src/frontends/qt4/QCitationDialog.cpp

   1 /**
   2  * \file QCitationDialog.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Kalle Dalheimer
   7  * \author John Levon
   8  * \author Jürgen Spitzmüller
   9  * \author Abdelrazak Younes
  10  *
  11  * Full author contact details are available in file CREDITS.
  12  */
  13
  14 #include <config.h>
  15
  16 #include "QCitationDialog.h"
  17
  18 #include "QCitation.h"
  19
  20 #include "frontends/controllers/frontend_helpers.h"
  21 #include "frontends/controllers/ControlCitation.h"
  22
  23 #include "debug.h"
  24 #include "gettext.h"
  25
  26 #include <algorithm>
  27 #include <vector>
  28 #include <string>
  29
  30 #include <QCloseEvent>
  31 #include <QKeyEvent>
  32
  33 using std::vector;
  34 using std::string;
  35
  36 namespace lyx {
  37 namespace frontend {
  38
  39
  40 QCitationDialog::QCitationDialog(Dialog & dialog, QCitation * form)
  41         : Dialog::View(dialog, _("Citation")), form_(form)
  42 {
  43         setupUi(this);
  44
  45         setWindowTitle(toqstr("LyX: " + getTitle()));
  46
  47         selectedLV->setModel(form_->selected());
  48         availableLV->setModel(form_->available());
  49
  50         connect(citationStyleCO, SIGNAL(activated(int)),
  51                 this, SLOT(changed()));
  52         connect(fulllistCB, SIGNAL(clicked()),
  53                 this, SLOT(changed()));
  54         connect(forceuppercaseCB, SIGNAL(clicked()),
  55                 this, SLOT(changed()));
  56         connect(textBeforeED, SIGNAL(textChanged(const QString&)),
  57                 this, SLOT(changed()));
  58         connect(textAfterED, SIGNAL(textChanged(const QString&)),
  59                 this, SLOT(changed()));
  60         connect(clearPB, SIGNAL(clicked()),
  61                 findLE, SLOT(clear()));
  62         connect(availableLV->selectionModel(),
  63                 SIGNAL(currentChanged(const QModelIndex &, const QModelIndex &)),
  64                 this, SLOT(availableChanged(const QModelIndex &, const QModelIndex &)));
  65         connect(selectedLV->selectionModel(),
  66                 SIGNAL(currentChanged(const QModelIndex &, const QModelIndex &)),
  67                 this, SLOT(selectedChanged(const QModelIndex &, const QModelIndex &)));
  68         connect(this, SIGNAL(rejected()), this, SLOT(cleanUp()));
  69         availableLV->installEventFilter(this);
  70         selectedLV->installEventFilter(this);
  71 }
  72
  73
  74 QCitationDialog::~QCitationDialog()
  75 {
  76 }
  77
  78
  79 bool QCitationDialog::eventFilter(QObject * obj, QEvent * event)
  80 {
  81         if (obj == availableLV) {
  82                 if (event->type() != QEvent::KeyPress)
  83                         return QObject::eventFilter(obj, event);
  84                 QKeyEvent * keyEvent = static_cast<QKeyEvent *>(event);
  85                 int const keyPressed = keyEvent->key();
  86                 Qt::KeyboardModifiers const keyModifiers = keyEvent->modifiers();
  87                 //Enter key without modifier will add current item.
  88                 //Ctrl-Enter will add it and close the dialog.
  89                 //This is designed to work both with the main enter key
  90                 //and the one on the numeric keypad.
  91                 if ((keyPressed == Qt::Key_Enter || keyPressed == Qt::Key_Return) &&
  92                                 //We want one or both of Control and Keypad, and nothing else
  93                                 //(KeypadModifier is what you get if you use the Enter key on the
  94                                 //numeric keypad.)
  95                                 (!keyModifiers ||
  96                                  (keyModifiers == Qt::ControlModifier) ||
  97                                  (keyModifiers == Qt::KeypadModifier)  ||
  98                                  (keyModifiers == (Qt::ControlModifier | Qt::KeypadModifier))
  99                                 )
 100                         ) {
 101                                 if (addPB->isEnabled())
 102                                         on_addPB_clicked();
 103                                 if (keyModifiers & Qt::ControlModifier)
 104                                         on_okPB_clicked();
 105                                 event->accept();
 106                                 return true;
 107                 }
 108         } else if (obj == selectedLV) {
 109                 //Delete or backspace key will delete current item
 110                 //...with control modifier will clear the list
 111                 if (event->type() != QEvent::KeyPress)
 112                         return QObject::eventFilter(obj, event);
 113                 QKeyEvent * keyEvent = static_cast<QKeyEvent *>(event);
 114                 int const keyPressed = keyEvent->key();
 115                 Qt::KeyboardModifiers const keyModifiers = keyEvent->modifiers();
 116                 if (keyPressed == Qt::Key_Delete || keyPressed == Qt::Key_Backspace) {
 117                         if (keyModifiers == Qt::NoModifier && deletePB->isEnabled())
 118                                 on_deletePB_clicked();
 119                         else if (keyModifiers == Qt::ControlModifier) {
 120                                 form_->clearSelection();
 121                                 update();
 122                         } else
 123                                 //ignore it otherwise
 124                                 return QObject::eventFilter(obj, event);
 125                         event->accept();
 126                         return true;
 127                 }
 128         }
 129         return QObject::eventFilter(obj, event);
 130 }
 131
 132
 133 void QCitationDialog::cleanUp()
 134 {
 135         form_->clearSelection();
 136         form_->clearParams();
 137         close();
 138 }
 139
 140
 141 void QCitationDialog::closeEvent(QCloseEvent * e)
 142 {
 143         form_->clearSelection();
 144         form_->clearParams();
 145         e->accept();
 146 }
 147
 148
 149 void QCitationDialog::apply()
 150 {
 151         int  const choice = std::max(0, citationStyleCO->currentIndex());
 152         style_ = choice;
 153         bool const full  = fulllistCB->isChecked();
 154         bool const force = forceuppercaseCB->isChecked();
 155
 156         QString const before = textBeforeED->text();
 157         QString const after = textAfterED->text();
 158
 159         form_->apply(choice, full, force, before, after);
 160 }
 161
 162
 163 void QCitationDialog::hide()
 164 {
 165         form_->clearParams();
 166         accept();
 167 }
 168
 169
 170 void QCitationDialog::show()
 171 {
 172         findLE->clear();
 173         availableLV->setFocus();
 174         QDialog::show();
 175         raise();
 176         activateWindow();
 177 }
 178
 179
 180 bool QCitationDialog::isVisible() const
 181 {
 182         return QDialog::isVisible();
 183 }
 184
 185
 186 void QCitationDialog::on_okPB_clicked()
 187 {
 188         apply();
 189         form_->clearSelection();
 190         hide();
 191 }
 192
 193
 194 void QCitationDialog::on_cancelPB_clicked()
 195 {
 196         form_->clearSelection();
 197         hide();
 198 }
 199
 200
 201 void QCitationDialog::on_applyPB_clicked()
 202 {
 203         apply();
 204 }
 205
 206
 207 void QCitationDialog::on_restorePB_clicked()
 208 {
 209         form_->init();
 210         update();
 211 }
 212
 213
 214 void QCitationDialog::update()
 215 {
 216         if (selectedLV->selectionModel()->selectedIndexes().isEmpty()) {
 217                 if (availableLV->selectionModel()->selectedIndexes().isEmpty()
 218                         && availableLV->model()->rowCount() > 0)
 219                                 availableLV->setCurrentIndex(availableLV->model()->index(0,0));
 220                 updateInfo(availableLV->currentIndex());
 221         } else
 222                 updateInfo(selectedLV->currentIndex());
 223
 224         setButtons();
 225
 226         textBeforeED->setText(form_->textBefore());
 227         textAfterED->setText(form_->textAfter());
 228
 229         fillStyles();
 230         updateStyle();
 231 }
 232
 233
 234 void QCitationDialog::updateStyle()
 235 {
 236         biblio::CiteEngine const engine = form_->getEngine();
 237         bool const natbib_engine =
 238                 engine == biblio::ENGINE_NATBIB_AUTHORYEAR ||
 239                 engine == biblio::ENGINE_NATBIB_NUMERICAL;
 240         bool const basic_engine = engine == biblio::ENGINE_BASIC;
 241
 242         fulllistCB->setEnabled(natbib_engine);
 243         forceuppercaseCB->setEnabled(natbib_engine);
 244         textBeforeED->setEnabled(!basic_engine);
 245         textBeforeLA->setEnabled(!basic_engine);
 246
 247         string const & command = form_->params().getCmdName();
 248
 249         // Find the style of the citekeys
 250         vector<biblio::CiteStyle> const & styles =
 251                 ControlCitation::getCiteStyles();
 252         biblio::CitationStyle const cs(command);
 253
 254         vector<biblio::CiteStyle>::const_iterator cit =
 255                 std::find(styles.begin(), styles.end(), cs.style);
 256
 257         // restore the latest natbib style
 258         if (style_ >= 0 && style_ < citationStyleCO->count())
 259                 citationStyleCO->setCurrentIndex(style_);
 260         else
 261                 citationStyleCO->setCurrentIndex(0);
 262
 263         fulllistCB->setChecked(false);
 264         forceuppercaseCB->setChecked(false);
 265
 266         if (cit != styles.end()) {
 267                 int const i = int(cit - styles.begin());
 268                 citationStyleCO->setCurrentIndex(i);
 269                 fulllistCB->setChecked(cs.full);
 270                 forceuppercaseCB->setChecked(cs.forceUCase);
 271         }
 272 }
 273
 274
 275 void QCitationDialog::fillStyles()
 276 {
 277         int const orig = citationStyleCO->currentIndex();
 278
 279         citationStyleCO->clear();
 280
 281         QStringList selected_keys = form_->selected()->stringList();
 282         if (selected_keys.empty()) {
 283                 citationStyleCO->setEnabled(false);
 284                 citationStyleLA->setEnabled(false);
 285                 return;
 286         }
 287
 288         int curr = selectedLV->model()->rowCount() - 1;
 289         if (curr < 0)
 290                 return;
 291
 292         if (!selectedLV->selectionModel()->selectedIndexes().empty())
 293                 curr = selectedLV->selectionModel()->selectedIndexes()[0].row();
 294
 295         QStringList sty = form_->citationStyles(curr);
 296
 297         bool const basic_engine =
 298                 (form_->getEngine() == biblio::ENGINE_BASIC);
 299
 300         citationStyleCO->setEnabled(!sty.isEmpty() && !basic_engine);
 301         citationStyleLA->setEnabled(!sty.isEmpty() && !basic_engine);
 302
 303         if (sty.isEmpty() || basic_engine)
 304                 return;
 305
 306         citationStyleCO->insertItems(0, sty);
 307
 308         if (orig != -1 && orig < citationStyleCO->count())
 309                 citationStyleCO->setCurrentIndex(orig);
 310 }
 311
 312
 313 bool QCitationDialog::isSelected(const QModelIndex & idx)
 314 {
 315         QString const str = idx.data().toString();
 316         return form_->selected()->stringList().contains(str);
 317 }
 318
 319
 320 void QCitationDialog::setButtons()
 321 {
 322         int const arows = availableLV->model()->rowCount();
 323         QModelIndexList const availSels =
 324                         availableLV->selectionModel()->selectedIndexes();
 325         addPB->setEnabled(arows > 0 &&
 326                         !availSels.isEmpty() &&
 327                         !isSelected(availSels.first()));
 328
 329         int const srows = selectedLV->model()->rowCount();
 330         QModelIndexList const selSels =
 331                         selectedLV->selectionModel()->selectedIndexes();
 332         int const sel_nr =      selSels.empty() ? -1 : selSels.first().row();
 333         deletePB->setEnabled(sel_nr >= 0);
 334         upPB->setEnabled(sel_nr > 0);
 335         downPB->setEnabled(sel_nr >= 0 && sel_nr < srows - 1);
 336 }
 337
 338
 339 void QCitationDialog::updateInfo(const QModelIndex & idx)
 340 {
 341         if (idx.isValid()) {
 342                 QString const keytxt = form_->getKeyInfo(idx.data().toString());
 343                 infoML->document()->setPlainText(keytxt);
 344         } else
 345                 infoML->document()->clear();
 346 }
 347
 348
 349 void QCitationDialog::on_selectedLV_clicked(const QModelIndex &)
 350 {
 351         update();
 352 }
 353
 354
 355 void QCitationDialog::selectedChanged(const QModelIndex & idx, const QModelIndex &)
 356 {
 357         if (!idx.isValid())
 358                 return;
 359         update();
 360 }
 361
 362
 363 void QCitationDialog::on_availableLV_clicked(const QModelIndex &)
 364 {
 365         update();
 366 }
 367
 368
 369 void QCitationDialog::availableChanged(const QModelIndex & idx, const QModelIndex &)
 370 {
 371         if (!idx.isValid())
 372                 return;
 373         update();
 374 }
 375
 376
 377 void QCitationDialog::on_availableLV_doubleClicked(const QModelIndex & idx)
 378 {
 379         if (isSelected(idx))
 380                 return;
 381         on_addPB_clicked();
 382 }
 383
 384
 385 namespace {
 386 //helper function for next two
 387 QModelIndex getSelectedIndex(QListView * lv) {
 388         //Encourage compiler to use NRVO
 389         QModelIndex retval = QModelIndex();
 390         QModelIndexList selIdx =
 391                 lv->selectionModel()->selectedIndexes();
 392         if (!selIdx.empty())
 393                 retval = selIdx.first();
 394         return retval;
 395 }
 396 }//anonymous namespace
 397
 398
 399 void QCitationDialog::on_addPB_clicked()
 400 {
 401         QModelIndex const idxToAdd = getSelectedIndex(availableLV);
 402         if (!idxToAdd.isValid())
 403                 return;
 404         QModelIndex idx = selectedLV->currentIndex();
 405         form_->addKey(idxToAdd);
 406         if (idx.isValid())
 407                 selectedLV->setCurrentIndex(idx);
 408         update();
 409 }
 410
 411
 412 void QCitationDialog::on_deletePB_clicked()
 413 {
 414         QModelIndex idx = getSelectedIndex(selectedLV);
 415         if (!idx.isValid())
 416                 return;
 417         int nrows = selectedLV->model()->rowCount();
 418
 419         form_->deleteKey(idx);
 420
 421         if (idx.row() == nrows - 1)
 422                 idx = idx.sibling(idx.row() - 1, idx.column());
 423
 424         if (nrows>1)
 425                 selectedLV->setCurrentIndex(idx);
 426
 427         update();
 428 }
 429
 430
 431 void QCitationDialog::on_upPB_clicked()
 432 {
 433         QModelIndex idx = selectedLV->currentIndex();
 434         form_->upKey(idx);
 435         selectedLV->setCurrentIndex(idx.sibling(idx.row() - 1, idx.column()));
 436         availableLV->selectionModel()->reset();
 437         update();
 438 }
 439
 440
 441 void QCitationDialog::on_downPB_clicked()
 442 {
 443         QModelIndex idx = selectedLV->currentIndex();
 444         form_->downKey(idx);
 445         selectedLV->setCurrentIndex(idx.sibling(idx.row() + 1, idx.column()));
 446         availableLV->selectionModel()->reset();
 447         update();
 448 }
 449
 450
 451 void QCitationDialog::findText(QString const & text)
 452 {
 453         bool const case_sentitive = caseCB->checkState();
 454         bool const reg_exp = regexCB->checkState();
 455         form_->findKey(text, false, case_sentitive, reg_exp);
 456         selectedLV->selectionModel()->reset();
 457         update();
 458 }
 459
 460
 461 void QCitationDialog::on_findLE_textChanged(const QString & text)
 462 {
 463         clearPB->setDisabled(text.isEmpty());
 464         if (text.isEmpty())
 465                 findLE->setFocus();
 466         findText(text);
 467 }
 468
 469
 470 void QCitationDialog::on_caseCB_stateChanged(int)
 471 {
 472         findText(findLE->text());
 473 }
 474
 475
 476 void QCitationDialog::on_regexCB_stateChanged(int)
 477 {
 478         findText(findLE->text());
 479 }
 480
 481
 482 void QCitationDialog::changed()
 483 {
 484         fillStyles();
 485         setButtons();
 486 }
 487
 488
 489 } // namespace frontend
 490 } // namespace lyx
 491
 492 #include "QCitationDialog_moc.cpp"