aboutsummaryrefslogtreecommitdiff
path: root/src/qt/rpcconsole.cpp
blob: 0f78288542f250e772dcfcb64107b4e0176f2ad4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
#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 <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
    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),
    historyPtr(0)
{
    ui->setupUi(this);

#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);

    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());
        ui->startupTime->setText(model->formatClientStartupTime().toString());

        setNumConnections(model->getNumConnections());
        ui->isTestNet->setChecked(model->isTestNet());

        setNumBlocks(model->getNumBlocks());
    }
}

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>"
                          "Use up and down arrows to navigate history, and <b>Ctrl-L</b> to clear screen.<br>"
                          "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)
{
    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::on_tabWidget_currentChanged(int index)
{
    if(ui->tabWidget->widget(index) == ui->tab_console)
    {
        ui->lineEdit->setFocus();
    }
}

void RPCConsole::on_openDebugLogfileButton_clicked()
{
    GUIUtil::openDebugLogfile();
}