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// Copyright (C) 2020 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
// Qt-Security score:significant reason:default
#ifndef QUNDOSTACK_P_H
#define QUNDOSTACK_P_H
#include <QtGui/private/qtguiglobal_p.h>
#include <private/qobject_p.h>
#include <QtCore/qlist.h>
#include <QtCore/qstring.h>
#if QT_CONFIG(action)
# include <QtGui/qaction.h>
#endif
#include "qundostack.h"
QT_BEGIN_NAMESPACE
class QUndoCommand;
class QUndoGroup;
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
class QUndoCommandPrivate
{
public:
QUndoCommandPrivate() : id(-1), obsolete(false) {}
QList<QUndoCommand*> child_list;
QString text;
QString actionText;
int id;
bool obsolete;
};
#if QT_CONFIG(undostack)
class QUndoStackPrivate : public QObjectPrivate
{
Q_DECLARE_PUBLIC(QUndoStack)
public:
QUndoStackPrivate() : index(0), clean_index(0), group(nullptr), undo_limit(0) {}
/*!
* \internal
* \brief Holds the presentation state for an Undo or Redo command.
* This structure serves a change-detection purpose.
*/
struct ActionState
{
bool enabled = false;
QString text;
friend bool operator==(const ActionState &lhs, const ActionState &rhs) noexcept
#ifdef __cpp_impl_three_way_comparison
= default;
#else
{ return lhs.enabled == rhs.enabled && lhs.text == rhs.text; }
friend bool operator!=(const ActionState &lhs, const ActionState &rhs) noexcept
{ return !(lhs == rhs); }
#endif
// some compiler's reject seed = 0) = delete, overload instead:
friend void qHash(const ActionState &key, size_t seed) = delete;
friend void qHash(const ActionState &key) = delete;
};
QList<QUndoCommand*> command_list;
QList<QUndoCommand*> macro_stack;
int index;
int clean_index;
QUndoGroup *group;
int undo_limit;
ActionState undoActionState;
ActionState redoActionState;
void setIndex(int idx, bool clean);
bool checkUndoLimit();
#ifndef QT_NO_ACTION
static void setPrefixedText(QAction *action, const QString &prefix, const QString &defaultText, const QString &text);
#endif
};
QT_END_NAMESPACE
#endif // QT_CONFIG(undostack)
#endif // QUNDOSTACK_P_H
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