From e8f3dbeb28cb84f81a54ac847ef48eaa2612755e Mon Sep 17 00:00:00 2001
From: Luke Dashjr <luke-jr+git@utopios.org>
Date: Tue, 7 Feb 2017 23:28:03 +0000
Subject: [PATCH] Qt/Options: Configure blockreconstructionextratxn using
 rwconf

---
 src/qt/optionsdialog.cpp | 13 +++++++++++++
 src/qt/optionsdialog.h   |  2 ++
 src/qt/optionsmodel.cpp  |  9 +++++++++
 src/qt/optionsmodel.h    |  1 +
 4 files changed, 25 insertions(+)

diff --git a/src/qt/optionsdialog.cpp b/src/qt/optionsdialog.cpp
index d910d7285b..881a7bf5fe 100644
--- a/src/qt/optionsdialog.cpp
+++ b/src/qt/optionsdialog.cpp
@@ -200,6 +200,17 @@ OptionsDialog::OptionsDialog(QWidget* parent, bool enableWallet)
     ui->verticalLayout_Wallet->insertWidget(0, walletrbf);
     FixTabOrder(walletrbf);
 
+    /* Network tab */
+    QLayoutItem *spacer = ui->verticalLayout_Network->takeAt(ui->verticalLayout_Network->count() - 1);
+    prevwidget = dynamic_cast<QWidgetItem*>(ui->verticalLayout_Network->itemAt(ui->verticalLayout_Network->count() - 1))->widget();
+
+    blockreconstructionextratxn = new QSpinBox(ui->tabNetwork);
+    blockreconstructionextratxn->setMinimum(0);
+    blockreconstructionextratxn->setMaximum(std::numeric_limits<int>::max());
+    CreateOptionUI(ui->verticalLayout_Network, blockreconstructionextratxn, tr("Keep at most %s extra transactions in memory for compact block reconstruction"));
+
+    ui->verticalLayout_Network->addItem(spacer);
+
     prevwidget = ui->peerbloomfilters;
 
     /* Mempool tab */
@@ -550,6 +561,8 @@ void OptionsDialog::setMapper()
         ui->peerblockfilters->setToolTip(ui->peerblockfilters->toolTip() + " " + tr("(only available if enabled at least once before turning on pruning)"));
     }
 
+    mapper->addMapping(blockreconstructionextratxn, OptionsModel::blockreconstructionextratxn);
+
     /* Mempool tab */
 
     QVariant current_mempoolreplacement = model->data(model->index(OptionsModel::mempoolreplacement, 0), Qt::EditRole);
diff --git a/src/qt/optionsdialog.h b/src/qt/optionsdialog.h
index e0bec76e3e..e99ca735d4 100644
--- a/src/qt/optionsdialog.h
+++ b/src/qt/optionsdialog.h
@@ -96,6 +96,8 @@ private:
 
     QCheckBox *walletrbf;
 
+    QSpinBox *blockreconstructionextratxn;
+
     QValueComboBox *mempoolreplacement;
     QSpinBox *maxorphantx;
     QSpinBox *maxmempool;
diff --git a/src/qt/optionsmodel.cpp b/src/qt/optionsmodel.cpp
index 07a6455b24..28a8d013b7 100644
--- a/src/qt/optionsmodel.cpp
+++ b/src/qt/optionsmodel.cpp
@@ -675,6 +675,8 @@ QVariant OptionsModel::getOption(OptionID option, const std::string& suffix) con
         return qlonglong(gArgs.GetIntArg("-blockprioritysize", DEFAULT_BLOCK_PRIORITY_SIZE) / 1000);
     case blockmaxweight:
         return qlonglong(gArgs.GetIntArg("-blockmaxweight", DEFAULT_BLOCK_MAX_WEIGHT) / 1000);
+    case blockreconstructionextratxn:
+        return qlonglong(gArgs.GetIntArg("-blockreconstructionextratxn", DEFAULT_BLOCK_RECONSTRUCTION_EXTRA_TXN));
     default:
         return QVariant();
     }
@@ -1176,6 +1178,13 @@ bool OptionsModel::setOption(OptionID option, const QVariant& value, const std::
             gArgs.ModifyRWConfigFile(strKey, strNv);
         }
         break;
+    case blockreconstructionextratxn:
+        if (changed()) {
+            std::string strNv = value.toString().toStdString();
+            gArgs.ForceSetArg("-blockreconstructionextratxn", strNv);
+            gArgs.ModifyRWConfigFile("blockreconstructionextratxn", strNv);
+        }
+        break;
     default:
         break;
     }
diff --git a/src/qt/optionsmodel.h b/src/qt/optionsmodel.h
index bfb9c45131..5b3ba871f9 100644
--- a/src/qt/optionsmodel.h
+++ b/src/qt/optionsmodel.h
@@ -98,6 +98,7 @@ public:
         blockmaxsize,
         blockprioritysize,
         blockmaxweight,
+        blockreconstructionextratxn,
         OptionIDRowCount,
     };