src/frontends/qt4/LayoutBox.cpp

   1 /**
   2  * \file qt4/LayoutBox.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Lars Gullik Bjønnes
   7  * \author John Levon
   8  * \author Jean-Marc Lasgouttes
   9  * \author Angus Leeming
  10  * \author Stefan Schimanski
  11  * \author Abdelrazak Younes
  12  *
  13  * Full author contact details are available in file CREDITS.
  14  */
  15
  16 #include <config.h>
  17
  18 #include "LayoutBox.h"
  19
  20 #include "Action.h"
  21 #include "GuiView.h"
  22 #include "qt_helpers.h"
  23 #include "Toolbars.h"
  24
  25 #include "Buffer.h"
  26 #include "BufferParams.h"
  27 #include "BufferView.h"
  28 #include "Cursor.h"
  29 #include "FuncRequest.h"
  30 #include "FuncStatus.h"
  31 #include "Layout.h"
  32 #include "LyXFunc.h"
  33 #include "LyXRC.h"
  34 #include "Paragraph.h"
  35 #include "TextClass.h"
  36
  37 #include "insets/InsetText.h"
  38
  39 #include "support/debug.h"
  40 #include "support/filetools.h"
  41 #include "support/gettext.h"
  42 #include "support/lstrings.h"
  43
  44 #include <QAbstractItemDelegate>
  45 #include <QAbstractTextDocumentLayout>
  46 #include <QApplication>
  47 #include <QComboBox>
  48 #include <QFontMetrics>
  49 #include <QHeaderView>
  50 #include <QItemDelegate>
  51 #include <QKeyEvent>
  52 #include <QList>
  53 #include <QListView>
  54 #include <QPainter>
  55 #include <QPixmap>
  56 #include <QSettings>
  57 #include <QSortFilterProxyModel>
  58 #include <QStandardItem>
  59 #include <QStandardItemModel>
  60 #include <QString>
  61 #include <QTextDocument>
  62 #include <QTextFrame>
  63 #include <QToolBar>
  64 #include <QVariant>
  65
  66 #include "support/lassert.h"
  67
  68 using namespace std;
  69 using namespace lyx::support;
  70
  71 namespace lyx {
  72 namespace frontend {
  73
  74
  75 class LayoutItemDelegate : public QItemDelegate {
  76 public:
  77         ///
  78         explicit LayoutItemDelegate(LayoutBox * layout)
  79                 : QItemDelegate(layout), layout_(layout)
  80         {}
  81         ///
  82         void paint(QPainter * painter, QStyleOptionViewItem const & option,
  83                 QModelIndex const & index) const;
  84         ///
  85         void drawDisplay(QPainter * painter, QStyleOptionViewItem const & opt,
  86                 const QRect & /*rect*/, const QString & text ) const;
  87         ///
  88         QSize sizeHint(QStyleOptionViewItem const & opt,
  89                 QModelIndex const & index) const;
  90
  91 private:
  92         ///
  93         void drawCategoryHeader(QPainter * painter, QStyleOptionViewItem const & opt,
  94                 QString const & category) const;
  95         ///
  96         QString underlineFilter(QString const & s) const;
  97         ///
  98         LayoutBox * layout_;
  99 };
 100
 101
 102 class GuiLayoutFilterModel : public QSortFilterProxyModel {
 103 public:
 104         ///
 105         GuiLayoutFilterModel(QObject * parent = 0)
 106                 : QSortFilterProxyModel(parent)
 107         {}
 108
 109         ///
 110         void triggerLayoutChange()
 111         {
 112                 layoutAboutToBeChanged();
 113                 layoutChanged();
 114         }
 115 };
 116
 117
 118 /////////////////////////////////////////////////////////////////////
 119 //
 120 // LayoutBox::Private
 121 //
 122 /////////////////////////////////////////////////////////////////////
 123
 124 struct LayoutBox::Private
 125 {
 126         Private(LayoutBox * parent, GuiView & gv) : p(parent), owner_(gv),
 127                 lastSel_(-1), visibleCategories_(0), inShowPopup_(false),
 128                 layoutItemDelegate_(new LayoutItemDelegate(parent)),
 129                 // set the layout model with two columns
 130                 // 1st: translated layout names
 131                 // 2nd: raw layout names
 132                 model_(new QStandardItemModel(0, 2, p)),
 133                 filterModel_(new GuiLayoutFilterModel(p))
 134         {
 135                 filterModel_->setSourceModel(model_);
 136         }
 137
 138         void resetFilter() { setFilter(QString()); }
 139         ///
 140         void setFilter(QString const & s);
 141         ///
 142         void countCategories();
 143         ///
 144         LayoutBox * p;
 145         ///
 146         GuiView & owner_;
 147         ///
 148         DocumentClass const * text_class_;
 149         ///
 150         Inset const * inset_;
 151
 152         /// the layout model: 1st column translated, 2nd column raw layout name
 153         QStandardItemModel * model_;
 154         /// the proxy model filtering \c model_
 155         GuiLayoutFilterModel * filterModel_;
 156         /// the (model-) index of the last successful selection
 157         int lastSel_;
 158         /// the character filter
 159         QString filter_;
 160         ///
 161         LayoutItemDelegate * layoutItemDelegate_;
 162         ///
 163         unsigned visibleCategories_;
 164         ///
 165         bool inShowPopup_;
 166 };
 167
 168
 169 static QString category(QAbstractItemModel const & model, int row)
 170 {
 171         return model.data(model.index(row, 2), Qt::DisplayRole).toString();
 172 }
 173
 174
 175 static int headerHeight(QStyleOptionViewItem const & opt)
 176 {
 177         return opt.fontMetrics.height() * 8 / 10;
 178 }
 179
 180
 181 void LayoutItemDelegate::paint(QPainter * painter, QStyleOptionViewItem const & option,
 182                                                            QModelIndex const & index) const
 183 {
 184         QStyleOptionViewItem opt = option;
 185
 186         // default background
 187         painter->fillRect(opt.rect, opt.palette.color(QPalette::Base));
 188
 189         // category header?
 190         if (lyxrc.group_layouts) {
 191                 QSortFilterProxyModel const * model =
 192                         static_cast<QSortFilterProxyModel const *>(index.model());
 193
 194                 QString stdCat = category(*model->sourceModel(), 0);
 195                 QString cat = category(*index.model(), index.row());
 196
 197                 // not the standard layout and not the same as in the previous line?
 198                 if (stdCat != cat
 199                         && (index.row() == 0 || cat != category(*index.model(), index.row() - 1))) {
 200                         painter->save();
 201
 202                         // draw unselected background
 203                         QStyle::State state = opt.state;
 204                         opt.state = opt.state & ~QStyle::State_Selected;
 205                         drawBackground(painter, opt, index);
 206                         opt.state = state;
 207
 208                         // draw category header
 209                         drawCategoryHeader(painter, opt,
 210                                 category(*index.model(), index.row()));
 211
 212                         // move rect down below header
 213                         opt.rect.setTop(opt.rect.top() + headerHeight(opt));
 214
 215                         painter->restore();
 216                 }
 217         }
 218
 219         QItemDelegate::paint(painter, opt, index);
 220 }
 221
 222
 223 void LayoutItemDelegate::drawDisplay(QPainter * painter, QStyleOptionViewItem const & opt,
 224                                                                          const QRect & /*rect*/, const QString & text ) const
 225 {
 226         QString utext = underlineFilter(text);
 227
 228         // Draw the rich text.
 229         painter->save();
 230         QColor col = opt.palette.text().color();
 231         if (opt.state & QStyle::State_Selected)
 232                 col = opt.palette.highlightedText().color();
 233         QAbstractTextDocumentLayout::PaintContext context;
 234         context.palette.setColor(QPalette::Text, col);
 235
 236         QTextDocument doc;
 237         doc.setDefaultFont(opt.font);
 238         doc.setHtml(utext);
 239
 240         QTextFrameFormat fmt = doc.rootFrame()->frameFormat();
 241         fmt.setMargin(0);
 242         doc.rootFrame()->setFrameFormat(fmt);
 243
 244         painter->translate(opt.rect.x() + 5,
 245                 opt.rect.y() + (opt.rect.height() - opt.fontMetrics.height()) / 2);
 246         doc.documentLayout()->draw(painter, context);
 247         painter->restore();
 248 }
 249
 250
 251 QSize LayoutItemDelegate::sizeHint(QStyleOptionViewItem const & opt,
 252                                                                    QModelIndex const & index) const
 253 {
 254         QSortFilterProxyModel const * model =
 255                 static_cast<QSortFilterProxyModel const *>(index.model());
 256         QSize size = QItemDelegate::sizeHint(opt, index);
 257
 258         /// QComboBox uses the first row height to estimate the
 259         /// complete popup height during QComboBox::showPopup().
 260         /// To avoid scrolling we have to sneak in space for the headers.
 261         /// So we tweak this value accordingly. It's not nice, but the
 262         /// only possible way it seems.
 263         if (lyxrc.group_layouts && index.row() == 0 && layout_->d->inShowPopup_) {
 264                 int itemHeight = size.height();
 265
 266                 // we have to show \c cats many headers:
 267                 unsigned cats = layout_->d->visibleCategories_;
 268
 269                 // and we have \c n items to distribute the needed space over
 270                 unsigned n = layout_->model()->rowCount();
 271
 272                 // so the needed average height (rounded upwards) is:
 273                 size.setHeight((headerHeight(opt) * cats + itemHeight * n + n - 1) / n);
 274                 return size;
 275         }
 276
 277         // Add space for the category headers here?
 278         // Not for the standard layout though.
 279         QString stdCat = category(*model->sourceModel(), 0);
 280         QString cat = category(*index.model(), index.row());
 281         if (lyxrc.group_layouts && stdCat != cat
 282                 && (index.row() == 0 || cat != category(*index.model(), index.row() - 1))) {
 283                 size.setHeight(size.height() + headerHeight(opt));
 284         }
 285
 286         return size;
 287 }
 288
 289
 290 void LayoutItemDelegate::drawCategoryHeader(QPainter * painter, QStyleOptionViewItem const & opt,
 291                                                                                         QString const & category) const
 292 {
 293         // slightly blended color
 294         QColor lcol = opt.palette.text().color();
 295         lcol.setAlpha(127);
 296         painter->setPen(lcol);
 297
 298         // set 80% scaled, bold font
 299         QFont font = opt.font;
 300         font.setBold(true);
 301         font.setWeight(QFont::Black);
 302         font.setPointSize(opt.font.pointSize() * 8 / 10);
 303         painter->setFont(font);
 304
 305         // draw the centered text
 306         QFontMetrics fm(font);
 307         int w = fm.width(category);
 308         int x = opt.rect.x() + (opt.rect.width() - w) / 2;
 309         int y = opt.rect.y() + fm.ascent();
 310         int left = x;
 311         int right = x + w;
 312         painter->drawText(x, y, category);
 313
 314         // the vertical position of the line: middle of lower case chars
 315         int ymid = y - 1 - fm.xHeight() / 2; // -1 for the baseline
 316
 317         // draw the horizontal line
 318         if (!category.isEmpty()) {
 319                 painter->drawLine(opt.rect.x(), ymid, left - 1, ymid);
 320                 painter->drawLine(right + 1, ymid, opt.rect.right(), ymid);
 321         } else
 322                 painter->drawLine(opt.rect.x(), ymid, opt.rect.right(), ymid);
 323 }
 324
 325
 326 QString LayoutItemDelegate::underlineFilter(QString const & s) const
 327 {
 328         QString const & f = layout_->filter();
 329         if (f.isEmpty())
 330                 return s;
 331
 332         // step through data item and put "(x)" for every matching character
 333         QString r;
 334         int lastp = -1;
 335         layout_->filter();
 336         for (int i = 0; i < f.length(); ++i) {
 337                 int p = s.indexOf(f[i], lastp + 1, Qt::CaseInsensitive);
 338                 LASSERT(p != -1, /**/);
 339                 if (lastp == p - 1 && lastp != -1) {
 340                         // remove ")" and append "x)"
 341                         r = r.left(r.length() - 4) + s[p] + "</u>";
 342                 } else {
 343                         // append "(x)"
 344                         r += s.mid(lastp + 1, p - lastp - 1);
 345                         r += QString("<u>") + s[p] + "</u>";
 346                 }
 347                 lastp = p;
 348         }
 349         r += s.mid(lastp + 1);
 350         return r;
 351 }
 352
 353
 354 static QString charFilterRegExp(QString const & filter)
 355 {
 356         QString re;
 357         for (int i = 0; i < filter.length(); ++i) {
 358                 QChar c = filter[i];
 359                 if (c.isLower())
 360                         re += ".*[" + QRegExp::escape(c) + QRegExp::escape(c.toUpper()) + "]";
 361                 else
 362                         re += ".*" + QRegExp::escape(c);
 363         }
 364         return re;
 365 }
 366
 367
 368 void LayoutBox::Private::setFilter(QString const & s)
 369 {
 370         bool enabled = p->view()->updatesEnabled();
 371         p->view()->setUpdatesEnabled(false);
 372
 373         // remember old selection
 374         int sel = p->currentIndex();
 375         if (sel != -1)
 376                 lastSel_ = filterModel_->mapToSource(filterModel_->index(sel, 0)).row();
 377
 378         filter_ = s;
 379         filterModel_->setFilterRegExp(charFilterRegExp(filter_));
 380         countCategories();
 381
 382         // restore old selection
 383         if (lastSel_ != -1) {
 384                 QModelIndex i = filterModel_->mapFromSource(model_->index(lastSel_, 0));
 385                 if (i.isValid())
 386                         p->setCurrentIndex(i.row());
 387         }
 388
 389         // Workaround to resize to content size
 390         // FIXME: There must be a better way. The QComboBox::AdjustToContents)
 391         //        does not help.
 392         if (p->view()->isVisible()) {
 393                 // call QComboBox::showPopup. But set the inShowPopup_ flag to switch on
 394                 // the hack in the item delegate to make space for the headers.
 395                 // We do not call our implementation of showPopup because that
 396                 // would reset the filter again. This is only needed if the user clicks
 397                 // on the QComboBox.
 398                 LASSERT(!inShowPopup_, /**/);
 399                 inShowPopup_ = true;
 400                 p->showPopup();
 401                 inShowPopup_ = false;
 402
 403                 // The item delegate hack is off again. So trigger a relayout of the popup.
 404                 filterModel_->triggerLayoutChange();
 405
 406                 if (!s.isEmpty())
 407                         owner_.message(bformat(_("Filtering layouts with \"%1$s\". "
 408                                                  "Press ESC to remove filter."),
 409                                                qstring_to_ucs4(s)));
 410                 else
 411                         owner_.message(_("Enter characters to filter the layout list."));
 412         }
 413
 414         p->view()->setUpdatesEnabled(enabled);
 415 }
 416
 417
 418 LayoutBox::LayoutBox(QToolBar * bar, GuiView & owner)
 419         : d(new Private(this, owner))
 420 {
 421         setSizeAdjustPolicy(QComboBox::AdjustToContents);
 422         setFocusPolicy(Qt::ClickFocus);
 423         setMinimumWidth(sizeHint().width());
 424         setMaxVisibleItems(100);
 425
 426         setModel(d->filterModel_);
 427
 428         // for the filtering we have to intercept characters
 429         view()->installEventFilter(this);
 430         view()->setItemDelegateForColumn(0, d->layoutItemDelegate_);
 431
 432         QObject::connect(this, SIGNAL(activated(int)),
 433                 this, SLOT(selected(int)));
 434         QObject::connect(bar, SIGNAL(iconSizeChanged(QSize)),
 435                 this, SLOT(setIconSize(QSize)));
 436
 437         d->owner_.setLayoutDialog(this);
 438         updateContents(true);
 439 }
 440
 441
 442 void LayoutBox::Private::countCategories()
 443 {
 444         int n = filterModel_->rowCount();
 445         visibleCategories_ = 0;
 446         if (n == 0 || !lyxrc.group_layouts)
 447                 return;
 448
 449         // skip the "Standard" category
 450         QString prevCat = model_->index(0, 2).data().toString();
 451
 452         // count categories
 453         for (int i = 0; i < n; ++i) {
 454                 QString cat = filterModel_->index(i, 2).data().toString();
 455                 if (cat != prevCat)
 456                         ++visibleCategories_;
 457                 prevCat = cat;
 458         }
 459 }
 460
 461
 462 void LayoutBox::showPopup()
 463 {
 464         d->owner_.message(_("Enter characters to filter the layout list."));
 465
 466         bool enabled = view()->updatesEnabled();
 467         view()->setUpdatesEnabled(false);
 468
 469         d->resetFilter();
 470
 471         // call QComboBox::showPopup. But set the inShowPopup_ flag to switch on
 472         // the hack in the item delegate to make space for the headers.
 473         LASSERT(!d->inShowPopup_, /**/);
 474         d->inShowPopup_ = true;
 475         QComboBox::showPopup();
 476         d->inShowPopup_ = false;
 477
 478         // The item delegate hack is off again. So trigger a relayout of the popup.
 479         d->filterModel_->triggerLayoutChange();
 480
 481         view()->setUpdatesEnabled(enabled);
 482 }
 483
 484
 485 bool LayoutBox::eventFilter(QObject * o, QEvent * e)
 486 {
 487         if (e->type() != QEvent::KeyPress)
 488                 return QComboBox::eventFilter(o, e);
 489
 490         QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 491         bool modified = (ke->modifiers() == Qt::ControlModifier)
 492                 || (ke->modifiers() == Qt::AltModifier)
 493                 || (ke->modifiers() == Qt::MetaModifier);
 494
 495         switch (ke->key()) {
 496         case Qt::Key_Escape:
 497                 if (!modified && !d->filter_.isEmpty()) {
 498                         d->resetFilter();
 499                         return true;
 500                 }
 501                 break;
 502         case Qt::Key_Backspace:
 503                 if (!modified) {
 504                         // cut off one character
 505                         d->setFilter(d->filter_.left(d->filter_.length() - 1));
 506                 }
 507                 break;
 508         default:
 509                 if (modified || ke->text().isEmpty())
 510                         break;
 511                 // find chars for the filter string
 512                 QString s;
 513                 for (int i = 0; i < ke->text().length(); ++i) {
 514                         QChar c = ke->text()[i];
 515                         if (c.isLetterOrNumber()
 516                             || c.isSymbol()
 517                             || c.isPunct()
 518                             || c.category() == QChar::Separator_Space) {
 519                                 s += c;
 520                         }
 521                 }
 522                 if (!s.isEmpty()) {
 523                         // append new chars to the filter string
 524                         d->setFilter(d->filter_ + s);
 525                         return true;
 526                 }
 527                 break;
 528         }
 529
 530         return QComboBox::eventFilter(o, e);
 531 }
 532
 533
 534 void LayoutBox::setIconSize(QSize size)
 535 {
 536 #ifdef Q_WS_MACX
 537         bool small = size.height() < 20;
 538         setAttribute(Qt::WA_MacSmallSize, small);
 539         setAttribute(Qt::WA_MacNormalSize, !small);
 540 #else
 541         (void)size; // suppress warning
 542 #endif
 543 }
 544
 545
 546 void LayoutBox::set(docstring const & layout)
 547 {
 548         d->resetFilter();
 549
 550         if (!d->text_class_)
 551                 return;
 552
 553         Layout const & lay = (*d->text_class_)[layout];
 554         QString newLayout = toqstr(lay.name());
 555
 556         // If the layout is obsolete, use the new one instead.
 557         docstring const & obs = lay.obsoleted_by();
 558         if (!obs.empty())
 559                 newLayout = toqstr(obs);
 560
 561         int const curItem = currentIndex();
 562         QModelIndex const mindex =
 563                 d->filterModel_->mapToSource(d->filterModel_->index(curItem, 1));
 564         QString const & currentLayout = d->model_->itemFromIndex(mindex)->text();
 565         if (newLayout == currentLayout) {
 566                 LYXERR(Debug::GUI, "Already had " << newLayout << " selected.");
 567                 return;
 568         }
 569
 570         QList<QStandardItem *> r = d->model_->findItems(newLayout, Qt::MatchExactly, 1);
 571         if (r.empty()) {
 572                 LYXERR0("Trying to select non existent layout type " << newLayout);
 573                 return;
 574         }
 575
 576         setCurrentIndex(d->filterModel_->mapFromSource(r.first()->index()).row());
 577 }
 578
 579
 580 void LayoutBox::addItemSort(docstring const & item, docstring const & category,
 581         bool sorted, bool sortedByCat, bool unknown)
 582 {
 583         QString qitem = toqstr(item);
 584         // FIXME This is wrong for RTL, I'd suppose.
 585         QString titem = toqstr(translateIfPossible(item) +
 586                                (unknown ? _(" (unknown)") : from_ascii("")));
 587         QString qcat = toqstr(translateIfPossible(category));
 588
 589         QList<QStandardItem *> row;
 590         row.append(new QStandardItem(titem));
 591         row.append(new QStandardItem(qitem));
 592         row.append(new QStandardItem(qcat));
 593
 594         // the first entry is easy
 595         int const end = d->model_->rowCount();
 596         if (end == 0) {
 597                 d->model_->appendRow(row);
 598                 return;
 599         }
 600
 601         // find category
 602         int i = 0;
 603         if (sortedByCat) {
 604                 while (i < end && d->model_->item(i, 2)->text() != qcat)
 605                         ++i;
 606         }
 607
 608         // skip the Standard layout
 609         if (i == 0)
 610                 ++i;
 611
 612         // the simple unsorted case
 613         if (!sorted) {
 614                 if (sortedByCat) {
 615                         // jump to the end of the category group
 616                         while (i < end && d->model_->item(i, 2)->text() == qcat)
 617                                 ++i;
 618                         d->model_->insertRow(i, row);
 619                 } else
 620                         d->model_->appendRow(row);
 621                 return;
 622         }
 623
 624         // find row to insert the item, after the separator if it exists
 625         if (i < end) {
 626                 // find alphabetic position
 627                 while (i != end
 628                        && d->model_->item(i, 0)->text().localeAwareCompare(titem) < 0
 629                        && (!sortedByCat || d->model_->item(i, 2)->text() == qcat))
 630                         ++i;
 631         }
 632
 633         d->model_->insertRow(i, row);
 634 }
 635
 636
 637 void LayoutBox::updateContents(bool reset)
 638 {
 639         d->resetFilter();
 640
 641         Buffer const * buffer = d->owner_.buffer();
 642         if (!buffer) {
 643                 d->model_->clear();
 644                 setEnabled(false);
 645                 d->text_class_ = 0;
 646                 d->inset_ = 0;
 647                 return;
 648         }
 649
 650         // we'll only update the layout list if the text class has changed
 651         // or we've moved from one inset to another
 652         DocumentClass const * text_class = &buffer->params().documentClass();
 653         Inset const * inset =
 654                 &(d->owner_.view()->cursor().innerText()->inset());
 655         if (!reset && d->text_class_ == text_class && d->inset_ == inset) {
 656                 set(d->owner_.view()->cursor().innerParagraph().layout().name());
 657                 return;
 658         }
 659
 660         d->inset_ = inset;
 661         d->text_class_ = text_class;
 662
 663         d->model_->clear();
 664         DocumentClass::const_iterator lit = d->text_class_->begin();
 665         DocumentClass::const_iterator len = d->text_class_->end();
 666
 667         for (; lit != len; ++lit) {
 668                 docstring const & name = lit->name();
 669                 bool const useEmpty = d->inset_->forcePlainLayout() || d->inset_->usePlainLayout();
 670                 // if this inset requires the empty layout, we skip the default
 671                 // layout
 672                 if (name == d->text_class_->defaultLayoutName() && d->inset_ && useEmpty)
 673                         continue;
 674                 // if it doesn't require the empty layout, we skip it
 675                 if (name == d->text_class_->plainLayoutName() && d->inset_ && !useEmpty)
 676                         continue;
 677                 // obsoleted layouts are skipped as well
 678                 if (!lit->obsoleted_by().empty())
 679                         continue;
 680                 addItemSort(name, lit->category(), lyxrc.sort_layouts,
 681                                 lyxrc.group_layouts, lit->isUnknown());
 682         }
 683
 684         set(d->owner_.view()->cursor().innerParagraph().layout().name());
 685         d->countCategories();
 686
 687         // needed to recalculate size hint
 688         hide();
 689         setMinimumWidth(sizeHint().width());
 690         setEnabled(!buffer->isReadonly() &&
 691                 lyx::getStatus(FuncRequest(LFUN_LAYOUT)).enabled());
 692         show();
 693 }
 694
 695
 696 void LayoutBox::selected(int index)
 697 {
 698         // get selection
 699         QModelIndex mindex = d->filterModel_->mapToSource(
 700                 d->filterModel_->index(index, 1));
 701         docstring layoutName = qstring_to_ucs4(
 702                 d->model_->itemFromIndex(mindex)->text());
 703         d->owner_.setFocus();
 704
 705         if (!d->text_class_) {
 706                 updateContents(false);
 707                 d->resetFilter();
 708                 return;
 709         }
 710
 711         // find corresponding text class
 712         if (d->text_class_->hasLayout(layoutName)) {
 713                 FuncRequest const func(LFUN_LAYOUT, layoutName, FuncRequest::TOOLBAR);
 714                 theLyXFunc().setLyXView(&d->owner_);
 715                 lyx::dispatch(func);
 716                 updateContents(false);
 717                 d->resetFilter();
 718                 return;
 719         }
 720         LYXERR0("ERROR (layoutSelected): layout " << layoutName << " not found!");
 721 }
 722
 723
 724 QString const & LayoutBox::filter() const
 725 {
 726         return d->filter_;
 727 }
 728
 729 } // namespace frontend
 730 } // namespace lyx
 731
 732 #include "moc_LayoutBox.cpp"