dialogs/qerrormessage.cpp

Source codeSwitch to Preprocessed file
LineSource CodeCoverage
1/**************************************************************************** -
2** -
3** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). -
4** Contact: http://www.qt-project.org/legal -
5** -
6** This file is part of the QtGui module of the Qt Toolkit. -
7** -
8** $QT_BEGIN_LICENSE:LGPL$ -
9** Commercial License Usage -
10** Licensees holding valid commercial Qt licenses may use this file in -
11** accordance with the commercial license agreement provided with the -
12** Software or, alternatively, in accordance with the terms contained in -
13** a written agreement between you and Digia. For licensing terms and -
14** conditions see http://qt.digia.com/licensing. For further information -
15** use the contact form at http://qt.digia.com/contact-us. -
16** -
17** GNU Lesser General Public License Usage -
18** Alternatively, this file may be used under the terms of the GNU Lesser -
19** General Public License version 2.1 as published by the Free Software -
20** Foundation and appearing in the file LICENSE.LGPL included in the -
21** packaging of this file. Please review the following information to -
22** ensure the GNU Lesser General Public License version 2.1 requirements -
23** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -
24** -
25** In addition, as a special exception, Digia gives you certain additional -
26** rights. These rights are described in the Digia Qt LGPL Exception -
27** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -
28** -
29** GNU General Public License Usage -
30** Alternatively, this file may be used under the terms of the GNU -
31** General Public License version 3.0 as published by the Free Software -
32** Foundation and appearing in the file LICENSE.GPL included in the -
33** packaging of this file. Please review the following information to -
34** ensure the GNU General Public License version 3.0 requirements will be -
35** met: http://www.gnu.org/copyleft/gpl.html. -
36** -
37** -
38** $QT_END_LICENSE$ -
39** -
40****************************************************************************/ -
41 -
42#include "qerrormessage.h" -
43 -
44#ifndef QT_NO_ERRORMESSAGE -
45 -
46#include "qapplication.h" -
47#include "qcheckbox.h" -
48#include "qlabel.h" -
49#include "qlayout.h" -
50#include "qmessagebox.h" -
51#include "qpushbutton.h" -
52#include "qstringlist.h" -
53#include "qtextedit.h" -
54#include "qdialog_p.h" -
55#include "qpixmap.h" -
56#include "qmetaobject.h" -
57#include "qthread.h" -
58#include "qqueue.h" -
59#include "qset.h" -
60 -
61#include <stdio.h> -
62#include <stdlib.h> -
63 -
64#ifdef Q_OS_WINCE -
65extern bool qt_wince_is_mobile(); //defined in qguifunctions_wince.cpp -
66extern bool qt_wince_is_high_dpi(); //defined in qguifunctions_wince.cpp -
67#endif -
68 -
69QT_BEGIN_NAMESPACE -
70 -
71class QErrorMessagePrivate : public QDialogPrivate -
72{ -
73 Q_DECLARE_PUBLIC(QErrorMessage) -
74public: -
75 QPushButton * ok; -
76 QCheckBox * again; -
77 QTextEdit * errors; -
78 QLabel * icon; -
79 QQueue<QPair<QString, QString> > pending; -
80 QSet<QString> doNotShow; -
81 QSet<QString> doNotShowType; -
82 QString currentMessage; -
83 QString currentType; -
84 -
85 bool nextPending(); -
86 void retranslateStrings(); -
87}; -
88 -
89class QErrorMessageTextView : public QTextEdit -
90{ -
91public: -
92 QErrorMessageTextView(QWidget *parent) -
93 : QTextEdit(parent) { setReadOnly(true); }
executed: }
Execution Count:2
2
94 -
95 virtual QSize minimumSizeHint() const; -
96 virtual QSize sizeHint() const; -
97}; -
98 -
99QSize QErrorMessageTextView::minimumSizeHint() const -
100{ -
101#ifdef Q_OS_WINCE -
102 if (qt_wince_is_mobile()) -
103 if (qt_wince_is_high_dpi()) -
104 return QSize(200, 200); -
105 else -
106 return QSize(100, 100); -
107 else -
108 return QSize(70, 70); -
109#else -
110 return QSize(50, 50);
executed: return QSize(50, 50);
Execution Count:2
2
111#endif -
112} -
113 -
114QSize QErrorMessageTextView::sizeHint() const -
115{ -
116#ifdef Q_OS_WINCE -
117 if (qt_wince_is_mobile()) -
118 if (qt_wince_is_high_dpi()) -
119 return QSize(400, 200); -
120 else -
121 return QSize(320, 120); -
122 else -
123 return QSize(300, 100); -
124#else -
125 return QSize(250, 75);
executed: return QSize(250, 75);
Execution Count:2
2
126#endif //Q_OS_WINCE -
127} -
128 -
129/*! -
130 \class QErrorMessage -
131 -
132 \brief The QErrorMessage class provides an error message display dialog. -
133 -
134 \ingroup standard-dialog -
135 \inmodule QtWidgets -
136 -
137 An error message widget consists of a text label and a checkbox. The -
138 checkbox lets the user control whether the same error message will be -
139 displayed again in the future, typically displaying the text, -
140 "Show this message again" translated into the appropriate local -
141 language. -
142 -
143 For production applications, the class can be used to display messages which -
144 the user only needs to see once. To use QErrorMessage like this, you create -
145 the dialog in the usual way, and show it by calling the showMessage() slot or -
146 connecting signals to it. -
147 -
148 The static qtHandler() function installs a message handler -
149 using qInstallMessageHandler() and creates a QErrorMessage that displays -
150 qDebug(), qWarning() and qFatal() messages. This is most useful in -
151 environments where no console is available to display warnings and -
152 error messages. -
153 -
154 In both cases QErrorMessage will queue pending messages and display -
155 them in order, with each new message being shown as soon as the user -
156 has accepted the previous message. Once the user has specified that a -
157 message is not to be shown again it is automatically skipped, and the -
158 dialog will show the next appropriate message in the queue. -
159 -
160 The \l{dialogs/standarddialogs}{Standard Dialogs} example shows -
161 how to use QErrorMessage as well as other built-in Qt dialogs. -
162 -
163 \image qerrormessage.png -
164 -
165 \sa QMessageBox, QStatusBar::showMessage(), {Standard Dialogs Example} -
166*/ -
167 -
168static QErrorMessage * qtMessageHandler = 0; -
169 -
170static void deleteStaticcQErrorMessage() // post-routine -
171{ -
172 if (qtMessageHandler) {
never evaluated: qtMessageHandler
0
173 delete qtMessageHandler;
never executed (the execution status of this line is deduced): delete qtMessageHandler;
-
174 qtMessageHandler = 0;
never executed (the execution status of this line is deduced): qtMessageHandler = 0;
-
175 }
never executed: }
0
176}
never executed: }
0
177 -
178static bool metFatal = false; -
179 -
180static void jump(QtMsgType t, const QMessageLogContext & /*context*/, const QString &m) -
181{ -
182 if (!qtMessageHandler)
never evaluated: !qtMessageHandler
0
183 return;
never executed: return;
0
184 -
185 QString rich;
never executed (the execution status of this line is deduced): QString rich;
-
186 -
187 switch (t) { -
188 case QtDebugMsg: -
189 default: -
190 rich = QErrorMessage::tr("Debug Message:");
never executed (the execution status of this line is deduced): rich = QErrorMessage::tr("Debug Message:");
-
191 break;
never executed: break;
0
192 case QtWarningMsg: -
193 rich = QErrorMessage::tr("Warning:");
never executed (the execution status of this line is deduced): rich = QErrorMessage::tr("Warning:");
-
194 break;
never executed: break;
0
195 case QtFatalMsg: -
196 rich = QErrorMessage::tr("Fatal Error:");
never executed (the execution status of this line is deduced): rich = QErrorMessage::tr("Fatal Error:");
-
197 }
never executed: }
0
198 rich = QString::fromLatin1("<p><b>%1</b></p>").arg(rich);
never executed (the execution status of this line is deduced): rich = QString::fromLatin1("<p><b>%1</b></p>").arg(rich);
-
199 rich += Qt::convertFromPlainText(m, Qt::WhiteSpaceNormal);
never executed (the execution status of this line is deduced): rich += Qt::convertFromPlainText(m, Qt::WhiteSpaceNormal);
-
200 -
201 // ### work around text engine quirk -
202 if (rich.endsWith(QLatin1String("</p>")))
never evaluated: rich.endsWith(QLatin1String("</p>"))
0
203 rich.chop(4);
never executed: rich.chop(4);
0
204 -
205 if (!metFatal) {
never evaluated: !metFatal
0
206 if (QThread::currentThread() == qApp->thread()) {
never evaluated: QThread::currentThread() == (static_cast<QApplication *>(QCoreApplication::instance()))->thread()
0
207 qtMessageHandler->showMessage(rich);
never executed (the execution status of this line is deduced): qtMessageHandler->showMessage(rich);
-
208 } else {
never executed: }
0
209 QMetaObject::invokeMethod(qtMessageHandler,
never executed (the execution status of this line is deduced): QMetaObject::invokeMethod(qtMessageHandler,
-
210 "showMessage",
never executed (the execution status of this line is deduced): "showMessage",
-
211 Qt::QueuedConnection,
never executed (the execution status of this line is deduced): Qt::QueuedConnection,
-
212 Q_ARG(QString, rich));
never executed (the execution status of this line is deduced): QArgument<QString >("QString", rich));
-
213 }
never executed: }
0
214 metFatal = (t == QtFatalMsg);
never executed (the execution status of this line is deduced): metFatal = (t == QtFatalMsg);
-
215 }
never executed: }
0
216}
never executed: }
0
217 -
218 -
219/*! -
220 Constructs and installs an error handler window with the given \a -
221 parent. -
222*/ -
223 -
224QErrorMessage::QErrorMessage(QWidget * parent) -
225 : QDialog(*new QErrorMessagePrivate, parent) -
226{ -
227 Q_D(QErrorMessage);
executed (the execution status of this line is deduced): QErrorMessagePrivate * const d = d_func();
-
228 QGridLayout * grid = new QGridLayout(this);
executed (the execution status of this line is deduced): QGridLayout * grid = new QGridLayout(this);
-
229 d->icon = new QLabel(this);
executed (the execution status of this line is deduced): d->icon = new QLabel(this);
-
230#ifndef QT_NO_MESSAGEBOX -
231 d->icon->setPixmap(QMessageBox::standardIcon(QMessageBox::Information));
executed (the execution status of this line is deduced): d->icon->setPixmap(QMessageBox::standardIcon(QMessageBox::Information));
-
232 d->icon->setAlignment(Qt::AlignHCenter | Qt::AlignTop);
executed (the execution status of this line is deduced): d->icon->setAlignment(Qt::AlignHCenter | Qt::AlignTop);
-
233#endif -
234 grid->addWidget(d->icon, 0, 0, Qt::AlignTop);
executed (the execution status of this line is deduced): grid->addWidget(d->icon, 0, 0, Qt::AlignTop);
-
235 d->errors = new QErrorMessageTextView(this);
executed (the execution status of this line is deduced): d->errors = new QErrorMessageTextView(this);
-
236 grid->addWidget(d->errors, 0, 1);
executed (the execution status of this line is deduced): grid->addWidget(d->errors, 0, 1);
-
237 d->again = new QCheckBox(this);
executed (the execution status of this line is deduced): d->again = new QCheckBox(this);
-
238 d->again->setChecked(true);
executed (the execution status of this line is deduced): d->again->setChecked(true);
-
239 grid->addWidget(d->again, 1, 1, Qt::AlignTop);
executed (the execution status of this line is deduced): grid->addWidget(d->again, 1, 1, Qt::AlignTop);
-
240 d->ok = new QPushButton(this);
executed (the execution status of this line is deduced): d->ok = new QPushButton(this);
-
241 -
242 -
243#if defined(Q_OS_WINCE) -
244 d->ok->setFixedSize(0,0); -
245#endif -
246 connect(d->ok, SIGNAL(clicked()), this, SLOT(accept()));
executed (the execution status of this line is deduced): connect(d->ok, "2""clicked()", this, "1""accept()");
-
247 d->ok->setFocus();
executed (the execution status of this line is deduced): d->ok->setFocus();
-
248 grid->addWidget(d->ok, 2, 0, 1, 2, Qt::AlignCenter);
executed (the execution status of this line is deduced): grid->addWidget(d->ok, 2, 0, 1, 2, Qt::AlignCenter);
-
249 grid->setColumnStretch(1, 42);
executed (the execution status of this line is deduced): grid->setColumnStretch(1, 42);
-
250 grid->setRowStretch(0, 42);
executed (the execution status of this line is deduced): grid->setRowStretch(0, 42);
-
251 d->retranslateStrings();
executed (the execution status of this line is deduced): d->retranslateStrings();
-
252}
executed: }
Execution Count:2
2
253 -
254 -
255/*! -
256 Destroys the error message dialog. -
257*/ -
258 -
259QErrorMessage::~QErrorMessage() -
260{ -
261 if (this == qtMessageHandler) {
partially evaluated: this == qtMessageHandler
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:2
0-2
262 qtMessageHandler = 0;
never executed (the execution status of this line is deduced): qtMessageHandler = 0;
-
263 QtMessageHandler tmp = qInstallMessageHandler(0);
never executed (the execution status of this line is deduced): QtMessageHandler tmp = qInstallMessageHandler(0);
-
264 // in case someone else has later stuck in another... -
265 if (tmp != jump)
never evaluated: tmp != jump
0
266 qInstallMessageHandler(tmp);
never executed: qInstallMessageHandler(tmp);
0
267 }
never executed: }
0
268}
executed: }
Execution Count:2
2
269 -
270 -
271/*! \reimp */ -
272 -
273void QErrorMessage::done(int a) -
274{ -
275 Q_D(QErrorMessage);
executed (the execution status of this line is deduced): QErrorMessagePrivate * const d = d_func();
-
276 if (!d->again->isChecked() && !d->currentMessage.isEmpty() && d->currentType.isEmpty()) {
evaluated: !d->again->isChecked()
TRUEFALSE
yes
Evaluation Count:3
yes
Evaluation Count:5
partially evaluated: !d->currentMessage.isEmpty()
TRUEFALSE
yes
Evaluation Count:3
no
Evaluation Count:0
evaluated: d->currentType.isEmpty()
TRUEFALSE
yes
Evaluation Count:2
yes
Evaluation Count:1
0-5
277 d->doNotShow.insert(d->currentMessage);
executed (the execution status of this line is deduced): d->doNotShow.insert(d->currentMessage);
-
278 }
executed: }
Execution Count:2
2
279 if (!d->again->isChecked() && !d->currentType.isEmpty()) {
evaluated: !d->again->isChecked()
TRUEFALSE
yes
Evaluation Count:3
yes
Evaluation Count:5
evaluated: !d->currentType.isEmpty()
TRUEFALSE
yes
Evaluation Count:1
yes
Evaluation Count:2
1-5
280 d->doNotShowType.insert(d->currentType);
executed (the execution status of this line is deduced): d->doNotShowType.insert(d->currentType);
-
281 }
executed: }
Execution Count:1
1
282 d->currentMessage.clear();
executed (the execution status of this line is deduced): d->currentMessage.clear();
-
283 d->currentType.clear();
executed (the execution status of this line is deduced): d->currentType.clear();
-
284 if (!d->nextPending()) {
partially evaluated: !d->nextPending()
TRUEFALSE
yes
Evaluation Count:8
no
Evaluation Count:0
0-8
285 QDialog::done(a);
executed (the execution status of this line is deduced): QDialog::done(a);
-
286 if (this == qtMessageHandler && metFatal)
partially evaluated: this == qtMessageHandler
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:8
never evaluated: metFatal
0-8
287 exit(1);
never executed: exit(1);
0
288 }
executed: }
Execution Count:8
8
289}
executed: }
Execution Count:8
8
290 -
291 -
292/*! -
293 Returns a pointer to a QErrorMessage object that outputs the -
294 default Qt messages. This function creates such an object, if there -
295 isn't one already. -
296*/ -
297 -
298QErrorMessage * QErrorMessage::qtHandler() -
299{ -
300 if (!qtMessageHandler) {
never evaluated: !qtMessageHandler
0
301 qtMessageHandler = new QErrorMessage(0);
never executed (the execution status of this line is deduced): qtMessageHandler = new QErrorMessage(0);
-
302 qAddPostRoutine(deleteStaticcQErrorMessage); // clean up
never executed (the execution status of this line is deduced): qAddPostRoutine(deleteStaticcQErrorMessage);
-
303 qtMessageHandler->setWindowTitle(QApplication::applicationName());
never executed (the execution status of this line is deduced): qtMessageHandler->setWindowTitle(QApplication::applicationName());
-
304 qInstallMessageHandler(jump);
never executed (the execution status of this line is deduced): qInstallMessageHandler(jump);
-
305 }
never executed: }
0
306 return qtMessageHandler;
never executed: return qtMessageHandler;
0
307} -
308 -
309 -
310/*! \internal */ -
311 -
312bool QErrorMessagePrivate::nextPending() -
313{ -
314 while (!pending.isEmpty()) {
evaluated: !pending.isEmpty()
TRUEFALSE
yes
Evaluation Count:11
yes
Evaluation Count:10
10-11
315 QPair<QString,QString> pendingMessage = pending.dequeue();
executed (the execution status of this line is deduced): QPair<QString,QString> pendingMessage = pending.dequeue();
-
316 QString message = pendingMessage.first;
executed (the execution status of this line is deduced): QString message = pendingMessage.first;
-
317 QString type = pendingMessage.second;
executed (the execution status of this line is deduced): QString type = pendingMessage.second;
-
318 if (!message.isEmpty() && ((type.isEmpty() && !doNotShow.contains(message)) || (!type.isEmpty() && !doNotShowType.contains(type)))) {
partially evaluated: !message.isEmpty()
TRUEFALSE
yes
Evaluation Count:11
no
Evaluation Count:0
evaluated: type.isEmpty()
TRUEFALSE
yes
Evaluation Count:5
yes
Evaluation Count:6
partially evaluated: !doNotShow.contains(message)
TRUEFALSE
yes
Evaluation Count:5
no
Evaluation Count:0
partially evaluated: !type.isEmpty()
TRUEFALSE
yes
Evaluation Count:6
no
Evaluation Count:0
evaluated: !doNotShowType.contains(type)
TRUEFALSE
yes
Evaluation Count:4
yes
Evaluation Count:2
0-11
319#ifndef QT_NO_TEXTHTMLPARSER -
320 errors->setHtml(message);
executed (the execution status of this line is deduced): errors->setHtml(message);
-
321#else -
322 errors->setPlainText(message); -
323#endif -
324 currentMessage = message;
executed (the execution status of this line is deduced): currentMessage = message;
-
325 currentType = type;
executed (the execution status of this line is deduced): currentType = type;
-
326 return true;
executed: return true;
Execution Count:9
9
327 } -
328 }
executed: }
Execution Count:2
2
329 return false;
executed: return false;
Execution Count:10
10
330} -
331 -
332 -
333/*! -
334 Shows the given message, \a message, and returns immediately. If the user -
335 has requested for the message not to be shown again, this function does -
336 nothing. -
337 -
338 Normally, the message is displayed immediately. However, if there are -
339 pending messages, it will be queued to be displayed later. -
340*/ -
341 -
342void QErrorMessage::showMessage(const QString &message) -
343{ -
344 Q_D(QErrorMessage);
executed (the execution status of this line is deduced): QErrorMessagePrivate * const d = d_func();
-
345 if (d->doNotShow.contains(message))
evaluated: d->doNotShow.contains(message)
TRUEFALSE
yes
Evaluation Count:2
yes
Evaluation Count:5
2-5
346 return;
executed: return;
Execution Count:2
2
347 d->pending.enqueue(qMakePair(message,QString()));
executed (the execution status of this line is deduced): d->pending.enqueue(qMakePair(message,QString()));
-
348 if (!isVisible() && d->nextPending())
partially evaluated: !isVisible()
TRUEFALSE
yes
Evaluation Count:5
no
Evaluation Count:0
partially evaluated: d->nextPending()
TRUEFALSE
yes
Evaluation Count:5
no
Evaluation Count:0
0-5
349 show();
executed: show();
Execution Count:5
5
350}
executed: }
Execution Count:5
5
351 -
352/*! -
353 \since 4.5 -
354 \overload -
355 -
356 Shows the given message, \a message, and returns immediately. If the user -
357 has requested for messages of type, \a type, not to be shown again, this -
358 function does nothing. -
359 -
360 Normally, the message is displayed immediately. However, if there are -
361 pending messages, it will be queued to be displayed later. -
362 -
363 \sa showMessage() -
364*/ -
365 -
366void QErrorMessage::showMessage(const QString &message, const QString &type) -
367{ -
368 Q_D(QErrorMessage);
executed (the execution status of this line is deduced): QErrorMessagePrivate * const d = d_func();
-
369 if (d->doNotShow.contains(message) && d->doNotShowType.contains(type))
partially evaluated: d->doNotShow.contains(message)
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:7
never evaluated: d->doNotShowType.contains(type)
0-7
370 return;
never executed: return;
0
371 d->pending.push_back(qMakePair(message,type));
executed (the execution status of this line is deduced): d->pending.push_back(qMakePair(message,type));
-
372 if (!isVisible() && d->nextPending())
evaluated: !isVisible()
TRUEFALSE
yes
Evaluation Count:6
yes
Evaluation Count:1
evaluated: d->nextPending()
TRUEFALSE
yes
Evaluation Count:4
yes
Evaluation Count:2
1-6
373 show();
executed: show();
Execution Count:4
4
374}
executed: }
Execution Count:7
7
375 -
376/*! -
377 \reimp -
378*/ -
379void QErrorMessage::changeEvent(QEvent *e) -
380{ -
381 Q_D(QErrorMessage);
never executed (the execution status of this line is deduced): QErrorMessagePrivate * const d = d_func();
-
382 if (e->type() == QEvent::LanguageChange) {
never evaluated: e->type() == QEvent::LanguageChange
0
383 d->retranslateStrings();
never executed (the execution status of this line is deduced): d->retranslateStrings();
-
384 }
never executed: }
0
385 QDialog::changeEvent(e);
never executed (the execution status of this line is deduced): QDialog::changeEvent(e);
-
386}
never executed: }
0
387 -
388void QErrorMessagePrivate::retranslateStrings() -
389{ -
390 again->setText(QErrorMessage::tr("&Show this message again"));
executed (the execution status of this line is deduced): again->setText(QErrorMessage::tr("&Show this message again"));
-
391 ok->setText(QErrorMessage::tr("&OK"));
executed (the execution status of this line is deduced): ok->setText(QErrorMessage::tr("&OK"));
-
392}
executed: }
Execution Count:2
2
393 -
394QT_END_NAMESPACE -
395 -
396#endif // QT_NO_ERRORMESSAGE -
397 -
Source codeSwitch to Preprocessed file
Generated by Squish Coco Non-Commercial