From b5acdab3e98f22ae212dd9aa091f00d3132c186f Mon Sep 17 00:00:00 2001
From: ThomasV <thomasv@gitorious>
Date: Thu, 26 Jun 2014 18:55:22 +0200
Subject: [PATCH] allow address creation beyond gap limit in GUI. fixes #512

---
 gui/qt/main_window.py | 21 +++++++++++++++++++--
 lib/wallet.py         | 14 +++++++++++++-
 2 files changed, 32 insertions(+), 3 deletions(-)

diff --git a/gui/qt/main_window.py b/gui/qt/main_window.py
index cc61f4237..4dec40e54 100644
--- a/gui/qt/main_window.py
+++ b/gui/qt/main_window.py
@@ -40,6 +40,7 @@ from electrum import Transaction
 from electrum import mnemonic
 from electrum import util, bitcoin, commands, Interface, Wallet
 from electrum import SimpleConfig, Wallet, WalletStorage
+from electrum import Imported_Wallet
 
 from amountedit import AmountEdit, BTCAmountEdit, MyLineEdit
 from network_dialog import NetworkDialog
@@ -681,7 +682,7 @@ class ElectrumWindow(QMainWindow):
         self.save_request_button.clicked.connect(self.save_payment_request)
         grid.addWidget(self.save_request_button, 3, 1)
         clear_button = QPushButton(_('New'))
-        clear_button.clicked.connect(self.clear_receive_tab)
+        clear_button.clicked.connect(self.new_receive_address)
         grid.addWidget(clear_button, 3, 2)
         grid.setRowStretch(4, 1)
 
@@ -739,6 +740,22 @@ class ElectrumWindow(QMainWindow):
         self.wallet.storage.put('receive_requests', self.receive_requests)
         self.update_receive_tab()
 
+    def new_receive_address(self):
+        domain = self.wallet.get_account_addresses(self.current_account, include_change=False)
+        for addr in domain:
+            if not self.wallet.address_is_old(addr) and addr not in self.receive_requests.keys():
+                break
+        else:
+            if isinstance(self.wallet, Imported_Wallet):
+                self.show_message(_('No more addresses in your wallet.'))
+                return
+            if not self.question(_("Warning: The next address will not be recovered automatically if you restore your wallet from seed; you may need to add it manually.\n\nThis occurs because you have too many unused addresses in your wallet. To avoid this situation, use the existing addresses first.\n\nCreate anyway?")):
+                return
+            addr = self.wallet.create_new_address(self.current_account, False)
+        self.receive_address_e.setText(addr)
+        self.receive_message_e.setText('')
+        self.receive_amount_e.setAmount(None)
+
     def clear_receive_tab(self):
         self.receive_requests = self.wallet.storage.get('receive_requests',{}) 
         domain = self.wallet.get_account_addresses(self.current_account, include_change=False)
@@ -746,7 +763,7 @@ class ElectrumWindow(QMainWindow):
             if not self.wallet.address_is_old(addr) and addr not in self.receive_requests.keys():
                 break
         else:
-            addr = ""
+            addr = ''
         self.receive_address_e.setText(addr)
         self.receive_message_e.setText('')
         self.receive_amount_e.setAmount(None)
diff --git a/lib/wallet.py b/lib/wallet.py
index 53f0d4103..fb1e31b70 100644
--- a/lib/wallet.py
+++ b/lib/wallet.py
@@ -547,7 +547,7 @@ class Abstract_Wallet:
 
     def get_account_addresses(self, a, include_change=True):
         if a is None:
-            o = self.addresses(True)
+            o = self.addresses(include_change)
         elif a in self.accounts:
             ac = self.accounts[a]
             o = ac.get_addresses(0)
@@ -1140,10 +1140,13 @@ class Deterministic_Wallet(Abstract_Wallet):
         return nmax + 1
 
     def create_new_address(self, account, for_change):
+        if account is None:
+            account = self.default_account()
         address = account.create_new_address(for_change)
         self.history[address] = []
         self.synchronizer.add(address)
         self.save_accounts()
+        return address
 
     def synchronize_sequence(self, account, for_change):
         limit = self.gap_limit_for_change if for_change else self.gap_limit
@@ -1257,6 +1260,9 @@ class NewWallet(Deterministic_Wallet):
     def __init__(self, storage):
         Deterministic_Wallet.__init__(self, storage)
 
+    def default_account(self):
+        return self.accounts["m/0'"]
+
     def is_watching_only(self):
         return self.master_private_keys is {}
 
@@ -1401,6 +1407,9 @@ class Wallet_2of2(NewWallet):
         NewWallet.__init__(self, storage)
         self.storage.put('wallet_type', '2of2', True)
 
+    def default_account(self):
+        return self.accounts['m/']
+
     def can_create_accounts(self):
         return False
 
@@ -1462,6 +1471,9 @@ class Wallet_2of3(Wallet_2of2):
 
 class OldWallet(Deterministic_Wallet):
 
+    def default_account(self):
+        return self.accounts[0]
+
     def make_seed(self):
         import mnemonic
         seed = random_seed(128)