dictionary.cpp

   1 // Copyright (c) 2008, Andrew Bécsi (andrewbecsi @ yahoo . co . uk)
   2 //
   3 // This program is free software, released under the GNU General Public License
   4 // and you are welcome to redistribute it under certain conditions.  It comes with
   5 // ABSOLUTELY NO WARRANTY; for details read the GNU General Public License to be
   6 // found in the file "COPYING" distributed with this program, or online at:
   7 // http://www.gnu.org/copyleft/gpl.html
   8 //
   9 // encodig=UTF-8
  10 //
  11 #include <QtGui>
  12 #include <QtNetwork>
  13 //#include <QtDebug>
  14 #include "dictionary.h"
  15
  16 Dictionary::Dictionary(QWidget *parent)
  17     : QDialog(parent)
  18 {
  19
  20 //>>version
  21     appver=QString("0.3.1");
  22 //<<version
  23
  24     http = new QHttp(this);
  25         setupUi(this);
  26         enableTranslateButton();
  27         prev->setEnabled(false);
  28         next->setEnabled(false);
  29         deleteHistory->setEnabled(false);
  30
  31
  32     connect(lineEdit, SIGNAL(textChanged(const QString &)),
  33             this, SLOT(enableTranslateButton()));
  34     connect(http, SIGNAL(requestFinished(int, bool)),
  35             this, SLOT(httpRequestFinished(int, bool)));
  36     connect(http, SIGNAL(responseHeaderReceived(const QHttpResponseHeader &)),
  37             this, SLOT(readResponseHeader(const QHttpResponseHeader &)));
  38     connect(pushButton, SIGNAL(clicked()),
  39             this, SLOT(translateClicked()));
  40     connect(pushButton, SIGNAL(clicked()),
  41             this, SLOT(statusChanged()));
  42     connect(dictionaryBox, SIGNAL(currentIndexChanged( int )),
  43             this, SLOT(setDic(int)));
  44     connect(modeBox, SIGNAL(currentIndexChanged( int )),
  45             this, SLOT(setMode(int)));
  46     connect(hitBox, SIGNAL(currentIndexChanged( int )),
  47             this, SLOT(setHits(int)));
  48     connect(aboutButton, SIGNAL(clicked()),
  49             this, SLOT(aboutClicked()));
  50     connect(deleteHistory, SIGNAL(clicked()),
  51             this, SLOT(deleteHistoryClicked()));
  52     connect(prev, SIGNAL(clicked()),
  53             this, SLOT(stepPrev()));
  54     connect(next, SIGNAL(clicked()),
  55             this, SLOT(stepNext()));
  56         //
  57         // initialize UI
  58         //
  59
  60         QStringList labels;
  61         labels << QString("Szó") << QString("Jelentés");
  62         tableWidget->setHorizontalHeaderLabels(labels);
  63 //      tableWidget->horizontalHeader()->setResizeMode(0, QHeaderView::Stretch);
  64         tableWidget->horizontalHeader()->setResizeMode(1, QHeaderView::Stretch);
  65
  66         tableWidget->verticalHeader()->hide();
  67         tableWidget->setShowGrid(true);
  68
  69         szotar="szotarE";
  70         dic="E";
  71         mode="0";
  72         hits="20";
  73
  74
  75 /*
  76 á=%E1
  77 ä=%E4
  78 é=%E9
  79 í=%ED
  80 ó=%F3
  81 ö=%F6
  82 ő=%F5
  83 ú=%FA
  84 ü=%FC
  85 ű=%FB
  86 ß=%DF
  87 */
  88
  89         html_list << "&aacute;" << "&auml;" << "&eacute;" << "&iacute;" << "&oacute;" << "&ouml;" << "&otilde;" << "&uacute;" << "&uuml;"<< "&ucirc;" << "&szlig;";
  90         latin_list << "á" << "ä" << "é" << "í" << "ó" << "ö" << "ő" << "ú" << "ü" << "ű" << "ß";
  91         hex_list << "%E1" << "%E4" << "%E9" << "%ED" << "%F3" << "%F6" << "%F5" << "%FA" << "%FC" << "%FB" << "%DF";
  92 }
  93
  94 void Dictionary::translate(settings &set)
  95 {
  96     if (history.isEmpty()) deleteHistory->setEnabled(false);
  97         else deleteHistory->setEnabled(true);
  98     lineEdit->selectAll();
  99     enablePrevButton();
 100     enableNextButton();
 101
 102     QString word((set.word.split(" ", QString::SkipEmptyParts)).join("+"));
 103
 104
 105         for (int i = 0; i < latin_list.size(); ++i){
 106                 word.replace(latin_list[i],hex_list[i]);
 107         }
 108
 109     QString path("/cgi-bin/"+szotar+"?search_term="+word+"&max_hits="+hits+"&mode="+mode+"&diction="+dic);
 110     QString host("www.cab.u-szeged.hu");
 111     QUrl url;
 112
 113     url.setHost(host);
 114     url.setPath(path);
 115     url.setScheme("http");
 116     http->setHost(url.host());
 117
 118     buffer=new QBuffer();
 119     httpGetId = http->get(url.path(), buffer);
 120
 121     pushButton->setEnabled(false);
 122 }
 123
 124
 125
 126 QStringList Dictionary::filter(QString html,QRegExp rx)
 127 {
 128
 129         QStringList list;
 130         QString str;
 131         int pos = 0;
 132         while ((pos = rx.indexIn(html, pos)) != -1) {
 133                 str = rx.cap(1);
 134                 list.append(str);
 135                 pos += rx.matchedLength();
 136         }
 137
 138         return list;
 139
 140 }
 141
 142 void Dictionary::updateUi(settings &set)
 143 {
 144         lineEdit->setText(set.word);
 145         dictionaryBox->setCurrentIndex(set.dict);
 146         modeBox->setCurrentIndex(set.mode);
 147         hitBox->setCurrentIndex(set.hit);
 148 }
 149
 150 void Dictionary::updateHistory(settings &set)
 151 {
 152
 153         if ( history.isEmpty() )
 154         {
 155                 history.prepend(set);
 156                 hIter = history.begin();
 157         }else if ( !((*history.begin()) == set) ) {
 158                         history.prepend(set);
 159                         hIter = history.begin();
 160                         if (history.size()>20)
 161                         {
 162                                         history.removeLast();
 163                         }
 164         }
 165
 166         enablePrevButton();
 167         enableNextButton();
 168 }
 169
 170 void Dictionary::translateClicked()
 171 {
 172
 173         QString text(lineEdit->text());
 174         settings set(dictionaryBox->currentIndex(),modeBox->currentIndex(), hitBox->currentIndex(), text);
 175         translate(set);
 176         updateHistory(set);
 177 }
 178
 179 void Dictionary::httpRequestFinished(int requestId, bool error)
 180 {
 181
 182     if (requestId != httpGetId)
 183         return;
 184     buffer->close();
 185
 186     QString str;
 187     QString html;
 188     QStringList word_list;
 189     QStringList meaning_list;
 190
 191
 192     QByteArray result=buffer->data();
 193
 194         QTextStream in(&result);
 195         in.setCodec("ISO 8859-2");
 196
 197         //
 198         // remove multiple whitespace and newline characters
 199         //
 200         while(!in.atEnd()){
 201                 in>>str;
 202                 html.append(str+" ");
 203         }
 204
 205
 206         //
 207         //filtering word data from html string
 208         //
 209
 210         QRegExp rx( "<LI>(.+)--&gt;" );
 211         rx.setCaseSensitivity(Qt::CaseSensitive);
 212         rx.setMinimal( true );
 213
 214         word_list=filter(html,rx);
 215
 216         //
 217         //filtering meaning data from html string
 218         //
 219
 220         rx.setPattern("=[HEG]\">(.+)</A></LI>");
 221         meaning_list=filter(html,rx);
 222
 223         for (int i = 0; i < word_list.size(); ++i){
 224
 225                 QString tmpWord=word_list[i];
 226                 QString tmpMeaning=meaning_list[i];
 227                 for (int j = 0; j < html_list.size(); ++j){
 228                         tmpWord.replace(html_list[j],latin_list[j]);
 229                         tmpMeaning.replace(html_list[j],latin_list[j]);
 230                 }
 231
 232                 tmpWord.remove(QString("<B>"), Qt::CaseInsensitive);
 233                 tmpWord.remove(QString("</B>"), Qt::CaseInsensitive);
 234                 tmpMeaning.remove(QString("<B>"), Qt::CaseInsensitive);
 235                 tmpMeaning.remove(QString("</B>"), Qt::CaseInsensitive);
 236
 237                 word_list.replace(i,tmpWord.toUtf8());
 238                 meaning_list.replace(i,tmpMeaning.toUtf8());
 239         }
 240
 241         fillTable( word_list, meaning_list);
 242
 243     if (error) {
 244         QMessageBox::information(this, tr("HTTP"),
 245                                  tr("<font color=red>A letöltés meghiúsult: %1.</font>")
 246                                  .arg(http->errorString())+tr("<br/>Ellenőrizd az internetkapcsolatod!"));
 247     }
 248
 249     enableTranslateButton();
 250 }
 251
 252 void Dictionary::fillTable(QStringList word_list,QStringList meaning_list)
 253 {
 254
 255         QString found;
 256         found.setNum(word_list.size());
 257         statusLabel->setText(QString("Keresett szó: ")+lineEdit->text()+", listázott találatok száma: "+found);
 258
 259         if (word_list.size()==0) statusLabel->setText(QString("<font color=red>Nincs találat!</font>"));
 260         tableWidget->setRowCount(word_list.size());
 261
 262
 263         for (int i = 0; i < word_list.size();++i){
 264 //              QStringList meanings;
 265
 266                 tableWidget->setItem(i, 0, new QTableWidgetItem(word_list[i]));
 267                 //meanings << meaning_list[i];
 268                 tableWidget->setItem(i, 1, new QTableWidgetItem(meaning_list[i]));
 269
 270 //              while( (i+1 < word_list.size()) && word_list[i+1] == word_list[i] ){
 271 //                      ++i;
 272 //                      meanings << meaning_list[i];
 273 //              }
 274 //              tableWidget->setItem(row, 1, new QTableWidgetItem(meanings.join("; ")));
 275
 276         }
 277
 278         tableWidget->resizeColumnToContents( 0 );
 279         tableWidget->resizeColumnToContents( 1 );
 280         tableWidget->setSortingEnabled(false);
 281 }
 282
 283 void Dictionary::readResponseHeader(const QHttpResponseHeader &responseHeader)
 284 {
 285     if (responseHeader.statusCode() != 200) {
 286         QMessageBox::information(this, tr("HTTP"),
 287                                  tr("<font color=red>A letöltés meghiúsult: %1.")
 288                                  .arg(responseHeader.reasonPhrase())+tr("<br/>Az adatbázis nem elérhető. Próbáld meg később."));
 289         http->abort();
 290         return;
 291    }
 292 }
 293
 294 void Dictionary::setMode(int index)
 295 {
 296         mode.setNum(index);
 297 }
 298
 299 void Dictionary::setHits(int index)
 300 {
 301         switch(index)
 302         {
 303                 case 0: hits="20";break;
 304                 case 1: hits="50";break;
 305                 case 2: hits="100";break;
 306                 case 3: hits="200";break;
 307         }
 308 }
 309
 310 void Dictionary::setDic(int index)
 311 {
 312         switch(index)
 313         {
 314                 case 0: dic="E";szotar="szotarE";break;
 315                 case 1: dic="H";szotar="szotarE";break;
 316                 case 2: dic="G";szotar="szotarG";break;
 317                 case 3: dic="H";szotar="szotarG";break;
 318         }
 319 }
 320
 321 void Dictionary::statusChanged()
 322 {
 323         statusLabel->setText(QString("<i>Lekérdezés...</i>"));
 324 }
 325
 326 void Dictionary::enableTranslateButton()
 327 {
 328         pushButton->setEnabled(!lineEdit->text().isEmpty());
 329 }
 330
 331 void Dictionary::enablePrevButton()
 332 {
 333         prev->setEnabled( false );
 334
 335         if ( !(history.isEmpty()) && ( history.indexOf(*hIter) < history.size()-1 ) ){
 336                         prev->setEnabled( true );
 337         }
 338 }
 339
 340 void Dictionary::enableNextButton()
 341 {
 342         next->setEnabled( false );
 343
 344         if ( !(history.isEmpty()) && ( history.indexOf(*hIter) > 0 ) ){
 345                         next->setEnabled( true );
 346         }
 347 }
 348
 349 void Dictionary::stepPrev()
 350 {
 351         ++hIter;
 352         updateUi(*hIter);
 353         translate(*hIter);
 354 }
 355
 356 void Dictionary::stepNext()
 357 {
 358         --hIter;
 359         updateUi(*hIter);
 360         translate(*hIter);
 361 }
 362
 363 void Dictionary::deleteHistoryClicked()
 364 {
 365         history.clear();
 366         prev->setEnabled(false);
 367         next->setEnabled(false);
 368         deleteHistory->setEnabled(false);
 369 }
 370 void Dictionary::aboutClicked()
 371 {
 372         aboutButton->setEnabled(false);
 373         QMessageBox::information(this,"Qtdict Információ", QString("<b>Qtdict v"+appver+"</b><br/><i>© Bécsi András, 2008</i><br/><br/>Egyszerű internetes szótár program, mely a http://www.cab.u-szeged.hu online szótár adatbázist használja.<br/><br/><i>Ez a program a GPL v2 jogi feltételeinek megfelelően használható.</i>"));
 374         aboutButton->setEnabled(true);
 375 }