gui/android.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 from __future__ import absolute_import
  23 import android
  24
  25 from electrum import SimpleConfig, Wallet, WalletStorage, format_satoshis, mnemonic_encode, mnemonic_decode
  26 from electrum.bitcoin import is_valid
  27 from electrum import util
  28 from decimal import Decimal
  29 import datetime, re
  30
  31
  32
  33 def modal_dialog(title, msg = None):
  34     droid.dialogCreateAlert(title,msg)
  35     droid.dialogSetPositiveButtonText('OK')
  36     droid.dialogShow()
  37     droid.dialogGetResponse()
  38     droid.dialogDismiss()
  39
  40 def modal_input(title, msg, value = None, etype=None):
  41     droid.dialogCreateInput(title, msg, value, etype)
  42     droid.dialogSetPositiveButtonText('OK')
  43     droid.dialogSetNegativeButtonText('Cancel')
  44     droid.dialogShow()
  45     response = droid.dialogGetResponse()
  46     result = response.result
  47     if result is None:
  48         print "modal input: result is none"
  49         return False
  50     droid.dialogDismiss()
  51     if result.get('which') == 'positive':
  52         return result.get('value')
  53
  54 def modal_question(q, msg, pos_text = 'OK', neg_text = 'Cancel'):
  55     droid.dialogCreateAlert(q, msg)
  56     droid.dialogSetPositiveButtonText(pos_text)
  57     droid.dialogSetNegativeButtonText(neg_text)
  58     droid.dialogShow()
  59     response = droid.dialogGetResponse()
  60     result = response.result
  61     if result is None:
  62         print "modal question: result is none"
  63         return False
  64     droid.dialogDismiss()
  65     return result.get('which') == 'positive'
  66
  67 def edit_label(addr):
  68     v = modal_input('Edit label',None,wallet.labels.get(addr))
  69     if v is not None:
  70         if v:
  71             wallet.labels[addr] = v
  72         else:
  73             if addr in wallet.labels.keys():
  74                 wallet.labels.pop(addr)
  75         wallet.update_tx_history()
  76         wallet.save()
  77         droid.fullSetProperty("labelTextView", "text", v)
  78
  79 def select_from_contacts():
  80     title = 'Contacts:'
  81     droid.dialogCreateAlert(title)
  82     l = []
  83     for i in range(len(wallet.addressbook)):
  84         addr = wallet.addressbook[i]
  85         label = wallet.labels.get(addr,addr)
  86         l.append( label )
  87     droid.dialogSetItems(l)
  88     droid.dialogSetPositiveButtonText('New contact')
  89     droid.dialogShow()
  90     response = droid.dialogGetResponse().result
  91     droid.dialogDismiss()
  92
  93     if response.get('which') == 'positive':
  94         return 'newcontact'
  95
  96     result = response.get('item')
  97     print result
  98     if result is not None:
  99         addr = wallet.addressbook[result]
 100         return addr
 101
 102
 103 def select_from_addresses():
 104     droid.dialogCreateAlert("Addresses:")
 105     l = []
 106     addresses = wallet.addresses()
 107     for i in range(len(addresses)):
 108         addr = addresses[i]
 109         label = wallet.labels.get(addr,addr)
 110         l.append( label )
 111     droid.dialogSetItems(l)
 112     droid.dialogShow()
 113     response = droid.dialogGetResponse()
 114     result = response.result.get('item')
 115     droid.dialogDismiss()
 116     if result is not None:
 117         addr = addresses[result]
 118         return addr
 119
 120
 121 def protocol_name(p):
 122     if p == 't': return 'TCP'
 123     if p == 'h': return 'HTTP'
 124     if p == 's': return 'SSL'
 125     if p == 'g': return 'HTTPS'
 126
 127
 128 def protocol_dialog(host, protocol, z):
 129     droid.dialogCreateAlert('Protocol',host)
 130     if z:
 131         protocols = z.keys()
 132     else:
 133         protocols = 'thsg'
 134     l = []
 135     current = protocols.index(protocol)
 136     for p in protocols:
 137         l.append(protocol_name(p))
 138     droid.dialogSetSingleChoiceItems(l, current)
 139     droid.dialogSetPositiveButtonText('OK')
 140     droid.dialogSetNegativeButtonText('Cancel')
 141     droid.dialogShow()
 142     response = droid.dialogGetResponse().result
 143     selected_item = droid.dialogGetSelectedItems().result
 144     droid.dialogDismiss()
 145
 146     if not response: return
 147     if not selected_item: return
 148     if response.get('which') == 'positive':
 149         return protocols[selected_item[0]]
 150
 151
 152
 153
 154 def make_layout(s, scrollable = False):
 155     content = """
 156
 157       <LinearLayout
 158         android:id="@+id/zz"
 159         android:layout_width="match_parent"
 160         android:layout_height="wrap_content"
 161         android:background="#ff222222">
 162
 163         <TextView
 164           android:id="@+id/textElectrum"
 165           android:text="Electrum"
 166           android:textSize="7pt"
 167           android:textColor="#ff4444ff"
 168           android:gravity="left"
 169           android:layout_height="wrap_content"
 170           android:layout_width="match_parent"
 171         />
 172       </LinearLayout>
 173
 174         %s   """%s
 175
 176     if scrollable:
 177         content = """
 178       <ScrollView
 179         android:id="@+id/scrollview"
 180         android:layout_width="match_parent"
 181         android:layout_height="match_parent" >
 182
 183       <LinearLayout
 184         android:orientation="vertical"
 185         android:layout_width="match_parent"
 186         android:layout_height="wrap_content" >
 187
 188       %s
 189
 190       </LinearLayout>
 191       </ScrollView>
 192       """%content
 193
 194
 195     return """<?xml version="1.0" encoding="utf-8"?>
 196       <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 197         android:id="@+id/background"
 198         android:orientation="vertical"
 199         android:layout_width="match_parent"
 200         android:layout_height="match_parent"
 201         android:background="#ff000022">
 202
 203       %s
 204       </LinearLayout>"""%content
 205
 206
 207
 208
 209 def main_layout():
 210     return make_layout("""
 211         <TextView android:id="@+id/balanceTextView"
 212                 android:layout_width="match_parent"
 213                 android:text=""
 214                 android:textColor="#ffffffff"
 215                 android:textAppearance="?android:attr/textAppearanceLarge"
 216                 android:padding="7dip"
 217                 android:textSize="8pt"
 218                 android:gravity="center_vertical|center_horizontal|left">
 219         </TextView>
 220
 221         <TextView android:id="@+id/historyTextView"
 222                 android:layout_width="match_parent"
 223                 android:layout_height="wrap_content"
 224                 android:text="Recent transactions"
 225                 android:textAppearance="?android:attr/textAppearanceLarge"
 226                 android:gravity="center_vertical|center_horizontal|center">
 227         </TextView>
 228
 229         %s """%get_history_layout(15),True)
 230
 231
 232
 233 def qr_layout(addr):
 234     return make_layout("""
 235
 236      <TextView android:id="@+id/addrTextView"
 237                 android:layout_width="match_parent"
 238                 android:layout_height="50"
 239                 android:text="%s"
 240                 android:textAppearance="?android:attr/textAppearanceLarge"
 241                 android:gravity="center_vertical|center_horizontal|center">
 242      </TextView>
 243
 244      <ImageView
 245         android:id="@+id/qrView"
 246         android:gravity="center"
 247         android:layout_width="match_parent"
 248         android:layout_height="350"
 249         android:antialias="false"
 250         android:src="file:///sdcard/sl4a/qrcode.bmp" />
 251
 252      <TextView android:id="@+id/labelTextView"
 253                 android:layout_width="match_parent"
 254                 android:layout_height="50"
 255                 android:text="%s"
 256                 android:textAppearance="?android:attr/textAppearanceLarge"
 257                 android:gravity="center_vertical|center_horizontal|center">
 258      </TextView>
 259
 260      """%(addr,wallet.labels.get(addr,'')), True)
 261
 262 payto_layout = make_layout("""
 263
 264         <TextView android:id="@+id/recipientTextView"
 265                 android:layout_width="match_parent"
 266                 android:layout_height="wrap_content"
 267                 android:text="Pay to:"
 268                 android:textAppearance="?android:attr/textAppearanceLarge"
 269                 android:gravity="left">
 270         </TextView>
 271
 272
 273         <EditText android:id="@+id/recipient"
 274                 android:layout_width="match_parent"
 275                 android:layout_height="wrap_content"
 276                 android:tag="Tag Me" android:inputType="text">
 277         </EditText>
 278
 279         <LinearLayout android:id="@+id/linearLayout1"
 280                 android:layout_width="match_parent"
 281                 android:layout_height="wrap_content">
 282                 <Button android:id="@+id/buttonQR" android:layout_width="wrap_content"
 283                         android:layout_height="wrap_content" android:text="From QR code"></Button>
 284                 <Button android:id="@+id/buttonContacts" android:layout_width="wrap_content"
 285                         android:layout_height="wrap_content" android:text="From Contacts"></Button>
 286         </LinearLayout>
 287
 288
 289         <TextView android:id="@+id/labelTextView"
 290                 android:layout_width="match_parent"
 291                 android:layout_height="wrap_content"
 292                 android:text="Description:"
 293                 android:textAppearance="?android:attr/textAppearanceLarge"
 294                 android:gravity="left">
 295         </TextView>
 296
 297         <EditText android:id="@+id/label"
 298                 android:layout_width="match_parent"
 299                 android:layout_height="wrap_content"
 300                 android:tag="Tag Me" android:inputType="text">
 301         </EditText>
 302
 303         <TextView android:id="@+id/amountLabelTextView"
 304                 android:layout_width="match_parent"
 305                 android:layout_height="wrap_content"
 306                 android:text="Amount:"
 307                 android:textAppearance="?android:attr/textAppearanceLarge"
 308                 android:gravity="left">
 309         </TextView>
 310
 311         <EditText android:id="@+id/amount"
 312                 android:layout_width="match_parent"
 313                 android:layout_height="wrap_content"
 314                 android:tag="Tag Me" android:inputType="numberDecimal">
 315         </EditText>
 316
 317         <LinearLayout android:layout_width="match_parent"
 318                 android:layout_height="wrap_content" android:id="@+id/linearLayout1">
 319                 <Button android:id="@+id/buttonPay" android:layout_width="wrap_content"
 320                         android:layout_height="wrap_content" android:text="Send"></Button>
 321         </LinearLayout>""",False)
 322
 323
 324
 325 settings_layout = make_layout(""" <ListView
 326            android:id="@+id/myListView"
 327            android:layout_width="match_parent"
 328            android:layout_height="wrap_content" />""")
 329
 330
 331
 332 def get_history_values(n):
 333     values = []
 334     h = wallet.get_tx_history()
 335     length = min(n, len(h))
 336     for i in range(length):
 337         tx_hash, conf, is_mine, value, fee, balance, timestamp = h[-i-1]
 338         try:
 339             dt = datetime.datetime.fromtimestamp( timestamp )
 340             if dt.date() == dt.today().date():
 341                 time_str = str( dt.time() )
 342             else:
 343                 time_str = str( dt.date() )
 344         except:
 345             time_str = 'pending'
 346
 347         conf_str = 'v' if conf else 'o'
 348         label, is_default_label = wallet.get_label(tx_hash)
 349         values.append((conf_str, '  ' + time_str, '  ' + format_satoshis(value,True), '  ' + label ))
 350
 351     return values
 352
 353
 354 def get_history_layout(n):
 355     rows = ""
 356     i = 0
 357     values = get_history_values(n)
 358     for v in values:
 359         a,b,c,d = v
 360         color = "#ff00ff00" if a == 'v' else "#ffff0000"
 361         rows += """
 362         <TableRow>
 363           <TextView
 364             android:id="@+id/hl_%d_col1"
 365             android:layout_column="0"
 366             android:text="%s"
 367             android:textColor="%s"
 368             android:padding="3" />
 369           <TextView
 370             android:id="@+id/hl_%d_col2"
 371             android:layout_column="1"
 372             android:text="%s"
 373             android:padding="3" />
 374           <TextView
 375             android:id="@+id/hl_%d_col3"
 376             android:layout_column="2"
 377             android:text="%s"
 378             android:padding="3" />
 379           <TextView
 380             android:id="@+id/hl_%d_col4"
 381             android:layout_column="3"
 382             android:text="%s"
 383             android:padding="4" />
 384         </TableRow>"""%(i,a,color,i,b,i,c,i,d)
 385         i += 1
 386
 387     output = """
 388 <TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
 389     android:layout_width="fill_parent"
 390     android:layout_height="wrap_content"
 391     android:stretchColumns="0,1,2,3">
 392     %s
 393 </TableLayout>"""% rows
 394     return output
 395
 396
 397 def set_history_layout(n):
 398     values = get_history_values(n)
 399     i = 0
 400     for v in values:
 401         a,b,c,d = v
 402         droid.fullSetProperty("hl_%d_col1"%i,"text", a)
 403
 404         if a == 'v':
 405             droid.fullSetProperty("hl_%d_col1"%i, "textColor","#ff00ff00")
 406         else:
 407             droid.fullSetProperty("hl_%d_col1"%i, "textColor","#ffff0000")
 408
 409         droid.fullSetProperty("hl_%d_col2"%i,"text", b)
 410         droid.fullSetProperty("hl_%d_col3"%i,"text", c)
 411         droid.fullSetProperty("hl_%d_col4"%i,"text", d)
 412         i += 1
 413
 414
 415
 416
 417 status_text = ''
 418 def update_layout():
 419     global status_text
 420     if not network.is_connected():
 421         text = "Not connected..."
 422     elif not wallet.up_to_date:
 423         text = "Synchronizing..."
 424     else:
 425         c, u = wallet.get_balance()
 426         text = "Balance:"+format_satoshis(c)
 427         if u : text += '   [' + format_satoshis(u,True).strip() + ']'
 428
 429
 430     # vibrate if status changed
 431     if text != status_text:
 432         if status_text and network.is_connected() and wallet.up_to_date:
 433             droid.vibrate()
 434         status_text = text
 435
 436     droid.fullSetProperty("balanceTextView", "text", status_text)
 437
 438     if wallet.up_to_date:
 439         set_history_layout(15)
 440
 441
 442
 443
 444 def pay_to(recipient, amount, fee, label):
 445
 446     if wallet.use_encryption:
 447         password  = droid.dialogGetPassword('Password').result
 448         if not password: return
 449     else:
 450         password = None
 451
 452     droid.dialogCreateSpinnerProgress("Electrum", "signing transaction...")
 453     droid.dialogShow()
 454
 455     try:
 456         tx = wallet.mktx( [(recipient, amount)], password, fee)
 457     except BaseException, e:
 458         modal_dialog('error', e.message)
 459         droid.dialogDismiss()
 460         return
 461
 462     if label:
 463         wallet.labels[tx.hash()] = label
 464
 465     droid.dialogDismiss()
 466
 467     r, h = wallet.sendtx( tx )
 468     if r:
 469         modal_dialog('Payment sent', h)
 470         return True
 471     else:
 472         modal_dialog('Error', h)
 473
 474
 475
 476
 477
 478
 479
 480 def make_new_contact():
 481     code = droid.scanBarcode()
 482     r = code.result
 483     if r:
 484         data = r['extras']['SCAN_RESULT']
 485         if data:
 486             if re.match('^bitcoin:', data):
 487                 address, _, _, _, _, _, _ = util.parse_url(data)
 488             elif is_valid(data):
 489                 address = data
 490             else:
 491                 address = None
 492             if address:
 493                 if modal_question('Add to contacts?', address):
 494                     wallet.add_contact(address)
 495         else:
 496             modal_dialog('Invalid address', data)
 497
 498
 499 do_refresh = False
 500
 501 def update_callback():
 502     global do_refresh
 503     print "gui callback", network.is_connected()
 504     do_refresh = True
 505     droid.eventPost("refresh",'z')
 506
 507 def main_loop():
 508     global do_refresh
 509
 510     update_layout()
 511     out = None
 512     quitting = False
 513     while out is None:
 514
 515         event = droid.eventWait(1000).result
 516         if event is None:
 517             if do_refresh:
 518                 update_layout()
 519                 do_refresh = False
 520             continue
 521
 522         print "got event in main loop", repr(event)
 523         if event == 'OK': continue
 524         if event is None: continue
 525         if not event.get("name"): continue
 526
 527         # request 2 taps before we exit
 528         if event["name"]=="key":
 529             if event["data"]["key"] == '4':
 530                 if quitting:
 531                     out = 'quit'
 532                 else:
 533                     quitting = True
 534         else: quitting = False
 535
 536         if event["name"]=="click":
 537             id=event["data"]["id"]
 538
 539         elif event["name"]=="settings":
 540             out = 'settings'
 541
 542         elif event["name"] in menu_commands:
 543             out = event["name"]
 544
 545             if out == 'contacts':
 546                 global contact_addr
 547                 contact_addr = select_from_contacts()
 548                 if contact_addr == 'newcontact':
 549                     make_new_contact()
 550                     contact_addr = None
 551                 if not contact_addr:
 552                     out = None
 553
 554             elif out == "receive":
 555                 global receive_addr
 556                 receive_addr = select_from_addresses()
 557                 if receive_addr:
 558                     amount = modal_input('Amount', 'Amount you want receive. ', '', "numberDecimal")
 559                     if amount:
 560                         receive_addr = 'bitcoin:%s?amount=%s'%(receive_addr, amount)
 561
 562                 if not receive_addr:
 563                     out = None
 564
 565
 566     return out
 567
 568
 569 def payto_loop():
 570     global recipient
 571     if recipient:
 572         droid.fullSetProperty("recipient","text",recipient)
 573         recipient = None
 574
 575     out = None
 576     while out is None:
 577         event = droid.eventWait().result
 578         if not event: continue
 579         print "got event in payto loop", event
 580         if event == 'OK': continue
 581         if not event.get("name"): continue
 582
 583         if event["name"] == "click":
 584             id = event["data"]["id"]
 585
 586             if id=="buttonPay":
 587
 588                 droid.fullQuery()
 589                 recipient = droid.fullQueryDetail("recipient").result.get('text')
 590                 label  = droid.fullQueryDetail("label").result.get('text')
 591                 amount = droid.fullQueryDetail('amount').result.get('text')
 592
 593                 if not is_valid(recipient):
 594                     modal_dialog('Error','Invalid Bitcoin address')
 595                     continue
 596
 597                 try:
 598                     amount = int( 100000000 * Decimal(amount) )
 599                 except:
 600                     modal_dialog('Error','Invalid amount')
 601                     continue
 602
 603                 result = pay_to(recipient, amount, wallet.fee, label)
 604                 if result:
 605                     out = 'main'
 606
 607             elif id=="buttonContacts":
 608                 addr = select_from_contacts()
 609                 droid.fullSetProperty("recipient","text",addr)
 610
 611             elif id=="buttonQR":
 612                 code = droid.scanBarcode()
 613                 r = code.result
 614                 if r:
 615                     data = r['extras']['SCAN_RESULT']
 616                     if data:
 617                         if re.match('^bitcoin:', data):
 618                             payto, amount, label, _, _, _, _ = util.parse_url(data)
 619                             droid.fullSetProperty("recipient", "text",payto)
 620                             droid.fullSetProperty("amount", "text", amount)
 621                             droid.fullSetProperty("label", "text", label)
 622                         else:
 623                             droid.fullSetProperty("recipient", "text", data)
 624
 625
 626         elif event["name"] in menu_commands:
 627             out = event["name"]
 628
 629         elif event["name"]=="key":
 630             if event["data"]["key"] == '4':
 631                 out = 'main'
 632
 633         #elif event["name"]=="screen":
 634         #    if event["data"]=="destroy":
 635         #        out = 'main'
 636
 637     return out
 638
 639
 640 receive_addr = ''
 641 contact_addr = ''
 642 recipient = ''
 643
 644 def receive_loop():
 645     out = None
 646     while out is None:
 647         event = droid.eventWait().result
 648         print "got event", event
 649         if event["name"]=="key":
 650             if event["data"]["key"] == '4':
 651                 out = 'main'
 652
 653         elif event["name"]=="clipboard":
 654             droid.setClipboard(receive_addr)
 655             modal_dialog('Address copied to clipboard',receive_addr)
 656
 657         elif event["name"]=="edit":
 658             edit_label(receive_addr)
 659
 660     return out
 661
 662 def contacts_loop():
 663     global recipient
 664     out = None
 665     while out is None:
 666         event = droid.eventWait().result
 667         print "got event", event
 668         if event["name"]=="key":
 669             if event["data"]["key"] == '4':
 670                 out = 'main'
 671
 672         elif event["name"]=="clipboard":
 673             droid.setClipboard(contact_addr)
 674             modal_dialog('Address copied to clipboard',contact_addr)
 675
 676         elif event["name"]=="edit":
 677             edit_label(contact_addr)
 678
 679         elif event["name"]=="paytocontact":
 680             recipient = contact_addr
 681             out = 'send'
 682
 683         elif event["name"]=="deletecontact":
 684             if modal_question('delete contact', contact_addr):
 685                 out = 'main'
 686
 687     return out
 688
 689
 690 def server_dialog(servers):
 691     droid.dialogCreateAlert("Public servers")
 692     droid.dialogSetItems( servers.keys() )
 693     droid.dialogSetPositiveButtonText('Private server')
 694     droid.dialogShow()
 695     response = droid.dialogGetResponse().result
 696     droid.dialogDismiss()
 697     if not response: return
 698
 699     if response.get('which') == 'positive':
 700         return modal_input('Private server', None)
 701
 702     i = response.get('item')
 703     if i is not None:
 704         response = servers.keys()[i]
 705         return response
 706
 707
 708 def show_seed():
 709     if wallet.use_encryption:
 710         password  = droid.dialogGetPassword('Seed').result
 711         if not password: return
 712     else:
 713         password = None
 714
 715     try:
 716         seed = wallet.decode_seed(password)
 717     except:
 718         modal_dialog('error','incorrect password')
 719         return
 720
 721     modal_dialog('Your seed is',seed)
 722     modal_dialog('Mnemonic code:', ' '.join(mnemonic_encode(seed)) )
 723
 724 def change_password_dialog():
 725     if wallet.use_encryption:
 726         password  = droid.dialogGetPassword('Your wallet is encrypted').result
 727         if password is None: return
 728     else:
 729         password = None
 730
 731     try:
 732         seed = wallet.decode_seed(password)
 733     except:
 734         modal_dialog('error','incorrect password')
 735         return
 736
 737     new_password  = droid.dialogGetPassword('Choose a password').result
 738     if new_password == None:
 739         return
 740
 741     if new_password != '':
 742         password2  = droid.dialogGetPassword('Confirm new password').result
 743         if new_password != password2:
 744             modal_dialog('error','passwords do not match')
 745             return
 746
 747     wallet.update_password(seed, password, new_password)
 748     if new_password:
 749         modal_dialog('Password updated','your wallet is encrypted')
 750     else:
 751         modal_dialog('No password','your wallet is not encrypted')
 752     return True
 753
 754
 755 def settings_loop():
 756
 757
 758     def set_listview():
 759         server, port, p = network.default_server.split(':')
 760         fee = str( Decimal( wallet.fee)/100000000 )
 761         is_encrypted = 'yes' if wallet.use_encryption else 'no'
 762         protocol = protocol_name(p)
 763         droid.fullShow(settings_layout)
 764         droid.fullSetList("myListView",['Server: ' + server, 'Protocol: '+ protocol, 'Port: '+port, 'Transaction fee: '+fee, 'Password: '+is_encrypted, 'Seed'])
 765
 766     set_listview()
 767
 768     out = None
 769     while out is None:
 770         event = droid.eventWait()
 771         event = event.result
 772         print "got event", event
 773         if event == 'OK': continue
 774         if not event: continue
 775
 776         servers = network.get_servers()
 777         name = event.get("name")
 778         if not name: continue
 779
 780         if name == "itemclick":
 781             pos = event["data"]["position"]
 782             host, port, protocol = network.default_server.split(':')
 783             network_changed = False
 784
 785             if pos == "0": #server
 786                 host = server_dialog(servers)
 787                 if host:
 788                     p = servers[host]
 789                     port = p[protocol]
 790                     network_changed = True
 791
 792             elif pos == "1": #protocol
 793                 if host in servers:
 794                     protocol = protocol_dialog(host, protocol, servers[host])
 795                     z = servers[host]
 796                     port = z[protocol]
 797                     network_changed = True
 798
 799             elif pos == "2": #port
 800                 a_port = modal_input('Port number', 'If you use a public server, this field is set automatically when you set the protocol', port, "number")
 801                 if a_port != port:
 802                     port = a_port
 803                     network_changed = True
 804
 805             elif pos == "3": #fee
 806                 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")
 807                 if fee:
 808                     try:
 809                         fee = int( 100000000 * Decimal(fee) )
 810                     except:
 811                         modal_dialog('error','invalid fee value')
 812                     wallet.set_fee(fee)
 813                     set_listview()
 814
 815             elif pos == "4":
 816                 if change_password_dialog():
 817                     set_listview()
 818
 819             elif pos == "5":
 820                 show_seed()
 821
 822             if network_changed:
 823                 proxy = None
 824                 auto_connect = False
 825                 try:
 826                     network.set_parameters(host, port, protocol, proxy, auto_connect)
 827                 except:
 828                     modal_dialog('error','invalid server')
 829                 set_listview()
 830
 831         elif name in menu_commands:
 832             out = event["name"]
 833
 834         elif name == 'cancel':
 835             out = 'main'
 836
 837         elif name == "key":
 838             if event["data"]["key"] == '4':
 839                 out = 'main'
 840
 841     return out
 842
 843 def add_menu(s):
 844     droid.clearOptionsMenu()
 845     if s == 'main':
 846         droid.addOptionsMenuItem("Send","send",None,"")
 847         droid.addOptionsMenuItem("Receive","receive",None,"")
 848         droid.addOptionsMenuItem("Contacts","contacts",None,"")
 849         droid.addOptionsMenuItem("Settings","settings",None,"")
 850     elif s == 'receive':
 851         droid.addOptionsMenuItem("Copy","clipboard",None,"")
 852         droid.addOptionsMenuItem("Label","edit",None,"")
 853     elif s == 'contacts':
 854         droid.addOptionsMenuItem("Copy","clipboard",None,"")
 855         droid.addOptionsMenuItem("Label","edit",None,"")
 856         droid.addOptionsMenuItem("Pay to","paytocontact",None,"")
 857         #droid.addOptionsMenuItem("Delete","deletecontact",None,"")
 858
 859
 860 def make_bitmap(addr):
 861     # fixme: this is highly inefficient
 862     droid.dialogCreateSpinnerProgress("please wait")
 863     droid.dialogShow()
 864     try:
 865         import pyqrnative, bmp
 866         qr = pyqrnative.QRCode(4, pyqrnative.QRErrorCorrectLevel.L)
 867         qr.addData(addr)
 868         qr.make()
 869         k = qr.getModuleCount()
 870         assert k == 33
 871         bmp.save_qrcode(qr,"/sdcard/sl4a/qrcode.bmp")
 872     finally:
 873         droid.dialogDismiss()
 874
 875
 876
 877
 878 droid = android.Android()
 879 menu_commands = ["send", "receive", "settings", "contacts", "main"]
 880 wallet = None
 881 network = None
 882
 883 class ElectrumGui:
 884
 885     def __init__(self, config, _network):
 886         global wallet, network
 887         network = _network
 888         network.register_callback('updated', update_callback)
 889         network.register_callback('connected', update_callback)
 890         network.register_callback('disconnected', update_callback)
 891         network.register_callback('disconnecting', update_callback)
 892
 893         storage = WalletStorage(config)
 894         if not storage.file_exists:
 895             action = self.restore_or_create()
 896             if not action: exit()
 897
 898             wallet = Wallet(storage)
 899             if action == 'create':
 900                 wallet.init_seed(None)
 901                 self.show_seed()
 902                 wallet.save_seed()
 903                 wallet.create_accounts()
 904                 wallet.synchronize()  # generate first addresses offline
 905
 906             elif action == 'restore':
 907                 seed = self.seed_dialog()
 908                 if not seed:
 909                     exit()
 910                 wallet.init_seed(str(seed))
 911                 wallet.save_seed()
 912             else:
 913                 exit()
 914
 915             wallet.start_threads(network)
 916
 917             if action == 'restore':
 918                 if not self.restore_wallet():
 919                     exit()
 920
 921             self.password_dialog(wallet)
 922
 923         else:
 924             wallet = Wallet(storage)
 925             wallet.start_threads(network)
 926
 927
 928     def main(self, url):
 929         s = 'main'
 930         while True:
 931             add_menu(s)
 932             if s == 'main':
 933                 droid.fullShow(main_layout())
 934                 s = main_loop()
 935
 936             elif s == 'send':
 937                 droid.fullShow(payto_layout)
 938                 s = payto_loop()
 939
 940             elif s == 'receive':
 941                 make_bitmap(receive_addr)
 942                 droid.fullShow(qr_layout(receive_addr))
 943                 s = receive_loop()
 944
 945             elif s == 'contacts':
 946                 make_bitmap(contact_addr)
 947                 droid.fullShow(qr_layout(contact_addr))
 948                 s = contacts_loop()
 949
 950             elif s == 'settings':
 951                 s = settings_loop()
 952
 953             else:
 954                 break
 955
 956         droid.makeToast("Bye!")
 957
 958
 959     def restore_or_create(self):
 960         droid.dialogCreateAlert("Wallet not found","Do you want to create a new wallet, or restore an existing one?")
 961         droid.dialogSetPositiveButtonText('Create')
 962         droid.dialogSetNeutralButtonText('Restore')
 963         droid.dialogSetNegativeButtonText('Cancel')
 964         droid.dialogShow()
 965         response = droid.dialogGetResponse().result
 966         droid.dialogDismiss()
 967         if not response: return
 968         if response.get('which') == 'negative':
 969             return
 970
 971         return 'restore' if response.get('which') == 'neutral' else 'create'
 972
 973
 974     def seed_dialog(self):
 975         if modal_question("Enter your seed","Input method",'QR Code', 'mnemonic'):
 976             code = droid.scanBarcode()
 977             r = code.result
 978             if r:
 979                 seed = r['extras']['SCAN_RESULT']
 980             else:
 981                 return
 982         else:
 983             m = modal_input('Mnemonic','please enter your code')
 984             try:
 985                 seed = mnemonic_decode(m.split(' '))
 986             except:
 987                 modal_dialog('error: could not decode this seed')
 988                 return
 989
 990         return str(seed)
 991
 992
 993     def network_dialog(self):
 994         return True
 995
 996     def verify_seed(self):
 997         wallet.save_seed()
 998         return True
 999
1000     def show_seed(self):
1001         modal_dialog('Your seed is:', wallet.seed)
1002         modal_dialog('Mnemonic code:', ' '.join(mnemonic_encode(wallet.seed)) )
1003
1004
1005     def password_dialog(self):
1006         change_password_dialog()
1007
1008
1009     def restore_wallet(self):
1010
1011         msg = "recovering wallet..."
1012         droid.dialogCreateSpinnerProgress("Electrum", msg)
1013         droid.dialogShow()
1014
1015         wallet.restore(lambda x: None)
1016
1017         droid.dialogDismiss()
1018         droid.vibrate()
1019
1020         if wallet.is_found():
1021             wallet.fill_addressbook()
1022             modal_dialog("recovery successful")
1023         else:
1024             if not modal_question("no transactions found for this seed","do you want to keep this wallet?"):
1025                 return False
1026
1027         return True
1028