/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
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** $QT_END_LICENSE$
**
****************************************************************************/
#include "qwizard.h"
#ifndef QT_NO_WIZARD
#include "qabstractspinbox.h"
#include "qalgorithms.h"
#include "qapplication.h"
#include "qboxlayout.h"
#include "qlayoutitem.h"
#include "qdesktopwidget.h"
#include "qevent.h"
#include "qframe.h"
#include "qlabel.h"
#include "qlineedit.h"
#include "qpainter.h"
#include "qpushbutton.h"
#include "qset.h"
#include "qstyle.h"
#include "qvarlengtharray.h"
#if defined(Q_WS_MAC)
#include "private/qt_mac_p.h"
#include "qlibrary.h"
#elif !defined(QT_NO_STYLE_WINDOWSVISTA)
#include "qwizard_win_p.h"
#include "qtimer.h"
#endif
#include "private/qdialog_p.h"
#include <qdebug.h>
#ifdef Q_WS_WINCE
extern bool qt_wince_is_mobile(); //defined in qguifunctions_wce.cpp
#endif
#include <string.h> // for memset()
#ifdef QT_SOFTKEYS_ENABLED
#include "qaction.h"
#endif
QT_BEGIN_NAMESPACE
// These fudge terms were needed a few places to obtain pixel-perfect results
const int GapBetweenLogoAndRightEdge = 5;
const int ModernHeaderTopMargin = 2;
const int ClassicHMargin = 4;
const int MacButtonTopMargin = 13;
const int MacLayoutLeftMargin = 20;
//const int MacLayoutTopMargin = 14; // Unused. Save some space and avoid warning.
const int MacLayoutRightMargin = 20;
const int MacLayoutBottomMargin = 17;
static void changeSpacerSize(QLayout *layout, int index, int width, int height)
{
QSpacerItem *spacer = layout->itemAt(index)->spacerItem();
if (!spacer)
return;
spacer->changeSize(width, height);
}
static QWidget *iWantTheFocus(QWidget *ancestor)
{
const int MaxIterations = 100;
QWidget *candidate = ancestor;
for (int i = 0; i < MaxIterations; ++i) {
candidate = candidate->nextInFocusChain();
if (!candidate)
break;
if (candidate->focusPolicy() & Qt::TabFocus) {
if (candidate != ancestor && ancestor->isAncestorOf(candidate))
return candidate;
}
}
return 0;
}
static bool objectInheritsXAndXIsCloserThanY(const QObject *object, const QByteArray &classX,
const QByteArray &classY)
{
const QMetaObject *metaObject = object->metaObject();
while (metaObject) {
if (metaObject->className() == classX)
return true;
if (metaObject->className() == classY)
return false;
metaObject = metaObject->superClass();
}
return false;
}
const int NFallbackDefaultProperties = 7;
const struct {
const char *className;
const char *property;
const char *changedSignal;
} fallbackProperties[NFallbackDefaultProperties] = {
// If you modify this list, make sure to update the documentation (and the auto test)
{ "QAbstractButton", "checked", SIGNAL(toggled(bool)) },
{ "QAbstractSlider", "value", SIGNAL(valueChanged(int)) },
{ "QComboBox", "currentIndex", SIGNAL(currentIndexChanged(int)) },
{ "QDateTimeEdit", "dateTime", SIGNAL(dateTimeChanged(QDateTime)) },
{ "QLineEdit", "text", SIGNAL(textChanged(QString)) },
{ "QListWidget", "currentRow", SIGNAL(currentRowChanged(int)) },
{ "QSpinBox", "value", SIGNAL(valueChanged(int)) }
};
class QWizardDefaultProperty
{
public:
QByteArray className;
QByteArray property;
QByteArray changedSignal;
inline QWizardDefaultProperty() {}
inline QWizardDefaultProperty(const char *className, const char *property,
const char *changedSignal)
: className(className), property(property), changedSignal(changedSignal) {}
};
class QWizardField
{
public:
inline QWizardField() {}
QWizardField(QWizardPage *page, const QString &spec, QObject *object, const char *property,
const char *changedSignal);
void resolve(const QVector<QWizardDefaultProperty> &defaultPropertyTable);
void findProperty(const QWizardDefaultProperty *properties, int propertyCount);
QWizardPage *page;
QString name;
bool mandatory;
QObject *object;
QByteArray property;
QByteArray changedSignal;
QVariant initialValue;
};
QWizardField::QWizardField(QWizardPage *page, const QString &spec, QObject *object,
const char *property, const char *changedSignal)
: page(page), name(spec), mandatory(false), object(object), property(property),
changedSignal(changedSignal)
{
if (name.endsWith(QLatin1Char('*'))) {
name.chop(1);
mandatory = true;
}
}
void QWizardField::resolve(const QVector<QWizardDefaultProperty> &defaultPropertyTable)
{
if (property.isEmpty())
findProperty(defaultPropertyTable.constData(), defaultPropertyTable.count());
initialValue = object->property(property);
}
void QWizardField::findProperty(const QWizardDefaultProperty *properties, int propertyCount)
{
QByteArray className;
for (int i = 0; i < propertyCount; ++i) {
if (objectInheritsXAndXIsCloserThanY(object, properties[i].className, className)) {
className = properties[i].className;
property = properties[i].property;
changedSignal = properties[i].changedSignal;
}
}
}
class QWizardLayoutInfo
{
public:
inline QWizardLayoutInfo()
: topLevelMarginLeft(-1), topLevelMarginRight(-1), topLevelMarginTop(-1),
topLevelMarginBottom(-1), childMarginLeft(-1), childMarginRight(-1),
childMarginTop(-1), childMarginBottom(-1), hspacing(-1), vspacing(-1),
wizStyle(QWizard::ClassicStyle), header(false), watermark(false), title(false),
subTitle(false), extension(false) {}
int topLevelMarginLeft;
int topLevelMarginRight;
int topLevelMarginTop;
int topLevelMarginBottom;
int childMarginLeft;
int childMarginRight;
int childMarginTop;
int childMarginBottom;
int hspacing;
int vspacing;
int buttonSpacing;
QWizard::WizardStyle wizStyle;
bool header;
bool watermark;
bool title;
bool subTitle;
bool extension;
bool operator==(const QWizardLayoutInfo &other);
inline bool operator!=(const QWizardLayoutInfo &other) { return !operator==(other); }
};
bool QWizardLayoutInfo::operator==(const QWizardLayoutInfo &other)
{
return topLevelMarginLeft == other.topLevelMarginLeft
&& topLevelMarginRight == other.topLevelMarginRight
&& topLevelMarginTop == other.topLevelMarginTop
&& topLevelMarginBottom == other.topLevelMarginBottom
&& childMarginLeft == other.childMarginLeft
&& childMarginRight == other.childMarginRight
&& childMarginTop == other.childMarginTop
&& childMarginBottom == other.childMarginBottom
&& hspacing == other.hspacing
&& vspacing == other.vspacing
&& buttonSpacing == other.buttonSpacing
&& wizStyle == other.wizStyle
&& header == other.header
&& watermark == other.watermark
&& title == other.title
&& subTitle == other.subTitle
&& extension == other.extension;
}
class QWizardHeader : public QWidget
{
public:
enum RulerType { Ruler };
inline QWizardHeader(RulerType /* ruler */, QWidget *parent = 0)
: QWidget(parent) { setFixedHeight(2); }
QWizardHeader(QWidget *parent = 0);
void setup(const QWizardLayoutInfo &info, const QString &title,
const QString &subTitle, const QPixmap &logo, const QPixmap &banner,
Qt::TextFormat titleFormat, Qt::TextFormat subTitleFormat);
protected:
void paintEvent(QPaintEvent *event);
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
private:
bool vistaDisabled() const;
#endif
private:
QLabel *titleLabel;
QLabel *subTitleLabel;
QLabel *logoLabel;
QGridLayout *layout;
QPixmap bannerPixmap;
};
QWizardHeader::QWizardHeader(QWidget *parent)
: QWidget(parent)
{
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
setBackgroundRole(QPalette::Base);
titleLabel = new QLabel(this);
titleLabel->setBackgroundRole(QPalette::Base);
subTitleLabel = new QLabel(this);
subTitleLabel->setAlignment(Qt::AlignTop | Qt::AlignLeft);
subTitleLabel->setWordWrap(true);
logoLabel = new QLabel(this);
QFont font = titleLabel->font();
font.setBold(true);
titleLabel->setFont(font);
layout = new QGridLayout(this);
layout->setMargin(0);
layout->setSpacing(0);
layout->setRowMinimumHeight(3, 1);
layout->setRowStretch(4, 1);
layout->setColumnStretch(2, 1);
layout->setColumnMinimumWidth(4, 2 * GapBetweenLogoAndRightEdge);
layout->setColumnMinimumWidth(6, GapBetweenLogoAndRightEdge);
layout->addWidget(titleLabel, 2, 1, 1, 2);
layout->addWidget(subTitleLabel, 4, 2);
layout->addWidget(logoLabel, 1, 5, 5, 1);
}
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
bool QWizardHeader::vistaDisabled() const
{
bool styleDisabled = false;
QWizard *wiz = parentWidget() ? qobject_cast <QWizard *>(parentWidget()->parentWidget()) : 0;
if (wiz) {
// Designer dosen't support the Vista style for Wizards. This property is used to turn
// off the Vista style.
const QVariant v = wiz->property("_q_wizard_vista_off");
styleDisabled = v.isValid() && v.toBool();
}
return styleDisabled;
}
#endif
void QWizardHeader::setup(const QWizardLayoutInfo &info, const QString &title,
const QString &subTitle, const QPixmap &logo, const QPixmap &banner,
Qt::TextFormat titleFormat, Qt::TextFormat subTitleFormat)
{
bool modern = ((info.wizStyle == QWizard::ModernStyle)
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
|| ((info.wizStyle == QWizard::AeroStyle
&& QVistaHelper::vistaState() == QVistaHelper::Classic) || vistaDisabled())
#endif
);
layout->setRowMinimumHeight(0, modern ? ModernHeaderTopMargin : 0);
layout->setRowMinimumHeight(1, modern ? info.topLevelMarginTop - ModernHeaderTopMargin - 1 : 0);
layout->setRowMinimumHeight(6, (modern ? 3 : GapBetweenLogoAndRightEdge) + 2);
int minColumnWidth0 = modern ? info.topLevelMarginLeft + info.topLevelMarginRight : 0;
int minColumnWidth1 = modern ? info.topLevelMarginLeft + info.topLevelMarginRight + 1
: info.topLevelMarginLeft + ClassicHMargin;
layout->setColumnMinimumWidth(0, minColumnWidth0);
layout->setColumnMinimumWidth(1, minColumnWidth1);
titleLabel->setTextFormat(titleFormat);
titleLabel->setText(title);
logoLabel->setPixmap(logo);
subTitleLabel->setTextFormat(subTitleFormat);
subTitleLabel->setText(QLatin1String("Pq\nPq"));
int desiredSubTitleHeight = subTitleLabel->sizeHint().height();
subTitleLabel->setText(subTitle);
if (modern) {
bannerPixmap = banner;
} else {
bannerPixmap = QPixmap();
}
if (bannerPixmap.isNull()) {
/*
There is no widthForHeight() function, so we simulate it with a loop.
*/
int candidateSubTitleWidth = qMin(512, 2 * QApplication::desktop()->width() / 3);
int delta = candidateSubTitleWidth >> 1;
while (delta > 0) {
if (subTitleLabel->heightForWidth(candidateSubTitleWidth - delta)
<= desiredSubTitleHeight)
candidateSubTitleWidth -= delta;
delta >>= 1;
}
subTitleLabel->setMinimumSize(candidateSubTitleWidth, desiredSubTitleHeight);
QSize size = layout->totalMinimumSize();
setMinimumSize(size);
setMaximumSize(QWIDGETSIZE_MAX, size.height());
} else {
subTitleLabel->setMinimumSize(0, 0);
setFixedSize(banner.size() + QSize(0, 2));
}
updateGeometry();
}
void QWizardHeader::paintEvent(QPaintEvent * /* event */)
{
QPainter painter(this);
painter.drawPixmap(0, 0, bannerPixmap);
int x = width() - 2;
int y = height() - 2;
const QPalette &pal = palette();
painter.setPen(pal.mid().color());
painter.drawLine(0, y, x, y);
painter.setPen(pal.base().color());
painter.drawPoint(x + 1, y);
painter.drawLine(0, y + 1, x + 1, y + 1);
}
// We save one vtable by basing QWizardRuler on QWizardHeader
class QWizardRuler : public QWizardHeader
{
public:
inline QWizardRuler(QWidget *parent = 0)
: QWizardHeader(Ruler, parent) {}
};
class QWizardPagePrivate : public QWidgetPrivate
{
Q_DECLARE_PUBLIC(QWizardPage)
public:
enum TriState { Tri_Unknown = -1, Tri_False, Tri_True };
inline QWizardPagePrivate()
: wizard(0), completeState(Tri_Unknown), explicitlyFinal(false), commit(false) {}
bool cachedIsComplete() const;
void _q_maybeEmitCompleteChanged();
void _q_updateCachedCompleteState();
QWizard *wizard;
QString title;
QString subTitle;
QPixmap pixmaps[QWizard::NPixmaps];
QVector<QWizardField> pendingFields;
mutable TriState completeState;
bool explicitlyFinal;
bool commit;
QMap<int, QString> buttonCustomTexts;
};
bool QWizardPagePrivate::cachedIsComplete() const
{
Q_Q(const QWizardPage);
if (completeState == Tri_Unknown)
completeState = q->isComplete() ? Tri_True : Tri_False;
return completeState == Tri_True;
}
void QWizardPagePrivate::_q_maybeEmitCompleteChanged()
{
Q_Q(QWizardPage);
TriState newState = q->isComplete() ? Tri_True : Tri_False;
if (newState != completeState)
emit q->completeChanged();
}
void QWizardPagePrivate::_q_updateCachedCompleteState()
{
Q_Q(QWizardPage);
completeState = q->isComplete() ? Tri_True : Tri_False;
}
class QWizardAntiFlickerWidget : public QWidget
{
QWizard *wizard;
QWizardPrivate *wizardPrivate;
public:
QWizardAntiFlickerWidget(QWizard *wizard, QWizardPrivate *wizardPrivate)
: QWidget(wizard)
, wizard(wizard)
, wizardPrivate(wizardPrivate) {}
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
protected:
void paintEvent(QPaintEvent *);
#endif
};
class QWizardPrivate : public QDialogPrivate
{
Q_DECLARE_PUBLIC(QWizard)
public:
typedef QMap<int, QWizardPage *> PageMap;
enum Direction {
Backward,
Forward
};
inline QWizardPrivate()
: start(-1)
, current(-1)
, canContinue(false)
, canFinish(false)
, disableUpdatesCount(0)
, opts(0)
, buttonsHaveCustomLayout(false)
, titleFmt(Qt::AutoText)
, subTitleFmt(Qt::AutoText)
, placeholderWidget1(0)
, placeholderWidget2(0)
, headerWidget(0)
, watermarkLabel(0)
, titleLabel(0)
, subTitleLabel(0)
, bottomRuler(0)
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
, vistaInitPending(false)
, vistaState(QVistaHelper::Dirty)
, vistaStateChanged(false)
, inHandleAeroStyleChange(false)
#endif
, minimumWidth(0)
, minimumHeight(0)
, maximumWidth(QWIDGETSIZE_MAX)
, maximumHeight(QWIDGETSIZE_MAX)
{
for (int i = 0; i < QWizard::NButtons; ++i) {
btns[i] = 0;
#ifdef QT_SOFTKEYS_ENABLED
softKeys[i] = 0;
#endif
}
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
if (QSysInfo::WindowsVersion >= QSysInfo::WV_VISTA
&& QSysInfo::WindowsVersion < QSysInfo::WV_NT_based)
vistaInitPending = true;
#endif
}
void init();
void reset();
void cleanupPagesNotInHistory();
void addField(const QWizardField &field);
void removeFieldAt(int index);
void switchToPage(int newId, Direction direction);
QWizardLayoutInfo layoutInfoForCurrentPage();
void recreateLayout(const QWizardLayoutInfo &info);
void updateLayout();
void updateMinMaxSizes(const QWizardLayoutInfo &info);
void updateCurrentPage();
bool ensureButton(QWizard::WizardButton which) const;
void connectButton(QWizard::WizardButton which) const;
void updateButtonTexts();
void updateButtonLayout();
void setButtonLayout(const QWizard::WizardButton *array, int size);
bool buttonLayoutContains(QWizard::WizardButton which);
void updatePixmap(QWizard::WizardPixmap which);
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
bool vistaDisabled() const;
bool isVistaThemeEnabled(QVistaHelper::VistaState state) const;
void handleAeroStyleChange();
#endif
bool isVistaThemeEnabled() const;
void disableUpdates();
void enableUpdates();
void _q_emitCustomButtonClicked();
void _q_updateButtonStates();
void _q_handleFieldObjectDestroyed(QObject *);
void setStyle(QStyle *style);
#ifdef Q_WS_MAC
static QPixmap findDefaultBackgroundPixmap();
#endif
PageMap pageMap;
QVector<QWizardField> fields;
QMap<QString, int> fieldIndexMap;
QVector<QWizardDefaultProperty> defaultPropertyTable;
QList<int> history;
QSet<int> initialized; // ### remove and move bit to QWizardPage?
int start;
int current;
bool canContinue;
bool canFinish;
QWizardLayoutInfo layoutInfo;
int disableUpdatesCount;
QWizard::WizardStyle wizStyle;
QWizard::WizardOptions opts;
QMap<int, QString> buttonCustomTexts;
bool buttonsHaveCustomLayout;
QList<QWizard::WizardButton> buttonsCustomLayout;
Qt::TextFormat titleFmt;
Qt::TextFormat subTitleFmt;
mutable QPixmap defaultPixmaps[QWizard::NPixmaps];
union {
// keep in sync with QWizard::WizardButton
mutable struct {
QAbstractButton *back;
QAbstractButton *next;
QAbstractButton *commit;
QAbstractButton *finish;
QAbstractButton *cancel;
QAbstractButton *help;
} btn;
mutable QAbstractButton *btns[QWizard::NButtons];
};
QWizardAntiFlickerWidget *antiFlickerWidget;
QWidget *placeholderWidget1;
QWidget *placeholderWidget2;
QWizardHeader *headerWidget;
QLabel *watermarkLabel;
QFrame *pageFrame;
QLabel *titleLabel;
QLabel *subTitleLabel;
QWizardRuler *bottomRuler;
#ifdef QT_SOFTKEYS_ENABLED
mutable QAction *softKeys[QWizard::NButtons];
#endif
QVBoxLayout *pageVBoxLayout;
QHBoxLayout *buttonLayout;
QGridLayout *mainLayout;
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
QVistaHelper *vistaHelper;
bool vistaInitPending;
QVistaHelper::VistaState vistaState;
bool vistaStateChanged;
bool inHandleAeroStyleChange;
#endif
int minimumWidth;
int minimumHeight;
int maximumWidth;
int maximumHeight;
};
static QString buttonDefaultText(int wstyle, int which, const QWizardPrivate *wizardPrivate)
{
#if defined(QT_NO_STYLE_WINDOWSVISTA)
Q_UNUSED(wizardPrivate);
#endif
const bool macStyle = (wstyle == QWizard::MacStyle);
switch (which) {
case QWizard::BackButton:
return macStyle ? QWizard::tr("Go Back") : QWizard::tr("< &Back");
case QWizard::NextButton:
if (macStyle)
return QWizard::tr("Continue");
else
return wizardPrivate->isVistaThemeEnabled()
? QWizard::tr("&Next") : QWizard::tr("&Next >");
case QWizard::CommitButton:
return QWizard::tr("Commit");
case QWizard::FinishButton:
return macStyle ? QWizard::tr("Done") : QWizard::tr("&Finish");
case QWizard::CancelButton:
return QWizard::tr("Cancel");
case QWizard::HelpButton:
return macStyle ? QWizard::tr("Help") : QWizard::tr("&Help");
default:
return QString();
}
}
void QWizardPrivate::init()
{
Q_Q(QWizard);
antiFlickerWidget = new QWizardAntiFlickerWidget(q, this);
wizStyle = QWizard::WizardStyle(q->style()->styleHint(QStyle::SH_WizardStyle, 0, q));
if (wizStyle == QWizard::MacStyle) {
opts = (QWizard::NoDefaultButton | QWizard::NoCancelButton);
} else if (wizStyle == QWizard::ModernStyle) {
opts = QWizard::HelpButtonOnRight;
}
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
vistaHelper = new QVistaHelper(q);
#endif
// create these buttons right away; create the other buttons as necessary
ensureButton(QWizard::BackButton);
ensureButton(QWizard::NextButton);
ensureButton(QWizard::CommitButton);
ensureButton(QWizard::FinishButton);
pageFrame = new QFrame(antiFlickerWidget);
pageFrame->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
pageVBoxLayout = new QVBoxLayout(pageFrame);
pageVBoxLayout->setSpacing(0);
pageVBoxLayout->addSpacing(0);
QSpacerItem *spacerItem = new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding);
pageVBoxLayout->addItem(spacerItem);
buttonLayout = new QHBoxLayout;
mainLayout = new QGridLayout(antiFlickerWidget);
mainLayout->setSizeConstraint(QLayout::SetNoConstraint);
updateButtonLayout();
for (int i = 0; i < NFallbackDefaultProperties; ++i)
defaultPropertyTable.append(QWizardDefaultProperty(fallbackProperties[i].className,
fallbackProperties[i].property,
fallbackProperties[i].changedSignal));
}
void QWizardPrivate::reset()
{
Q_Q(QWizard);
if (current != -1) {
q->currentPage()->hide();
cleanupPagesNotInHistory();
for (int i = history.count() - 1; i >= 0; --i)
q->cleanupPage(history.at(i));
history.clear();
initialized.clear();
current = -1;
emit q->currentIdChanged(-1);
}
}
void QWizardPrivate::cleanupPagesNotInHistory()
{
Q_Q(QWizard);
const QSet<int> original = initialized;
QSet<int>::const_iterator i = original.constBegin();
QSet<int>::const_iterator end = original.constEnd();
for (; i != end; ++i) {
if (!history.contains(*i)) {
q->cleanupPage(*i);
initialized.remove(*i);
}
}
}
void QWizardPrivate::addField(const QWizardField &field)
{
Q_Q(QWizard);
QWizardField myField = field;
myField.resolve(defaultPropertyTable);
if (fieldIndexMap.contains(myField.name)) {
qWarning("QWizardPage::addField: Duplicate field '%s'", qPrintable(myField.name));
return;
}
fieldIndexMap.insert(myField.name, fields.count());
fields += myField;
if (myField.mandatory && !myField.changedSignal.isEmpty())
QObject::connect(myField.object, myField.changedSignal,
myField.page, SLOT(_q_maybeEmitCompleteChanged()));
QObject::connect(
myField.object, SIGNAL(destroyed(QObject*)), q,
SLOT(_q_handleFieldObjectDestroyed(QObject*)));
}
void QWizardPrivate::removeFieldAt(int index)
{
Q_Q(QWizard);
const QWizardField &field = fields.at(index);
fieldIndexMap.remove(field.name);
if (field.mandatory && !field.changedSignal.isEmpty())
QObject::disconnect(field.object, field.changedSignal,
field.page, SLOT(_q_maybeEmitCompleteChanged()));
QObject::disconnect(
field.object, SIGNAL(destroyed(QObject*)), q,
SLOT(_q_handleFieldObjectDestroyed(QObject*)));
fields.remove(index);
}
void QWizardPrivate::switchToPage(int newId, Direction direction)
{
Q_Q(QWizard);
disableUpdates();
int oldId = current;
if (QWizardPage *oldPage = q->currentPage()) {
oldPage->hide();
if (direction == Backward) {
if (!(opts & QWizard::IndependentPages)) {
q->cleanupPage(oldId);
initialized.remove(oldId);
}
Q_ASSERT(history.last() == oldId);
history.removeLast();
Q_ASSERT(history.last() == newId);
}
}
current = newId;
QWizardPage *newPage = q->currentPage();
if (newPage) {
if (direction == Forward) {
if (!initialized.contains(current)) {
initialized.insert(current);
q->initializePage(current);
}
history.append(current);
}
newPage->show();
}
canContinue = (q->nextId() != -1);
canFinish = (newPage && newPage->isFinalPage());
_q_updateButtonStates();
updateButtonTexts();
const QWizard::WizardButton nextOrCommit =
newPage && newPage->isCommitPage() ? QWizard::CommitButton : QWizard::NextButton;
QAbstractButton *nextOrFinishButton =
btns[canContinue ? nextOrCommit : QWizard::FinishButton];
QWidget *candidate = 0;
/*
If there is no default button and the Next or Finish button
is enabled, give focus directly to it as a convenience to the
user. This is the normal case on Mac OS X.
Otherwise, give the focus to the new page's first child that
can handle it. If there is no such child, give the focus to
Next or Finish.
*/
if ((opts & QWizard::NoDefaultButton) && nextOrFinishButton->isEnabled()) {
candidate = nextOrFinishButton;
} else if (newPage) {
candidate = iWantTheFocus(newPage);
}
if (!candidate)
candidate = nextOrFinishButton;
candidate->setFocus();
if (wizStyle == QWizard::MacStyle)
q->updateGeometry();
enableUpdates();
updateLayout();
emit q->currentIdChanged(current);
}
// keep in sync with QWizard::WizardButton
static const char * const buttonSlots[QWizard::NStandardButtons] = {
SLOT(back()), SLOT(next()), SLOT(next()), SLOT(accept()), SLOT(reject()),
SIGNAL(helpRequested())
};
QWizardLayoutInfo QWizardPrivate::layoutInfoForCurrentPage()
{
Q_Q(QWizard);
QStyle *style = q->style();
QWizardLayoutInfo info;
const int layoutHorizontalSpacing = style->pixelMetric(QStyle::PM_LayoutHorizontalSpacing);
info.topLevelMarginLeft = style->pixelMetric(QStyle::PM_LayoutLeftMargin, 0, q);
info.topLevelMarginRight = style->pixelMetric(QStyle::PM_LayoutRightMargin, 0, q);
info.topLevelMarginTop = style->pixelMetric(QStyle::PM_LayoutTopMargin, 0, q);
info.topLevelMarginBottom = style->pixelMetric(QStyle::PM_LayoutBottomMargin, 0, q);
info.childMarginLeft = style->pixelMetric(QStyle::PM_LayoutLeftMargin, 0, titleLabel);
info.childMarginRight = style->pixelMetric(QStyle::PM_LayoutRightMargin, 0, titleLabel);
info.childMarginTop = style->pixelMetric(QStyle::PM_LayoutTopMargin, 0, titleLabel);
info.childMarginBottom = style->pixelMetric(QStyle::PM_LayoutBottomMargin, 0, titleLabel);
info.hspacing = (layoutHorizontalSpacing == -1)
? style->layoutSpacing(QSizePolicy::DefaultType, QSizePolicy::DefaultType, Qt::Horizontal)
: layoutHorizontalSpacing;
info.vspacing = style->pixelMetric(QStyle::PM_LayoutVerticalSpacing);
info.buttonSpacing = (layoutHorizontalSpacing == -1)
? style->layoutSpacing(QSizePolicy::PushButton, QSizePolicy::PushButton, Qt::Horizontal)
: layoutHorizontalSpacing;
if (wizStyle == QWizard::MacStyle)
info.buttonSpacing = 12;
info.wizStyle = wizStyle;
if ((info.wizStyle == QWizard::AeroStyle)
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
&& (QVistaHelper::vistaState() == QVistaHelper::Classic || vistaDisabled())
#endif
)
info.wizStyle = QWizard::ModernStyle;
QString titleText;
QString subTitleText;
QPixmap backgroundPixmap;
QPixmap watermarkPixmap;
if (QWizardPage *page = q->currentPage()) {
titleText = page->title();
subTitleText = page->subTitle();
backgroundPixmap = page->pixmap(QWizard::BackgroundPixmap);
watermarkPixmap = page->pixmap(QWizard::WatermarkPixmap);
}
info.header = (info.wizStyle == QWizard::ClassicStyle || info.wizStyle == QWizard::ModernStyle)
&& !(opts & QWizard::IgnoreSubTitles) && !subTitleText.isEmpty();
info.watermark = (info.wizStyle != QWizard::MacStyle) && (info.wizStyle != QWizard::AeroStyle)
&& !watermarkPixmap.isNull();
info.title = !info.header && !titleText.isEmpty();
info.subTitle = !(opts & QWizard::IgnoreSubTitles) && !info.header && !subTitleText.isEmpty();
info.extension = info.watermark && (opts & QWizard::ExtendedWatermarkPixmap);
return info;
}
void QWizardPrivate::recreateLayout(const QWizardLayoutInfo &info)
{
Q_Q(QWizard);
/*
Start by undoing the main layout.
*/
for (int i = mainLayout->count() - 1; i >= 0; --i) {
QLayoutItem *item = mainLayout->takeAt(i);
if (item->layout()) {
item->layout()->setParent(0);
} else {
delete item;
}
}
for (int i = mainLayout->columnCount() - 1; i >= 0; --i)
mainLayout->setColumnMinimumWidth(i, 0);
for (int i = mainLayout->rowCount() - 1; i >= 0; --i)
mainLayout->setRowMinimumHeight(i, 0);
/*
Now, recreate it.
*/
bool mac = (info.wizStyle == QWizard::MacStyle);
bool classic = (info.wizStyle == QWizard::ClassicStyle);
bool modern = (info.wizStyle == QWizard::ModernStyle);
bool aero = (info.wizStyle == QWizard::AeroStyle);
int deltaMarginLeft = info.topLevelMarginLeft - info.childMarginLeft;
int deltaMarginRight = info.topLevelMarginRight - info.childMarginRight;
int deltaMarginTop = info.topLevelMarginTop - info.childMarginTop;
int deltaMarginBottom = info.topLevelMarginBottom - info.childMarginBottom;
int deltaVSpacing = info.topLevelMarginBottom - info.vspacing;
int row = 0;
int numColumns;
if (mac) {
numColumns = 3;
} else if (info.watermark) {
numColumns = 2;
} else {
numColumns = 1;
}
int pageColumn = qMin(1, numColumns - 1);
if (mac) {
mainLayout->setMargin(0);
mainLayout->setSpacing(0);
buttonLayout->setContentsMargins(MacLayoutLeftMargin, MacButtonTopMargin, MacLayoutRightMargin, MacLayoutBottomMargin);
pageVBoxLayout->setMargin(7);
} else {
if (modern) {
mainLayout->setMargin(0);
mainLayout->setSpacing(0);
pageVBoxLayout->setContentsMargins(deltaMarginLeft, deltaMarginTop,
deltaMarginRight, deltaMarginBottom);
buttonLayout->setContentsMargins(info.topLevelMarginLeft, info.topLevelMarginTop,
info.topLevelMarginRight, info.topLevelMarginBottom);
} else {
mainLayout->setContentsMargins(info.topLevelMarginLeft, info.topLevelMarginTop,
info.topLevelMarginRight, info.topLevelMarginBottom);
mainLayout->setHorizontalSpacing(info.hspacing);
mainLayout->setVerticalSpacing(info.vspacing);
pageVBoxLayout->setContentsMargins(0, 0, 0, 0);
buttonLayout->setContentsMargins(0, 0, 0, 0);
}
}
buttonLayout->setSpacing(info.buttonSpacing);
if (info.header) {
if (!headerWidget)
headerWidget = new QWizardHeader(antiFlickerWidget);
headerWidget->setAutoFillBackground(modern);
mainLayout->addWidget(headerWidget, row++, 0, 1, numColumns);
}
if (headerWidget)
headerWidget->setVisible(info.header);
int watermarkStartRow = row;
if (mac)
mainLayout->setRowMinimumHeight(row++, 10);
if (info.title) {
if (!titleLabel) {
titleLabel = new QLabel(antiFlickerWidget);
titleLabel->setBackgroundRole(QPalette::Base);
titleLabel->setWordWrap(true);
}
QFont titleFont = q->font();
titleFont.setPointSize(titleFont.pointSize() + (mac ? 3 : 4));
titleFont.setBold(true);
titleLabel->setPalette(QPalette());
if (aero) {
// ### hardcoded for now:
titleFont = QFont(QLatin1String("Segoe UI"), 12);
QPalette pal(titleLabel->palette());
pal.setColor(QPalette::Text, "#003399");
titleLabel->setPalette(pal);
}
titleLabel->setFont(titleFont);
const int aeroTitleIndent = 25; // ### hardcoded for now - should be calculated somehow
if (aero)
titleLabel->setIndent(aeroTitleIndent);
else if (mac)
titleLabel->setIndent(2);
else if (classic)
titleLabel->setIndent(info.childMarginLeft);
else
titleLabel->setIndent(info.topLevelMarginLeft);
if (modern) {
if (!placeholderWidget1) {
placeholderWidget1 = new QWidget(antiFlickerWidget);
placeholderWidget1->setBackgroundRole(QPalette::Base);
}
placeholderWidget1->setFixedHeight(info.topLevelMarginLeft + 2);
mainLayout->addWidget(placeholderWidget1, row++, pageColumn);
}
mainLayout->addWidget(titleLabel, row++, pageColumn);
if (modern) {
if (!placeholderWidget2) {
placeholderWidget2 = new QWidget(antiFlickerWidget);
placeholderWidget2->setBackgroundRole(QPalette::Base);
}
placeholderWidget2->setFixedHeight(5);
mainLayout->addWidget(placeholderWidget2, row++, pageColumn);
}
if (mac)
mainLayout->setRowMinimumHeight(row++, 7);
}
if (placeholderWidget1)
placeholderWidget1->setVisible(info.title && modern);
if (placeholderWidget2)
placeholderWidget2->setVisible(info.title && modern);
if (info.subTitle) {
if (!subTitleLabel) {
subTitleLabel = new QLabel(pageFrame);
subTitleLabel->setWordWrap(true);
subTitleLabel->setContentsMargins(info.childMarginLeft , 0,
info.childMarginRight , 0);
pageVBoxLayout->insertWidget(1, subTitleLabel);
}
}
// ### try to replace with margin.
changeSpacerSize(pageVBoxLayout, 0, 0, info.subTitle ? info.childMarginLeft : 0);
int hMargin = mac ? 1 : 0;
int vMargin = hMargin;
pageFrame->setFrameStyle(mac ? (QFrame::Box | QFrame::Raised) : QFrame::NoFrame);
pageFrame->setLineWidth(0);
pageFrame->setMidLineWidth(hMargin);
if (info.header) {
if (modern) {
hMargin = info.topLevelMarginLeft;
vMargin = deltaMarginBottom;
} else if (classic) {
hMargin = deltaMarginLeft + ClassicHMargin;
vMargin = 0;
}
}
if (aero) {
int leftMargin = 18; // ### hardcoded for now - should be calculated somehow
int topMargin = vMargin;
int rightMargin = hMargin; // ### for now
int bottomMargin = vMargin;
pageFrame->setContentsMargins(leftMargin, topMargin, rightMargin, bottomMargin);
} else {
pageFrame->setContentsMargins(hMargin, vMargin, hMargin, vMargin);
}
if (info.watermark && !watermarkLabel) {
watermarkLabel = new QLabel(antiFlickerWidget);
watermarkLabel->setBackgroundRole(QPalette::Base);
watermarkLabel->setMinimumHeight(1);
watermarkLabel->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Expanding);
watermarkLabel->setAlignment(Qt::AlignLeft | Qt::AlignTop);
}
//bool wasSemiTransparent = pageFrame->testAttribute(Qt::WA_SetPalette);
const bool wasSemiTransparent =
pageFrame->palette().brush(QPalette::Window).color().alpha() < 255
|| pageFrame->palette().brush(QPalette::Base).color().alpha() < 255;
if (mac) {
if (!wasSemiTransparent) {
QPalette pal = pageFrame->palette();
pal.setBrush(QPalette::Window, QColor(255, 255, 255, 153));
// ### The next line is required to ensure visual semitransparency when
// ### switching from ModernStyle to MacStyle. See TAG1 below.
pal.setBrush(QPalette::Base, QColor(255, 255, 255, 153));
pageFrame->setPalette(pal);
pageFrame->setAutoFillBackground(true);
antiFlickerWidget->setAutoFillBackground(false);
}
} else {
if (wasSemiTransparent)
pageFrame->setPalette(QPalette());
bool baseBackground = (modern && !info.header); // ### TAG1
pageFrame->setBackgroundRole(baseBackground ? QPalette::Base : QPalette::Window);
if (titleLabel)
titleLabel->setAutoFillBackground(baseBackground);
pageFrame->setAutoFillBackground(baseBackground);
if (watermarkLabel)
watermarkLabel->setAutoFillBackground(baseBackground);
if (placeholderWidget1)
placeholderWidget1->setAutoFillBackground(baseBackground);
if (placeholderWidget2)
placeholderWidget2->setAutoFillBackground(baseBackground);
if (aero) {
QPalette pal = pageFrame->palette();
pal.setBrush(QPalette::Window, QColor(255, 255, 255));
pageFrame->setPalette(pal);
pageFrame->setAutoFillBackground(true);
pal = antiFlickerWidget->palette();
pal.setBrush(QPalette::Window, QColor(255, 255, 255));
antiFlickerWidget->setPalette(pal);
antiFlickerWidget->setAutoFillBackground(true);
}
}
mainLayout->addWidget(pageFrame, row++, pageColumn);
int watermarkEndRow = row;
if (classic)
mainLayout->setRowMinimumHeight(row++, deltaVSpacing);
if (aero) {
buttonLayout->setContentsMargins(9, 9, 9, 9);
mainLayout->setContentsMargins(0, 11, 0, 0);
}
int buttonStartColumn = info.extension ? 1 : 0;
int buttonNumColumns = info.extension ? 1 : numColumns;
if (classic || modern) {
if (!bottomRuler)
bottomRuler = new QWizardRuler(antiFlickerWidget);
mainLayout->addWidget(bottomRuler, row++, buttonStartColumn, 1, buttonNumColumns);
}
if (classic)
mainLayout->setRowMinimumHeight(row++, deltaVSpacing);
mainLayout->addLayout(buttonLayout, row++, buttonStartColumn, 1, buttonNumColumns);
if (info.watermark) {
if (info.extension)
watermarkEndRow = row;
mainLayout->addWidget(watermarkLabel, watermarkStartRow, 0,
watermarkEndRow - watermarkStartRow, 1);
}
mainLayout->setColumnMinimumWidth(0, mac && !info.watermark ? 181 : 0);
if (mac)
mainLayout->setColumnMinimumWidth(2, 21);
if (headerWidget)
headerWidget->setVisible(info.header);
if (titleLabel)
titleLabel->setVisible(info.title);
if (subTitleLabel)
subTitleLabel->setVisible(info.subTitle);
if (bottomRuler)
bottomRuler->setVisible(classic || modern);
if (watermarkLabel)
watermarkLabel->setVisible(info.watermark);
layoutInfo = info;
}
void QWizardPrivate::updateLayout()
{
Q_Q(QWizard);
disableUpdates();
QWizardLayoutInfo info = layoutInfoForCurrentPage();
if (layoutInfo != info)
recreateLayout(info);
QWizardPage *page = q->currentPage();
// If the page can expand vertically, let it stretch "infinitely" more
// than the QSpacerItem at the bottom. Otherwise, let the QSpacerItem
// stretch "infinitely" more than the page. Change the bottom item's
// policy accordingly. The case that the page has no layout is basically
// for Designer, only.
if (page) {
bool expandPage = !page->layout();
if (!expandPage) {
const QLayoutItem *pageItem = pageVBoxLayout->itemAt(pageVBoxLayout->indexOf(page));
expandPage = pageItem->expandingDirections() & Qt::Vertical;
}
QSpacerItem *bottomSpacer = pageVBoxLayout->itemAt(pageVBoxLayout->count() - 1)->spacerItem();
Q_ASSERT(bottomSpacer);
bottomSpacer->changeSize(0, 0, QSizePolicy::Ignored, expandPage ? QSizePolicy::Ignored : QSizePolicy::MinimumExpanding);
pageVBoxLayout->invalidate();
}
if (info.header) {
Q_ASSERT(page);
headerWidget->setup(info, page->title(), page->subTitle(),
page->pixmap(QWizard::LogoPixmap), page->pixmap(QWizard::BannerPixmap),
titleFmt, subTitleFmt);
}
if (info.watermark) {
Q_ASSERT(page);
watermarkLabel->setPixmap(page->pixmap(QWizard::WatermarkPixmap));
}
if (info.title) {
Q_ASSERT(page);
titleLabel->setTextFormat(titleFmt);
titleLabel->setText(page->title());
}
if (info.subTitle) {
Q_ASSERT(page);
subTitleLabel->setTextFormat(subTitleFmt);
subTitleLabel->setText(page->subTitle());
}
enableUpdates();
updateMinMaxSizes(info);
}
void QWizardPrivate::updateMinMaxSizes(const QWizardLayoutInfo &info)
{
Q_Q(QWizard);
int extraHeight = 0;
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
if (isVistaThemeEnabled())
extraHeight = vistaHelper->titleBarSize() + vistaHelper->topOffset();
#endif
QSize minimumSize = mainLayout->totalMinimumSize() + QSize(0, extraHeight);
QSize maximumSize = mainLayout->totalMaximumSize();
if (info.header && headerWidget->maximumWidth() != QWIDGETSIZE_MAX) {
minimumSize.setWidth(headerWidget->maximumWidth());
maximumSize.setWidth(headerWidget->maximumWidth());
}
if (info.watermark) {
minimumSize.setHeight(mainLayout->totalSizeHint().height());
maximumSize.setHeight(mainLayout->totalSizeHint().height());
}
if (q->minimumWidth() == minimumWidth) {
minimumWidth = minimumSize.width();
q->setMinimumWidth(minimumWidth);
}
if (q->minimumHeight() == minimumHeight) {
minimumHeight = minimumSize.height();
q->setMinimumHeight(minimumHeight);
}
if (q->maximumWidth() == maximumWidth) {
maximumWidth = maximumSize.width();
q->setMaximumWidth(maximumWidth);
}
if (q->maximumHeight() == maximumHeight) {
maximumHeight = maximumSize.height();
q->setMaximumHeight(maximumHeight);
}
}
void QWizardPrivate::updateCurrentPage()
{
Q_Q(QWizard);
if (q->currentPage()) {
canContinue = (q->nextId() != -1);
canFinish = q->currentPage()->isFinalPage();
} else {
canContinue = false;
canFinish = false;
}
_q_updateButtonStates();
updateButtonTexts();
}
bool QWizardPrivate::ensureButton(QWizard::WizardButton which) const
{
Q_Q(const QWizard);
if (uint(which) >= QWizard::NButtons)
return false;
if (!btns[which]) {
QPushButton *pushButton = new QPushButton(antiFlickerWidget);
QStyle *style = q->style();
if (style != QApplication::style()) // Propagate style
pushButton->setStyle(style);
// Make navigation buttons detectable as passive interactor in designer
switch (which) {
case QWizard::CommitButton:
case QWizard::FinishButton:
case QWizard::CancelButton:
break;
default: {
QString objectName = QLatin1String("__qt__passive_wizardbutton");
objectName += QString::number(which);
pushButton->setObjectName(objectName);
}
break;
}
#ifdef Q_WS_MAC
pushButton->setAutoDefault(false);
#endif
pushButton->hide();
#ifdef Q_CC_HPACC
const_cast<QWizardPrivate *>(this)->btns[which] = pushButton;
#else
btns[which] = pushButton;
#endif
if (which < QWizard::NStandardButtons)
pushButton->setText(buttonDefaultText(wizStyle, which, this));
#ifdef QT_SOFTKEYS_ENABLED
QAction *softKey = new QAction(pushButton->text(), pushButton);
QAction::SoftKeyRole softKeyRole;
switch(which) {
case QWizard::NextButton:
case QWizard::FinishButton:
case QWizard::CancelButton:
softKeyRole = QAction::NegativeSoftKey;
break;
case QWizard::BackButton:
case QWizard::CommitButton:
case QWizard::HelpButton:
case QWizard::CustomButton1:
case QWizard::CustomButton2:
case QWizard::CustomButton3:
default:
softKeyRole = QAction::PositiveSoftKey;
break;
}
softKey->setSoftKeyRole(softKeyRole);
softKeys[which] = softKey;
#endif
connectButton(which);
}
return true;
}
void QWizardPrivate::connectButton(QWizard::WizardButton which) const
{
Q_Q(const QWizard);
if (which < QWizard::NStandardButtons) {
QObject::connect(btns[which], SIGNAL(clicked()), q, buttonSlots[which]);
} else {
QObject::connect(btns[which], SIGNAL(clicked()), q, SLOT(_q_emitCustomButtonClicked()));
}
#ifdef QT_SOFTKEYS_ENABLED
QObject::connect(softKeys[which], SIGNAL(triggered()), btns[which], SIGNAL(clicked()));
#endif
}
void QWizardPrivate::updateButtonTexts()
{
Q_Q(QWizard);
for (int i = 0; i < QWizard::NButtons; ++i) {
if (btns[i]) {
if (q->currentPage() && (q->currentPage()->d_func()->buttonCustomTexts.contains(i)))
btns[i]->setText(q->currentPage()->d_func()->buttonCustomTexts.value(i));
else if (buttonCustomTexts.contains(i))
btns[i]->setText(buttonCustomTexts.value(i));
else if (i < QWizard::NStandardButtons)
btns[i]->setText(buttonDefaultText(wizStyle, i, this));
#ifdef QT_SOFTKEYS_ENABLED
softKeys[i]->setText(btns[i]->text());
#endif
}
}
}
void QWizardPrivate::updateButtonLayout()
{
if (buttonsHaveCustomLayout) {
QVarLengthArray<QWizard::WizardButton> array(buttonsCustomLayout.count());
for (int i = 0; i < buttonsCustomLayout.count(); ++i)
array[i] = buttonsCustomLayout.at(i);
setButtonLayout(array.constData(), array.count());
} else {
// Positions:
// Help Stretch Custom1 Custom2 Custom3 Cancel Back Next Commit Finish Cancel Help
const int ArraySize = 12;
QWizard::WizardButton array[ArraySize];
memset(array, -1, sizeof(array));
Q_ASSERT(array[0] == QWizard::NoButton);
if (opts & QWizard::HaveHelpButton) {
int i = (opts & QWizard::HelpButtonOnRight) ? 11 : 0;
array[i] = QWizard::HelpButton;
}
array[1] = QWizard::Stretch;
if (opts & QWizard::HaveCustomButton1)
array[2] = QWizard::CustomButton1;
if (opts & QWizard::HaveCustomButton2)
array[3] = QWizard::CustomButton2;
if (opts & QWizard::HaveCustomButton3)
array[4] = QWizard::CustomButton3;
if (!(opts & QWizard::NoCancelButton)) {
int i = (opts & QWizard::CancelButtonOnLeft) ? 5 : 10;
array[i] = QWizard::CancelButton;
}
array[6] = QWizard::BackButton;
array[7] = QWizard::NextButton;
array[8] = QWizard::CommitButton;
array[9] = QWizard::FinishButton;
setButtonLayout(array, ArraySize);
}
}
void QWizardPrivate::setButtonLayout(const QWizard::WizardButton *array, int size)
{
QWidget *prev = pageFrame;
for (int i = buttonLayout->count() - 1; i >= 0; --i) {
QLayoutItem *item = buttonLayout->takeAt(i);
if (QWidget *widget = item->widget())
widget->hide();
delete item;
}
for (int i = 0; i < size; ++i) {
QWizard::WizardButton which = array[i];
if (which == QWizard::Stretch) {
buttonLayout->addStretch(1);
} else if (which != QWizard::NoButton) {
ensureButton(which);
buttonLayout->addWidget(btns[which]);
// Back, Next, Commit, and Finish are handled in _q_updateButtonStates()
if (which != QWizard::BackButton && which != QWizard::NextButton
&& which != QWizard::CommitButton && which != QWizard::FinishButton)
btns[which]->show();
if (prev)
QWidget::setTabOrder(prev, btns[which]);
prev = btns[which];
}
}
_q_updateButtonStates();
}
bool QWizardPrivate::buttonLayoutContains(QWizard::WizardButton which)
{
return !buttonsHaveCustomLayout || buttonsCustomLayout.contains(which);
}
void QWizardPrivate::updatePixmap(QWizard::WizardPixmap which)
{
Q_Q(QWizard);
if (which == QWizard::BackgroundPixmap) {
if (wizStyle == QWizard::MacStyle) {
q->update();
q->updateGeometry();
}
} else {
updateLayout();
}
}
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
bool QWizardPrivate::vistaDisabled() const
{
Q_Q(const QWizard);
const QVariant v = q->property("_q_wizard_vista_off");
return v.isValid() && v.toBool();
}
bool QWizardPrivate::isVistaThemeEnabled(QVistaHelper::VistaState state) const
{
return wizStyle == QWizard::AeroStyle
&& QVistaHelper::vistaState() == state
&& !vistaDisabled();
}
void QWizardPrivate::handleAeroStyleChange()
{
Q_Q(QWizard);
if (inHandleAeroStyleChange)
return; // prevent recursion
inHandleAeroStyleChange = true;
vistaHelper->disconnectBackButton();
q->removeEventFilter(vistaHelper);
if (isVistaThemeEnabled()) {
if (isVistaThemeEnabled(QVistaHelper::VistaAero)) {
vistaHelper->setDWMTitleBar(QVistaHelper::ExtendedTitleBar);
q->installEventFilter(vistaHelper);
q->setMouseTracking(true);
antiFlickerWidget->move(0, vistaHelper->titleBarSize() + vistaHelper->topOffset());
vistaHelper->backButton()->move(
0, vistaHelper->topOffset() // ### should ideally work without the '+ 1'
- qMin(vistaHelper->topOffset(), vistaHelper->topPadding() + 1));
} else {
vistaHelper->setDWMTitleBar(QVistaHelper::NormalTitleBar);
q->setMouseTracking(true);
antiFlickerWidget->move(0, vistaHelper->topOffset());
vistaHelper->backButton()->move(0, -1); // ### should ideally work with (0, 0)
}
vistaHelper->setTitleBarIconAndCaptionVisible(false);
QObject::connect(
vistaHelper->backButton(), SIGNAL(clicked()), q, buttonSlots[QWizard::BackButton]);
vistaHelper->backButton()->show();
} else {
q->setMouseTracking(true); // ### original value possibly different
#ifndef QT_NO_CURSOR
q->unsetCursor(); // ### ditto
#endif
antiFlickerWidget->move(0, 0);
vistaHelper->hideBackButton();
vistaHelper->setTitleBarIconAndCaptionVisible(true);
}
_q_updateButtonStates();
if (q->isVisible())
vistaHelper->setWindowPosHack();
inHandleAeroStyleChange = false;
}
#endif
bool QWizardPrivate::isVistaThemeEnabled() const
{
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
return isVistaThemeEnabled(QVistaHelper::VistaAero)
|| isVistaThemeEnabled(QVistaHelper::VistaBasic);
#else
return false;
#endif
}
void QWizardPrivate::disableUpdates()
{
Q_Q(QWizard);
if (disableUpdatesCount++ == 0) {
q->setUpdatesEnabled(false);
antiFlickerWidget->hide();
}
}
void QWizardPrivate::enableUpdates()
{
Q_Q(QWizard);
if (--disableUpdatesCount == 0) {
antiFlickerWidget->show();
q->setUpdatesEnabled(true);
}
}
void QWizardPrivate::_q_emitCustomButtonClicked()
{
Q_Q(QWizard);
QObject *button = q->sender();
for (int i = QWizard::NStandardButtons; i < QWizard::NButtons; ++i) {
if (btns[i] == button) {
emit q->customButtonClicked(QWizard::WizardButton(i));
break;
}
}
}
void QWizardPrivate::_q_updateButtonStates()
{
Q_Q(QWizard);
disableUpdates();
const QWizardPage *page = q->currentPage();
bool complete = page && page->isComplete();
btn.back->setEnabled(history.count() > 1
&& !q->page(history.at(history.count() - 2))->isCommitPage()
&& (!canFinish || !(opts & QWizard::DisabledBackButtonOnLastPage)));
btn.next->setEnabled(canContinue && complete);
btn.commit->setEnabled(canContinue && complete);
btn.finish->setEnabled(canFinish && complete);
const bool backButtonVisible = buttonLayoutContains(QWizard::BackButton)
&& (history.count() > 1 || !(opts & QWizard::NoBackButtonOnStartPage))
&& (canContinue || !(opts & QWizard::NoBackButtonOnLastPage));
bool commitPage = page && page->isCommitPage();
btn.back->setVisible(backButtonVisible);
btn.next->setVisible(buttonLayoutContains(QWizard::NextButton) && !commitPage
&& (canContinue || (opts & QWizard::HaveNextButtonOnLastPage)));
btn.commit->setVisible(buttonLayoutContains(QWizard::CommitButton) && commitPage
&& canContinue);
btn.finish->setVisible(buttonLayoutContains(QWizard::FinishButton)
&& (canFinish || (opts & QWizard::HaveFinishButtonOnEarlyPages)));
bool useDefault = !(opts & QWizard::NoDefaultButton);
if (QPushButton *nextPush = qobject_cast<QPushButton *>(btn.next))
nextPush->setDefault(canContinue && useDefault && !commitPage);
if (QPushButton *commitPush = qobject_cast<QPushButton *>(btn.commit))
commitPush->setDefault(canContinue && useDefault && commitPage);
if (QPushButton *finishPush = qobject_cast<QPushButton *>(btn.finish))
finishPush->setDefault(!canContinue && useDefault);
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
if (isVistaThemeEnabled()) {
vistaHelper->backButton()->setEnabled(btn.back->isEnabled());
vistaHelper->backButton()->setVisible(backButtonVisible);
btn.back->setVisible(false);
}
#endif
#ifdef QT_SOFTKEYS_ENABLED
QAbstractButton *wizardButton;
for (int i = 0; i < QWizard::NButtons; ++i) {
wizardButton = btns[i];
if (wizardButton && !wizardButton->testAttribute(Qt::WA_WState_Hidden)) {
wizardButton->hide();
q->addAction(softKeys[i]);
} else {
q->removeAction(softKeys[i]);
}
}
#endif
enableUpdates();
}
void QWizardPrivate::_q_handleFieldObjectDestroyed(QObject *object)
{
QVector<QWizardField>::iterator it = fields.begin();
while (it != fields.end()) {
const QWizardField &field = *it;
if (field.object == object) {
fieldIndexMap.remove(field.name);
it = fields.erase(it);
} else {
++it;
}
}
}
void QWizardPrivate::setStyle(QStyle *style)
{
for (int i = 0; i < QWizard::NButtons; i++)
if (btns[i])
btns[i]->setStyle(style);
const PageMap::const_iterator pcend = pageMap.constEnd();
for (PageMap::const_iterator it = pageMap.constBegin(); it != pcend; ++it)
it.value()->setStyle(style);
}
#ifdef Q_WS_MAC
QPixmap QWizardPrivate::findDefaultBackgroundPixmap()
{
QCFType<CFURLRef> url;
const int ExpectedImageWidth = 242;
const int ExpectedImageHeight = 414;
if (LSFindApplicationForInfo(kLSUnknownCreator, CFSTR("com.apple.KeyboardSetupAssistant"),
0, 0, &url) == noErr) {
QCFType<CFBundleRef> bundle = CFBundleCreate(kCFAllocatorDefault, url);
if (bundle) {
url = CFBundleCopyResourceURL(bundle, CFSTR("Background"), CFSTR("tif"), 0);
if (url) {
QCFType<CGImageSourceRef> imageSource = CGImageSourceCreateWithURL(url, 0);
QCFType<CGImageRef> image = CGImageSourceCreateImageAtIndex(imageSource, 0, 0);
if (image) {
int width = CGImageGetWidth(image);
int height = CGImageGetHeight(image);
if (width == ExpectedImageWidth && height == ExpectedImageHeight)
return QPixmap::fromMacCGImageRef(image);
}
}
}
}
return QPixmap();
}
#endif
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
void QWizardAntiFlickerWidget::paintEvent(QPaintEvent *)
{
if (wizardPrivate->isVistaThemeEnabled()) {
int leftMargin, topMargin, rightMargin, bottomMargin;
wizardPrivate->buttonLayout->getContentsMargins(
&leftMargin, &topMargin, &rightMargin, &bottomMargin);
const int buttonLayoutTop = wizardPrivate->buttonLayout->contentsRect().top() - topMargin;
QPainter painter(this);
const QBrush brush(QColor(240, 240, 240)); // ### hardcoded for now
painter.fillRect(0, buttonLayoutTop, width(), height() - buttonLayoutTop, brush);
painter.setPen(QPen(QBrush(QColor(223, 223, 223)), 0)); // ### hardcoded for now
painter.drawLine(0, buttonLayoutTop, width(), buttonLayoutTop);
if (wizardPrivate->isVistaThemeEnabled(QVistaHelper::VistaBasic)) {
if (window()->isActiveWindow())
painter.setPen(QPen(QBrush(QColor(169, 191, 214)), 0)); // ### hardcoded for now
else
painter.setPen(QPen(QBrush(QColor(182, 193, 204)), 0)); // ### hardcoded for now
painter.drawLine(0, 0, width(), 0);
}
}
}
#endif
/*!
\class QWizard
\since 4.3
\brief The QWizard class provides a framework for wizards.
A wizard (also called an assistant on Mac OS X) is a special type
of input dialog that consists of a sequence of pages. A wizard's
purpose is to guide the user through a process step by step.
Wizards are useful for complex or infrequent tasks that users may
find difficult to learn.
QWizard inherits QDialog and represents a wizard. Each page is a
QWizardPage (a QWidget subclass). To create your own wizards, you
can use these classes directly, or you can subclass them for more
control.
Topics:
\tableofcontents
\section1 A Trivial Example
The following example illustrates how to create wizard pages and
add them to a wizard. For more advanced examples, see
\l{dialogs/classwizard}{Class Wizard} and \l{dialogs/licensewizard}{License
Wizard}.
\snippet examples/dialogs/trivialwizard/trivialwizard.cpp 1
\snippet examples/dialogs/trivialwizard/trivialwizard.cpp 3
\dots
\snippet examples/dialogs/trivialwizard/trivialwizard.cpp 4
\codeline
\snippet examples/dialogs/trivialwizard/trivialwizard.cpp 5
\snippet examples/dialogs/trivialwizard/trivialwizard.cpp 7
\dots
\snippet examples/dialogs/trivialwizard/trivialwizard.cpp 8
\codeline
\snippet examples/dialogs/trivialwizard/trivialwizard.cpp 10
\section1 Wizard Look and Feel
QWizard supports four wizard looks:
\list
\o ClassicStyle
\o ModernStyle
\o MacStyle
\o AeroStyle
\endlist
You can explicitly set the look to use using setWizardStyle()
(e.g., if you want the same look on all platforms).
\table
\header \o ClassicStyle
\o ModernStyle
\o MacStyle
\o AeroStyle
\row \o \inlineimage qtwizard-classic1.png
\o \inlineimage qtwizard-modern1.png
\o \inlineimage qtwizard-mac1.png
\o \inlineimage qtwizard-aero1.png
\row \o \inlineimage qtwizard-classic2.png
\o \inlineimage qtwizard-modern2.png
\o \inlineimage qtwizard-mac2.png
\o \inlineimage qtwizard-aero2.png
\endtable
Note: AeroStyle has effect only on a Windows Vista system with alpha compositing enabled.
ModernStyle is used as a fallback when this condition is not met.
In addition to the wizard style, there are several options that
control the look and feel of the wizard. These can be set using
setOption() or setOptions(). For example, HaveHelpButton makes
QWizard show a \gui Help button along with the other wizard
buttons.
You can even change the order of the wizard buttons to any
arbitrary order using setButtonLayout(), and you can add up to
three custom buttons (e.g., a \gui Print button) to the button
row. This is achieved by calling setButton() or setButtonText()
with CustomButton1, CustomButton2, or CustomButton3 to set up the
button, and by enabling the HaveCustomButton1, HaveCustomButton2,
or HaveCustomButton3 options. Whenever the user clicks a custom
button, customButtonClicked() is emitted. For example:
\snippet examples/dialogs/licensewizard/licensewizard.cpp 29
\section1 Elements of a Wizard Page
Wizards consist of a sequence of \l{QWizardPage}s. At any time,
only one page is shown. A page has the following attributes:
\list
\o A \l{QWizardPage::}{title}.
\o A \l{QWizardPage::}{subTitle}.
\o A set of pixmaps, which may or may not be honored, depending
on the wizard's style:
\list
\o WatermarkPixmap (used by ClassicStyle and ModernStyle)
\o BannerPixmap (used by ModernStyle)
\o LogoPixmap (used by ClassicStyle and ModernStyle)
\o BackgroundPixmap (used by MacStyle)
\endlist
\endlist
The diagram belows shows how QWizard renders these attributes,
assuming they are all present and ModernStyle is used:
\image qtwizard-nonmacpage.png
When a \l{QWizardPage::}{subTitle} is set, QWizard displays it
in a header, in which case it also uses the BannerPixmap and the
LogoPixmap to decorate the header. The WatermarkPixmap is
displayed on the left side, below the header. At the bottom,
there is a row of buttons allowing the user to navigate through
the pages.
The page itself (the \l{QWizardPage} widget) occupies the area
between the header, the watermark, and the button row. Typically,
the page is a QWizardPage on which a QGridLayout is installed,
with standard child widgets (\l{QLabel}s, \l{QLineEdit}s, etc.).
If the wizard's style is MacStyle, the page looks radically
different:
\image qtwizard-macpage.png
The watermark, banner, and logo pixmaps are ignored by the
MacStyle. If the BackgroundPixmap is set, it is used as the
background for the wizard; otherwise, a default "assistant" image
is used.
The title and subtitle are set by calling
QWizardPage::setTitle() and QWizardPage::setSubTitle() on the
individual pages. They may be plain text or HTML (see titleFormat
and subTitleFormat). The pixmaps can be set globally for the
entire wizard using setPixmap(), or on a per-page basis using
QWizardPage::setPixmap().
\target field mechanism
\section1 Registering and Using Fields
In many wizards, the contents of a page may affect the default
values of the fields of a later page. To make it easy to
communicate between pages, QWizard supports a "field" mechanism
that allows you to register a field (e.g., a QLineEdit) on a page
and to access its value from any page. It is also possible to
specify mandatory fields (i.e., fields that must be filled before
the user can advance to the next page).
To register a field, call QWizardPage::registerField() field.
For example:
\snippet examples/dialogs/classwizard/classwizard.cpp 8
\dots
\snippet examples/dialogs/classwizard/classwizard.cpp 10
\snippet examples/dialogs/classwizard/classwizard.cpp 11
\dots
\snippet examples/dialogs/classwizard/classwizard.cpp 13
The above code registers three fields, \c className, \c
baseClass, and \c qobjectMacro, which are associated with three
child widgets. The asterisk (\c *) next to \c className denotes a
mandatory field.
\target initialize page
The fields of any page are accessible from any other page. For
example:
\snippet examples/dialogs/classwizard/classwizard.cpp 17
Here, we call QWizardPage::field() to access the contents of the
\c className field (which was defined in the \c ClassInfoPage)
and use it to initialize the \c OuputFilePage. The field's
contents is returned as a QVariant.
When we create a field using QWizardPage::registerField(), we
pass a unique field name and a widget. We can also provide a Qt
property name and a "changed" signal (a signal that is emitted
when the property changes) as third and fourth arguments;
however, this is not necessary for the most common Qt widgets,
such as QLineEdit, QCheckBox, and QComboBox, because QWizard
knows which properties to look for.
\target mandatory fields
If an asterisk (\c *) is appended to the name when the property
is registered, the field is a \e{mandatory field}. When a page has
mandatory fields, the \gui Next and/or \gui Finish buttons are
enabled only when all mandatory fields are filled.
To consider a field "filled", QWizard simply checks that the
field's current value doesn't equal the original value (the value
it had when initializePage() was called). For QLineEdit and
QAbstractSpinBox subclasses, QWizard also checks that
\l{QLineEdit::hasAcceptableInput()}{hasAcceptableInput()} returns
true, to honor any validator or mask.
QWizard's mandatory field mechanism is provided for convenience.
A more powerful (but also more cumbersome) alternative is to
reimplement QWizardPage::isComplete() and to emit the
QWizardPage::completeChanged() signal whenever the page becomes
complete or incomplete.
The enabled/disabled state of the \gui Next and/or \gui Finish
buttons is one way to perform validation on the user input.
Another way is to reimplement validateCurrentPage() (or
QWizardPage::validatePage()) to perform some last-minute
validation (and show an error message if the user has entered
incomplete or invalid information). If the function returns true,
the next page is shown (or the wizard finishes); otherwise, the
current page stays up.
\section1 Creating Linear Wizards
Most wizards have a linear structure, with page 1 followed by
page 2 and so on until the last page. The \l{dialogs/classwizard}{Class
Wizard} example is such a wizard. With QWizard, linear wizards
are created by instantiating the \l{QWizardPage}s and inserting
them using addPage(). By default, the pages are shown in the
order in which they were added. For example:
\snippet examples/dialogs/classwizard/classwizard.cpp 0
\dots
\snippet examples/dialogs/classwizard/classwizard.cpp 2
When a page is about to be shown, QWizard calls initializePage()
(which in turn calls QWizardPage::initializePage()) to fill the
page with default values. By default, this function does nothing,
but it can be reimplemented to initialize the page's contents
based on other pages' fields (see the \l{initialize page}{example
above}).
If the user presses \gui Back, cleanupPage() is called (which in
turn calls QWizardPage::cleanupPage()). The default
implementation resets the page's fields to their original values
(the values they had before initializePage() was called). If you
want the \gui Back button to be non-destructive and keep the
values entered by the user, simply enable the IndependentPages
option.
\section1 Creating Non-Linear Wizards
Some wizards are more complex in that they allow different
traversal paths based on the information provided by the user.
The \l{dialogs/licensewizard}{License Wizard} example illustrates this.
It provides five wizard pages; depending on which options are
selected, the user can reach different pages.
\image licensewizard-flow.png
In complex wizards, pages are identified by IDs. These IDs are
typically defined using an enum. For example:
\snippet examples/dialogs/licensewizard/licensewizard.h 0
\dots
\snippet examples/dialogs/licensewizard/licensewizard.h 2
\dots
\snippet examples/dialogs/licensewizard/licensewizard.h 3
The pages are inserted using setPage(), which takes an ID and an
instance of QWizardPage (or of a subclass):
\snippet examples/dialogs/licensewizard/licensewizard.cpp 1
\dots
\snippet examples/dialogs/licensewizard/licensewizard.cpp 8
By default, the pages are shown in increasing ID order. To
provide a dynamic order that depends on the options chosen by the
user, we must reimplement QWizardPage::nextId(). For example:
\snippet examples/dialogs/licensewizard/licensewizard.cpp 18
\codeline
\snippet examples/dialogs/licensewizard/licensewizard.cpp 23
\codeline
\snippet examples/dialogs/licensewizard/licensewizard.cpp 24
\codeline
\snippet examples/dialogs/licensewizard/licensewizard.cpp 25
\codeline
\snippet examples/dialogs/licensewizard/licensewizard.cpp 26
It would also be possible to put all the logic in one place, in a
QWizard::nextId() reimplementation. For example:
\snippet doc/src/snippets/code/src_gui_dialogs_qwizard.cpp 0
To start at another page than the page with the lowest ID, call
setStartId().
To test whether a page has been visited or not, call
hasVisitedPage(). For example:
\snippet examples/dialogs/licensewizard/licensewizard.cpp 27
\sa QWizardPage, {Class Wizard Example}, {License Wizard Example}
*/
/*!
\enum QWizard::WizardButton
This enum specifies the buttons in a wizard.
\value BackButton The \gui Back button (\gui {Go Back} on Mac OS X)
\value NextButton The \gui Next button (\gui Continue on Mac OS X)
\value CommitButton The \gui Commit button
\value FinishButton The \gui Finish button (\gui Done on Mac OS X)
\value CancelButton The \gui Cancel button (see also NoCancelButton)
\value HelpButton The \gui Help button (see also HaveHelpButton)
\value CustomButton1 The first user-defined button (see also HaveCustomButton1)
\value CustomButton2 The second user-defined button (see also HaveCustomButton2)
\value CustomButton3 The third user-defined button (see also HaveCustomButton3)
The following value is only useful when calling setButtonLayout():
\value Stretch A horizontal stretch in the button layout
\omitvalue NoButton
\omitvalue NStandardButtons
\omitvalue NButtons
\sa setButton(), setButtonText(), setButtonLayout(), customButtonClicked()
*/
/*!
\enum QWizard::WizardPixmap
This enum specifies the pixmaps that can be associated with a page.
\value WatermarkPixmap The tall pixmap on the left side of a ClassicStyle or ModernStyle page
\value LogoPixmap The small pixmap on the right side of a ClassicStyle or ModernStyle page header
\value BannerPixmap The pixmap that occupies the background of a ModernStyle page header
\value BackgroundPixmap The pixmap that occupies the background of a MacStyle wizard
\omitvalue NPixmaps
\sa setPixmap(), QWizardPage::setPixmap(), {Elements of a Wizard Page}
*/
/*!
\enum QWizard::WizardStyle
This enum specifies the different looks supported by QWizard.
\value ClassicStyle Classic Windows look
\value ModernStyle Modern Windows look
\value MacStyle Mac OS X look
\value AeroStyle Windows Aero look
\omitvalue NStyles
\sa setWizardStyle(), WizardOption, {Wizard Look and Feel}
*/
/*!
\enum QWizard::WizardOption
This enum specifies various options that affect the look and feel
of a wizard.
\value IndependentPages The pages are independent of each other
(i.e., they don't derive values from each
other).
\value IgnoreSubTitles Don't show any subtitles, even if they are set.
\value ExtendedWatermarkPixmap Extend any WatermarkPixmap all the
way down to the window's edge.
\value NoDefaultButton Don't make the \gui Next or \gui Finish button the
dialog's \l{QPushButton::setDefault()}{default button}.
\value NoBackButtonOnStartPage Don't show the \gui Back button on the start page.
\value NoBackButtonOnLastPage Don't show the \gui Back button on the last page.
\value DisabledBackButtonOnLastPage Disable the \gui Back button on the last page.
\value HaveNextButtonOnLastPage Show the (disabled) \gui Next button on the last page.
\value HaveFinishButtonOnEarlyPages Show the (disabled) \gui Finish button on non-final pages.
\value NoCancelButton Don't show the \gui Cancel button.
\value CancelButtonOnLeft Put the \gui Cancel button on the left of \gui Back (rather than on
the right of \gui Finish or \gui Next).
\value HaveHelpButton Show the \gui Help button.
\value HelpButtonOnRight Put the \gui Help button on the far right of the button layout
(rather than on the far left).
\value HaveCustomButton1 Show the first user-defined button (CustomButton1).
\value HaveCustomButton2 Show the second user-defined button (CustomButton2).
\value HaveCustomButton3 Show the third user-defined button (CustomButton3).
\sa setOptions(), setOption(), testOption()
*/
/*!
Constructs a wizard with the given \a parent and window \a flags.
\sa parent(), windowFlags()
*/
QWizard::QWizard(QWidget *parent, Qt::WindowFlags flags)
: QDialog(*new QWizardPrivate, parent, flags)
{
Q_D(QWizard);
d->init();
#ifdef Q_WS_WINCE
if (!qt_wince_is_mobile())
setWindowFlags(windowFlags() & ~Qt::WindowOkButtonHint);
#endif
}
/*!
Destroys the wizard and its pages, releasing any allocated resources.
*/
QWizard::~QWizard()
{
Q_D(QWizard);
delete d->buttonLayout;
}
/*!
Adds the given \a page to the wizard, and returns the page's ID.
The ID is guaranteed to be larger than any other ID in the
QWizard so far.
\sa setPage(), page()
*/
int QWizard::addPage(QWizardPage *page)
{
Q_D(QWizard);
int theid = 0;
if (!d->pageMap.isEmpty())
theid = (d->pageMap.constEnd() - 1).key() + 1;
setPage(theid, page);
return theid;
}
/*!
\fn void QWizard::setPage(int id, QWizardPage *page)
Adds the given \a page to the wizard with the given \a id.
\sa addPage(), page()
*/
void QWizard::setPage(int theid, QWizardPage *page)
{
Q_D(QWizard);
if (!page) {
qWarning("QWizard::setPage: Cannot insert null page");
return;
}
if (theid == -1) {
qWarning("QWizard::setPage: Cannot insert page with ID -1");
return;
}
if (d->pageMap.contains(theid)) {
qWarning("QWizard::setPage: Page with duplicate ID %d ignored", theid);
return;
}
page->setParent(d->pageFrame);
QVector<QWizardField> &pendingFields = page->d_func()->pendingFields;
for (int i = 0; i < pendingFields.count(); ++i)
d->addField(pendingFields.at(i));
pendingFields.clear();
connect(page, SIGNAL(completeChanged()), this, SLOT(_q_updateButtonStates()));
d->pageMap.insert(theid, page);
page->d_func()->wizard = this;
int n = d->pageVBoxLayout->count();
// disable layout to prevent layout updates while adding
bool pageVBoxLayoutEnabled = d->pageVBoxLayout->isEnabled();
d->pageVBoxLayout->setEnabled(false);
d->pageVBoxLayout->insertWidget(n - 1, page);
// hide new page and reset layout to old status
page->hide();
d->pageVBoxLayout->setEnabled(pageVBoxLayoutEnabled);
}
/*!
Removes the page with the given \a id. cleanupPage() will be called if necessary.
\since 4.5
\sa addPage(), setPage()
*/
void QWizard::removePage(int id)
{
Q_D(QWizard);
QWizardPage *removedPage = 0;
if (d->start == id)
d->start = -1;
if (!d->history.contains(id)) {
// Case 1: removing a page not in the history
removedPage = d->pageMap.take(id);
d->updateCurrentPage();
} else if (id != d->current) {
// Case 2: removing a page in the history before the current page
removedPage = d->pageMap.take(id);
d->history.removeOne(id);
d->_q_updateButtonStates();
} else if (d->history.count() == 1) {
// Case 3: removing the current page which is the first (and only) one in the history
d->reset();
removedPage = d->pageMap.take(id);
if (d->pageMap.isEmpty())
d->updateCurrentPage();
else
restart();
} else {
// Case 4: removing the current page which is not the first one in the history
back();
removedPage = d->pageMap.take(id);
d->updateCurrentPage();
}
if (removedPage) {
if (d->initialized.contains(id)) {
cleanupPage(id);
d->initialized.remove(id);
}
d->pageVBoxLayout->removeWidget(removedPage);
for (int i = d->fields.count() - 1; i >= 0; --i) {
if (d->fields.at(i).page == removedPage) {
removedPage->d_func()->pendingFields += d->fields.at(i);
d->removeFieldAt(i);
}
}
}
}
/*!
\fn QWizardPage *QWizard::page(int id) const
Returns the page with the given \a id, or 0 if there is no such
page.
\sa addPage(), setPage()
*/
QWizardPage *QWizard::page(int theid) const
{
Q_D(const QWizard);
return d->pageMap.value(theid);
}
/*!
\fn bool QWizard::hasVisitedPage(int id) const
Returns true if the page history contains page \a id; otherwise,
returns false.
Pressing \gui Back marks the current page as "unvisited" again.
\sa visitedPages()
*/
bool QWizard::hasVisitedPage(int theid) const
{
Q_D(const QWizard);
return d->history.contains(theid);
}
/*!
Returns the list of IDs of visited pages, in the order in which the pages
were visited.
Pressing \gui Back marks the current page as "unvisited" again.
\sa hasVisitedPage()
*/
QList<int> QWizard::visitedPages() const
{
Q_D(const QWizard);
return d->history;
}
/*!
Returns the list of page IDs.
\since 4.5
*/
QList<int> QWizard::pageIds() const
{
Q_D(const QWizard);
return d->pageMap.keys();
}
/*!
\property QWizard::startId
\brief the ID of the first page
If this property isn't explicitly set, this property defaults to
the lowest page ID in this wizard, or -1 if no page has been
inserted yet.
\sa restart(), nextId()
*/
void QWizard::setStartId(int theid)
{
Q_D(QWizard);
if (!d->pageMap.contains(theid)) {
qWarning("QWizard::setStartId: Invalid page ID %d", theid);
return;
}
d->start = theid;
}
int QWizard::startId() const
{
Q_D(const QWizard);
if (d->start != -1)
return d->start;
if (!d->pageMap.isEmpty())
return d->pageMap.constBegin().key();
return -1;
}
/*!
Returns a pointer to the current page, or 0 if there is no current
page (e.g., before the wizard is shown).
This is equivalent to calling page(currentId()).
\sa page(), currentId(), restart()
*/
QWizardPage *QWizard::currentPage() const
{
Q_D(const QWizard);
return page(d->current);
}
/*!
\property QWizard::currentId
\brief the ID of the current page
This property cannot be set directly. To change the current page,
call next(), back(), or restart().
By default, this property has a value of -1, indicating that no page is
currently shown.
\sa currentIdChanged(), currentPage()
*/
int QWizard::currentId() const
{
Q_D(const QWizard);
return d->current;
}
/*!
Sets the value of the field called \a name to \a value.
This function can be used to set fields on any page of the wizard.
\sa QWizardPage::registerField(), QWizardPage::setField(), field()
*/
void QWizard::setField(const QString &name, const QVariant &value)
{
Q_D(QWizard);
int index = d->fieldIndexMap.value(name, -1);
if (index != -1) {
const QWizardField &field = d->fields.at(index);
if (!field.object->setProperty(field.property, value))
qWarning("QWizard::setField: Couldn't write to property '%s'",
field.property.constData());
return;
}
qWarning("QWizard::setField: No such field '%s'", qPrintable(name));
}
/*!
Returns the value of the field called \a name.
This function can be used to access fields on any page of the wizard.
\sa QWizardPage::registerField(), QWizardPage::field(), setField()
*/
QVariant QWizard::field(const QString &name) const
{
Q_D(const QWizard);
int index = d->fieldIndexMap.value(name, -1);
if (index != -1) {
const QWizardField &field = d->fields.at(index);
return field.object->property(field.property);
}
qWarning("QWizard::field: No such field '%s'", qPrintable(name));
return QVariant();
}
/*!
\property QWizard::wizardStyle
\brief the look and feel of the wizard
By default, QWizard uses the AeroStyle on a Windows Vista system with alpha compositing
enabled, regardless of the current widget style. If this is not the case, the default
wizard style depends on the current widget style as follows: MacStyle is the default if
the current widget style is QMacStyle, ModernStyle is the default if the current widget
style is QWindowsStyle, and ClassicStyle is the default in all other cases.
\sa {Wizard Look and Feel}, options
*/
void QWizard::setWizardStyle(WizardStyle style)
{
Q_D(QWizard);
const bool styleChange = style != d->wizStyle;
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
const bool aeroStyleChange =
d->vistaInitPending || d->vistaStateChanged || (styleChange && (style == AeroStyle || d->wizStyle == AeroStyle));
d->vistaStateChanged = false;
d->vistaInitPending = false;
#endif
if (styleChange
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
|| aeroStyleChange
#endif
) {
d->disableUpdates();
d->wizStyle = style;
d->updateButtonTexts();
d->updateLayout();
updateGeometry();
d->enableUpdates();
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
if (aeroStyleChange)
d->handleAeroStyleChange();
#endif
}
}
QWizard::WizardStyle QWizard::wizardStyle() const
{
Q_D(const QWizard);
return d->wizStyle;
}
/*!
Sets the given \a option to be enabled if \a on is true;
otherwise, clears the given \a option.
\sa options, testOption(), setWizardStyle()
*/
void QWizard::setOption(WizardOption option, bool on)
{
Q_D(QWizard);
if (!(d->opts & option) != !on)
setOptions(d->opts ^ option);
}
/*!
Returns true if the given \a option is enabled; otherwise, returns
false.
\sa options, setOption(), setWizardStyle()
*/
bool QWizard::testOption(WizardOption option) const
{
Q_D(const QWizard);
return (d->opts & option) != 0;
}
/*!
\property QWizard::options
\brief the various options that affect the look and feel of the wizard
By default, the following options are set (depending on the platform):
\list
\o Windows: HelpButtonOnRight.
\o Mac OS X: NoDefaultButton and NoCancelButton.
\o X11 and QWS (Qt for Embedded Linux): none.
\endlist
\sa wizardStyle
*/
void QWizard::setOptions(WizardOptions options)
{
Q_D(QWizard);
WizardOptions changed = (options ^ d->opts);
if (!changed)
return;
d->disableUpdates();
d->opts = options;
if ((changed & IndependentPages) && !(d->opts & IndependentPages))
d->cleanupPagesNotInHistory();
if (changed & (NoDefaultButton | HaveHelpButton | HelpButtonOnRight | NoCancelButton
| CancelButtonOnLeft | HaveCustomButton1 | HaveCustomButton2
| HaveCustomButton3)) {
d->updateButtonLayout();
} else if (changed & (NoBackButtonOnStartPage | NoBackButtonOnLastPage
| HaveNextButtonOnLastPage | HaveFinishButtonOnEarlyPages
| DisabledBackButtonOnLastPage)) {
d->_q_updateButtonStates();
}
d->enableUpdates();
d->updateLayout();
}
QWizard::WizardOptions QWizard::options() const
{
Q_D(const QWizard);
return d->opts;
}
/*!
Sets the text on button \a which to be \a text.
By default, the text on buttons depends on the wizardStyle. For
example, on Mac OS X, the \gui Next button is called \gui
Continue.
To add extra buttons to the wizard (e.g., a \gui Print button),
one way is to call setButtonText() with CustomButton1,
CustomButton2, or CustomButton3 to set their text, and make the
buttons visible using the HaveCustomButton1, HaveCustomButton2,
and/or HaveCustomButton3 options.
Button texts may also be set on a per-page basis using QWizardPage::setButtonText().
\sa setButton(), button(), setButtonLayout(), setOptions(), QWizardPage::setButtonText()
*/
void QWizard::setButtonText(WizardButton which, const QString &text)
{
Q_D(QWizard);
if (!d->ensureButton(which))
return;
d->buttonCustomTexts.insert(which, text);
if (!currentPage() || !currentPage()->d_func()->buttonCustomTexts.contains(which))
d->btns[which]->setText(text);
}
/*!
Returns the text on button \a which.
If a text has ben set using setButtonText(), this text is returned.
By default, the text on buttons depends on the wizardStyle. For
example, on Mac OS X, the \gui Next button is called \gui
Continue.
\sa button(), setButton(), setButtonText(), QWizardPage::buttonText(),
QWizardPage::setButtonText()
*/
QString QWizard::buttonText(WizardButton which) const
{
Q_D(const QWizard);
if (!d->ensureButton(which))
return QString();
if (d->buttonCustomTexts.contains(which))
return d->buttonCustomTexts.value(which);
const QString defText = buttonDefaultText(d->wizStyle, which, d);
if(!defText.isNull())
return defText;
return d->btns[which]->text();
}
/*!
Sets the order in which buttons are displayed to \a layout, where
\a layout is a list of \l{WizardButton}s.
The default layout depends on the options (e.g., whether
HelpButtonOnRight) that are set. You can call this function if
you need more control over the buttons' layout than what \l
options already provides.
You can specify horizontal stretches in the layout using \l
Stretch.
Example:
\snippet doc/src/snippets/code/src_gui_dialogs_qwizard.cpp 1
\sa setButton(), setButtonText(), setOptions()
*/
void QWizard::setButtonLayout(const QList<WizardButton> &layout)
{
Q_D(QWizard);
for (int i = 0; i < layout.count(); ++i) {
WizardButton button1 = layout.at(i);
if (button1 == NoButton || button1 == Stretch)
continue;
if (!d->ensureButton(button1))
return;
// O(n^2), but n is very small
for (int j = 0; j < i; ++j) {
WizardButton button2 = layout.at(j);
if (button2 == button1) {
qWarning("QWizard::setButtonLayout: Duplicate button in layout");
return;
}
}
}
d->buttonsHaveCustomLayout = true;
d->buttonsCustomLayout = layout;
d->updateButtonLayout();
}
/*!
Sets the button corresponding to role \a which to \a button.
To add extra buttons to the wizard (e.g., a \gui Print button),
one way is to call setButton() with CustomButton1 to
CustomButton3, and make the buttons visible using the
HaveCustomButton1 to HaveCustomButton3 options.
\sa setButtonText(), setButtonLayout(), options
*/
void QWizard::setButton(WizardButton which, QAbstractButton *button)
{
Q_D(QWizard);
if (uint(which) >= NButtons || d->btns[which] == button)
return;
if (QAbstractButton *oldButton = d->btns[which]) {
d->buttonLayout->removeWidget(oldButton);
delete oldButton;
}
d->btns[which] = button;
if (button) {
button->setParent(d->antiFlickerWidget);
d->buttonCustomTexts.insert(which, button->text());
d->connectButton(which);
} else {
d->buttonCustomTexts.remove(which); // ### what about page-specific texts set for 'which'
d->ensureButton(which); // (QWizardPage::setButtonText())? Clear them as well?
}
d->updateButtonLayout();
}
/*!
Returns the button corresponding to role \a which.
\sa setButton(), setButtonText()
*/
QAbstractButton *QWizard::button(WizardButton which) const
{
Q_D(const QWizard);
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
if (d->wizStyle == AeroStyle && which == BackButton)
return d->vistaHelper->backButton();
#endif
if (!d->ensureButton(which))
return 0;
return d->btns[which];
}
/*!
\property QWizard::titleFormat
\brief the text format used by page titles
The default format is Qt::AutoText.
\sa QWizardPage::title, subTitleFormat
*/
void QWizard::setTitleFormat(Qt::TextFormat format)
{
Q_D(QWizard);
d->titleFmt = format;
d->updateLayout();
}
Qt::TextFormat QWizard::titleFormat() const
{
Q_D(const QWizard);
return d->titleFmt;
}
/*!
\property QWizard::subTitleFormat
\brief the text format used by page subtitles
The default format is Qt::AutoText.
\sa QWizardPage::title, titleFormat
*/
void QWizard::setSubTitleFormat(Qt::TextFormat format)
{
Q_D(QWizard);
d->subTitleFmt = format;
d->updateLayout();
}
Qt::TextFormat QWizard::subTitleFormat() const
{
Q_D(const QWizard);
return d->subTitleFmt;
}
/*!
Sets the pixmap for role \a which to \a pixmap.
The pixmaps are used by QWizard when displaying a page. Which
pixmaps are actually used depend on the \l{Wizard Look and
Feel}{wizard style}.
Pixmaps can also be set for a specific page using
QWizardPage::setPixmap().
\sa QWizardPage::setPixmap(), {Elements of a Wizard Page}
*/
void QWizard::setPixmap(WizardPixmap which, const QPixmap &pixmap)
{
Q_D(QWizard);
Q_ASSERT(uint(which) < NPixmaps);
d->defaultPixmaps[which] = pixmap;
d->updatePixmap(which);
}
/*!
Returns the pixmap set for role \a which.
By default, the only pixmap that is set is the BackgroundPixmap on
Mac OS X.
\sa QWizardPage::pixmap(), {Elements of a Wizard Page}
*/
QPixmap QWizard::pixmap(WizardPixmap which) const
{
Q_D(const QWizard);
Q_ASSERT(uint(which) < NPixmaps);
#ifdef Q_WS_MAC
if (which == BackgroundPixmap && d->defaultPixmaps[BackgroundPixmap].isNull())
d->defaultPixmaps[BackgroundPixmap] = d->findDefaultBackgroundPixmap();
#endif
return d->defaultPixmaps[which];
}
/*!
Sets the default property for \a className to be \a property,
and the associated change signal to be \a changedSignal.
The default property is used when an instance of \a className (or
of one of its subclasses) is passed to
QWizardPage::registerField() and no property is specified.
QWizard knows the most common Qt widgets. For these (or their
subclasses), you don't need to specify a \a property or a \a
changedSignal. The table below lists these widgets:
\table
\header \o Widget \o Property \o Change Notification Signal
\row \o QAbstractButton \o bool \l{QAbstractButton::}{checked} \o \l{QAbstractButton::}{toggled()}
\row \o QAbstractSlider \o int \l{QAbstractSlider::}{value} \o \l{QAbstractSlider::}{valueChanged()}
\row \o QComboBox \o int \l{QComboBox::}{currentIndex} \o \l{QComboBox::}{currentIndexChanged()}
\row \o QDateTimeEdit \o QDateTime \l{QDateTimeEdit::}{dateTime} \o \l{QDateTimeEdit::}{dateTimeChanged()}
\row \o QLineEdit \o QString \l{QLineEdit::}{text} \o \l{QLineEdit::}{textChanged()}
\row \o QListWidget \o int \l{QListWidget::}{currentRow} \o \l{QListWidget::}{currentRowChanged()}
\row \o QSpinBox \o int \l{QSpinBox::}{value} \o \l{QSpinBox::}{valueChanged()}
\endtable
\sa QWizardPage::registerField()
*/
void QWizard::setDefaultProperty(const char *className, const char *property,
const char *changedSignal)
{
Q_D(QWizard);
for (int i = d->defaultPropertyTable.count() - 1; i >= 0; --i) {
if (qstrcmp(d->defaultPropertyTable.at(i).className, className) == 0) {
d->defaultPropertyTable.remove(i);
break;
}
}
d->defaultPropertyTable.append(QWizardDefaultProperty(className, property, changedSignal));
}
/*!
\reimp
*/
void QWizard::setVisible(bool visible)
{
Q_D(QWizard);
if (visible) {
if (d->current == -1)
restart();
}
QDialog::setVisible(visible);
}
/*!
\reimp
*/
QSize QWizard::sizeHint() const
{
Q_D(const QWizard);
QSize result = d->mainLayout->totalSizeHint();
#ifdef Q_WS_S60
QSize extra(QApplication::desktop()->availableGeometry(QCursor::pos()).size());
#else
QSize extra(500, 360);
#endif
if (d->wizStyle == MacStyle && d->current != -1) {
QSize pixmap(currentPage()->pixmap(BackgroundPixmap).size());
extra.setWidth(616);
if (!pixmap.isNull()) {
extra.setHeight(pixmap.height());
/*
The width isn't always reliable as a size hint, as
some wizard backgrounds just cover the leftmost area.
Use a rule of thumb to determine if the width is
reliable or not.
*/
if (pixmap.width() >= pixmap.height())
extra.setWidth(pixmap.width());
}
}
return result.expandedTo(extra);
}
/*!
\fn void QWizard::currentIdChanged(int id)
This signal is emitted when the current page changes, with the new
current \a id.
\sa currentId(), currentPage()
*/
/*!
\fn void QWizard::helpRequested()
This signal is emitted when the user clicks the \gui Help button.
By default, no \gui Help button is shown. Call
setOption(HaveHelpButton, true) to have one.
Example:
\snippet examples/dialogs/licensewizard/licensewizard.cpp 0
\dots
\snippet examples/dialogs/licensewizard/licensewizard.cpp 5
\snippet examples/dialogs/licensewizard/licensewizard.cpp 7
\dots
\snippet examples/dialogs/licensewizard/licensewizard.cpp 8
\codeline
\snippet examples/dialogs/licensewizard/licensewizard.cpp 10
\dots
\snippet examples/dialogs/licensewizard/licensewizard.cpp 12
\codeline
\snippet examples/dialogs/licensewizard/licensewizard.cpp 14
\codeline
\snippet examples/dialogs/licensewizard/licensewizard.cpp 15
\sa customButtonClicked()
*/
/*!
\fn void QWizard::customButtonClicked(int which)
This signal is emitted when the user clicks a custom button. \a
which can be CustomButton1, CustomButton2, or CustomButton3.
By default, no custom button is shown. Call setOption() with
HaveCustomButton1, HaveCustomButton2, or HaveCustomButton3 to have
one, and use setButtonText() or setButton() to configure it.
\sa helpRequested()
*/
/*!
Goes back to the previous page.
This is equivalent to pressing the \gui Back button.
\sa next(), accept(), reject(), restart()
*/
void QWizard::back()
{
Q_D(QWizard);
int n = d->history.count() - 2;
if (n < 0)
return;
d->switchToPage(d->history.at(n), QWizardPrivate::Backward);
}
/*!
Advances to the next page.
This is equivalent to pressing the \gui Next or \gui Commit button.
\sa nextId(), back(), accept(), reject(), restart()
*/
void QWizard::next()
{
Q_D(QWizard);
if (d->current == -1)
return;
if (validateCurrentPage()) {
int next = nextId();
if (next != -1) {
if (d->history.contains(next)) {
qWarning("QWizard::next: Page %d already met", next);
return;
}
if (!d->pageMap.contains(next)) {
qWarning("QWizard::next: No such page %d", next);
return;
}
d->switchToPage(next, QWizardPrivate::Forward);
}
}
}
/*!
Restarts the wizard at the start page. This function is called automatically when the
wizard is shown.
\sa startId()
*/
void QWizard::restart()
{
Q_D(QWizard);
d->disableUpdates();
d->reset();
d->switchToPage(startId(), QWizardPrivate::Forward);
d->enableUpdates();
}
/*!
\reimp
*/
bool QWizard::event(QEvent *event)
{
Q_D(QWizard);
if (event->type() == QEvent::StyleChange) { // Propagate style
d->setStyle(style());
d->updateLayout();
}
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
else if (event->type() == QEvent::Show && d->vistaInitPending) {
d->vistaInitPending = false;
d->wizStyle = AeroStyle;
d->handleAeroStyleChange();
}
else if (d->isVistaThemeEnabled()) {
d->vistaHelper->mouseEvent(event);
}
#endif
return QDialog::event(event);
}
/*!
\reimp
*/
void QWizard::resizeEvent(QResizeEvent *event)
{
Q_D(QWizard);
int heightOffset = 0;
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
if (d->isVistaThemeEnabled()) {
heightOffset = d->vistaHelper->topOffset();
if (d->isVistaThemeEnabled(QVistaHelper::VistaAero))
heightOffset += d->vistaHelper->titleBarSize();
}
#endif
d->antiFlickerWidget->resize(event->size().width(), event->size().height() - heightOffset);
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
if (d->isVistaThemeEnabled())
d->vistaHelper->resizeEvent(event);
#endif
QDialog::resizeEvent(event);
}
/*!
\reimp
*/
void QWizard::paintEvent(QPaintEvent * event)
{
Q_D(QWizard);
if (d->wizStyle == MacStyle && currentPage()) {
QPixmap backgroundPixmap = currentPage()->pixmap(BackgroundPixmap);
if (backgroundPixmap.isNull())
return;
QPainter painter(this);
painter.drawPixmap(0, (height() - backgroundPixmap.height()) / 2, backgroundPixmap);
}
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
else if (d->isVistaThemeEnabled()) {
if (d->isVistaThemeEnabled(QVistaHelper::VistaBasic)) {
QPainter painter(this);
QColor color = d->vistaHelper->basicWindowFrameColor();
painter.fillRect(0, 0, width(), QVistaHelper::topOffset(), color);
}
d->vistaHelper->paintEvent(event);
}
#else
Q_UNUSED(event);
#endif
}
#if defined(Q_WS_WIN)
/*!
\reimp
*/
bool QWizard::winEvent(MSG *message, long *result)
{
#if !defined(QT_NO_STYLE_WINDOWSVISTA)
Q_D(QWizard);
if (d->isVistaThemeEnabled()) {
const bool winEventResult = d->vistaHelper->handleWinEvent(message, result);
if (QVistaHelper::vistaState() != d->vistaState) {
d->vistaState = QVistaHelper::vistaState();
d->vistaStateChanged = true;
setWizardStyle(AeroStyle);
}
return winEventResult;
} else {
return QDialog::winEvent(message, result);
}
#else
return QDialog::winEvent(message, result);
#endif
}
#endif
/*!
\reimp
*/
void QWizard::done(int result)
{
Q_D(QWizard);
// canceling leaves the wizard in a known state
if (result == Rejected) {
d->reset();
} else {
if (!validateCurrentPage())
return;
}
QDialog::done(result);
}
/*!
\fn void QWizard::initializePage(int id)
This virtual function is called by QWizard to prepare page \a id
just before it is shown either as a result of QWizard::restart()
being called, or as a result of the user clicking \gui Next. (However, if the \l
QWizard::IndependentPages option is set, this function is only
called the first time the page is shown.)
By reimplementing this function, you can ensure that the page's
fields are properly initialized based on fields from previous
pages.
The default implementation calls QWizardPage::initializePage() on
page(\a id).
\sa QWizardPage::initializePage(), cleanupPage()
*/
void QWizard::initializePage(int theid)
{
QWizardPage *page = this->page(theid);
if (page)
page->initializePage();
}
/*!
\fn void QWizard::cleanupPage(int id)
This virtual function is called by QWizard to clean up page \a id just before the
user leaves it by clicking \gui Back (unless the \l QWizard::IndependentPages option is set).
The default implementation calls QWizardPage::cleanupPage() on
page(\a id).
\sa QWizardPage::cleanupPage(), initializePage()
*/
void QWizard::cleanupPage(int theid)
{
QWizardPage *page = this->page(theid);
if (page)
page->cleanupPage();
}
/*!
This virtual function is called by QWizard when the user clicks
\gui Next or \gui Finish to perform some last-minute validation.
If it returns true, the next page is shown (or the wizard
finishes); otherwise, the current page stays up.
The default implementation calls QWizardPage::validatePage() on
the currentPage().
When possible, it is usually better style to disable the \gui
Next or \gui Finish button (by specifying \l{mandatory fields} or
by reimplementing QWizardPage::isComplete()) than to reimplement
validateCurrentPage().
\sa QWizardPage::validatePage(), currentPage()
*/
bool QWizard::validateCurrentPage()
{
QWizardPage *page = currentPage();
if (!page)
return true;
return page->validatePage();
}
/*!
This virtual function is called by QWizard to find out which page
to show when the user clicks the \gui Next button.
The return value is the ID of the next page, or -1 if no page follows.
The default implementation calls QWizardPage::nextId() on the
currentPage().
By reimplementing this function, you can specify a dynamic page
order.
\sa QWizardPage::nextId(), currentPage()
*/
int QWizard::nextId() const
{
const QWizardPage *page = currentPage();
if (!page)
return -1;
return page->nextId();
}
/*!
\class QWizardPage
\since 4.3
\brief The QWizardPage class is the base class for wizard pages.
QWizard represents a wizard. Each page is a QWizardPage. When
you create your own wizards, you can use QWizardPage directly,
or you can subclass it for more control.
A page has the following attributes, which are rendered by
QWizard: a \l title, a \l subTitle, and a \l{setPixmap()}{set of
pixmaps}. See \l{Elements of a Wizard Page} for details. Once a
page is added to the wizard (using QWizard::addPage() or
QWizard::setPage()), wizard() returns a pointer to the
associated QWizard object.
Page provides five virtual functions that can be reimplemented to
provide custom behavior:
\list
\o initializePage() is called to initialize the page's contents
when the user clicks the wizard's \gui Next button. If you
want to derive the page's default from what the user entered
on previous pages, this is the function to reimplement.
\o cleanupPage() is called to reset the page's contents when the
user clicks the wizard's \gui Back button.
\o validatePage() validates the page when the user clicks \gui
Next or \gui Finish. It is often used to show an error message
if the user has entered incomplete or invalid information.
\o nextId() returns the ID of the next page. It is useful when
\l{creating non-linear wizards}, which allow different
traversal paths based on the information provided by the user.
\o isComplete() is called to determine whether the \gui Next
and/or \gui Finish button should be enabled or disabled. If
you reimplement isComplete(), also make sure that
completeChanged() is emitted whenever the complete state
changes.
\endlist
Normally, the \gui Next button and the \gui Finish button of a
wizard are mutually exclusive. If isFinalPage() returns true, \gui
Finish is available; otherwise, \gui Next is available. By
default, isFinalPage() is true only when nextId() returns -1. If
you want to show \gui Next and \gui Final simultaneously for a
page (letting the user perform an "early finish"), call
setFinalPage(true) on that page. For wizards that support early
finishes, you might also want to set the
\l{QWizard::}{HaveNextButtonOnLastPage} and
\l{QWizard::}{HaveFinishButtonOnEarlyPages} options on the
wizard.
In many wizards, the contents of a page may affect the default
values of the fields of a later page. To make it easy to
communicate between pages, QWizard supports a \l{Registering and
Using Fields}{"field" mechanism} that allows you to register a
field (e.g., a QLineEdit) on a page and to access its value from
any page. Fields are global to the entire wizard and make it easy
for any single page to access information stored by another page,
without having to put all the logic in QWizard or having the
pages know explicitly about each other. Fields are registered
using registerField() and can be accessed at any time using
field() and setField().
\sa QWizard, {Class Wizard Example}, {License Wizard Example}
*/
/*!
Constructs a wizard page with the given \a parent.
When the page is inserted into a wizard using QWizard::addPage()
or QWizard::setPage(), the parent is automatically set to be the
wizard.
\sa wizard()
*/
QWizardPage::QWizardPage(QWidget *parent)
: QWidget(*new QWizardPagePrivate, parent, 0)
{
connect(this, SIGNAL(completeChanged()), this, SLOT(_q_updateCachedCompleteState()));
}
/*!
\property QWizardPage::title
\brief the title of the page
The title is shown by the QWizard, above the actual page. All
pages should have a title.
The title may be plain text or HTML, depending on the value of the
\l{QWizard::titleFormat} property.
By default, this property contains an empty string.
\sa subTitle, {Elements of a Wizard Page}
*/
void QWizardPage::setTitle(const QString &title)
{
Q_D(QWizardPage);
d->title = title;
if (d->wizard && d->wizard->currentPage() == this)
d->wizard->d_func()->updateLayout();
}
QString QWizardPage::title() const
{
Q_D(const QWizardPage);
return d->title;
}
/*!
\property QWizardPage::subTitle
\brief the subtitle of the page
The subtitle is shown by the QWizard, between the title and the
actual page. Subtitles are optional. In
\l{QWizard::ClassicStyle}{ClassicStyle} and
\l{QWizard::ModernStyle}{ModernStyle}, using subtitles is
necessary to make the header appear. In
\l{QWizard::MacStyle}{MacStyle}, the subtitle is shown as a text
label just above the actual page.
The subtitle may be plain text or HTML, depending on the value of
the \l{QWizard::subTitleFormat} property.
By default, this property contains an empty string.
\sa title, QWizard::IgnoreSubTitles, {Elements of a Wizard Page}
*/
void QWizardPage::setSubTitle(const QString &subTitle)
{
Q_D(QWizardPage);
d->subTitle = subTitle;
if (d->wizard && d->wizard->currentPage() == this)
d->wizard->d_func()->updateLayout();
}
QString QWizardPage::subTitle() const
{
Q_D(const QWizardPage);
return d->subTitle;
}
/*!
Sets the pixmap for role \a which to \a pixmap.
The pixmaps are used by QWizard when displaying a page. Which
pixmaps are actually used depend on the \l{Wizard Look and
Feel}{wizard style}.
Pixmaps can also be set for the entire wizard using
QWizard::setPixmap(), in which case they apply for all pages that
don't specify a pixmap.
\sa QWizard::setPixmap(), {Elements of a Wizard Page}
*/
void QWizardPage::setPixmap(QWizard::WizardPixmap which, const QPixmap &pixmap)
{
Q_D(QWizardPage);
Q_ASSERT(uint(which) < QWizard::NPixmaps);
d->pixmaps[which] = pixmap;
if (d->wizard && d->wizard->currentPage() == this)
d->wizard->d_func()->updatePixmap(which);
}
/*!
Returns the pixmap set for role \a which.
Pixmaps can also be set for the entire wizard using
QWizard::setPixmap(), in which case they apply for all pages that
don't specify a pixmap.
\sa QWizard::pixmap(), {Elements of a Wizard Page}
*/
QPixmap QWizardPage::pixmap(QWizard::WizardPixmap which) const
{
Q_D(const QWizardPage);
Q_ASSERT(uint(which) < QWizard::NPixmaps);
const QPixmap &pixmap = d->pixmaps[which];
if (!pixmap.isNull())
return pixmap;
if (wizard())
return wizard()->pixmap(which);
return pixmap;
}
/*!
This virtual function is called by QWizard::initializePage() to
prepare the page just before it is shown either as a result of QWizard::restart()
being called, or as a result of the user clicking \gui Next.
(However, if the \l QWizard::IndependentPages option is set, this function is only
called the first time the page is shown.)
By reimplementing this function, you can ensure that the page's
fields are properly initialized based on fields from previous
pages. For example:
\snippet examples/dialogs/classwizard/classwizard.cpp 17
The default implementation does nothing.
\sa QWizard::initializePage(), cleanupPage(), QWizard::IndependentPages
*/
void QWizardPage::initializePage()
{
}
/*!
This virtual function is called by QWizard::cleanupPage() when
the user leaves the page by clicking \gui Back (unless the \l QWizard::IndependentPages
option is set).
The default implementation resets the page's fields to their
original values (the values they had before initializePage() was
called).
\sa QWizard::cleanupPage(), initializePage(), QWizard::IndependentPages
*/
void QWizardPage::cleanupPage()
{
Q_D(QWizardPage);
if (d->wizard) {
QVector<QWizardField> &fields = d->wizard->d_func()->fields;
for (int i = 0; i < fields.count(); ++i) {
const QWizardField &field = fields.at(i);
if (field.page == this)
field.object->setProperty(field.property, field.initialValue);
}
}
}
/*!
This virtual function is called by QWizard::validateCurrentPage()
when the user clicks \gui Next or \gui Finish to perform some
last-minute validation. If it returns true, the next page is shown
(or the wizard finishes); otherwise, the current page stays up.
The default implementation returns true.
When possible, it is usually better style to disable the \gui
Next or \gui Finish button (by specifying \l{mandatory fields} or
reimplementing isComplete()) than to reimplement validatePage().
\sa QWizard::validateCurrentPage(), isComplete()
*/
bool QWizardPage::validatePage()
{
return true;
}
/*!
This virtual function is called by QWizard to determine whether
the \gui Next or \gui Finish button should be enabled or
disabled.
The default implementation returns true if all \l{mandatory
fields} are filled; otherwise, it returns false.
If you reimplement this function, make sure to emit completeChanged(),
from the rest of your implementation, whenever the value of isComplete()
changes. This ensures that QWizard updates the enabled or disabled state of
its buttons. An example of the reimplementation is
available \l{http://qt.nokia.com/doc/qq/qq22-qwizard.html#validatebeforeitstoolate}
{here}.
\sa completeChanged(), isFinalPage()
*/
bool QWizardPage::isComplete() const
{
Q_D(const QWizardPage);
if (!d->wizard)
return true;
const QVector<QWizardField> &wizardFields = d->wizard->d_func()->fields;
for (int i = wizardFields.count() - 1; i >= 0; --i) {
const QWizardField &field = wizardFields.at(i);
if (field.page == this && field.mandatory) {
QVariant value = field.object->property(field.property);
if (value == field.initialValue)
return false;
#ifndef QT_NO_LINEEDIT
if (QLineEdit *lineEdit = qobject_cast<QLineEdit *>(field.object)) {
if (!lineEdit->hasAcceptableInput())
return false;
}
#endif
#ifndef QT_NO_SPINBOX
if (QAbstractSpinBox *spinBox = qobject_cast<QAbstractSpinBox *>(field.object)) {
if (!spinBox->hasAcceptableInput())
return false;
}
#endif
}
}
return true;
}
/*!
Explicitly sets this page to be final if \a finalPage is true.
After calling setFinalPage(true), isFinalPage() returns true and the \gui
Finish button is visible (and enabled if isComplete() returns
true).
After calling setFinalPage(false), isFinalPage() returns true if
nextId() returns -1; otherwise, it returns false.
\sa isComplete(), QWizard::HaveFinishButtonOnEarlyPages
*/
void QWizardPage::setFinalPage(bool finalPage)
{
Q_D(QWizardPage);
d->explicitlyFinal = finalPage;
QWizard *wizard = this->wizard();
if (wizard && wizard->currentPage() == this)
wizard->d_func()->updateCurrentPage();
}
/*!
This function is called by QWizard to determine whether the \gui
Finish button should be shown for this page or not.
By default, it returns true if there is no next page
(i.e., nextId() returns -1); otherwise, it returns false.
By explicitly calling setFinalPage(true), you can let the user perform an
"early finish".
\sa isComplete(), QWizard::HaveFinishButtonOnEarlyPages
*/
bool QWizardPage::isFinalPage() const
{
Q_D(const QWizardPage);
if (d->explicitlyFinal)
return true;
QWizard *wizard = this->wizard();
if (wizard && wizard->currentPage() == this) {
// try to use the QWizard implementation if possible
return wizard->nextId() == -1;
} else {
return nextId() == -1;
}
}
/*!
Sets this page to be a commit page if \a commitPage is true; otherwise,
sets it to be a normal page.
A commit page is a page that represents an action which cannot be undone
by clicking \gui Back or \gui Cancel.
A \gui Commit button replaces the \gui Next button on a commit page. Clicking this
button simply calls QWizard::next() just like clicking \gui Next does.
A page entered directly from a commit page has its \gui Back button disabled.
\sa isCommitPage()
*/
void QWizardPage::setCommitPage(bool commitPage)
{
Q_D(QWizardPage);
d->commit = commitPage;
QWizard *wizard = this->wizard();
if (wizard && wizard->currentPage() == this)
wizard->d_func()->updateCurrentPage();
}
/*!
Returns true if this page is a commit page; otherwise returns false.
\sa setCommitPage()
*/
bool QWizardPage::isCommitPage() const
{
Q_D(const QWizardPage);
return d->commit;
}
/*!
Sets the text on button \a which to be \a text on this page.
By default, the text on buttons depends on the QWizard::wizardStyle,
but may be redefined for the wizard as a whole using QWizard::setButtonText().
\sa buttonText(), QWizard::setButtonText(), QWizard::buttonText()
*/
void QWizardPage::setButtonText(QWizard::WizardButton which, const QString &text)
{
Q_D(QWizardPage);
d->buttonCustomTexts.insert(which, text);
if (wizard() && wizard()->currentPage() == this && wizard()->d_func()->btns[which])
wizard()->d_func()->btns[which]->setText(text);
}
/*!
Returns the text on button \a which on this page.
If a text has ben set using setButtonText(), this text is returned.
Otherwise, if a text has been set using QWizard::setButtonText(),
this text is returned.
By default, the text on buttons depends on the QWizard::wizardStyle.
For example, on Mac OS X, the \gui Next button is called \gui
Continue.
\sa setButtonText(), QWizard::buttonText(), QWizard::setButtonText()
*/
QString QWizardPage::buttonText(QWizard::WizardButton which) const
{
Q_D(const QWizardPage);
if (d->buttonCustomTexts.contains(which))
return d->buttonCustomTexts.value(which);
if (wizard())
return wizard()->buttonText(which);
return QString();
}
/*!
This virtual function is called by QWizard::nextId() to find
out which page to show when the user clicks the \gui Next button.
The return value is the ID of the next page, or -1 if no page follows.
By default, this function returns the lowest ID greater than the ID
of the current page, or -1 if there is no such ID.
By reimplementing this function, you can specify a dynamic page
order. For example:
\snippet examples/dialogs/licensewizard/licensewizard.cpp 18
\sa QWizard::nextId()
*/
int QWizardPage::nextId() const
{
Q_D(const QWizardPage);
if (!d->wizard)
return -1;
bool foundCurrentPage = false;
const QWizardPrivate::PageMap &pageMap = d->wizard->d_func()->pageMap;
QWizardPrivate::PageMap::const_iterator i = pageMap.constBegin();
QWizardPrivate::PageMap::const_iterator end = pageMap.constEnd();
for (; i != end; ++i) {
if (i.value() == this) {
foundCurrentPage = true;
} else if (foundCurrentPage) {
return i.key();
}
}
return -1;
}
/*!
\fn void QWizardPage::completeChanged()
This signal is emitted whenever the complete state of the page
(i.e., the value of isComplete()) changes.
If you reimplement isComplete(), make sure to emit
completeChanged() whenever the value of isComplete() changes, to
ensure that QWizard updates the enabled or disabled state of its
buttons.
\sa isComplete()
*/
/*!
Sets the value of the field called \a name to \a value.
This function can be used to set fields on any page of the wizard.
It is equivalent to calling
wizard()->\l{QWizard::setField()}{setField(\a name, \a value)}.
\sa QWizard::setField(), field(), registerField()
*/
void QWizardPage::setField(const QString &name, const QVariant &value)
{
Q_D(QWizardPage);
if (!d->wizard)
return;
d->wizard->setField(name, value);
}
/*!
Returns the value of the field called \a name.
This function can be used to access fields on any page of the
wizard. It is equivalent to calling
wizard()->\l{QWizard::field()}{field(\a name)}.
Example:
\snippet examples/dialogs/classwizard/classwizard.cpp 17
\sa QWizard::field(), setField(), registerField()
*/
QVariant QWizardPage::field(const QString &name) const
{
Q_D(const QWizardPage);
if (!d->wizard)
return QVariant();
return d->wizard->field(name);
}
/*!
Creates a field called \a name associated with the given \a
property of the given \a widget. From then on, that property
becomes accessible using field() and setField().
Fields are global to the entire wizard and make it easy for any
single page to access information stored by another page, without
having to put all the logic in QWizard or having the pages know
explicitly about each other.
If \a name ends with an asterisk (\c *), the field is a mandatory
field. When a page has mandatory fields, the \gui Next and/or
\gui Finish buttons are enabled only when all mandatory fields
are filled. This requires a \a changedSignal to be specified, to
tell QWizard to recheck the value stored by the mandatory field.
QWizard knows the most common Qt widgets. For these (or their
subclasses), you don't need to specify a \a property or a \a
changedSignal. The table below lists these widgets:
\table
\header \o Widget \o Property \o Change Notification Signal
\row \o QAbstractButton \o bool \l{QAbstractButton::}{checked} \o \l{QAbstractButton::}{toggled()}
\row \o QAbstractSlider \o int \l{QAbstractSlider::}{value} \o \l{QAbstractSlider::}{valueChanged()}
\row \o QComboBox \o int \l{QComboBox::}{currentIndex} \o \l{QComboBox::}{currentIndexChanged()}
\row \o QDateTimeEdit \o QDateTime \l{QDateTimeEdit::}{dateTime} \o \l{QDateTimeEdit::}{dateTimeChanged()}
\row \o QLineEdit \o QString \l{QLineEdit::}{text} \o \l{QLineEdit::}{textChanged()}
\row \o QListWidget \o int \l{QListWidget::}{currentRow} \o \l{QListWidget::}{currentRowChanged()}
\row \o QSpinBox \o int \l{QSpinBox::}{value} \o \l{QSpinBox::}{valueChanged()}
\endtable
You can use QWizard::setDefaultProperty() to add entries to this
table or to override existing entries.
To consider a field "filled", QWizard simply checks that their
current value doesn't equal their original value (the value they
had before initializePage() was called). For QLineEdit, it also
checks that
\l{QLineEdit::hasAcceptableInput()}{hasAcceptableInput()} returns
true, to honor any validator or mask.
QWizard's mandatory field mechanism is provided for convenience.
It can be bypassed by reimplementing QWizardPage::isComplete().
\sa field(), setField(), QWizard::setDefaultProperty()
*/
void QWizardPage::registerField(const QString &name, QWidget *widget, const char *property,
const char *changedSignal)
{
Q_D(QWizardPage);
QWizardField field(this, name, widget, property, changedSignal);
if (d->wizard) {
d->wizard->d_func()->addField(field);
} else {
d->pendingFields += field;
}
}
/*!
Returns the wizard associated with this page, or 0 if this page
hasn't been inserted into a QWizard yet.
\sa QWizard::addPage(), QWizard::setPage()
*/
QWizard *QWizardPage::wizard() const
{
Q_D(const QWizardPage);
return d->wizard;
}
QT_END_NAMESPACE
#include "moc_qwizard.cpp"
#endif // QT_NO_WIZARD