/*
 * Copyright 2013, Stephan Aßmus <superstippi@gmx.de>.
 * All rights reserved. Distributed under the terms of the MIT License.
 */
#ifndef TEXT_SPAN_H
#define TEXT_SPAN_H


#include <Cursor.h>
#include <String.h>

#include "CharacterStyle.h"


class TextSpan {
public:
                                                                TextSpan();
                                                                TextSpan(const BString& text,
                                                                        const CharacterStyle& style);
                                                                TextSpan(const TextSpan& other);

                        TextSpan&                       operator=(const TextSpan& other);
                        bool                            operator==(const TextSpan& other) const;
                        bool                            operator!=(const TextSpan& other) const;

                        void                            SetText(const BString& text);
        inline  const BString&          Text() const
                                                                        { return fText; }

                        void                            SetStyle(const CharacterStyle& style);
        inline  const CharacterStyle& Style() const
                                                                        { return fStyle; }

        inline  int32                           CountChars() const
                                                                        { return fCharCount; }

                        bool                            Append(const BString& text);
                        bool                            Insert(int32 offset, const BString& text);
                        bool                            Remove(int32 start, int32 count);

                        TextSpan                        SubSpan(int32 start, int32 count) const;

                        void                            SetCursor(const BCursor& cursor);
        inline  const BCursor&          Cursor() const
                                                                        { return fCursor; }
                        void                            SetClickMessage(BMessage* message);
        inline  const BMessage*         ClickMessage() const
                                                                        { return &fClickMessage; }
private:
                        void                            _TruncateInsert(int32& start) const;
                        void                            _TruncateRemove(int32& start,
                                                                        int32& count) const;

private:
                        BString                         fText;
                        int32                           fCharCount;
                        CharacterStyle          fStyle;

                        BCursor                         fCursor;
                        BMessage                        fClickMessage;
};


#endif // TEXT_SPAN_H