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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 <QUrl>
#include <QScrollBar>
#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;
const QSize ICON_SIZE(24, 24);
const struct {
const char *url;
const char *source;
} ICON_MAPPING[] = {
{"cmd-request", ":/icons/tx_input"},
{"cmd-reply", ":/icons/tx_output"},
{"cmd-error", ":/icons/tx_output"},
{"misc", ":/icons/tx_inout"},
{NULL, NULL}
};
/* 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
std::string strMethod;
std::vector<std::string> strParams;
try {
boost::escaped_list_separator<char> els('\\',' ','\"');
std::string strCommand = command.toStdString();
boost::tokenizer<boost::escaped_list_separator<char> > tok(strCommand, els);
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);
}
}
catch(boost::escaped_list_error &e)
{
emit reply(RPCConsole::CMD_ERROR, QString("Parse error"));
return;
}
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),
historyPtr(0)
{
ui->setupUi(this);
#ifndef Q_WS_MAC
ui->openDebugLogfileButton->setIcon(QIcon(":/icons/export"));
ui->showCLOptionsButton->setIcon(QIcon(":/icons/options"));
#endif
// Install event filter for up and down arrow
ui->lineEdit->installEventFilter(this);
connect(ui->clearButton, SIGNAL(clicked()), this, SLOT(clear()));
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,int)), this, SLOT(setNumBlocks(int,int)));
// Provide initial values
ui->clientVersion->setText(model->formatFullVersion());
ui->clientName->setText(model->clientName());
ui->buildDate->setText(model->formatBuildDate());
ui->startupTime->setText(model->formatClientStartupTime());
setNumConnections(model->getNumConnections());
ui->isTestNet->setChecked(model->isTestNet());
setNumBlocks(model->getNumBlocks(), model->getNumBlocksOfPeers());
}
}
static QString categoryClass(int category)
{
switch(category)
{
case RPCConsole::CMD_REQUEST: return "cmd-request"; break;
case RPCConsole::CMD_REPLY: return "cmd-reply"; break;
case RPCConsole::CMD_ERROR: return "cmd-error"; break;
default: return "misc";
}
}
void RPCConsole::clear()
{
ui->messagesWidget->clear();
ui->lineEdit->clear();
ui->lineEdit->setFocus();
// Add smoothly scaled icon images.
// (when using width/height on an img, Qt uses nearest instead of linear interpolation)
for(int i=0; ICON_MAPPING[i].url; ++i)
{
ui->messagesWidget->document()->addResource(
QTextDocument::ImageResource,
QUrl(ICON_MAPPING[i].url),
QImage(ICON_MAPPING[i].source).scaled(ICON_SIZE, Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
}
// Set default style sheet
ui->messagesWidget->document()->setDefaultStyleSheet(
"table { }"
"td.time { color: #808080; padding-top: 3px; } "
"td.message { font-family: Monospace; font-size: 12px; } "
"td.cmd-request { color: #006060; } "
"td.cmd-error { color: red; } "
"b { color: #006060; } "
);
message(CMD_REPLY, (tr("Welcome to the Bitcoin RPC console.") + "<br>" +
tr("Use up and down arrows to navigate history, and <b>Ctrl-L</b> to clear screen.") + "<br>" +
tr("Type <b>help</b> for an overview of available commands.")), true);
}
void RPCConsole::message(int category, const QString &message, bool html)
{
QTime time = QTime::currentTime();
QString timeString = time.toString();
QString out;
out += "<table><tr><td class=\"time\" width=\"65\">" + timeString + "</td>";
out += "<td class=\"icon\" width=\"32\"><img src=\"" + categoryClass(category) + "\"></td>";
out += "<td class=\"message " + categoryClass(category) + "\" valign=\"middle\">";
if(html)
out += message;
else
out += GUIUtil::HtmlEscape(message, true);
out += "</td></tr></table>";
ui->messagesWidget->append(out);
}
void RPCConsole::setNumConnections(int count)
{
ui->numberOfConnections->setText(QString::number(count));
}
void RPCConsole::setNumBlocks(int count, int countOfPeers)
{
ui->numberOfBlocks->setText(QString::number(count));
ui->totalBlocks->setText(QString::number(countOfPeers));
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();
// Scroll console view to end
scrollToEnd();
}
}
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::on_tabWidget_currentChanged(int index)
{
if(ui->tabWidget->widget(index) == ui->tab_console)
{
ui->lineEdit->setFocus();
}
}
void RPCConsole::on_openDebugLogfileButton_clicked()
{
GUIUtil::openDebugLogfile();
}
void RPCConsole::scrollToEnd()
{
QScrollBar *scrollbar = ui->messagesWidget->verticalScrollBar();
scrollbar->setValue(scrollbar->maximum());
}
void RPCConsole::on_showCLOptionsButton_clicked()
{
GUIUtil::HelpMessageBox help;
help.exec();
}