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// Copyright (c) 2011-2020 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <qt/peertablemodel.h>
#include <qt/guiconstants.h>
#include <qt/guiutil.h>
#include <interfaces/node.h>
#include <utility>
#include <QList>
#include <QTimer>
PeerTableModel::PeerTableModel(interfaces::Node& node, QObject* parent) :
QAbstractTableModel(parent),
m_node(node),
timer(nullptr)
{
// set up timer for auto refresh
timer = new QTimer(this);
connect(timer, &QTimer::timeout, this, &PeerTableModel::refresh);
timer->setInterval(MODEL_UPDATE_DELAY);
// load initial data
refresh();
}
PeerTableModel::~PeerTableModel()
{
// Intentionally left empty
}
void PeerTableModel::startAutoRefresh()
{
timer->start();
}
void PeerTableModel::stopAutoRefresh()
{
timer->stop();
}
int PeerTableModel::rowCount(const QModelIndex& parent) const
{
if (parent.isValid()) {
return 0;
}
return m_peers_data.size();
}
int PeerTableModel::columnCount(const QModelIndex& parent) const
{
if (parent.isValid()) {
return 0;
}
return columns.length();
}
QVariant PeerTableModel::data(const QModelIndex& index, int role) const
{
if(!index.isValid())
return QVariant();
CNodeCombinedStats *rec = static_cast<CNodeCombinedStats*>(index.internalPointer());
const auto column = static_cast<ColumnIndex>(index.column());
if (role == Qt::DisplayRole) {
switch (column) {
case NetNodeId:
return (qint64)rec->nodeStats.nodeid;
case Address:
// prepend to peer address down-arrow symbol for inbound connection and up-arrow for outbound connection
return QString::fromStdString((rec->nodeStats.fInbound ? "↓ " : "↑ ") + rec->nodeStats.addrName);
case ConnectionType:
return GUIUtil::ConnectionTypeToQString(rec->nodeStats.m_conn_type, /* prepend_direction */ false);
case Network:
return GUIUtil::NetworkToQString(rec->nodeStats.m_network);
case Ping:
return GUIUtil::formatPingTime(rec->nodeStats.m_min_ping_time);
case Sent:
return GUIUtil::formatBytes(rec->nodeStats.nSendBytes);
case Received:
return GUIUtil::formatBytes(rec->nodeStats.nRecvBytes);
case Subversion:
return QString::fromStdString(rec->nodeStats.cleanSubVer);
} // no default case, so the compiler can warn about missing cases
assert(false);
} else if (role == Qt::TextAlignmentRole) {
switch (column) {
case NetNodeId:
return QVariant(Qt::AlignRight | Qt::AlignVCenter);
case Address:
return {};
case ConnectionType:
case Network:
return QVariant(Qt::AlignCenter);
case Ping:
case Sent:
case Received:
return QVariant(Qt::AlignRight | Qt::AlignVCenter);
case Subversion:
return {};
} // no default case, so the compiler can warn about missing cases
assert(false);
} else if (role == StatsRole) {
return QVariant::fromValue(rec);
}
return QVariant();
}
QVariant PeerTableModel::headerData(int section, Qt::Orientation orientation, int role) const
{
if(orientation == Qt::Horizontal)
{
if(role == Qt::DisplayRole && section < columns.size())
{
return columns[section];
}
}
return QVariant();
}
Qt::ItemFlags PeerTableModel::flags(const QModelIndex &index) const
{
if (!index.isValid()) return Qt::NoItemFlags;
Qt::ItemFlags retval = Qt::ItemIsSelectable | Qt::ItemIsEnabled;
return retval;
}
QModelIndex PeerTableModel::index(int row, int column, const QModelIndex& parent) const
{
Q_UNUSED(parent);
if (0 <= row && row < rowCount() && 0 <= column && column < columnCount()) {
return createIndex(row, column, const_cast<CNodeCombinedStats*>(&m_peers_data[row]));
}
return QModelIndex();
}
void PeerTableModel::refresh()
{
interfaces::Node::NodesStats nodes_stats;
m_node.getNodesStats(nodes_stats);
decltype(m_peers_data) new_peers_data;
new_peers_data.reserve(nodes_stats.size());
for (const auto& node_stats : nodes_stats) {
const CNodeCombinedStats stats{std::get<0>(node_stats), std::get<2>(node_stats), std::get<1>(node_stats)};
new_peers_data.append(stats);
}
// Handle peer addition or removal as suggested in Qt Docs. See:
// - https://doc.qt.io/qt-5/model-view-programming.html#inserting-and-removing-rows
// - https://doc.qt.io/qt-5/model-view-programming.html#resizable-models
// We take advantage of the fact that the std::vector returned
// by interfaces::Node::getNodesStats is sorted by nodeid.
for (int i = 0; i < m_peers_data.size();) {
if (i < new_peers_data.size() && m_peers_data.at(i).nodeStats.nodeid == new_peers_data.at(i).nodeStats.nodeid) {
++i;
continue;
}
// A peer has been removed from the table.
beginRemoveRows(QModelIndex(), i, i);
m_peers_data.erase(m_peers_data.begin() + i);
endRemoveRows();
}
if (m_peers_data.size() < new_peers_data.size()) {
// Some peers have been added to the end of the table.
beginInsertRows(QModelIndex(), m_peers_data.size(), new_peers_data.size() - 1);
m_peers_data.swap(new_peers_data);
endInsertRows();
} else {
m_peers_data.swap(new_peers_data);
}
const auto top_left = index(0, 0);
const auto bottom_right = index(rowCount() - 1, columnCount() - 1);
Q_EMIT dataChanged(top_left, bottom_right);
}
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