Merge bitcoin-core#13: Hide peer detail view if multiple are selected

76277cc qt: Hide peer detail view if multiple are selected (João Barbosa)

Pull request description:

  Currently if multiple peers are selected the peer detail view shows the first new selected peer.

  With this PR the peer detail view is hidden when multiple peers are selected. It is also a slight refactor to simplify and remove duplicate code.

ACKs for top commit:
  jonasschnelli:
    Tested ACK 76277cc.
  hebasto:
    ACK 76277cc, tested on Linux Mint 20 (Qt 5.12.8).

Tree-SHA512: 16c9cfd6ccb7077a9f31917a6cb3532e32d17d21f735e43bf4720fb0c8bb1bd539d42569c105df4b551f5dccb4acaeedb6bb2362620a9cb9267a602d9d065b9f

Author: jonasschnelli

src/qt/rpcconsole.cpp

@@ -487,9 +487,7 @@ RPCConsole::RPCConsole(interfaces::Node& node, const PlatformStyle *_platformSty
     m_node.rpcSetTimerInterfaceIfUnset(rpcTimerInterface);
 
     setTrafficGraphRange(INITIAL_TRAFFIC_GRAPH_MINS);
-
-    ui->detailWidget->hide();
-    ui->peerHeading->setText(tr("Select a peer to view detailed information."));
+    updateDetailWidget();
 
     consoleFontSize = settings.value(fontSizeSettingsKey, QFont().pointSize()).toInt();
     clear();
@@ -620,7 +618,7 @@ void RPCConsole::setClientModel(ClientModel *model, int bestblock_height, int64_
         connect(disconnectAction, &QAction::triggered, this, &RPCConsole::disconnectSelectedNode);
 
         // peer table signal handling - update peer details when selecting new node
-        connect(ui->peerWidget->selectionModel(), &QItemSelectionModel::selectionChanged, this, &RPCConsole::peerSelected);
+        connect(ui->peerWidget->selectionModel(), &QItemSelectionModel::selectionChanged, this, &RPCConsole::updateDetailWidget);
         // peer table signal handling - update peer details when new nodes are added to the model
         connect(model->getPeerTableModel(), &PeerTableModel::layoutChanged, this, &RPCConsole::peerLayoutChanged);
         // peer table signal handling - cache selected node ids
@@ -1015,18 +1013,6 @@ void RPCConsole::updateTrafficStats(quint64 totalBytesIn, quint64 totalBytesOut)
     ui->lblBytesOut->setText(GUIUtil::formatBytes(totalBytesOut));
 }
 
-void RPCConsole::peerSelected(const QItemSelection &selected, const QItemSelection &deselected)
-{
-    Q_UNUSED(deselected);
-
-    if (!clientModel || !clientModel->getPeerTableModel() || selected.indexes().isEmpty())
-        return;
-
-    const CNodeCombinedStats *stats = clientModel->getPeerTableModel()->getNodeStats(selected.indexes().first().row());
-    if (stats)
-        updateNodeDetail(stats);
-}
-
 void RPCConsole::peerLayoutAboutToChange()
 {
     QModelIndexList selected = ui->peerWidget->selectionModel()->selectedIndexes();
@@ -1043,7 +1029,6 @@ void RPCConsole::peerLayoutChanged()
     if (!clientModel || !clientModel->getPeerTableModel())
         return;
 
-    const CNodeCombinedStats *stats = nullptr;
     bool fUnselect = false;
     bool fReselect = false;
 
@@ -1074,9 +1059,6 @@ void RPCConsole::peerLayoutChanged()
             fUnselect = true;
             fReselect = true;
         }
-
-        // get fresh stats on the detail node.
-        stats = clientModel->getPeerTableModel()->getNodeStats(detailNodeRow);
     }
 
     if (fUnselect && selectedRow >= 0) {
@@ -1091,12 +1073,20 @@ void RPCConsole::peerLayoutChanged()
         }
     }
 
-    if (stats)
-        updateNodeDetail(stats);
+    updateDetailWidget();
 }
 
-void RPCConsole::updateNodeDetail(const CNodeCombinedStats *stats)
+void RPCConsole::updateDetailWidget()
 {
+    QModelIndexList selected_rows;
+    auto selection_model = ui->peerWidget->selectionModel();
+    if (selection_model) selected_rows = selection_model->selectedRows();
+    if (!clientModel || !clientModel->getPeerTableModel() || selected_rows.size() != 1) {
+        ui->detailWidget->hide();
+        ui->peerHeading->setText(tr("Select a peer to view detailed information."));
+        return;
+    }
+    const CNodeCombinedStats *stats = clientModel->getPeerTableModel()->getNodeStats(selected_rows.first().row());
     // update the detail ui with latest node information
     QString peerAddrDetails(QString::fromStdString(stats->nodeStats.addrName) + " ");
     peerAddrDetails += tr("(node id: %1)").arg(QString::number(stats->nodeStats.nodeid));
@@ -1254,8 +1244,7 @@ void RPCConsole::clearSelectedNode()
 {
     ui->peerWidget->selectionModel()->clearSelection();
     cachedNodeids.clear();
-    ui->detailWidget->hide();
-    ui->peerHeading->setText(tr("Select a peer to view detailed information."));
+    updateDetailWidget();
 }
 
 void RPCConsole::showOrHideBanTableIfRequired()

src/qt/rpcconsole.h

@@ -95,6 +95,8 @@ private Q_SLOTS:
     void showOrHideBanTableIfRequired();
     /** clear the selected node */
     void clearSelectedNode();
+    /** show detailed information on ui about selected node */
+    void updateDetailWidget();
 
 public Q_SLOTS:
     void clear(bool clearHistory = true);
@@ -116,8 +118,6 @@ public Q_SLOTS:
     void browseHistory(int offset);
     /** Scroll console view to end */
     void scrollToEnd();
-    /** Handle selection of peer in peers list */
-    void peerSelected(const QItemSelection &selected, const QItemSelection &deselected);
     /** Handle selection caching before update */
     void peerLayoutAboutToChange();
     /** Handle updated peer information */
@@ -138,8 +138,6 @@ public Q_SLOTS:
 private:
     void startExecutor();
     void setTrafficGraphRange(int mins);
-    /** show detailed information on ui about selected node */
-    void updateNodeDetail(const CNodeCombinedStats *stats);
 
     enum ColumnWidths
     {