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/*
* This source file is part of MyGUI. For the latest info, see http://mygui.info/
* Distributed under the MIT License
* (See accompanying file COPYING.MIT or copy at http://opensource.org/licenses/MIT)
*/
#ifndef MYGUI_TEXT_CHANGE_HISTORY_H_
#define MYGUI_TEXT_CHANGE_HISTORY_H_
#include "MyGUI_Prerequest.h"
#include "MyGUI_Macros.h"
#include "MyGUI_UString.h"
#include <deque>
namespace MyGUI
{
// information about single text change operation
struct TextCommandInfo
{
enum CommandType
{
COMMAND_POSITION,
COMMAND_INSERT,
COMMAND_ERASE
};
// for COMMAND_INSERT and COMMAND_ERASE
TextCommandInfo(const UString::utf32string& _text, size_t _start, CommandType _type) :
text(_text),
type(_type),
start(_start),
undo(ITEM_NONE),
redo(ITEM_NONE),
length(ITEM_NONE)
{
}
// for COMMAND_POSITION
TextCommandInfo(size_t _undo, size_t _redo, size_t _length) :
type(COMMAND_POSITION),
start(ITEM_NONE),
undo(_undo),
redo(_redo),
length(_length)
{
}
// inserted/erased string
UString::utf32string text;
CommandType type;
// text start position
size_t start;
// pseudo position
size_t undo, redo, length;
};
using VectorChangeInfo = std::vector<TextCommandInfo>;
using DequeUndoRedoInfo = std::deque<VectorChangeInfo>;
} // namespace MyGUI
#endif // MYGUI_TEXT_CHANGE_HISTORY_H_
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