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/*
* Copyright (c) 2012 C. Boemann <cbo@boemann.dk>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef CHANGESTYLESCOMMAND_H
#define CHANGESTYLESCOMMAND_H
#include <kundo2command.h>
#include <QList>
#include <QSet>
#include <QTextBlockFormat>
#include <QTextCharFormat>
class KoCharacterStyle;
class KoParagraphStyle;
class QTextDocument;
class ChangeStylesCommand : public KUndo2Command
{
public:
ChangeStylesCommand(QTextDocument *qDoc
, const QList<KoCharacterStyle *> &origCharacterStyles
, const QList<KoParagraphStyle *> &origParagraphStyles
, const QSet<int> &changedStyles
, KUndo2Command *parent);
~ChangeStylesCommand() override;
/// redo the command
void redo() override;
/// revert the actions done in redo
void undo() override;
private:
/**
* Helper function for clearing common properties.
*
* Clears properties in @a firstFormat that have the same value in @a secondFormat.
*/
void clearCommonProperties(QTextFormat *firstFormat, const QTextFormat &secondFormat);
private:
struct Memento // documents all change to the textdocument by a single style change
{
QTextDocument *document;
int blockPosition;
int paragraphStyleId;
QTextBlockFormat blockDirectFormat;
QTextBlockFormat blockParentFormat;
QTextCharFormat blockDirectCharFormat;
QTextCharFormat blockParentCharFormat;
QList<QTextCharFormat> fragmentDirectFormats;
QList<QTextCursor> fragmentCursors;
QList<int> fragmentStyleId;
};
QList<Memento *> m_mementos;
private:
QList<KoCharacterStyle *> m_origCharacterStyles;
QList<KoParagraphStyle *> m_origParagraphStyles;
QSet<int> m_changedStyles;
QTextDocument *m_document;
bool m_first;
};
#endif // CHANGESTYLESCOMMAND_H
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