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authorLars Knoll <lars.knoll@nokia.com>2009-03-23 09:18:55 (GMT)
committerSimon Hausmann <simon.hausmann@nokia.com>2009-03-23 09:18:55 (GMT)
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treec2afbf6f1066b6ce261f14341cf6d310e5595bc1 /src/gui/widgets/qdialogbuttonbox.cpp
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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"