[gui] PSBT Operations Dialog (sign & broadcast)

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.

1 files changed, 54 insertions, 0 deletions

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