Qt: let user edit tx label from tx_dialog

This allows users to edit labels from the utxo_dialog,
without having to search for the transaction in history.

Also, remove block hash from tx dialog: not very useful, and
available through block explorers. (the situation where this
could be useful is case of a chain fork, but in that case the
tx might be mined in both branches of the fork, and we would
want to know that).

electrum/gui/qt/main_window.py

@@ -164,6 +164,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger, QtEventListener):
     computing_privkeys_signal = pyqtSignal()
     show_privkeys_signal = pyqtSignal()
     show_error_signal = pyqtSignal(str)
+    labels_changed_signal = pyqtSignal()
 
     def __init__(self, gui_object: 'ElectrumGui', wallet: Abstract_Wallet):
         QMainWindow.__init__(self)

electrum/gui/qt/transaction_dialog.py

@@ -419,8 +419,20 @@ class TxDialog(QDialog, MessageBoxMixin):
         vbox.addLayout(toolbar)
 
         vbox.addWidget(QLabel(_("Transaction ID:")))
-        self.tx_hash_e = ShowQRLineEdit('', self.config, title='Transaction ID')
+        self.tx_hash_e = ShowQRLineEdit('', self.config, title=_('Transaction ID'))
         vbox.addWidget(self.tx_hash_e)
+        self.tx_desc_label = QLabel(_("Description:"))
+        vbox.addWidget(self.tx_desc_label)
+        self.tx_desc = ButtonsLineEdit('')
+        def on_edited():
+            text = self.tx_desc.text()
+            if self.wallet.set_label(txid, text):
+                self.main_window.history_list.update()
+                self.main_window.utxo_list.update()
+                self.main_window.labels_changed_signal.emit()
+        self.tx_desc.editingFinished.connect(on_edited)
+        self.tx_desc.addCopyButton()
+        vbox.addWidget(self.tx_desc)
 
         self.add_tx_stats(vbox)
 
@@ -733,11 +745,13 @@ class TxDialog(QDialog, MessageBoxMixin):
             # note: when not finalized, RBF and locktime changes do not trigger
             #       a make_tx, so the txid is unreliable, hence:
             self.tx_hash_e.setText(_('Unknown'))
-        if not desc:
+        if not self.wallet.adb.get_transaction(txid):
             self.tx_desc.hide()
+            self.tx_desc_label.hide()
         else:
-            self.tx_desc.setText(_("Description") + ': ' + desc)
+            self.tx_desc.setText(desc)
             self.tx_desc.show()
+            self.tx_desc_label.show()
         self.status_label.setText(_('Status:') + ' ' + tx_details.status)
 
         if tx_mined_status.timestamp:
@@ -761,12 +775,9 @@ class TxDialog(QDialog, MessageBoxMixin):
         self.rbf_label.setText(_('Replace by fee') + f": {not self.tx.is_final()}")
 
         if tx_mined_status.header_hash:
-            self.block_hash_label.setText(_("Included in block: {}")
-                                          .format(tx_mined_status.header_hash))
             self.block_height_label.setText(_("At block height: {}")
                                             .format(tx_mined_status.height))
         else:
-            self.block_hash_label.hide()
             self.block_height_label.hide()
         if amount is None and ln_amount is None:
             amount_str = _("Transaction unrelated to your wallet")
@@ -860,8 +871,6 @@ class TxDialog(QDialog, MessageBoxMixin):
 
         # left column
         vbox_left = QVBoxLayout()
-        self.tx_desc = TxDetailLabel(word_wrap=True)
-        vbox_left.addWidget(self.tx_desc)
         self.status_label = TxDetailLabel()
         vbox_left.addWidget(self.status_label)
         self.date_label = TxDetailLabel()
@@ -911,10 +920,6 @@ class TxDialog(QDialog, MessageBoxMixin):
 
         vbox.addWidget(hbox_stats_w)
 
-        # below columns
-        self.block_hash_label = TxDetailLabel(word_wrap=True)
-        vbox.addWidget(self.block_hash_label)
-
         # set visibility after parenting can be determined by Qt
         self.rbf_label.setVisible(True)
         self.locktime_final_label.setVisible(True)

electrum/gui/qt/utxo_dialog.py

@@ -41,8 +41,6 @@ if TYPE_CHECKING:
     from electrum.transaction import PartialTxInput
     from .main_window import ElectrumWindow
 
-# todo:
-#  - edit label in tx detail window
 
 
 class UTXODialog(WindowModalDialog):
@@ -54,11 +52,6 @@ class UTXODialog(WindowModalDialog):
         self.wallet = window.wallet
         self.utxo = utxo
 
-        txid = self.utxo.prevout.txid.hex()
-        parents = self.wallet.get_tx_parents(txid)
-        num_parents = len(parents)
-        parents_copy = copy.deepcopy(parents)
-
         self.parents_list = QTextBrowserWithDefaultSize(800, 400)
         self.parents_list.setOpenLinks(False)  # disable automatic link opening
         self.parents_list.anchorClicked.connect(self.open_tx)  # send links to our handler
@@ -70,6 +63,29 @@ class UTXODialog(WindowModalDialog):
         self.txo_color_uncle = TxOutputColoring(
             legend=_("Address reuse"), color=ColorScheme.RED, tooltip=_("Address reuse"))
 
+        vbox = QVBoxLayout()
+        vbox.addWidget(QLabel(_("Output point") + ": " + str(self.utxo.short_id)))
+        vbox.addWidget(QLabel(_("Amount") + ": " + self.main_window.format_amount_and_units(self.utxo.value_sats())))
+        self.stats_label = WWLabel()
+        vbox.addWidget(self.stats_label)
+        vbox.addWidget(self.parents_list)
+        legend_hbox = QHBoxLayout()
+        legend_hbox.setContentsMargins(0, 0, 0, 0)
+        legend_hbox.addStretch(2)
+        legend_hbox.addWidget(self.txo_color_parent.legend_label)
+        legend_hbox.addWidget(self.txo_color_uncle.legend_label)
+        vbox.addLayout(legend_hbox)
+        vbox.addLayout(Buttons(CloseButton(self)))
+        self.setLayout(vbox)
+        self.update()
+        self.main_window.labels_changed_signal.connect(self.update)
+
+    def update(self):
+
+        txid = self.utxo.prevout.txid.hex()
+        parents = self.wallet.get_tx_parents(txid)
+        num_parents = len(parents)
+        parents_copy = copy.deepcopy(parents)
         cursor = self.parents_list.textCursor()
         ext = QTextCharFormat()
 
@@ -84,6 +100,10 @@ class UTXODialog(WindowModalDialog):
             ASCII_PIPE   = '│'
             ASCII_SPACE  = ' '
 
+        # set cursor to top
+        cursor.setPosition(0)
+        self.parents_list.clear()
+        self.parents_list.setTextCursor(cursor)
         self.num_reuse = 0
         def print_ascii_tree(_txid, prefix, is_last, is_uncle):
             if _txid not in parents:
@@ -118,27 +138,12 @@ class UTXODialog(WindowModalDialog):
 
         # recursively build the tree
         print_ascii_tree(txid, '', False, False)
-        vbox = QVBoxLayout()
-        vbox.addWidget(QLabel(_("Output point") + ": " + str(self.utxo.short_id)))
-        vbox.addWidget(QLabel(_("Amount") + ": " + self.main_window.format_amount_and_units(self.utxo.value_sats())))
         msg = _("This UTXO has {} parent transactions in your wallet.").format(num_parents)
         if self.num_reuse:
             msg += '\n' + _('This does not include transactions that are downstream of address reuse.')
-        vbox.addWidget(WWLabel(msg))
-        vbox.addWidget(self.parents_list)
-        legend_hbox = QHBoxLayout()
-        legend_hbox.setContentsMargins(0, 0, 0, 0)
-        legend_hbox.addStretch(2)
-        legend_hbox.addWidget(self.txo_color_parent.legend_label)
-        legend_hbox.addWidget(self.txo_color_uncle.legend_label)
-        vbox.addLayout(legend_hbox)
+        self.stats_label.setText(msg)
         self.txo_color_parent.legend_label.setVisible(True)
         self.txo_color_uncle.legend_label.setVisible(bool(self.num_reuse))
-        vbox.addLayout(Buttons(CloseButton(self)))
-        self.setLayout(vbox)
-        # set cursor to top
-        cursor.setPosition(0)
-        self.parents_list.setTextCursor(cursor)
 
     def open_tx(self, txid):
         if isinstance(txid, QUrl):