src/kitemviews/kitemlistcontroller.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com>             *
   3  *   Copyright (C) 2012 by Frank Reininghaus <frank78ac@googlemail.com>    *
   4  *                                                                         *
   5  *   Based on the Itemviews NG project from Trolltech Labs:                *
   6  *   http://qt.gitorious.org/qt-labs/itemviews-ng                          *
   7  *                                                                         *
   8  *   This program is free software; you can redistribute it and/or modify  *
   9  *   it under the terms of the GNU General Public License as published by  *
  10  *   the Free Software Foundation; either version 2 of the License, or     *
  11  *   (at your option) any later version.                                   *
  12  *                                                                         *
  13  *   This program is distributed in the hope that it will be useful,       *
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  16  *   GNU General Public License for more details.                          *
  17  *                                                                         *
  18  *   You should have received a copy of the GNU General Public License     *
  19  *   along with this program; if not, write to the                         *
  20  *   Free Software Foundation, Inc.,                                       *
  21  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  22  ***************************************************************************/
  23
  24 #include "kitemlistcontroller.h"
  25
  26 #include <KGlobalSettings>
  27 #include <KDebug>
  28
  29 #include "kitemlistview.h"
  30 #include "kitemlistselectionmanager.h"
  31
  32 #include "private/kitemlistrubberband.h"
  33 #include "private/kitemlistkeyboardsearchmanager.h"
  34
  35 #include <QApplication>
  36 #include <QDrag>
  37 #include <QEvent>
  38 #include <QGraphicsScene>
  39 #include <QGraphicsSceneEvent>
  40 #include <QGraphicsView>
  41 #include <QMimeData>
  42 #include <QTimer>
  43 #include <QAccessible>
  44
  45 KItemListController::KItemListController(KItemModelBase* model, KItemListView* view, QObject* parent) :
  46     QObject(parent),
  47     m_singleClickActivationEnforced(false),
  48     m_selectionTogglePressed(false),
  49     m_clearSelectionIfItemsAreNotDragged(false),
  50     m_selectionBehavior(NoSelection),
  51     m_autoActivationBehavior(ActivationAndExpansion),
  52     m_mouseDoubleClickAction(ActivateItemOnly),
  53     m_model(0),
  54     m_view(0),
  55     m_selectionManager(new KItemListSelectionManager(this)),
  56     m_keyboardManager(new KItemListKeyboardSearchManager(this)),
  57     m_pressedIndex(-1),
  58     m_pressedMousePos(),
  59     m_autoActivationTimer(0),
  60     m_oldSelection(),
  61     m_keyboardAnchorIndex(-1),
  62     m_keyboardAnchorPos(0)
  63 {
  64     connect(m_keyboardManager, &KItemListKeyboardSearchManager::changeCurrentItem,
  65             this, &KItemListController::slotChangeCurrentItem);
  66     connect(m_selectionManager, &KItemListSelectionManager::currentChanged,
  67             m_keyboardManager, &KItemListKeyboardSearchManager::slotCurrentChanged);
  68
  69     m_autoActivationTimer = new QTimer(this);
  70     m_autoActivationTimer->setSingleShot(true);
  71     m_autoActivationTimer->setInterval(-1);
  72     connect(m_autoActivationTimer, &QTimer::timeout, this, &KItemListController::slotAutoActivationTimeout);
  73
  74     setModel(model);
  75     setView(view);
  76 }
  77
  78 KItemListController::~KItemListController()
  79 {
  80     setView(0);
  81     Q_ASSERT(!m_view);
  82
  83     setModel(0);
  84     Q_ASSERT(!m_model);
  85 }
  86
  87 void KItemListController::setModel(KItemModelBase* model)
  88 {
  89     if (m_model == model) {
  90         return;
  91     }
  92
  93     KItemModelBase* oldModel = m_model;
  94     if (oldModel) {
  95         oldModel->deleteLater();
  96     }
  97
  98     m_model = model;
  99     if (m_model) {
 100         m_model->setParent(this);
 101     }
 102
 103     if (m_view) {
 104         m_view->setModel(m_model);
 105     }
 106
 107     m_selectionManager->setModel(m_model);
 108
 109     emit modelChanged(m_model, oldModel);
 110 }
 111
 112 KItemModelBase* KItemListController::model() const
 113 {
 114     return m_model;
 115 }
 116
 117 KItemListSelectionManager* KItemListController::selectionManager() const
 118 {
 119     return m_selectionManager;
 120 }
 121
 122 void KItemListController::setView(KItemListView* view)
 123 {
 124     if (m_view == view) {
 125         return;
 126     }
 127
 128     KItemListView* oldView = m_view;
 129     if (oldView) {
 130         disconnect(oldView, &KItemListView::scrollOffsetChanged, this, &KItemListController::slotViewScrollOffsetChanged);
 131         oldView->deleteLater();
 132     }
 133
 134     m_view = view;
 135
 136     if (m_view) {
 137         m_view->setParent(this);
 138         m_view->setController(this);
 139         m_view->setModel(m_model);
 140         connect(m_view, &KItemListView::scrollOffsetChanged, this, &KItemListController::slotViewScrollOffsetChanged);
 141         updateExtendedSelectionRegion();
 142     }
 143
 144     emit viewChanged(m_view, oldView);
 145 }
 146
 147 KItemListView* KItemListController::view() const
 148 {
 149     return m_view;
 150 }
 151
 152 void KItemListController::setSelectionBehavior(SelectionBehavior behavior)
 153 {
 154     m_selectionBehavior = behavior;
 155     updateExtendedSelectionRegion();
 156 }
 157
 158 KItemListController::SelectionBehavior KItemListController::selectionBehavior() const
 159 {
 160     return m_selectionBehavior;
 161 }
 162
 163 void KItemListController::setAutoActivationBehavior(AutoActivationBehavior behavior)
 164 {
 165     m_autoActivationBehavior = behavior;
 166 }
 167
 168 KItemListController::AutoActivationBehavior KItemListController::autoActivationBehavior() const
 169 {
 170     return m_autoActivationBehavior;
 171 }
 172
 173 void KItemListController::setMouseDoubleClickAction(MouseDoubleClickAction action)
 174 {
 175     m_mouseDoubleClickAction = action;
 176 }
 177
 178 KItemListController::MouseDoubleClickAction KItemListController::mouseDoubleClickAction() const
 179 {
 180     return m_mouseDoubleClickAction;
 181 }
 182
 183 void KItemListController::setAutoActivationDelay(int delay)
 184 {
 185     m_autoActivationTimer->setInterval(delay);
 186 }
 187
 188 int KItemListController::autoActivationDelay() const
 189 {
 190     return m_autoActivationTimer->interval();
 191 }
 192
 193 void KItemListController::setSingleClickActivationEnforced(bool singleClick)
 194 {
 195     m_singleClickActivationEnforced = singleClick;
 196 }
 197
 198 bool KItemListController::singleClickActivationEnforced() const
 199 {
 200     return m_singleClickActivationEnforced;
 201 }
 202
 203 bool KItemListController::showEvent(QShowEvent* event)
 204 {
 205     Q_UNUSED(event);
 206     return false;
 207 }
 208
 209 bool KItemListController::hideEvent(QHideEvent* event)
 210 {
 211     Q_UNUSED(event);
 212     return false;
 213 }
 214
 215 bool KItemListController::keyPressEvent(QKeyEvent* event)
 216 {
 217     int index = m_selectionManager->currentItem();
 218     int key = event->key();
 219
 220     // Handle the expanding/collapsing of items
 221     if (m_view->supportsItemExpanding() && m_model->isExpandable(index)) {
 222         if (key == Qt::Key_Right) {
 223             if (m_model->setExpanded(index, true)) {
 224                 return true;
 225             }
 226         } else if (key == Qt::Key_Left) {
 227             if (m_model->setExpanded(index, false)) {
 228                 return true;
 229             }
 230         }
 231     }
 232
 233     const bool shiftPressed = event->modifiers() & Qt::ShiftModifier;
 234     const bool controlPressed = event->modifiers() & Qt::ControlModifier;
 235     const bool shiftOrControlPressed = shiftPressed || controlPressed;
 236
 237     const int itemCount = m_model->count();
 238
 239     // For horizontal scroll orientation, transform
 240     // the arrow keys to simplify the event handling.
 241     if (m_view->scrollOrientation() == Qt::Horizontal) {
 242         switch (key) {
 243         case Qt::Key_Up:    key = Qt::Key_Left; break;
 244         case Qt::Key_Down:  key = Qt::Key_Right; break;
 245         case Qt::Key_Left:  key = Qt::Key_Up; break;
 246         case Qt::Key_Right: key = Qt::Key_Down; break;
 247         default:            break;
 248         }
 249     }
 250
 251     const bool selectSingleItem = m_selectionBehavior != NoSelection &&
 252                                   itemCount == 1 &&
 253                                   (key == Qt::Key_Home || key == Qt::Key_End  ||
 254                                    key == Qt::Key_Up   || key == Qt::Key_Down ||
 255                                    key == Qt::Key_Left || key == Qt::Key_Right);
 256     if (selectSingleItem) {
 257         const int current = m_selectionManager->currentItem();
 258         m_selectionManager->setSelected(current);
 259         return true;
 260     }
 261
 262     switch (key) {
 263     case Qt::Key_Home:
 264         index = 0;
 265         m_keyboardAnchorIndex = index;
 266         m_keyboardAnchorPos = keyboardAnchorPos(index);
 267         break;
 268
 269     case Qt::Key_End:
 270         index = itemCount - 1;
 271         m_keyboardAnchorIndex = index;
 272         m_keyboardAnchorPos = keyboardAnchorPos(index);
 273         break;
 274
 275     case Qt::Key_Left:
 276         if (index > 0) {
 277             const int expandedParentsCount = m_model->expandedParentsCount(index);
 278             if (expandedParentsCount == 0) {
 279                 --index;
 280             } else {
 281                 // Go to the parent of the current item.
 282                 do {
 283                     --index;
 284                 } while (index > 0 && m_model->expandedParentsCount(index) == expandedParentsCount);
 285             }
 286             m_keyboardAnchorIndex = index;
 287             m_keyboardAnchorPos = keyboardAnchorPos(index);
 288         }
 289         break;
 290
 291     case Qt::Key_Right:
 292         if (index < itemCount - 1) {
 293             ++index;
 294             m_keyboardAnchorIndex = index;
 295             m_keyboardAnchorPos = keyboardAnchorPos(index);
 296         }
 297         break;
 298
 299     case Qt::Key_Up:
 300         updateKeyboardAnchor();
 301         index = previousRowIndex(index);
 302         break;
 303
 304     case Qt::Key_Down:
 305         updateKeyboardAnchor();
 306         index = nextRowIndex(index);
 307         break;
 308
 309     case Qt::Key_PageUp:
 310         if (m_view->scrollOrientation() == Qt::Horizontal) {
 311             // The new current index should correspond to the first item in the current column.
 312             int newIndex = qMax(index - 1, 0);
 313             while (newIndex != index && m_view->itemRect(newIndex).topLeft().y() < m_view->itemRect(index).topLeft().y()) {
 314                 index = newIndex;
 315                 newIndex = qMax(index - 1, 0);
 316             }
 317             m_keyboardAnchorIndex = index;
 318             m_keyboardAnchorPos = keyboardAnchorPos(index);
 319         } else {
 320             const qreal currentItemBottom = m_view->itemRect(index).bottomLeft().y();
 321             const qreal height = m_view->geometry().height();
 322
 323             // The new current item should be the first item in the current
 324             // column whose itemRect's top coordinate is larger than targetY.
 325             const qreal targetY = currentItemBottom - height;
 326
 327             updateKeyboardAnchor();
 328             int newIndex = previousRowIndex(index);
 329             do {
 330                 index = newIndex;
 331                 updateKeyboardAnchor();
 332                 newIndex = previousRowIndex(index);
 333             } while (m_view->itemRect(newIndex).topLeft().y() > targetY && newIndex != index);
 334         }
 335         break;
 336
 337     case Qt::Key_PageDown:
 338         if (m_view->scrollOrientation() == Qt::Horizontal) {
 339             // The new current index should correspond to the last item in the current column.
 340             int newIndex = qMin(index + 1, m_model->count() - 1);
 341             while (newIndex != index && m_view->itemRect(newIndex).topLeft().y() > m_view->itemRect(index).topLeft().y()) {
 342                 index = newIndex;
 343                 newIndex = qMin(index + 1, m_model->count() - 1);
 344             }
 345             m_keyboardAnchorIndex = index;
 346             m_keyboardAnchorPos = keyboardAnchorPos(index);
 347         } else {
 348             const qreal currentItemTop = m_view->itemRect(index).topLeft().y();
 349             const qreal height = m_view->geometry().height();
 350
 351             // The new current item should be the last item in the current
 352             // column whose itemRect's bottom coordinate is smaller than targetY.
 353             const qreal targetY = currentItemTop + height;
 354
 355             updateKeyboardAnchor();
 356             int newIndex = nextRowIndex(index);
 357             do {
 358                 index = newIndex;
 359                 updateKeyboardAnchor();
 360                 newIndex = nextRowIndex(index);
 361             } while (m_view->itemRect(newIndex).bottomLeft().y() < targetY && newIndex != index);
 362         }
 363         break;
 364
 365     case Qt::Key_Enter:
 366     case Qt::Key_Return: {
 367         const KItemSet selectedItems = m_selectionManager->selectedItems();
 368         if (selectedItems.count() >= 2) {
 369             emit itemsActivated(selectedItems);
 370         } else if (selectedItems.count() == 1) {
 371             emit itemActivated(selectedItems.first());
 372         } else {
 373             emit itemActivated(index);
 374         }
 375         break;
 376     }
 377
 378     case Qt::Key_Menu: {
 379         // Emit the signal itemContextMenuRequested() in case if at least one
 380         // item is selected. Otherwise the signal viewContextMenuRequested() will be emitted.
 381         const KItemSet selectedItems = m_selectionManager->selectedItems();
 382         int index = -1;
 383         if (selectedItems.count() >= 2) {
 384             const int currentItemIndex = m_selectionManager->currentItem();
 385             index = selectedItems.contains(currentItemIndex)
 386                     ? currentItemIndex : selectedItems.first();
 387         } else if (selectedItems.count() == 1) {
 388             index = selectedItems.first();
 389         }
 390
 391         if (index >= 0) {
 392             const QRectF contextRect = m_view->itemContextRect(index);
 393             const QPointF pos(m_view->scene()->views().first()->mapToGlobal(contextRect.bottomRight().toPoint()));
 394             emit itemContextMenuRequested(index, pos);
 395         } else {
 396             emit viewContextMenuRequested(QCursor::pos());
 397         }
 398         break;
 399     }
 400
 401     case Qt::Key_Escape:
 402         if (m_selectionBehavior != SingleSelection) {
 403             m_selectionManager->clearSelection();
 404         }
 405         m_keyboardManager->cancelSearch();
 406         emit escapePressed();
 407         break;
 408
 409     case Qt::Key_Space:
 410         if (m_selectionBehavior == MultiSelection) {
 411             if (controlPressed) {
 412                 // Toggle the selection state of the current item.
 413                 m_selectionManager->endAnchoredSelection();
 414                 m_selectionManager->setSelected(index, 1, KItemListSelectionManager::Toggle);
 415                 m_selectionManager->beginAnchoredSelection(index);
 416                 break;
 417             } else {
 418                 // Select the current item if it is not selected yet.
 419                 const int current = m_selectionManager->currentItem();
 420                 if (!m_selectionManager->isSelected(current)) {
 421                     m_selectionManager->setSelected(current);
 422                     break;
 423                 }
 424             }
 425         }
 426         // Fall through to the default case and add the Space to the current search string.
 427
 428     default:
 429         m_keyboardManager->addKeys(event->text());
 430         // Make sure unconsumed events get propagated up the chain. #302329
 431         event->ignore();
 432         return false;
 433     }
 434
 435     if (m_selectionManager->currentItem() != index) {
 436         switch (m_selectionBehavior) {
 437         case NoSelection:
 438             m_selectionManager->setCurrentItem(index);
 439             break;
 440
 441         case SingleSelection:
 442             m_selectionManager->setCurrentItem(index);
 443             m_selectionManager->clearSelection();
 444             m_selectionManager->setSelected(index, 1);
 445             break;
 446
 447         case MultiSelection:
 448             if (controlPressed) {
 449                 m_selectionManager->endAnchoredSelection();
 450             }
 451
 452             m_selectionManager->setCurrentItem(index);
 453
 454             if (!shiftOrControlPressed) {
 455                 m_selectionManager->clearSelection();
 456                 m_selectionManager->setSelected(index, 1);
 457             }
 458
 459             if (!shiftPressed) {
 460                 m_selectionManager->beginAnchoredSelection(index);
 461             }
 462             break;
 463         }
 464
 465         m_view->scrollToItem(index);
 466     }
 467     return true;
 468 }
 469
 470 void KItemListController::slotChangeCurrentItem(const QString& text, bool searchFromNextItem)
 471 {
 472     if (!m_model || m_model->count() == 0) {
 473         return;
 474     }
 475     const int currentIndex = m_selectionManager->currentItem();
 476     int index;
 477     if (searchFromNextItem) {
 478         index = m_model->indexForKeyboardSearch(text, (currentIndex + 1) % m_model->count());
 479     } else {
 480         index = m_model->indexForKeyboardSearch(text, currentIndex);
 481     }
 482     if (index >= 0) {
 483         m_selectionManager->setCurrentItem(index);
 484
 485         if (m_selectionBehavior != NoSelection) {
 486             m_selectionManager->clearSelection();
 487             m_selectionManager->setSelected(index, 1);
 488             m_selectionManager->beginAnchoredSelection(index);
 489         }
 490
 491         m_view->scrollToItem(index);
 492     }
 493 }
 494
 495 void KItemListController::slotAutoActivationTimeout()
 496 {
 497     if (!m_model || !m_view) {
 498         return;
 499     }
 500
 501     const int index = m_autoActivationTimer->property("index").toInt();
 502     if (index < 0 || index >= m_model->count()) {
 503         return;
 504     }
 505
 506     /* m_view->isUnderMouse() fixes a bug in the Folder-View-Panel and in the
 507      * Places-Panel.
 508      *
 509      * Bug: When you drag a file onto a Folder-View-Item or a Places-Item and
 510      * then move away before the auto-activation timeout triggers, than the
 511      * item still becomes activated/expanded.
 512      *
 513      * See Bug 293200 and 305783
 514      */
 515     if (m_model->supportsDropping(index) && m_view->isUnderMouse()) {
 516         if (m_view->supportsItemExpanding() && m_model->isExpandable(index)) {
 517             const bool expanded = m_model->isExpanded(index);
 518             m_model->setExpanded(index, !expanded);
 519         } else if (m_autoActivationBehavior != ExpansionOnly) {
 520             emit itemActivated(index);
 521         }
 522     }
 523 }
 524
 525 bool KItemListController::inputMethodEvent(QInputMethodEvent* event)
 526 {
 527     Q_UNUSED(event);
 528     return false;
 529 }
 530
 531 bool KItemListController::mousePressEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 532 {
 533     if (!m_view) {
 534         return false;
 535     }
 536
 537     m_pressedMousePos = transform.map(event->pos());
 538     m_pressedIndex = m_view->itemAt(m_pressedMousePos);
 539     emit mouseButtonPressed(m_pressedIndex, event->buttons());
 540
 541     if (event->buttons() & (Qt::BackButton | Qt::ForwardButton)) {
 542         // Do not select items when clicking the back/forward buttons, see
 543         // https://bugs.kde.org/show_bug.cgi?id=327412.
 544         return true;
 545     }
 546
 547     if (m_view->isAboveExpansionToggle(m_pressedIndex, m_pressedMousePos)) {
 548         m_selectionManager->endAnchoredSelection();
 549         m_selectionManager->setCurrentItem(m_pressedIndex);
 550         m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 551         return true;
 552     }
 553
 554     m_selectionTogglePressed = m_view->isAboveSelectionToggle(m_pressedIndex, m_pressedMousePos);
 555     if (m_selectionTogglePressed) {
 556         m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
 557         // The previous anchored selection has been finished already in
 558         // KItemListSelectionManager::setSelected(). We can safely change
 559         // the current item and start a new anchored selection now.
 560         m_selectionManager->setCurrentItem(m_pressedIndex);
 561         m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 562         return true;
 563     }
 564
 565     const bool shiftPressed = event->modifiers() & Qt::ShiftModifier;
 566     const bool controlPressed = event->modifiers() & Qt::ControlModifier;
 567
 568     // The previous selection is cleared if either
 569     // 1. The selection mode is SingleSelection, or
 570     // 2. the selection mode is MultiSelection, and *none* of the following conditions are met:
 571     //    a) Shift or Control are pressed.
 572     //    b) The clicked item is selected already. In that case, the user might want to:
 573     //       - start dragging multiple items, or
 574     //       - open the context menu and perform an action for all selected items.
 575     const bool shiftOrControlPressed = shiftPressed || controlPressed;
 576     const bool pressedItemAlreadySelected = m_pressedIndex >= 0 && m_selectionManager->isSelected(m_pressedIndex);
 577     const bool clearSelection = m_selectionBehavior == SingleSelection ||
 578                                 (!shiftOrControlPressed && !pressedItemAlreadySelected);
 579     if (clearSelection) {
 580         m_selectionManager->clearSelection();
 581     } else if (pressedItemAlreadySelected && !shiftOrControlPressed && (event->buttons() & Qt::LeftButton)) {
 582         // The user might want to start dragging multiple items, but if he clicks the item
 583         // in order to trigger it instead, the other selected items must be deselected.
 584         // However, we do not know yet what the user is going to do.
 585         // -> remember that the user pressed an item which had been selected already and
 586         //    clear the selection in mouseReleaseEvent(), unless the items are dragged.
 587         m_clearSelectionIfItemsAreNotDragged = true;
 588     }
 589
 590     if (!shiftPressed) {
 591         // Finish the anchored selection before the current index is changed
 592         m_selectionManager->endAnchoredSelection();
 593     }
 594
 595     if (m_pressedIndex >= 0) {
 596         m_selectionManager->setCurrentItem(m_pressedIndex);
 597
 598         switch (m_selectionBehavior) {
 599         case NoSelection:
 600             break;
 601
 602         case SingleSelection:
 603             m_selectionManager->setSelected(m_pressedIndex);
 604             break;
 605
 606         case MultiSelection:
 607             if (controlPressed && !shiftPressed) {
 608                 m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
 609                 m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 610             } else if (!shiftPressed || !m_selectionManager->isAnchoredSelectionActive()) {
 611                 // Select the pressed item and start a new anchored selection
 612                 m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Select);
 613                 m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 614             }
 615             break;
 616
 617         default:
 618             Q_ASSERT(false);
 619             break;
 620         }
 621
 622         if (event->buttons() & Qt::RightButton) {
 623             emit itemContextMenuRequested(m_pressedIndex, event->screenPos());
 624         }
 625
 626         return true;
 627     }
 628
 629     if (event->buttons() & Qt::RightButton) {
 630         const QRectF headerBounds = m_view->headerBoundaries();
 631         if (headerBounds.contains(event->pos())) {
 632             emit headerContextMenuRequested(event->screenPos());
 633         } else {
 634             emit viewContextMenuRequested(event->screenPos());
 635         }
 636         return true;
 637     }
 638
 639     if (m_selectionBehavior == MultiSelection) {
 640         QPointF startPos = m_pressedMousePos;
 641         if (m_view->scrollOrientation() == Qt::Vertical) {
 642             startPos.ry() += m_view->scrollOffset();
 643             if (m_view->itemSize().width() < 0) {
 644                 // Use a special rubberband for views that have only one column and
 645                 // expand the rubberband to use the whole width of the view.
 646                 startPos.setX(0);
 647             }
 648         } else {
 649             startPos.rx() += m_view->scrollOffset();
 650         }
 651
 652         m_oldSelection = m_selectionManager->selectedItems();
 653         KItemListRubberBand* rubberBand = m_view->rubberBand();
 654         rubberBand->setStartPosition(startPos);
 655         rubberBand->setEndPosition(startPos);
 656         rubberBand->setActive(true);
 657         connect(rubberBand, &KItemListRubberBand::endPositionChanged, this, &KItemListController::slotRubberBandChanged);
 658         m_view->setAutoScroll(true);
 659     }
 660
 661     return false;
 662 }
 663
 664 bool KItemListController::mouseMoveEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 665 {
 666     if (!m_view) {
 667         return false;
 668     }
 669
 670     if (m_pressedIndex >= 0) {
 671         // Check whether a dragging should be started
 672         if (event->buttons() & Qt::LeftButton) {
 673             const QPointF pos = transform.map(event->pos());
 674             if ((pos - m_pressedMousePos).manhattanLength() >= QApplication::startDragDistance()) {
 675                 if (!m_selectionManager->isSelected(m_pressedIndex)) {
 676                     // Always assure that the dragged item gets selected. Usually this is already
 677                     // done on the mouse-press event, but when using the selection-toggle on a
 678                     // selected item the dragged item is not selected yet.
 679                     m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
 680                 } else {
 681                     // A selected item has been clicked to drag all selected items
 682                     // -> the selection should not be cleared when the mouse button is released.
 683                     m_clearSelectionIfItemsAreNotDragged = false;
 684                 }
 685
 686                 startDragging();
 687             }
 688         }
 689     } else {
 690         KItemListRubberBand* rubberBand = m_view->rubberBand();
 691         if (rubberBand->isActive()) {
 692             QPointF endPos = transform.map(event->pos());
 693
 694             // Update the current item.
 695             const int newCurrent = m_view->itemAt(endPos);
 696             if (newCurrent >= 0) {
 697                 // It's expected that the new current index is also the new anchor (bug 163451).
 698                 m_selectionManager->endAnchoredSelection();
 699                 m_selectionManager->setCurrentItem(newCurrent);
 700                 m_selectionManager->beginAnchoredSelection(newCurrent);
 701             }
 702
 703             if (m_view->scrollOrientation() == Qt::Vertical) {
 704                 endPos.ry() += m_view->scrollOffset();
 705                 if (m_view->itemSize().width() < 0) {
 706                     // Use a special rubberband for views that have only one column and
 707                     // expand the rubberband to use the whole width of the view.
 708                     endPos.setX(m_view->size().width());
 709                 }
 710             } else {
 711                 endPos.rx() += m_view->scrollOffset();
 712             }
 713             rubberBand->setEndPosition(endPos);
 714         }
 715     }
 716
 717     return false;
 718 }
 719
 720 bool KItemListController::mouseReleaseEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 721 {
 722     if (!m_view) {
 723         return false;
 724     }
 725
 726     emit mouseButtonReleased(m_pressedIndex, event->buttons());
 727
 728     const bool isAboveSelectionToggle = m_view->isAboveSelectionToggle(m_pressedIndex, m_pressedMousePos);
 729     if (isAboveSelectionToggle) {
 730         m_selectionTogglePressed = false;
 731         return true;
 732     }
 733
 734     if (!isAboveSelectionToggle && m_selectionTogglePressed) {
 735         m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
 736         m_selectionTogglePressed = false;
 737         return true;
 738     }
 739
 740     const bool shiftOrControlPressed = event->modifiers() & Qt::ShiftModifier ||
 741                                        event->modifiers() & Qt::ControlModifier;
 742
 743     KItemListRubberBand* rubberBand = m_view->rubberBand();
 744     if (rubberBand->isActive()) {
 745         disconnect(rubberBand, &KItemListRubberBand::endPositionChanged, this, &KItemListController::slotRubberBandChanged);
 746         rubberBand->setActive(false);
 747         m_oldSelection.clear();
 748         m_view->setAutoScroll(false);
 749     }
 750
 751     const QPointF pos = transform.map(event->pos());
 752     const int index = m_view->itemAt(pos);
 753
 754     if (index >= 0 && index == m_pressedIndex) {
 755         // The release event is done above the same item as the press event
 756
 757         if (m_clearSelectionIfItemsAreNotDragged) {
 758             // A selected item has been clicked, but no drag operation has been started
 759             // -> clear the rest of the selection.
 760             m_selectionManager->clearSelection();
 761             m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Select);
 762             m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 763         }
 764
 765         if (event->button() & Qt::LeftButton) {
 766             bool emitItemActivated = true;
 767             if (m_view->isAboveExpansionToggle(index, pos)) {
 768                 const bool expanded = m_model->isExpanded(index);
 769                 m_model->setExpanded(index, !expanded);
 770
 771                 emit itemExpansionToggleClicked(index);
 772                 emitItemActivated = false;
 773             } else if (shiftOrControlPressed) {
 774                 // The mouse click should only update the selection, not trigger the item
 775                 emitItemActivated = false;
 776             } else if (!(KGlobalSettings::singleClick() || m_singleClickActivationEnforced)) {
 777                 emitItemActivated = false;
 778             }
 779             if (emitItemActivated) {
 780                 emit itemActivated(index);
 781             }
 782         } else if (event->button() & Qt::MidButton) {
 783             emit itemMiddleClicked(index);
 784         }
 785     }
 786
 787     m_pressedMousePos = QPointF();
 788     m_pressedIndex = -1;
 789     m_clearSelectionIfItemsAreNotDragged = false;
 790     return false;
 791 }
 792
 793 bool KItemListController::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 794 {
 795     const QPointF pos = transform.map(event->pos());
 796     const int index = m_view->itemAt(pos);
 797
 798     // Expand item if desired - See Bug 295573
 799     if (m_mouseDoubleClickAction != ActivateItemOnly) {
 800         if (m_view && m_model && m_view->supportsItemExpanding() && m_model->isExpandable(index)) {
 801             const bool expanded = m_model->isExpanded(index);
 802             m_model->setExpanded(index, !expanded);
 803         }
 804     }
 805
 806     bool emitItemActivated = !(KGlobalSettings::singleClick() || m_singleClickActivationEnforced) &&
 807                              (event->button() & Qt::LeftButton) &&
 808                              index >= 0 && index < m_model->count();
 809     if (emitItemActivated) {
 810         emit itemActivated(index);
 811     }
 812     return false;
 813 }
 814
 815 bool KItemListController::dragEnterEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 816 {
 817     Q_UNUSED(event);
 818     Q_UNUSED(transform);
 819     return false;
 820 }
 821
 822 bool KItemListController::dragLeaveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 823 {
 824     Q_UNUSED(event);
 825     Q_UNUSED(transform);
 826
 827     m_view->setAutoScroll(false);
 828     m_view->hideDropIndicator();
 829
 830     KItemListWidget* widget = hoveredWidget();
 831     if (widget) {
 832         widget->setHovered(false);
 833         emit itemUnhovered(widget->index());
 834     }
 835     return false;
 836 }
 837
 838 bool KItemListController::dragMoveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 839 {
 840     if (!m_model || !m_view) {
 841         return false;
 842     }
 843
 844     event->acceptProposedAction();
 845
 846     KItemListWidget* oldHoveredWidget = hoveredWidget();
 847
 848     const QPointF pos = transform.map(event->pos());
 849     KItemListWidget* newHoveredWidget = widgetForPos(pos);
 850
 851     if (oldHoveredWidget != newHoveredWidget) {
 852         m_autoActivationTimer->stop();
 853
 854         if (oldHoveredWidget) {
 855             oldHoveredWidget->setHovered(false);
 856             emit itemUnhovered(oldHoveredWidget->index());
 857         }
 858     }
 859
 860     if (newHoveredWidget) {
 861         bool droppingBetweenItems = false;
 862         if (m_model->sortRole().isEmpty()) {
 863             // The model supports inserting items between other items.
 864             droppingBetweenItems = (m_view->showDropIndicator(pos) >= 0);
 865         }
 866
 867         const int index = newHoveredWidget->index();
 868         if (!droppingBetweenItems) {
 869             if (m_model->supportsDropping(index)) {
 870                 // Something has been dragged on an item.
 871                 m_view->hideDropIndicator();
 872                 if (!newHoveredWidget->isHovered()) {
 873                     newHoveredWidget->setHovered(true);
 874                     emit itemHovered(index);
 875                 }
 876
 877                 if (!m_autoActivationTimer->isActive() && m_autoActivationTimer->interval() >= 0) {
 878                     m_autoActivationTimer->setProperty("index", index);
 879                     m_autoActivationTimer->start();
 880                 }
 881             }
 882         } else {
 883             m_autoActivationTimer->stop();
 884             if (newHoveredWidget && newHoveredWidget->isHovered()) {
 885                 newHoveredWidget->setHovered(false);
 886                 emit itemUnhovered(index);
 887             }
 888         }
 889     } else {
 890         m_view->hideDropIndicator();
 891     }
 892
 893     return false;
 894 }
 895
 896 bool KItemListController::dropEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 897 {
 898     if (!m_view) {
 899         return false;
 900     }
 901
 902     m_autoActivationTimer->stop();
 903     m_view->setAutoScroll(false);
 904
 905     const QPointF pos = transform.map(event->pos());
 906
 907     int dropAboveIndex = -1;
 908     if (m_model->sortRole().isEmpty()) {
 909         // The model supports inserting of items between other items.
 910         dropAboveIndex = m_view->showDropIndicator(pos);
 911     }
 912
 913     if (dropAboveIndex >= 0) {
 914         // Something has been dropped between two items.
 915         m_view->hideDropIndicator();
 916         emit aboveItemDropEvent(dropAboveIndex, event);
 917     } else {
 918         // Something has been dropped on an item or on an empty part of the view.
 919         emit itemDropEvent(m_view->itemAt(pos), event);
 920     }
 921
 922     QAccessible::updateAccessibility(view(), 0, QAccessible::DragDropEnd);
 923
 924     return true;
 925 }
 926
 927 bool KItemListController::hoverEnterEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 928 {
 929     Q_UNUSED(event);
 930     Q_UNUSED(transform);
 931     return false;
 932 }
 933
 934 bool KItemListController::hoverMoveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 935 {
 936     Q_UNUSED(transform);
 937     if (!m_model || !m_view) {
 938         return false;
 939     }
 940
 941     KItemListWidget* oldHoveredWidget = hoveredWidget();
 942     const QPointF pos = transform.map(event->pos());
 943     KItemListWidget* newHoveredWidget = widgetForPos(pos);
 944
 945     if (oldHoveredWidget != newHoveredWidget) {
 946         if (oldHoveredWidget) {
 947             oldHoveredWidget->setHovered(false);
 948             emit itemUnhovered(oldHoveredWidget->index());
 949         }
 950
 951         if (newHoveredWidget) {
 952             newHoveredWidget->setHovered(true);
 953             const QPointF mappedPos = newHoveredWidget->mapFromItem(m_view, pos);
 954             newHoveredWidget->setHoverPosition(mappedPos);
 955             emit itemHovered(newHoveredWidget->index());
 956         }
 957     } else if (oldHoveredWidget) {
 958         const QPointF mappedPos = oldHoveredWidget->mapFromItem(m_view, pos);
 959         oldHoveredWidget->setHoverPosition(mappedPos);
 960     }
 961
 962     return false;
 963 }
 964
 965 bool KItemListController::hoverLeaveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 966 {
 967     Q_UNUSED(event);
 968     Q_UNUSED(transform);
 969
 970     if (!m_model || !m_view) {
 971         return false;
 972     }
 973
 974     foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
 975         if (widget->isHovered()) {
 976             widget->setHovered(false);
 977             emit itemUnhovered(widget->index());
 978         }
 979     }
 980     return false;
 981 }
 982
 983 bool KItemListController::wheelEvent(QGraphicsSceneWheelEvent* event, const QTransform& transform)
 984 {
 985     Q_UNUSED(event);
 986     Q_UNUSED(transform);
 987     return false;
 988 }
 989
 990 bool KItemListController::resizeEvent(QGraphicsSceneResizeEvent* event, const QTransform& transform)
 991 {
 992     Q_UNUSED(event);
 993     Q_UNUSED(transform);
 994     return false;
 995 }
 996
 997 bool KItemListController::processEvent(QEvent* event, const QTransform& transform)
 998 {
 999     if (!event) {
1000         return false;
1001     }
1002
1003     switch (event->type()) {
1004     case QEvent::KeyPress:
1005         return keyPressEvent(static_cast<QKeyEvent*>(event));
1006     case QEvent::InputMethod:
1007         return inputMethodEvent(static_cast<QInputMethodEvent*>(event));
1008     case QEvent::GraphicsSceneMousePress:
1009         return mousePressEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
1010     case QEvent::GraphicsSceneMouseMove:
1011         return mouseMoveEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
1012     case QEvent::GraphicsSceneMouseRelease:
1013         return mouseReleaseEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
1014     case QEvent::GraphicsSceneMouseDoubleClick:
1015         return mouseDoubleClickEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
1016     case QEvent::GraphicsSceneWheel:
1017          return wheelEvent(static_cast<QGraphicsSceneWheelEvent*>(event), QTransform());
1018     case QEvent::GraphicsSceneDragEnter:
1019         return dragEnterEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
1020     case QEvent::GraphicsSceneDragLeave:
1021         return dragLeaveEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
1022     case QEvent::GraphicsSceneDragMove:
1023         return dragMoveEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
1024     case QEvent::GraphicsSceneDrop:
1025         return dropEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
1026     case QEvent::GraphicsSceneHoverEnter:
1027         return hoverEnterEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
1028     case QEvent::GraphicsSceneHoverMove:
1029         return hoverMoveEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
1030     case QEvent::GraphicsSceneHoverLeave:
1031         return hoverLeaveEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
1032     case QEvent::GraphicsSceneResize:
1033         return resizeEvent(static_cast<QGraphicsSceneResizeEvent*>(event), transform);
1034     default:
1035         break;
1036     }
1037
1038     return false;
1039 }
1040
1041 void KItemListController::slotViewScrollOffsetChanged(qreal current, qreal previous)
1042 {
1043     if (!m_view) {
1044         return;
1045     }
1046
1047     KItemListRubberBand* rubberBand = m_view->rubberBand();
1048     if (rubberBand->isActive()) {
1049         const qreal diff = current - previous;
1050         // TODO: Ideally just QCursor::pos() should be used as
1051         // new end-position but it seems there is no easy way
1052         // to have something like QWidget::mapFromGlobal() for QGraphicsWidget
1053         // (... or I just missed an easy way to do the mapping)
1054         QPointF endPos = rubberBand->endPosition();
1055         if (m_view->scrollOrientation() == Qt::Vertical) {
1056             endPos.ry() += diff;
1057         } else {
1058             endPos.rx() += diff;
1059         }
1060
1061         rubberBand->setEndPosition(endPos);
1062     }
1063 }
1064
1065 void KItemListController::slotRubberBandChanged()
1066 {
1067     if (!m_view || !m_model || m_model->count() <= 0) {
1068         return;
1069     }
1070
1071     const KItemListRubberBand* rubberBand = m_view->rubberBand();
1072     const QPointF startPos = rubberBand->startPosition();
1073     const QPointF endPos = rubberBand->endPosition();
1074     QRectF rubberBandRect = QRectF(startPos, endPos).normalized();
1075
1076     const bool scrollVertical = (m_view->scrollOrientation() == Qt::Vertical);
1077     if (scrollVertical) {
1078         rubberBandRect.translate(0, -m_view->scrollOffset());
1079     } else {
1080         rubberBandRect.translate(-m_view->scrollOffset(), 0);
1081     }
1082
1083     if (!m_oldSelection.isEmpty()) {
1084         // Clear the old selection that was available before the rubberband has
1085         // been activated in case if no Shift- or Control-key are pressed
1086         const bool shiftOrControlPressed = QApplication::keyboardModifiers() & Qt::ShiftModifier ||
1087                                            QApplication::keyboardModifiers() & Qt::ControlModifier;
1088         if (!shiftOrControlPressed) {
1089             m_oldSelection.clear();
1090         }
1091     }
1092
1093     KItemSet selectedItems;
1094
1095     // Select all visible items that intersect with the rubberband
1096     foreach (const KItemListWidget* widget, m_view->visibleItemListWidgets()) {
1097         const int index = widget->index();
1098
1099         const QRectF widgetRect = m_view->itemRect(index);
1100         if (widgetRect.intersects(rubberBandRect)) {
1101             const QRectF iconRect = widget->iconRect().translated(widgetRect.topLeft());
1102             const QRectF textRect = widget->textRect().translated(widgetRect.topLeft());
1103             if (iconRect.intersects(rubberBandRect) || textRect.intersects(rubberBandRect)) {
1104                 selectedItems.insert(index);
1105             }
1106         }
1107     }
1108
1109     // Select all invisible items that intersect with the rubberband. Instead of
1110     // iterating all items only the area which might be touched by the rubberband
1111     // will be checked.
1112     const bool increaseIndex = scrollVertical ?
1113                                startPos.y() > endPos.y(): startPos.x() > endPos.x();
1114
1115     int index = increaseIndex ? m_view->lastVisibleIndex() + 1 : m_view->firstVisibleIndex() - 1;
1116     bool selectionFinished = false;
1117     do {
1118         const QRectF widgetRect = m_view->itemRect(index);
1119         if (widgetRect.intersects(rubberBandRect)) {
1120             selectedItems.insert(index);
1121         }
1122
1123         if (increaseIndex) {
1124             ++index;
1125             selectionFinished = (index >= m_model->count()) ||
1126                                 ( scrollVertical && widgetRect.top()  > rubberBandRect.bottom()) ||
1127                                 (!scrollVertical && widgetRect.left() > rubberBandRect.right());
1128         } else {
1129             --index;
1130             selectionFinished = (index < 0) ||
1131                                 ( scrollVertical && widgetRect.bottom() < rubberBandRect.top()) ||
1132                                 (!scrollVertical && widgetRect.right()  < rubberBandRect.left());
1133         }
1134     } while (!selectionFinished);
1135
1136     if (QApplication::keyboardModifiers() & Qt::ControlModifier) {
1137         // If Control is pressed, the selection state of all items in the rubberband is toggled.
1138         // Therefore, the new selection contains:
1139         // 1. All previously selected items which are not inside the rubberband, and
1140         // 2. all items inside the rubberband which have not been selected previously.
1141         m_selectionManager->setSelectedItems(m_oldSelection ^ selectedItems);
1142     }
1143     else {
1144         m_selectionManager->setSelectedItems(selectedItems + m_oldSelection);
1145     }
1146 }
1147
1148 void KItemListController::startDragging()
1149 {
1150     if (!m_view || !m_model) {
1151         return;
1152     }
1153
1154     const KItemSet selectedItems = m_selectionManager->selectedItems();
1155     if (selectedItems.isEmpty()) {
1156         return;
1157     }
1158
1159     QMimeData* data = m_model->createMimeData(selectedItems);
1160     if (!data) {
1161         return;
1162     }
1163
1164     // The created drag object will be owned and deleted
1165     // by QApplication::activeWindow().
1166     QDrag* drag = new QDrag(QApplication::activeWindow());
1167     drag->setMimeData(data);
1168
1169     const QPixmap pixmap = m_view->createDragPixmap(selectedItems);
1170     drag->setPixmap(pixmap);
1171
1172     const QPoint hotSpot(pixmap.width() / 2, 0);
1173     drag->setHotSpot(hotSpot);
1174
1175     drag->exec(Qt::MoveAction | Qt::CopyAction | Qt::LinkAction, Qt::CopyAction);
1176     QAccessible::updateAccessibility(view(), 0, QAccessible::DragDropStart);
1177 }
1178
1179 KItemListWidget* KItemListController::hoveredWidget() const
1180 {
1181     Q_ASSERT(m_view);
1182
1183     foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
1184         if (widget->isHovered()) {
1185             return widget;
1186         }
1187     }
1188
1189     return 0;
1190 }
1191
1192 KItemListWidget* KItemListController::widgetForPos(const QPointF& pos) const
1193 {
1194     Q_ASSERT(m_view);
1195
1196     foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
1197         const QPointF mappedPos = widget->mapFromItem(m_view, pos);
1198
1199         const bool hovered = widget->contains(mappedPos) &&
1200                              !widget->expansionToggleRect().contains(mappedPos);
1201         if (hovered) {
1202             return widget;
1203         }
1204     }
1205
1206     return 0;
1207 }
1208
1209 void KItemListController::updateKeyboardAnchor()
1210 {
1211     const bool validAnchor = m_keyboardAnchorIndex >= 0 &&
1212                              m_keyboardAnchorIndex < m_model->count() &&
1213                              keyboardAnchorPos(m_keyboardAnchorIndex) == m_keyboardAnchorPos;
1214     if (!validAnchor) {
1215         const int index = m_selectionManager->currentItem();
1216         m_keyboardAnchorIndex = index;
1217         m_keyboardAnchorPos = keyboardAnchorPos(index);
1218     }
1219 }
1220
1221 int KItemListController::nextRowIndex(int index) const
1222 {
1223     if (m_keyboardAnchorIndex < 0) {
1224         return index;
1225     }
1226
1227     const int maxIndex = m_model->count() - 1;
1228     if (index == maxIndex) {
1229         return index;
1230     }
1231
1232     // Calculate the index of the last column inside the row of the current index
1233     int lastColumnIndex = index;
1234     while (keyboardAnchorPos(lastColumnIndex + 1) > keyboardAnchorPos(lastColumnIndex)) {
1235         ++lastColumnIndex;
1236         if (lastColumnIndex >= maxIndex) {
1237             return index;
1238         }
1239     }
1240
1241     // Based on the last column index go to the next row and calculate the nearest index
1242     // that is below the current index
1243     int nextRowIndex = lastColumnIndex + 1;
1244     int searchIndex = nextRowIndex;
1245     qreal minDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(nextRowIndex));
1246     while (searchIndex < maxIndex && keyboardAnchorPos(searchIndex + 1) > keyboardAnchorPos(searchIndex)) {
1247         ++searchIndex;
1248         const qreal searchDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(searchIndex));
1249         if (searchDiff < minDiff) {
1250             minDiff = searchDiff;
1251             nextRowIndex = searchIndex;
1252         }
1253     }
1254
1255     return nextRowIndex;
1256 }
1257
1258 int KItemListController::previousRowIndex(int index) const
1259 {
1260     if (m_keyboardAnchorIndex < 0 || index == 0) {
1261         return index;
1262     }
1263
1264     // Calculate the index of the first column inside the row of the current index
1265     int firstColumnIndex = index;
1266     while (keyboardAnchorPos(firstColumnIndex - 1) < keyboardAnchorPos(firstColumnIndex)) {
1267         --firstColumnIndex;
1268         if (firstColumnIndex <= 0) {
1269             return index;
1270         }
1271     }
1272
1273     // Based on the first column index go to the previous row and calculate the nearest index
1274     // that is above the current index
1275     int previousRowIndex = firstColumnIndex - 1;
1276     int searchIndex = previousRowIndex;
1277     qreal minDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(previousRowIndex));
1278     while (searchIndex > 0 && keyboardAnchorPos(searchIndex - 1) < keyboardAnchorPos(searchIndex)) {
1279         --searchIndex;
1280         const qreal searchDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(searchIndex));
1281         if (searchDiff < minDiff) {
1282             minDiff = searchDiff;
1283             previousRowIndex = searchIndex;
1284         }
1285     }
1286
1287     return previousRowIndex;
1288 }
1289
1290 qreal KItemListController::keyboardAnchorPos(int index) const
1291 {
1292     const QRectF itemRect = m_view->itemRect(index);
1293     if (!itemRect.isEmpty()) {
1294         return (m_view->scrollOrientation() == Qt::Vertical) ? itemRect.x() : itemRect.y();
1295     }
1296
1297     return 0;
1298 }
1299
1300 void KItemListController::updateExtendedSelectionRegion()
1301 {
1302     if (m_view) {
1303         const bool extend = (m_selectionBehavior != MultiSelection);
1304         KItemListStyleOption option = m_view->styleOption();
1305         if (option.extendedSelectionRegion != extend) {
1306             option.extendedSelectionRegion = extend;
1307             m_view->setStyleOption(option);
1308         }
1309     }
1310 }
1311