/*
 * Project: MoleCuilder
 * Description: creates and alters molecular systems
 * Copyright (C)  2014 Frederik Heber. All rights reserved.
 *
 *
 *   This file is part of MoleCuilder.
 *
 *    MoleCuilder 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.
 *
 *    MoleCuilder 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 MoleCuilder.  If not, see <http://www.gnu.org/licenses/>.
 */

/*
 * QtLogBox.cpp
 *
 *  Created on: Jun 19, 2014
 *      Author: heber
 */

// include config.h
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "QtLogBox.hpp"

#include <QMouseEvent>
#include <QTextCursor>

#include "CodePatterns/MemDebug.hpp"

#include "CodePatterns/Log.hpp"

#include "World.hpp"

#ifndef QT_CAPTURES_LOG
#include <sstream>

std::stringstream dummystream("Log capture is not compiled in.");
#endif

QtLogBox::QtLogBox(std::ostream &stream, QWidget * _parent) :
    QPlainTextEdit (_parent),
#ifdef QT_CAPTURES_LOG
    logbuf(stream, this)
#else
  logbuf(dummystream, this)
#endif
{
  // don't edit the log
  setReadOnly(true);
//  setTextFormat(Qt::LogText);

  qRegisterMetaType<QTextCursor>("QTextCursor");
}

QtLogBox::~QtLogBox()
{}

void QtLogBox::mousePressEvent(QMouseEvent *e)
{
  // translate the point under mouse into a cursor
  const QPoint &point = e->pos();
  QTextCursor cursor = cursorForPosition(point);

  // get the word under the pointer
  cursor.select(QTextCursor::WordUnderCursor);
  std::string atomname(cursor.selectedText().toStdString());

  // parse the word and check whether it is an atom name
  atomId_t id = getAtomIdForName(atomname);

  // select atom if id valid
  if (id != (atomId_t)-1) {
    if (!World::getInstance().isAtomSelected(id))
      World::getInstance().selectAtom(id);
    else
      World::getInstance().unselectAtom(id);
  }

  // recast event
  QPlainTextEdit::mousePressEvent(e);
}

atomId_t QtLogBox::getAtomIdForName(const std::string &_name) const
{
  atomId_t id = -1;

  // find out where numbers begin
  std::string::const_iterator iter = _name.begin();
  for (; iter != _name.end(); ++iter) {
    if ((*iter < '0') || (*iter > '9'))
      continue;
    else
      break;
  }
  // translate numbers (correcting for printed numbers starting at 1, not 0)
  if (iter != _name.end()) {
    std::stringstream numbers(std::string(iter, _name.end()));
    numbers >> id;
    id -= 1;
  }

  return id;
}