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/*
   Copyright (C) 2015-2017 Laurent Montel <montel@kde.org>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library 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 KPIMTEXTEDITRICHTEXTCOMPOSEREMAILQUOTEHIGHLIGHTER_H
#define KPIMTEXTEDITRICHTEXTCOMPOSEREMAILQUOTEHIGHLIGHTER_H

#include <sonnet/highlighter.h>
#include "kpimtextedit_export.h"
namespace KPIMTextEdit {
class RichTextComposer;
class KPIMTEXTEDIT_EXPORT RichTextComposerEmailQuoteHighlighter : public Sonnet::Highlighter
{
    Q_OBJECT
public:

    /**
     * Constructor. See setQuoteColor() for the parameters.
     * FIXME: Default colors don't obey color scheme
     */
    explicit RichTextComposerEmailQuoteHighlighter(RichTextComposer *textEdit, const QColor &normalColor = Qt::black, const QColor &quoteDepth1 = QColor(0x00, 0x80, 0x00),
                                                   const QColor &quoteDepth2 = QColor(0x00, 0x80, 0x00), const QColor &quoteDepth3 = QColor(0x00, 0x80, 0x00), const QColor &misspelledColor = Qt::red);

    ~RichTextComposerEmailQuoteHighlighter();

    /**
     * Sets the colors used for highlighting quoted text and spelling mistakes.
     *
     * @param quoteDepth1 color for text quoted 1 level deep
     * @param quoteDepth2 color for text quoted 2 level deep
     * @param quoteDepth3 color for text quoted 3 level deep
     * @param misspelledColor color in which misspelled words will be underlined
     * @param normalColor will be ignored, only provided for KNode
     *                    compatibility.
     */
    void setQuoteColor(const QColor &normalColor, const QColor &quoteDepth1, const QColor &quoteDepth2, const QColor &quoteDepth3, const QColor &misspelledColor = Qt::red);

    /**
     * Turns spellcheck highlighting on or off.
     *
     * @param on if true, spelling mistakes will be highlighted
     */
    void toggleSpellHighlighting(bool on);

    /**
     * Reimplemented to highlight quote blocks.
     */
    void highlightBlock(const QString &text) override;
protected:

    /**
     * Reimplemented, the base version sets the text color to black, which
     * is not what we want. We do nothing, the format is already reset by
     * Qt.
     * @param start the beginning of text
     * @param count the amount of characters to set
     */
    void unsetMisspelled(int start, int count) override;

    /**
     * Reimplemented to set the color of the misspelled word to a color
     * defined by setQuoteColor().
     */
    void setMisspelled(int start, int count) override;

private:
    class RichTextComposerEmailQuoteHighlighterPrivate;
    RichTextComposerEmailQuoteHighlighterPrivate *const d;
};
}

#endif // RICHTEXTCOMPOSEREMAILQUOTEHIGHLIGHTER_H