Gtk.Entry()
1248         label_entry.show()
1249         label.pack_start(label_entry, True, True, 0)
1250         label.show()
1251         dialog.vbox.pack_start(label, False, True, 5)
1252
1253         address = Gtk.HBox()
1254         address_label = Gtk.Label(label='Address:')
1255         address_label.set_size_request(120,10)
1256         address_label.show()
1257         address.pack_start(address_label, True, True, 0)
1258         address_entry = Gtk.Entry()
1259         address_entry.show()
1260         address.pack_start(address_entry, True, True, 0)
1261         address.show()
1262         dialog.vbox.pack_start(address, False, True, 5)
1263         
1264         result = dialog.run()
1265         address = address_entry.get_text()
1266         label = label_entry.get_text()
1267         dialog.destroy()
1268
1269         if result == 1:
1270             if is_valid(address):
1271                 self.wallet.add_contact(address,label)
1272                 self.update_sending_tab()
1273             else:
1274                 errorDialog = Gtk.MessageDialog(
1275                     parent=self.window,
1276                     flags=Gtk.DialogFlags.MODAL, 
1277                     buttons= Gtk.ButtonsType.CLOSE, 
1278                     message_format = "Invalid address")
1279                 errorDialog.show()
1280                 errorDialog.run()
1281                 errorDialog.destroy()
1282
1283     
1284
1285 class ElectrumGui():
1286
1287     def __init__(self, config, network):
1288         self.network = network
1289         self.config = config
1290
1291
1292     def main(self, url=None):
1293
1294         storage = WalletStorage(self.config)
1295         if not storage.file_exists:
1296             action = self.restore_or_create()
1297             if not action:
1298                 exit()
1299             self.wallet = wallet = Wallet(storage)
1300             gap = self.config.get('gap_limit', 5)
1301             if gap != 5:
1302                 wallet.gap_limit = gap
1303                 wallet.storage.put('gap_limit', gap, True)
1304
1305             if action == 'create':
1306                 seed = wallet.make_seed()
1307                 show_seed_dialog(seed, None)
1308                 r = change_password_dialog(False, None)
1309                 password = r[2] if r else None
1310                 wallet.add_seed(seed, password)
1311                 wallet.create_accounts(password)
1312                 wallet.synchronize()  # generate first addresses offline
1313
1314             elif action == 'restore':
1315                 seed = self.seed_dialog()
1316                 if not seed:
1317                     exit()
1318                 r = change_password_dialog(False, None)
1319                 password = r[2] if r else None
1320                 wallet.add_seed(seed, password)
1321                 wallet.create_accounts(password)
1322                 
1323             else:
1324                 exit()
1325         else:
1326             self.wallet = Wallet(storage)
1327             action = None
1328
1329         self.wallet.start_threads(self.network)
1330
1331         if action == 'restore':
1332             self.restore_wallet(wallet)
1333
1334         w = ElectrumWindow(self.wallet, self.config, self.network)
1335         if url: w.set_url(url)
1336         Gtk.main()
1337
1338     def restore_or_create(self):
1339         return restore_create_dialog()
1340
1341     def seed_dialog(self):
1342         return run_recovery_dialog()
1343
1344     def network_dialog(self):
1345         return run_network_dialog( self.network, parent=None )
1346
1347
1348     def restore_wallet(self, wallet):
1349
1350         dialog = Gtk.MessageDialog(
1351             parent = None,
1352             flags = Gtk.DialogFlags.MODAL, 
1353             buttons = Gtk.ButtonsType.CANCEL, 
1354             message_format = "Please wait..."  )
1355         dialog.show()
1356
1357         def recover_thread( wallet, dialog ):
1358             wallet.restore(lambda x:x)
1359             GObject.idle_add( dialog.destroy )
1360
1361         thread.start_new_thread( recover_thread, ( wallet, dialog ) )
1362         r = dialog.run()
1363         dialog.destroy()
1364         if r==Gtk.ResponseType.CANCEL: return False
1365         if not wallet.is_found():
1366             show_message("No transactions found for this seed")
1367
1368         return True