qt: Add Load PSBT functionaliy with nowallet

1 files changed, 22 insertions, 11 deletions

diff --git a/src/qt/psbtoperationsdialog.cpp b/src/qt/psbtoperationsdialog.cpp
index 2adfeeaaf0..289fb9f7c8 100644
--- a/src/qt/psbtoperationsdialog.cpp
+++ b/src/qt/psbtoperationsdialog.cpp
@@ -47,18 +47,22 @@ 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 */, &n_could_sign, m_transaction_data, complete);
-    if (err != TransactionError::OK) {
-        showStatus(tr("Failed to load transaction: %1")
-            .arg(QString::fromStdString(TransactionErrorString(err).translated)), StatusLevel::ERR);
-        return;
+    bool complete = FinalizePSBT(psbtx); // Make sure all existing signatures are fully combined before checking for completeness.
+    if (m_wallet_model) {
+        size_t n_could_sign;
+        TransactionError err = m_wallet_model->wallet().fillPSBT(SIGHASH_ALL, false /* sign */, true /* bip32derivs */, &n_could_sign, m_transaction_data, complete);
+        if (err != TransactionError::OK) {
+            showStatus(tr("Failed to load transaction: %1")
+                           .arg(QString::fromStdString(TransactionErrorString(err).translated)),
+                       StatusLevel::ERR);
+            return;
+        }
+        m_ui->signTransactionButton->setEnabled(!complete && !m_wallet_model->wallet().privateKeysDisabled() && n_could_sign > 0);
+    } else {
+        m_ui->signTransactionButton->setEnabled(false);
     }
 
     m_ui->broadcastTransactionButton->setEnabled(complete);
-    m_ui->signTransactionButton->setEnabled(!complete && !m_wallet_model->wallet().privateKeysDisabled() && n_could_sign > 0);
 
     updateTransactionDisplay();
 }
@@ -133,7 +137,7 @@ void PSBTOperationsDialog::saveTransaction() {
         }
         CTxDestination address;
         ExtractDestination(out.scriptPubKey, address);
-        QString amount = BitcoinUnits::format(m_wallet_model->getOptionsModel()->getDisplayUnit(), out.nValue);
+        QString amount = BitcoinUnits::format(m_client_model->getOptionsModel()->getDisplayUnit(), out.nValue);
         QString address_str = QString::fromStdString(EncodeDestination(address));
         filename_suggestion.append(address_str + "-" + amount);
         first = false;
@@ -224,6 +228,10 @@ void PSBTOperationsDialog::showStatus(const QString &msg, StatusLevel level) {
 }
 
 size_t PSBTOperationsDialog::couldSignInputs(const PartiallySignedTransaction &psbtx) {
+    if (!m_wallet_model) {
+        return 0;
+    }
+
     size_t n_signed;
     bool complete;
     TransactionError err = m_wallet_model->wallet().fillPSBT(SIGHASH_ALL, false /* sign */, false /* bip32derivs */, &n_signed, m_transaction_data, complete);
@@ -246,7 +254,10 @@ void PSBTOperationsDialog::showTransactionStatus(const PartiallySignedTransactio
         case PSBTRole::SIGNER: {
             QString need_sig_text = tr("Transaction still needs signature(s).");
             StatusLevel level = StatusLevel::INFO;
-            if (m_wallet_model->wallet().privateKeysDisabled()) {
+            if (!m_wallet_model) {
+                need_sig_text += " " + tr("(But no wallet is loaded.)");
+                level = StatusLevel::WARN;
+            } else 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) {