simplified dialog for new file name

gui/qt/main_window.py

@@ -75,7 +75,7 @@ PR_ERROR   = 4     # could not parse
 from electrum import ELECTRUM_VERSION
 import re
 
-from util import *
+from util import MyTreeWidget, HelpButton, EnterButton, line_dialog, text_dialog, ok_cancel_buttons, close_button
 
 
 def format_status(x):
@@ -286,12 +286,20 @@ class ElectrumWindow(QMainWindow):
         import installwizard
 
         wallet_folder = os.path.dirname(self.wallet.storage.path)
-        filename = unicode( QFileDialog.getSaveFileName(self, _('Enter a new file name'), wallet_folder) )
+        i = 1
+        while True:
+            filename = "wallet_%d"%i
+            if filename in os.listdir(wallet_folder):
+                i += 1
+            else:
+                break
+
+        filename = line_dialog(self, _('New Wallet'), _('Enter file name') + ':', _('OK'), filename)
         if not filename:
             return
-        filename = os.path.join(wallet_folder, filename)
 
-        storage = WalletStorage({'wallet_path': filename})
+        full_path = os.path.join(wallet_folder, filename)
+        storage = WalletStorage({'wallet_path': full_path})
         if storage.file_exists:
             QMessageBox.critical(None, "Error", _("File exists"))
             return

gui/qt/util.py

@@ -110,6 +110,22 @@ def ok_cancel_buttons(dialog, ok_label=_("OK") ):
     hbox, b = ok_cancel_buttons2(dialog, ok_label)
     return hbox
 
+def line_dialog(parent, title, label, ok_label, default=None):
+    dialog = QDialog(parent)
+    dialog.setMinimumWidth(500)
+    dialog.setWindowTitle(title)
+    dialog.setModal(1)
+    l = QVBoxLayout()
+    dialog.setLayout(l)
+    l.addWidget(QLabel(label))
+    txt = QLineEdit()
+    if default:
+        txt.setText(default)
+    l.addWidget(txt)
+    l.addLayout(ok_cancel_buttons(dialog, ok_label))
+    if dialog.exec_():
+        return unicode(txt.text())
+
 def text_dialog(parent, title, label, ok_label, default=None):
     from qrtextedit import QRTextEdit
     dialog = QDialog(parent)