electrum4a.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
  21
  22 import android
  23
  24 from interface import WalletSynchronizer
  25 from wallet import Wallet, format_satoshis
  26 import mnemonic
  27 from decimal import Decimal
  28 import datetime, re
  29
  30
  31
  32 def modal_dialog(title, msg = None):
  33     droid.dialogCreateAlert(title,msg)
  34     droid.dialogSetPositiveButtonText('OK')
  35     droid.dialogShow()
  36     droid.dialogGetResponse()
  37     droid.dialogDismiss()
  38
  39 def modal_input(title, msg, value = None, etype=None):
  40     droid.dialogCreateInput(title, msg, value, etype)
  41     droid.dialogSetPositiveButtonText('OK')
  42     droid.dialogSetNegativeButtonText('Cancel')
  43     droid.dialogShow()
  44     response = droid.dialogGetResponse().result
  45     droid.dialogDismiss()
  46     if response.get('which') == 'positive':
  47         return response.get('value')
  48
  49 def modal_question(q, msg, pos_text = 'OK', neg_text = 'Cancel'):
  50     droid.dialogCreateAlert(q, msg)
  51     droid.dialogSetPositiveButtonText(pos_text)
  52     droid.dialogSetNegativeButtonText(neg_text)
  53     droid.dialogShow()
  54     response = droid.dialogGetResponse().result
  55     droid.dialogDismiss()
  56     return response.get('which') == 'positive'
  57
  58 def edit_label(addr):
  59     v = modal_input('Edit label',None,wallet.labels.get(addr))
  60     if v is not None:
  61         if v:
  62             wallet.labels[addr] = v
  63         else:
  64             if addr in wallet.labels.keys():
  65                 wallet.labels.pop(addr)
  66         wallet.update_tx_history()
  67         wallet.save()
  68         droid.fullSetProperty("labelTextView", "text", v)
  69
  70 def select_from_contacts():
  71     title = 'Contacts:'
  72     droid.dialogCreateAlert(title)
  73     l = []
  74     for i in range(len(wallet.addressbook)):
  75         addr = wallet.addressbook[i]
  76         label = wallet.labels.get(addr,addr)
  77         l.append( label )
  78     droid.dialogSetItems(l)
  79     droid.dialogSetPositiveButtonText('New contact')
  80     droid.dialogShow()
  81     response = droid.dialogGetResponse().result
  82     droid.dialogDismiss()
  83
  84     if response.get('which') == 'positive':
  85         return 'newcontact'
  86
  87     result = response.get('item')
  88     print result
  89     if result is not None:
  90         addr = wallet.addressbook[result]
  91         return addr
  92
  93
  94 def select_from_addresses():
  95     droid.dialogCreateAlert("Addresses:")
  96     l = []
  97     for i in range(len(wallet.addresses)):
  98         addr = wallet.addresses[i]
  99         label = wallet.labels.get(addr,addr)
 100         l.append( label )
 101     droid.dialogSetItems(l)
 102     droid.dialogShow()
 103     response = droid.dialogGetResponse()
 104     result = response.result.get('item')
 105     droid.dialogDismiss()
 106     if result is not None:
 107         addr = wallet.addresses[result]
 108         return addr
 109
 110
 111 def protocol_name(p):
 112     if p == 't': return 'TCP/stratum'
 113     if p == 'h': return 'HTTP/Stratum'
 114     if p == 'n': return 'TCP/native'
 115
 116 def protocol_dialog(host, protocol, z):
 117     droid.dialogCreateAlert('Protocol',host)
 118     if z:
 119         protocols = z.keys()
 120     else:
 121         protocols = ['t','h','n']
 122     l = []
 123     current = protocols.index(protocol)
 124     for p in protocols:
 125         l.append(protocol_name(p))
 126     droid.dialogSetSingleChoiceItems(l, current)
 127     droid.dialogSetPositiveButtonText('OK')
 128     droid.dialogSetNegativeButtonText('Cancel')
 129     droid.dialogShow()
 130     response = droid.dialogGetResponse().result
 131     if not response: return
 132     if response.get('which') == 'positive':
 133         response = droid.dialogGetSelectedItems().result[0]
 134         droid.dialogDismiss()
 135         p = protocols[response]
 136         port = z[p]
 137         return host + ':' + port + ':' + p
 138
 139
 140
 141
 142 def make_layout(s, scrollable = False):
 143     content = """
 144
 145       <LinearLayout
 146         android:id="@+id/zz"
 147         android:layout_width="match_parent"
 148         android:layout_height="wrap_content"
 149         android:background="#ff222222">
 150
 151         <TextView
 152           android:id="@+id/textElectrum"
 153           android:text="Electrum"
 154           android:textSize="7pt"
 155           android:textColor="#ff4444ff"
 156           android:gravity="left"
 157           android:layout_height="wrap_content"
 158           android:layout_width="match_parent"
 159         />
 160       </LinearLayout>
 161
 162         %s   """%s
 163
 164     if scrollable:
 165         content = """
 166       <ScrollView
 167         android:id="@+id/scrollview"
 168         android:layout_width="match_parent"
 169         android:layout_height="match_parent" >
 170
 171       <LinearLayout
 172         android:orientation="vertical"
 173         android:layout_width="match_parent"
 174         android:layout_height="wrap_content" >
 175
 176       %s
 177
 178       </LinearLayout>
 179       </ScrollView>
 180       """%content
 181
 182
 183     return """<?xml version="1.0" encoding="utf-8"?>
 184       <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 185         android:id="@+id/background"
 186         android:orientation="vertical"
 187         android:layout_width="match_parent"
 188         android:layout_height="match_parent"
 189         android:background="#ff000022">
 190
 191       %s
 192       </LinearLayout>"""%content
 193
 194
 195
 196
 197 def main_layout():
 198     return make_layout("""
 199         <TextView android:id="@+id/balanceTextView"
 200                 android:layout_width="match_parent"
 201                 android:text=""
 202                 android:textColor="#ffffffff"
 203                 android:textAppearance="?android:attr/textAppearanceLarge"
 204                 android:padding="7dip"
 205                 android:textSize="8pt"
 206                 android:gravity="center_vertical|center_horizontal|left">
 207         </TextView>
 208
 209         <TextView android:id="@+id/historyTextView"
 210                 android:layout_width="match_parent"
 211                 android:layout_height="wrap_content"
 212                 android:text="Recent transactions"
 213                 android:textAppearance="?android:attr/textAppearanceLarge"
 214                 android:gravity="center_vertical|center_horizontal|center">
 215         </TextView>
 216
 217         %s """%get_history_layout(15),True)
 218
 219
 220
 221 def qr_layout(addr):
 222     return make_layout("""
 223
 224      <TextView android:id="@+id/addrTextView"
 225                 android:layout_width="match_parent"
 226                 android:layout_height="50"
 227                 android:text="%s"
 228                 android:textAppearance="?android:attr/textAppearanceLarge"
 229                 android:gravity="center_vertical|center_horizontal|center">
 230      </TextView>
 231
 232      <ImageView
 233         android:id="@+id/qrView"
 234         android:gravity="center"
 235         android:layout_width="match_parent"
 236         android:layout_height="350"
 237         android:antialias="false"
 238         android:src="file:///sdcard/sl4a/qrcode.bmp" />
 239
 240      <TextView android:id="@+id/labelTextView"
 241                 android:layout_width="match_parent"
 242                 android:layout_height="50"
 243                 android:text="%s"
 244                 android:textAppearance="?android:attr/textAppearanceLarge"
 245                 android:gravity="center_vertical|center_horizontal|center">
 246      </TextView>
 247
 248      """%(addr,wallet.labels.get(addr,'')), True)
 249
 250 payto_layout = make_layout("""
 251
 252         <TextView android:id="@+id/recipientTextView"
 253                 android:layout_width="match_parent"
 254                 android:layout_height="wrap_content"
 255                 android:text="Pay to:"
 256                 android:textAppearance="?android:attr/textAppearanceLarge"
 257                 android:gravity="left">
 258         </TextView>
 259
 260
 261         <EditText android:id="@+id/recipient"
 262                 android:layout_width="match_parent"
 263                 android:layout_height="wrap_content"
 264                 android:tag="Tag Me" android:inputType="text">
 265         </EditText>
 266
 267         <LinearLayout android:id="@+id/linearLayout1"
 268                 android:layout_width="match_parent"
 269                 android:layout_height="wrap_content">
 270                 <Button android:id="@+id/buttonQR" android:layout_width="wrap_content"
 271                         android:layout_height="wrap_content" android:text="From QR code"></Button>
 272                 <Button android:id="@+id/buttonContacts" android:layout_width="wrap_content"
 273                         android:layout_height="wrap_content" android:text="From Contacts"></Button>
 274         </LinearLayout>
 275
 276
 277         <TextView android:id="@+id/labelTextView"
 278                 android:layout_width="match_parent"
 279                 android:layout_height="wrap_content"
 280                 android:text="Description:"
 281                 android:textAppearance="?android:attr/textAppearanceLarge"
 282                 android:gravity="left">
 283         </TextView>
 284
 285         <EditText android:id="@+id/label"
 286                 android:layout_width="match_parent"
 287                 android:layout_height="wrap_content"
 288                 android:tag="Tag Me" android:inputType="text">
 289         </EditText>
 290
 291         <TextView android:id="@+id/amountLabelTextView"
 292                 android:layout_width="match_parent"
 293                 android:layout_height="wrap_content"
 294                 android:text="Amount:"
 295                 android:textAppearance="?android:attr/textAppearanceLarge"
 296                 android:gravity="left">
 297         </TextView>
 298
 299         <EditText android:id="@+id/amount"
 300                 android:layout_width="match_parent"
 301                 android:layout_height="wrap_content"
 302                 android:tag="Tag Me" android:inputType="numberDecimal">
 303         </EditText>
 304
 305         <LinearLayout android:layout_width="match_parent"
 306                 android:layout_height="wrap_content" android:id="@+id/linearLayout1">
 307                 <Button android:id="@+id/buttonPay" android:layout_width="wrap_content"
 308                         android:layout_height="wrap_content" android:text="Send"></Button>
 309         </LinearLayout>""",False)
 310
 311
 312
 313 settings_layout = make_layout(""" <ListView
 314            android:id="@+id/myListView"
 315            android:layout_width="match_parent"
 316            android:layout_height="wrap_content" />""")
 317
 318
 319
 320 def get_history_values(n):
 321     values = []
 322     h = wallet.get_tx_history()
 323
 324     length = min(n, len(h))
 325     for i in range(length):
 326         line = h[-i-1]
 327         v = line['value']
 328         try:
 329             dt = datetime.datetime.fromtimestamp( line['timestamp'] )
 330             if dt.date() == dt.today().date():
 331                 time_str = str( dt.time() )
 332             else:
 333                 time_str = str( dt.date() )
 334             conf = 'v'
 335
 336         except:
 337             print line['timestamp']
 338             time_str = 'pending'
 339             conf = 'o'
 340
 341         tx_hash = line['tx_hash']
 342         label = wallet.labels.get(tx_hash)
 343         is_default_label = (label == '') or (label is None)
 344         if is_default_label: label = line['default_label']
 345         values.append((conf, '  ' + time_str, '  ' + format_satoshis(v,True), '  ' + label ))
 346
 347     return values
 348
 349
 350 def get_history_layout(n):
 351     rows = ""
 352     i = 0
 353     values = get_history_values(n)
 354     for v in values:
 355         a,b,c,d = v
 356         color = "#ff00ff00" if a == 'v' else "#ffff0000"
 357         rows += """
 358         <TableRow>
 359           <TextView
 360             android:id="@+id/hl_%d_col1"
 361             android:layout_column="0"
 362             android:text="%s"
 363             android:textColor="%s"
 364             android:padding="3" />
 365           <TextView
 366             android:id="@+id/hl_%d_col2"
 367             android:layout_column="1"
 368             android:text="%s"
 369             android:padding="3" />
 370           <TextView
 371             android:id="@+id/hl_%d_col3"
 372             android:layout_column="2"
 373             android:text="%s"
 374             android:padding="3" />
 375           <TextView
 376             android:id="@+id/hl_%d_col4"
 377             android:layout_column="3"
 378             android:text="%s"
 379             android:padding="4" />
 380         </TableRow>"""%(i,a,color,i,b,i,c,i,d)
 381         i += 1
 382
 383     output = """
 384 <TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
 385     android:layout_width="fill_parent"
 386     android:layout_height="wrap_content"
 387     android:stretchColumns="0,1,2,3">
 388     %s
 389 </TableLayout>"""% rows
 390     return output
 391
 392
 393 def set_history_layout(n):
 394     values = get_history_values(n)
 395     i = 0
 396     for v in values:
 397         a,b,c,d = v
 398         droid.fullSetProperty("hl_%d_col1"%i,"text", a)
 399
 400         if a == 'v':
 401             droid.fullSetProperty("hl_%d_col1"%i, "textColor","#ff00ff00")
 402         else:
 403             droid.fullSetProperty("hl_%d_col1"%i, "textColor","#ffff0000")
 404
 405         droid.fullSetProperty("hl_%d_col2"%i,"text", b)
 406         droid.fullSetProperty("hl_%d_col3"%i,"text", c)
 407         droid.fullSetProperty("hl_%d_col4"%i,"text", d)
 408         i += 1
 409
 410
 411
 412
 413 status_text = ''
 414 def update_layout():
 415     global status_text
 416     if not wallet.interface.is_connected:
 417         text = "Not connected..."
 418     elif wallet.blocks == 0:
 419         text = "Server not ready"
 420     elif not wallet.up_to_date:
 421         text = "Synchronizing..."
 422     else:
 423         c, u = wallet.get_balance()
 424         text = "Balance:"+format_satoshis(c)
 425         if u : text += '   [' + format_satoshis(u,True).strip() + ']'
 426
 427
 428     # vibrate if status changed
 429     if text != status_text:
 430         if status_text and wallet.interface.is_connected and wallet.up_to_date:
 431             droid.vibrate()
 432         status_text = text
 433
 434     droid.fullSetProperty("balanceTextView", "text", status_text)
 435
 436     if wallet.up_to_date:
 437         set_history_layout(15)
 438
 439
 440
 441
 442 def pay_to(recipient, amount, fee, label):
 443
 444     if wallet.use_encryption:
 445         password  = droid.dialogGetPassword('Password').result
 446         if not password: return
 447     else:
 448         password = None
 449
 450     droid.dialogCreateSpinnerProgress("Electrum", "signing transaction...")
 451     droid.dialogShow()
 452
 453     try:
 454         tx = wallet.mktx( recipient, amount, label, password, fee)
 455     except BaseException, e:
 456         modal_dialog('error', e.message)
 457         droid.dialogDismiss()
 458         return
 459
 460     droid.dialogDismiss()
 461
 462     r, h = wallet.sendtx( tx )
 463     if r:
 464         modal_dialog('Payment sent', h)
 465         return True
 466     else:
 467         modal_dialog('Error', h)
 468
 469
 470
 471
 472
 473 def recover():
 474
 475     droid.dialogCreateAlert("Wallet not found","Do you want to create a new wallet, or restore an existing one?")
 476     droid.dialogSetPositiveButtonText('Create')
 477     droid.dialogSetNeutralButtonText('Restore')
 478     droid.dialogSetNegativeButtonText('Cancel')
 479     droid.dialogShow()
 480     response = droid.dialogGetResponse().result
 481     droid.dialogDismiss()
 482     if response.get('which') == 'negative':
 483         exit(1)
 484
 485     is_recovery = response.get('which') == 'neutral'
 486
 487     if not is_recovery:
 488         wallet.new_seed(None)
 489     else:
 490         if modal_question("Input method",None,'QR Code', 'mnemonic'):
 491             code = droid.scanBarcode()
 492             r = code.result
 493             if r:
 494                 seed = r['extras']['SCAN_RESULT']
 495             else:
 496                 exit(1)
 497         else:
 498             m = modal_input('Mnemonic','please enter your code')
 499             try:
 500                 seed = mnemonic.mn_decode(m.split(' '))
 501             except:
 502                 modal_dialog('error: could not decode this seed')
 503                 exit(1)
 504
 505         wallet.seed = str(seed)
 506
 507     modal_dialog('Your seed is:', wallet.seed)
 508     modal_dialog('Mnemonic code:', ' '.join(mnemonic.mn_encode(wallet.seed)) )
 509
 510     msg = "recovering wallet..." if is_recovery else "creating wallet..."
 511     droid.dialogCreateSpinnerProgress("Electrum", msg)
 512     droid.dialogShow()
 513
 514     wallet.init_mpk( wallet.seed )
 515     WalletSynchronizer(wallet,True).start()
 516     wallet.update()
 517
 518     droid.dialogDismiss()
 519     droid.vibrate()
 520
 521     if is_recovery:
 522         if wallet.is_found():
 523             wallet.update_tx_history()
 524             wallet.fill_addressbook()
 525             modal_dialog("recovery successful")
 526         else:
 527             if not modal_question("no transactions found for this seed","do you want to keep this wallet?"):
 528                 exit(1)
 529
 530     change_password_dialog()
 531     wallet.save()
 532
 533
 534
 535 def make_new_contact():
 536     code = droid.scanBarcode()
 537     r = code.result
 538     if r:
 539         data = r['extras']['SCAN_RESULT']
 540         if data:
 541             if re.match('^bitcoin:', data):
 542                 address, _, _, _, _, _, _ = wallet.parse_url(data, None, None)
 543             elif wallet.is_valid(data):
 544                 address = data
 545             else:
 546                 address = None
 547             if address:
 548                 if modal_question('Add to contacts?', address):
 549                     wallet.addressbook.append(address)
 550                     wallet.save()
 551         else:
 552             modal_dialog('Invalid address', data)
 553
 554
 555 do_refresh = False
 556
 557 def update_callback():
 558     global do_refresh
 559     print "gui callback", wallet.interface.is_connected, wallet.up_to_date
 560     do_refresh = True
 561     droid.eventPost("refresh",'z')
 562
 563 def main_loop():
 564     global do_refresh
 565
 566     update_layout()
 567     out = None
 568     quitting = False
 569     while out is None:
 570
 571         event = droid.eventWait(1000).result
 572         if event is None:
 573             if do_refresh:
 574                 update_layout()
 575                 do_refresh = False
 576             continue
 577
 578         print "got event in main loop", repr(event)
 579         if event == 'OK': continue
 580         if event is None: continue
 581         #if event["name"]=="refresh":
 582
 583
 584         # request 2 taps before we exit
 585         if event["name"]=="key":
 586             if event["data"]["key"] == '4':
 587                 if quitting:
 588                     out = 'quit'
 589                 else:
 590                     quitting = True
 591         else: quitting = False
 592
 593         if event["name"]=="click":
 594             id=event["data"]["id"]
 595
 596         elif event["name"]=="settings":
 597             out = 'settings'
 598
 599         elif event["name"] in menu_commands:
 600             out = event["name"]
 601
 602             if out == 'contacts':
 603                 global contact_addr
 604                 contact_addr = select_from_contacts()
 605                 if contact_addr == 'newcontact':
 606                     make_new_contact()
 607                     contact_addr = None
 608                 if not contact_addr:
 609                     out = None
 610
 611             elif out == "receive":
 612                 global receive_addr
 613                 receive_addr = select_from_addresses()
 614                 if receive_addr:
 615                     amount = modal_input('Amount', 'Amount you want receive. ', '', "numberDecimal")
 616                     if amount:
 617                         receive_addr = 'bitcoin:%s?amount=%s'%(receive_addr, amount)
 618
 619                 if not receive_addr:
 620                     out = None
 621
 622
 623     return out
 624
 625
 626 def payto_loop():
 627     global recipient
 628     if recipient:
 629         droid.fullSetProperty("recipient","text",recipient)
 630         recipient = None
 631
 632     out = None
 633     while out is None:
 634         event = droid.eventWait().result
 635         print "got event in payto loop", event
 636
 637         if event["name"] == "click":
 638             id = event["data"]["id"]
 639
 640             if id=="buttonPay":
 641
 642                 droid.fullQuery()
 643                 recipient = droid.fullQueryDetail("recipient").result.get('text')
 644                 label  = droid.fullQueryDetail("label").result.get('text')
 645                 amount = droid.fullQueryDetail('amount').result.get('text')
 646
 647                 if not wallet.is_valid(recipient):
 648                     modal_dialog('Error','Invalid Bitcoin address')
 649                     continue
 650
 651                 try:
 652                     amount = int( 100000000 * Decimal(amount) )
 653                 except:
 654                     modal_dialog('Error','Invalid amount')
 655                     continue
 656
 657                 result = pay_to(recipient, amount, wallet.fee, label)
 658                 if result:
 659                     out = 'main'
 660
 661             elif id=="buttonContacts":
 662                 addr = select_from_contacts()
 663                 droid.fullSetProperty("recipient","text",addr)
 664
 665             elif id=="buttonQR":
 666                 code = droid.scanBarcode()
 667                 r = code.result
 668                 if r:
 669                     data = r['extras']['SCAN_RESULT']
 670                     if data:
 671                         if re.match('^bitcoin:', data):
 672                             payto, amount, label, _, _, _, _ = wallet.parse_url(data, None, None)
 673                             droid.fullSetProperty("recipient", "text",payto)
 674                             droid.fullSetProperty("amount", "text", amount)
 675                             droid.fullSetProperty("label", "text", label)
 676                         else:
 677                             droid.fullSetProperty("recipient", "text", data)
 678
 679
 680         elif event["name"] in menu_commands:
 681             out = event["name"]
 682
 683         elif event["name"]=="key":
 684             if event["data"]["key"] == '4':
 685                 out = 'main'
 686
 687         #elif event["name"]=="screen":
 688         #    if event["data"]=="destroy":
 689         #        out = 'main'
 690
 691     return out
 692
 693
 694 receive_addr = ''
 695 contact_addr = ''
 696 recipient = ''
 697
 698 def receive_loop():
 699     out = None
 700     while out is None:
 701         event = droid.eventWait().result
 702         print "got event", event
 703         if event["name"]=="key":
 704             if event["data"]["key"] == '4':
 705                 out = 'main'
 706
 707         elif event["name"]=="clipboard":
 708             droid.setClipboard(receive_addr)
 709             modal_dialog('Address copied to clipboard',receive_addr)
 710
 711         elif event["name"]=="edit":
 712             edit_label(receive_addr)
 713
 714     return out
 715
 716 def contacts_loop():
 717     global recipient
 718     out = None
 719     while out is None:
 720         event = droid.eventWait().result
 721         print "got event", event
 722         if event["name"]=="key":
 723             if event["data"]["key"] == '4':
 724                 out = 'main'
 725
 726         elif event["name"]=="clipboard":
 727             droid.setClipboard(contact_addr)
 728             modal_dialog('Address copied to clipboard',contact_addr)
 729
 730         elif event["name"]=="edit":
 731             edit_label(contact_addr)
 732
 733         elif event["name"]=="paytocontact":
 734             recipient = contact_addr
 735             out = 'send'
 736
 737         elif event["name"]=="deletecontact":
 738             if modal_question('delete contact', contact_addr):
 739                 out = 'main'
 740
 741     return out
 742
 743
 744 def server_dialog(plist):
 745     droid.dialogCreateAlert("Public servers")
 746     droid.dialogSetItems( plist.keys() )
 747     droid.dialogSetPositiveButtonText('Private server')
 748     droid.dialogShow()
 749     response = droid.dialogGetResponse().result
 750     droid.dialogDismiss()
 751
 752     if response.get('which') == 'positive':
 753         return modal_input('Private server', None)
 754
 755     i = response.get('item')
 756     if i is not None:
 757         response = plist.keys()[i]
 758         return response
 759
 760
 761 def seed_dialog():
 762     if wallet.use_encryption:
 763         password  = droid.dialogGetPassword('Seed').result
 764         if not password: return
 765     else:
 766         password = None
 767
 768     try:
 769         seed = wallet.pw_decode( wallet.seed, password)
 770     except:
 771         modal_dialog('error','incorrect password')
 772         return
 773
 774     modal_dialog('Your seed is',seed)
 775     modal_dialog('Mnemonic code:', ' '.join(mnemonic.mn_encode(seed)) )
 776
 777 def change_password_dialog():
 778     if wallet.use_encryption:
 779         password  = droid.dialogGetPassword('Your wallet is encrypted').result
 780         if password is None: return
 781     else:
 782         password = None
 783
 784     try:
 785         seed = wallet.pw_decode( wallet.seed, password)
 786     except:
 787         modal_dialog('error','incorrect password')
 788         return
 789
 790     new_password  = droid.dialogGetPassword('Choose a password').result
 791     if new_password == None:
 792         return
 793
 794     if new_password != '':
 795         password2  = droid.dialogGetPassword('Confirm new password').result
 796         if new_password != password2:
 797             modal_dialog('error','passwords do not match')
 798             return
 799
 800     wallet.update_password(seed, password, new_password)
 801     if new_password:
 802         modal_dialog('Password updated','your wallet is encrypted')
 803     else:
 804         modal_dialog('No password','your wallet is not encrypted')
 805     return True
 806
 807
 808 def settings_loop():
 809
 810
 811     def set_listview():
 812         server, port, p = wallet.server.split(':')
 813         fee = str( Decimal( wallet.fee)/100000000 )
 814         is_encrypted = 'yes' if wallet.use_encryption else 'no'
 815         protocol = protocol_name(p)
 816         droid.fullShow(settings_layout)
 817         droid.fullSetList("myListView",['Server: ' + server, 'Protocol: '+ protocol, 'Port: '+port, 'Transaction fee: '+fee, 'Password: '+is_encrypted, 'Seed'])
 818
 819     set_listview()
 820
 821     out = None
 822     while out is None:
 823         event = droid.eventWait().result
 824         print "got event", event
 825         if event == 'OK': continue
 826         if not event: continue
 827
 828         plist = {}
 829         for item in wallet.interface.servers:
 830             host, pp = item
 831             z = {}
 832             for item2 in pp:
 833                 protocol, port = item2
 834                 z[protocol] = port
 835             plist[host] = z
 836
 837         if event["name"] == "itemclick":
 838             pos = event["data"]["position"]
 839             host, port, protocol = wallet.server.split(':')
 840
 841             if pos == "0": #server
 842                 host = server_dialog(plist)
 843                 if host:
 844                     p = plist[host]
 845                     port = p['t']
 846                     srv = host + ':' + port + ':t'
 847                     try:
 848                         wallet.set_server(srv)
 849                     except:
 850                         modal_dialog('error','invalid server')
 851                     set_listview()
 852
 853             elif pos == "1": #protocol
 854                 if host in plist:
 855                     srv = protocol_dialog(host, protocol, plist[host])
 856                     if srv:
 857                         try:
 858                             wallet.set_server(srv)
 859                         except:
 860                             modal_dialog('error','invalid server')
 861                         set_listview()
 862
 863             elif pos == "2": #port
 864                 a_port = modal_input('Port number', 'If you use a public server, this field is set automatically when you set the protocol', port, "number")
 865                 if a_port:
 866                     if a_port != port:
 867                         srv = host + ':' + a_port + ':'+ protocol
 868                         try:
 869                             wallet.set_server(srv)
 870                         except:
 871                             modal_dialog('error','invalid port number')
 872                         set_listview()
 873
 874             elif pos == "3": #fee
 875                 fee = modal_input('Transaction fee', 'The fee will be this amount multiplied by the number of inputs in your transaction. ', str( Decimal( wallet.fee)/100000000 ), "numberDecimal")
 876                 if fee:
 877                     try:
 878                         fee = int( 100000000 * Decimal(fee) )
 879                     except:
 880                         modal_dialog('error','invalid fee value')
 881                     if wallet.fee != fee:
 882                         wallet.fee = fee
 883                         wallet.save()
 884                         set_listview()
 885
 886             elif pos == "4":
 887                 if change_password_dialog():
 888                     set_listview()
 889
 890             elif pos == "5":
 891                 seed_dialog()
 892
 893
 894         elif event["name"] in menu_commands:
 895             out = event["name"]
 896
 897         elif event["name"] == 'cancel':
 898             out = 'main'
 899
 900         elif event["name"] == "key":
 901             if event["data"]["key"] == '4':
 902                 out = 'main'
 903
 904     return out
 905
 906
 907
 908
 909 menu_commands = ["send", "receive", "settings", "contacts", "main"]
 910 droid = android.Android()
 911 wallet = Wallet()
 912 wallet.register_callback(update_callback)
 913
 914 wallet.set_path("/sdcard/electrum.dat")
 915 wallet.read()
 916 if not wallet.file_exists:
 917     recover()
 918 else:
 919     WalletSynchronizer(wallet,True).start()
 920
 921
 922 s = 'main'
 923
 924 def add_menu(s):
 925     droid.clearOptionsMenu()
 926     if s == 'main':
 927         droid.addOptionsMenuItem("Send","send",None,"")
 928         droid.addOptionsMenuItem("Receive","receive",None,"")
 929         droid.addOptionsMenuItem("Contacts","contacts",None,"")
 930         droid.addOptionsMenuItem("Settings","settings",None,"")
 931     elif s == 'receive':
 932         droid.addOptionsMenuItem("Copy","clipboard",None,"")
 933         droid.addOptionsMenuItem("Label","edit",None,"")
 934     elif s == 'contacts':
 935         droid.addOptionsMenuItem("Copy","clipboard",None,"")
 936         droid.addOptionsMenuItem("Label","edit",None,"")
 937         droid.addOptionsMenuItem("Pay to","paytocontact",None,"")
 938         #droid.addOptionsMenuItem("Delete","deletecontact",None,"")
 939
 940 def make_bitmap(addr):
 941     # fixme: this is highly inefficient
 942     droid.dialogCreateSpinnerProgress("please wait")
 943     droid.dialogShow()
 944     try:
 945         import pyqrnative, bmp
 946         qr = pyqrnative.QRCode(4, pyqrnative.QRErrorCorrectLevel.L)
 947         qr.addData(addr)
 948         qr.make()
 949         k = qr.getModuleCount()
 950         assert k == 33
 951         bmp.save_qrcode(qr,"/sdcard/sl4a/qrcode.bmp")
 952     finally:
 953         droid.dialogDismiss()
 954
 955
 956
 957 while True:
 958     add_menu(s)
 959     if s == 'main':
 960         droid.fullShow(main_layout())
 961         s = main_loop()
 962         #droid.fullDismiss()
 963
 964     elif s == 'send':
 965         droid.fullShow(payto_layout)
 966         s = payto_loop()
 967         #droid.fullDismiss()
 968
 969     elif s == 'receive':
 970         make_bitmap(receive_addr)
 971         droid.fullShow(qr_layout(receive_addr))
 972         s = receive_loop()
 973
 974     elif s == 'contacts':
 975         make_bitmap(contact_addr)
 976         droid.fullShow(qr_layout(contact_addr))
 977         s = contacts_loop()
 978
 979     elif s == 'settings':
 980         #droid.fullShow(settings_layout)
 981         s = settings_loop()
 982         #droid.fullDismiss()
 983     else:
 984         break
 985
 986 droid.makeToast("Bye!")