Merge #18027: "PSBT Operations" dialog

931dd4760855e036c176a23ec2de367c460e4243 Make lint-spelling.py happy (Glenn Willen)
11a0ffb29d1b4dcc55c8826873f340ab4196af21 [gui] Load PSBT from clipboard (Glenn Willen)
a6cb0b0c29d327d01aebb98b0504f317eb19c3dc [gui] PSBT Operations Dialog (sign & broadcast) (Glenn Willen)
5dd0c03ffa3aeaa69d8a3a716f902f450d5eaaec FillPSBT: report number of inputs signed (or would sign) (Glenn Willen)
9e7b23b73387600d175aff8bd5e6624dd51f86e7 Improve TransactionErrorString messages. (Glenn Willen)

Pull request description:

  Add a "PSBT Operations" dialog, reached from the "Load PSBT..." menu item, giving options to sign or broadcast the loaded PSBT as appropriate, as well as copying the result to the clipboard or saving it to a file.

  This is based on Sjors' #17509, and depends on that PR going in first. (It effectively replaces the small "load PSBT" dialog from that PR with a more feature-rich one.)

  Some notes:
  * The way I display status information is maybe unusual (a status bar, rather than messageboxes.) I think it's helpful to have the information in it be persistent rather than transitory. But if people dislike it, I would probably move the "current state of the transaction" info to the top line of the main label, and the "what action just happened, and did it succeed" info into a messagebox.
  * I don't really know much about the translation/localization stuff. I put tr() in all the places it seemed like it ought to go. I did not attempt to translate the result of TransactionErrorString (which is shared by GUI and non-GUI code); I don't know if that's correct, but it matches the "error messages in logs should be googleable in English" heuristic. I don't know whether there are things I should be doing to reduce translator effort (like minimizing the total number of distinct message strings I use, or something.)
  * I don't really know how (if?) automated testing is applied to GUI code. I can make a list of PSBTs exercising all the codepaths for manual testing, if that's the right approach. Input appreciated.

ACKs for top commit:
  instagibbs:
    tested ACK https://github.com/bitcoin/bitcoin/pull/18027/commits/931dd4760855e036c176a23ec2de367c460e4243
  Sjors:
    re-tACK 931dd4760855e036c176a23ec2de367c460e4243
  jb55:
    ACK 931dd4760855e036c176a23ec2de367c460e4243
  achow101:
    ACK 931dd4760855e036c176a23ec2de367c460e4243

Tree-SHA512: ade52471a2242f839a8bd6a1fd231443cc4b43bb9c1de3fb5ace7c5eb59eca99b1f2e9f17dfdb4b08d84d91f5fd65677db1433dd03eef51c7774963ef4e2e74f

11 files changed, 516 insertions, 74 deletions

diff --git a/src/qt/bitcoingui.cpp b/src/qt/bitcoingui.cpp
index 1092cdd754..b4182e8524 100644
--- a/src/qt/bitcoingui.cpp
+++ b/src/qt/bitcoingui.cpp
@@ -321,8 +321,10 @@ void BitcoinGUI::createActions()
     signMessageAction->setStatusTip(tr("Sign messages with your Bitcoin addresses to prove you own them"));
     verifyMessageAction = new QAction(tr("&Verify message..."), this);
     verifyMessageAction->setStatusTip(tr("Verify messages to ensure they were signed with specified Bitcoin addresses"));
-    m_load_psbt_action = new QAction(tr("Load PSBT..."), this);
+    m_load_psbt_action = new QAction(tr("&Load PSBT from file..."), this);
     m_load_psbt_action->setStatusTip(tr("Load Partially Signed Bitcoin Transaction"));
+    m_load_psbt_clipboard_action = new QAction(tr("Load PSBT from clipboard..."), this);
+    m_load_psbt_clipboard_action->setStatusTip(tr("Load Partially Signed Bitcoin Transaction from clipboard"));
 
     openRPCConsoleAction = new QAction(tr("Node window"), this);
     openRPCConsoleAction->setStatusTip(tr("Open node debugging and diagnostic console"));
@@ -381,6 +383,7 @@ void BitcoinGUI::createActions()
         connect(signMessageAction, &QAction::triggered, [this]{ showNormalIfMinimized(); });
         connect(signMessageAction, &QAction::triggered, [this]{ gotoSignMessageTab(); });
         connect(m_load_psbt_action, &QAction::triggered, [this]{ gotoLoadPSBT(); });
+        connect(m_load_psbt_clipboard_action, &QAction::triggered, [this]{ gotoLoadPSBT(true); });
         connect(verifyMessageAction, &QAction::triggered, [this]{ showNormalIfMinimized(); });
         connect(verifyMessageAction, &QAction::triggered, [this]{ gotoVerifyMessageTab(); });
         connect(usedSendingAddressesAction, &QAction::triggered, walletFrame, &WalletFrame::usedSendingAddresses);
@@ -459,6 +462,7 @@ void BitcoinGUI::createMenuBar()
         file->addAction(signMessageAction);
         file->addAction(verifyMessageAction);
         file->addAction(m_load_psbt_action);
+        file->addAction(m_load_psbt_clipboard_action);
         file->addSeparator();
     }
     file->addAction(quitAction);
@@ -878,9 +882,9 @@ void BitcoinGUI::gotoVerifyMessageTab(QString addr)
 {
     if (walletFrame) walletFrame->gotoVerifyMessageTab(addr);
 }
-void BitcoinGUI::gotoLoadPSBT()
+void BitcoinGUI::gotoLoadPSBT(bool from_clipboard)
 {
-    if (walletFrame) walletFrame->gotoLoadPSBT();
+    if (walletFrame) walletFrame->gotoLoadPSBT(from_clipboard);
 }
 #endif // ENABLE_WALLET
 
diff --git a/src/qt/bitcoingui.h b/src/qt/bitcoingui.h
index b009e279b6..697e83e772 100644
--- a/src/qt/bitcoingui.h
+++ b/src/qt/bitcoingui.h
@@ -139,6 +139,7 @@ private:
     QAction* signMessageAction = nullptr;
     QAction* verifyMessageAction = nullptr;
     QAction* m_load_psbt_action = nullptr;
+    QAction* m_load_psbt_clipboard_action = nullptr;
     QAction* aboutAction = nullptr;
     QAction* receiveCoinsAction = nullptr;
     QAction* receiveCoinsMenuAction = nullptr;
@@ -278,8 +279,8 @@ public Q_SLOTS:
     void gotoSignMessageTab(QString addr = "");
     /** Show Sign/Verify Message dialog and switch to verify message tab */
     void gotoVerifyMessageTab(QString addr = "");
-    /** Show load Partially Signed Bitcoin Transaction dialog */
-    void gotoLoadPSBT();
+    /** Load Partially Signed Bitcoin Transaction from file or clipboard */
+    void gotoLoadPSBT(bool from_clipboard = false);
 
     /** Show open dialog */
     void openClicked();
diff --git a/src/qt/forms/psbtoperationsdialog.ui b/src/qt/forms/psbtoperationsdialog.ui
new file mode 100644
index 0000000000..c2e2f5035b
--- /dev/null
+++ b/src/qt/forms/psbtoperationsdialog.ui
@@ -0,0 +1,148 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>PSBTOperationsDialog</class>
+ <widget class="QDialog" name="PSBTOperationsDialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>585</width>
+    <height>327</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Dialog</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <property name="spacing">
+    <number>12</number>
+   </property>
+   <property name="sizeConstraint">
+    <enum>QLayout::SetDefaultConstraint</enum>
+   </property>
+   <property name="bottomMargin">
+    <number>12</number>
+   </property>
+   <item>
+    <layout class="QVBoxLayout" name="mainDialogLayout">
+     <property name="spacing">
+      <number>5</number>
+     </property>
+     <property name="topMargin">
+      <number>0</number>
+     </property>
+     <property name="bottomMargin">
+      <number>0</number>
+     </property>
+     <item>
+      <widget class="QLabel" name="statusBar">
+       <property name="font">
+        <font>
+         <weight>75</weight>
+         <bold>true</bold>
+        </font>
+       </property>
+       <property name="autoFillBackground">
+        <bool>false</bool>
+       </property>
+       <property name="styleSheet">
+        <string notr="true"/>
+       </property>
+       <property name="text">
+        <string/>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QTextEdit" name="transactionDescription">
+       <property name="undoRedoEnabled">
+        <bool>false</bool>
+       </property>
+       <property name="readOnly">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <layout class="QHBoxLayout" name="buttonRowLayout">
+       <property name="spacing">
+        <number>5</number>
+       </property>
+       <item>
+        <widget class="QPushButton" name="signTransactionButton">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Minimum" vsizetype="Fixed">
+           <horstretch>0</horstretch>
+           <verstretch>0</verstretch>
+          </sizepolicy>
+         </property>
+         <property name="font">
+          <font>
+           <weight>50</weight>
+           <bold>false</bold>
+          </font>
+         </property>
+         <property name="text">
+          <string>Sign Tx</string>
+         </property>
+         <property name="autoDefault">
+          <bool>true</bool>
+         </property>
+         <property name="default">
+          <bool>false</bool>
+         </property>
+         <property name="flat">
+          <bool>false</bool>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QPushButton" name="broadcastTransactionButton">
+         <property name="text">
+          <string>Broadcast Tx</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <spacer name="horizontalSpacer">
+         <property name="orientation">
+          <enum>Qt::Horizontal</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>40</width>
+           <height>20</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
+       <item>
+        <widget class="QPushButton" name="copyToClipboardButton">
+         <property name="text">
+          <string>Copy to Clipboard</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QPushButton" name="saveButton">
+         <property name="text">
+          <string>Save...</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QPushButton" name="closeButton">
+         <property name="text">
+          <string>Close</string>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>
diff --git a/src/qt/psbtoperationsdialog.cpp b/src/qt/psbtoperationsdialog.cpp
new file mode 100644
index 0000000000..58167d4bb4
--- /dev/null
+++ b/src/qt/psbtoperationsdialog.cpp
@@ -0,0 +1,268 @@
+// Copyright (c) 2011-2020 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <qt/psbtoperationsdialog.h>
+
+#include <core_io.h>
+#include <interfaces/node.h>
+#include <key_io.h>
+#include <node/psbt.h>
+#include <policy/policy.h>
+#include <qt/bitcoinunits.h>
+#include <qt/forms/ui_psbtoperationsdialog.h>
+#include <qt/guiutil.h>
+#include <qt/optionsmodel.h>
+#include <util/strencodings.h>
+
+#include <iostream>
+
+
+PSBTOperationsDialog::PSBTOperationsDialog(
+    QWidget* parent, WalletModel* wallet_model, ClientModel* client_model) : QDialog(parent),
+                                                                             m_ui(new Ui::PSBTOperationsDialog),
+                                                                             m_wallet_model(wallet_model),
+                                                                             m_client_model(client_model)
+{
+    m_ui->setupUi(this);
+    setWindowTitle("PSBT Operations");
+
+    connect(m_ui->signTransactionButton, &QPushButton::clicked, this, &PSBTOperationsDialog::signTransaction);
+    connect(m_ui->broadcastTransactionButton, &QPushButton::clicked, this, &PSBTOperationsDialog::broadcastTransaction);
+    connect(m_ui->copyToClipboardButton, &QPushButton::clicked, this, &PSBTOperationsDialog::copyToClipboard);
+    connect(m_ui->saveButton, &QPushButton::clicked, this, &PSBTOperationsDialog::saveTransaction);
+
+    connect(m_ui->closeButton, &QPushButton::clicked, this, &PSBTOperationsDialog::close);
+
+    m_ui->signTransactionButton->setEnabled(false);
+    m_ui->broadcastTransactionButton->setEnabled(false);
+}
+
+PSBTOperationsDialog::~PSBTOperationsDialog()
+{
+    delete m_ui;
+}
+
+void PSBTOperationsDialog::openWithPSBT(PartiallySignedTransaction psbtx)
+{
+    m_transaction_data = psbtx;
+
+    bool complete;
+    size_t n_could_sign;
+    FinalizePSBT(psbtx);  // Make sure all existing signatures are fully combined before checking for completeness.
+    TransactionError err = m_wallet_model->wallet().fillPSBT(SIGHASH_ALL, false /* sign */, true /* bip32derivs */,  m_transaction_data, complete, &n_could_sign);
+    if (err != TransactionError::OK) {
+        showStatus(tr("Failed to load transaction: %1")
+            .arg(QString::fromStdString(TransactionErrorString(err).translated)), StatusLevel::ERR);
+        return;
+    }
+
+    m_ui->broadcastTransactionButton->setEnabled(complete);
+    m_ui->signTransactionButton->setEnabled(!complete && !m_wallet_model->wallet().privateKeysDisabled() && n_could_sign > 0);
+
+    updateTransactionDisplay();
+}
+
+void PSBTOperationsDialog::signTransaction()
+{
+    bool complete;
+    size_t n_signed;
+    TransactionError err = m_wallet_model->wallet().fillPSBT(SIGHASH_ALL, true /* sign */, true /* bip32derivs */, m_transaction_data, complete, &n_signed);
+
+    if (err != TransactionError::OK) {
+        showStatus(tr("Failed to sign transaction: %1")
+            .arg(QString::fromStdString(TransactionErrorString(err).translated)), StatusLevel::ERR);
+        return;
+    }
+
+    updateTransactionDisplay();
+
+    if (!complete && n_signed < 1) {
+        showStatus(tr("Could not sign any more inputs."), StatusLevel::WARN);
+    } else if (!complete) {
+        showStatus(tr("Signed %1 inputs, but more signatures are still required.").arg(n_signed),
+            StatusLevel::INFO);
+    } else {
+        showStatus(tr("Signed transaction successfully. Transaction is ready to broadcast."),
+            StatusLevel::INFO);
+        m_ui->broadcastTransactionButton->setEnabled(true);
+    }
+}
+
+void PSBTOperationsDialog::broadcastTransaction()
+{
+    CMutableTransaction mtx;
+    if (!FinalizeAndExtractPSBT(m_transaction_data, mtx)) {
+        // This is never expected to fail unless we were given a malformed PSBT
+        // (e.g. with an invalid signature.)
+        showStatus(tr("Unknown error processing transaction."), StatusLevel::ERR);
+        return;
+    }
+
+    CTransactionRef tx = MakeTransactionRef(mtx);
+    std::string err_string;
+    TransactionError error = BroadcastTransaction(
+        *m_client_model->node().context(), tx, err_string, DEFAULT_MAX_RAW_TX_FEE_RATE.GetFeePerK(), /* relay */ true, /* await_callback */ false);
+
+    if (error == TransactionError::OK) {
+        showStatus(tr("Transaction broadcast successfully! Transaction ID: %1")
+            .arg(QString::fromStdString(tx->GetHash().GetHex())), StatusLevel::INFO);
+    } else {
+        showStatus(tr("Transaction broadcast failed: %1")
+            .arg(QString::fromStdString(TransactionErrorString(error).translated)), StatusLevel::ERR);
+    }
+}
+
+void PSBTOperationsDialog::copyToClipboard() {
+    CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
+    ssTx << m_transaction_data;
+    GUIUtil::setClipboard(EncodeBase64(ssTx.str()).c_str());
+    showStatus(tr("PSBT copied to clipboard."), StatusLevel::INFO);
+}
+
+void PSBTOperationsDialog::saveTransaction() {
+    CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
+    ssTx << m_transaction_data;
+
+    QString selected_filter;
+    QString filename_suggestion = "";
+    bool first = true;
+    for (const CTxOut& out : m_transaction_data.tx->vout) {
+        if (!first) {
+            filename_suggestion.append("-");
+        }
+        CTxDestination address;
+        ExtractDestination(out.scriptPubKey, address);
+        QString amount = BitcoinUnits::format(m_wallet_model->getOptionsModel()->getDisplayUnit(), out.nValue);
+        QString address_str = QString::fromStdString(EncodeDestination(address));
+        filename_suggestion.append(address_str + "-" + amount);
+        first = false;
+    }
+    filename_suggestion.append(".psbt");
+    QString filename = GUIUtil::getSaveFileName(this,
+        tr("Save Transaction Data"), filename_suggestion,
+        tr("Partially Signed Transaction (Binary) (*.psbt)"), &selected_filter);
+    if (filename.isEmpty()) {
+        return;
+    }
+    std::ofstream out(filename.toLocal8Bit().data());
+    out << ssTx.str();
+    out.close();
+    showStatus(tr("PSBT saved to disk."), StatusLevel::INFO);
+}
+
+void PSBTOperationsDialog::updateTransactionDisplay() {
+    m_ui->transactionDescription->setText(QString::fromStdString(renderTransaction(m_transaction_data)));
+    showTransactionStatus(m_transaction_data);
+}
+
+std::string PSBTOperationsDialog::renderTransaction(const PartiallySignedTransaction &psbtx)
+{
+    QString tx_description = "";
+    CAmount totalAmount = 0;
+    for (const CTxOut& out : psbtx.tx->vout) {
+        CTxDestination address;
+        ExtractDestination(out.scriptPubKey, address);
+        totalAmount += out.nValue;
+        tx_description.append(tr(" * Sends %1 to %2")
+            .arg(BitcoinUnits::formatWithUnit(BitcoinUnits::BTC, out.nValue))
+            .arg(QString::fromStdString(EncodeDestination(address))));
+        tx_description.append("<br>");
+    }
+
+    PSBTAnalysis analysis = AnalyzePSBT(psbtx);
+    tx_description.append(" * ");
+    if (!*analysis.fee) {
+        // This happens if the transaction is missing input UTXO information.
+        tx_description.append(tr("Unable to calculate transaction fee or total transaction amount."));
+    } else {
+        tx_description.append(tr("Pays transaction fee: "));
+        tx_description.append(BitcoinUnits::formatWithUnit(BitcoinUnits::BTC, *analysis.fee));
+
+        // add total amount in all subdivision units
+        tx_description.append("<hr />");
+        QStringList alternativeUnits;
+        for (const BitcoinUnits::Unit u : BitcoinUnits::availableUnits())
+        {
+            if(u != m_client_model->getOptionsModel()->getDisplayUnit()) {
+                alternativeUnits.append(BitcoinUnits::formatHtmlWithUnit(u, totalAmount));
+            }
+        }
+        tx_description.append(QString("<b>%1</b>: <b>%2</b>").arg(tr("Total Amount"))
+            .arg(BitcoinUnits::formatHtmlWithUnit(m_client_model->getOptionsModel()->getDisplayUnit(), totalAmount)));
+        tx_description.append(QString("<br /><span style='font-size:10pt; font-weight:normal;'>(=%1)</span>")
+            .arg(alternativeUnits.join(" " + tr("or") + " ")));
+    }
+
+    size_t num_unsigned = CountPSBTUnsignedInputs(psbtx);
+    if (num_unsigned > 0) {
+        tx_description.append("<br><br>");
+        tx_description.append(tr("Transaction has %1 unsigned inputs.").arg(QString::number(num_unsigned)));
+    }
+
+    return tx_description.toStdString();
+}
+
+void PSBTOperationsDialog::showStatus(const QString &msg, StatusLevel level) {
+    m_ui->statusBar->setText(msg);
+    switch (level) {
+        case StatusLevel::INFO: {
+            m_ui->statusBar->setStyleSheet("QLabel { background-color : lightgreen }");
+            break;
+        }
+        case StatusLevel::WARN: {
+            m_ui->statusBar->setStyleSheet("QLabel { background-color : orange }");
+            break;
+        }
+        case StatusLevel::ERR: {
+            m_ui->statusBar->setStyleSheet("QLabel { background-color : red }");
+            break;
+        }
+    }
+    m_ui->statusBar->show();
+}
+
+size_t PSBTOperationsDialog::couldSignInputs(const PartiallySignedTransaction &psbtx) {
+    size_t n_signed;
+    bool complete;
+    TransactionError err = m_wallet_model->wallet().fillPSBT(SIGHASH_ALL, false /* sign */, false /* bip32derivs */, m_transaction_data, complete, &n_signed);
+
+    if (err != TransactionError::OK) {
+        return 0;
+    }
+    return n_signed;
+}
+
+void PSBTOperationsDialog::showTransactionStatus(const PartiallySignedTransaction &psbtx) {
+    PSBTAnalysis analysis = AnalyzePSBT(psbtx);
+    size_t n_could_sign = couldSignInputs(psbtx);
+
+    switch (analysis.next) {
+        case PSBTRole::UPDATER: {
+            showStatus(tr("Transaction is missing some information about inputs."), StatusLevel::WARN);
+            break;
+        }
+        case PSBTRole::SIGNER: {
+            QString need_sig_text = tr("Transaction still needs signature(s).");
+            StatusLevel level = StatusLevel::INFO;
+            if (m_wallet_model->wallet().privateKeysDisabled()) {
+                need_sig_text += " " + tr("(But this wallet cannot sign transactions.)");
+                level = StatusLevel::WARN;
+            } else if (n_could_sign < 1) {
+                need_sig_text += " " + tr("(But this wallet does not have the right keys.)"); // XXX wording
+                level = StatusLevel::WARN;
+            }
+            showStatus(need_sig_text, level);
+            break;
+        }
+        case PSBTRole::FINALIZER:
+        case PSBTRole::EXTRACTOR: {
+            showStatus(tr("Transaction is fully signed and ready for broadcast."), StatusLevel::INFO);
+            break;
+        }
+        default: {
+            showStatus(tr("Transaction status is unknown."), StatusLevel::ERR);
+            break;
+        }
+    }
+}
diff --git a/src/qt/psbtoperationsdialog.h b/src/qt/psbtoperationsdialog.h
new file mode 100644
index 0000000000..f37bdbe39a
--- /dev/null
+++ b/src/qt/psbtoperationsdialog.h
@@ -0,0 +1,54 @@
+// Copyright (c) 2011-2020 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_QT_PSBTOPERATIONSDIALOG_H
+#define BITCOIN_QT_PSBTOPERATIONSDIALOG_H
+
+#include <QDialog>
+
+#include <psbt.h>
+#include <qt/clientmodel.h>
+#include <qt/walletmodel.h>
+
+namespace Ui {
+class PSBTOperationsDialog;
+}
+
+/** Dialog showing transaction details. */
+class PSBTOperationsDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit PSBTOperationsDialog(QWidget* parent, WalletModel* walletModel, ClientModel* clientModel);
+    ~PSBTOperationsDialog();
+
+    void openWithPSBT(PartiallySignedTransaction psbtx);
+
+public Q_SLOTS:
+    void signTransaction();
+    void broadcastTransaction();
+    void copyToClipboard();
+    void saveTransaction();
+
+private:
+    Ui::PSBTOperationsDialog* m_ui;
+    PartiallySignedTransaction m_transaction_data;
+    WalletModel* m_wallet_model;
+    ClientModel* m_client_model;
+
+    enum class StatusLevel {
+        INFO,
+        WARN,
+        ERR
+    };
+
+    size_t couldSignInputs(const PartiallySignedTransaction &psbtx);
+    void updateTransactionDisplay();
+    std::string renderTransaction(const PartiallySignedTransaction &psbtx);
+    void showStatus(const QString &msg, StatusLevel level);
+    void showTransactionStatus(const PartiallySignedTransaction &psbtx);
+};
+
+#endif // BITCOIN_QT_PSBTOPERATIONSDIALOG_H
diff --git a/src/qt/sendcoinsdialog.cpp b/src/qt/sendcoinsdialog.cpp
index 9e23fe78d8..0ac61f3adc 100644
--- a/src/qt/sendcoinsdialog.cpp
+++ b/src/qt/sendcoinsdialog.cpp
@@ -392,7 +392,7 @@ void SendCoinsDialog::on_sendButton_clicked()
         CMutableTransaction mtx = CMutableTransaction{*(m_current_transaction->getWtx())};
         PartiallySignedTransaction psbtx(mtx);
         bool complete = false;
-        const TransactionError err = model->wallet().fillPSBT(SIGHASH_ALL, false /* sign */, true /* bip32derivs */, psbtx, complete);
+        const TransactionError err = model->wallet().fillPSBT(SIGHASH_ALL, false /* sign */, true /* bip32derivs */, psbtx, complete, nullptr);
         assert(!complete);
         assert(err == TransactionError::OK);
         // Serialize the PSBT
diff --git a/src/qt/walletframe.cpp b/src/qt/walletframe.cpp
index 5e68ee4f93..ec56f2755f 100644
--- a/src/qt/walletframe.cpp
+++ b/src/qt/walletframe.cpp
@@ -165,11 +165,11 @@ void WalletFrame::gotoVerifyMessageTab(QString addr)
         walletView->gotoVerifyMessageTab(addr);
 }
 
-void WalletFrame::gotoLoadPSBT()
+void WalletFrame::gotoLoadPSBT(bool from_clipboard)
 {
     WalletView *walletView = currentWalletView();
     if (walletView) {
-        walletView->gotoLoadPSBT();
+        walletView->gotoLoadPSBT(from_clipboard);
     }
 }
 
diff --git a/src/qt/walletframe.h b/src/qt/walletframe.h
index d90ade5005..2b5f263468 100644
--- a/src/qt/walletframe.h
+++ b/src/qt/walletframe.h
@@ -79,7 +79,7 @@ public Q_SLOTS:
     void gotoVerifyMessageTab(QString addr = "");
 
     /** Load Partially Signed Bitcoin Transaction */
-    void gotoLoadPSBT();
+    void gotoLoadPSBT(bool from_clipboard = false);
 
     /** Encrypt the wallet */
     void encryptWallet(bool status);
diff --git a/src/qt/walletmodel.cpp b/src/qt/walletmodel.cpp
index 671b5e1ce6..72c75f7be0 100644
--- a/src/qt/walletmodel.cpp
+++ b/src/qt/walletmodel.cpp
@@ -536,7 +536,7 @@ bool WalletModel::bumpFee(uint256 hash, uint256& new_hash)
     if (create_psbt) {
         PartiallySignedTransaction psbtx(mtx);
         bool complete = false;
-        const TransactionError err = wallet().fillPSBT(SIGHASH_ALL, false /* sign */, true /* bip32derivs */, psbtx, complete);
+        const TransactionError err = wallet().fillPSBT(SIGHASH_ALL, false /* sign */, true /* bip32derivs */, psbtx, complete, nullptr);
         if (err != TransactionError::OK || complete) {
             QMessageBox::critical(nullptr, tr("Fee bump error"), tr("Can't draft transaction."));
             return false;
diff --git a/src/qt/walletview.cpp b/src/qt/walletview.cpp
index 861d1c5f4a..a3f303aea6 100644
--- a/src/qt/walletview.cpp
+++ b/src/qt/walletview.cpp
@@ -11,6 +11,7 @@
 #include <qt/askpassphrasedialog.h>
 #include <qt/clientmodel.h>
 #include <qt/guiutil.h>
+#include <qt/psbtoperationsdialog.h>
 #include <qt/optionsmodel.h>
 #include <qt/overviewpage.h>
 #include <qt/platformstyle.h>
@@ -27,6 +28,8 @@
 
 #include <QAction>
 #include <QActionGroup>
+#include <QApplication>
+#include <QClipboard>
 #include <QFileDialog>
 #include <QHBoxLayout>
 #include <QProgressDialog>
@@ -204,78 +207,42 @@ void WalletView::gotoVerifyMessageTab(QString addr)
         signVerifyMessageDialog->setAddress_VM(addr);
 }
 
-void WalletView::gotoLoadPSBT()
+void WalletView::gotoLoadPSBT(bool from_clipboard)
 {
-    QString filename = GUIUtil::getOpenFileName(this,
-        tr("Load Transaction Data"), QString(),
-        tr("Partially Signed Transaction (*.psbt)"), nullptr);
-    if (filename.isEmpty()) return;
-    if (GetFileSize(filename.toLocal8Bit().data(), MAX_FILE_SIZE_PSBT) == MAX_FILE_SIZE_PSBT) {
-        Q_EMIT message(tr("Error"), tr("PSBT file must be smaller than 100 MiB"), CClientUIInterface::MSG_ERROR);
-        return;
+    std::string data;
+
+    if (from_clipboard) {
+        std::string raw = QApplication::clipboard()->text().toStdString();
+        bool invalid;
+        data = DecodeBase64(raw, &invalid);
+        if (invalid) {
+            Q_EMIT message(tr("Error"), tr("Unable to decode PSBT from clipboard (invalid base64)"), CClientUIInterface::MSG_ERROR);
+            return;
+        }
+    } else {
+        QString filename = GUIUtil::getOpenFileName(this,
+            tr("Load Transaction Data"), QString(),
+            tr("Partially Signed Transaction (*.psbt)"), nullptr);
+        if (filename.isEmpty()) return;
+        if (GetFileSize(filename.toLocal8Bit().data(), MAX_FILE_SIZE_PSBT) == MAX_FILE_SIZE_PSBT) {
+            Q_EMIT message(tr("Error"), tr("PSBT file must be smaller than 100 MiB"), CClientUIInterface::MSG_ERROR);
+            return;
+        }
+        std::ifstream in(filename.toLocal8Bit().data(), std::ios::binary);
+        data = std::string(std::istreambuf_iterator<char>{in}, {});
     }
-    std::ifstream in(filename.toLocal8Bit().data(), std::ios::binary);
-    std::string data(std::istreambuf_iterator<char>{in}, {});
 
     std::string error;
     PartiallySignedTransaction psbtx;
     if (!DecodeRawPSBT(psbtx, data, error)) {
-        Q_EMIT message(tr("Error"), tr("Unable to decode PSBT file") + "\n" + QString::fromStdString(error), CClientUIInterface::MSG_ERROR);
+        Q_EMIT message(tr("Error"), tr("Unable to decode PSBT") + "\n" + QString::fromStdString(error), CClientUIInterface::MSG_ERROR);
         return;
     }
 
-    CMutableTransaction mtx;
-    bool complete = false;
-    PSBTAnalysis analysis = AnalyzePSBT(psbtx);
-    QMessageBox msgBox;
-    msgBox.setText("PSBT");
-    switch (analysis.next) {
-    case PSBTRole::CREATOR:
-    case PSBTRole::UPDATER:
-        msgBox.setInformativeText("PSBT is incomplete. Copy to clipboard for manual inspection?");
-        break;
-    case PSBTRole::SIGNER:
-        msgBox.setInformativeText("Transaction needs more signatures. Copy to clipboard?");
-        break;
-    case PSBTRole::FINALIZER:
-    case PSBTRole::EXTRACTOR:
-        complete = FinalizeAndExtractPSBT(psbtx, mtx);
-        if (complete) {
-            msgBox.setInformativeText(tr("Would you like to send this transaction?"));
-        } else {
-            // The analyzer missed something, e.g. if there are final_scriptSig/final_scriptWitness
-            // but with invalid signatures.
-            msgBox.setInformativeText(tr("There was an unexpected problem processing the PSBT. Copy to clipboard for manual inspection?"));
-        }
-    }
-
-    msgBox.setStandardButtons(QMessageBox::Yes | QMessageBox::Cancel);
-    switch (msgBox.exec()) {
-    case QMessageBox::Yes: {
-        if (complete) {
-            std::string err_string;
-            CTransactionRef tx = MakeTransactionRef(mtx);
-
-            TransactionError result = BroadcastTransaction(*clientModel->node().context(), tx, err_string, DEFAULT_MAX_RAW_TX_FEE_RATE.GetFeePerK(), /* relay */ true, /* wait_callback */ false);
-            if (result == TransactionError::OK) {
-                Q_EMIT message(tr("Success"), tr("Broadcasted transaction successfully."), CClientUIInterface::MSG_INFORMATION | CClientUIInterface::MODAL);
-            } else {
-                Q_EMIT message(tr("Error"), QString::fromStdString(err_string), CClientUIInterface::MSG_ERROR);
-            }
-        } else {
-            // Serialize the PSBT
-            CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
-            ssTx << psbtx;
-            GUIUtil::setClipboard(EncodeBase64(ssTx.str()).c_str());
-            Q_EMIT message(tr("PSBT copied"), "Copied to clipboard", CClientUIInterface::MSG_INFORMATION);
-            return;
-        }
-    }
-    case QMessageBox::Cancel:
-        break;
-    default:
-        assert(false);
-    }
+    PSBTOperationsDialog* dlg = new PSBTOperationsDialog(this, walletModel, clientModel);
+    dlg->openWithPSBT(psbtx);
+    dlg->setAttribute(Qt::WA_DeleteOnClose);
+    dlg->exec();
 }
 
 bool WalletView::handlePaymentRequest(const SendCoinsRecipient& recipient)
diff --git a/src/qt/walletview.h b/src/qt/walletview.h
index fd09456baa..f186554758 100644
--- a/src/qt/walletview.h
+++ b/src/qt/walletview.h
@@ -84,7 +84,7 @@ public Q_SLOTS:
     /** Show Sign/Verify Message dialog and switch to verify message tab */
     void gotoVerifyMessageTab(QString addr = "");
     /** Load Partially Signed Bitcoin Transaction */
-    void gotoLoadPSBT();
+    void gotoLoadPSBT(bool from_clipboard = false);
 
     /** Show incoming transaction notification for new transactions.