[Qt] Support for abandoned/abandoning transactions

src/Makefile.qt.include

@@ -268,7 +268,8 @@ RES_ICONS = \
   qt/res/icons/tx_output.png \
   qt/res/icons/tx_mined.png \
   qt/res/icons/warning.png \
-  qt/res/icons/verify.png
+  qt/res/icons/verify.png \
+  qt/res/icons/transaction_abandoned.png
 
 BITCOIN_QT_CPP = \
   qt/bantablemodel.cpp \

src/qt/bitcoin.qrc

@@ -49,6 +49,7 @@
         <file alias="fontbigger">res/icons/fontbigger.png</file>
         <file alias="fontsmaller">res/icons/fontsmaller.png</file>
         <file alias="prompticon">res/icons/chevron.png</file>
+        <file alias="transaction_abandoned">res/icons/transaction_abandoned.png</file>
     </qresource>
     <qresource prefix="/movies">
         <file alias="spinner-000">res/movies/spinner-000.png</file>

src/qt/guiconstants.h

@@ -29,6 +29,8 @@ static const bool DEFAULT_SPLASHSCREEN = true;
 #define COLOR_TX_STATUS_OPENUNTILDATE QColor(64, 64, 255)
 /* Transaction list -- TX status decoration - offline */
 #define COLOR_TX_STATUS_OFFLINE QColor(192, 192, 192)
+/* Transaction list -- TX status decoration - danger, tx needs attention */
+#define COLOR_TX_STATUS_DANGER QColor(200, 100, 100)
 /* Transaction list -- TX status decoration - default color */
 #define COLOR_BLACK QColor(0, 0, 0)
 

src/qt/transactiondesc.cpp

@@ -39,7 +39,7 @@ QString TransactionDesc::FormatTxStatus(const CWalletTx& wtx)
         else if (GetAdjustedTime() - wtx.nTimeReceived > 2 * 60 && wtx.GetRequestCount() == 0)
             return tr("%1/offline").arg(nDepth);
         else if (nDepth == 0)
-            return tr("0/unconfirmed, %1").arg((wtx.InMempool() ? tr("in memory pool") : tr("not in memory pool")));
+            return tr("0/unconfirmed, %1").arg((wtx.InMempool() ? tr("in memory pool") : tr("not in memory pool"))) + (wtx.isAbandoned() ? ", "+tr("abandoned") : "");
         else if (nDepth < 6)
             return tr("%1/unconfirmed").arg(nDepth);
         else

src/qt/transactionrecord.cpp

@@ -239,6 +239,8 @@ void TransactionRecord::updateStatus(const CWalletTx &wtx)
         else if (status.depth == 0)
         {
             status.status = TransactionStatus::Unconfirmed;
+            if (wtx.isAbandoned())
+                status.status = TransactionStatus::Abandoned;
         }
         else if (status.depth < RecommendedNumConfirmations)
         {

src/qt/transactionrecord.h

@@ -33,6 +33,7 @@ public:
         Unconfirmed,        /**< Not yet mined into a block **/
         Confirming,         /**< Confirmed, but waiting for the recommended number of confirmations **/
         Conflicted,         /**< Conflicts with other transaction or mempool **/
+        Abandoned,          /**< Abandoned from the wallet **/
         /// Generated (mined) transactions
         Immature,           /**< Mined but waiting for maturity */
         MaturesWarning,     /**< Transaction will likely not mature because no nodes have confirmed */

src/qt/transactiontablemodel.cpp

@@ -312,6 +312,9 @@ QString TransactionTableModel::formatTxStatus(const TransactionRecord *wtx) cons
     case TransactionStatus::Unconfirmed:
         status = tr("Unconfirmed");
         break;
+    case TransactionStatus::Abandoned:
+        status = tr("Abandoned");
+        break;
     case TransactionStatus::Confirming:
         status = tr("Confirming (%1 of %2 recommended confirmations)").arg(wtx->status.depth).arg(TransactionRecord::RecommendedNumConfirmations);
         break;
@@ -468,6 +471,8 @@ QVariant TransactionTableModel::txStatusDecoration(const TransactionRecord *wtx)
         return COLOR_TX_STATUS_OFFLINE;
     case TransactionStatus::Unconfirmed:
         return QIcon(":/icons/transaction_0");
+    case TransactionStatus::Abandoned:
+        return QIcon(":/icons/transaction_abandoned");
     case TransactionStatus::Confirming:
         switch(wtx->status.depth)
         {
@@ -573,6 +578,11 @@ QVariant TransactionTableModel::data(const QModelIndex &index, int role) const
     case Qt::TextAlignmentRole:
         return column_alignments[index.column()];
     case Qt::ForegroundRole:
+        // Use the "danger" color for abandoned transactions
+        if(rec->status.status == TransactionStatus::Abandoned)
+        {
+            return COLOR_TX_STATUS_DANGER;
+        }
         // Non-confirmed (but not immature) as transactions are grey
         if(!rec->status.countsForBalance && rec->status.status != TransactionStatus::Immature)
         {

src/qt/transactionview.cpp

@@ -37,7 +37,7 @@
 
 TransactionView::TransactionView(const PlatformStyle *platformStyle, QWidget *parent) :
     QWidget(parent), model(0), transactionProxyModel(0),
-    transactionView(0)
+    transactionView(0), abandonAction(0)
 {
     // Build filter row
     setContentsMargins(0,0,0,0);
@@ -137,6 +137,7 @@ TransactionView::TransactionView(const PlatformStyle *platformStyle, QWidget *pa
     transactionView = view;
 
     // Actions
+    abandonAction = new QAction(tr("Abandon transaction"), this);
     QAction *copyAddressAction = new QAction(tr("Copy address"), this);
     QAction *copyLabelAction = new QAction(tr("Copy label"), this);
     QAction *copyAmountAction = new QAction(tr("Copy amount"), this);
@@ -153,8 +154,10 @@ TransactionView::TransactionView(const PlatformStyle *platformStyle, QWidget *pa
     contextMenu->addAction(copyTxIDAction);
     contextMenu->addAction(copyTxHexAction);
     contextMenu->addAction(copyTxPlainText);
-    contextMenu->addAction(editLabelAction);
     contextMenu->addAction(showDetailsAction);
+    contextMenu->addSeparator();
+    contextMenu->addAction(abandonAction);
+    contextMenu->addAction(editLabelAction);
 
     mapperThirdPartyTxUrls = new QSignalMapper(this);
 
@@ -170,6 +173,7 @@ TransactionView::TransactionView(const PlatformStyle *platformStyle, QWidget *pa
     connect(view, SIGNAL(doubleClicked(QModelIndex)), this, SIGNAL(doubleClicked(QModelIndex)));
     connect(view, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(contextualMenu(QPoint)));
 
+    connect(abandonAction, SIGNAL(triggered()), this, SLOT(abandonTx()));
     connect(copyAddressAction, SIGNAL(triggered()), this, SLOT(copyAddress()));
     connect(copyLabelAction, SIGNAL(triggered()), this, SLOT(copyLabel()));
     connect(copyAmountAction, SIGNAL(triggered()), this, SLOT(copyAmount()));
@@ -360,12 +364,37 @@ void TransactionView::exportClicked()
 void TransactionView::contextualMenu(const QPoint &point)
 {
     QModelIndex index = transactionView->indexAt(point);
+    QModelIndexList selection = transactionView->selectionModel()->selectedRows(0);
+
+    // check if transaction can be abandoned, disable context menu action in case it doesn't
+    uint256 hash;
+    hash.SetHex(selection.at(0).data(TransactionTableModel::TxHashRole).toString().toStdString());
+    abandonAction->setEnabled(model->transactionCanBeAbandoned(hash));
+
     if(index.isValid())
     {
         contextMenu->exec(QCursor::pos());
     }
 }
 
+void TransactionView::abandonTx()
+{
+    if(!transactionView || !transactionView->selectionModel())
+        return;
+    QModelIndexList selection = transactionView->selectionModel()->selectedRows(0);
+
+    // get the hash from the TxHashRole (QVariant / QString)
+    uint256 hash;
+    QString hashQStr = selection.at(0).data(TransactionTableModel::TxHashRole).toString();
+    hash.SetHex(hashQStr.toStdString());
+
+    // Abandon the wallet transaction over the walletModel
+    model->abandonTransaction(hash);
+
+    // Update the table
+    model->getTransactionTableModel()->updateTransaction(hashQStr, CT_UPDATED, false);
+}
+
 void TransactionView::copyAddress()
 {
     GUIUtil::copyEntryData(transactionView, 0, TransactionTableModel::AddressRole);

src/qt/transactionview.h

@@ -75,6 +75,7 @@ private:
     QFrame *dateRangeWidget;
     QDateTimeEdit *dateFrom;
     QDateTimeEdit *dateTo;
+    QAction *abandonAction;
 
     QWidget *createDateRangeWidget();
 
@@ -97,6 +98,7 @@ private Q_SLOTS:
     void copyTxPlainText();
     void openThirdPartyTxUrl(QString url);
     void updateWatchOnlyColumn(bool fHaveWatchOnly);
+    void abandonTx();
 
 Q_SIGNALS:
     void doubleClicked(const QModelIndex&);

src/qt/walletmodel.cpp

@@ -668,3 +668,18 @@ bool WalletModel::saveReceiveRequest(const std::string &sAddress, const int64_t
     else
         return wallet->AddDestData(dest, key, sRequest);
 }
+
+bool WalletModel::transactionCanBeAbandoned(uint256 hash) const
+{
+    LOCK2(cs_main, wallet->cs_wallet);
+    const CWalletTx *wtx = wallet->GetWalletTx(hash);
+    if (!wtx || wtx->isAbandoned() || wtx->GetDepthInMainChain() > 0 || wtx->InMempool())
+        return false;
+    return true;
+}
+
+bool WalletModel::abandonTransaction(uint256 hash) const
+{
+    LOCK2(cs_main, wallet->cs_wallet);
+    return wallet->AbandonTransaction(hash);
+}

src/qt/walletmodel.h

@@ -200,6 +200,9 @@ public:
     void loadReceiveRequests(std::vector<std::string>& vReceiveRequests);
     bool saveReceiveRequest(const std::string &sAddress, const int64_t nId, const std::string &sRequest);
 
+    bool transactionCanBeAbandoned(uint256 hash) const;
+    bool abandonTransaction(uint256 hash) const;
+
 private:
     CWallet *wallet;
     bool fHaveWatchOnly;