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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 215 insertions, 0 deletions

diff --git a/src/corelib/statemachine/qabstractstate.cpp b/src/corelib/statemachine/qabstractstate.cpp
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index 0000000000..9b40695f8e
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+++ b/src/corelib/statemachine/qabstractstate.cpp
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+/****************************************************************************
+**
+** 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 QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qabstractstate.h"
+
+#ifndef QT_NO_STATEMACHINE
+
+#include "qabstractstate_p.h"
+#include "qstate.h"
+#include "qstate_p.h"
+#include "qstatemachine.h"
+#include "qstatemachine_p.h"
+
+QT_BEGIN_NAMESPACE
+
+/*!
+  \class QAbstractState
+
+  \brief The QAbstractState class is the base class of states of a QStateMachine.
+
+  \since 4.6
+  \ingroup statemachine
+
+  The QAbstractState class is the abstract base class of states that are part
+  of a QStateMachine. It defines the interface that all state objects have in
+  common. QAbstractState is part of \l{The State Machine Framework}.
+
+  The entered() signal is emitted when the state has been entered. The
+  exited() signal is emitted when the state has been exited.
+
+  The parentState() function returns the state's parent state. The machine()
+  function returns the state machine that the state is part of.
+
+  \section1 Subclassing
+
+  The onEntry() function is called when the state is entered; reimplement this
+  function to perform custom processing when the state is entered.
+
+  The onExit() function is called when the state is exited; reimplement this
+  function to perform custom processing when the state is exited.
+*/
+
+QAbstractStatePrivate::QAbstractStatePrivate(StateType type)
+    : stateType(type), isMachine(false), parentState(0)
+{
+}
+
+QAbstractStatePrivate *QAbstractStatePrivate::get(QAbstractState *q)
+{
+    return q->d_func();
+}
+
+const QAbstractStatePrivate *QAbstractStatePrivate::get(const QAbstractState *q)
+{
+    return q->d_func();
+}
+
+QStateMachine *QAbstractStatePrivate::machine() const
+{
+    QObject *par = parent;
+    while (par != 0) {
+        if (QStateMachine *mach = qobject_cast<QStateMachine*>(par))
+            return mach;
+        par = par->parent();
+    }
+    return 0;
+}
+
+void QAbstractStatePrivate::callOnEntry(QEvent *e)
+{
+    Q_Q(QAbstractState);
+    q->onEntry(e);
+}
+
+void QAbstractStatePrivate::callOnExit(QEvent *e)
+{
+    Q_Q(QAbstractState);
+    q->onExit(e);
+}
+
+void QAbstractStatePrivate::emitEntered()
+{
+    Q_Q(QAbstractState);
+    emit q->entered();
+}
+
+void QAbstractStatePrivate::emitExited()
+{
+    Q_Q(QAbstractState);
+    emit q->exited();
+}
+
+/*!
+  Constructs a new state with the given \a parent state.
+*/
+QAbstractState::QAbstractState(QState *parent)
+    : QObject(*new QAbstractStatePrivate(QAbstractStatePrivate::AbstractState), parent)
+{
+}
+
+/*!
+  \internal
+*/
+QAbstractState::QAbstractState(QAbstractStatePrivate &dd, QState *parent)
+    : QObject(dd, parent)
+{
+}
+
+/*!
+  Destroys this state.
+*/
+QAbstractState::~QAbstractState()
+{
+}
+
+/*!
+  Returns this state's parent state, or 0 if the state has no parent state.
+*/
+QState *QAbstractState::parentState() const
+{
+    Q_D(const QAbstractState);
+    if (d->parentState != parent())
+        d->parentState = qobject_cast<QState*>(parent());
+    return d->parentState;
+}
+
+/*!
+  Returns the state machine that this state is part of, or 0 if the state is
+  not part of a state machine.
+*/
+QStateMachine *QAbstractState::machine() const
+{
+    Q_D(const QAbstractState);
+    return d->machine();
+}
+
+/*!
+  \fn QAbstractState::onExit(QEvent *event)
+
+  This function is called when the state is exited. The given \a event is what
+  caused the state to be exited. Reimplement this function to perform custom
+  processing when the state is exited.
+*/
+
+/*!
+  \fn QAbstractState::onEntry(QEvent *event)
+
+  This function is called when the state is entered. The given \a event is
+  what caused the state to be entered. Reimplement this function to perform
+  custom processing when the state is entered.
+*/
+
+/*!
+  \fn QAbstractState::entered()
+
+  This signal is emitted when the state has been entered (after onEntry() has
+  been called).
+*/
+
+/*!
+  \fn QAbstractState::exited()
+
+  This signal is emitted when the state has been exited (after onExit() has
+  been called).
+*/
+
+/*!
+  \reimp
+*/
+bool QAbstractState::event(QEvent *e)
+{
+    return QObject::event(e);
+}
+
+QT_END_NAMESPACE
+
+#endif //QT_NO_STATEMACHINE