src/frontends/qt/GuiRef.cpp

   1 /**
   2  * \file GuiRef.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author John Levon
   7  * \author Jürgen Spitzmüller
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "GuiRef.h"
  15
  16 #include "GuiApplication.h"
  17
  18 #include "Buffer.h"
  19 #include "BufferParams.h"
  20 #include "BufferList.h"
  21 #include "BufferView.h"
  22 #include "Cursor.h"
  23 #include "FancyLineEdit.h"
  24 #include "FuncRequest.h"
  25
  26 #include "qt_helpers.h"
  27
  28 #include "insets/InsetRef.h"
  29
  30 #include "support/FileName.h"
  31 #include "support/FileNameList.h"
  32 #include "support/filetools.h" // makeAbsPath, makeDisplayPath
  33
  34 #include <QLineEdit>
  35 #include <QCheckBox>
  36 #include <QTreeWidget>
  37 #include <QTreeWidgetItem>
  38 #include <QPushButton>
  39 #include <QToolTip>
  40 #include <QCloseEvent>
  41 #include <QHeaderView>
  42
  43 using namespace std;
  44 using namespace lyx::support;
  45
  46 namespace lyx {
  47 namespace frontend {
  48
  49 GuiRef::GuiRef(GuiView & lv)
  50         : GuiDialog(lv, "ref", qt_("Cross-reference")),
  51           params_(insetCode("ref"))
  52 {
  53         setupUi(this);
  54
  55         at_ref_ = false;
  56
  57         // The filter bar
  58         filter_ = new FancyLineEdit(this);
  59         filter_->setClearButton(true);
  60         filter_->setPlaceholderText(qt_("All available labels"));
  61         filter_->setToolTip(qt_("Enter string to filter the list of available labels"));
  62 #if (QT_VERSION < 0x050000)
  63         connect(filter_, SIGNAL(downPressed()),
  64                 refsTW, SLOT(setFocus()));
  65 #else
  66         connect(filter_, &FancyLineEdit::downPressed,
  67                 refsTW, [this](){ focusAndHighlight(refsTW); });
  68 #endif
  69
  70         filterBarL->addWidget(filter_, 0);
  71         findKeysLA->setBuddy(filter_);
  72
  73         sortingCO->addItem(qt_("By Occurrence"), "unsorted");
  74         sortingCO->addItem(qt_("Alphabetically (Case-Insensitive)"), "nocase");
  75         sortingCO->addItem(qt_("Alphabetically (Case-Sensitive)"), "case");
  76
  77         buttonBox->button(QDialogButtonBox::Reset)->setText(qt_("&Update"));
  78         buttonBox->button(QDialogButtonBox::Reset)->setToolTip(qt_("Update the label list"));
  79
  80         refsTW->setColumnCount(1);
  81         refsTW->header()->setVisible(false);
  82
  83         connect(this, SIGNAL(rejected()), this, SLOT(dialogRejected()));
  84
  85         connect(typeCO, SIGNAL(activated(int)),
  86                 this, SLOT(changed_adaptor()));
  87         connect(referenceED, SIGNAL(textChanged(QString)),
  88                 this, SLOT(refTextChanged(QString)));
  89         connect(referenceED, SIGNAL(textChanged(QString)),
  90                 this, SLOT(changed_adaptor()));
  91         connect(filter_, SIGNAL(textEdited(QString)),
  92                 this, SLOT(filterLabels()));
  93         connect(filter_, SIGNAL(rightButtonClicked()),
  94                 this, SLOT(resetFilter()));
  95         connect(csFindCB, SIGNAL(clicked()),
  96                 this, SLOT(filterLabels()));
  97         connect(refsTW, SIGNAL(itemClicked(QTreeWidgetItem *, int)),
  98                 this, SLOT(refHighlighted(QTreeWidgetItem *)));
  99         connect(refsTW, SIGNAL(itemSelectionChanged()),
 100                 this, SLOT(selectionChanged()));
 101         connect(refsTW, SIGNAL(itemDoubleClicked(QTreeWidgetItem *, int)),
 102                 this, SLOT(refSelected(QTreeWidgetItem *)));
 103         connect(sortingCO, SIGNAL(activated(int)),
 104                 this, SLOT(sortToggled()));
 105         connect(groupCB, SIGNAL(clicked()),
 106                 this, SLOT(groupToggled()));
 107         connect(gotoPB, SIGNAL(clicked()),
 108                 this, SLOT(gotoClicked()));
 109         connect(bufferCO, SIGNAL(activated(int)),
 110                 this, SLOT(updateClicked()));
 111         connect(pluralCB, SIGNAL(clicked()),
 112                 this, SLOT(changed_adaptor()));
 113         connect(capsCB, SIGNAL(clicked()),
 114                 this, SLOT(changed_adaptor()));
 115         connect(noprefixCB, SIGNAL(clicked()),
 116                 this, SLOT(changed_adaptor()));
 117
 118         enableBoxes();
 119
 120         bc().setPolicy(ButtonPolicy::NoRepeatedApplyReadOnlyPolicy);
 121         bc().setOK(buttonBox->button(QDialogButtonBox::Ok));
 122         bc().setApply(buttonBox->button(QDialogButtonBox::Apply));
 123         bc().setCancel(buttonBox->button(QDialogButtonBox::Cancel));
 124         bc().addReadOnly(typeCO);
 125
 126         restored_buffer_ = -1;
 127         active_buffer_ = -1;
 128
 129         setFocusProxy(filter_);
 130 }
 131
 132
 133 void GuiRef::enableView(bool enable)
 134 {
 135         if (!enable)
 136                 // In the opposite case, updateContents() will be called anyway.
 137                 updateContents();
 138         GuiDialog::enableView(enable);
 139 }
 140
 141
 142 void GuiRef::enableBoxes()
 143 {
 144         QString const reftype =
 145             typeCO->itemData(typeCO->currentIndex()).toString();
 146         bool const isFormatted = (reftype == "formatted");
 147         bool const isLabelOnly = (reftype == "labelonly");
 148         bool const usingRefStyle = buffer().params().use_refstyle;
 149         bool const intext = bufferview()->cursor().inTexted();
 150         pluralCB->setEnabled(intext && isFormatted && usingRefStyle);
 151         capsCB->setEnabled(intext && isFormatted && usingRefStyle);
 152         noprefixCB->setEnabled(intext && isLabelOnly);
 153 }
 154
 155
 156 void GuiRef::changed_adaptor()
 157 {
 158         changed();
 159         enableBoxes();
 160 }
 161
 162
 163 void GuiRef::gotoClicked()
 164 {
 165         // By setting last_reference_, we ensure that the reference
 166         // to which we are going (or from which we are returning) is
 167         // restored in the dialog. It's a bit of a hack, but it works,
 168         // and no-one seems to have any better idea.
 169         bool const toggled =
 170                 last_reference_.isEmpty() || last_reference_.isNull();
 171         if (toggled)
 172                 last_reference_ = referenceED->text();
 173         gotoRef();
 174         if (toggled)
 175                 last_reference_.clear();
 176 }
 177
 178
 179 void GuiRef::selectionChanged()
 180 {
 181         if (isBufferReadonly())
 182                 return;
 183
 184         QList<QTreeWidgetItem *> selections = refsTW->selectedItems();
 185         if (selections.isEmpty())
 186                 return;
 187         QTreeWidgetItem * sel = selections.first();
 188         refHighlighted(sel);
 189 }
 190
 191
 192 void GuiRef::refHighlighted(QTreeWidgetItem * sel)
 193 {
 194         if (sel->childCount() > 0) {
 195                 sel->setExpanded(true);
 196                 return;
 197         }
 198
 199 /*      int const cur_item = refsTW->currentRow();
 200         bool const cur_item_selected = cur_item >= 0 ?
 201                 refsLB->isSelected(cur_item) : false;*/
 202         bool const cur_item_selected = sel->isSelected();
 203
 204         if (cur_item_selected)
 205                 referenceED->setText(sel->text(0));
 206
 207         if (at_ref_)
 208                 gotoRef();
 209         gotoPB->setEnabled(true);
 210         if (!isBufferReadonly())
 211                 typeCO->setEnabled(true);
 212 }
 213
 214
 215 void GuiRef::refTextChanged(QString const & str)
 216 {
 217         gotoPB->setEnabled(!str.isEmpty());
 218         typeCO->setEnabled(!str.isEmpty());
 219         typeLA->setEnabled(!str.isEmpty());
 220 }
 221
 222
 223 void GuiRef::refSelected(QTreeWidgetItem * sel)
 224 {
 225         if (isBufferReadonly())
 226                 return;
 227
 228         if (sel->childCount()) {
 229                 sel->setExpanded(false);
 230                 return;
 231         }
 232
 233 /*      int const cur_item = refsTW->currentRow();
 234         bool const cur_item_selected = cur_item >= 0 ?
 235                 refsLB->isSelected(cur_item) : false;*/
 236         bool const cur_item_selected = sel->isSelected();
 237
 238         if (cur_item_selected)
 239                 referenceED->setText(sel->text(0));
 240         // <enter> or double click, inserts ref and closes dialog
 241         slotOK();
 242 }
 243
 244
 245 void GuiRef::sortToggled()
 246 {
 247         redoRefs();
 248 }
 249
 250
 251 void GuiRef::groupToggled()
 252 {
 253         redoRefs();
 254 }
 255
 256
 257 void GuiRef::on_buttonBox_clicked(QAbstractButton * button)
 258 {
 259         switch (buttonBox->standardButton(button)) {
 260         case QDialogButtonBox::Ok:
 261                 slotOK();
 262                 break;
 263         case QDialogButtonBox::Apply:
 264                 slotApply();
 265                 break;
 266         case QDialogButtonBox::Cancel:
 267                 slotClose();
 268                 resetDialog();
 269                 break;
 270         case QDialogButtonBox::Reset:
 271                 updateClicked();
 272                 break;
 273         default:
 274                 break;
 275         }
 276 }
 277
 278
 279 void GuiRef::updateClicked()
 280 {
 281         updateRefs();
 282 }
 283
 284
 285 void GuiRef::dialogRejected()
 286 {
 287         resetDialog();
 288         // We have to do this manually, instead of calling slotClose(), because
 289         // the dialog has already been made invisible before rejected() triggers.
 290         Dialog::disconnect();
 291 }
 292
 293
 294 void GuiRef::resetDialog()
 295 {
 296         at_ref_ = false;
 297         setGotoRef();
 298 }
 299
 300
 301 void GuiRef::closeEvent(QCloseEvent * e)
 302 {
 303         slotClose();
 304         resetDialog();
 305         e->accept();
 306 }
 307
 308
 309 void GuiRef::updateContents()
 310 {
 311         QString const orig_type =
 312                 typeCO->itemData(typeCO->currentIndex()).toString();
 313
 314         referenceED->clear();
 315         typeCO->clear();
 316
 317         // FIXME Bring InsetMathRef on par with InsetRef
 318         // (see #11104)
 319         typeCO->addItem(qt_("<reference>"), "ref");
 320         typeCO->addItem(qt_("(<reference>)"), "eqref");
 321         typeCO->addItem(qt_("<page>"), "pageref");
 322         typeCO->addItem(qt_("on page <page>"), "vpageref");
 323         typeCO->addItem(qt_("<reference> on page <page>"), "vref");
 324         typeCO->addItem(qt_("Textual reference"), "nameref");
 325         typeCO->addItem(qt_("Formatted reference"), "formatted");
 326         typeCO->addItem(qt_("Label only"), "labelonly");
 327
 328         referenceED->setText(toqstr(params_["reference"]));
 329
 330         // restore type settings for new insets
 331         bool const new_inset = params_["reference"].empty();
 332         if (new_inset) {
 333                 int index = typeCO->findData(orig_type);
 334                 if (index == -1)
 335                         index = 0;
 336                 typeCO->setCurrentIndex(index);
 337         }
 338         else
 339                 typeCO->setCurrentIndex(
 340                         typeCO->findData(toqstr(params_.getCmdName())));
 341         typeCO->setEnabled(!isBufferReadonly());
 342
 343         pluralCB->setChecked(params_["plural"] == "true");
 344         capsCB->setChecked(params_["caps"] == "true");
 345         noprefixCB->setChecked(params_["noprefix"] == "true");
 346
 347         // insert buffer list
 348         bufferCO->clear();
 349         FileNameList const buffers(theBufferList().fileNames());
 350         for (FileNameList::const_iterator it = buffers.begin();
 351              it != buffers.end(); ++it) {
 352                 bufferCO->addItem(toqstr(makeDisplayPath(it->absFileName())));
 353         }
 354
 355         int const thebuffer = theBufferList().bufferNum(buffer().fileName());
 356         // restore the buffer combo setting for new insets
 357         if (new_inset && restored_buffer_ != -1
 358             && restored_buffer_ < bufferCO->count() && thebuffer == active_buffer_)
 359                 bufferCO->setCurrentIndex(restored_buffer_);
 360         else {
 361                 int const num = theBufferList().bufferNum(buffer().fileName());
 362                 bufferCO->setCurrentIndex(num);
 363                 if (thebuffer != active_buffer_)
 364                         restored_buffer_ = num;
 365         }
 366         active_buffer_ = thebuffer;
 367
 368         updateRefs();
 369         enableBoxes();
 370         // Activate OK/Apply buttons if the users inserts a new ref
 371         // and we have a valid pre-setting.
 372         bc().setValid(isValid() && new_inset);
 373 }
 374
 375
 376 void GuiRef::applyView()
 377 {
 378         last_reference_ = referenceED->text();
 379
 380         params_.setCmdName(fromqstr(typeCO->itemData(typeCO->currentIndex()).toString()));
 381         params_["reference"] = qstring_to_ucs4(last_reference_);
 382         params_["plural"] = pluralCB->isChecked() ?
 383               from_ascii("true") : from_ascii("false");
 384         params_["caps"] = capsCB->isChecked() ?
 385               from_ascii("true") : from_ascii("false");
 386         params_["noprefix"] = noprefixCB->isChecked() ?
 387               from_ascii("true") : from_ascii("false");
 388         restored_buffer_ = bufferCO->currentIndex();
 389 }
 390
 391
 392 void GuiRef::setGoBack()
 393 {
 394         gotoPB->setText(qt_("&Go Back"));
 395         gotoPB->setToolTip(qt_("Jump back to the original cursor location"));
 396 }
 397
 398
 399 void GuiRef::setGotoRef()
 400 {
 401         gotoPB->setText(qt_("&Go to Label"));
 402         gotoPB->setToolTip(qt_("Jump to the selected label"));
 403 }
 404
 405
 406 void GuiRef::gotoRef()
 407 {
 408         string ref = fromqstr(referenceED->text());
 409
 410         if (at_ref_) {
 411                 // go back
 412                 setGotoRef();
 413                 gotoBookmark();
 414         } else {
 415                 // go to the ref
 416                 setGoBack();
 417                 gotoRef(ref);
 418         }
 419         at_ref_ = !at_ref_;
 420 }
 421
 422 inline bool caseInsensitiveLessThan(QString const & s1, QString const & s2)
 423 {
 424         return s1.toLower() < s2.toLower();
 425 }
 426
 427
 428 void GuiRef::redoRefs()
 429 {
 430         // Prevent these widgets from emitting any signals whilst
 431         // we modify their state.
 432         refsTW->blockSignals(true);
 433         referenceED->blockSignals(true);
 434         refsTW->setUpdatesEnabled(false);
 435
 436         refsTW->clear();
 437
 438         // need this because Qt will send a highlight() here for
 439         // the first item inserted
 440         QString const oldSelection(referenceED->text());
 441
 442         QStringList refsStrings;
 443         QStringList refsCategories;
 444         vector<docstring>::const_iterator iter;
 445         bool noprefix = false;
 446         for (iter = refs_.begin(); iter != refs_.end(); ++iter) {
 447                 QString const lab = toqstr(*iter);
 448                 refsStrings.append(lab);
 449                 if (groupCB->isChecked()) {
 450                         if (lab.contains(":")) {
 451                                 QString const pref = lab.split(':')[0];
 452                                 if (!refsCategories.contains(pref)) {
 453                                         if (!pref.isEmpty())
 454                                                 refsCategories.append(pref);
 455                                         else
 456                                                 noprefix = true;
 457                                 }
 458                         }
 459                         else
 460                                 noprefix = true;
 461                 }
 462         }
 463         // sort categories case-intensively
 464         sort(refsCategories.begin(), refsCategories.end(),
 465                   caseInsensitiveLessThan /*defined above*/);
 466         if (noprefix)
 467                 refsCategories.insert(0, qt_("<No prefix>"));
 468
 469         QString const sort_method = sortingCO->isEnabled() ?
 470                                         sortingCO->itemData(sortingCO->currentIndex()).toString()
 471                                         : QString();
 472         if (sort_method == "nocase")
 473                 sort(refsStrings.begin(), refsStrings.end(),
 474                           caseInsensitiveLessThan /*defined above*/);
 475         else if (sort_method == "case")
 476                 sort(refsStrings.begin(), refsStrings.end());
 477
 478         if (groupCB->isChecked()) {
 479                 QList<QTreeWidgetItem *> refsCats;
 480                 for (int i = 0; i < refsCategories.size(); ++i) {
 481                         QString const & cat = refsCategories.at(i);
 482                         QTreeWidgetItem * item = new QTreeWidgetItem(refsTW);
 483                         item->setText(0, cat);
 484                         for (int j = 0; j < refsStrings.size(); ++j) {
 485                                 QString const & ref = refsStrings.at(j);
 486                                 if ((ref.startsWith(cat + QString(":")))
 487                                     || (cat == qt_("<No prefix>")
 488                                        && (!ref.mid(1).contains(":") || ref.left(1).contains(":")))) {
 489                                                 QTreeWidgetItem * child =
 490                                                         new QTreeWidgetItem(item);
 491                                                 child->setText(0, ref);
 492                                                 item->addChild(child);
 493                                 }
 494                         }
 495                         refsCats.append(item);
 496                 }
 497                 refsTW->addTopLevelItems(refsCats);
 498         } else {
 499                 QList<QTreeWidgetItem *> refsItems;
 500                 for (int i = 0; i < refsStrings.size(); ++i) {
 501                         QTreeWidgetItem * item = new QTreeWidgetItem(refsTW);
 502                         item->setText(0, refsStrings.at(i));
 503                         refsItems.append(item);
 504                 }
 505                 refsTW->addTopLevelItems(refsItems);
 506         }
 507
 508         // restore the last selection or, for new insets, highlight
 509         // the previous selection
 510         if (!oldSelection.isEmpty() || !last_reference_.isEmpty()) {
 511                 bool const newInset = oldSelection.isEmpty();
 512                 QString textToFind = newInset ? last_reference_ : oldSelection;
 513                 referenceED->setText(textToFind);
 514                 last_reference_.clear();
 515                 QTreeWidgetItemIterator it(refsTW);
 516                 while (*it) {
 517                         if ((*it)->text(0) == textToFind) {
 518                                 refsTW->setCurrentItem(*it);
 519                                 (*it)->setSelected(true);
 520                                 //Make sure selected item is visible
 521                                 refsTW->scrollToItem(*it);
 522                                 last_reference_ = textToFind;
 523                                 break;
 524                         }
 525                         ++it;
 526                 }
 527         }
 528         refsTW->setUpdatesEnabled(true);
 529         refsTW->update();
 530
 531         // redo filter
 532         filterLabels();
 533
 534         // Re-activate the emission of signals by these widgets.
 535         refsTW->blockSignals(false);
 536         referenceED->blockSignals(false);
 537
 538         gotoPB->setEnabled(!referenceED->text().isEmpty());
 539         typeCO->setEnabled(!referenceED->text().isEmpty());
 540         typeLA->setEnabled(!referenceED->text().isEmpty());
 541 }
 542
 543
 544 void GuiRef::updateRefs()
 545 {
 546         refs_.clear();
 547         int const the_buffer = bufferCO->currentIndex();
 548         if (the_buffer != -1) {
 549                 FileNameList const names(theBufferList().fileNames());
 550                 FileName const & name = names[the_buffer];
 551                 Buffer const * buf = theBufferList().getBuffer(name);
 552                 buf->getLabelList(refs_);
 553         }
 554         sortingCO->setEnabled(!refs_.empty());
 555         refsTW->setEnabled(!refs_.empty());
 556         groupCB->setEnabled(!refs_.empty());
 557         redoRefs();
 558 }
 559
 560
 561 bool GuiRef::isValid()
 562 {
 563         return !referenceED->text().isEmpty();
 564 }
 565
 566
 567 void GuiRef::gotoRef(string const & ref)
 568 {
 569         dispatch(FuncRequest(LFUN_BOOKMARK_SAVE, "0"));
 570         dispatch(FuncRequest(LFUN_LABEL_GOTO, ref));
 571 }
 572
 573
 574 void GuiRef::gotoBookmark()
 575 {
 576         dispatch(FuncRequest(LFUN_BOOKMARK_GOTO, "0"));
 577 }
 578
 579
 580 void GuiRef::filterLabels()
 581 {
 582         Qt::CaseSensitivity cs = csFindCB->isChecked() ?
 583                 Qt::CaseSensitive : Qt::CaseInsensitive;
 584         QTreeWidgetItemIterator it(refsTW);
 585         while (*it) {
 586                 (*it)->setHidden(
 587                         (*it)->childCount() == 0
 588                         && !(*it)->text(0).contains(filter_->text(), cs)
 589                 );
 590                 ++it;
 591         }
 592 }
 593
 594
 595 void GuiRef::resetFilter()
 596 {
 597         filter_->setText(QString());
 598         filterLabels();
 599 }
 600
 601
 602 bool GuiRef::initialiseParams(std::string const & sdata)
 603 {
 604         InsetCommand::string2params(sdata, params_);
 605         return true;
 606 }
 607
 608
 609 void GuiRef::dispatchParams()
 610 {
 611         std::string const lfun = InsetCommand::params2string(params_);
 612         dispatch(FuncRequest(getLfun(), lfun));
 613         connectToNewInset();
 614 }
 615
 616
 617 } // namespace frontend
 618 } // namespace lyx
 619
 620 #include "moc_GuiRef.cpp"