src/qt/clientmodel.cpp
#include "clientmodel.h"
#include "guiconstants.h"
#include "optionsmodel.h"
#include "peertablemodel.h"
#include "addresstablemodel.h"
#include "transactiontablemodel.h"
#include "alert.h"
#include "main.h"
#include "ui_interface.h"
#include <QDateTime>
#include <QTimer>
static const int64_t nClientStartupTime = GetTime();
ClientModel::ClientModel(OptionsModel *optionsModel, QObject *parent) :
QObject(parent), optionsModel(optionsModel),
cachedNumBlocks(0), cachedNumBlocksOfPeers(0), pollTimer(0)
{
peerTableModel = new PeerTableModel(this);
numBlocksAtStartup = -1;
pollTimer = new QTimer(this);
pollTimer->setInterval(MODEL_UPDATE_DELAY);
pollTimer->start();
connect(pollTimer, SIGNAL(timeout()), this, SLOT(updateTimer()));
subscribeToCoreSignals();
}
ClientModel::~ClientModel()
{
unsubscribeFromCoreSignals();
}
int ClientModel::getNumConnections(unsigned int flags) const
{
LOCK(cs_vNodes);
if (flags == CONNECTIONS_ALL) // Shortcut if we want total
return vNodes.size();
int nNum = 0;
BOOST_FOREACH(CNode* pnode, vNodes)
if (flags & (pnode->fInbound ? CONNECTIONS_IN : CONNECTIONS_OUT))
nNum++;
return nNum;
}
int ClientModel::getNumBlocks() const
{
LOCK(cs_main);
return nBestHeight;
}
int ClientModel::getNumBlocksAtStartup()
{
if (numBlocksAtStartup == -1)
numBlocksAtStartup = getNumBlocks();
return numBlocksAtStartup;
}
quint64 ClientModel::getTotalBytesRecv() const
{
return CNode::GetTotalBytesRecv();
}
quint64 ClientModel::getTotalBytesSent() const
{
return CNode::GetTotalBytesSent();
}
QDateTime ClientModel::getLastBlockDate() const
{
LOCK(cs_main);
if (pindexBest)
return QDateTime::fromTime_t(pindexBest->GetBlockTime());
else
return QDateTime::fromTime_t(GENESIS_BLOCK_TIME);
}
QDateTime ClientModel::getLastBlockThinDate() const
{
LOCK(cs_main);
if (pindexBestHeader)
return QDateTime::fromTime_t(pindexBestHeader->GetBlockTime());
else
return QDateTime::fromTime_t(GENESIS_BLOCK_TIME);
}
void ClientModel::updateTimer()
{
// Get required lock upfront. This avoids the GUI from getting stuck on
// periodical polls if the core is holding the locks for a longer time -
// for example, during a wallet rescan.
TRY_LOCK(cs_main, lockMain);
if(!lockMain)
return;
// Some quantities (such as number of blocks) change so fast that we don't want to be notified for each change.
// Periodically check and update with a timer.
int newNumBlocks = getNumBlocks();
int newNumBlocksOfPeers = getNumBlocksOfPeers();
if (cachedNumBlocks != newNumBlocks
|| cachedNumBlocksOfPeers != newNumBlocksOfPeers
|| nNodeState == NS_GET_FILTERED_BLOCKS)
{
cachedNumBlocks = newNumBlocks;
cachedNumBlocksOfPeers = newNumBlocksOfPeers;
emit numBlocksChanged(newNumBlocks, newNumBlocksOfPeers);
}
emit bytesChanged(getTotalBytesRecv(), getTotalBytesSent());
}
void ClientModel::updateNumConnections(int numConnections)
{
emit numConnectionsChanged(numConnections);
}
void ClientModel::updateAlert(const QString &hash, int status)
{
// Show error message notification for new alert
if (status == CT_NEW)
{
uint256 hash_256;
hash_256.SetHex(hash.toStdString());
CAlert alert = CAlert::getAlertByHash(hash_256);
if (!alert.IsNull())
{
emit error(tr("Network Alert"), QString::fromStdString(alert.strStatusBar), false);
};
};
// Emit a numBlocksChanged when the status message changes,
// so that the view recomputes and updates the status bar.
emit numBlocksChanged(getNumBlocks(), getNumBlocksOfPeers());
}
bool ClientModel::isTestNet() const
{
return fTestNet;
}
int ClientModel::getClientMode() const
{
return nNodeMode;
}
bool ClientModel::inInitialBlockDownload() const
{
return IsInitialBlockDownload();
}
int ClientModel::getNumBlocksOfPeers() const
{
return GetNumBlocksOfPeers();
}
bool ClientModel::isImporting() const
{
return fImporting;
}
QString ClientModel::getStatusBarWarnings() const
{
return QString::fromStdString(GetWarnings("statusbar"));
}
OptionsModel *ClientModel::getOptionsModel()
{
return optionsModel;
}
PeerTableModel *ClientModel::getPeerTableModel()
{
return peerTableModel;
}
QString ClientModel::formatFullVersion() const
{
return QString::fromStdString(FormatFullVersion());
}
QString ClientModel::formatBuildDate() const
{
return QString::fromStdString(CLIENT_DATE);
}
QString ClientModel::clientName() const
{
return QString::fromStdString(CLIENT_NAME);
}
QString ClientModel::formatClientStartupTime() const
{
return QDateTime::fromTime_t(nClientStartupTime).toString();
}
// Handlers for core signals
static void NotifyBlocksChanged(ClientModel *clientmodel)
{
// This notification is too frequent. Don't trigger a signal.
// Don't remove it, though, as it might be useful later.
}
static void NotifyNumConnectionsChanged(ClientModel *clientmodel, int newNumConnections)
{
// Too noisy: LogPrintf("NotifyNumConnectionsChanged %i\n", newNumConnections);
QMetaObject::invokeMethod(clientmodel, "updateNumConnections", Qt::QueuedConnection,
Q_ARG(int, newNumConnections));
}
static void NotifyAlertChanged(ClientModel *clientmodel, const uint256 &hash, ChangeType status)
{
LogPrintf("NotifyAlertChanged %s status=%i\n", hash.GetHex().c_str(), status);
QMetaObject::invokeMethod(clientmodel, "updateAlert", Qt::QueuedConnection,
Q_ARG(QString, QString::fromStdString(hash.GetHex())),
Q_ARG(int, status));
}
void ClientModel::subscribeToCoreSignals()
{
// Connect signals to client
uiInterface.NotifyBlocksChanged.connect(boost::bind(NotifyBlocksChanged, this));
uiInterface.NotifyNumConnectionsChanged.connect(boost::bind(NotifyNumConnectionsChanged, this, _1));
uiInterface.NotifyAlertChanged.connect(boost::bind(NotifyAlertChanged, this, _1, _2));
}
void ClientModel::unsubscribeFromCoreSignals()
{
// Disconnect signals from client
uiInterface.NotifyBlocksChanged.disconnect(boost::bind(NotifyBlocksChanged, this));
uiInterface.NotifyNumConnectionsChanged.disconnect(boost::bind(NotifyNumConnectionsChanged, this, _1));
uiInterface.NotifyAlertChanged.disconnect(boost::bind(NotifyAlertChanged, this, _1, _2));
}