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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the UiHelpers playground module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef UIHELPERS_UIUNDOSTACK_H
#define UIHELPERS_UIUNDOSTACK_H
#include "uihelpersglobal.h"
#include <QtCore/qobject.h>
#include <QtCore/qstring.h>
#include <QStringList>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE_UIHELPERS
class UiAction;
class UiUndoCommandPrivate;
class UiUndoStackPrivate;
#ifndef QT_NO_UNDOCOMMAND
class UIHELPERS_EXPORT UiUndoCommand
{
UiUndoCommandPrivate *d;
public:
explicit UiUndoCommand(UiUndoCommand *parent = 0);
explicit UiUndoCommand(const QString &text, UiUndoCommand *parent = 0);
virtual ~UiUndoCommand();
virtual void undo();
virtual void redo();
Q_INVOKABLE QString text() const;
QString actionText() const;
void setText(const QString &text);
virtual int id() const;
virtual bool mergeWith(const UiUndoCommand *other);
int childCount() const;
const UiUndoCommand *child(int index) const;
private:
Q_DISABLE_COPY(UiUndoCommand)
friend class UiUndoStack;
};
#endif // QT_NO_UNDOCOMMAND
#ifndef QT_NO_UNDOSTACK
class UIHELPERS_EXPORT UiUndoStack : public QObject
{
Q_OBJECT
Q_DECLARE_PRIVATE(UiUndoStack)
Q_PROPERTY(bool active READ isActive WRITE setActive)
Q_PROPERTY(int undoLimit READ undoLimit WRITE setUndoLimit)
Q_PROPERTY(QStringList stack READ stack NOTIFY stackChanged)
public:
explicit UiUndoStack(QObject *parent = 0);
~UiUndoStack();
void clear();
void push(UiUndoCommand *cmd);
QStringList stack() const;
bool canUndo() const;
bool canRedo() const;
QString undoText() const;
QString redoText() const;
int count() const;
int index() const;
QString text(int idx) const;
#ifndef QT_NO_ACTION
UiAction *createUndoAction(QObject *parent,
const QString &prefix = QString()) const;
UiAction *createRedoAction(QObject *parent,
const QString &prefix = QString()) const;
#endif // QT_NO_ACTION
bool isActive() const;
bool isClean() const;
int cleanIndex() const;
void beginMacro(const QString &text);
void endMacro();
void setUndoLimit(int limit);
int undoLimit() const;
const UiUndoCommand *command(int index) const;
public Q_SLOTS:
void setClean();
void setIndex(int idx);
void undo();
void redo();
void setActive(bool active = true);
Q_SIGNALS:
void indexChanged(int idx);
void cleanChanged(bool clean);
void canUndoChanged(bool canUndo);
void canRedoChanged(bool canRedo);
void undoTextChanged(const QString &undoText);
void redoTextChanged(const QString &redoText);
void stackChanged();
private:
Q_DISABLE_COPY(UiUndoStack)
friend class UiUndoGroup;
};
#endif // QT_NO_UNDOSTACK
QT_END_NAMESPACE_UIHELPERS
QT_END_HEADER
#endif // UIHELPERS_UIUNDOSTACK_H
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