From a742552c686c49e4c22556ebe3624bccb0870613 Mon Sep 17 00:00:00 2001
From: SomberNight <somber.night@protonmail.com>
Date: Wed, 1 Aug 2018 18:26:57 +0200
Subject: [PATCH] qt send tab: hide fee fields when paying with lightning

---
 electrum/gui/qt/main_window.py | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/electrum/gui/qt/main_window.py b/electrum/gui/qt/main_window.py
index 0e818007c..6fa94b7bd 100644
--- a/electrum/gui/qt/main_window.py
+++ b/electrum/gui/qt/main_window.py
@@ -1330,11 +1330,13 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger):
         hbox.addWidget(self.feerounding_icon, Qt.AlignLeft)
         hbox.addStretch(1)
 
-        vbox_feecontrol = QVBoxLayout()
+        self.feecontrol_fields = QWidget()
+        vbox_feecontrol = QVBoxLayout(self.feecontrol_fields)
+        vbox_feecontrol.setContentsMargins(0, 0, 0, 0)
         vbox_feecontrol.addWidget(self.fee_adv_controls)
         vbox_feecontrol.addWidget(self.fee_slider)
 
-        grid.addLayout(vbox_feecontrol, 5, 1, 1, -1)
+        grid.addWidget(self.feecontrol_fields, 5, 1, 1, -1)
 
         if not self.config.get('show_fee', False):
             self.fee_adv_controls.setVisible(False)
@@ -1438,6 +1440,8 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger):
         '''Recalculate the fee.  If the fee was manually input, retain it, but
         still build the TX to see if there are enough funds.
         '''
+        if self.payto_e.is_lightning:
+            return
         freeze_fee = self.is_send_fee_frozen()
         freeze_feerate = self.is_send_feerate_frozen()
         amount = '!' if self.max_button.isChecked() else self.amount_e.get_amount()
@@ -1900,6 +1904,11 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger):
             self.amount_e.setAmount(lnaddr.amount * COIN)
         #self.amount_e.textEdited.emit("")
         self.payto_e.is_lightning = True
+        self.show_send_tab_onchain_fees(False)
+
+    def show_send_tab_onchain_fees(self, b: bool):
+        self.feecontrol_fields.setVisible(b)
+        self.fee_e_label.setVisible(b)
 
     def pay_to_URI(self, URI):
         if not URI:
@@ -1938,6 +1947,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger):
         self.payment_request = None
         self.payto_e.is_pr = False
         self.payto_e.is_lightning = False
+        self.show_send_tab_onchain_fees(True)
         for e in [self.payto_e, self.message_e, self.amount_e, self.fiat_send_e,
                   self.fee_e, self.feerate_e]:
             e.setText('')