lyx_mirror/src/frontends/qt4/GuiAlert.cpp

318 lines
7.5 KiB
C++

/**
* \file qt4/GuiAlert.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author John Levon
* \author Jürgen Spitzmüller
* \author Abdelrazak Younes
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "alert.h"
#include "InGuiThread.h"
#include "frontends/Application.h"
#include "qt_helpers.h"
#include "LyX.h" // for lyx::use_gui
#include "support/gettext.h"
#include "support/debug.h"
#include "support/docstring.h"
#include "support/lstrings.h"
#include "support/ProgressInterface.h"
#include <QApplication>
#include <QCheckBox>
#include <QMessageBox>
#include <QLineEdit>
#include <QInputDialog>
#include <QPushButton>
#include <QSettings>
#include <iomanip>
#include <iostream>
// sync with GuiView.cpp
#define EXPORT_in_THREAD 1
using namespace std;
using namespace lyx::support;
namespace lyx {
namespace frontend {
void noAppDialog(QString const & title, QString const & msg, QMessageBox::Icon mode)
{
int argc = 1;
const char *argv[] = { "lyx", 0 };
QApplication app(argc, (char**)argv);
switch (mode)
{
case QMessageBox::Information: QMessageBox::information(0, title, msg); break;
case QMessageBox::Warning: QMessageBox::warning(0, title, msg); break;
case QMessageBox::Critical: QMessageBox::critical(0, title, msg); break;
default: break;
}
}
namespace Alert {
int doPrompt(docstring const & title0, docstring const & question,
int default_button, int cancel_button,
docstring const & b1, docstring const & b2,
docstring const & b3, docstring const & b4)
{
//lyxerr << "PROMPT" << title0 << "FOCUS: " << qApp->focusWidget() << endl;
if (!use_gui || lyxerr.debugging()) {
lyxerr << title0 << '\n'
<< "----------------------------------------\n"
<< question << endl;
lyxerr << "Assuming answer is ";
switch (default_button) {
case 0: lyxerr << b1 << endl;
case 1: lyxerr << b2 << endl;
case 2: lyxerr << b3 << endl;
case 3: lyxerr << b4 << endl;
}
if (!use_gui)
return default_button;
}
docstring const title = bformat(_("LyX: %1$s"), title0);
/// Long operation in progress prevents user from Ok-ing the error dialog
bool long_op = theApp()->longOperationStarted();
if (long_op)
theApp()->stopLongOperation();
// For some reason, sometimes Qt uses a hourglass or watch cursor when
// displaying the alert. Hence, we ask for the standard cursor shape.
qApp->setOverrideCursor(Qt::ArrowCursor);
// FIXME replace that with guiApp->currentView()
//LYXERR0("FOCUS: " << qApp->focusWidget());
QPushButton * b[4] = { 0, 0, 0, 0 };
QMessageBox msg_box(QMessageBox::Information,
toqstr(title), toqstr(question),
QMessageBox::NoButton, qApp->focusWidget());
b[0] = msg_box.addButton(b1.empty() ? "OK" : toqstr(b1),
QMessageBox::ActionRole);
if (!b2.empty())
b[1] = msg_box.addButton(toqstr(b2), QMessageBox::ActionRole);
if (!b3.empty())
b[2] = msg_box.addButton(toqstr(b3), QMessageBox::ActionRole);
if (!b4.empty())
b[3] = msg_box.addButton(toqstr(b4), QMessageBox::ActionRole);
msg_box.setDefaultButton(b[default_button]);
msg_box.setEscapeButton(static_cast<QAbstractButton *>(b[cancel_button]));
int res = msg_box.exec();
qApp->restoreOverrideCursor();
if (long_op)
theApp()->startLongOperation();
// Qt bug: can return -1 on cancel or WM close, despite the docs.
if (res == -1)
res = cancel_button;
return res;
}
int prompt(docstring const & title0, docstring const & question,
int default_button, int cancel_button,
docstring const & b1, docstring const & b2,
docstring const & b3, docstring const & b4)
{
#ifdef EXPORT_in_THREAD
return InGuiThread<int>().call(&doPrompt,
#else
return doPrompt(
#endif
title0, question, default_button,
cancel_button, b1, b2, b3, b4);
}
void doWarning(docstring const & title0, docstring const & message,
bool const & askshowagain)
{
lyxerr << "Warning: " << title0 << '\n'
<< "----------------------------------------\n"
<< message << endl;
if (!use_gui)
return;
docstring const title = bformat(_("LyX: %1$s"), title0);
if (theApp() == 0) {
noAppDialog(toqstr(title), toqstr(message), QMessageBox::Warning);
return;
}
// Don't use a hourglass cursor while displaying the alert
qApp->setOverrideCursor(Qt::ArrowCursor);
if (!askshowagain) {
ProgressInterface::instance()->warning(
toqstr(title),
toqstr(message));
} else {
ProgressInterface::instance()->toggleWarning(
toqstr(title),
toqstr(message),
toqstr(message));
}
qApp->restoreOverrideCursor();
}
void warning(docstring const & title0, docstring const & message,
bool const & askshowagain)
{
#ifdef EXPORT_in_THREAD
InGuiThread<void>().call(&doWarning,
#else
doWarning(
#endif
title0, message, askshowagain);
}
void doError(docstring const & title0, docstring const & message)
{
lyxerr << "Error: " << title0 << '\n'
<< "----------------------------------------\n"
<< message << endl;
if (!use_gui)
return;
docstring const title = bformat(_("LyX: %1$s"), title0);
if (theApp() == 0) {
noAppDialog(toqstr(title), toqstr(message), QMessageBox::Critical);
return;
}
/// Long operation in progress prevents user from Ok-ing the error dialog
bool long_op = theApp()->longOperationStarted();
if (long_op)
theApp()->stopLongOperation();
// Don't use a hourglass cursor while displaying the alert
qApp->setOverrideCursor(Qt::ArrowCursor);
ProgressInterface::instance()->error(
toqstr(title),
toqstr(message));
qApp->restoreOverrideCursor();
if (long_op)
theApp()->startLongOperation();
}
void error(docstring const & title0, docstring const & message)
{
#ifdef EXPORT_in_THREAD
InGuiThread<void>().call(&doError,
#else
doError(
#endif
title0, message);
}
void doInformation(docstring const & title0, docstring const & message)
{
if (!use_gui || lyxerr.debugging())
lyxerr << title0 << '\n'
<< "----------------------------------------\n"
<< message << endl;
if (!use_gui)
return;
docstring const title = bformat(_("LyX: %1$s"), title0);
if (theApp() == 0) {
noAppDialog(toqstr(title), toqstr(message), QMessageBox::Information);
return;
}
// Don't use a hourglass cursor while displaying the alert
qApp->setOverrideCursor(Qt::ArrowCursor);
ProgressInterface::instance()->information(
toqstr(title),
toqstr(message));
qApp->restoreOverrideCursor();
}
void information(docstring const & title0, docstring const & message)
{
#ifdef EXPORT_in_THREAD
InGuiThread<void>().call(&doInformation,
#else
doInformation(
#endif
title0, message);
}
bool doAskForText(docstring & response, docstring const & msg,
docstring const & dflt)
{
if (!use_gui || lyxerr.debugging()) {
lyxerr << "----------------------------------------\n"
<< msg << '\n'
<< "Assuming answer is " << dflt << '\n'
<< "----------------------------------------" << endl;
if (!use_gui) {
response = dflt;
return true;
}
}
docstring const title = bformat(_("LyX: %1$s"), msg);
bool ok;
QString text = QInputDialog::getText(qApp->focusWidget(),
toqstr(title),
toqstr(char_type('&') + msg),
QLineEdit::Normal,
toqstr(dflt), &ok);
if (ok) {
response = qstring_to_ucs4(text);
return true;
}
response.clear();
return false;
}
bool askForText(docstring & response, docstring const & msg,
docstring const & dflt)
{
#ifdef EXPORT_in_THREAD
return InGuiThread<bool>().call(&doAskForText,
#else
return doAskForText(
#endif
response, msg, dflt);
}
} // namespace Alert
} // namespace frontend
} // namespace lyx