// *************************************************************************
//
// Copyleft 2004-2007 Bruno PAGES  .
//
// This file is part of the BOUML Uml Toolkit.
//
// 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.
//
// e-mail : bouml@free.fr
// home   : http://bouml.free.fr
//
// *************************************************************************

#ifdef WIN32
#pragma warning (disable: 4150)
#endif

#include <stdio.h>

#include <qlayout.h> 
#include <qpushbutton.h>
#include <qfile.h>
#include <qfileinfo.h>
#include <qlabel.h>

#include "SourceDialog.h"
#include "UmlDesktop.h"
#include "strutil.h"

bool NumberedMultiLineEdit::event(QEvent * e) {
  static int old_l = 0;
  static int old_c = 0;
  
  bool r = MultiLineEdit::event(e);
  int l;
  int c;
  
  getCursorPosition (&l, &c);
  if ((c != old_c) || (l != old_l)) {
    old_c = c;
    old_l = l;
    emit cursorMoved(l, c);
  }

  return r;
}

QSize SourceDialog::previous_size;

SourceDialog::SourceDialog(QString p, bool & flg, unsigned & edn)
    : QDialog(0, 0, FALSE, WDestructiveClose), 
      path(p), edited(flg), edition_number(edn) {
  QFileInfo fi(p);
  
  setCaption(fi.fileName());
  
  QVBoxLayout * vbox = new QVBoxLayout(this);

  e = new NumberedMultiLineEdit(this);
  QFont font = e->font();
  if (! hasCodec())
    font.setFamily("Courier");
  font.setFixedPitch(TRUE);
  e->setFont(font);
  vbox->addWidget(e);
  
  QHBoxLayout * hbox = new QHBoxLayout(vbox);
  hbox->setMargin(5);

  lineColumn = new QLabel(this);
  lineColumn->setFont(font);
  hbox->addWidget(lineColumn);
  connect(e, SIGNAL(cursorMoved(int, int)),
	  this, SLOT(updateCursorPos(int,int)));
  updateCursorPos(0, 0);
  
  QFile f(p);
  unsigned size = fi.size();
  
  if (f.open(IO_ReadOnly)) {
   char * s = new char[size + 1];
    
   if (f.readBlock(s, size) != -1) {
     edited = TRUE;
     edition_number += 1;
     
     s[size] = 0;
     e->setText(s);
   
#if 0
     if ( fi.isWritable()) {
       QPushButton * edit = new QPushButton("&Edit", this);
       QPushButton * roundtrip = new QPushButton("&Roundtrip", this);
       
       hbox->addWidget(new QLabel(this));
       hbox->addWidget(edit);
       connect(edit, SIGNAL(clicked()), this, SLOT(edit()));
       
       hbox->addWidget(new QLabel(this));
       hbox->addWidget(roundtrip);
       connect(roundtrip, SIGNAL(clicked()), this, SLOT(accept()));
     }
#endif
   }
   else
     e->setText("cannot read " + p + "!!!!");
   delete [] s;
   f.close();
  }
  else
    e->setText("cannot read " + p + "!!!!");

#if 0
  QPushButton * cancel = new QPushButton("&Cancel", this);

  hbox->addWidget(new QLabel(this));
  hbox->addWidget(cancel);
  hbox->addWidget(new QLabel(this));
  connect(cancel, SIGNAL(clicked()), this, SLOT(reject()));
#endif
  
  // not done in polish else the initial size is too small
  UmlDesktop::setsize_center(this, previous_size, 0.5, 0.5);
}

SourceDialog::~SourceDialog() {
  edited = FALSE;
  edition_number -= 1;
  previous_size = size();
}

void SourceDialog::updateCursorPos(int l, int c) {
  QString s;
  
  s.sprintf("line %-7d column %-6d", l+1, c+1);
  lineColumn->setText(s);
}

void SourceDialog::edit() {
  e->setEnabled(FALSE);
  //..........
}