/*
===========================================================================
Copyright (C) 2015 the OpenMoHAA team

This file is part of OpenMoHAA source code.

OpenMoHAA source code is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.

OpenMoHAA source code 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 General Public License for more details.

You should have received a copy of the GNU General Public License
along with OpenMoHAA source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/

#pragma once

typedef struct selectionpoint_s {
    int line;
    int column;
} selectionpoint_t;

typedef struct selection_s {
    selectionpoint_s begin;
    selectionpoint_s end;
} selection_t;

typedef struct dragState_s {
    UIPoint2D lastPos;
} dragState_t;

class UIMultiLineEdit : public UIWidget
{
protected:
    selection_s   m_selection;
    dragState_s   m_dragState;
    UList<str>    m_lines;
    UIVertScroll *m_vertscroll;
    mouseState_t  m_mouseState;
    bool          m_shiftForcedDown;
    bool          m_edit;
    bool          m_changed;

public:
    CLASS_PROTOTYPE(UIMultiLineEdit);

protected:
    void FrameInitialized(void) override;
    void PointToSelectionPoint(const UIPoint2D& p, selectionpoint_t& sel);
    str& LineFromLineNumber(int num, bool resetpos);
    void EnsureSelectionPointVisible(selectionpoint_t& point);
    void BoundSelectionPoint(selectionpoint_t& point);
    void SortSelection(selectionpoint_t **topsel, selectionpoint_t **botsel);
    void UpdateCvarEvent(Event *ev);
    void SetEdit(Event *ev);
    bool IsSelectionEmpty(void);

public:
    UIMultiLineEdit();

    void      Draw(void) override;
    qboolean  KeyEvent(int key, unsigned int time) override;
    void      CharEvent(int ch) override;
    UIPoint2D getEndSelPoint(void);
    void      MouseDown(Event *ev);
    void      MouseUp(Event *ev);
    void      MouseDragged(Event *ev);
    void      Scroll(Event *ev);
    void      DragTimer(Event *ev);
    void      SizeChanged(Event *ev);
    void      setData(const char *data);
    void      getData(str& data);
    void      Empty(void);
    void      CopySelection(void);
    void      PasteSelection(void);
    void      DeleteSelection(void);
    void      setChanged(bool b);
    bool      IsChanged(void);
};