Long live Qt 4.5!

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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/qhash.h>
+#include <QtGui/qpushbutton.h>
+#include <QtGui/qstyle.h>
+#include <QtGui/qlayout.h>
+#include <QtGui/qdialog.h>
+#include <QtGui/qapplication.h>
+#include <QtGui/private/qwidget_p.h>
+
+#include "qdialogbuttonbox.h"
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QDialogButtonBox
+    \since 4.2
+    \brief The QDialogButtonBox class is a widget that presents buttons in a
+    layout that is appropriate to the current widget style.
+
+    \ingroup application
+    \mainclass
+
+    Dialogs and message boxes typically present buttons in a layout that
+    conforms to the interface guidelines for that platform. Invariably,
+    different platforms have different layouts for their dialogs.
+    QDialogButtonBox allows a developer to add buttons to it and will
+    automatically use the appropriate layout for the user's desktop
+    environment.
+
+    Most buttons for a dialog follow certain roles. Such roles include:
+
+    \list
+    \o Accepting or rejecting the dialog.
+    \o Asking for help.
+    \o Performing actions on the dialog itself (such as resetting fields or
+       applying changes).
+    \endlist
+
+    There can also be alternate ways of dismissing the dialog which may cause
+    destructive results.
+
+    Most dialogs have buttons that can almost be considered standard (e.g.
+    \gui OK and \gui Cancel buttons). It is sometimes convenient to create these
+    buttons in a standard way.
+
+    There are a couple ways of using QDialogButtonBox. One ways is to create
+    the buttons (or button texts) yourself and add them to the button box,
+    specifying their role.
+
+    \snippet examples/dialogs/extension/finddialog.cpp 1
+
+    Alternatively, QDialogButtonBox provides several standard buttons (e.g. OK, Cancel, Save)
+    that you can use. They exist as flags so you can OR them together in the constructor.
+
+    \snippet examples/dialogs/tabdialog/tabdialog.cpp 2
+
+    You can mix and match normal buttons and standard buttons.
+
+    Currently the buttons are laid out in the following way if the button box is horizontal:
+    \table 100%
+    \row \o \inlineimage buttonbox-gnomelayout-horizontal.png GnomeLayout Horizontal
+         \o Button box laid out in horizontal GnomeLayout
+    \row \o \inlineimage buttonbox-kdelayout-horizontal.png KdeLayout Horizontal
+         \o Button box laid out in horizontal KdeLayout
+    \row \o \inlineimage buttonbox-maclayout-horizontal.png MacLayout Horizontal
+         \o Button box laid out in horizontal MacLayout
+    \row \o \inlineimage buttonbox-winlayout-horizontal.png  WinLayout Horizontal
+         \o Button box laid out in horizontal WinLayout
+    \endtable
+
+    The buttons are laid out the following way if the button box is vertical:
+
+    \table 100%
+    \row \o \inlineimage buttonbox-gnomelayout-vertical.png GnomeLayout Vertical
+         \o Button box laid out in vertical GnomeLayout
+    \row \o \inlineimage buttonbox-kdelayout-vertical.png KdeLayout Vertical
+         \o Button box laid out in vertical KdeLayout
+    \row \o \inlineimage buttonbox-maclayout-vertical.png MacLayout Vertical
+         \o Button box laid out in vertical MacLayout
+    \row \o \inlineimage buttonbox-winlayout-vertical.png WinLayout Vertical
+         \o Button box laid out in vertical WinLayout
+    \endtable
+
+    Additionally, button boxes that contain only buttons with ActionRole or
+    HelpRole can be considered modeless and have an alternate look on the mac:
+
+    \table 100%
+    \row \o \inlineimage buttonbox-mac-modeless-horizontal.png Screenshot of modeless horizontal MacLayout
+         \o modeless horizontal MacLayout
+    \row \o \inlineimage buttonbox-mac-modeless-vertical.png Screenshot of modeless vertical MacLayout
+         \o modeless vertical MacLayout
+    \endtable
+
+    When a button is clicked in the button box, the clicked() signal is emitted
+    for the actual button is that is pressed. For convenience, if the button
+    has an AcceptRole, RejectRole, or HelpRole, the accepted(), rejected(), or
+    helpRequested() signals are emitted respectively.
+
+    If you want a specific button to be default you need to call
+    QPushButton::setDefault() on it yourself. However, if there is no default
+    button set and to preserve which button is the default button across
+    platforms when using the QPushButton::autoDefault property, the first push
+    button with the accept role is made the default button when the
+    QDialogButtonBox is shown,
+
+    \sa QMessageBox, QPushButton, QDialog
+*/
+
+enum {
+    AcceptRole      = QDialogButtonBox::AcceptRole,
+    RejectRole      = QDialogButtonBox::RejectRole,
+    DestructiveRole = QDialogButtonBox::DestructiveRole,
+    ActionRole      = QDialogButtonBox::ActionRole,
+    HelpRole        = QDialogButtonBox::HelpRole,
+    YesRole         = QDialogButtonBox::YesRole,
+    NoRole          = QDialogButtonBox::NoRole,
+    ApplyRole       = QDialogButtonBox::ApplyRole,
+    ResetRole       = QDialogButtonBox::ResetRole,
+
+    AlternateRole   = 0x10000000,
+    Stretch         = 0x20000000,
+    EOL             = 0x40000000,
+    Reverse         = 0x80000000
+};
+
+static QDialogButtonBox::ButtonRole roleFor(QDialogButtonBox::StandardButton button)
+{
+    switch (button) {
+    case QDialogButtonBox::Ok:
+    case QDialogButtonBox::Save:
+    case QDialogButtonBox::Open:
+    case QDialogButtonBox::SaveAll:
+    case QDialogButtonBox::Retry:
+    case QDialogButtonBox::Ignore:
+        return QDialogButtonBox::AcceptRole;
+
+    case QDialogButtonBox::Cancel:
+    case QDialogButtonBox::Close:
+    case QDialogButtonBox::Abort:
+        return QDialogButtonBox::RejectRole;
+
+    case QDialogButtonBox::Discard:
+        return QDialogButtonBox::DestructiveRole;
+
+    case QDialogButtonBox::Help:
+        return QDialogButtonBox::HelpRole;
+
+    case QDialogButtonBox::Apply:
+        return QDialogButtonBox::ApplyRole;
+
+    case QDialogButtonBox::Yes:
+    case QDialogButtonBox::YesToAll:
+        return QDialogButtonBox::YesRole;
+
+    case QDialogButtonBox::No:
+    case QDialogButtonBox::NoToAll:
+        return QDialogButtonBox::NoRole;
+
+    case QDialogButtonBox::RestoreDefaults:
+    case QDialogButtonBox::Reset:
+        return QDialogButtonBox::ResetRole;
+
+    case QDialogButtonBox::NoButton:    // NoButton means zero buttons, not "No" button
+        ;
+    }
+
+    return QDialogButtonBox::InvalidRole;
+}
+
+static const int layouts[2][5][14] =
+{
+    // Qt::Horizontal
+    {
+        // WinLayout
+        { ResetRole, Stretch, YesRole, AcceptRole, AlternateRole, DestructiveRole, NoRole, ActionRole, RejectRole, ApplyRole,
+           HelpRole, EOL, EOL, EOL },
+
+        // MacLayout
+        { HelpRole, ResetRole, ApplyRole, ActionRole, Stretch, DestructiveRole | Reverse,
+          AlternateRole | Reverse, RejectRole | Reverse, AcceptRole | Reverse, NoRole | Reverse, YesRole | Reverse, EOL, EOL },
+
+        // KdeLayout
+        { HelpRole, ResetRole, Stretch, YesRole, NoRole, ActionRole, AcceptRole, AlternateRole,
+          ApplyRole, DestructiveRole, RejectRole, EOL },
+
+        // GnomeLayout
+        { HelpRole, ResetRole, Stretch, ActionRole, ApplyRole | Reverse, DestructiveRole | Reverse,
+          AlternateRole | Reverse, RejectRole | Reverse, AcceptRole | Reverse, NoRole | Reverse, YesRole | Reverse, EOL },
+
+        // Mac modeless
+        { ResetRole, ApplyRole, ActionRole, Stretch, HelpRole, EOL, EOL, EOL, EOL, EOL, EOL, EOL, EOL, EOL }
+    },
+
+    // Qt::Vertical
+    {
+        // WinLayout
+        { ActionRole, YesRole, AcceptRole, AlternateRole, DestructiveRole, NoRole, RejectRole, ApplyRole, ResetRole,
+          HelpRole, Stretch, EOL, EOL, EOL },
+
+        // MacLayout
+        { YesRole, NoRole, AcceptRole, RejectRole, AlternateRole, DestructiveRole, Stretch, ActionRole, ApplyRole,
+          ResetRole, HelpRole, EOL, EOL },
+
+        // KdeLayout
+        { AcceptRole, AlternateRole, ApplyRole, ActionRole, YesRole, NoRole, Stretch, ResetRole,
+          DestructiveRole, RejectRole, HelpRole, EOL },
+
+        // GnomeLayout
+        { YesRole, NoRole, AcceptRole, RejectRole, AlternateRole, DestructiveRole, ApplyRole, ActionRole, Stretch,
+          ResetRole, HelpRole, EOL, EOL, EOL },
+
+        // Mac modeless
+        { ActionRole, ApplyRole, ResetRole, Stretch, HelpRole, EOL, EOL, EOL, EOL, EOL, EOL, EOL, EOL, EOL }
+    }
+};
+
+class QDialogButtonBoxPrivate : public QWidgetPrivate
+{
+    Q_DECLARE_PUBLIC(QDialogButtonBox)
+
+public:
+    QDialogButtonBoxPrivate(Qt::Orientation orient);
+
+    QList<QAbstractButton *> buttonLists[QDialogButtonBox::NRoles];
+    QHash<QPushButton *, QDialogButtonBox::StandardButton> standardButtonHash;
+
+    Qt::Orientation orientation;
+    QDialogButtonBox::ButtonLayout layoutPolicy;
+    QBoxLayout *buttonLayout;
+    bool internalRemove;
+    bool center;
+
+    void createStandardButtons(QDialogButtonBox::StandardButtons buttons);
+
+    void layoutButtons();
+    void initLayout();
+    void resetLayout();
+    QPushButton *createButton(QDialogButtonBox::StandardButton button, bool doLayout = true);
+    void addButton(QAbstractButton *button, QDialogButtonBox::ButtonRole role, bool doLayout = true);
+    void _q_handleButtonDestroyed();
+    void _q_handleButtonClicked();
+    void addButtonsToLayout(const QList<QAbstractButton *> &buttonList, bool reverse);
+    void retranslateStrings();
+    const char *standardButtonText(QDialogButtonBox::StandardButton sbutton) const;
+};
+
+QDialogButtonBoxPrivate::QDialogButtonBoxPrivate(Qt::Orientation orient)
+    : orientation(orient), buttonLayout(0), internalRemove(false), center(false)
+{
+}
+
+void QDialogButtonBoxPrivate::initLayout()
+{
+    Q_Q(QDialogButtonBox);
+    layoutPolicy = QDialogButtonBox::ButtonLayout(q->style()->styleHint(QStyle::SH_DialogButtonLayout, 0, q));
+    bool createNewLayout = buttonLayout == 0
+        || (orientation == Qt::Horizontal && qobject_cast<QVBoxLayout *>(buttonLayout) != 0)
+        || (orientation == Qt::Vertical && qobject_cast<QHBoxLayout *>(buttonLayout) != 0);
+    if (createNewLayout) {
+        delete buttonLayout;
+        if (orientation == Qt::Horizontal)
+            buttonLayout = new QHBoxLayout(q);
+        else
+            buttonLayout = new QVBoxLayout(q);
+    }
+
+	int left, top, right, bottom;
+    setLayoutItemMargins(QStyle::SE_PushButtonLayoutItem);
+	getLayoutItemMargins(&left, &top, &right, &bottom);
+    buttonLayout->setContentsMargins(-left, -top, -right, -bottom);
+
+    if (!q->testAttribute(Qt::WA_WState_OwnSizePolicy)) {
+        QSizePolicy sp(QSizePolicy::Expanding, QSizePolicy::Fixed, QSizePolicy::ButtonBox);
+        if (orientation == Qt::Vertical)
+            sp.transpose();
+        q->setSizePolicy(sp);
+        q->setAttribute(Qt::WA_WState_OwnSizePolicy, false);
+    }
+
+    // ### move to a real init() function
+    q->setFocusPolicy(Qt::TabFocus);
+}
+
+void QDialogButtonBoxPrivate::resetLayout()
+{
+    //delete buttonLayout;
+    initLayout();
+    layoutButtons();
+}
+
+void QDialogButtonBoxPrivate::addButtonsToLayout(const QList<QAbstractButton *> &buttonList,
+                                                 bool reverse)
+{
+    int start = reverse ? buttonList.count() - 1 : 0;
+    int end = reverse ? -1 : buttonList.count();
+    int step = reverse ? -1 : 1;
+
+    for (int i = start; i != end; i += step) {
+        QAbstractButton *button = buttonList.at(i);
+        buttonLayout->addWidget(button);
+        button->show();
+    }
+}
+
+void QDialogButtonBoxPrivate::layoutButtons()
+{
+    Q_Q(QDialogButtonBox);
+    const int MacGap = 36 - 8;	// 8 is the default gap between a widget and a spacer item
+
+    for (int i = buttonLayout->count() - 1; i >= 0; --i) {
+        QLayoutItem *item = buttonLayout->takeAt(i);
+        if (QWidget *widget = item->widget())
+            widget->hide();
+        delete item;
+    }
+
+    int tmpPolicy = layoutPolicy;
+
+    static const int M = 5;
+    static const int ModalRoles[M] = { AcceptRole, RejectRole, DestructiveRole, YesRole, NoRole };
+    if (tmpPolicy == QDialogButtonBox::MacLayout) {
+        bool hasModalButton = false;
+        for (int i = 0; i < M; ++i) {
+            if (!buttonLists[ModalRoles[i]].isEmpty()) {
+                hasModalButton = true;
+                break;
+            }
+        }
+        if (!hasModalButton)
+            tmpPolicy = 4;  // Mac modeless
+    }
+
+    const int *currentLayout = layouts[orientation == Qt::Vertical][tmpPolicy];
+
+    if (center)
+        buttonLayout->addStretch();
+
+    QList<QAbstractButton *> acceptRoleList = buttonLists[AcceptRole];
+
+    while (*currentLayout != EOL) {
+        int role = (*currentLayout & ~Reverse);
+        bool reverse = (*currentLayout & Reverse);
+
+        switch (role) {
+        case Stretch:
+            if (!center)
+                buttonLayout->addStretch();
+            break;
+        case AcceptRole: {
+            if (acceptRoleList.isEmpty())
+                break;
+            // Only the first one
+            QAbstractButton *button = acceptRoleList.first();
+            buttonLayout->addWidget(button);
+            button->show();
+        }
+            break;
+        case AlternateRole:
+            {
+                if (acceptRoleList.size() < 2)
+                    break;
+                QList<QAbstractButton *> list = acceptRoleList;
+                list.removeFirst();
+                addButtonsToLayout(list, reverse);
+            }
+            break;
+        case DestructiveRole:
+            {
+                const QList<QAbstractButton *> &list = buttonLists[role];
+
+                /*
+                    Mac: Insert a gap on the left of the destructive
+                    buttons to ensure that they don't get too close to
+                    the help and action buttons (but only if there are
+                    some buttons to the left of the destructive buttons
+                    (and the stretch, whence buttonLayout->count() > 1
+                    and not 0)).
+                */
+                if (tmpPolicy == QDialogButtonBox::MacLayout
+                        && !list.isEmpty() && buttonLayout->count() > 1)
+                    buttonLayout->addSpacing(MacGap);
+
+                addButtonsToLayout(list, reverse);
+
+                /*
+                    Insert a gap between the destructive buttons and the
+                    accept and reject buttons.
+                */
+                if (tmpPolicy == QDialogButtonBox::MacLayout && !list.isEmpty())
+                    buttonLayout->addSpacing(MacGap);
+            }
+            break;
+        case RejectRole:
+        case ActionRole:
+        case HelpRole:
+        case YesRole:
+        case NoRole:
+        case ApplyRole:
+        case ResetRole:
+            addButtonsToLayout(buttonLists[role], reverse);
+        }
+        ++currentLayout;
+    }
+
+    QWidget *lastWidget = 0;
+    q->setFocusProxy(0);
+    for (int i = 0; i < buttonLayout->count(); ++i) {
+        QLayoutItem *item = buttonLayout->itemAt(i);
+        if (QWidget *widget = item->widget()) {
+            if (lastWidget)
+                QWidget::setTabOrder(lastWidget, widget);
+            else
+                q->setFocusProxy(widget);
+            lastWidget = widget;
+        }
+    }
+
+    if (center)
+        buttonLayout->addStretch();
+}
+
+QPushButton *QDialogButtonBoxPrivate::createButton(QDialogButtonBox::StandardButton sbutton,
+                                                   bool doLayout)
+{
+    Q_Q(QDialogButtonBox);
+    const char *buttonText = 0;
+    int icon = 0;
+
+    switch (sbutton) {
+    case QDialogButtonBox::Ok:
+        icon = QStyle::SP_DialogOkButton;
+        break;
+    case QDialogButtonBox::Save:
+        icon = QStyle::SP_DialogSaveButton;
+        break;
+    case QDialogButtonBox::Open:
+        icon = QStyle::SP_DialogOpenButton;
+        break;
+    case QDialogButtonBox::Cancel:
+        icon = QStyle::SP_DialogCancelButton;
+        break;
+    case QDialogButtonBox::Close:
+        icon = QStyle::SP_DialogCloseButton;
+        break;
+    case QDialogButtonBox::Apply:
+        icon = QStyle::SP_DialogApplyButton;
+        break;
+    case QDialogButtonBox::Reset:
+        icon = QStyle::SP_DialogResetButton;
+        break;
+    case QDialogButtonBox::Help:
+        icon = QStyle::SP_DialogHelpButton;
+        break;
+    case QDialogButtonBox::Discard:
+        icon = QStyle::SP_DialogDiscardButton;
+        break;
+    case QDialogButtonBox::Yes:
+        icon = QStyle::SP_DialogYesButton;
+        break;
+    case QDialogButtonBox::No:
+        icon = QStyle::SP_DialogNoButton;
+        break;
+    case QDialogButtonBox::YesToAll:
+    case QDialogButtonBox::NoToAll:
+    case QDialogButtonBox::SaveAll:
+    case QDialogButtonBox::Abort:
+    case QDialogButtonBox::Retry:
+    case QDialogButtonBox::Ignore:
+    case QDialogButtonBox::RestoreDefaults:
+        break;
+    case QDialogButtonBox::NoButton:
+        return 0;
+        ;
+    }
+    buttonText = standardButtonText(sbutton);
+
+    QPushButton *button = new QPushButton(QDialogButtonBox::tr(buttonText), q);
+    QStyle *style = q->style();
+    if (style->styleHint(QStyle::SH_DialogButtonBox_ButtonsHaveIcons, 0, q) && icon != 0)
+        button->setIcon(style->standardIcon(QStyle::StandardPixmap(icon), 0, q));
+    if (style != QApplication::style()) // Propagate style
+        button->setStyle(style);
+    standardButtonHash.insert(button, sbutton);
+    if (roleFor(sbutton) != QDialogButtonBox::InvalidRole) {
+        addButton(button, roleFor(sbutton), doLayout);
+    } else {
+        qWarning("QDialogButtonBox::createButton: Invalid ButtonRole, button not added");
+    }
+    return button;
+}
+
+void QDialogButtonBoxPrivate::addButton(QAbstractButton *button, QDialogButtonBox::ButtonRole role,
+                                        bool doLayout)
+{
+    Q_Q(QDialogButtonBox);
+    QObject::connect(button, SIGNAL(clicked()), q, SLOT(_q_handleButtonClicked()));
+    QObject::connect(button, SIGNAL(destroyed()), q, SLOT(_q_handleButtonDestroyed()));
+    buttonLists[role].append(button);
+    if (doLayout)
+        layoutButtons();
+}
+
+void QDialogButtonBoxPrivate::createStandardButtons(QDialogButtonBox::StandardButtons buttons)
+{
+    uint i = QDialogButtonBox::FirstButton;
+    while (i <= QDialogButtonBox::LastButton) {
+        if (i & buttons) {
+            createButton(QDialogButtonBox::StandardButton(i), false);
+        }
+        i = i << 1;
+    }
+    layoutButtons();
+}
+
+const char *QDialogButtonBoxPrivate::standardButtonText(QDialogButtonBox::StandardButton sbutton) const
+{
+    const char *buttonText = 0;
+    bool gnomeLayout = (layoutPolicy == QDialogButtonBox::GnomeLayout);
+    switch (sbutton) {
+    case QDialogButtonBox::Ok:
+        buttonText = gnomeLayout ? QT_TRANSLATE_NOOP("QDialogButtonBox", "&OK") : QT_TRANSLATE_NOOP("QDialogButtonBox", "OK");
+        break;
+    case QDialogButtonBox::Save:
+        buttonText = gnomeLayout ? QT_TRANSLATE_NOOP("QDialogButtonBox", "&Save") : QT_TRANSLATE_NOOP("QDialogButtonBox", "Save");
+        break;
+    case QDialogButtonBox::Open:
+        buttonText = QT_TRANSLATE_NOOP("QDialogButtonBox", "Open");
+        break;
+    case QDialogButtonBox::Cancel:
+        buttonText = gnomeLayout ? QT_TRANSLATE_NOOP("QDialogButtonBox", "&Cancel") : QT_TRANSLATE_NOOP("QDialogButtonBox", "Cancel");
+        break;
+    case QDialogButtonBox::Close:
+        buttonText = gnomeLayout ? QT_TRANSLATE_NOOP("QDialogButtonBox", "&Close") : QT_TRANSLATE_NOOP("QDialogButtonBox", "Close");
+        break;
+    case QDialogButtonBox::Apply:
+        buttonText = QT_TRANSLATE_NOOP("QDialogButtonBox", "Apply");
+        break;
+    case QDialogButtonBox::Reset:
+        buttonText = QT_TRANSLATE_NOOP("QDialogButtonBox", "Reset");
+        break;
+    case QDialogButtonBox::Help:
+        buttonText = QT_TRANSLATE_NOOP("QDialogButtonBox", "Help");
+        break;
+    case QDialogButtonBox::Discard:
+        if (layoutPolicy == QDialogButtonBox::MacLayout)
+            buttonText = QT_TRANSLATE_NOOP("QDialogButtonBox", "Don't Save");
+        else if (layoutPolicy == QDialogButtonBox::GnomeLayout)
+            buttonText = QT_TRANSLATE_NOOP("QDialogButtonBox", "Close without Saving");
+        else
+            buttonText = QT_TRANSLATE_NOOP("QDialogButtonBox", "Discard");
+        break;
+    case QDialogButtonBox::Yes:
+        buttonText = QT_TRANSLATE_NOOP("QDialogButtonBox", "&Yes");
+        break;
+    case QDialogButtonBox::YesToAll:
+        buttonText = QT_TRANSLATE_NOOP("QDialogButtonBox", "Yes to &All");
+        break;
+    case QDialogButtonBox::No:
+        buttonText = QT_TRANSLATE_NOOP("QDialogButtonBox", "&No");
+        break;
+    case QDialogButtonBox::NoToAll:
+        buttonText = QT_TRANSLATE_NOOP("QDialogButtonBox", "N&o to All");
+        break;
+    case QDialogButtonBox::SaveAll:
+        buttonText = QT_TRANSLATE_NOOP("QDialogButtonBox", "Save All");
+        break;
+    case QDialogButtonBox::Abort:
+        buttonText = QT_TRANSLATE_NOOP("QDialogButtonBox", "Abort");
+        break;
+    case QDialogButtonBox::Retry:
+        buttonText = QT_TRANSLATE_NOOP("QDialogButtonBox", "Retry");
+        break;
+    case QDialogButtonBox::Ignore:
+        buttonText = QT_TRANSLATE_NOOP("QDialogButtonBox", "Ignore");
+        break;
+    case QDialogButtonBox::RestoreDefaults:
+        buttonText = QT_TRANSLATE_NOOP("QDialogButtonBox", "Restore Defaults");
+        break;
+    case QDialogButtonBox::NoButton:
+        ;
+    } // switch
+    return buttonText;
+}
+
+void QDialogButtonBoxPrivate::retranslateStrings()
+{
+    const char *buttonText = 0;
+    QHash<QPushButton *, QDialogButtonBox::StandardButton>::iterator it =  standardButtonHash.begin();
+    while (it != standardButtonHash.end()) {
+        buttonText = standardButtonText(it.value());
+        if (buttonText) {
+            QPushButton *button = it.key();
+            button->setText(QDialogButtonBox::tr(buttonText));
+        }
+        ++it;
+    }
+}
+
+/*!
+    Constructs an empty, horizontal button box with the given \a parent.
+
+    \sa orientation, addButton()
+*/
+QDialogButtonBox::QDialogButtonBox(QWidget *parent)
+    : QWidget(*new QDialogButtonBoxPrivate(Qt::Horizontal), parent, 0)
+{
+    d_func()->initLayout();
+}
+
+/*!
+    Constructs an empty button box with the given \a orientation and \a parent.
+
+    \sa orientation, addButton()
+*/
+QDialogButtonBox::QDialogButtonBox(Qt::Orientation orientation, QWidget *parent)
+    : QWidget(*new QDialogButtonBoxPrivate(orientation), parent, 0)
+{
+    d_func()->initLayout();
+}
+
+/*!
+    Constructs a button box with the given \a orientation and \a parent, containing
+    the standard buttons specified by \a buttons.
+
+    \sa orientation, addButton()
+*/
+QDialogButtonBox::QDialogButtonBox(StandardButtons buttons, Qt::Orientation orientation,
+                                   QWidget *parent)
+    : QWidget(*new QDialogButtonBoxPrivate(orientation), parent, 0)
+{
+    d_func()->initLayout();
+    d_func()->createStandardButtons(buttons);
+}
+
+/*!
+    Destroys the button box.
+*/
+QDialogButtonBox::~QDialogButtonBox()
+{
+}
+
+/*!
+    \enum QDialogButtonBox::ButtonRole
+    \enum QMessageBox::ButtonRole
+
+    This enum describes the roles that can be used to describe buttons in
+    the button box. Combinations of these roles are as flags used to
+    describe different aspects of their behavior.
+
+    \value InvalidRole The button is invalid.
+    \value AcceptRole Clicking the button causes the dialog to be accepted
+           (e.g. OK).
+    \value RejectRole Clicking the button causes the dialog to be rejected
+           (e.g. Cancel).
+    \value DestructiveRole Clicking the button causes a destructive change
+           (e.g. for Discarding Changes) and closes the dialog.
+    \value ActionRole Clicking the button causes changes to the elements within
+           the dialog.
+    \value HelpRole The button can be clicked to request help.
+    \value YesRole The button is a "Yes"-like button.
+    \value NoRole The button is a "No"-like button.
+    \value ApplyRole The button applies current changes.
+    \value ResetRole The button resets the dialog's fields to default values.
+
+    \omitvalue NRoles
+
+    \sa StandardButton
+*/
+
+/*!
+    \enum QDialogButtonBox::StandardButton
+
+    These enums describe flags for standard buttons. Each button has a
+    defined \l ButtonRole.
+
+    \value Ok An "OK" button defined with the \l AcceptRole.
+    \value Open A "Open" button defined with the \l AcceptRole.
+    \value Save A "Save" button defined with the \l AcceptRole.
+    \value Cancel A "Cancel" button defined with the \l RejectRole.
+    \value Close A "Close" button defined with the \l RejectRole.
+    \value Discard A "Discard" or "Don't Save" button, depending on the platform,
+                    defined with the \l DestructiveRole.
+    \value Apply An "Apply" button defined with the \l ApplyRole.
+    \value Reset A "Reset" button defined with the \l ResetRole.
+    \value RestoreDefaults A "Restore Defaults" button defined with the \l ResetRole.
+    \value Help A "Help" button defined with the \l HelpRole.
+    \value SaveAll A "Save All" button defined with the \l AcceptRole.
+    \value Yes A "Yes" button defined with the \l YesRole.
+    \value YesToAll A "Yes to All" button defined with the \l YesRole.
+    \value No A "No" button defined with the \l NoRole.
+    \value NoToAll A "No to All" button defined with the \l NoRole.
+    \value Abort An "Abort" button defined with the \l RejectRole.
+    \value Retry A "Retry" button defined with the \l AcceptRole.
+    \value Ignore An "Ignore" button defined with the \l AcceptRole.
+
+    \value NoButton An invalid button.
+
+    \omitvalue FirstButton
+    \omitvalue LastButton
+
+    \sa ButtonRole, standardButtons
+*/
+
+/*!
+    \enum QDialogButtonBox::ButtonLayout
+
+    This enum describes the layout policy to be used when arranging the buttons
+    contained in the button box.
+
+    \value WinLayout Use a policy appropriate for applications on Windows.
+    \value MacLayout Use a policy appropriate for applications on Mac OS X.
+    \value KdeLayout Use a policy appropriate for applications on KDE.
+    \value GnomeLayout Use a policy appropriate for applications on GNOME.
+
+    The button layout is specified by the \l{style()}{current style}.
+*/
+
+/*!
+    \fn void QDialogButtonBox::clicked(QAbstractButton *button)
+
+    This signal is emitted when a button inside the button box is clicked. The
+    specific button that was pressed is specified by \a button.
+
+    \sa accepted(), rejected(), helpRequested()
+*/
+
+/*!
+    \fn void QDialogButtonBox::accepted()
+
+    This signal is emitted when a button inside the button box is clicked, as long
+    as it was defined with the \l AcceptRole or \l YesRole.
+
+    \sa rejected(), clicked() helpRequested()
+*/
+
+/*!
+    \fn void QDialogButtonBox::rejected()
+
+    This signal is emitted when a button inside the button box is clicked, as long
+    as it was defined with the \l RejectRole or \l NoRole.
+
+    \sa accepted() helpRequested() clicked()
+*/
+
+/*!
+    \fn void QDialogButtonBox::helpRequested()
+
+    This signal is emitted when a button inside the button box is clicked, as long
+    as it was defined with the \l HelpRole.
+
+    \sa accepted() rejected() clicked()
+*/
+
+/*!
+    \property QDialogButtonBox::orientation
+    \brief the orientation of the button box
+
+    By default, the orientation is horizontal (i.e. the buttons are laid out
+    side by side). The possible orientations are Qt::Horizontal and
+    Qt::Vertical.
+*/
+Qt::Orientation QDialogButtonBox::orientation() const
+{
+    return d_func()->orientation;
+}
+
+void QDialogButtonBox::setOrientation(Qt::Orientation orientation)
+{
+    Q_D(QDialogButtonBox);
+    if (orientation == d->orientation)
+        return;
+
+    d->orientation = orientation;
+    d->resetLayout();
+}
+
+/*!
+    Clears the button box, deleting all buttons within it.
+
+    \sa removeButton(), addButton()
+*/
+void QDialogButtonBox::clear()
+{
+    Q_D(QDialogButtonBox);
+    // Remove the created standard buttons, they should be in the other lists, which will
+    // do the deletion
+    d->standardButtonHash.clear();
+    for (int i = 0; i < NRoles; ++i) {
+        QList<QAbstractButton *> &list = d->buttonLists[i];
+        while (list.count()) {
+            QAbstractButton *button = list.takeAt(0);
+            QObject::disconnect(button, SIGNAL(destroyed()), this, SLOT(_q_handleButtonDestroyed()));
+            delete button;
+        }
+    }
+}
+
+/*!
+    Returns a list of all the buttons that have been added to the button box.
+
+    \sa buttonRole(), addButton(), removeButton()
+*/
+QList<QAbstractButton *> QDialogButtonBox::buttons() const
+{
+    Q_D(const QDialogButtonBox);
+    QList<QAbstractButton *> finalList;
+    for (int i = 0; i < NRoles; ++i) {
+        const QList<QAbstractButton *> &list = d->buttonLists[i];
+        for (int j = 0; j < list.count(); ++j)
+            finalList.append(list.at(j));
+    }
+    return finalList;
+}
+
+/*!
+    Returns the button role for the specified \a button. This function returns
+    \l InvalidRole if \a button is 0 or has not been added to the button box.
+
+    \sa buttons(), addButton()
+*/
+QDialogButtonBox::ButtonRole QDialogButtonBox::buttonRole(QAbstractButton *button) const
+{
+    Q_D(const QDialogButtonBox);
+    for (int i = 0; i < NRoles; ++i) {
+        const QList<QAbstractButton *> &list = d->buttonLists[i];
+        for (int j = 0; j < list.count(); ++j) {
+            if (list.at(j) == button)
+                return ButtonRole(i);
+        }
+    }
+    return InvalidRole;
+}
+
+/*!
+    Removes \a button from the button box without deleting it and sets its parent to zero.
+
+    \sa clear(), buttons(), addButton()
+*/
+void QDialogButtonBox::removeButton(QAbstractButton *button)
+{
+    Q_D(QDialogButtonBox);
+
+    if (!button)
+        return;
+
+    // Remove it from the standard button hash first and then from the roles
+    if (QPushButton *pushButton = qobject_cast<QPushButton *>(button))
+        d->standardButtonHash.remove(pushButton);
+    for (int i = 0; i < NRoles; ++i) {
+        QList<QAbstractButton *> &list = d->buttonLists[i];
+        for (int j = 0; j < list.count(); ++j) {
+            if (list.at(j) == button) {
+                list.takeAt(j);
+                if (!d->internalRemove) {
+                    disconnect(button, SIGNAL(clicked()), this, SLOT(_q_handleButtonClicked()));
+                    disconnect(button, SIGNAL(destroyed()), this, SLOT(_q_handleButtonDestroyed()));
+                }
+                break;
+            }
+        }
+    }
+    if (!d->internalRemove)
+        button->setParent(0);
+}
+
+/*!
+    Adds the given \a button to the button box with the specified \a role.
+    If the role is invalid, the button is not added.
+
+    If the button has already been added, it is removed and added again with the
+    new role.
+
+    \sa removeButton(), clear()
+*/
+void QDialogButtonBox::addButton(QAbstractButton *button, ButtonRole role)
+{
+    Q_D(QDialogButtonBox);
+    if (role <= InvalidRole || role >= NRoles) {
+        qWarning("QDialogButtonBox::addButton: Invalid ButtonRole, button not added");
+        return;
+    }
+    removeButton(button);
+    button->setParent(this);
+    d->addButton(button, role);
+}
+
+/*!
+    Creates a push button with the given \a text, adds it to the button box for the
+    specified \a role, and returns the corresponding push button. If \a role is
+    invalid, no button is created, and zero is returned.
+
+    \sa removeButton(), clear()
+*/
+QPushButton *QDialogButtonBox::addButton(const QString &text, ButtonRole role)
+{
+    Q_D(QDialogButtonBox);
+    if (role <= InvalidRole || role >= NRoles) {
+        qWarning("QDialogButtonBox::addButton: Invalid ButtonRole, button not added");
+        return 0;
+    }
+    QPushButton *button = new QPushButton(text, this);
+    d->addButton(button, role);
+    return button;
+}
+
+/*!
+    Adds a standard \a button to the button box if it is valid to do so, and returns
+    a push button. If \a button is invalid, it is not added to the button box, and
+    zero is returned.
+
+    \sa removeButton(), clear()
+*/
+QPushButton *QDialogButtonBox::addButton(StandardButton button)
+{
+    Q_D(QDialogButtonBox);
+    return d->createButton(button);
+}
+
+/*!
+    \property QDialogButtonBox::standardButtons
+    \brief collection of standard buttons in the button box
+
+    This property controls which standard buttons are used by the button box.
+
+    \sa addButton()
+*/
+void QDialogButtonBox::setStandardButtons(StandardButtons buttons)
+{
+    Q_D(QDialogButtonBox);
+    // Clear out all the old standard buttons, then recreate them.
+    qDeleteAll(d->standardButtonHash.keys());
+    d->standardButtonHash.clear();
+
+    d->createStandardButtons(buttons);
+}
+
+QDialogButtonBox::StandardButtons QDialogButtonBox::standardButtons() const
+{
+    Q_D(const QDialogButtonBox);
+    StandardButtons standardButtons = NoButton;
+    QHash<QPushButton *, StandardButton>::const_iterator it = d->standardButtonHash.constBegin();
+    while (it != d->standardButtonHash.constEnd()) {
+        standardButtons |= it.value();
+        ++it;
+    }
+    return standardButtons;
+}
+
+/*!
+    Returns the QPushButton corresponding to the standard button \a which,
+    or 0 if the standard button doesn't exist in this button box.
+
+    \sa standardButton(), standardButtons(), buttons()
+*/
+QPushButton *QDialogButtonBox::button(StandardButton which) const
+{
+    Q_D(const QDialogButtonBox);
+    return d->standardButtonHash.key(which);
+}
+
+/*!
+    Returns the standard button enum value corresponding to the given \a button,
+    or NoButton if the given \a button isn't a standard button.
+
+    \sa button(), buttons(), standardButtons()
+*/
+QDialogButtonBox::StandardButton QDialogButtonBox::standardButton(QAbstractButton *button) const
+{
+    Q_D(const QDialogButtonBox);
+    return d->standardButtonHash.value(static_cast<QPushButton *>(button));
+}
+
+void QDialogButtonBoxPrivate::_q_handleButtonClicked()
+{
+    Q_Q(QDialogButtonBox);
+    if (QAbstractButton *button = qobject_cast<QAbstractButton *>(q->sender())) {
+        emit q->clicked(button);
+
+        switch (q->buttonRole(button)) {
+        case AcceptRole:
+        case YesRole:
+            emit q->accepted();
+            break;
+        case RejectRole:
+        case NoRole:
+            emit q->rejected();
+            break;
+        case HelpRole:
+            emit q->helpRequested();
+            break;
+        default:
+            break;
+        }
+    }
+}
+
+void QDialogButtonBoxPrivate::_q_handleButtonDestroyed()
+{
+    Q_Q(QDialogButtonBox);
+    if (QObject *object = q->sender()) {
+        QBoolBlocker skippy(internalRemove);
+        q->removeButton(static_cast<QAbstractButton *>(object));
+    }
+}
+
+/*!
+    \property QDialogButtonBox::centerButtons
+    \brief whether the buttons in the button box are centered
+
+    By default, this property is false. This behavior is appopriate
+    for most types of dialogs. A notable exception is message boxes
+    on most platforms (e.g. Windows), where the button box is
+    centered horizontally.
+
+    \sa QMessageBox
+*/
+void QDialogButtonBox::setCenterButtons(bool center)
+{
+    Q_D(QDialogButtonBox);
+    if (d->center != center) {
+        d->center = center;
+        d->resetLayout();
+    }
+}
+
+bool QDialogButtonBox::centerButtons() const
+{
+    Q_D(const QDialogButtonBox);
+    return d->center;
+}
+
+/*!
+    \reimp
+*/
+void QDialogButtonBox::changeEvent(QEvent *event)
+{
+    typedef QHash<QPushButton *, QDialogButtonBox::StandardButton> StandardButtonHash;
+
+    Q_D(QDialogButtonBox);
+    switch (event->type()) {
+    case QEvent::StyleChange:  // Propagate style
+        if (!d->standardButtonHash.empty()) {
+            QStyle *newStyle = style();
+            const StandardButtonHash::iterator end = d->standardButtonHash.end();
+            for (StandardButtonHash::iterator it = d->standardButtonHash.begin(); it != end; ++it)
+                it.key()->setStyle(newStyle);
+        }
+        // fallthrough intended
+#ifdef Q_WS_MAC
+    case QEvent::MacSizeChange:
+#endif
+        d->resetLayout();
+        QWidget::changeEvent(event);
+        break;
+    default:
+        QWidget::changeEvent(event);
+        break;
+    }
+}
+
+/*!
+    \reimp
+*/
+bool QDialogButtonBox::event(QEvent *event)
+{
+    Q_D(QDialogButtonBox);
+    if (event->type() == QEvent::Show) {
+        QList<QAbstractButton *> acceptRoleList = d->buttonLists[AcceptRole];
+        QPushButton *firstAcceptButton = acceptRoleList.isEmpty() ? 0 : qobject_cast<QPushButton *>(acceptRoleList.at(0));
+        bool hasDefault = false;
+        QWidget *dialog = 0;
+        QWidget *p = this;
+        while (p && !p->isWindow()) {
+            p = p->parentWidget();
+            if ((dialog = qobject_cast<QDialog *>(p)))
+                break;
+        }
+
+        foreach (QPushButton *pb, qFindChildren<QPushButton *>(dialog ? dialog : this)) {
+            if (pb->isDefault() && pb != firstAcceptButton) {
+                hasDefault = true;
+                break;
+            }
+        }
+        if (!hasDefault && firstAcceptButton)
+            firstAcceptButton->setDefault(true);
+    }else if (event->type() == QEvent::LanguageChange) {
+        d->retranslateStrings();
+    }
+
+    return QWidget::event(event);
+}
+
+QT_END_NAMESPACE
+
+#include "moc_qdialogbuttonbox.cpp"