okular/core/documentcommands_p.h

/***************************************************************************
 *   Copyright (C) 2013 Jon Mease <jon.mease@gmail.com>                    *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 ***************************************************************************/

#ifndef _OKULAR_DOCUMENT_COMMANDS_P_H_
#define _OKULAR_DOCUMENT_COMMANDS_P_H_

#include <QtGui/QUndoCommand>
#include <QDomNode>

#include "area.h"

namespace Okular {

class Annotation;
class DocumentPrivate;

class AddAnnotationCommand : public QUndoCommand
{
    public:
        AddAnnotationCommand(Okular::DocumentPrivate * docPriv,  Okular::Annotation* annotation, int pageNumber);

        virtual ~AddAnnotationCommand();

        virtual void undo();

        virtual void redo();

    private:
        Okular::DocumentPrivate * m_docPriv;
        Okular::Annotation* m_annotation;
        int m_pageNumber;
        bool m_done;
};

class RemoveAnnotationCommand : public QUndoCommand
{
    public:
        RemoveAnnotationCommand(Okular::DocumentPrivate * doc,  Okular::Annotation* annotation, int pageNumber);
        virtual ~RemoveAnnotationCommand();
        virtual void undo();
        virtual void redo();

    private:
        Okular::DocumentPrivate * m_doc;
        Okular::Annotation* m_annotation;
        int m_pageNumber;
        bool m_done;
};

class ModifyAnnotationPropertiesCommand : public QUndoCommand
{
    public:
        ModifyAnnotationPropertiesCommand( Okular::DocumentPrivate* docPriv,  Okular::Annotation*  annotation,
                                                                  int pageNumber,
                                                                  QDomNode oldProperties,
                                                                  QDomNode newProperties );

        virtual void undo();
        virtual void redo();

    private:
        Okular::DocumentPrivate * m_docPriv;
        Okular::Annotation* m_annotation;
        int m_pageNumber;
        QDomNode m_prevProperties;
        QDomNode m_newProperties;
};

class TranslateAnnotationCommand : public QUndoCommand
{
    public:
        TranslateAnnotationCommand(Okular::DocumentPrivate* docPriv,
                                   Okular::Annotation*  annotation,
                                   int pageNumber,
                                   const Okular::NormalizedPoint & delta,
                                   bool completeDrag
                                  );
        virtual void undo();
        virtual void redo();
        virtual int id() const;
        virtual bool mergeWith(const QUndoCommand *uc);
        Okular::NormalizedPoint minusDelta();

    private:
        Okular::DocumentPrivate * m_docPriv;
        Okular::Annotation* m_annotation;
        int m_pageNumber;
        Okular::NormalizedPoint m_delta;
        bool m_completeDrag;
};

class EditTextCommand : public QUndoCommand
{
    public:
        EditTextCommand( const QString & newContents,
                         int newCursorPos,
                         const QString & prevContents,
                         int prevCursorPos,
                         int prevAnchorPos
                       );

        virtual void undo() = 0;
        virtual void redo() = 0;
        virtual int id() const = 0;
        virtual bool mergeWith(const QUndoCommand *uc);

    private:
        enum EditType {
            CharBackspace,      ///< Edit made up of one or more single character backspace operations
            CharDelete,         ///< Edit made up of one or more single character delete operations
            CharInsert,         ///< Edit made up of one or more single character insertion operations
            OtherEdit           ///< All other edit operations (these will not be merged together)
        };

        QString oldContentsLeftOfCursor();
        QString newContentsLeftOfCursor();
        QString oldContentsRightOfCursor();
        QString newContentsRightOfCursor();

    protected:
        QString m_newContents;
        int m_newCursorPos;
        QString m_prevContents;
        int m_prevCursorPos;
        int m_prevAnchorPos;
        EditType m_editType;
};


class EditAnnotationContentsCommand : public EditTextCommand
{
    public:
        EditAnnotationContentsCommand(Okular::DocumentPrivate* docPriv,
                                      Okular::Annotation*  annotation,
                                      int pageNumber,
                                      const QString & newContents,
                                      int newCursorPos,
                                      const QString & prevContents,
                                      int prevCursorPos,
                                      int prevAnchorPos
                                     );

        virtual void undo();
        virtual void redo();
        virtual int id() const;
        virtual bool mergeWith(const QUndoCommand *uc);

    private:
        Okular::DocumentPrivate * m_docPriv;
        Okular::Annotation* m_annotation;
        int m_pageNumber;
};

}

#endif

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