lyx_mirror/src/frontends/qt4/GuiAlert.cpp
Abdelrazak Younes 1b147f12b0 Spoiling some fun from Andre': put Application on a diet and remove unnecessary string conversions and method indirections.
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@21665 a592a061-630c-0410-9148-cb99ea01b6c8
2007-11-18 20:36:52 +00:00

247 lines
5.5 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 Abdelrazak Younes
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "alert.h"
#include "frontends/Application.h"
#include "qt_helpers.h"
#include "debug.h"
#include "LyX.h" // for lyx::use_gui
#include "ui_AskForTextUi.h"
#include "gettext.h"
#include "support/docstring.h"
#include "support/lstrings.h"
#include <QApplication>
#include <QMessageBox>
#include <QLineEdit>
#include <QInputDialog>
using std::endl;
namespace lyx {
namespace frontend {
using support::bformat;
static docstring const formatted(docstring const & text)
{
const int w = 80;
docstring sout;
if (text.empty())
return sout;
size_t curpos = 0;
docstring line;
while (true) {
size_t const nxtpos1 = text.find(' ', curpos);
size_t const nxtpos2 = text.find('\n', curpos);
size_t const nxtpos = std::min(nxtpos1, nxtpos2);
docstring const word =
nxtpos == docstring::npos ?
text.substr(curpos) :
text.substr(curpos, nxtpos - curpos);
bool const newline = (nxtpos2 != docstring::npos &&
nxtpos2 < nxtpos1);
docstring const line_plus_word =
line.empty() ? word : line + char_type(' ') + word;
// FIXME: make w be size_t
if (int(line_plus_word.length()) >= w) {
sout += line + char_type('\n');
if (newline) {
sout += word + char_type('\n');
line.erase();
} else {
line = word;
}
} else if (newline) {
sout += line_plus_word + char_type('\n');
line.erase();
} else {
if (!line.empty())
line += char_type(' ');
line += word;
}
if (nxtpos == docstring::npos) {
if (!line.empty())
sout += line;
break;
}
curpos = nxtpos + 1;
}
return sout;
}
namespace Alert {
int prompt(docstring const & title0, docstring const & question,
int default_button, int cancel_button,
docstring const & b1, docstring const & b2, docstring const & b3)
{
if (!use_gui || lyxerr.debugging()) {
lyxerr << to_utf8(title0) << '\n'
<< "----------------------------------------\n"
<< to_utf8(question) << endl;
lyxerr << "Assuming answer is ";
switch (default_button) {
case 0: lyxerr << to_utf8(b1) << endl;
case 1: lyxerr << to_utf8(b2) << endl;
case 2: lyxerr << to_utf8(b3) << endl;
}
if (!use_gui)
return default_button;
}
docstring const title = bformat(_("LyX: %1$s"), title0);
// For some reason, sometimes Qt uses an hourglass or watch cursor when
// displaying the alert. Hence, we ask for the standard cursor shape.
// This call has no effect if the cursor has not been overridden.
qApp->changeOverrideCursor(Qt::ArrowCursor);
// FIXME replace that with guiApp->currentView()
int res = QMessageBox::information(qApp->focusWidget(),
toqstr(title),
toqstr(formatted(question)),
toqstr(b1),
toqstr(b2),
b3.empty() ? QString::null : toqstr(b3),
default_button, cancel_button);
// Qt bug: can return -1 on cancel or WM close, despite the docs.
if (res == -1)
res = cancel_button;
return res;
}
void warning(docstring const & title0, docstring const & message)
{
lyxerr << "Warning: " << to_utf8(title0) << '\n'
<< "----------------------------------------\n"
<< to_utf8(message) << endl;
if (!use_gui)
return;
docstring const title = bformat(_("LyX: %1$s"), title0);
if (theApp() == 0) {
int argc = 1;
char * argv[1];
QApplication app(argc, argv);
QMessageBox::warning(0,
toqstr(title),
toqstr(formatted(message)));
return;
}
QMessageBox::warning(qApp->focusWidget(),
toqstr(title),
toqstr(formatted(message)));
}
void error(docstring const & title0, docstring const & message)
{
lyxerr << "Error: " << to_utf8(title0) << '\n'
<< "----------------------------------------\n"
<< to_utf8(message) << endl;
if (!use_gui)
return;
docstring const title = bformat(_("LyX: %1$s"), title0);
if (theApp() == 0) {
int argc = 1;
char * argv[1];
QApplication app(argc, argv);
QMessageBox::critical(0,
toqstr(title),
toqstr(formatted(message)));
return;
}
QMessageBox::critical(qApp->focusWidget(),
toqstr(title),
toqstr(formatted(message)));
}
void information(docstring const & title0, docstring const & message)
{
if (!use_gui || lyxerr.debugging())
lyxerr << to_utf8(title0) << '\n'
<< "----------------------------------------\n"
<< to_utf8(message) << endl;
if (!use_gui)
return;
docstring const title = bformat(_("LyX: %1$s"), title0);
QMessageBox::information(qApp->focusWidget(),
toqstr(title),
toqstr(formatted(message)));
}
bool askForText(docstring & response, docstring const & msg,
docstring const & dflt)
{
if (!use_gui || lyxerr.debugging()) {
lyxerr << "----------------------------------------\n"
<< to_utf8(msg) << '\n'
<< "Assuming answer is " << to_utf8(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 && !text.isEmpty()) {
response = qstring_to_ucs4(text);
return true;
}
response.clear();
return false;
}
} // namespace Alert
} // namespace frontend
} // namespace lyx