From 0237d95323dec7c65b7223c314afdf63aab6b11b Mon Sep 17 00:00:00 2001
From: Prateek Sancheti <psancheti110@gmail.com>
Date: Sat, 7 Aug 2021 13:47:17 +0530
Subject: qt: Add Load PSBT functionaliy with nowallet

---
 src/qt/walletframe.cpp | 42 +++++++++++++++++++++++++++++++++++++++---
 1 file changed, 39 insertions(+), 3 deletions(-)

(limited to 'src/qt/walletframe.cpp')

diff --git a/src/qt/walletframe.cpp b/src/qt/walletframe.cpp
index a1f357e0db..3d8bc0c7c5 100644
--- a/src/qt/walletframe.cpp
+++ b/src/qt/walletframe.cpp
@@ -4,12 +4,18 @@
 
 #include <qt/walletframe.h>
 
+#include <node/ui_interface.h>
+#include <psbt.h>
+#include <qt/guiutil.h>
 #include <qt/overviewpage.h>
+#include <qt/psbtoperationsdialog.h>
 #include <qt/walletmodel.h>
 #include <qt/walletview.h>
 
 #include <cassert>
 
+#include <QApplication>
+#include <QClipboard>
 #include <QGroupBox>
 #include <QHBoxLayout>
 #include <QLabel>
@@ -184,10 +190,40 @@ void WalletFrame::gotoVerifyMessageTab(QString addr)
 
 void WalletFrame::gotoLoadPSBT(bool from_clipboard)
 {
-    WalletView *walletView = currentWalletView();
-    if (walletView) {
-        walletView->gotoLoadPSBT(from_clipboard);
+    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::string error;
+    PartiallySignedTransaction psbtx;
+    if (!DecodeRawPSBT(psbtx, data, error)) {
+        Q_EMIT message(tr("Error"), tr("Unable to decode PSBT") + "\n" + QString::fromStdString(error), CClientUIInterface::MSG_ERROR);
+        return;
+    }
+
+    PSBTOperationsDialog* dlg = new PSBTOperationsDialog(this, currentWalletModel(), clientModel);
+    dlg->openWithPSBT(psbtx);
+    dlg->setAttribute(Qt::WA_DeleteOnClose);
+    dlg->exec();
 }
 
 void WalletFrame::encryptWallet()
-- 
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