[Qt] Clean up and fix coincontrol tree widget handling

- Do sorting for date, amount and confirmations column as longlong, not
  unsigned longlong.
- Use `UserRole` to store our own data. This makes it treated as
  ancillary data prevents it from being displayed.
- Get rid of `getMappedColumn` `strPad` - these are no longer necessary.
- Get rid of hidden `_INT64` columns.
- Start enumeration from 0 (otherwise values are undefined).

src/qt/coincontroldialog.cpp

@@ -37,10 +37,8 @@ bool CoinControlDialog::fSubtractFeeFromAmount = false;
 
 bool CCoinControlWidgetItem::operator<(const QTreeWidgetItem &other) const {
     int column = treeWidget()->sortColumn();
-    if (column == CoinControlDialog::COLUMN_AMOUNT_INT64 || column == CoinControlDialog::COLUMN_AMOUNT_INT64)
+    if (column == CoinControlDialog::COLUMN_AMOUNT || column == CoinControlDialog::COLUMN_DATE || column == CoinControlDialog::COLUMN_CONFIRMATIONS)
-        return data(CoinControlDialog::COLUMN_AMOUNT_INT64, Qt::DisplayRole).toULongLong() < other.data(CoinControlDialog::COLUMN_AMOUNT_INT64, Qt::DisplayRole).toULongLong();
+        return data(column, Qt::UserRole).toLongLong() < other.data(column, Qt::UserRole).toLongLong();
-    if (column == CoinControlDialog::COLUMN_DATE || column == CoinControlDialog::COLUMN_DATE_INT64)
-        return data(CoinControlDialog::COLUMN_DATE_INT64, Qt::DisplayRole).toULongLong() < other.data(CoinControlDialog::COLUMN_DATE_INT64, Qt::DisplayRole).toULongLong();
     return QTreeWidgetItem::operator<(other);
 }
 
@@ -137,11 +135,9 @@ CoinControlDialog::CoinControlDialog(const PlatformStyle *_platformStyle, QWidge
     ui->treeWidget->setColumnWidth(COLUMN_CONFIRMATIONS, 110);
     ui->treeWidget->setColumnHidden(COLUMN_TXHASH, true);         // store transaction hash in this column, but don't show it
     ui->treeWidget->setColumnHidden(COLUMN_VOUT_INDEX, true);     // store vout index in this column, but don't show it
-    ui->treeWidget->setColumnHidden(COLUMN_AMOUNT_INT64, true);   // store amount int64 in this column, but don't show it
-    ui->treeWidget->setColumnHidden(COLUMN_DATE_INT64, true);     // store date int64 in this column, but don't show it
 
     // default view is sorted by amount desc
-    sortView(COLUMN_AMOUNT_INT64, Qt::DescendingOrder);
+    sortView(COLUMN_AMOUNT, Qt::DescendingOrder);
 
     // restore list mode and sortorder as a convenience feature
     QSettings settings;
@@ -173,15 +169,6 @@ void CoinControlDialog::setModel(WalletModel *_model)
     }
 }
 
-// helper function str_pad
-QString CoinControlDialog::strPad(QString s, int nPadLength, QString sPadding)
-{
-    while (s.length() < nPadLength)
-        s = sPadding + s;
-
-    return s;
-}
-
 // ok button
 void CoinControlDialog::buttonBoxClicked(QAbstractButton* button)
 {
@@ -347,7 +334,7 @@ void CoinControlDialog::sortView(int column, Qt::SortOrder order)
     sortColumn = column;
     sortOrder = order;
     ui->treeWidget->sortItems(column, order);
-    ui->treeWidget->header()->setSortIndicator(getMappedColumn(sortColumn), sortOrder);
+    ui->treeWidget->header()->setSortIndicator(sortColumn, sortOrder);
 }
 
 // treeview: clicked on header
@@ -355,12 +342,10 @@ void CoinControlDialog::headerSectionClicked(int logicalIndex)
 {
     if (logicalIndex == COLUMN_CHECKBOX) // click on most left column -> do nothing
     {
-        ui->treeWidget->header()->setSortIndicator(getMappedColumn(sortColumn), sortOrder);
+        ui->treeWidget->header()->setSortIndicator(sortColumn, sortOrder);
     }
     else
     {
-        logicalIndex = getMappedColumn(logicalIndex, false);
-
         if (sortColumn == logicalIndex)
             sortOrder = ((sortOrder == Qt::AscendingOrder) ? Qt::DescendingOrder : Qt::AscendingOrder);
         else
@@ -730,14 +715,15 @@ void CoinControlDialog::updateView()
 
             // amount
             itemOutput->setText(COLUMN_AMOUNT, BitcoinUnits::format(nDisplayUnit, out.tx->vout[out.i].nValue));
-            itemOutput->setData(COLUMN_AMOUNT_INT64, Qt::DisplayRole, QVariant((qlonglong)out.tx->vout[out.i].nValue)); // padding so that sorting works correctly
+            itemOutput->setData(COLUMN_AMOUNT, Qt::UserRole, QVariant((qlonglong)out.tx->vout[out.i].nValue)); // padding so that sorting works correctly
 
             // date
             itemOutput->setText(COLUMN_DATE, GUIUtil::dateTimeStr(out.tx->GetTxTime()));
-            itemOutput->setData(COLUMN_DATE_INT64, Qt::DisplayRole, QVariant((qlonglong)out.tx->GetTxTime()));
+            itemOutput->setData(COLUMN_DATE, Qt::UserRole, QVariant((qlonglong)out.tx->GetTxTime()));
 
             // confirmations
-            itemOutput->setText(COLUMN_CONFIRMATIONS, strPad(QString::number(out.nDepth), 8, " "));
+            itemOutput->setText(COLUMN_CONFIRMATIONS, QString::number(out.nDepth));
+            itemOutput->setData(COLUMN_CONFIRMATIONS, Qt::UserRole, QVariant((qlonglong)out.nDepth));
 
             // transaction hash
             uint256 txhash = out.tx->GetHash();
@@ -765,7 +751,7 @@ void CoinControlDialog::updateView()
         {
             itemWalletAddress->setText(COLUMN_CHECKBOX, "(" + QString::number(nChildren) + ")");
             itemWalletAddress->setText(COLUMN_AMOUNT, BitcoinUnits::format(nDisplayUnit, nSum));
-            itemWalletAddress->setText(COLUMN_AMOUNT_INT64, strPad(QString::number(nSum), 15, " "));
+            itemWalletAddress->setData(COLUMN_AMOUNT, Qt::UserRole, QVariant((qlonglong)nSum));
         }
     }
 

src/qt/coincontroldialog.h

@@ -70,13 +70,12 @@ private:
 
     const PlatformStyle *platformStyle;
 
-    QString strPad(QString, int, QString);
     void sortView(int, Qt::SortOrder);
     void updateView();
 
     enum
     {
-        COLUMN_CHECKBOX,
+        COLUMN_CHECKBOX = 0,
         COLUMN_AMOUNT,
         COLUMN_LABEL,
         COLUMN_ADDRESS,
@@ -84,32 +83,9 @@ private:
         COLUMN_CONFIRMATIONS,
         COLUMN_TXHASH,
         COLUMN_VOUT_INDEX,
-        COLUMN_AMOUNT_INT64,
-        COLUMN_DATE_INT64
     };
     friend class CCoinControlWidgetItem;
 
-    // some columns have a hidden column containing the value used for sorting
-    int getMappedColumn(int column, bool fVisibleColumn = true)
-    {
-        if (fVisibleColumn)
-        {
-            if (column == COLUMN_AMOUNT_INT64)
-                return COLUMN_AMOUNT;
-            else if (column == COLUMN_DATE_INT64)
-                return COLUMN_DATE;
-        }
-        else
-        {
-            if (column == COLUMN_AMOUNT)
-                return COLUMN_AMOUNT_INT64;
-            else if (column == COLUMN_DATE)
-                return COLUMN_DATE_INT64;
-        }
-
-        return column;
-    }
-
 private Q_SLOTS:
     void showMenu(const QPoint &);
     void copyAmount();