src/frontends/qt4/GuiCitation.cpp

   1
   2 /**
   3  * \file GuiCitation.cpp
   4  * This file is part of LyX, the document processor.
   5  * Licence details can be found in the file COPYING.
   6  *
   7  * \author Angus Leeming
   8  * \author Kalle Dalheimer
   9  * \author Abdelrazak Younes
  10  * \author Richard Heck
  11  *
  12  * Full author contact details are available in file CREDITS.
  13  */
  14
  15 #include <config.h>
  16
  17 #include "GuiCitation.h"
  18
  19 #include "GuiApplication.h"
  20 #include "GuiSelectionManager.h"
  21 #include "LyXToolBox.h"
  22 #include "qt_helpers.h"
  23
  24 #include "Buffer.h"
  25 #include "BufferView.h"
  26 #include "BiblioInfo.h"
  27 #include "BufferParams.h"
  28 #include "TextClass.h"
  29 #include "FuncRequest.h"
  30
  31 #include "insets/InsetCommand.h"
  32
  33 #include "support/debug.h"
  34 #include "support/docstring.h"
  35 #include "support/gettext.h"
  36 #include "support/lstrings.h"
  37
  38 #include <QCloseEvent>
  39 #include <QMenu>
  40 #include <QSettings>
  41 #include <QShowEvent>
  42 #include <QVariant>
  43
  44 #include <vector>
  45 #include <string>
  46
  47 #undef KeyPress
  48
  49 #include "support/regex.h"
  50
  51 #include <algorithm>
  52 #include <string>
  53 #include <vector>
  54
  55 using namespace std;
  56 using namespace lyx::support;
  57
  58 namespace lyx {
  59 namespace frontend {
  60
  61 // FIXME THREAD
  62 // I am guessing that it would not hurt to make these private members.
  63 static vector<string> citeCmds_;
  64 static vector<CitationStyle> citeStyles_;
  65
  66
  67 template<typename String>
  68 static QStringList to_qstring_list(vector<String> const & v)
  69 {
  70         QStringList qlist;
  71
  72         for (size_t i = 0; i != v.size(); ++i) {
  73                 if (v[i].empty())
  74                         continue;
  75                 qlist.append(lyx::toqstr(v[i]));
  76         }
  77         return qlist;
  78 }
  79
  80
  81 static vector<lyx::docstring> to_docstring_vector(QStringList const & qlist)
  82 {
  83         vector<lyx::docstring> v;
  84         for (int i = 0; i != qlist.size(); ++i) {
  85                 if (qlist[i].isEmpty())
  86                         continue;
  87                 v.push_back(lyx::qstring_to_ucs4(qlist[i]));
  88         }
  89         return v;
  90 }
  91
  92
  93 GuiCitation::GuiCitation(GuiView & lv)
  94         : DialogView(lv, "citation", qt_("Citation")),
  95           style_(0), params_(insetCode("citation"))
  96 {
  97         setupUi(this);
  98
  99         // The filter bar
 100         filter_ = new FancyLineEdit(this);
 101         filter_->setButtonPixmap(FancyLineEdit::Right, getPixmap("images/", "editclear", "svgz,png"));
 102         filter_->setButtonVisible(FancyLineEdit::Right, true);
 103         filter_->setButtonToolTip(FancyLineEdit::Right, qt_("Clear text"));
 104         filter_->setAutoHideButton(FancyLineEdit::Right, true);
 105         filter_->setPlaceholderText(qt_("All avail. citations"));
 106
 107         filterBarL->addWidget(filter_, 0);
 108         findKeysLA->setBuddy(filter_);
 109
 110         // Add search options as button menu
 111         regexp_ = new QAction(qt_("Regular e&xpression"), this);
 112         regexp_->setCheckable(true);
 113         casesense_ = new QAction(qt_("Case se&nsitive"), this);
 114         casesense_->setCheckable(true);
 115         instant_ = new QAction(qt_("Search as you &type"), this);
 116         instant_->setCheckable(true);
 117         instant_->setChecked(true);
 118
 119         QMenu * searchOpts = new QMenu(this);
 120         searchOpts->addAction(regexp_);
 121         searchOpts->addAction(casesense_);
 122         searchOpts->addAction(instant_);
 123         searchOptionsPB->setMenu(searchOpts);
 124
 125         connect(citationStyleCO, SIGNAL(activated(int)),
 126                 this, SLOT(on_citationStyleCO_currentIndexChanged(int)));
 127         connect(starredCB, SIGNAL(clicked()),
 128                 this, SLOT(changed()));
 129         connect(forceuppercaseCB, SIGNAL(clicked()),
 130                 this, SLOT(changed()));
 131         connect(textBeforeED, SIGNAL(textChanged(QString)),
 132                 this, SLOT(updateStyles()));
 133         connect(textAfterED, SIGNAL(textChanged(QString)),
 134                 this, SLOT(updateStyles()));
 135         connect(textBeforeED, SIGNAL(returnPressed()),
 136                 this, SLOT(on_okPB_clicked()));
 137         connect(textAfterED, SIGNAL(returnPressed()),
 138                 this, SLOT(on_okPB_clicked()));
 139
 140         selectionManager = new GuiSelectionManager(availableLV, selectedLV,
 141                         addPB, deletePB, upPB, downPB, &available_model_, &selected_model_);
 142         connect(selectionManager, SIGNAL(selectionChanged()),
 143                 this, SLOT(setCitedKeys()));
 144         connect(selectionManager, SIGNAL(updateHook()),
 145                 this, SLOT(updateControls()));
 146         connect(selectionManager, SIGNAL(okHook()),
 147                 this, SLOT(on_okPB_clicked()));
 148
 149         connect(filter_, SIGNAL(rightButtonClicked()),
 150                 this, SLOT(resetFilter()));
 151         connect(filter_, SIGNAL(textEdited(QString)),
 152                 this, SLOT(filterChanged(QString)));
 153         connect(filter_, SIGNAL(returnPressed()),
 154                 this, SLOT(filterPressed()));
 155         connect(regexp_, SIGNAL(triggered()),
 156                 this, SLOT(regexChanged()));
 157         connect(casesense_, SIGNAL(triggered()),
 158                 this, SLOT(caseChanged()));
 159         connect(instant_, SIGNAL(triggered(bool)),
 160                 this, SLOT(instantChanged(bool)));
 161
 162         setFocusProxy(filter_);
 163 }
 164
 165
 166 GuiCitation::~GuiCitation()
 167 {
 168         delete selectionManager;
 169 }
 170
 171
 172 void GuiCitation::closeEvent(QCloseEvent * e)
 173 {
 174         clearSelection();
 175         DialogView::closeEvent(e);
 176 }
 177
 178
 179 void GuiCitation::applyView()
 180 {
 181         int const choice = max(0, citationStyleCO->currentIndex());
 182         style_ = choice;
 183         bool const full  = starredCB->isChecked();
 184         bool const force = forceuppercaseCB->isChecked();
 185
 186         QString const before = textBeforeED->text();
 187         QString const after = textAfterED->text();
 188
 189         applyParams(choice, full, force, before, after);
 190 }
 191
 192
 193 void GuiCitation::showEvent(QShowEvent * e)
 194 {
 195         filter_->clear();
 196         availableLV->setFocus();
 197         DialogView::showEvent(e);
 198 }
 199
 200
 201 void GuiCitation::on_okPB_clicked()
 202 {
 203         applyView();
 204         clearSelection();
 205         hide();
 206 }
 207
 208
 209 void GuiCitation::on_cancelPB_clicked()
 210 {
 211         clearSelection();
 212         hide();
 213 }
 214
 215
 216 void GuiCitation::on_applyPB_clicked()
 217 {
 218         applyView();
 219 }
 220
 221
 222 void GuiCitation::on_restorePB_clicked()
 223 {
 224         init();
 225         updateFilterHint();
 226 }
 227
 228
 229 void GuiCitation::updateControls()
 230 {
 231         BiblioInfo const & bi = bibInfo();
 232         updateControls(bi);
 233 }
 234
 235
 236 // The main point of separating this out is that the fill*() methods
 237 // called in update() do not need to be called for INTERNAL updates,
 238 // such as when addPB is pressed, as the list of fields, entries, etc,
 239 // will not have changed.
 240 void GuiCitation::updateControls(BiblioInfo const & bi)
 241 {
 242         QModelIndex idx = selectionManager->getSelectedIndex();
 243         updateInfo(bi, idx);
 244         selectionManager->update();
 245 }
 246
 247
 248 void GuiCitation::updateFormatting(CitationStyle currentStyle)
 249 {
 250         BufferParams const bp = documentBuffer().params();
 251         bool const force = currentStyle.forceUpperCase;
 252         bool const starred = currentStyle.hasStarredVersion;
 253         bool const full = starred && bp.fullAuthorList();
 254         bool const textbefore = currentStyle.textBefore;
 255         bool const textafter = currentStyle.textAfter;
 256
 257         bool const haveSelection =
 258                 selectedLV->model()->rowCount() > 0;
 259
 260         forceuppercaseCB->setEnabled(force && haveSelection);
 261         starredCB->setEnabled(full && haveSelection);
 262         textBeforeED->setEnabled(textbefore && haveSelection);
 263         textBeforeLA->setEnabled(textbefore && haveSelection);
 264         textAfterED->setEnabled(textafter && haveSelection);
 265         textAfterLA->setEnabled(textafter && haveSelection);
 266         citationStyleCO->setEnabled(haveSelection);
 267         citationStyleLA->setEnabled(haveSelection);
 268
 269         // Check if we have a custom string/tooltip for the starred version
 270         if (starred && !currentStyle.stardesc.empty()) {
 271                 string val =
 272                         bp.documentClass().getCiteMacro(bp.citeEngineType(), currentStyle.stardesc);
 273                 docstring guistring;
 274                 if (!val.empty()) {
 275                         guistring = translateIfPossible(from_utf8(val));
 276                         starredCB->setText(toqstr(guistring));
 277                         starredCB->setEnabled(haveSelection);
 278                 }
 279                 if (!currentStyle.startooltip.empty()) {
 280                         val = bp.documentClass().getCiteMacro(bp.citeEngineType(),
 281                                                               currentStyle.startooltip);
 282                         if (!val.empty())
 283                                 guistring = translateIfPossible(from_utf8(val));
 284                 }
 285                 // Tooltip might also be empty
 286                 starredCB->setToolTip(toqstr(guistring));
 287         } else {
 288                 // This is the default meaning of the starred commands
 289                 starredCB->setText(qt_("All aut&hors"));
 290                 starredCB->setToolTip(qt_("Always list all authors (rather than using \"et al.\")"));
 291         }
 292 }
 293
 294
 295 // Update the styles for the style combo, citationStyleCO, and mark the
 296 // settings as changed. Called upon changing the cited keys (including
 297 // merely reordering the keys) or editing the text before/after fields.
 298 void GuiCitation::updateStyles()
 299 {
 300         BiblioInfo const & bi = bibInfo();
 301         updateStyles(bi);
 302         changed();
 303 }
 304
 305
 306 // Update the styles for the style combo, citationStyleCO.
 307 void GuiCitation::updateStyles(BiblioInfo const & bi)
 308 {
 309         QStringList selected_keys = selected_model_.stringList();
 310         int curr = selectedLV->model()->rowCount() - 1;
 311
 312         if (curr < 0 || selected_keys.empty()) {
 313                 citationStyleCO->clear();
 314                 citationStyleCO->setEnabled(false);
 315                 citationStyleLA->setEnabled(false);
 316                 return;
 317         }
 318
 319         static const size_t max_length = 80;
 320         QStringList sty = citationStyles(bi, max_length);
 321
 322         if (sty.isEmpty()) {
 323                 // some error
 324                 citationStyleCO->setEnabled(false);
 325                 citationStyleLA->setEnabled(false);
 326                 citationStyleCO->clear();
 327                 return;
 328         }
 329
 330         citationStyleCO->blockSignals(true);
 331
 332         // save old index
 333         int const curindex = citationStyleCO->currentIndex();
 334         int const oldIndex = (curindex < 0) ? style_ : curindex;
 335         citationStyleCO->clear();
 336         citationStyleCO->insertItems(0, sty);
 337         citationStyleCO->setEnabled(true);
 338         citationStyleLA->setEnabled(true);
 339         // restore old index
 340         if (oldIndex != -1 && oldIndex < citationStyleCO->count())
 341                 citationStyleCO->setCurrentIndex(oldIndex);
 342
 343         citationStyleCO->blockSignals(false);
 344 }
 345
 346
 347 void GuiCitation::fillFields(BiblioInfo const & bi)
 348 {
 349         fieldsCO->blockSignals(true);
 350         int const oldIndex = fieldsCO->currentIndex();
 351         fieldsCO->clear();
 352         QStringList const fields = to_qstring_list(bi.getFields());
 353         fieldsCO->insertItem(0, qt_("All fields"));
 354         fieldsCO->insertItem(1, qt_("Keys"));
 355         fieldsCO->insertItems(2, fields);
 356         if (oldIndex != -1 && oldIndex < fieldsCO->count())
 357                 fieldsCO->setCurrentIndex(oldIndex);
 358         fieldsCO->blockSignals(false);
 359 }
 360
 361
 362 void GuiCitation::fillEntries(BiblioInfo const & bi)
 363 {
 364         entriesCO->blockSignals(true);
 365         int const oldIndex = entriesCO->currentIndex();
 366         entriesCO->clear();
 367         QStringList const entries = to_qstring_list(bi.getEntries());
 368         entriesCO->insertItem(0, qt_("All entry types"));
 369         entriesCO->insertItems(1, entries);
 370         if (oldIndex != -1 && oldIndex < entriesCO->count())
 371                 entriesCO->setCurrentIndex(oldIndex);
 372         entriesCO->blockSignals(false);
 373 }
 374
 375
 376 bool GuiCitation::isSelected(QModelIndex const & idx)
 377 {
 378         QString const str = idx.data().toString();
 379         return selected_model_.stringList().contains(str);
 380 }
 381
 382
 383 void GuiCitation::setButtons()
 384 {
 385         int const srows = selectedLV->model()->rowCount();
 386         applyPB->setEnabled(srows > 0);
 387         okPB->setEnabled(srows > 0);
 388 }
 389
 390
 391 void GuiCitation::updateInfo(BiblioInfo const & bi, QModelIndex const & idx)
 392 {
 393         if (!idx.isValid() || bi.empty()) {
 394                 infoML->document()->clear();
 395                 infoML->setToolTip(qt_("Displays a sketchy preview if a citation is selected above"));
 396                 return;
 397         }
 398
 399         infoML->setToolTip(qt_("Sketchy preview of the selected citation"));
 400         CiteItem ci;
 401         ci.richtext = true;
 402         QString const keytxt = toqstr(
 403                 bi.getInfo(qstring_to_ucs4(idx.data().toString()), documentBuffer(), ci));
 404         infoML->document()->setHtml(keytxt);
 405 }
 406
 407
 408 void GuiCitation::findText(QString const & text, bool reset)
 409 {
 410         //"All Fields" and "Keys" are the first two
 411         int index = fieldsCO->currentIndex() - 2;
 412         BiblioInfo const & bi = bibInfo();
 413         vector<docstring> const & fields = bi.getFields();
 414         docstring field;
 415
 416         if (index <= -1 || index >= int(fields.size()))
 417                 //either "All Fields" or "Keys" or an invalid value
 418                 field = from_ascii("");
 419         else
 420                 field = fields[index];
 421
 422         //Was it "Keys"?
 423         bool const onlyKeys = index == -1;
 424
 425         //"All Entry Types" is first.
 426         index = entriesCO->currentIndex() - 1;
 427         vector<docstring> const & entries = bi.getEntries();
 428         docstring entry_type;
 429         if (index < 0 || index >= int(entries.size()))
 430                 entry_type = from_ascii("");
 431         else
 432                 entry_type = entries[index];
 433
 434         bool const case_sentitive = casesense_->isChecked();
 435         bool const reg_exp = regexp_->isChecked();
 436
 437         findKey(bi, text, onlyKeys, field, entry_type,
 438                        case_sentitive, reg_exp, reset);
 439         //FIXME
 440         //It'd be nice to save and restore the current selection in
 441         //availableLV. Currently, we get an automatic reset, since the
 442         //model is reset.
 443
 444         updateControls(bi);
 445 }
 446
 447
 448 void GuiCitation::on_fieldsCO_currentIndexChanged(int /*index*/)
 449 {
 450         findText(filter_->text(), true);
 451 }
 452
 453
 454 void GuiCitation::on_entriesCO_currentIndexChanged(int /*index*/)
 455 {
 456         findText(filter_->text(), true);
 457 }
 458
 459
 460 void GuiCitation::on_citationStyleCO_currentIndexChanged(int index)
 461 {
 462         if (index >= 0 && index < citationStyleCO->count()) {
 463                 vector<CitationStyle> const & styles = citeStyles_;
 464                 updateFormatting(styles[index]);
 465                 changed();
 466         }
 467 }
 468
 469
 470 void GuiCitation::filterChanged(const QString & text)
 471 {
 472         if (!text.isEmpty()) {
 473                 if (instant_->isChecked())
 474                         findText(filter_->text());
 475                 return;
 476         }
 477         findText(filter_->text());
 478         filter_->setFocus();
 479 }
 480
 481
 482 void GuiCitation::filterPressed()
 483 {
 484         findText(filter_->text(), true);
 485 }
 486
 487
 488 void GuiCitation::resetFilter()
 489 {
 490         filter_->setText(QString());
 491         findText(filter_->text(), true);
 492 }
 493
 494
 495 void GuiCitation::caseChanged()
 496 {
 497         findText(filter_->text());
 498 }
 499
 500
 501 void GuiCitation::regexChanged()
 502 {
 503         findText(filter_->text());
 504 }
 505
 506
 507 void GuiCitation::updateFilterHint()
 508 {
 509         QString const hint = instant_->isChecked() ?
 510                 qt_("Enter string to filter the list of available citations") :
 511                 qt_("Enter string to filter the list of available citations and press <Enter>");
 512         filter_->setToolTip(hint);
 513 }
 514
 515
 516 void GuiCitation::instantChanged(bool checked)
 517 {
 518         if (checked)
 519                 findText(filter_->text(), true);
 520
 521         updateFilterHint();
 522 }
 523
 524
 525 void GuiCitation::changed()
 526 {
 527         setButtons();
 528 }
 529
 530
 531 void GuiCitation::applyParams(int const choice, bool full, bool force,
 532         QString before, QString after)
 533 {
 534         if (cited_keys_.isEmpty())
 535                 return;
 536
 537         vector<CitationStyle> const & styles = citeStyles_;
 538
 539         CitationStyle cs = styles[choice];
 540
 541         if (!cs.textBefore)
 542                 before.clear();
 543         if (!cs.textAfter)
 544                 after.clear();
 545
 546         cs.forceUpperCase &= force;
 547         cs.hasStarredVersion &= full;
 548         string const command = citationStyleToString(cs);
 549
 550         params_.setCmdName(command);
 551         params_["key"] = qstring_to_ucs4(cited_keys_.join(","));
 552         params_["before"] = qstring_to_ucs4(before);
 553         params_["after"] = qstring_to_ucs4(after);
 554         dispatchParams();
 555 }
 556
 557
 558 void GuiCitation::clearSelection()
 559 {
 560         cited_keys_.clear();
 561         selected_model_.setStringList(cited_keys_);
 562 }
 563
 564
 565 void GuiCitation::init()
 566 {
 567         // Make the list of all available bibliography keys
 568         BiblioInfo const & bi = bibInfo();
 569         all_keys_ = to_qstring_list(bi.getKeys());
 570         available_model_.setStringList(all_keys_);
 571
 572         // Ditto for the keys cited in this inset
 573         QString str = toqstr(params_["key"]);
 574         if (str.isEmpty())
 575                 cited_keys_.clear();
 576         else
 577                 cited_keys_ = str.split(",");
 578         selected_model_.setStringList(cited_keys_);
 579
 580         // Initialize the drop downs
 581         fillEntries(bi);
 582         fillFields(bi);
 583
 584         // Initialize the citation formatting
 585         string const & cmd = params_.getCmdName();
 586         CitationStyle const cs =
 587                 citationStyleFromString(cmd, documentBuffer().params());
 588         forceuppercaseCB->setChecked(cs.forceUpperCase);
 589         starredCB->setChecked(cs.hasStarredVersion &&
 590                 documentBuffer().params().fullAuthorList());
 591         textBeforeED->setText(toqstr(params_["before"]));
 592         textAfterED->setText(toqstr(params_["after"]));
 593
 594         // Update the interface
 595         updateControls(bi);
 596         updateStyles(bi);
 597         if (selected_model_.rowCount()) {
 598                 selectedLV->blockSignals(true);
 599                 selectedLV->setFocus();
 600                 QModelIndex idx = selected_model_.index(0, 0);
 601                 selectedLV->selectionModel()->select(idx,
 602                                 QItemSelectionModel::ClearAndSelect);
 603                 selectedLV->blockSignals(false);
 604
 605                 // Find the citation style
 606                 vector<string> const & cmds = citeCmds_;
 607                 vector<string>::const_iterator cit =
 608                         std::find(cmds.begin(), cmds.end(), cs.name);
 609                 int i = 0;
 610                 if (cit != cmds.end())
 611                         i = int(cit - cmds.begin());
 612
 613                 // Set the style combo appropriately
 614                 citationStyleCO->blockSignals(true);
 615                 citationStyleCO->setCurrentIndex(i);
 616                 citationStyleCO->blockSignals(false);
 617                 updateFormatting(citeStyles_[i]);
 618         } else
 619                 availableLV->setFocus();
 620
 621         applyPB->setEnabled(false);
 622         okPB->setEnabled(false);
 623 }
 624
 625
 626 void GuiCitation::findKey(BiblioInfo const & bi,
 627         QString const & str, bool only_keys,
 628         docstring field, docstring entry_type,
 629         bool case_sensitive, bool reg_exp, bool reset)
 630 {
 631         // FIXME THREAD
 632         // This should be moved to a class member.
 633         // Used for optimisation: store last searched string.
 634         static QString last_searched_string;
 635         // Used to disable the above optimisation.
 636         static bool last_case_sensitive;
 637         static bool last_reg_exp;
 638         // Reset last_searched_string in case of changed option.
 639         if (last_case_sensitive != case_sensitive
 640                 || last_reg_exp != reg_exp) {
 641                         LYXERR(Debug::GUI, "GuiCitation::findKey: optimisation disabled!");
 642                 last_searched_string.clear();
 643         }
 644         // save option for next search.
 645         last_case_sensitive = case_sensitive;
 646         last_reg_exp = reg_exp;
 647
 648         Qt::CaseSensitivity qtcase = case_sensitive ?
 649                         Qt::CaseSensitive: Qt::CaseInsensitive;
 650         QStringList keys;
 651         // If new string (str) contains the last searched one...
 652         if (!reset &&
 653                 !last_searched_string.isEmpty() &&
 654                 str.size() > 1 &&
 655                 str.contains(last_searched_string, qtcase))
 656                 // ... then only search within already found list.
 657                 keys = available_model_.stringList();
 658         else
 659                 // ... else search all keys.
 660                 keys = all_keys_;
 661         // save searched string for next search.
 662         last_searched_string = str;
 663
 664         QStringList result;
 665
 666         // First, filter by entry_type, which will be faster than
 667         // what follows, so we may get to do that on less.
 668         vector<docstring> keyVector = to_docstring_vector(keys);
 669         filterByEntryType(bi, keyVector, entry_type);
 670
 671         if (str.isEmpty())
 672                 result = to_qstring_list(keyVector);
 673         else
 674                 result = to_qstring_list(searchKeys(bi, keyVector, only_keys,
 675                         qstring_to_ucs4(str), field, case_sensitive, reg_exp));
 676
 677         available_model_.setStringList(result);
 678 }
 679
 680
 681 QStringList GuiCitation::citationStyles(BiblioInfo const & bi, size_t max_size)
 682 {
 683         vector<docstring> const keys = to_docstring_vector(cited_keys_);
 684         vector<CitationStyle> styles = citeStyles_;
 685         CiteItem ci;
 686         ci.textBefore = qstring_to_ucs4(textBeforeED->text());
 687         ci.textAfter = qstring_to_ucs4(textAfterED->text());
 688         ci.context = CiteItem::Dialog;
 689         ci.max_size = max_size;
 690         vector<docstring> ret = bi.getCiteStrings(keys, styles, documentBuffer(), ci);
 691         return to_qstring_list(ret);
 692 }
 693
 694
 695 void GuiCitation::setCitedKeys()
 696 {
 697         cited_keys_ = selected_model_.stringList();
 698         updateStyles();
 699 }
 700
 701
 702 bool GuiCitation::initialiseParams(string const & data)
 703 {
 704         InsetCommand::string2params(data, params_);
 705         citeCmds_ = documentBuffer().params().citeCommands();
 706         citeStyles_ = documentBuffer().params().citeStyles();
 707         init();
 708         return true;
 709 }
 710
 711
 712 void GuiCitation::clearParams()
 713 {
 714         params_.clear();
 715 }
 716
 717
 718 void GuiCitation::filterByEntryType(BiblioInfo const & bi,
 719         vector<docstring> & keyVector, docstring entry_type)
 720 {
 721         if (entry_type.empty())
 722                 return;
 723
 724         vector<docstring>::iterator it = keyVector.begin();
 725         vector<docstring>::iterator end = keyVector.end();
 726
 727         vector<docstring> result;
 728         for (; it != end; ++it) {
 729                 docstring const key = *it;
 730                 BiblioInfo::const_iterator cit = bi.find(key);
 731                 if (cit == bi.end())
 732                         continue;
 733                 if (cit->second.entryType() == entry_type)
 734                         result.push_back(key);
 735         }
 736         keyVector = result;
 737 }
 738
 739
 740 // Escape special chars.
 741 // All characters are literals except: '.|*?+(){}[]^$\'
 742 // These characters are literals when preceded by a "\", which is done here
 743 // @todo: This function should be moved to support, and then the test in tests
 744 //        should be moved there as well.
 745 static docstring escape_special_chars(docstring const & expr)
 746 {
 747         // Search for all chars '.|*?+(){}[^$]\'
 748         // Note that '[', ']', and '\' must be escaped.
 749         static const lyx::regex reg("[.|*?+(){}^$\\[\\]\\\\]");
 750
 751         // $& is an ECMAScript format expression that expands to all
 752         // of the current match
 753 #ifdef LYX_USE_STD_REGEX
 754         // To prefix a matched expression with a single literal backslash, we
 755         // need to escape it for the C++ compiler and use:
 756         // FIXME: UNICODE
 757         return from_utf8(lyx::regex_replace(to_utf8(expr), reg, string("\\$&")));
 758 #else
 759         // A backslash in the format string starts an escape sequence in boost.
 760         // Thus, to prefix a matched expression with a single literal backslash,
 761         // we need to give two backslashes to the regex engine, and escape both
 762         // for the C++ compiler and use:
 763         // FIXME: UNICODE
 764         return from_utf8(lyx::regex_replace(to_utf8(expr), reg, string("\\\\$&")));
 765 #endif
 766 }
 767
 768
 769 vector<docstring> GuiCitation::searchKeys(BiblioInfo const & bi,
 770         vector<docstring> const & keys_to_search, bool only_keys,
 771         docstring const & search_expression, docstring field,
 772         bool case_sensitive, bool regex)
 773 {
 774         vector<docstring> foundKeys;
 775
 776         docstring expr = trim(search_expression);
 777         if (expr.empty())
 778                 return foundKeys;
 779
 780         if (!regex)
 781                 // We must escape special chars in the search_expr so that
 782                 // it is treated as a simple string by lyx::regex.
 783                 expr = escape_special_chars(expr);
 784
 785         lyx::regex reg_exp;
 786         try {
 787                 reg_exp.assign(to_utf8(expr), case_sensitive ?
 788                         lyx::regex_constants::ECMAScript : lyx::regex_constants::icase);
 789         } catch (lyx::regex_error const & e) {
 790                 // lyx::regex throws an exception if the regular expression is not
 791                 // valid.
 792                 LYXERR(Debug::GUI, e.what());
 793                 return vector<docstring>();
 794         }
 795
 796         vector<docstring>::const_iterator it = keys_to_search.begin();
 797         vector<docstring>::const_iterator end = keys_to_search.end();
 798         for (; it != end; ++it ) {
 799                 BiblioInfo::const_iterator info = bi.find(*it);
 800                 if (info == bi.end())
 801                         continue;
 802
 803                 BibTeXInfo const & kvm = info->second;
 804                 string data;
 805                 if (only_keys)
 806                         data = to_utf8(*it);
 807                 else if (field.empty())
 808                         data = to_utf8(*it) + ' ' + to_utf8(kvm.allData());
 809                 else
 810                         data = to_utf8(kvm[field]);
 811
 812                 if (data.empty())
 813                         continue;
 814
 815                 try {
 816                         if (lyx::regex_search(data, reg_exp))
 817                                 foundKeys.push_back(*it);
 818                 }
 819                 catch (lyx::regex_error const & e) {
 820                         LYXERR(Debug::GUI, e.what());
 821                         return vector<docstring>();
 822                 }
 823         }
 824         return foundKeys;
 825 }
 826
 827
 828 void GuiCitation::dispatchParams()
 829 {
 830         std::string const lfun = InsetCommand::params2string(params_);
 831         dispatch(FuncRequest(getLfun(), lfun));
 832 }
 833
 834
 835 BiblioInfo const & GuiCitation::bibInfo() const
 836 {
 837         Buffer const & buf = documentBuffer();
 838         buf.reloadBibInfoCache();
 839         return buf.masterBibInfo();
 840 }
 841
 842
 843 void GuiCitation::saveSession() const
 844 {
 845         Dialog::saveSession();
 846         QSettings settings;
 847         settings.setValue(
 848                 sessionKey() + "/regex", regexp_->isChecked());
 849         settings.setValue(
 850                 sessionKey() + "/casesensitive", casesense_->isChecked());
 851         settings.setValue(
 852                 sessionKey() + "/autofind", instant_->isChecked());
 853         settings.setValue(
 854                 sessionKey() + "/citestyle", style_);
 855 }
 856
 857
 858 void GuiCitation::restoreSession()
 859 {
 860         Dialog::restoreSession();
 861         QSettings settings;
 862         regexp_->setChecked(settings.value(sessionKey() + "/regex").toBool());
 863         casesense_->setChecked(settings.value(sessionKey() + "/casesensitive").toBool());
 864         instant_->setChecked(settings.value(sessionKey() + "/autofind").toBool());
 865         style_ = settings.value(sessionKey() + "/citestyle").toInt();
 866         updateFilterHint();
 867 }
 868
 869
 870 Dialog * createGuiCitation(GuiView & lv) { return new GuiCitation(lv); }
 871
 872
 873 } // namespace frontend
 874 } // namespace lyx
 875
 876 #include "moc_GuiCitation.cpp"
 877