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** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
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** This file is part of Qt Creator.
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#ifndef DIFFUTILS_H
#define DIFFUTILS_H

#include <QString>
#include <QMap>
#include <QTextEdit>

#include "diffeditorcontroller.h"
#include "texteditor/texteditorconstants.h"

namespace TextEditor { class FontSettings; }

namespace DiffEditor {

class Diff;

namespace Internal {

class TextLineData {
public:
    enum TextLineType {
        TextLine,
        Separator,
        Invalid
    };
    TextLineData() : textLineType(Invalid) {}
    TextLineData(const QString &txt) : textLineType(TextLine), text(txt) {}
    TextLineData(TextLineType t) : textLineType(t) {}
    TextLineType textLineType;
    QString text;
};

class RowData {
public:
    RowData() : equal(false) {}
    RowData(const TextLineData &l)
        : leftLine(l), rightLine(l), equal(true) {}
    RowData(const TextLineData &l, const TextLineData &r)
        : leftLine(l), rightLine(r), equal(false) {}
    TextLineData leftLine;
    TextLineData rightLine;
    bool equal;
};

class ChunkData {
public:
    ChunkData() : contextChunk(false) {}
    QList<RowData> rows;
    bool contextChunk;
    // start position, end position, TextLineData::Separator lines not taken into account
    QMap<int, int> changedLeftPositions; // counting from the beginning of the chunk
    QMap<int, int> changedRightPositions; // counting from the beginning of the chunk
};

class FileData {
public:
    FileData() {}
    FileData(const ChunkData &chunkData) { chunks.append(chunkData); }
    QList<ChunkData> chunks;
    DiffEditorController::DiffFileInfo leftFileInfo;
    DiffEditorController::DiffFileInfo rightFileInfo;
};

ChunkData calculateOriginalData(const QList<Diff> &leftDiffList,
                                const QList<Diff> &rightDiffList);
FileData calculateContextData(const ChunkData &originalData,
                              int contextLinesNumber);
QList<QTextEdit::ExtraSelection> colorPositions(const QTextCharFormat &format,
        QTextCursor &cursor,
        const QMap<int, int> &positions);
QTextCharFormat fullWidthFormatForTextStyle(const TextEditor::FontSettings &fontSettings,
                                            TextEditor::TextStyle textStyle);
} // namespace Internal
} // namespace DiffEditor

#endif // DIFFUTILS_H