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editable.h

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2005 The ScummVM project
 *
 * This program 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.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * $Header: /cvsroot/scummvm/scummvm/gui/editable.h,v 1.6.2.1 2005/10/18 02:11:18 sev Exp $
 */

#ifndef GUI_EDITABLE_H
#define GUI_EDITABLE_H

#include "common/str.h"
#include "common/rect.h"
#include "gui/widget.h"

namespace GUI {

/**
 * Base class for widgets which need to edit text, like ListWidget and
 * EditTextWidget.
 */
00034 class EditableWidget : public Widget {
public:
      typedef Common::String String;
protected:
      String            _editString;

      bool        _caretVisible;
      uint32            _caretTime;
      int               _caretPos;

      bool        _caretInverse;

      int               _editScrollOffset;

public:
      EditableWidget(GuiObject *boss, int x, int y, int w, int h, WidgetSize ws = kNormalWidgetSize);
      virtual ~EditableWidget();

      virtual void setEditString(const String &str);
      virtual const String &getEditString() const           { return _editString; }

      virtual void handleTickle();
      virtual bool handleKeyDown(uint16 ascii, int keycode, int modifiers);

protected:
      virtual void startEditMode() = 0;
      virtual void endEditMode() = 0;
      virtual void abortEditMode() = 0;

      virtual Common::Rect getEditRect() const = 0;
      virtual int getCaretOffset() const;
      void drawCaret(bool erase);
      bool setCaretPos(int newPos);
      bool adjustOffset();

      virtual bool tryInsertChar(char c, int pos);
};

} // End of namespace GUI

#endif

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