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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the QtGui module of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

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    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

    27 **

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    36 **

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    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #ifndef QUNDOGROUP_H

    43 #define QUNDOGROUP_H

    44 

    45 #include <QtCore/qobject.h>

    46 #include <QtCore/qstring.h>

    47 

    48 QT_BEGIN_HEADER

    49 

    50 QT_BEGIN_NAMESPACE

    51 

    52 class QUndoGroupPrivate;

    53 class QUndoStack;

    54 class QAction;

    55 

    56 QT_MODULE(Gui)

    57 

    58 #ifndef QT_NO_UNDOGROUP

    59 

    60 class Q_GUI_EXPORT QUndoGroup : public QObject

    61 {

    62     Q_OBJECT

    63     Q_DECLARE_PRIVATE(QUndoGroup)

    64 

    65 public:

    66     explicit QUndoGroup(QObject *parent = 0);

    67     ~QUndoGroup();

    68 

    69     void addStack(QUndoStack *stack);

    70     void removeStack(QUndoStack *stack);

    71     QList<QUndoStack*> stacks() const;

    72     QUndoStack *activeStack() const;

    73 

    74 #ifndef QT_NO_ACTION

    75     QAction *createUndoAction(QObject *parent,

    76                                 const QString &prefix = QString()) const;

    77     QAction *createRedoAction(QObject *parent,

    78                                 const QString &prefix = QString()) const;

    79 #endif // QT_NO_ACTION

    80     bool canUndo() const;

    81     bool canRedo() const;

    82     QString undoText() const;

    83     QString redoText() const;

    84     bool isClean() const;

    85 

    86 public Q_SLOTS:

    87     void undo();

    88     void redo();

    89     void setActiveStack(QUndoStack *stack);

    90 

    91 Q_SIGNALS:

    92     void activeStackChanged(QUndoStack *stack);

    93     void indexChanged(int idx);

    94     void cleanChanged(bool clean);

    95     void canUndoChanged(bool canUndo);

    96     void canRedoChanged(bool canRedo);

    97     void undoTextChanged(const QString &undoText);

    98     void redoTextChanged(const QString &redoText);

    99 

   100 private:

   101     Q_DISABLE_COPY(QUndoGroup)

   102 };

   103 

   104 #endif // QT_NO_UNDOGROUP

   105 

   106 QT_END_NAMESPACE

   107 

   108 QT_END_HEADER

   109 

   110 #endif // QUNDOGROUP_H