Wrapper func to create and show a TxDialog

Add prompt_if_unsaved as explicit argument.
Tested with cosigner pool plugin.

gui/qt/main_window.py

@@ -46,6 +46,7 @@ from amountedit import AmountEdit, BTCAmountEdit, MyLineEdit
 from network_dialog import NetworkDialog
 from qrcodewidget import QRCodeWidget, QRDialog
 from qrtextedit import ScanQRTextEdit, ShowQRTextEdit
+from transaction_dialog import show_transaction
 
 from decimal import Decimal
 
@@ -570,9 +571,7 @@ class ElectrumWindow(QMainWindow):
 
     def show_transaction(self, tx, tx_desc = None):
         '''tx_desc is set only for txs created in the Send tab'''
-        import transaction_dialog
-        d = transaction_dialog.TxDialog(tx, self, tx_desc)
-        d.show()
+        show_transaction(tx, self, tx_desc)
 
     def update_history_tab(self):
         domain = self.wallet.get_account_addresses(self.current_account)

gui/qt/transaction_dialog.py

@@ -31,10 +31,13 @@ from electrum.plugins import run_hook
 
 from util import *
 
+def show_transaction(tx, parent, desc=None, prompt_if_unsaved=False):
+    d = TxDialog(tx, parent, desc, prompt_if_unsaved)
+    d.show()
 
 class TxDialog(QWidget):
 
-    def __init__(self, tx, parent, desc=None):
+    def __init__(self, tx, parent, desc, prompt_if_unsaved):
         '''Transactions in the wallet will show their description.
         Pass desc to give a description for txs not yet in the wallet.
         '''
@@ -42,7 +45,7 @@ class TxDialog(QWidget):
         tx_dict = tx.as_dict()
         self.parent = parent
         self.wallet = parent.wallet
-        self.saved = True
+        self.saved = not prompt_if_unsaved
         self.desc = desc
 
         QWidget.__init__(self)

plugins/cosigner_pool.py

@@ -29,7 +29,7 @@ from electrum import transaction
 from electrum.plugins import BasePlugin, hook
 from electrum.i18n import _
 
-from electrum_gui.qt import transaction_dialog
+from electrum_gui.qt.transaction_dialog import show_transaction
 
 import sys
 import traceback
@@ -180,6 +180,4 @@ class Plugin(BasePlugin):
 
         self.listener.clear()
         tx = transaction.Transaction(message)
-        d = transaction_dialog.TxDialog(tx, self.win)
-        d.saved = False
-        d.show()
+        show_transaction(tx, self.win, prompt_if_unsaved=True)