/* $Id$ */

/*
 * Copyright (C) 2006 Richard Braun
 * 
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <string>
#include <vector>
#include <gtkmm.h>

#include "mtxentry.h"
#include "mtxwindow.h"
#include "mtxlanguage.h"
#include "mtxexception.h"

using namespace std;

MtxEntry::MtxEntry(MtxLanguage *language, MtxWindow *window)
{
  this->language = language;
  this->window = window;
}

MtxEntry::~MtxEntry()
{
}

bool
MtxEntry::on_key_press_event(GdkEventKey *event)
{
  vector<MtxSymbol>::iterator results_iterator;
  vector<MtxSymbol> results;
  string text;

  switch (event->keyval)
    {
      case GDK_Up:
        history.previousString();
        text = history.getString();
        set_text(text);
        set_position(text.length());
        return true;
      case GDK_Down:
        history.nextString();
        text = history.getString();
        set_text(text);
        set_position(text.length());
        return true;
      case GDK_Return: case GDK_KP_Enter:
        try
          {
            text = get_text();
            window->addText(text + "\n");
            history.addString(text);
            results = language->parse(text);

            for (results_iterator = results.begin();
                 results_iterator != results.end();
                 results_iterator++)
              {
                if (!(*results_iterator).isSpecial())
                  window->addText((*results_iterator).getName() + " = ");

                window->addText((*results_iterator).toString() + "\n");
              }
          }

        catch (MtxException &exception)
          {
            string message;

            message = "error: ";
            window->addText(message + exception.what() + "\n");
          }

        window->addText(MTXWINDOW_PROMPT);
        set_text("");
        return true;
      default:
        return Gtk::Entry::on_key_press_event(event);
    }
}