Windows-4.7.4/src/gui/kernel/qactiongroup.cpp - platform/external/qt - Git at Google

 /****************************************************************************
 **
 ** Copyright (C) 2011 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.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** GNU Lesser General Public License Usage
 ** 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.
 **
 ** 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.
 **
 ** Other Usage
 ** Alternatively, this file may be used in accordance with the terms and
 ** conditions contained in a signed written agreement between you and Nokia.
 **
 **
 **
 **
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include "qactiongroup.h"

 #ifndef QT_NO_ACTION

 #include "qaction_p.h"
 #include "qapplication.h"
 #include "qevent.h"
 #include "qlist.h"

 QT_BEGIN_NAMESPACE

 class QActionGroupPrivate : public QObjectPrivate
 {
     Q_DECLARE_PUBLIC(QActionGroup)
 public:
     QActionGroupPrivate() : exclusive(1), enabled(1), visible(1)  { }
     QList<QAction *> actions;
     QPointer<QAction> current;
     uint exclusive : 1;
     uint enabled : 1;
     uint visible : 1;

 private:
     void _q_actionTriggered();  //private slot
     void _q_actionChanged();    //private slot
     void _q_actionHovered();    //private slot
 };

 void QActionGroupPrivate::_q_actionChanged()
 {
     Q_Q(QActionGroup);
     QAction *action = qobject_cast<QAction*>(q->sender());
     Q_ASSERT_X(action != 0, "QWidgetGroup::_q_actionChanged", "internal error");
     if(exclusive) {
         if (action->isChecked()) {
             if (action != current) {
                 if(current)
                     current->setChecked(false);
                 current = action;
             }
         } else if (action == current) {
             current = 0;
         }
     }
 }

 void QActionGroupPrivate::_q_actionTriggered()
 {
     Q_Q(QActionGroup);
     QAction *action = qobject_cast<QAction*>(q->sender());
     Q_ASSERT_X(action != 0, "QWidgetGroup::_q_actionTriggered", "internal error");
     emit q->triggered(action);
     emit q->selected(action);
 }

 void QActionGroupPrivate::_q_actionHovered()
 {
     Q_Q(QActionGroup);
     QAction *action = qobject_cast<QAction*>(q->sender());
     Q_ASSERT_X(action != 0, "QWidgetGroup::_q_actionHovered", "internal error");
     emit q->hovered(action);
 }

 /*!
     \class QActionGroup
     \brief The QActionGroup class groups actions together.

     \ingroup mainwindow-classes

     In some situations it is useful to group actions together. For
     example, if you have a \gui{Left Align} action, a \gui{Right
     Align} action, a \gui{Justify} action, and a \gui{Center} action,
     only one of these actions should be active at any one time. One
     simple way of achieving this is to group the actions together in
     an action group.

     Here's a example (from the \l{mainwindows/menus}{Menus} example):

     \snippet examples/mainwindows/menus/mainwindow.cpp 6

     Here we create a new action group. Since the action group is
     exclusive by default, only one of the actions in the group is
     checked at any one time.

     \img qactiongroup-align.png Alignment options in a QMenu

     A QActionGroup emits an triggered() signal when one of its
     actions is chosen. Each action in an action group emits its
     triggered() signal as usual.

     As stated above, an action group is \l exclusive by default; it
     ensures that only one checkable action is active at any one time.
     If you want to group checkable actions without making them
     exclusive, you can turn of exclusiveness by calling
     setExclusive(false).

     Actions can be added to an action group using addAction(), but it
     is usually more convenient to specify a group when creating
     actions; this ensures that actions are automatically created with
     a parent. Actions can be visually separated from each other by
     adding a separator action to the group; create an action and use
     QAction's \l {QAction::}{setSeparator()} function to make it
     considered a separator. Action groups are added to widgets with
     the QWidget::addActions() function.

     \sa QAction
 */

 /*!
     Constructs an action group for the \a parent object.

     The action group is exclusive by default. Call setExclusive(false)
     to make the action group non-exclusive.
 */
 QActionGroup::QActionGroup(QObject* parent) : QObject(*new QActionGroupPrivate, parent)
 {
 }

 /*!
     Destroys the action group.
 */
 QActionGroup::~QActionGroup()
 {
 }

 /*!
     \fn QAction *QActionGroup::addAction(QAction *action)

     Adds the \a action to this group, and returns it.

     Normally an action is added to a group by creating it with the
     group as its parent, so this function is not usually used.

     \sa QAction::setActionGroup()
 */
 QAction *QActionGroup::addAction(QAction* a)
 {
     Q_D(QActionGroup);
     if(!d->actions.contains(a)) {
         d->actions.append(a);
         QObject::connect(a, SIGNAL(triggered()), this, SLOT(_q_actionTriggered()));
         QObject::connect(a, SIGNAL(changed()), this, SLOT(_q_actionChanged()));
         QObject::connect(a, SIGNAL(hovered()), this, SLOT(_q_actionHovered()));
     }
     if(!a->d_func()->forceDisabled) {
         a->setEnabled(d->enabled);
         a->d_func()->forceDisabled = false;
     }
     if(!a->d_func()->forceInvisible) {
         a->setVisible(d->visible);
         a->d_func()->forceInvisible = false;
     }
     if(a->isChecked())
         d->current = a;
     QActionGroup *oldGroup = a->d_func()->group;
     if(oldGroup != this) {
         if (oldGroup)
             oldGroup->removeAction(a);
         a->d_func()->group = this;
     }
     return a;
 }

 /*!
     Creates and returns an action with \a text.  The newly created
     action is a child of this action group.

     Normally an action is added to a group by creating it with the
     group as parent, so this function is not usually used.

     \sa QAction::setActionGroup()
 */
 QAction *QActionGroup::addAction(const QString &text)
 {
     return new QAction(text, this);
 }

 /*!
     Creates and returns an action with \a text and an \a icon. The
     newly created action is a child of this action group.

     Normally an action is added to a group by creating it with the
     group as its parent, so this function is not usually used.

     \sa QAction::setActionGroup()
 */
 QAction *QActionGroup::addAction(const QIcon &icon, const QString &text)
 {
     return new QAction(icon, text, this);
 }

 /*!
   Removes the \a action from this group. The action will have no
   parent as a result.

   \sa QAction::setActionGroup()
 */
 void QActionGroup::removeAction(QAction *action)
 {
     Q_D(QActionGroup);
     if (d->actions.removeAll(action)) {
         if (action == d->current)
             d->current = 0;
         QObject::disconnect(action, SIGNAL(triggered()), this, SLOT(_q_actionTriggered()));
         QObject::disconnect(action, SIGNAL(changed()), this, SLOT(_q_actionChanged()));
         QObject::disconnect(action, SIGNAL(hovered()), this, SLOT(_q_actionHovered()));
         action->d_func()->group = 0;
     }
 }

 /*!
     Returns the list of this groups's actions. This may be empty.
 */
 QList<QAction*> QActionGroup::actions() const
 {
     Q_D(const QActionGroup);
     return d->actions;
 }

 /*!
     \property QActionGroup::exclusive
     \brief whether the action group does exclusive checking

     If exclusive is true, only one checkable action in the action group
     can ever be active at any time. If the user chooses another
     checkable action in the group, the one they chose becomes active and
     the one that was active becomes inactive.

     \sa QAction::checkable
 */
 void QActionGroup::setExclusive(bool b)
 {
     Q_D(QActionGroup);
     d->exclusive = b;
 }

 bool QActionGroup::isExclusive() const
 {
     Q_D(const QActionGroup);
     return d->exclusive;
 }

 /*!
     \fn void QActionGroup::setDisabled(bool b)

     This is a convenience function for the \l enabled property, that
     is useful for signals--slots connections. If \a b is true the
     action group is disabled; otherwise it is enabled.
 */

 /*!
     \property QActionGroup::enabled
     \brief whether the action group is enabled

     Each action in the group will be enabled or disabled unless it
     has been explicitly disabled.

     \sa QAction::setEnabled()
 */
 void QActionGroup::setEnabled(bool b)
 {
     Q_D(QActionGroup);
     d->enabled = b;
     for(QList<QAction*>::const_iterator it = d->actions.constBegin(); it != d->actions.constEnd(); ++it) {
         if(!(*it)->d_func()->forceDisabled) {
             (*it)->setEnabled(b);
             (*it)->d_func()->forceDisabled = false;
         }
     }
 }

 bool QActionGroup::isEnabled() const
 {
     Q_D(const QActionGroup);
     return d->enabled;
 }

 /*!
   Returns the currently checked action in the group, or 0 if none
   are checked.
 */
 QAction *QActionGroup::checkedAction() const
 {
     Q_D(const QActionGroup);
     return d->current;
 }

 /*!
     \property QActionGroup::visible
     \brief whether the action group is visible

     Each action in the action group will match the visible state of
     this group unless it has been explicitly hidden.

     \sa QAction::setEnabled()
 */
 void QActionGroup::setVisible(bool b)
 {
     Q_D(QActionGroup);
     d->visible = b;
     for(QList<QAction*>::Iterator it = d->actions.begin(); it != d->actions.end(); ++it) {
         if(!(*it)->d_func()->forceInvisible) {
             (*it)->setVisible(b);
             (*it)->d_func()->forceInvisible = false;
         }
     }
 }

 bool QActionGroup::isVisible() const
 {
     Q_D(const QActionGroup);
     return d->visible;
 }

 /*!
     \fn void QActionGroup::triggered(QAction *action)

     This signal is emitted when the given \a action in the action
     group is activated by the user; for example, when the user clicks
     a menu option, toolbar button, or presses an action's shortcut key
     combination.

     Connect to this signal for command actions.

     \sa QAction::activate()
 */

 /*!
     \fn void QActionGroup::hovered(QAction *action)

     This signal is emitted when the given \a action in the action
     group is highlighted by the user; for example, when the user
     pauses with the cursor over a menu option, toolbar button, or
     presses an action's shortcut key combination.

     \sa QAction::activate()
 */

 /*!
     \fn void QActionGroup::add(QAction* a)

     Use addAction() instead.
 */

 /*!
     \fn void QActionGroup::addSeparator()

     Normally you add a separator to the menus or widgets to which
     actions are added, so this function is very rarely needed.

     \oldcode
     actionGroup->addSeparator();
     \newcode
     QAction *separator = new QAction(this);
     separator->setSeparator(true);
     actionGroup->addAction(separator);
     \endcode
 */

 /*!
     \fn bool QActionGroup::addTo(QWidget *widget)

     \oldcode
     actionGroup->addTo(widget);
     \newcode
     widget->addActions(actionGroup->actions());
     \endcode
 */

 /*!
     \fn void QActionGroup::selected(QAction *action);

     Use triggered() instead.

 */

 QT_END_NAMESPACE

 #include "moc_qactiongroup.cpp"

 #endif // QT_NO_ACTION
	/****************************************************************************
	**
	** Copyright (C) 2011 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.
	**
	** $QT_BEGIN_LICENSE:LGPL$
	** GNU Lesser General Public License Usage
	** 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.
	**
	** 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.
	**
	** Other Usage
	** Alternatively, this file may be used in accordance with the terms and
	** conditions contained in a signed written agreement between you and Nokia.
	**
	**
	**
	**
	**
	** $QT_END_LICENSE$
	**
	****************************************************************************/

	#include "qactiongroup.h"

	#ifndef QT_NO_ACTION

	#include "qaction_p.h"
	#include "qapplication.h"
	#include "qevent.h"
	#include "qlist.h"

	QT_BEGIN_NAMESPACE

	class QActionGroupPrivate : public QObjectPrivate
	{
	Q_DECLARE_PUBLIC(QActionGroup)
	public:
	QActionGroupPrivate() : exclusive(1), enabled(1), visible(1) { }
	QList<QAction *> actions;
	QPointer<QAction> current;
	uint exclusive : 1;
	uint enabled : 1;
	uint visible : 1;

	private:
	void _q_actionTriggered(); //private slot
	void _q_actionChanged(); //private slot
	void _q_actionHovered(); //private slot
	};

	void QActionGroupPrivate::_q_actionChanged()
	{
	Q_Q(QActionGroup);
	QAction action = qobject_cast<QAction>(q->sender());
	Q_ASSERT_X(action != 0, "QWidgetGroup::_q_actionChanged", "internal error");
	if(exclusive) {
	if (action->isChecked()) {
	if (action != current) {
	if(current)
	current->setChecked(false);
	current = action;
	}
	} else if (action == current) {
	current = 0;
	}
	}
	}

	void QActionGroupPrivate::_q_actionTriggered()
	{
	Q_Q(QActionGroup);
	QAction action = qobject_cast<QAction>(q->sender());
	Q_ASSERT_X(action != 0, "QWidgetGroup::_q_actionTriggered", "internal error");
	emit q->triggered(action);
	emit q->selected(action);
	}

	void QActionGroupPrivate::_q_actionHovered()
	{
	Q_Q(QActionGroup);
	QAction action = qobject_cast<QAction>(q->sender());
	Q_ASSERT_X(action != 0, "QWidgetGroup::_q_actionHovered", "internal error");
	emit q->hovered(action);
	}

	/*!
	\class QActionGroup
	\brief The QActionGroup class groups actions together.

	\ingroup mainwindow-classes

	In some situations it is useful to group actions together. For
	example, if you have a \gui{Left Align} action, a \gui{Right
	Align} action, a \gui{Justify} action, and a \gui{Center} action,
	only one of these actions should be active at any one time. One
	simple way of achieving this is to group the actions together in
	an action group.

	Here's a example (from the \l{mainwindows/menus}{Menus} example):

	\snippet examples/mainwindows/menus/mainwindow.cpp 6

	Here we create a new action group. Since the action group is
	exclusive by default, only one of the actions in the group is
	checked at any one time.

	\img qactiongroup-align.png Alignment options in a QMenu

	A QActionGroup emits an triggered() signal when one of its
	actions is chosen. Each action in an action group emits its
	triggered() signal as usual.

	As stated above, an action group is \l exclusive by default; it
	ensures that only one checkable action is active at any one time.
	If you want to group checkable actions without making them
	exclusive, you can turn of exclusiveness by calling
	setExclusive(false).

	Actions can be added to an action group using addAction(), but it
	is usually more convenient to specify a group when creating
	actions; this ensures that actions are automatically created with
	a parent. Actions can be visually separated from each other by
	adding a separator action to the group; create an action and use
	QAction's \l {QAction::}{setSeparator()} function to make it
	considered a separator. Action groups are added to widgets with
	the QWidget::addActions() function.

	\sa QAction
	*/

	/*!
	Constructs an action group for the \a parent object.

	The action group is exclusive by default. Call setExclusive(false)
	to make the action group non-exclusive.
	*/
	QActionGroup::QActionGroup(QObject* parent) : QObject(*new QActionGroupPrivate, parent)
	{
	}

	/*!
	Destroys the action group.
	*/
	QActionGroup::~QActionGroup()
	{
	}

	/*!
	\fn QAction QActionGroup::addAction(QAction action)

	Adds the \a action to this group, and returns it.

	Normally an action is added to a group by creating it with the
	group as its parent, so this function is not usually used.

	\sa QAction::setActionGroup()
	*/
	QAction QActionGroup::addAction(QAction a)
	{
	Q_D(QActionGroup);
	if(!d->actions.contains(a)) {
	d->actions.append(a);
	QObject::connect(a, SIGNAL(triggered()), this, SLOT(_q_actionTriggered()));
	QObject::connect(a, SIGNAL(changed()), this, SLOT(_q_actionChanged()));
	QObject::connect(a, SIGNAL(hovered()), this, SLOT(_q_actionHovered()));
	}
	if(!a->d_func()->forceDisabled) {
	a->setEnabled(d->enabled);
	a->d_func()->forceDisabled = false;
	}
	if(!a->d_func()->forceInvisible) {
	a->setVisible(d->visible);
	a->d_func()->forceInvisible = false;
	}
	if(a->isChecked())
	d->current = a;
	QActionGroup *oldGroup = a->d_func()->group;
	if(oldGroup != this) {
	if (oldGroup)
	oldGroup->removeAction(a);
	a->d_func()->group = this;
	}
	return a;
	}

	/*!
	Creates and returns an action with \a text. The newly created
	action is a child of this action group.

	Normally an action is added to a group by creating it with the
	group as parent, so this function is not usually used.

	\sa QAction::setActionGroup()
	*/
	QAction *QActionGroup::addAction(const QString &text)
	{
	return new QAction(text, this);
	}

	/*!
	Creates and returns an action with \a text and an \a icon. The
	newly created action is a child of this action group.

	Normally an action is added to a group by creating it with the
	group as its parent, so this function is not usually used.

	\sa QAction::setActionGroup()
	*/
	QAction *QActionGroup::addAction(const QIcon &icon, const QString &text)
	{
	return new QAction(icon, text, this);
	}

	/*!
	Removes the \a action from this group. The action will have no
	parent as a result.

	\sa QAction::setActionGroup()
	*/
	void QActionGroup::removeAction(QAction *action)
	{
	Q_D(QActionGroup);
	if (d->actions.removeAll(action)) {
	if (action == d->current)
	d->current = 0;
	QObject::disconnect(action, SIGNAL(triggered()), this, SLOT(_q_actionTriggered()));
	QObject::disconnect(action, SIGNAL(changed()), this, SLOT(_q_actionChanged()));
	QObject::disconnect(action, SIGNAL(hovered()), this, SLOT(_q_actionHovered()));
	action->d_func()->group = 0;
	}
	}

	/*!
	Returns the list of this groups's actions. This may be empty.
	*/
	QList<QAction*> QActionGroup::actions() const
	{
	Q_D(const QActionGroup);
	return d->actions;
	}

	/*!
	\property QActionGroup::exclusive
	\brief whether the action group does exclusive checking

	If exclusive is true, only one checkable action in the action group
	can ever be active at any time. If the user chooses another
	checkable action in the group, the one they chose becomes active and
	the one that was active becomes inactive.

	\sa QAction::checkable
	*/
	void QActionGroup::setExclusive(bool b)
	{
	Q_D(QActionGroup);
	d->exclusive = b;
	}

	bool QActionGroup::isExclusive() const
	{
	Q_D(const QActionGroup);
	return d->exclusive;
	}

	/*!
	\fn void QActionGroup::setDisabled(bool b)

	This is a convenience function for the \l enabled property, that
	is useful for signals--slots connections. If \a b is true the
	action group is disabled; otherwise it is enabled.
	*/

	/*!
	\property QActionGroup::enabled
	\brief whether the action group is enabled

	Each action in the group will be enabled or disabled unless it
	has been explicitly disabled.

	\sa QAction::setEnabled()
	*/
	void QActionGroup::setEnabled(bool b)
	{
	Q_D(QActionGroup);
	d->enabled = b;
	for(QList<QAction*>::const_iterator it = d->actions.constBegin(); it != d->actions.constEnd(); ++it) {
	if(!(*it)->d_func()->forceDisabled) {
	(*it)->setEnabled(b);
	(*it)->d_func()->forceDisabled = false;
	}
	}
	}

	bool QActionGroup::isEnabled() const
	{
	Q_D(const QActionGroup);
	return d->enabled;
	}

	/*!
	Returns the currently checked action in the group, or 0 if none
	are checked.
	*/
	QAction *QActionGroup::checkedAction() const
	{
	Q_D(const QActionGroup);
	return d->current;
	}

	/*!
	\property QActionGroup::visible
	\brief whether the action group is visible

	Each action in the action group will match the visible state of
	this group unless it has been explicitly hidden.

	\sa QAction::setEnabled()
	*/
	void QActionGroup::setVisible(bool b)
	{
	Q_D(QActionGroup);
	d->visible = b;
	for(QList<QAction*>::Iterator it = d->actions.begin(); it != d->actions.end(); ++it) {
	if(!(*it)->d_func()->forceInvisible) {
	(*it)->setVisible(b);
	(*it)->d_func()->forceInvisible = false;
	}
	}
	}

	bool QActionGroup::isVisible() const
	{
	Q_D(const QActionGroup);
	return d->visible;
	}

	/*!
	\fn void QActionGroup::triggered(QAction *action)

	This signal is emitted when the given \a action in the action
	group is activated by the user; for example, when the user clicks
	a menu option, toolbar button, or presses an action's shortcut key
	combination.

	Connect to this signal for command actions.

	\sa QAction::activate()
	*/

	/*!
	\fn void QActionGroup::hovered(QAction *action)

	This signal is emitted when the given \a action in the action
	group is highlighted by the user; for example, when the user
	pauses with the cursor over a menu option, toolbar button, or
	presses an action's shortcut key combination.

	\sa QAction::activate()
	*/

	/*!
	\fn void QActionGroup::add(QAction* a)

	Use addAction() instead.
	*/

	/*!
	\fn void QActionGroup::addSeparator()

	Normally you add a separator to the menus or widgets to which
	actions are added, so this function is very rarely needed.

	\oldcode
	actionGroup->addSeparator();
	\newcode
	QAction *separator = new QAction(this);
	separator->setSeparator(true);
	actionGroup->addAction(separator);
	\endcode
	*/

	/*!
	\fn bool QActionGroup::addTo(QWidget *widget)

	\oldcode
	actionGroup->addTo(widget);
	\newcode
	widget->addActions(actionGroup->actions());
	\endcode
	*/

	/*!
	\fn void QActionGroup::selected(QAction *action);

	Use triggered() instead.

	*/

	QT_END_NAMESPACE

	#include "moc_qactiongroup.cpp"

	#endif // QT_NO_ACTION