/***************************************************************************

                    types options dialog page

    -----------------------------------------------------------------------

    begin          : Sun Sep 12 15:38:31 1999

    copyright      : (C) 1999-2001 Ewald Arnold <kvoctrain@ewald-arnold.de>
                     (C) 2001 The KDE-EDU team
                     (C) 2005 Peter Hedlund <peter.hedlund@kdemail.net>

    -----------------------------------------------------------------------

 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

#include "TypeOptPage.h"

#include <tdeapplication.h>
#include <kinputdialog.h>
#include <tdemessagebox.h>
#include <tdelocale.h>

#include <tqpushbutton.h>

#include <QueryManager.h>

#define TYPE_TAG ". "

TypeOptPage::TypeOptPage
(
  const vector<TQString> &types,
  kvoctrainDoc    *_doc,
  TQWidget         *parent,
  const char      *name
)
  :
  TypeOptPageForm( parent, name ),
  doc(_doc)
{
  connect( typeList, TQ_SIGNAL(highlighted(int)), TQ_SLOT(slotTypeChosen(int)) );
  connect( b_cleanup, TQ_SIGNAL(clicked()), TQ_SLOT(slotCleanup()) );
  connect( b_delete, TQ_SIGNAL(clicked()), TQ_SLOT(slotDeleteType()) );
  connect( b_modify, TQ_SIGNAL(clicked()), TQ_SLOT(slotModifyType()) );
  connect( b_new, TQ_SIGNAL(clicked()), TQ_SLOT(slotNewType()) );

  TQString str;
  for (int i = 0; i < (int) types.size(); i++) {
    str.setNum (i+1);
    if (i <= 9)
      str.insert (0, " ");
    typeList->insertItem (str+TYPE_TAG+types[i]);
    typeIndex.push_back(i);
  }

  act_type = 0;
  if (types.size() != 0)
    typeList->setCurrentItem (act_type);

  b_modify->setEnabled(typeList->count() != 0);
  b_delete->setEnabled(typeList->count() != 0);

  typeList->setFocus();
}


void TypeOptPage::slotTypeChosen(int index)
{
  act_type = index;
}


void TypeOptPage::slotNewType()
{
  bool ok;
  TQString getType = KInputDialog::getText(
              i18n( "Type Description" ), i18n( "Enter type description:" ), TQString(), &ok );
  if( !ok )
    return;
  TQString str;
  int i = typeList->count()+1;
  str.setNum (i);
  if (i <= 9)
    str.insert (0, " ");
  typeList->insertItem (str+TYPE_TAG+getType.stripWhiteSpace());
  typeIndex.push_back(-(i-1));
  act_type = typeList->count();
  typeList->setCurrentItem (i-1);
  b_modify->setEnabled(true);
  b_delete->setEnabled(true);
}


void TypeOptPage::slotModifyType()
{
  if (typeList->count() != 0
      && (int) typeList->count() > act_type) {
    TQString str = typeList->text (act_type);
    int pos = str.find (TYPE_TAG);
    str.remove (0, pos+strlen (TYPE_TAG));
    bool ok;
    TQString getType = KInputDialog::getText(
                i18n( "Type Description" ), i18n( "Enter type description:" ), str, &ok );
    if( !ok )
      return;
    TQString str2;
    str2.setNum (act_type+1);
    if (act_type <= 9)
      str2.insert (0, " ");
    typeList->changeItem (str2+TYPE_TAG+getType.stripWhiteSpace(), act_type);
  }
}


void TypeOptPage::updateListBox(int start)
{
  TQString str, str2;
  for (int i = start; i < (int) typeList->count(); i++) {
    str = typeList->text (i);
    int pos = str.find (TYPE_TAG);
    str.remove (0, pos+strlen (TYPE_TAG));
    str2.setNum (i+1);
    if (i <= 9)
      str2.insert (0, " ");
    typeList->changeItem (str2+TYPE_TAG+str, i);
  }
}


void TypeOptPage::slotDeleteType()
{
  int act = act_type;
  if (typeList->count() != 0
      && (int) typeList->count() > act) {

    TQString t;
    t.setNum(typeIndex[act_type]+1);
    t.insert (0, TQM_USER_TYPE);
    for (int ent = 0; ent < doc->numEntries(); ent++) {
      // FIXME: ProgressDlg here?
      kvoctrainExpr *exp = doc->getEntry(ent);
      for (int lang = 0; lang < (int) doc->numLangs(); lang++) {
        if (exp->getType(lang) == t) {
          KMessageBox::information(this,
                    i18n("This user defined type could not be deleted\nbecause it is in use."),
                    kapp->makeStdCaption(i18n("Deleting Type Description")));
          return;
        }
      }
    }

    typeList->removeItem (act);
    typeIndex.erase (typeIndex.begin() + act);

    if ((int) typeList->count() <= act)
      act = typeList->count()-1;
    else
      updateListBox(act); // update items after current

    if (act >= 0)
      typeList->setCurrentItem (act);
  }
  b_modify->setEnabled(typeList->count() != 0);
  b_delete->setEnabled(typeList->count() != 0);
}


void TypeOptPage::getTypeNames (vector<TQString> &ret_type, vector<int> &ret_Index)
{
  TQString str;    ret_type.clear();
  for (int i = 0; i < (int) typeList->count(); i++) {
    str = typeList->text(i);
    int pos = str.find (TYPE_TAG);
    str.remove (0, pos+strlen (TYPE_TAG));
    ret_type.push_back (str);
  }
  ret_Index = typeIndex;
}


void TypeOptPage::slotCleanup()
{
  vector<bool> used_type;
  for (int i = 0; i <= (int) typeList->count(); i++)
    used_type.push_back(false);

  for (int col = 0; col < doc->numLangs(); col++)
    for (int i = 0; i < (int) doc->numEntries(); i++) {
      TQString t = doc->getEntry(i)->getType(col);
      if (t.left(strlen(TQM_USER_TYPE)) == TQM_USER_TYPE) {
        t.remove (0, 1);
        int idx = t.toInt();
        if ((int) used_type.size() < idx)
          used_type.resize(idx);
        if (idx != 0)
          used_type[idx-1] = true ;
      }
    }

  for (int i = used_type.size()-1; i >= 0; i--)
    if (!used_type[i]) {
      for (int u = 0; u < (int) typeIndex.size() ; u++) {
        if (typeIndex[u] == i || typeIndex[u] < 0) {
          act_type = i;
          slotDeleteType();
          break;
        }
      }
    }

  act_type = 0;
  typeList->setCurrentItem (act_type);
}


void TypeOptPage::cleanUnused(kvoctrainDoc *doc, const vector<int> &typeIndex, int old_types)
{
  vector<int> translate_index;
  vector<TQString> new_typeStr;

  /////////////////////////////////////////////////////
  // translate_index contains new index number for each
  // old index
  for (int i = 0; i <= TQMAX (old_types, (int) typeIndex.size()); i++)
    translate_index.push_back(0);

  // now adjust lesson descriptions to new index

  for (int i = 0; i < (int) typeIndex.size(); i++) {
    if (typeIndex[i] >= 0)
      translate_index[typeIndex[i]+1] = i+1;
  }

  // only keep remaining type indices

  // set type index to 0 when not needed any more
  // and translate to new index

  for (int col = 0; col < doc->numLangs(); col++) {
    for (int i = 0; i < doc->numEntries(); i++) {
      TQString old = doc->getEntry(i)->getType (col);
      if (!old.isEmpty() && old.left(strlen(TQM_USER_TYPE)) == TQM_USER_TYPE) {
        old.remove (0, 1);
        int o = old.toInt();

        TQString newtype;
        if (translate_index[o] != 0) {
          newtype.setNum (translate_index[o]);
          newtype.insert (0, TQM_USER_TYPE);
          doc->getEntry(i)->setType (col, newtype);
        }
        else
          doc->getEntry(i)->setType (col, "");
      }
    }
  }

}

#include "TypeOptPage.moc"