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#include "rpcconsole.h"
#include "ui_rpcconsole.h"
#include "clientmodel.h"
#include "bitcoinrpc.h"
#include "guiutil.h"
#include <QTime>
#include <QTimer>
#include <QThread>
#include <QTextEdit>
#include <QKeyEvent>
#include <boost/tokenizer.hpp>
// TODO: make it possible to filter out categories (esp debug messages when implemented)
// TODO: receive errors and debug messages through ClientModel
const int CONSOLE_SCROLLBACK = 50;
const int CONSOLE_HISTORY = 50;
/* Object for executing console RPC commands in a separate thread.
*/
class RPCExecutor: public QObject
{
Q_OBJECT
public slots:
void start();
void request(const QString &command);
signals:
void reply(int category, const QString &command);
};
#include "rpcconsole.moc"
void RPCExecutor::start()
{
// Nothing to do
}
void RPCExecutor::request(const QString &command)
{
// Parse shell-like command line into separate arguments
boost::escaped_list_separator<char> els('\\',' ','\"');
std::string strCommand = command.toStdString();
boost::tokenizer<boost::escaped_list_separator<char> > tok(strCommand, els);
std::string strMethod;
std::vector<std::string> strParams;
int n = 0;
for(boost::tokenizer<boost::escaped_list_separator<char> >::iterator beg=tok.begin(); beg!=tok.end();++beg,++n)
{
if(n == 0) // First parameter is the command
strMethod = *beg;
else
strParams.push_back(*beg);
}
try {
std::string strPrint;
json_spirit::Value result = tableRPC.execute(strMethod, RPCConvertValues(strMethod, strParams));
// Format result reply
if (result.type() == json_spirit::null_type)
strPrint = "";
else if (result.type() == json_spirit::str_type)
strPrint = result.get_str();
else
strPrint = write_string(result, true);
emit reply(RPCConsole::CMD_REPLY, QString::fromStdString(strPrint));
}
catch (json_spirit::Object& objError)
{
emit reply(RPCConsole::CMD_ERROR, QString::fromStdString(write_string(json_spirit::Value(objError), false)));
}
catch (std::exception& e)
{
emit reply(RPCConsole::CMD_ERROR, QString("Error: ") + QString::fromStdString(e.what()));
}
}
RPCConsole::RPCConsole(QWidget *parent) :
QDialog(parent),
ui(new Ui::RPCConsole),
firstLayout(true),
historyPtr(0)
{
ui->setupUi(this);
ui->messagesWidget->horizontalHeader()->setResizeMode(1, QHeaderView::Stretch);
ui->messagesWidget->setContextMenuPolicy(Qt::ActionsContextMenu);
#ifndef WIN32
// Show Debug logfile label and Open button only for Windows
ui->labelDebugLogfile->setVisible(false);
ui->openDebugLogfileButton->setVisible(false);
#endif
// Install event filter for up and down arrow
ui->lineEdit->installEventFilter(this);
// Add "Copy message" to context menu explicitly
QAction *copyMessageAction = new QAction(tr("&Copy"), this);
copyMessageAction->setShortcut(QKeySequence(Qt::CTRL | Qt::Key_C));
copyMessageAction->setShortcutContext(Qt::WidgetShortcut);
connect(copyMessageAction, SIGNAL(triggered()), this, SLOT(copyMessage()));
ui->messagesWidget->addAction(copyMessageAction);
connect(ui->clearButton, SIGNAL(clicked()), this, SLOT(clear()));
connect(ui->openDebugLogfileButton, SIGNAL(clicked()), this, SLOT(on_openDebugLogfileButton_clicked()));
startExecutor();
clear();
}
RPCConsole::~RPCConsole()
{
emit stopExecutor();
delete ui;
}
bool RPCConsole::eventFilter(QObject* obj, QEvent *event)
{
if(obj == ui->lineEdit)
{
if(event->type() == QEvent::KeyPress)
{
QKeyEvent *key = static_cast<QKeyEvent*>(event);
switch(key->key())
{
case Qt::Key_Up: browseHistory(-1); return true;
case Qt::Key_Down: browseHistory(1); return true;
}
}
}
return QDialog::eventFilter(obj, event);
}
void RPCConsole::setClientModel(ClientModel *model)
{
this->clientModel = model;
if(model)
{
// Subscribe to information, replies, messages, errors
connect(model, SIGNAL(numConnectionsChanged(int)), this, SLOT(setNumConnections(int)));
connect(model, SIGNAL(numBlocksChanged(int)), this, SLOT(setNumBlocks(int)));
// Provide initial values
ui->clientVersion->setText(model->formatFullVersion());
ui->clientName->setText(model->clientName());
ui->buildDate->setText(model->formatBuildDate());
setNumConnections(model->getNumConnections());
ui->isTestNet->setChecked(model->isTestNet());
setNumBlocks(model->getNumBlocks());
}
}
static QColor categoryColor(int category)
{
switch(category)
{
case RPCConsole::MC_ERROR: return QColor(255,0,0); break;
case RPCConsole::MC_DEBUG: return QColor(192,192,192); break;
case RPCConsole::CMD_REQUEST: return QColor(128,128,128); break;
case RPCConsole::CMD_REPLY: return QColor(128,255,128); break;
case RPCConsole::CMD_ERROR: return QColor(255,128,128); break;
default: return QColor(0,0,0);
}
}
void RPCConsole::clear()
{
ui->messagesWidget->clear();
ui->messagesWidget->setRowCount(0);
ui->lineEdit->clear();
ui->lineEdit->setFocus();
message(CMD_REPLY, tr("Welcome to the bitcoin RPC console.")+"\n"+
tr("Use up and down arrows to navigate history, and Ctrl-L to clear screen.")+"\n"+
tr("Type \"help\" for an overview of available commands."));
}
void RPCConsole::message(int category, const QString &message)
{
// Add row to messages widget
int row = ui->messagesWidget->rowCount();
ui->messagesWidget->setRowCount(row+1);
QTime time = QTime::currentTime();
QTableWidgetItem *newTime = new QTableWidgetItem(time.toString());
newTime->setData(Qt::DecorationRole, categoryColor(category));
newTime->setForeground(QColor(128,128,128));
newTime->setFlags(Qt::ItemIsSelectable|Qt::ItemIsEnabled); // make non-editable
int numLines = message.count("\n") + 1;
// As Qt doesn't like very tall cells (they break scrolling) keep only short messages in
// the cell text, longer messages trigger a display widget with scroll bar
if(numLines < 5)
{
QTableWidgetItem *newItem = new QTableWidgetItem(message);
newItem->setFlags(Qt::ItemIsSelectable|Qt::ItemIsEnabled); // make non-editable
if(category == CMD_ERROR) // Coloring error messages in red
newItem->setForeground(QColor(255,16,16));
ui->messagesWidget->setItem(row, 1, newItem);
} else {
QTextEdit *newWidget = new QTextEdit;
newWidget->setText(message);
newWidget->setMaximumHeight(100);
newWidget->setReadOnly(true);
ui->messagesWidget->setCellWidget(row, 1, newWidget);
}
ui->messagesWidget->setItem(row, 0, newTime);
ui->messagesWidget->resizeRowToContents(row);
// Preserve only limited scrollback buffer
while(ui->messagesWidget->rowCount() > CONSOLE_SCROLLBACK)
ui->messagesWidget->removeRow(0);
// Scroll to bottom after table is updated
QTimer::singleShot(0, ui->messagesWidget, SLOT(scrollToBottom()));
}
void RPCConsole::setNumConnections(int count)
{
ui->numberOfConnections->setText(QString::number(count));
}
void RPCConsole::setNumBlocks(int count)
{
ui->numberOfBlocks->setText(QString::number(count));
if(clientModel)
{
// If there is no current number available display N/A instead of 0, which can't ever be true
ui->totalBlocks->setText(clientModel->getNumBlocksOfPeers() == 0 ? tr("N/A") : QString::number(clientModel->getNumBlocksOfPeers()));
ui->lastBlockTime->setText(clientModel->getLastBlockDate().toString());
}
}
void RPCConsole::on_lineEdit_returnPressed()
{
QString cmd = ui->lineEdit->text();
ui->lineEdit->clear();
if(!cmd.isEmpty())
{
message(CMD_REQUEST, cmd);
emit cmdRequest(cmd);
// Truncate history from current position
history.erase(history.begin() + historyPtr, history.end());
// Append command to history
history.append(cmd);
// Enforce maximum history size
while(history.size() > CONSOLE_HISTORY)
history.removeFirst();
// Set pointer to end of history
historyPtr = history.size();
}
}
void RPCConsole::browseHistory(int offset)
{
historyPtr += offset;
if(historyPtr < 0)
historyPtr = 0;
if(historyPtr > history.size())
historyPtr = history.size();
QString cmd;
if(historyPtr < history.size())
cmd = history.at(historyPtr);
ui->lineEdit->setText(cmd);
}
void RPCConsole::startExecutor()
{
QThread* thread = new QThread;
RPCExecutor *executor = new RPCExecutor();
executor->moveToThread(thread);
// Notify executor when thread started (in executor thread)
connect(thread, SIGNAL(started()), executor, SLOT(start()));
// Replies from executor object must go to this object
connect(executor, SIGNAL(reply(int,QString)), this, SLOT(message(int,QString)));
// Requests from this object must go to executor
connect(this, SIGNAL(cmdRequest(QString)), executor, SLOT(request(QString)));
// On stopExecutor signal
// - queue executor for deletion (in execution thread)
// - quit the Qt event loop in the execution thread
connect(this, SIGNAL(stopExecutor()), executor, SLOT(deleteLater()));
connect(this, SIGNAL(stopExecutor()), thread, SLOT(quit()));
// Queue the thread for deletion (in this thread) when it is finished
connect(thread, SIGNAL(finished()), thread, SLOT(deleteLater()));
// Default implementation of QThread::run() simply spins up an event loop in the thread,
// which is what we want.
thread->start();
}
void RPCConsole::copyMessage()
{
GUIUtil::copyEntryData(ui->messagesWidget, 1, Qt::EditRole);
}
void RPCConsole::on_tabWidget_currentChanged(int index)
{
if(ui->tabWidget->widget(index) == ui->tab_console)
{
if(firstLayout)
{
// Work around QTableWidget issue:
// Call resizeRowsToContents on first Layout request with widget visible,
// to make sure multiline messages that were added before the console was shown
// have the right height.
firstLayout = false;
ui->messagesWidget->resizeRowsToContents();
}
ui->lineEdit->setFocus();
}
}
void RPCConsole::on_openDebugLogfileButton_clicked()
{
GUIUtil::openDebugLogfile();
}