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
  27 #include "kitemlistview.h"
  28 #include "kitemlistselectionmanager.h"
  29
  30 #include "private/kitemlistrubberband.h"
  31 #include "private/kitemlistkeyboardsearchmanager.h"
  32
  33 #include <QApplication>
  34 #include <QDrag>
  35 #include <QEvent>
  36 #include <QGraphicsScene>
  37 #include <QGraphicsSceneEvent>
  38 #include <QGraphicsView>
  39 #include <QMimeData>
  40 #include <QTimer>
  41 #include <QAccessible>
  42
  43 KItemListController::KItemListController(KItemModelBase* model, KItemListView* view, QObject* parent) :
  44     QObject(parent),
  45     m_singleClickActivationEnforced(false),
  46     m_selectionTogglePressed(false),
  47     m_clearSelectionIfItemsAreNotDragged(false),
  48     m_selectionBehavior(NoSelection),
  49     m_autoActivationBehavior(ActivationAndExpansion),
  50     m_mouseDoubleClickAction(ActivateItemOnly),
  51     m_model(0),
  52     m_view(0),
  53     m_selectionManager(new KItemListSelectionManager(this)),
  54     m_keyboardManager(new KItemListKeyboardSearchManager(this)),
  55     m_pressedIndex(-1),
  56     m_pressedMousePos(),
  57     m_autoActivationTimer(0),
  58     m_oldSelection(),
  59     m_keyboardAnchorIndex(-1),
  60     m_keyboardAnchorPos(0)
  61 {
  62     connect(m_keyboardManager, &KItemListKeyboardSearchManager::changeCurrentItem,
  63             this, &KItemListController::slotChangeCurrentItem);
  64     connect(m_selectionManager, &KItemListSelectionManager::currentChanged,
  65             m_keyboardManager, &KItemListKeyboardSearchManager::slotCurrentChanged);
  66
  67     m_autoActivationTimer = new QTimer(this);
  68     m_autoActivationTimer->setSingleShot(true);
  69     m_autoActivationTimer->setInterval(-1);
  70     connect(m_autoActivationTimer, &QTimer::timeout, this, &KItemListController::slotAutoActivationTimeout);
  71
  72     setModel(model);
  73     setView(view);
  74 }
  75
  76 KItemListController::~KItemListController()
  77 {
  78     setView(0);
  79     Q_ASSERT(!m_view);
  80
  81     setModel(0);
  82     Q_ASSERT(!m_model);
  83 }
  84
  85 void KItemListController::setModel(KItemModelBase* model)
  86 {
  87     if (m_model == model) {
  88         return;
  89     }
  90
  91     KItemModelBase* oldModel = m_model;
  92     if (oldModel) {
  93         oldModel->deleteLater();
  94     }
  95
  96     m_model = model;
  97     if (m_model) {
  98         m_model->setParent(this);
  99     }
 100
 101     if (m_view) {
 102         m_view->setModel(m_model);
 103     }
 104
 105     m_selectionManager->setModel(m_model);
 106
 107     emit modelChanged(m_model, oldModel);
 108 }
 109
 110 KItemModelBase* KItemListController::model() const
 111 {
 112     return m_model;
 113 }
 114
 115 KItemListSelectionManager* KItemListController::selectionManager() const
 116 {
 117     return m_selectionManager;
 118 }
 119
 120 void KItemListController::setView(KItemListView* view)
 121 {
 122     if (m_view == view) {
 123         return;
 124     }
 125
 126     KItemListView* oldView = m_view;
 127     if (oldView) {
 128         disconnect(oldView, &KItemListView::scrollOffsetChanged, this, &KItemListController::slotViewScrollOffsetChanged);
 129         oldView->deleteLater();
 130     }
 131
 132     m_view = view;
 133
 134     if (m_view) {
 135         m_view->setParent(this);
 136         m_view->setController(this);
 137         m_view->setModel(m_model);
 138         connect(m_view, &KItemListView::scrollOffsetChanged, this, &KItemListController::slotViewScrollOffsetChanged);
 139         updateExtendedSelectionRegion();
 140     }
 141
 142     emit viewChanged(m_view, oldView);
 143 }
 144
 145 KItemListView* KItemListController::view() const
 146 {
 147     return m_view;
 148 }
 149
 150 void KItemListController::setSelectionBehavior(SelectionBehavior behavior)
 151 {
 152     m_selectionBehavior = behavior;
 153     updateExtendedSelectionRegion();
 154 }
 155
 156 KItemListController::SelectionBehavior KItemListController::selectionBehavior() const
 157 {
 158     return m_selectionBehavior;
 159 }
 160
 161 void KItemListController::setAutoActivationBehavior(AutoActivationBehavior behavior)
 162 {
 163     m_autoActivationBehavior = behavior;
 164 }
 165
 166 KItemListController::AutoActivationBehavior KItemListController::autoActivationBehavior() const
 167 {
 168     return m_autoActivationBehavior;
 169 }
 170
 171 void KItemListController::setMouseDoubleClickAction(MouseDoubleClickAction action)
 172 {
 173     m_mouseDoubleClickAction = action;
 174 }
 175
 176 KItemListController::MouseDoubleClickAction KItemListController::mouseDoubleClickAction() const
 177 {
 178     return m_mouseDoubleClickAction;
 179 }
 180
 181 void KItemListController::setAutoActivationDelay(int delay)
 182 {
 183     m_autoActivationTimer->setInterval(delay);
 184 }
 185
 186 int KItemListController::autoActivationDelay() const
 187 {
 188     return m_autoActivationTimer->interval();
 189 }
 190
 191 void KItemListController::setSingleClickActivationEnforced(bool singleClick)
 192 {
 193     m_singleClickActivationEnforced = singleClick;
 194 }
 195
 196 bool KItemListController::singleClickActivationEnforced() const
 197 {
 198     return m_singleClickActivationEnforced;
 199 }
 200
 201 bool KItemListController::showEvent(QShowEvent* event)
 202 {
 203     Q_UNUSED(event);
 204     return false;
 205 }
 206
 207 bool KItemListController::hideEvent(QHideEvent* event)
 208 {
 209     Q_UNUSED(event);
 210     return false;
 211 }
 212
 213 bool KItemListController::keyPressEvent(QKeyEvent* event)
 214 {
 215     int index = m_selectionManager->currentItem();
 216     int key = event->key();
 217
 218     // Handle the expanding/collapsing of items
 219     if (m_view->supportsItemExpanding() && m_model->isExpandable(index)) {
 220         if (key == Qt::Key_Right) {
 221             if (m_model->setExpanded(index, true)) {
 222                 return true;
 223             }
 224         } else if (key == Qt::Key_Left) {
 225             if (m_model->setExpanded(index, false)) {
 226                 return true;
 227             }
 228         }
 229     }
 230
 231     const bool shiftPressed = event->modifiers() & Qt::ShiftModifier;
 232     const bool controlPressed = event->modifiers() & Qt::ControlModifier;
 233     const bool shiftOrControlPressed = shiftPressed || controlPressed;
 234
 235     const int itemCount = m_model->count();
 236
 237     // For horizontal scroll orientation, transform
 238     // the arrow keys to simplify the event handling.
 239     if (m_view->scrollOrientation() == Qt::Horizontal) {
 240         switch (key) {
 241         case Qt::Key_Up:    key = Qt::Key_Left; break;
 242         case Qt::Key_Down:  key = Qt::Key_Right; break;
 243         case Qt::Key_Left:  key = Qt::Key_Up; break;
 244         case Qt::Key_Right: key = Qt::Key_Down; break;
 245         default:            break;
 246         }
 247     }
 248
 249     const bool selectSingleItem = m_selectionBehavior != NoSelection &&
 250                                   itemCount == 1 &&
 251                                   (key == Qt::Key_Home || key == Qt::Key_End  ||
 252                                    key == Qt::Key_Up   || key == Qt::Key_Down ||
 253                                    key == Qt::Key_Left || key == Qt::Key_Right);
 254     if (selectSingleItem) {
 255         const int current = m_selectionManager->currentItem();
 256         m_selectionManager->setSelected(current);
 257         return true;
 258     }
 259
 260     switch (key) {
 261     case Qt::Key_Home:
 262         index = 0;
 263         m_keyboardAnchorIndex = index;
 264         m_keyboardAnchorPos = keyboardAnchorPos(index);
 265         break;
 266
 267     case Qt::Key_End:
 268         index = itemCount - 1;
 269         m_keyboardAnchorIndex = index;
 270         m_keyboardAnchorPos = keyboardAnchorPos(index);
 271         break;
 272
 273     case Qt::Key_Left:
 274         if (index > 0) {
 275             const int expandedParentsCount = m_model->expandedParentsCount(index);
 276             if (expandedParentsCount == 0) {
 277                 --index;
 278             } else {
 279                 // Go to the parent of the current item.
 280                 do {
 281                     --index;
 282                 } while (index > 0 && m_model->expandedParentsCount(index) == expandedParentsCount);
 283             }
 284             m_keyboardAnchorIndex = index;
 285             m_keyboardAnchorPos = keyboardAnchorPos(index);
 286         }
 287         break;
 288
 289     case Qt::Key_Right:
 290         if (index < itemCount - 1) {
 291             ++index;
 292             m_keyboardAnchorIndex = index;
 293             m_keyboardAnchorPos = keyboardAnchorPos(index);
 294         }
 295         break;
 296
 297     case Qt::Key_Up:
 298         updateKeyboardAnchor();
 299         index = previousRowIndex(index);
 300         break;
 301
 302     case Qt::Key_Down:
 303         updateKeyboardAnchor();
 304         index = nextRowIndex(index);
 305         break;
 306
 307     case Qt::Key_PageUp:
 308         if (m_view->scrollOrientation() == Qt::Horizontal) {
 309             // The new current index should correspond to the first item in the current column.
 310             int newIndex = qMax(index - 1, 0);
 311             while (newIndex != index && m_view->itemRect(newIndex).topLeft().y() < m_view->itemRect(index).topLeft().y()) {
 312                 index = newIndex;
 313                 newIndex = qMax(index - 1, 0);
 314             }
 315             m_keyboardAnchorIndex = index;
 316             m_keyboardAnchorPos = keyboardAnchorPos(index);
 317         } else {
 318             const qreal currentItemBottom = m_view->itemRect(index).bottomLeft().y();
 319             const qreal height = m_view->geometry().height();
 320
 321             // The new current item should be the first item in the current
 322             // column whose itemRect's top coordinate is larger than targetY.
 323             const qreal targetY = currentItemBottom - height;
 324
 325             updateKeyboardAnchor();
 326             int newIndex = previousRowIndex(index);
 327             do {
 328                 index = newIndex;
 329                 updateKeyboardAnchor();
 330                 newIndex = previousRowIndex(index);
 331             } while (m_view->itemRect(newIndex).topLeft().y() > targetY && newIndex != index);
 332         }
 333         break;
 334
 335     case Qt::Key_PageDown:
 336         if (m_view->scrollOrientation() == Qt::Horizontal) {
 337             // The new current index should correspond to the last item in the current column.
 338             int newIndex = qMin(index + 1, m_model->count() - 1);
 339             while (newIndex != index && m_view->itemRect(newIndex).topLeft().y() > m_view->itemRect(index).topLeft().y()) {
 340                 index = newIndex;
 341                 newIndex = qMin(index + 1, m_model->count() - 1);
 342             }
 343             m_keyboardAnchorIndex = index;
 344             m_keyboardAnchorPos = keyboardAnchorPos(index);
 345         } else {
 346             const qreal currentItemTop = m_view->itemRect(index).topLeft().y();
 347             const qreal height = m_view->geometry().height();
 348
 349             // The new current item should be the last item in the current
 350             // column whose itemRect's bottom coordinate is smaller than targetY.
 351             const qreal targetY = currentItemTop + height;
 352
 353             updateKeyboardAnchor();
 354             int newIndex = nextRowIndex(index);
 355             do {
 356                 index = newIndex;
 357                 updateKeyboardAnchor();
 358                 newIndex = nextRowIndex(index);
 359             } while (m_view->itemRect(newIndex).bottomLeft().y() < targetY && newIndex != index);
 360         }
 361         break;
 362
 363     case Qt::Key_Enter:
 364     case Qt::Key_Return: {
 365         const KItemSet selectedItems = m_selectionManager->selectedItems();
 366         if (selectedItems.count() >= 2) {
 367             emit itemsActivated(selectedItems);
 368         } else if (selectedItems.count() == 1) {
 369             emit itemActivated(selectedItems.first());
 370         } else {
 371             emit itemActivated(index);
 372         }
 373         break;
 374     }
 375
 376     case Qt::Key_Menu: {
 377         // Emit the signal itemContextMenuRequested() in case if at least one
 378         // item is selected. Otherwise the signal viewContextMenuRequested() will be emitted.
 379         const KItemSet selectedItems = m_selectionManager->selectedItems();
 380         int index = -1;
 381         if (selectedItems.count() >= 2) {
 382             const int currentItemIndex = m_selectionManager->currentItem();
 383             index = selectedItems.contains(currentItemIndex)
 384                     ? currentItemIndex : selectedItems.first();
 385         } else if (selectedItems.count() == 1) {
 386             index = selectedItems.first();
 387         }
 388
 389         if (index >= 0) {
 390             const QRectF contextRect = m_view->itemContextRect(index);
 391             const QPointF pos(m_view->scene()->views().first()->mapToGlobal(contextRect.bottomRight().toPoint()));
 392             emit itemContextMenuRequested(index, pos);
 393         } else {
 394             emit viewContextMenuRequested(QCursor::pos());
 395         }
 396         break;
 397     }
 398
 399     case Qt::Key_Escape:
 400         if (m_selectionBehavior != SingleSelection) {
 401             m_selectionManager->clearSelection();
 402         }
 403         m_keyboardManager->cancelSearch();
 404         emit escapePressed();
 405         break;
 406
 407     case Qt::Key_Space:
 408         if (m_selectionBehavior == MultiSelection) {
 409             if (controlPressed) {
 410                 // Toggle the selection state of the current item.
 411                 m_selectionManager->endAnchoredSelection();
 412                 m_selectionManager->setSelected(index, 1, KItemListSelectionManager::Toggle);
 413                 m_selectionManager->beginAnchoredSelection(index);
 414                 break;
 415             } else {
 416                 // Select the current item if it is not selected yet.
 417                 const int current = m_selectionManager->currentItem();
 418                 if (!m_selectionManager->isSelected(current)) {
 419                     m_selectionManager->setSelected(current);
 420                     break;
 421                 }
 422             }
 423         }
 424         // Fall through to the default case and add the Space to the current search string.
 425
 426     default:
 427         m_keyboardManager->addKeys(event->text());
 428         // Make sure unconsumed events get propagated up the chain. #302329
 429         event->ignore();
 430         return false;
 431     }
 432
 433     if (m_selectionManager->currentItem() != index) {
 434         switch (m_selectionBehavior) {
 435         case NoSelection:
 436             m_selectionManager->setCurrentItem(index);
 437             break;
 438
 439         case SingleSelection:
 440             m_selectionManager->setCurrentItem(index);
 441             m_selectionManager->clearSelection();
 442             m_selectionManager->setSelected(index, 1);
 443             break;
 444
 445         case MultiSelection:
 446             if (controlPressed) {
 447                 m_selectionManager->endAnchoredSelection();
 448             }
 449
 450             m_selectionManager->setCurrentItem(index);
 451
 452             if (!shiftOrControlPressed) {
 453                 m_selectionManager->clearSelection();
 454                 m_selectionManager->setSelected(index, 1);
 455             }
 456
 457             if (!shiftPressed) {
 458                 m_selectionManager->beginAnchoredSelection(index);
 459             }
 460             break;
 461         }
 462
 463         m_view->scrollToItem(index);
 464     }
 465     return true;
 466 }
 467
 468 void KItemListController::slotChangeCurrentItem(const QString& text, bool searchFromNextItem)
 469 {
 470     if (!m_model || m_model->count() == 0) {
 471         return;
 472     }
 473     const int currentIndex = m_selectionManager->currentItem();
 474     int index;
 475     if (searchFromNextItem) {
 476         index = m_model->indexForKeyboardSearch(text, (currentIndex + 1) % m_model->count());
 477     } else {
 478         index = m_model->indexForKeyboardSearch(text, currentIndex);
 479     }
 480     if (index >= 0) {
 481         m_selectionManager->setCurrentItem(index);
 482
 483         if (m_selectionBehavior != NoSelection) {
 484             m_selectionManager->clearSelection();
 485             m_selectionManager->setSelected(index, 1);
 486             m_selectionManager->beginAnchoredSelection(index);
 487         }
 488
 489         m_view->scrollToItem(index);
 490     }
 491 }
 492
 493 void KItemListController::slotAutoActivationTimeout()
 494 {
 495     if (!m_model || !m_view) {
 496         return;
 497     }
 498
 499     const int index = m_autoActivationTimer->property("index").toInt();
 500     if (index < 0 || index >= m_model->count()) {
 501         return;
 502     }
 503
 504     /* m_view->isUnderMouse() fixes a bug in the Folder-View-Panel and in the
 505      * Places-Panel.
 506      *
 507      * Bug: When you drag a file onto a Folder-View-Item or a Places-Item and
 508      * then move away before the auto-activation timeout triggers, than the
 509      * item still becomes activated/expanded.
 510      *
 511      * See Bug 293200 and 305783
 512      */
 513     if (m_model->supportsDropping(index) && m_view->isUnderMouse()) {
 514         if (m_view->supportsItemExpanding() && m_model->isExpandable(index)) {
 515             const bool expanded = m_model->isExpanded(index);
 516             m_model->setExpanded(index, !expanded);
 517         } else if (m_autoActivationBehavior != ExpansionOnly) {
 518             emit itemActivated(index);
 519         }
 520     }
 521 }
 522
 523 bool KItemListController::inputMethodEvent(QInputMethodEvent* event)
 524 {
 525     Q_UNUSED(event);
 526     return false;
 527 }
 528
 529 bool KItemListController::mousePressEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 530 {
 531     if (!m_view) {
 532         return false;
 533     }
 534
 535     m_pressedMousePos = transform.map(event->pos());
 536     m_pressedIndex = m_view->itemAt(m_pressedMousePos);
 537     emit mouseButtonPressed(m_pressedIndex, event->buttons());
 538
 539     if (event->buttons() & (Qt::BackButton | Qt::ForwardButton)) {
 540         // Do not select items when clicking the back/forward buttons, see
 541         // https://bugs.kde.org/show_bug.cgi?id=327412.
 542         return true;
 543     }
 544
 545     if (m_view->isAboveExpansionToggle(m_pressedIndex, m_pressedMousePos)) {
 546         m_selectionManager->endAnchoredSelection();
 547         m_selectionManager->setCurrentItem(m_pressedIndex);
 548         m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 549         return true;
 550     }
 551
 552     m_selectionTogglePressed = m_view->isAboveSelectionToggle(m_pressedIndex, m_pressedMousePos);
 553     if (m_selectionTogglePressed) {
 554         m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
 555         // The previous anchored selection has been finished already in
 556         // KItemListSelectionManager::setSelected(). We can safely change
 557         // the current item and start a new anchored selection now.
 558         m_selectionManager->setCurrentItem(m_pressedIndex);
 559         m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 560         return true;
 561     }
 562
 563     const bool shiftPressed = event->modifiers() & Qt::ShiftModifier;
 564     const bool controlPressed = event->modifiers() & Qt::ControlModifier;
 565
 566     // The previous selection is cleared if either
 567     // 1. The selection mode is SingleSelection, or
 568     // 2. the selection mode is MultiSelection, and *none* of the following conditions are met:
 569     //    a) Shift or Control are pressed.
 570     //    b) The clicked item is selected already. In that case, the user might want to:
 571     //       - start dragging multiple items, or
 572     //       - open the context menu and perform an action for all selected items.
 573     const bool shiftOrControlPressed = shiftPressed || controlPressed;
 574     const bool pressedItemAlreadySelected = m_pressedIndex >= 0 && m_selectionManager->isSelected(m_pressedIndex);
 575     const bool clearSelection = m_selectionBehavior == SingleSelection ||
 576                                 (!shiftOrControlPressed && !pressedItemAlreadySelected);
 577     if (clearSelection) {
 578         m_selectionManager->clearSelection();
 579     } else if (pressedItemAlreadySelected && !shiftOrControlPressed && (event->buttons() & Qt::LeftButton)) {
 580         // The user might want to start dragging multiple items, but if he clicks the item
 581         // in order to trigger it instead, the other selected items must be deselected.
 582         // However, we do not know yet what the user is going to do.
 583         // -> remember that the user pressed an item which had been selected already and
 584         //    clear the selection in mouseReleaseEvent(), unless the items are dragged.
 585         m_clearSelectionIfItemsAreNotDragged = true;
 586     }
 587
 588     if (!shiftPressed) {
 589         // Finish the anchored selection before the current index is changed
 590         m_selectionManager->endAnchoredSelection();
 591     }
 592
 593     if (m_pressedIndex >= 0) {
 594         m_selectionManager->setCurrentItem(m_pressedIndex);
 595
 596         switch (m_selectionBehavior) {
 597         case NoSelection:
 598             break;
 599
 600         case SingleSelection:
 601             m_selectionManager->setSelected(m_pressedIndex);
 602             break;
 603
 604         case MultiSelection:
 605             if (controlPressed && !shiftPressed) {
 606                 m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
 607                 m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 608             } else if (!shiftPressed || !m_selectionManager->isAnchoredSelectionActive()) {
 609                 // Select the pressed item and start a new anchored selection
 610                 m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Select);
 611                 m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 612             }
 613             break;
 614
 615         default:
 616             Q_ASSERT(false);
 617             break;
 618         }
 619
 620         if (event->buttons() & Qt::RightButton) {
 621             emit itemContextMenuRequested(m_pressedIndex, event->screenPos());
 622         }
 623
 624         return true;
 625     }
 626
 627     if (event->buttons() & Qt::RightButton) {
 628         const QRectF headerBounds = m_view->headerBoundaries();
 629         if (headerBounds.contains(event->pos())) {
 630             emit headerContextMenuRequested(event->screenPos());
 631         } else {
 632             emit viewContextMenuRequested(event->screenPos());
 633         }
 634         return true;
 635     }
 636
 637     if (m_selectionBehavior == MultiSelection) {
 638         QPointF startPos = m_pressedMousePos;
 639         if (m_view->scrollOrientation() == Qt::Vertical) {
 640             startPos.ry() += m_view->scrollOffset();
 641             if (m_view->itemSize().width() < 0) {
 642                 // Use a special rubberband for views that have only one column and
 643                 // expand the rubberband to use the whole width of the view.
 644                 startPos.setX(0);
 645             }
 646         } else {
 647             startPos.rx() += m_view->scrollOffset();
 648         }
 649
 650         m_oldSelection = m_selectionManager->selectedItems();
 651         KItemListRubberBand* rubberBand = m_view->rubberBand();
 652         rubberBand->setStartPosition(startPos);
 653         rubberBand->setEndPosition(startPos);
 654         rubberBand->setActive(true);
 655         connect(rubberBand, &KItemListRubberBand::endPositionChanged, this, &KItemListController::slotRubberBandChanged);
 656         m_view->setAutoScroll(true);
 657     }
 658
 659     return false;
 660 }
 661
 662 bool KItemListController::mouseMoveEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 663 {
 664     if (!m_view) {
 665         return false;
 666     }
 667
 668     if (m_pressedIndex >= 0) {
 669         // Check whether a dragging should be started
 670         if (event->buttons() & Qt::LeftButton) {
 671             const QPointF pos = transform.map(event->pos());
 672             if ((pos - m_pressedMousePos).manhattanLength() >= QApplication::startDragDistance()) {
 673                 if (!m_selectionManager->isSelected(m_pressedIndex)) {
 674                     // Always assure that the dragged item gets selected. Usually this is already
 675                     // done on the mouse-press event, but when using the selection-toggle on a
 676                     // selected item the dragged item is not selected yet.
 677                     m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
 678                 } else {
 679                     // A selected item has been clicked to drag all selected items
 680                     // -> the selection should not be cleared when the mouse button is released.
 681                     m_clearSelectionIfItemsAreNotDragged = false;
 682                 }
 683
 684                 startDragging();
 685             }
 686         }
 687     } else {
 688         KItemListRubberBand* rubberBand = m_view->rubberBand();
 689         if (rubberBand->isActive()) {
 690             QPointF endPos = transform.map(event->pos());
 691
 692             // Update the current item.
 693             const int newCurrent = m_view->itemAt(endPos);
 694             if (newCurrent >= 0) {
 695                 // It's expected that the new current index is also the new anchor (bug 163451).
 696                 m_selectionManager->endAnchoredSelection();
 697                 m_selectionManager->setCurrentItem(newCurrent);
 698                 m_selectionManager->beginAnchoredSelection(newCurrent);
 699             }
 700
 701             if (m_view->scrollOrientation() == Qt::Vertical) {
 702                 endPos.ry() += m_view->scrollOffset();
 703                 if (m_view->itemSize().width() < 0) {
 704                     // Use a special rubberband for views that have only one column and
 705                     // expand the rubberband to use the whole width of the view.
 706                     endPos.setX(m_view->size().width());
 707                 }
 708             } else {
 709                 endPos.rx() += m_view->scrollOffset();
 710             }
 711             rubberBand->setEndPosition(endPos);
 712         }
 713     }
 714
 715     return false;
 716 }
 717
 718 bool KItemListController::mouseReleaseEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 719 {
 720     if (!m_view) {
 721         return false;
 722     }
 723
 724     emit mouseButtonReleased(m_pressedIndex, event->buttons());
 725
 726     const bool isAboveSelectionToggle = m_view->isAboveSelectionToggle(m_pressedIndex, m_pressedMousePos);
 727     if (isAboveSelectionToggle) {
 728         m_selectionTogglePressed = false;
 729         return true;
 730     }
 731
 732     if (!isAboveSelectionToggle && m_selectionTogglePressed) {
 733         m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
 734         m_selectionTogglePressed = false;
 735         return true;
 736     }
 737
 738     const bool shiftOrControlPressed = event->modifiers() & Qt::ShiftModifier ||
 739                                        event->modifiers() & Qt::ControlModifier;
 740
 741     KItemListRubberBand* rubberBand = m_view->rubberBand();
 742     if (rubberBand->isActive()) {
 743         disconnect(rubberBand, &KItemListRubberBand::endPositionChanged, this, &KItemListController::slotRubberBandChanged);
 744         rubberBand->setActive(false);
 745         m_oldSelection.clear();
 746         m_view->setAutoScroll(false);
 747     }
 748
 749     const QPointF pos = transform.map(event->pos());
 750     const int index = m_view->itemAt(pos);
 751
 752     if (index >= 0 && index == m_pressedIndex) {
 753         // The release event is done above the same item as the press event
 754
 755         if (m_clearSelectionIfItemsAreNotDragged) {
 756             // A selected item has been clicked, but no drag operation has been started
 757             // -> clear the rest of the selection.
 758             m_selectionManager->clearSelection();
 759             m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Select);
 760             m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 761         }
 762
 763         if (event->button() & Qt::LeftButton) {
 764             bool emitItemActivated = true;
 765             if (m_view->isAboveExpansionToggle(index, pos)) {
 766                 const bool expanded = m_model->isExpanded(index);
 767                 m_model->setExpanded(index, !expanded);
 768
 769                 emit itemExpansionToggleClicked(index);
 770                 emitItemActivated = false;
 771             } else if (shiftOrControlPressed) {
 772                 // The mouse click should only update the selection, not trigger the item
 773                 emitItemActivated = false;
 774             } else if (!(m_view->style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick) || m_singleClickActivationEnforced)) {
 775                 emitItemActivated = false;
 776             }
 777             if (emitItemActivated) {
 778                 emit itemActivated(index);
 779             }
 780         } else if (event->button() & Qt::MidButton) {
 781             emit itemMiddleClicked(index);
 782         }
 783     }
 784
 785     m_pressedMousePos = QPointF();
 786     m_pressedIndex = -1;
 787     m_clearSelectionIfItemsAreNotDragged = false;
 788     return false;
 789 }
 790
 791 bool KItemListController::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 792 {
 793     const QPointF pos = transform.map(event->pos());
 794     const int index = m_view->itemAt(pos);
 795
 796     // Expand item if desired - See Bug 295573
 797     if (m_mouseDoubleClickAction != ActivateItemOnly) {
 798         if (m_view && m_model && m_view->supportsItemExpanding() && m_model->isExpandable(index)) {
 799             const bool expanded = m_model->isExpanded(index);
 800             m_model->setExpanded(index, !expanded);
 801         }
 802     }
 803
 804     bool emitItemActivated = !(m_view->style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick) || m_singleClickActivationEnforced) &&
 805                              (event->button() & Qt::LeftButton) &&
 806                              index >= 0 && index < m_model->count();
 807     if (emitItemActivated) {
 808         emit itemActivated(index);
 809     }
 810     return false;
 811 }
 812
 813 bool KItemListController::dragEnterEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 814 {
 815     Q_UNUSED(event);
 816     Q_UNUSED(transform);
 817     return false;
 818 }
 819
 820 bool KItemListController::dragLeaveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 821 {
 822     Q_UNUSED(event);
 823     Q_UNUSED(transform);
 824
 825     m_view->setAutoScroll(false);
 826     m_view->hideDropIndicator();
 827
 828     KItemListWidget* widget = hoveredWidget();
 829     if (widget) {
 830         widget->setHovered(false);
 831         emit itemUnhovered(widget->index());
 832     }
 833     return false;
 834 }
 835
 836 bool KItemListController::dragMoveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 837 {
 838     if (!m_model || !m_view) {
 839         return false;
 840     }
 841
 842     event->acceptProposedAction();
 843
 844     KItemListWidget* oldHoveredWidget = hoveredWidget();
 845
 846     const QPointF pos = transform.map(event->pos());
 847     KItemListWidget* newHoveredWidget = widgetForPos(pos);
 848
 849     if (oldHoveredWidget != newHoveredWidget) {
 850         m_autoActivationTimer->stop();
 851
 852         if (oldHoveredWidget) {
 853             oldHoveredWidget->setHovered(false);
 854             emit itemUnhovered(oldHoveredWidget->index());
 855         }
 856     }
 857
 858     if (newHoveredWidget) {
 859         bool droppingBetweenItems = false;
 860         if (m_model->sortRole().isEmpty()) {
 861             // The model supports inserting items between other items.
 862             droppingBetweenItems = (m_view->showDropIndicator(pos) >= 0);
 863         }
 864
 865         const int index = newHoveredWidget->index();
 866         if (!droppingBetweenItems) {
 867             if (m_model->supportsDropping(index)) {
 868                 // Something has been dragged on an item.
 869                 m_view->hideDropIndicator();
 870                 if (!newHoveredWidget->isHovered()) {
 871                     newHoveredWidget->setHovered(true);
 872                     emit itemHovered(index);
 873                 }
 874
 875                 if (!m_autoActivationTimer->isActive() && m_autoActivationTimer->interval() >= 0) {
 876                     m_autoActivationTimer->setProperty("index", index);
 877                     m_autoActivationTimer->start();
 878                 }
 879             }
 880         } else {
 881             m_autoActivationTimer->stop();
 882             if (newHoveredWidget && newHoveredWidget->isHovered()) {
 883                 newHoveredWidget->setHovered(false);
 884                 emit itemUnhovered(index);
 885             }
 886         }
 887     } else {
 888         m_view->hideDropIndicator();
 889     }
 890
 891     return false;
 892 }
 893
 894 bool KItemListController::dropEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 895 {
 896     if (!m_view) {
 897         return false;
 898     }
 899
 900     m_autoActivationTimer->stop();
 901     m_view->setAutoScroll(false);
 902
 903     const QPointF pos = transform.map(event->pos());
 904
 905     int dropAboveIndex = -1;
 906     if (m_model->sortRole().isEmpty()) {
 907         // The model supports inserting of items between other items.
 908         dropAboveIndex = m_view->showDropIndicator(pos);
 909     }
 910
 911     if (dropAboveIndex >= 0) {
 912         // Something has been dropped between two items.
 913         m_view->hideDropIndicator();
 914         emit aboveItemDropEvent(dropAboveIndex, event);
 915     } else {
 916         // Something has been dropped on an item or on an empty part of the view.
 917         emit itemDropEvent(m_view->itemAt(pos), event);
 918     }
 919
 920     QAccessibleEvent accessibilityEvent(view(), QAccessible::DragDropEnd);
 921     QAccessible::updateAccessibility(&accessibilityEvent);
 922
 923     return true;
 924 }
 925
 926 bool KItemListController::hoverEnterEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 927 {
 928     Q_UNUSED(event);
 929     Q_UNUSED(transform);
 930     return false;
 931 }
 932
 933 bool KItemListController::hoverMoveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 934 {
 935     Q_UNUSED(transform);
 936     if (!m_model || !m_view) {
 937         return false;
 938     }
 939
 940     KItemListWidget* oldHoveredWidget = hoveredWidget();
 941     const QPointF pos = transform.map(event->pos());
 942     KItemListWidget* newHoveredWidget = widgetForPos(pos);
 943
 944     if (oldHoveredWidget != newHoveredWidget) {
 945         if (oldHoveredWidget) {
 946             oldHoveredWidget->setHovered(false);
 947             emit itemUnhovered(oldHoveredWidget->index());
 948         }
 949
 950         if (newHoveredWidget) {
 951             newHoveredWidget->setHovered(true);
 952             const QPointF mappedPos = newHoveredWidget->mapFromItem(m_view, pos);
 953             newHoveredWidget->setHoverPosition(mappedPos);
 954             emit itemHovered(newHoveredWidget->index());
 955         }
 956     } else if (oldHoveredWidget) {
 957         const QPointF mappedPos = oldHoveredWidget->mapFromItem(m_view, pos);
 958         oldHoveredWidget->setHoverPosition(mappedPos);
 959     }
 960
 961     return false;
 962 }
 963
 964 bool KItemListController::hoverLeaveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 965 {
 966     Q_UNUSED(event);
 967     Q_UNUSED(transform);
 968
 969     if (!m_model || !m_view) {
 970         return false;
 971     }
 972
 973     foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
 974         if (widget->isHovered()) {
 975             widget->setHovered(false);
 976             emit itemUnhovered(widget->index());
 977         }
 978     }
 979     return false;
 980 }
 981
 982 bool KItemListController::wheelEvent(QGraphicsSceneWheelEvent* event, const QTransform& transform)
 983 {
 984     Q_UNUSED(event);
 985     Q_UNUSED(transform);
 986     return false;
 987 }
 988
 989 bool KItemListController::resizeEvent(QGraphicsSceneResizeEvent* event, const QTransform& transform)
 990 {
 991     Q_UNUSED(event);
 992     Q_UNUSED(transform);
 993     return false;
 994 }
 995
 996 bool KItemListController::processEvent(QEvent* event, const QTransform& transform)
 997 {
 998     if (!event) {
 999         return false;
1000     }
1001
1002     switch (event->type()) {
1003     case QEvent::KeyPress:
1004         return keyPressEvent(static_cast<QKeyEvent*>(event));
1005     case QEvent::InputMethod:
1006         return inputMethodEvent(static_cast<QInputMethodEvent*>(event));
1007     case QEvent::GraphicsSceneMousePress:
1008         return mousePressEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
1009     case QEvent::GraphicsSceneMouseMove:
1010         return mouseMoveEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
1011     case QEvent::GraphicsSceneMouseRelease:
1012         return mouseReleaseEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
1013     case QEvent::GraphicsSceneMouseDoubleClick:
1014         return mouseDoubleClickEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
1015     case QEvent::GraphicsSceneWheel:
1016          return wheelEvent(static_cast<QGraphicsSceneWheelEvent*>(event), QTransform());
1017     case QEvent::GraphicsSceneDragEnter:
1018         return dragEnterEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
1019     case QEvent::GraphicsSceneDragLeave:
1020         return dragLeaveEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
1021     case QEvent::GraphicsSceneDragMove:
1022         return dragMoveEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
1023     case QEvent::GraphicsSceneDrop:
1024         return dropEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
1025     case QEvent::GraphicsSceneHoverEnter:
1026         return hoverEnterEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
1027     case QEvent::GraphicsSceneHoverMove:
1028         return hoverMoveEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
1029     case QEvent::GraphicsSceneHoverLeave:
1030         return hoverLeaveEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
1031     case QEvent::GraphicsSceneResize:
1032         return resizeEvent(static_cast<QGraphicsSceneResizeEvent*>(event), transform);
1033     default:
1034         break;
1035     }
1036
1037     return false;
1038 }
1039
1040 void KItemListController::slotViewScrollOffsetChanged(qreal current, qreal previous)
1041 {
1042     if (!m_view) {
1043         return;
1044     }
1045
1046     KItemListRubberBand* rubberBand = m_view->rubberBand();
1047     if (rubberBand->isActive()) {
1048         const qreal diff = current - previous;
1049         // TODO: Ideally just QCursor::pos() should be used as
1050         // new end-position but it seems there is no easy way
1051         // to have something like QWidget::mapFromGlobal() for QGraphicsWidget
1052         // (... or I just missed an easy way to do the mapping)
1053         QPointF endPos = rubberBand->endPosition();
1054         if (m_view->scrollOrientation() == Qt::Vertical) {
1055             endPos.ry() += diff;
1056         } else {
1057             endPos.rx() += diff;
1058         }
1059
1060         rubberBand->setEndPosition(endPos);
1061     }
1062 }
1063
1064 void KItemListController::slotRubberBandChanged()
1065 {
1066     if (!m_view || !m_model || m_model->count() <= 0) {
1067         return;
1068     }
1069
1070     const KItemListRubberBand* rubberBand = m_view->rubberBand();
1071     const QPointF startPos = rubberBand->startPosition();
1072     const QPointF endPos = rubberBand->endPosition();
1073     QRectF rubberBandRect = QRectF(startPos, endPos).normalized();
1074
1075     const bool scrollVertical = (m_view->scrollOrientation() == Qt::Vertical);
1076     if (scrollVertical) {
1077         rubberBandRect.translate(0, -m_view->scrollOffset());
1078     } else {
1079         rubberBandRect.translate(-m_view->scrollOffset(), 0);
1080     }
1081
1082     if (!m_oldSelection.isEmpty()) {
1083         // Clear the old selection that was available before the rubberband has
1084         // been activated in case if no Shift- or Control-key are pressed
1085         const bool shiftOrControlPressed = QApplication::keyboardModifiers() & Qt::ShiftModifier ||
1086                                            QApplication::keyboardModifiers() & Qt::ControlModifier;
1087         if (!shiftOrControlPressed) {
1088             m_oldSelection.clear();
1089         }
1090     }
1091
1092     KItemSet selectedItems;
1093
1094     // Select all visible items that intersect with the rubberband
1095     foreach (const KItemListWidget* widget, m_view->visibleItemListWidgets()) {
1096         const int index = widget->index();
1097
1098         const QRectF widgetRect = m_view->itemRect(index);
1099         if (widgetRect.intersects(rubberBandRect)) {
1100             const QRectF iconRect = widget->iconRect().translated(widgetRect.topLeft());
1101             const QRectF textRect = widget->textRect().translated(widgetRect.topLeft());
1102             if (iconRect.intersects(rubberBandRect) || textRect.intersects(rubberBandRect)) {
1103                 selectedItems.insert(index);
1104             }
1105         }
1106     }
1107
1108     // Select all invisible items that intersect with the rubberband. Instead of
1109     // iterating all items only the area which might be touched by the rubberband
1110     // will be checked.
1111     const bool increaseIndex = scrollVertical ?
1112                                startPos.y() > endPos.y(): startPos.x() > endPos.x();
1113
1114     int index = increaseIndex ? m_view->lastVisibleIndex() + 1 : m_view->firstVisibleIndex() - 1;
1115     bool selectionFinished = false;
1116     do {
1117         const QRectF widgetRect = m_view->itemRect(index);
1118         if (widgetRect.intersects(rubberBandRect)) {
1119             selectedItems.insert(index);
1120         }
1121
1122         if (increaseIndex) {
1123             ++index;
1124             selectionFinished = (index >= m_model->count()) ||
1125                                 ( scrollVertical && widgetRect.top()  > rubberBandRect.bottom()) ||
1126                                 (!scrollVertical && widgetRect.left() > rubberBandRect.right());
1127         } else {
1128             --index;
1129             selectionFinished = (index < 0) ||
1130                                 ( scrollVertical && widgetRect.bottom() < rubberBandRect.top()) ||
1131                                 (!scrollVertical && widgetRect.right()  < rubberBandRect.left());
1132         }
1133     } while (!selectionFinished);
1134
1135     if (QApplication::keyboardModifiers() & Qt::ControlModifier) {
1136         // If Control is pressed, the selection state of all items in the rubberband is toggled.
1137         // Therefore, the new selection contains:
1138         // 1. All previously selected items which are not inside the rubberband, and
1139         // 2. all items inside the rubberband which have not been selected previously.
1140         m_selectionManager->setSelectedItems(m_oldSelection ^ selectedItems);
1141     }
1142     else {
1143         m_selectionManager->setSelectedItems(selectedItems + m_oldSelection);
1144     }
1145 }
1146
1147 void KItemListController::startDragging()
1148 {
1149     if (!m_view || !m_model) {
1150         return;
1151     }
1152
1153     const KItemSet selectedItems = m_selectionManager->selectedItems();
1154     if (selectedItems.isEmpty()) {
1155         return;
1156     }
1157
1158     QMimeData* data = m_model->createMimeData(selectedItems);
1159     if (!data) {
1160         return;
1161     }
1162
1163     // The created drag object will be owned and deleted
1164     // by QApplication::activeWindow().
1165     QDrag* drag = new QDrag(QApplication::activeWindow());
1166     drag->setMimeData(data);
1167
1168     const QPixmap pixmap = m_view->createDragPixmap(selectedItems);
1169     drag->setPixmap(pixmap);
1170
1171     const QPoint hotSpot((pixmap.width() / pixmap.devicePixelRatio()) / 2, 0);
1172     drag->setHotSpot(hotSpot);
1173
1174     drag->exec(Qt::MoveAction | Qt::CopyAction | Qt::LinkAction, Qt::CopyAction);
1175
1176     QAccessibleEvent accessibilityEvent(view(), QAccessible::DragDropStart);
1177     QAccessible::updateAccessibility(&accessibilityEvent);
1178 }
1179
1180 KItemListWidget* KItemListController::hoveredWidget() const
1181 {
1182     Q_ASSERT(m_view);
1183
1184     foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
1185         if (widget->isHovered()) {
1186             return widget;
1187         }
1188     }
1189
1190     return 0;
1191 }
1192
1193 KItemListWidget* KItemListController::widgetForPos(const QPointF& pos) const
1194 {
1195     Q_ASSERT(m_view);
1196
1197     foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
1198         const QPointF mappedPos = widget->mapFromItem(m_view, pos);
1199
1200         const bool hovered = widget->contains(mappedPos) &&
1201                              !widget->expansionToggleRect().contains(mappedPos);
1202         if (hovered) {
1203             return widget;
1204         }
1205     }
1206
1207     return 0;
1208 }
1209
1210 void KItemListController::updateKeyboardAnchor()
1211 {
1212     const bool validAnchor = m_keyboardAnchorIndex >= 0 &&
1213                              m_keyboardAnchorIndex < m_model->count() &&
1214                              keyboardAnchorPos(m_keyboardAnchorIndex) == m_keyboardAnchorPos;
1215     if (!validAnchor) {
1216         const int index = m_selectionManager->currentItem();
1217         m_keyboardAnchorIndex = index;
1218         m_keyboardAnchorPos = keyboardAnchorPos(index);
1219     }
1220 }
1221
1222 int KItemListController::nextRowIndex(int index) const
1223 {
1224     if (m_keyboardAnchorIndex < 0) {
1225         return index;
1226     }
1227
1228     const int maxIndex = m_model->count() - 1;
1229     if (index == maxIndex) {
1230         return index;
1231     }
1232
1233     // Calculate the index of the last column inside the row of the current index
1234     int lastColumnIndex = index;
1235     while (keyboardAnchorPos(lastColumnIndex + 1) > keyboardAnchorPos(lastColumnIndex)) {
1236         ++lastColumnIndex;
1237         if (lastColumnIndex >= maxIndex) {
1238             return index;
1239         }
1240     }
1241
1242     // Based on the last column index go to the next row and calculate the nearest index
1243     // that is below the current index
1244     int nextRowIndex = lastColumnIndex + 1;
1245     int searchIndex = nextRowIndex;
1246     qreal minDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(nextRowIndex));
1247     while (searchIndex < maxIndex && keyboardAnchorPos(searchIndex + 1) > keyboardAnchorPos(searchIndex)) {
1248         ++searchIndex;
1249         const qreal searchDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(searchIndex));
1250         if (searchDiff < minDiff) {
1251             minDiff = searchDiff;
1252             nextRowIndex = searchIndex;
1253         }
1254     }
1255
1256     return nextRowIndex;
1257 }
1258
1259 int KItemListController::previousRowIndex(int index) const
1260 {
1261     if (m_keyboardAnchorIndex < 0 || index == 0) {
1262         return index;
1263     }
1264
1265     // Calculate the index of the first column inside the row of the current index
1266     int firstColumnIndex = index;
1267     while (keyboardAnchorPos(firstColumnIndex - 1) < keyboardAnchorPos(firstColumnIndex)) {
1268         --firstColumnIndex;
1269         if (firstColumnIndex <= 0) {
1270             return index;
1271         }
1272     }
1273
1274     // Based on the first column index go to the previous row and calculate the nearest index
1275     // that is above the current index
1276     int previousRowIndex = firstColumnIndex - 1;
1277     int searchIndex = previousRowIndex;
1278     qreal minDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(previousRowIndex));
1279     while (searchIndex > 0 && keyboardAnchorPos(searchIndex - 1) < keyboardAnchorPos(searchIndex)) {
1280         --searchIndex;
1281         const qreal searchDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(searchIndex));
1282         if (searchDiff < minDiff) {
1283             minDiff = searchDiff;
1284             previousRowIndex = searchIndex;
1285         }
1286     }
1287
1288     return previousRowIndex;
1289 }
1290
1291 qreal KItemListController::keyboardAnchorPos(int index) const
1292 {
1293     const QRectF itemRect = m_view->itemRect(index);
1294     if (!itemRect.isEmpty()) {
1295         return (m_view->scrollOrientation() == Qt::Vertical) ? itemRect.x() : itemRect.y();
1296     }
1297
1298     return 0;
1299 }
1300
1301 void KItemListController::updateExtendedSelectionRegion()
1302 {
1303     if (m_view) {
1304         const bool extend = (m_selectionBehavior != MultiSelection);
1305         KItemListStyleOption option = m_view->styleOption();
1306         if (option.extendedSelectionRegion != extend) {
1307             option.extendedSelectionRegion = extend;
1308             m_view->setStyleOption(option);
1309         }
1310     }
1311 }
1312