[Qt] Optionally add third party links to transaction context menu

src/qt/forms/optionsdialog.ui

@@ -471,6 +471,30 @@
          </property>
         </widget>
        </item>
+       <item>
+        <layout class="QHBoxLayout" name="horizontalLayout_3_Display">
+         <item>
+          <widget class="QLabel" name="thirdPartyTxUrlsLabel">
+           <property name="toolTip">
+            <string>Third party URLs (e.g. a block explorer) that appear in the transactions tab as context menu items. %s in the URL is replaced by transaction hash. Multiple URLs are separated by vertical bar |.</string>
+           </property>
+           <property name="text">
+            <string>Third party transaction URLs</string>
+           </property>
+           <property name="buddy">
+            <cstring>thirdPartyTxUrls</cstring>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QLineEdit" name="thirdPartyTxUrls">
+           <property name="toolTip">
+            <string>Third party URLs (e.g. a block explorer) that appear in the transactions tab as context menu items. %s in the URL is replaced by transaction hash. Multiple URLs are separated by vertical bar |.</string>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </item>
        <item>
         <spacer name="verticalSpacer_Display">
          <property name="orientation">

src/qt/optionsdialog.cpp

@@ -96,6 +96,9 @@ OptionsDialog::OptionsDialog(QWidget *parent) :
 #endif
         }
     }
+#if QT_VERSION >= 0x040700
+    ui->thirdPartyTxUrls->setPlaceholderText("https://example.com/tx/%s");
+#endif
 
     ui->unit->setModel(new BitcoinUnits(this));
     ui->transactionFee->setSingleStep(CTransaction::nMinTxFee);
@@ -151,6 +154,7 @@ void OptionsDialog::setModel(OptionsModel *model)
     connect(ui->connectSocks, SIGNAL(clicked(bool)), this, SLOT(showRestartWarning()));
     /* Display */
     connect(ui->lang, SIGNAL(valueChanged()), this, SLOT(showRestartWarning()));
+    connect(ui->thirdPartyTxUrls, SIGNAL(textChanged(const QString &)), this, SLOT(showRestartWarning()));
 }
 
 void OptionsDialog::setMapper()
@@ -183,6 +187,7 @@ void OptionsDialog::setMapper()
     mapper->addMapping(ui->lang, OptionsModel::Language);
     mapper->addMapping(ui->unit, OptionsModel::DisplayUnit);
     mapper->addMapping(ui->displayAddresses, OptionsModel::DisplayAddresses);
+    mapper->addMapping(ui->thirdPartyTxUrls, OptionsModel::ThirdPartyTxUrls);
 }
 
 void OptionsDialog::enableOkButton()

src/qt/optionsmodel.cpp

@@ -63,6 +63,10 @@ void OptionsModel::Init()
         settings.setValue("bDisplayAddresses", false);
     bDisplayAddresses = settings.value("bDisplayAddresses", false).toBool();
 
+    if (!settings.contains("strThirdPartyTxUrls"))
+        settings.setValue("strThirdPartyTxUrls", "");
+    strThirdPartyTxUrls = settings.value("strThirdPartyTxUrls", "").toString();
+
     if (!settings.contains("fCoinControlFeatures"))
         settings.setValue("fCoinControlFeatures", false);
     fCoinControlFeatures = settings.value("fCoinControlFeatures", false).toBool();
@@ -203,6 +207,8 @@ QVariant OptionsModel::data(const QModelIndex & index, int role) const
             return nDisplayUnit;
         case DisplayAddresses:
             return bDisplayAddresses;
+        case ThirdPartyTxUrls:
+            return strThirdPartyTxUrls;
         case Language:
             return settings.value("language");
         case CoinControlFeatures:
@@ -304,6 +310,13 @@ bool OptionsModel::setData(const QModelIndex & index, const QVariant & value, in
             bDisplayAddresses = value.toBool();
             settings.setValue("bDisplayAddresses", bDisplayAddresses);
             break;
+        case ThirdPartyTxUrls:
+            if (strThirdPartyTxUrls != value.toString()) {
+                strThirdPartyTxUrls = value.toString();
+                settings.setValue("strThirdPartyTxUrls", strThirdPartyTxUrls);
+                setRestartRequired(true);
+            }
+            break;
         case Language:
             if (settings.value("language") != value) {
                 settings.setValue("language", value);

src/qt/optionsmodel.h

@@ -36,6 +36,7 @@ class OptionsModel : public QAbstractListModel
         Fee,                    // qint64
         DisplayUnit,            // BitcoinUnits::Unit
         DisplayAddresses,       // bool
+        ThirdPartyTxUrls,       // QString
         Language,               // QString
         CoinControlFeatures,    // bool
         ThreadsScriptVerif,     // int
@@ -56,6 +57,7 @@ class OptionsModel : public QAbstractListModel
     bool getMinimizeOnClose() { return fMinimizeOnClose; }
     int getDisplayUnit() { return nDisplayUnit; }
     bool getDisplayAddresses() { return bDisplayAddresses; }
+    QString getThirdPartyTxUrls() { return strThirdPartyTxUrls; }
     bool getProxySettings(QNetworkProxy& proxy) const;
     bool getCoinControlFeatures() { return fCoinControlFeatures; }
     const QString& getOverriddenByCommandLine() { return strOverriddenByCommandLine; }
@@ -71,6 +73,7 @@ class OptionsModel : public QAbstractListModel
     QString language;
     int nDisplayUnit;
     bool bDisplayAddresses;
+    QString strThirdPartyTxUrls;
     bool fCoinControlFeatures;
     /* settings that were overriden by command-line */
     QString strOverriddenByCommandLine;

src/qt/transactiontablemodel.cpp

@@ -564,6 +564,8 @@ QVariant TransactionTableModel::data(const QModelIndex &index, int role) const
         return rec->credit + rec->debit;
     case TxIDRole:
         return rec->getTxID();
+    case TxHashRole:
+        return QString::fromStdString(rec->hash.ToString());
     case ConfirmedRole:
         return rec->status.countsForBalance;
     case FormattedAmountRole:

src/qt/transactiontablemodel.h

@@ -50,6 +50,8 @@ class TransactionTableModel : public QAbstractTableModel
         AmountRole,
         /** Unique identifier */
         TxIDRole,
+        /** Transaction hash */
+        TxHashRole,
         /** Is transaction confirmed? */
         ConfirmedRole,
         /** Formatted amount, without brackets when unconfirmed */

src/qt/transactionview.cpp

@@ -20,6 +20,7 @@
 
 #include <QComboBox>
 #include <QDateTimeEdit>
+#include <QDesktopServices>
 #include <QDoubleValidator>
 #include <QHBoxLayout>
 #include <QHeaderView>
@@ -28,7 +29,9 @@
 #include <QMenu>
 #include <QPoint>
 #include <QScrollBar>
+#include <QSignalMapper>
 #include <QTableView>
+#include <QUrl>
 #include <QVBoxLayout>
 
 TransactionView::TransactionView(QWidget *parent) :
@@ -138,7 +141,11 @@ TransactionView::TransactionView(QWidget *parent) :
     contextMenu->addAction(editLabelAction);
     contextMenu->addAction(showDetailsAction);
 
+    mapperThirdPartyTxUrls = new QSignalMapper(this);
+
     // Connect actions
+    connect(mapperThirdPartyTxUrls, SIGNAL(mapped(QString)), this, SLOT(openThirdPartyTxUrl(QString)));
+
     connect(dateWidget, SIGNAL(activated(int)), this, SLOT(chooseDate(int)));
     connect(typeWidget, SIGNAL(activated(int)), this, SLOT(chooseType(int)));
     connect(addressWidget, SIGNAL(textChanged(QString)), this, SLOT(changedPrefix(QString)));
@@ -183,6 +190,25 @@ void TransactionView::setModel(WalletModel *model)
         transactionView->setColumnWidth(TransactionTableModel::Amount, AMOUNT_MINIMUM_COLUMN_WIDTH);
 
         columnResizingFixer = new GUIUtil::TableViewLastColumnResizingFixer(transactionView, AMOUNT_MINIMUM_COLUMN_WIDTH, MINIMUM_COLUMN_WIDTH);
+
+        if (model->getOptionsModel())
+        {
+            // Add third party transaction URLs to context menu
+            QStringList listUrls = model->getOptionsModel()->getThirdPartyTxUrls().split("|", QString::SkipEmptyParts);
+            for (int i = 0; i < listUrls.size(); ++i)
+            {
+                QString host = QUrl(listUrls[i].trimmed(), QUrl::StrictMode).host();
+                if (!host.isEmpty())
+                {
+                    QAction *thirdPartyTxUrlAction = new QAction(host, this); // use host as menu item label
+                    if (i == 0)
+                        contextMenu->addSeparator();
+                    contextMenu->addAction(thirdPartyTxUrlAction);
+                    connect(thirdPartyTxUrlAction, SIGNAL(triggered()), mapperThirdPartyTxUrls, SLOT(map()));
+                    mapperThirdPartyTxUrls->setMapping(thirdPartyTxUrlAction, listUrls[i].trimmed());
+                }
+            }
+        }
     }
 }
 
@@ -383,6 +409,15 @@ void TransactionView::showDetails()
     }
 }
 
+void TransactionView::openThirdPartyTxUrl(QString url)
+{
+    if(!transactionView || !transactionView->selectionModel())
+        return;
+    QModelIndexList selection = transactionView->selectionModel()->selectedRows(0);
+    if(!selection.isEmpty())
+         QDesktopServices::openUrl(QUrl::fromUserInput(url.replace("%s", selection.at(0).data(TransactionTableModel::TxHashRole).toString())));
+}
+
 QWidget *TransactionView::createDateRangeWidget()
 {
     dateRangeWidget = new QFrame();

src/qt/transactionview.h

@@ -19,6 +19,7 @@ class QFrame;
 class QLineEdit;
 class QMenu;
 class QModelIndex;
+class QSignalMapper;
 class QTableView;
 QT_END_NAMESPACE
 
@@ -65,6 +66,7 @@ class TransactionView : public QWidget
     QLineEdit *amountWidget;
 
     QMenu *contextMenu;
+    QSignalMapper *mapperThirdPartyTxUrls;
 
     QFrame *dateRangeWidget;
     QDateTimeEdit *dateFrom;
@@ -85,6 +87,7 @@ private slots:
     void copyLabel();
     void copyAmount();
     void copyTxID();
+    void openThirdPartyTxUrl(QString url);
 
 signals:
     void doubleClicked(const QModelIndex&);