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ConsoleEdit.cpp
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ConsoleEdit.cpp
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/*
pqConsole : interfacing SWI-Prolog and Qt
Author : Carlo Capelli
E-mail : cc.carlo.cap@gmail.com
Copyright (C): 2013,2014 Carlo Capelli
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <SWI-Stream.h>
#include "Swipl_IO.h"
#include "do_events.h"
#include "PREDICATE.h"
#include "Completion.h"
#include "Preferences.h"
#include "pqMainWindow.h"
#include "pqConsole.h"
#include "blockSig.h"
#include <signal.h>
#include <QUrl>
#include <QTime>
#include <QRegExp>
#include <QtDebug>
#include <QAction>
#include <QToolTip>
#include <QKeyEvent>
#include <QMimeData>
#include <QTextBlock>
#include <QMessageBox>
#include <QMainWindow>
#include <QApplication>
#include <QStringListModel>
/** peek color by index */
static QColor ANSI2col(int c, bool highlight = false) { return Preferences::ANSI2col(c, highlight); }
/** can be disabled from ~/.plrc */
bool ConsoleEdit::color_term = true;
/** build command line interface to SWI Prolog engine
* this start the *primary* console
*/
ConsoleEdit::ConsoleEdit(int argc, char **argv, QWidget *parent)
: ConsoleEditBase(parent), io(0)
{
qApp->setWindowIcon(QIcon(":/swipl.png"));
qRegisterMetaType<pfunc>("pfunc");
setup();
eng = new SwiPrologEngine(this);
// wire up console IO
connect(eng, SIGNAL(user_output(QString)), this, SLOT(user_output(QString)));
connect(eng, SIGNAL(user_prompt(int, bool)), this, SLOT(user_prompt(int, bool)));
connect(this, SIGNAL(user_input(QString)), eng, SLOT(user_input(QString)));
connect(eng, SIGNAL(finished()), this, SLOT(eng_completed()));
// issue worker thread start
eng->start(argc, argv);
// reactive console
connect(this, SIGNAL(anchorClicked(const QUrl &)), this, SLOT(anchorClicked(const QUrl &)));
}
void ConsoleEdit::add_thread(int id) {
Q_ASSERT(id > 0);
Q_ASSERT(thids.empty());
thids.append(id);
}
/** this start an *interactor* console hosted in a QMainWindow
*/
ConsoleEdit::ConsoleEdit(Swipl_IO* io, QString title)
: ConsoleEditBase(), eng(0), io(io)
{
auto w = new QMainWindow();
w->setCentralWidget(this);
w->setWindowTitle(title);
w->show();
setup(io);
}
/** start an *interactor* console in tabbed interface
* no MainWindow to attach this
*/
ConsoleEdit::ConsoleEdit(Swipl_IO* io)
: ConsoleEditBase(), eng(0), io(io)
{
setup(io);
}
/** handle consoles list
*/
ConsoleEdit::~ConsoleEdit() {
pqConsole::removeConsole(this);
}
/** more factorization, after introducing the possibility
* of instancing in a tabbed interface
*/
void ConsoleEdit::setup(Swipl_IO* io) {
setup();
// wire up console IO
connect(io, SIGNAL(user_output(QString)), this, SLOT(user_output(QString)));
connect(io, SIGNAL(user_prompt(int, bool)), this, SLOT(user_prompt(int, bool)));
connect(this, SIGNAL(user_input(QString)), io, SLOT(user_input(QString)));
connect(io, SIGNAL(sig_eng_at_exit()), this, SLOT(eng_completed()));
io->attached(this);
}
/** common setup between =main= and =thread= console
* different setting required, due to difference in events handling
*/
void ConsoleEdit::setup() {
set_editable(true);
pqConsole::addConsole(this);
status = idle;
promptPosition = -1;
// added to handle reactive actions
parsedStart = 0; //parsedLimit = -1;
qApp->installEventFilter(this);
count_output = 0;
update_refresh_rate = 100;
preds = 0;
Preferences p;
// preset presentation attributes
output_text_fmt.setForeground(ANSI2col(p.console_out_fore));
output_text_fmt.setBackground(ANSI2col(p.console_out_back));
input_text_fmt.setForeground(ANSI2col(p.console_inp_fore));
input_text_fmt.setBackground(ANSI2col(p.console_inp_back));
//setLineWrapMode(p.wrapMode);
//setWordWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
//setLineWrapMode(WidgetWidth);
setFont(p.console_font);
connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(onCursorPositionChanged()));
connect(this, SIGNAL(sig_run_function(pfunc)), this, SLOT(run_function(pfunc)));
connect(this, SIGNAL(selectionChanged()), this, SLOT(selectionChanged()));
}
/** strict control on keyboard events required
*/
void ConsoleEdit::keyPressEvent(QKeyEvent *event) {
using namespace Qt;
//qDebug() << "keyPressEvent" << event;
QTextCursor c = textCursor();
bool on_completion = preds && preds->popup()->isVisible();
if (on_completion) {
// following keys are forwarded by the completer to the widget
switch (event->key()) {
case Key_Enter:
case Key_Return:
case Key_Escape:
case Key_Tab:
case Key_Backtab:
event->ignore();
return; // let the completer do default behavior
default:
compinit(c);
break;
}
}
bool ctrl = event->modifiers() == CTRL;
int cp = c.position(), k = event->key();
bool accept = true, ret = false, down = true, editable = (cp >= fixedPosition);
QString cmd;
switch (k) {
case Key_Help:
case Key_F1: {
QString topic;
if (!c.hasSelection())
c.select(c.WordUnderCursor);
topic = c.selectedText();
emit request_help(topic);
return;
}
case Key_Space:
if (!on_completion && ctrl && editable) {
compinit2(c);
return;
}
accept = editable;
break;
case Key_Tab:
if (ctrl) {
event->ignore(); // otherwise tab control get lost !
return;
}
if (!on_completion && !ctrl && editable) {
compinit(c);
return;
}
break;
case Key_Backtab:
// otherwise tab control get lost !
event->ignore();
return;
case Key_Home:
if (!ctrl && cp > fixedPosition) {
c.setPosition(fixedPosition, (event->modifiers() & SHIFT) ? c.KeepAnchor : c.MoveAnchor);
setTextCursor(c);
return;
}
case Key_End:
case Key_Left:
case Key_Right:
case Key_PageUp:
case Key_PageDown:
break;
case Key_Return:
ret = editable;
if (ret) {
c.movePosition(c.End);
setTextCursor(c);
}
break;
case Key_Backspace:
accept = (cp > fixedPosition);
break;
case Key_Up:
down = false;
// fall throu
case Key_Down:
if (ctrl) { //if (!ctrl) {
// naive history handler
if (editable) {
if (!history.empty()) {
c.setPosition(fixedPosition);
c.movePosition(c.End, c.KeepAnchor);
auto repc = [&](QString t) {
c.removeSelectedText();
c.insertText(t, input_text_fmt);
c.movePosition(c.End);
ensureCursorVisible();
};
if (down) {
if (history_next < history.count() - 1)
repc(history[++history_next]);
else if (history_next == history.count() - 1) {
++history_next;
repc(history_spare);
}
} else {
if (history_next == history.count()) {
history_spare = c.selectedText();
repc(history[--history_next]);
} else if (history_next > 0)
repc(history[--history_next]);
}
return;
}
}
event->ignore();
return;
}
c.movePosition(k == Key_Up ? c.Up : c.Down);
setTextCursor(c);
return;
case Key_D:
#ifdef Q_OS_DARWIN
if ((accept = editable) && event->modifiers() == META)
#else
if ((accept = editable) && ctrl)
#endif
{ qDebug() << "^D" << thids;
c.movePosition(c.End);
setTextCursor(c);
ret = true;
status = eof;
}
break;
case Key_C:
// case Key_Pause: I thought this one also work. It's not true.
if (ctrl && status == running) {
qDebug() << "^C" << thids << status;
PL_thread_raise(thids[0], SIGINT);
return;
}
// fall throu
default:
accept = editable || event->matches(QKeySequence::Copy);
// when keypressed in output area place at cursor and accept
if (!accept && !editable && !ret && !event->modifiers()) {
//!event->modifiers() == CTRL && !event->modifiers() == ALT && !event->modifiers() == SHIFT && !event->modifiers() == META) {
c.movePosition(c.End);
setTextCursor(c);
ensureCursorVisible();
if (fixedPosition > c.position())
fixedPosition = c.position();
setCurrentCharFormat(input_text_fmt);
ConsoleEditBase::keyPressEvent(event);
if (is_tty) {
cmd = event->text();
if (!cmd.isEmpty())
goto _cmd_;
}
return;
}
}
if (accept) {
setCurrentCharFormat(input_text_fmt);
ConsoleEditBase::keyPressEvent(event);
if (is_tty && c.atEnd()) {
cmd = event->text();
if (!cmd.isEmpty())
goto _cmd_;
}
if (on_completion) {
c.select(QTextCursor::WordUnderCursor);
preds->setCompletionPrefix(c.selectedText());
preds->popup()->setCurrentIndex(preds->completionModel()->index(0, 0));
}
else {
// handle ^A+Del (clear buffer)
c.movePosition(c.End);
if (fixedPosition > c.position())
fixedPosition = c.position();
}
}
if (ret) {
c.setPosition(fixedPosition);
c.movePosition(c.End, c.KeepAnchor);
cmd = c.selectedText();
if (!cmd.isEmpty()) {
cmd.replace(cmd.length() - 1, 1, '\n');
add_history_line(cmd.left(cmd.length() - 1));
}
_cmd_:
if (io)
io->take_input(cmd);
else
emit user_input(cmd);
if ( status != eof || !cmd.isEmpty() )
status = running;
}
}
/** jump to source location on warning/error messages
*/
void ConsoleEdit::mousePressEvent(QMouseEvent *e) {
QTextCursor c = cursorForPosition(e->pos());
clickable_message_line(c, false);
ConsoleEditBase::mousePressEvent(e);
// still need to experiment if actually was QTextBrowser to inhibit the feature...
#ifdef PQCONSOLE_BROWSER
if (e->button() == Qt::MiddleButton) {
if (QMimeData *d = createMimeDataFromSelection()) {
insertFromMimeData(d);
d->deleteLater();
}
}
#endif
}
/** place accepted Completer selection in editor
* very clean, after removing (useless?) customcompleter sample code
*/
void ConsoleEdit::insertCompletion(QString completion) {
int sep = completion.indexOf(" | ");
if (sep > 0) // remove description
completion = completion.left(sep);
int extra = completion.length() - preds->completionPrefix().length();
textCursor().insertText(completion.right(extra));
}
/** completion initialize
* this is the simpler setup I found so far
*/
void ConsoleEdit::compinit(QTextCursor c) {
/*/ issue setof(M,current_module(M),L)
QStringList lmods;
{ SwiPrologEngine::in_thread _it;
PlTerm M, Ms;
if (PlCall("setof", PlTermv(M, PlCompound("current_module", M), Ms)))
for (PlTail x(Ms); x.next(M); )
lmods.append(CCP(M));
}
*/
QStringList lpreds;
QString prefix = Completion::initialize(fixedPosition, c, lpreds);
if (!preds) {
preds = new t_Completion(new QStringListModel(lpreds));
preds->setWidget(this);
connect(preds, SIGNAL(activated(QString)), this, SLOT(insertCompletion(QString)));
}
else {
auto model = qobject_cast<QStringListModel*>(preds->model());
model->setStringList(lpreds);
}
preds->setCompletionPrefix(prefix);
preds->popup()->setCurrentIndex(preds->completionModel()->index(0, 0));
QRect cr = cursorRect();
cr.setWidth(300);
preds->complete(cr);
}
void ConsoleEdit::compinit2(QTextCursor c) {
QStringList atoms;
QString prefix = Completion::initialize(fixedPosition, c, atoms);
if (!preds) {
preds = new t_Completion(new QStringListModel());
preds->setWidget(this);
connect(preds, SIGNAL(activated(QString)), this, SLOT(insertCompletion(QString)));
}
QStringList lpreds;
foreach (auto a, atoms) {
auto p = Completion::pred_docs.constFind(a);
if (p != Completion::pred_docs.end())
foreach (auto d, p.value()) {
QStringList la;
for (int n = 0; n < d.first; ++n)
la.append(QString('A' + n));
if (!la.isEmpty())
lpreds.append(QString("%1(%2) | %3").arg(a).arg(la.join(", ")).arg(d.second));
else
lpreds.append(QString("%1 | %2").arg(a).arg(d.second));
}
else
lpreds.append(a);
}
auto model = qobject_cast<QStringListModel*>(preds->model());
model->setStringList(lpreds);
preds->setCompletionPrefix(prefix);
preds->popup()->setCurrentIndex(preds->completionModel()->index(0, 0));
QRect cr = cursorRect();
cr.setWidth(400);
preds->complete(cr);
}
/** handle focus event to keep QCompleter happy
*/
void ConsoleEdit::focusInEvent(QFocusEvent *e) {
if (preds)
preds->setWidget(this);
ConsoleEditBase::focusInEvent(e);
}
/** filter out insertion when cursor is not in editable position
*/
void ConsoleEdit::insertFromMimeData(const QMimeData *source) {
qDebug() << "insertFromMimeData" << source;
auto c = textCursor();
if (c.position() >= fixedPosition)
ConsoleEditBase::insertFromMimeData(source);
else {
c.movePosition(c.End);
c.insertText(source->text());
}
}
/** \brief send text to output
*
* Decode ANSI terminal sequences, to output coloured text.
* Colours encoding are (approx) derived from swipl console.
*/
void ConsoleEdit::user_output(QString text) {
#if defined(Q_OS_WIN)
text.replace("\r\n", "\n");
#endif
QTextCursor c = textCursor();
if (status == wait_input)
c.setPosition(promptPosition);
else {
promptPosition = c.position(); // save for later
c.movePosition(QTextCursor::End);
}
auto instext = [&](QString text) {
c.insertText(text, output_text_fmt);
// Jan requested extension: put messages *above* the prompt location
if (status == wait_input) {
int ltext = text.length();
promptPosition += ltext;
fixedPosition += ltext;
ensureCursorVisible();
}
};
// filter and apply (some) ANSI sequence
int pos = text.indexOf('\x1B');
if (pos >= 0) {
int left = 0;
static QRegExp eseq("\x1B\\[(?:(3([0-7]);([01])m)|(0m)|(1m;)|1;3([0-7])m|(1m)|(?:3([0-7])m))");
forever {
int pos1 = eseq.indexIn(text, pos);
if (pos1 == -1)
break;
QStringList lcap = eseq.capturedTexts();
Q_ASSERT(lcap.length() == 9); // match captures in eseq, 0 seems unrelated to paren
// put 'out-of-band' text with current attribute, before changing it
instext(text.mid(left, pos1 - left));
// map sequence to text attributes
QFont::Weight w;
QBrush c;
int skip = lcap[1].length();
if (skip) {
QString A = lcap[2], B = lcap[3];
w = QFont::Normal;
c = ANSI2col(B.toInt(), A == "1");
}
else if (!lcap[6].isNull()) {
skip = 5;
w = QFont::Bold;
c = ANSI2col(lcap[6].toInt());
}
else if ((skip = lcap[7].length()) > 0) {
w = QFont::Bold;
c = ANSI2col(0);
}
else if (!lcap[8].isNull()) {
skip = 3;
w = QFont::Normal;
c = ANSI2col(lcap[8].toInt());
}
else {
skip = lcap[4].length() + lcap[5].length();
w = QFont::Normal;
c = ANSI2col(0);
}
output_text_fmt.setFontWeight(w);
output_text_fmt.setForeground(c);
left = pos = pos1 + skip + 2; // add the SCI
}
instext(text.mid(pos));
}
else
instext(text);
linkto_message_source();
}
bool ConsoleEdit::match_thread(int thread_id) const {
return thread_id == -1 || thids.contains(thread_id);
}
/** issue an input request
*/
void ConsoleEdit::user_prompt(int threadId, bool tty) {
// attach thread IO to this console
if (!thids.contains(threadId))
thids.append(threadId);
is_tty = tty;
//Completion::helpidx();
QTextCursor c = textCursor();
c.movePosition(QTextCursor::End);
fixedPosition = c.position();
setTextCursor(c);
ensureCursorVisible();
if (status == idle)
emit engine_ready();
status = wait_input;
if (commands.count() > 0)
QTimer::singleShot(1, this, SLOT(command_do()));
linkto_message_source();
}
/** resolve error messages positions
* but delay replacement after document' block scan
*/
void ConsoleEdit::linkto_message_source() {
auto c = textCursor();
struct to_replace_pos { int pos, len; QString html; };
QList<to_replace_pos> to_replace;
// scan blocks looking for error messages
for (QTextBlock block = c.document()->findBlockByNumber(parsedStart);
block.blockNumber() < c.document()->blockCount() - 1; block = block.next()) {
//block != c.document()->end(); block = block.next()) {
QString text = block.text();
++parsedStart;
static QRegExp jmsg("(ERROR|Warning):[ \t]*(([a-zA-Z]:)?[^:]+):([0-9]+)(:([0-9]+))?.*", Qt::CaseSensitive, QRegExp::RegExp2);
if (jmsg.exactMatch(text)) {
QStringList parts = jmsg.capturedTexts();
QString path = parts[2].trimmed();
int opb = path.indexOf('['), clb;
if (opb >= 0 && (clb = path.indexOf(']', opb+1)) > opb)
path = path.mid(clb + 1).trimmed();
auto edit = QString("'%1':%2").arg(path).arg(parts[4].trimmed());
if (!parts[6].isEmpty())
edit += ":" + parts[6];
int pos = text.indexOf(path);
Q_ASSERT(pos > 0);
// make the source reference clickable
to_replace << to_replace_pos {
block.position() + pos, path.length(),
QString("<a href=\"system:edit(%1)\">%2</a>").arg(edit, path)};
}
}
// apply delayed replacement
foreach(auto b, to_replace) {
c.setPosition(b.pos);
c.setPosition(b.pos + b.len, c.KeepAnchor);
c.removeSelectedText();
c.insertHtml(b.html);
}
}
/** push command on queue
*/
bool ConsoleEdit::command(QString cmd) {
commands.append(cmd);
if (commands.count() == 1)
QTimer::singleShot(1, this, SLOT(command_do()));
return true;
}
/** push command from queue to Prolog processor
*/
void ConsoleEdit::command_do() {
QString cmd = commands.takeFirst();
QTextCursor c = textCursor();
c.movePosition(QTextCursor::End);
c.insertText(cmd);
c.movePosition(QTextCursor::End);
promptPosition = fixedPosition = c.position();
emit user_input(cmd);
}
/** handle tooltip from helpidx to display current cursor word synopsis
*/
bool ConsoleEdit::event(QEvent *event) {
#if defined(PQCONSOLE_BROWSER)
// there is a bug when QTextBrowser == ConsoleEditBase: trying to avoid discarding message
if (event->type() == QEvent::KeyPress) {
QKeyEvent *k = static_cast<QKeyEvent*>(event);
if (k->key() == Qt::Key_Tab) {
qDebug() << "ignore" << event->type();
event->ignore();
return true;
}
}
#endif
if (event->type() == QEvent::ToolTip) {
QHelpEvent *helpEvent = static_cast<QHelpEvent*>(event);
if (!last_tip.isEmpty())
QToolTip::showText(helpEvent->globalPos(), last_tip);
else {
QToolTip::hideText();
event->ignore();
}
return true;
}
return ConsoleEditBase::event(event);
}
/** sense word under cursor for tooltip display
*/
bool ConsoleEdit::eventFilter(QObject *, QEvent *event) {
if (event->type() == QEvent::MouseMove) {
QTextCursor c = cursorForPosition(static_cast<QMouseEvent*>(event)->pos());
set_cursor_tip(c);
clickable_message_line(c, true);
}
return false;
}
/** the user identifying label is attached somewhere to parents chain
*/
QString ConsoleEdit::titleLabel() {
QString title;
for (QWidget *p = parentWidget(); title.isEmpty() && p; p = p->parentWidget())
if (auto t = qobject_cast<QTabWidget*>(p))
title = t->tabText(t->indexOf(this));
else
title = p->windowTitle();
return title;
}
/** attempt to gracefully stop XPCE thread
*/
bool ConsoleEdit::can_close() {
if (eng && is_running()) {
QMessageBox b(this);
b.setText(tr("[%1] is running a query.\nQuit anyway ?").arg(titleLabel())); //thread_id()
b.setStandardButtons(b.Yes|b.No);
b.setIcon(b.Question);
return b.exec() == b.Yes;
}
return true;
}
/** display different cursor where editing available
*/
void ConsoleEdit::onCursorPositionChanged() {
QTextCursor c = textCursor();
set_cursor_tip(c);
if (fixedPosition > c.position()) {
viewport()->setCursor(Qt::OpenHandCursor);
set_editable(false);
clickable_message_line(c, true);
} else {
set_editable(true);
viewport()->setCursor(Qt::IBeamCursor);
}
if (pmatched.size()) {
pmatched.format_both(c);
pmatched = ParenMatching::range();
}
ParenMatching pm(c);
if (pm)
(pmatched = pm.positions).format_both(c, pmatched.bold());
}
/** check if line content is appropriate, then highlight or open editor on it */
#ifndef PQCONSOLE_HANDLE_HOOVERING
void ConsoleEdit::clickable_message_line(QTextCursor c, bool highlight) {
Q_UNUSED(c)
Q_UNUSED(highlight)
}
#else
void ConsoleEdit::clickable_message_line(QTextCursor c, bool highlight) {
c.movePosition(c.StartOfLine);
int cposition_ = c.position();
QTextCharFormat fposition_ = c.charFormat();
c.movePosition(c.EndOfLine, c.KeepAnchor);
QString line = c.selectedText();
static QRegExp msg("(ERROR|Warning):[ \t]*(([a-zA-Z]:)?[^:]+):([0-9]+)(:([0-9]+))?.*",
Qt::CaseSensitive, QRegExp::RegExp2);
if ( msg.exactMatch(line) ) {
QStringList parts = msg.capturedTexts();
// qDebug() << "file" << parts[2] << "line" << parts[4] << "char" << parts[6];
if ( highlight ) {
if (cposition != cposition_) {
cposition = cposition_;
fposition = fposition_;
QTextCharFormat f = fposition_;
f.setFontUnderline(true);
c.setCharFormat(f);
}
return;
} else {
auto cmd = QString("edit('"+parts[2]+"':"+parts[4]);
if ( !parts[6].isEmpty() )
cmd += ":"+parts[6];
cmd += ")";
qDebug() << cmd;
query_run(cmd);
}
}
if (fposition != QTextCharFormat()) {
c.setPosition(cposition);
c.movePosition(c.EndOfLine, c.KeepAnchor);
c.setCharFormat(fposition);
fposition = QTextCharFormat();
cposition = -1;
}
}
#endif
/** setup tooltip info
*/
void ConsoleEdit::set_cursor_tip(QTextCursor c) {
last_tip = Completion::pred_tip(c);
if (!last_tip.isEmpty())
setToolTip(last_tip);
}
/** pass interrupt request to PlEngine
*/
void ConsoleEdit::int_request() {
qDebug() << "int_request" << thids;
if (!thids.empty())
PL_thread_raise(thids[0], SIGINT);
}
/** serve the user menu issuing the command
*/
void ConsoleEdit::onConsoleMenuAction() {
auto a = qobject_cast<QAction *>(sender());
if (a) {
QString action = a->toolTip();
onConsoleMenuActionMap(action);
}
}
void ConsoleEdit::onConsoleMenuActionMap(const QString& action) {
if (auto w = find_parent<pqMainWindow>(this)) {
if (ConsoleEdit *target = w->consoleActive()) {
qDebug() << action << target->status << QTime::currentTime();
if (target->status == running) {
{ SwiPrologEngine::in_thread e;
int t = PL_thread_self();
Q_ASSERT(!target->thids.contains(t));
target->thids.append(t);
try {
PL_set_prolog_flag("console_thread", PL_INTEGER, t);
PlCall(action.toStdWString().data());
for (int c = 0; c < 100; c++)
do_events(10);
} catch(PlException e) {
qDebug() << CCP(e);
}
target->thids.removeLast();
}
return;
}
target->query_run("notrace("+action+")");
}
}
}
/** remove all text
*/
void ConsoleEdit::tty_clear() {
clear();
fixedPosition = promptPosition = parsedStart = 0;
}
/** issue instancing in GUI thread (cant moveToThread a Widget)
*/
void ConsoleEdit::new_console(Swipl_IO *io, QString title) {
Q_ASSERT(io->target == 0);
auto r = new req_new_console(io, title);
QApplication::instance()->postEvent(this, r);
}
/** added to serve creation in thread
* signal from foreign thread to Qt was not fired
*/
void ConsoleEdit::customEvent(QEvent *event) {
Q_ASSERT(event->type() == QEvent::User);
auto e = static_cast<req_new_console *>(event);
// multi tabbed interface:
pqMainWindow *mw = 0;
for (QWidget *w = parentWidget(); w && !mw; w = w->parentWidget())
mw = qobject_cast<pqMainWindow*>(w);
ConsoleEdit *nc;
if (mw)
mw->addConsole(nc = new ConsoleEdit(e->iop), e->title);
else /* fire and forget :) auto ce = */
nc = new ConsoleEdit(e->iop, e->title);
}
/** store lines from swipl-win console protocol
*/
void ConsoleEdit::add_history_line(QString line)
{
if (history.isEmpty() || history.back() != line)
history.append(line);
history_next = history.count();
history_spare.clear();
}
/** when engine gracefully complete-...
*/
void ConsoleEdit::eng_completed() {
if (eng) {
eng = 0;
// qApp->quit();
QApplication::postEvent(qApp, new QCloseEvent);
}
else if (io) {
if (auto mw = find_parent<pqMainWindow>(this))
mw->remConsole(this);
}
}
/** dispatch execution to appropriate object
*/
void ConsoleEdit::query_run(QString call) {
if (eng)
eng->query_run(call);
else if (io)
io->query_run(call);
}
/** dispatch qualified execution to appropriate object
*/
void ConsoleEdit::query_run(QString module, QString call) {
if (eng)
eng->query_run(module, call);
else if (io)
query_run(module + ":" + call);
}
ConsoleEdit::exec_sync::exec_sync(int timeout_ms) : timeout_ms(timeout_ms) {
stop_ = CT;
go_ = 0;
}
void ConsoleEdit::exec_sync::stop() {
Q_ASSERT(CT == stop_);
for ( ; ; ) {