kundo2stack.h

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/*
 *  SPDX-FileCopyrightText: 2014 Dmitry Kazakov <dimula73@gmail.com>
 *  SPDX-FileCopyrightText: 2014 Mohit Goyal <mohit.bits2011@gmail.com>
 *
 *  SPDX-License-Identifier: LGPL-2.1-or-later
 */
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#ifndef KUNDO2STACK_H
#define KUNDO2STACK_H
 
#include <QObject>
#include <QString>
#include <QList>
#include <QAction>
#include <QTime>
#include <QVector>
 
 
#include "kritacommand_export.h"
 
class QAction;
class KUndo2CommandPrivate;
class KUndo2Group;
class KisKActionCollection;
 
#ifndef QT_NO_UNDOCOMMAND
 
#include "kundo2magicstring.h"
#include "kundo2commandextradata.h"
#include "KisCumulativeUndoData.h"
 
 
class KRITACOMMAND_EXPORT KUndo2Command
{
    KUndo2CommandPrivate *d {0};
 
public:
    explicit KUndo2Command(KUndo2Command *parent = 0);
    explicit KUndo2Command(const KUndo2MagicString &text, KUndo2Command *parent = 0);
    virtual ~KUndo2Command();
 
    virtual void undo();
    virtual void redo();
 
    QString actionText() const;
    KUndo2MagicString text() const;
    void setText(const KUndo2MagicString &text);
 
    virtual int id() const;
    virtual int timedId() const;
    virtual void setTimedID(int timedID);
    virtual bool mergeWith(const KUndo2Command *other);
    virtual bool timedMergeWith(KUndo2Command *other);
 
    virtual bool canAnnihilateWith(const KUndo2Command *other) const;
 
    int childCount() const;
    const KUndo2Command *child(int index) const;
 
    bool hasParent() const;
    void setTime();
    virtual void setTime(const QTime &time);
    virtual QTime time() const;
    void setEndTime();
    virtual void setEndTime(const QTime &time);
    virtual QTime endTime() const;
 
    virtual QVector<KUndo2Command*> mergeCommandsVector() const;
    virtual bool isMerged() const;
    virtual void undoMergedCommands();
    virtual void redoMergedCommands();
 
    KUndo2CommandExtraData* extraData() const;
 
    void setExtraData(KUndo2CommandExtraData *data);
 
private:
    Q_DISABLE_COPY(KUndo2Command)
    friend class KUndo2QStack;
 
 
    bool m_hasParent {false};
    int m_timedID {-1};
 
    QTime m_timeOfCreation;
    QTime m_endOfCommand;
    QVector<KUndo2Command*> m_mergeCommandsVector;
};
 
#endif // QT_NO_UNDOCOMMAND
 
#ifndef QT_NO_UNDOSTACK
 
class KRITACOMMAND_EXPORT KUndo2QStack : public QObject
{
    Q_OBJECT
//    Q_DECLARE_PRIVATE(KUndo2QStack)
    Q_PROPERTY(bool active READ isActive WRITE setActive)
    Q_PROPERTY(int undoLimit READ undoLimit WRITE setUndoLimit)
 
public:
    explicit KUndo2QStack(QObject *parent = 0);
    ~KUndo2QStack() override;
    void clear();
 
    void push(KUndo2Command *cmd);
 
    bool canUndo() const;
    bool canRedo() const;
    QString undoText() const;
    QString redoText() const;
 
    int count() const;
    int index() const;
    QString actionText(int idx) const;
    QString text(int idx) const;
 
#ifndef QT_NO_ACTION
    QAction *createUndoAction(QObject *parent) const;
    QAction *createRedoAction(QObject *parent) const;
#endif // QT_NO_ACTION
 
    bool isActive() const;
    bool isClean() const;
    int cleanIndex() const;
 
    void beginMacro(const KUndo2MagicString &text);
    void endMacro();
 
    void setUndoLimit(int limit);
    int undoLimit() const;
 
    const KUndo2Command *command(int index) const;
 
    void setUseCumulativeUndoRedo(bool value);
    bool useCumulativeUndoRedo() const;
 
    void setCumulativeUndoData(const KisCumulativeUndoData &data);
    KisCumulativeUndoData cumulativeUndoData();
 
public Q_SLOTS:
    void setClean();
    virtual void setIndex(int idx);
    virtual void undo();
    virtual void redo();
    void setActive(bool active = true);
 
    void purgeRedoState();
 
Q_SIGNALS:
    void indexChanged(int idx);
    void cleanChanged(bool clean);
    void canUndoChanged(bool canUndo);
    void canRedoChanged(bool canRedo);
    void undoTextChanged(const QString &undoActionText);
    void redoTextChanged(const QString &redoActionText);
 
protected:
    virtual void notifySetIndexChangedOneCommand();
 
private:
    // from QUndoStackPrivate
    QList<KUndo2Command*> m_command_list;
    QList<KUndo2Command*> m_macro_stack;
    int m_index;
    int m_clean_index;
    KUndo2Group *m_group;
    int m_undo_limit;
    bool m_useCumulativeUndoRedo;
    KisCumulativeUndoData m_cumulativeUndoData;
 
    // also from QUndoStackPrivate
    void setIndex(int idx, bool clean);
    bool checkUndoLimit();
 
    Q_DISABLE_COPY(KUndo2QStack)
    friend class KUndo2Group;
};
 
class KRITACOMMAND_EXPORT KUndo2Stack : public KUndo2QStack
{
public:
    explicit KUndo2Stack(QObject *parent = 0);
 
    // functions from KUndoStack
    QAction* createRedoAction(KisKActionCollection* actionCollection, const QString& actionName = QString());
    QAction* createUndoAction(KisKActionCollection* actionCollection, const QString& actionName = QString());
};
 
#endif // QT_NO_UNDOSTACK
 
#endif // KUNDO2STACK_H