src/kitemviews/kitemlistcontroller.cpp

   1 /*
   2  * SPDX-FileCopyrightText: 2011 Peter Penz <peter.penz19@gmail.com>
   3  * SPDX-FileCopyrightText: 2012 Frank Reininghaus <frank78ac@googlemail.com>
   4  *
   5  * Based on the Itemviews NG project from Trolltech Labs
   6  *
   7  * SPDX-License-Identifier: GPL-2.0-or-later
   8  */
   9
  10 #include "kitemlistcontroller.h"
  11
  12 #include "kitemlistselectionmanager.h"
  13 #include "kitemlistview.h"
  14 #include "private/kitemlistkeyboardsearchmanager.h"
  15 #include "private/kitemlistrubberband.h"
  16 #include "views/draganddrophelper.h"
  17
  18 #include <KTwoFingerSwipe>
  19 #include <KTwoFingerTap>
  20 #include <KUrlMimeData>
  21
  22 #include <QAccessible>
  23 #include <QApplication>
  24 #include <QDrag>
  25 #include <QGesture>
  26 #include <QGraphicsScene>
  27 #include <QGraphicsSceneEvent>
  28 #include <QGraphicsView>
  29 #include <QMimeData>
  30 #include <QTimer>
  31 #include <QTouchEvent>
  32
  33 KItemListController::KItemListController(KItemModelBase *model, KItemListView *view, QObject *parent)
  34     : QObject(parent)
  35     , m_singleClickActivationEnforced(false)
  36     , m_selectionMode(false)
  37     , m_selectionTogglePressed(false)
  38     , m_clearSelectionIfItemsAreNotDragged(false)
  39     , m_isSwipeGesture(false)
  40     , m_dragActionOrRightClick(false)
  41     , m_scrollerIsScrolling(false)
  42     , m_pinchGestureInProgress(false)
  43     , m_mousePress(false)
  44     , m_isTouchEvent(false)
  45     , m_selectionBehavior(NoSelection)
  46     , m_autoActivationBehavior(ActivationAndExpansion)
  47     , m_mouseDoubleClickAction(ActivateItemOnly)
  48     , m_model(nullptr)
  49     , m_view(nullptr)
  50     , m_selectionManager(new KItemListSelectionManager(this))
  51     , m_keyboardManager(new KItemListKeyboardSearchManager(this))
  52     , m_pressedIndex(std::nullopt)
  53     , m_pressedMousePos()
  54     , m_autoActivationTimer(nullptr)
  55     , m_swipeGesture(Qt::CustomGesture)
  56     , m_twoFingerTapGesture(Qt::CustomGesture)
  57     , m_oldSelection()
  58     , m_keyboardAnchorIndex(-1)
  59     , m_keyboardAnchorPos(0)
  60 {
  61     connect(m_keyboardManager, &KItemListKeyboardSearchManager::changeCurrentItem, this, &KItemListController::slotChangeCurrentItem);
  62     connect(m_selectionManager, &KItemListSelectionManager::currentChanged, m_keyboardManager, &KItemListKeyboardSearchManager::slotCurrentChanged);
  63     connect(m_selectionManager, &KItemListSelectionManager::selectionChanged, m_keyboardManager, &KItemListKeyboardSearchManager::slotSelectionChanged);
  64
  65     m_autoActivationTimer = new QTimer(this);
  66     m_autoActivationTimer->setSingleShot(true);
  67     m_autoActivationTimer->setInterval(-1);
  68     connect(m_autoActivationTimer, &QTimer::timeout, this, &KItemListController::slotAutoActivationTimeout);
  69
  70     setModel(model);
  71     setView(view);
  72
  73     m_swipeGesture = QGestureRecognizer::registerRecognizer(new KTwoFingerSwipeRecognizer());
  74     m_twoFingerTapGesture = QGestureRecognizer::registerRecognizer(new KTwoFingerTapRecognizer());
  75     view->grabGesture(m_swipeGesture);
  76     view->grabGesture(m_twoFingerTapGesture);
  77     view->grabGesture(Qt::TapGesture);
  78     view->grabGesture(Qt::TapAndHoldGesture);
  79     view->grabGesture(Qt::PinchGesture);
  80 }
  81
  82 KItemListController::~KItemListController()
  83 {
  84     setView(nullptr);
  85     Q_ASSERT(!m_view);
  86
  87     setModel(nullptr);
  88     Q_ASSERT(!m_model);
  89 }
  90
  91 void KItemListController::setModel(KItemModelBase *model)
  92 {
  93     if (m_model == model) {
  94         return;
  95     }
  96
  97     KItemModelBase *oldModel = m_model;
  98     if (oldModel) {
  99         oldModel->deleteLater();
 100     }
 101
 102     m_model = model;
 103     if (m_model) {
 104         m_model->setParent(this);
 105     }
 106
 107     if (m_view) {
 108         m_view->setModel(m_model);
 109     }
 110
 111     m_selectionManager->setModel(m_model);
 112
 113     Q_EMIT modelChanged(m_model, oldModel);
 114 }
 115
 116 KItemModelBase *KItemListController::model() const
 117 {
 118     return m_model;
 119 }
 120
 121 KItemListSelectionManager *KItemListController::selectionManager() const
 122 {
 123     return m_selectionManager;
 124 }
 125
 126 void KItemListController::setView(KItemListView *view)
 127 {
 128     if (m_view == view) {
 129         return;
 130     }
 131
 132     KItemListView *oldView = m_view;
 133     if (oldView) {
 134         disconnect(oldView, &KItemListView::scrollOffsetChanged, this, &KItemListController::slotViewScrollOffsetChanged);
 135         oldView->deleteLater();
 136     }
 137
 138     m_view = view;
 139
 140     if (m_view) {
 141         m_view->setParent(this);
 142         m_view->setController(this);
 143         m_view->setModel(m_model);
 144         connect(m_view, &KItemListView::scrollOffsetChanged, this, &KItemListController::slotViewScrollOffsetChanged);
 145         updateExtendedSelectionRegion();
 146     }
 147
 148     Q_EMIT viewChanged(m_view, oldView);
 149 }
 150
 151 KItemListView *KItemListController::view() const
 152 {
 153     return m_view;
 154 }
 155
 156 void KItemListController::setSelectionBehavior(SelectionBehavior behavior)
 157 {
 158     m_selectionBehavior = behavior;
 159     updateExtendedSelectionRegion();
 160 }
 161
 162 KItemListController::SelectionBehavior KItemListController::selectionBehavior() const
 163 {
 164     return m_selectionBehavior;
 165 }
 166
 167 void KItemListController::setAutoActivationBehavior(AutoActivationBehavior behavior)
 168 {
 169     m_autoActivationBehavior = behavior;
 170 }
 171
 172 KItemListController::AutoActivationBehavior KItemListController::autoActivationBehavior() const
 173 {
 174     return m_autoActivationBehavior;
 175 }
 176
 177 void KItemListController::setMouseDoubleClickAction(MouseDoubleClickAction action)
 178 {
 179     m_mouseDoubleClickAction = action;
 180 }
 181
 182 KItemListController::MouseDoubleClickAction KItemListController::mouseDoubleClickAction() const
 183 {
 184     return m_mouseDoubleClickAction;
 185 }
 186
 187 int KItemListController::indexCloseToMousePressedPosition() const
 188 {
 189     QHashIterator<KItemListWidget *, KItemListGroupHeader *> it(m_view->m_visibleGroups);
 190     while (it.hasNext()) {
 191         it.next();
 192         KItemListGroupHeader *groupHeader = it.value();
 193         const QPointF mappedToGroup = groupHeader->mapFromItem(nullptr, m_pressedMousePos);
 194         if (groupHeader->contains(mappedToGroup)) {
 195             return it.key()->index();
 196         }
 197     }
 198     return -1;
 199 }
 200
 201 void KItemListController::setAutoActivationDelay(int delay)
 202 {
 203     m_autoActivationTimer->setInterval(delay);
 204 }
 205
 206 int KItemListController::autoActivationDelay() const
 207 {
 208     return m_autoActivationTimer->interval();
 209 }
 210
 211 void KItemListController::setSingleClickActivationEnforced(bool singleClick)
 212 {
 213     m_singleClickActivationEnforced = singleClick;
 214 }
 215
 216 bool KItemListController::singleClickActivationEnforced() const
 217 {
 218     return m_singleClickActivationEnforced;
 219 }
 220
 221 void KItemListController::setSelectionModeEnabled(bool enabled)
 222 {
 223     m_selectionMode = enabled;
 224 }
 225
 226 bool KItemListController::selectionMode() const
 227 {
 228     return m_selectionMode;
 229 }
 230
 231 bool KItemListController::keyPressEvent(QKeyEvent *event)
 232 {
 233     int index = m_selectionManager->currentItem();
 234     int key = event->key();
 235
 236     // Handle the expanding/collapsing of items
 237     if (m_view->supportsItemExpanding() && m_model->isExpandable(index)) {
 238         if (key == Qt::Key_Right) {
 239             if (m_model->setExpanded(index, true)) {
 240                 return true;
 241             }
 242         } else if (key == Qt::Key_Left) {
 243             if (m_model->setExpanded(index, false)) {
 244                 return true;
 245             }
 246         }
 247     }
 248
 249     const bool shiftPressed = event->modifiers() & Qt::ShiftModifier;
 250     const bool controlPressed = event->modifiers() & Qt::ControlModifier;
 251     const bool shiftOrControlPressed = shiftPressed || controlPressed;
 252     const bool navigationPressed = key == Qt::Key_Home || key == Qt::Key_End || key == Qt::Key_PageUp || key == Qt::Key_PageDown || key == Qt::Key_Up
 253         || key == Qt::Key_Down || key == Qt::Key_Left || key == Qt::Key_Right;
 254
 255     const int itemCount = m_model->count();
 256
 257     // For horizontal scroll orientation, transform
 258     // the arrow keys to simplify the event handling.
 259     if (m_view->scrollOrientation() == Qt::Horizontal) {
 260         switch (key) {
 261         case Qt::Key_Up:
 262             key = Qt::Key_Left;
 263             break;
 264         case Qt::Key_Down:
 265             key = Qt::Key_Right;
 266             break;
 267         case Qt::Key_Left:
 268             key = Qt::Key_Up;
 269             break;
 270         case Qt::Key_Right:
 271             key = Qt::Key_Down;
 272             break;
 273         default:
 274             break;
 275         }
 276     }
 277
 278     const bool selectSingleItem = m_selectionBehavior != NoSelection && itemCount == 1 && navigationPressed;
 279
 280     if (selectSingleItem) {
 281         const int current = m_selectionManager->currentItem();
 282         m_selectionManager->setSelected(current);
 283         return true;
 284     }
 285
 286     switch (key) {
 287     case Qt::Key_Home:
 288         index = 0;
 289         m_keyboardAnchorIndex = index;
 290         m_keyboardAnchorPos = keyboardAnchorPos(index);
 291         break;
 292
 293     case Qt::Key_End:
 294         index = itemCount - 1;
 295         m_keyboardAnchorIndex = index;
 296         m_keyboardAnchorPos = keyboardAnchorPos(index);
 297         break;
 298
 299     case Qt::Key_Left:
 300         if (index > 0) {
 301             const int expandedParentsCount = m_model->expandedParentsCount(index);
 302             if (expandedParentsCount == 0) {
 303                 --index;
 304             } else {
 305                 // Go to the parent of the current item.
 306                 do {
 307                     --index;
 308                 } while (index > 0 && m_model->expandedParentsCount(index) == expandedParentsCount);
 309             }
 310             m_keyboardAnchorIndex = index;
 311             m_keyboardAnchorPos = keyboardAnchorPos(index);
 312         }
 313         break;
 314
 315     case Qt::Key_Right:
 316         if (index < itemCount - 1) {
 317             ++index;
 318             m_keyboardAnchorIndex = index;
 319             m_keyboardAnchorPos = keyboardAnchorPos(index);
 320         }
 321         break;
 322
 323     case Qt::Key_Up:
 324         updateKeyboardAnchor();
 325         index = previousRowIndex(index);
 326         break;
 327
 328     case Qt::Key_Down:
 329         updateKeyboardAnchor();
 330         index = nextRowIndex(index);
 331         break;
 332
 333     case Qt::Key_PageUp:
 334         if (m_view->scrollOrientation() == Qt::Horizontal) {
 335             // The new current index should correspond to the first item in the current column.
 336             int newIndex = qMax(index - 1, 0);
 337             while (newIndex != index && m_view->itemRect(newIndex).topLeft().y() < m_view->itemRect(index).topLeft().y()) {
 338                 index = newIndex;
 339                 newIndex = qMax(index - 1, 0);
 340             }
 341             m_keyboardAnchorIndex = index;
 342             m_keyboardAnchorPos = keyboardAnchorPos(index);
 343         } else {
 344             const qreal currentItemBottom = m_view->itemRect(index).bottomLeft().y();
 345             const qreal height = m_view->geometry().height();
 346
 347             // The new current item should be the first item in the current
 348             // column whose itemRect's top coordinate is larger than targetY.
 349             const qreal targetY = currentItemBottom - height;
 350
 351             updateKeyboardAnchor();
 352             int newIndex = previousRowIndex(index);
 353             do {
 354                 index = newIndex;
 355                 updateKeyboardAnchor();
 356                 newIndex = previousRowIndex(index);
 357             } while (m_view->itemRect(newIndex).topLeft().y() > targetY && newIndex != index);
 358         }
 359         break;
 360
 361     case Qt::Key_PageDown:
 362         if (m_view->scrollOrientation() == Qt::Horizontal) {
 363             // The new current index should correspond to the last item in the current column.
 364             int newIndex = qMin(index + 1, m_model->count() - 1);
 365             while (newIndex != index && m_view->itemRect(newIndex).topLeft().y() > m_view->itemRect(index).topLeft().y()) {
 366                 index = newIndex;
 367                 newIndex = qMin(index + 1, m_model->count() - 1);
 368             }
 369             m_keyboardAnchorIndex = index;
 370             m_keyboardAnchorPos = keyboardAnchorPos(index);
 371         } else {
 372             const qreal currentItemTop = m_view->itemRect(index).topLeft().y();
 373             const qreal height = m_view->geometry().height();
 374
 375             // The new current item should be the last item in the current
 376             // column whose itemRect's bottom coordinate is smaller than targetY.
 377             const qreal targetY = currentItemTop + height;
 378
 379             updateKeyboardAnchor();
 380             int newIndex = nextRowIndex(index);
 381             do {
 382                 index = newIndex;
 383                 updateKeyboardAnchor();
 384                 newIndex = nextRowIndex(index);
 385             } while (m_view->itemRect(newIndex).bottomLeft().y() < targetY && newIndex != index);
 386         }
 387         break;
 388
 389     case Qt::Key_Enter:
 390     case Qt::Key_Return: {
 391         const KItemSet selectedItems = m_selectionManager->selectedItems();
 392         if (selectedItems.count() >= 2) {
 393             Q_EMIT itemsActivated(selectedItems);
 394         } else if (selectedItems.count() == 1) {
 395             Q_EMIT itemActivated(selectedItems.first());
 396         } else {
 397             Q_EMIT itemActivated(index);
 398         }
 399         break;
 400     }
 401
 402     case Qt::Key_Menu: {
 403         // Emit the signal itemContextMenuRequested() in case if at least one
 404         // item is selected. Otherwise the signal viewContextMenuRequested() will be emitted.
 405         const KItemSet selectedItems = m_selectionManager->selectedItems();
 406         int index = -1;
 407         if (selectedItems.count() >= 2) {
 408             const int currentItemIndex = m_selectionManager->currentItem();
 409             index = selectedItems.contains(currentItemIndex) ? currentItemIndex : selectedItems.first();
 410         } else if (selectedItems.count() == 1) {
 411             index = selectedItems.first();
 412         }
 413
 414         if (index >= 0) {
 415             const QRectF contextRect = m_view->itemContextRect(index);
 416             const QPointF pos(m_view->scene()->views().first()->mapToGlobal(contextRect.bottomRight().toPoint()));
 417             Q_EMIT itemContextMenuRequested(index, pos);
 418         } else {
 419             Q_EMIT viewContextMenuRequested(QCursor::pos());
 420         }
 421         break;
 422     }
 423
 424     case Qt::Key_Escape:
 425         if (m_selectionMode) {
 426             Q_EMIT selectionModeChangeRequested(false);
 427         } else if (m_selectionBehavior != SingleSelection) {
 428             m_selectionManager->clearSelection();
 429         }
 430         m_keyboardManager->cancelSearch();
 431         Q_EMIT escapePressed();
 432         break;
 433
 434     case Qt::Key_Space:
 435         if (m_selectionBehavior == MultiSelection) {
 436             if (controlPressed) {
 437                 // Toggle the selection state of the current item.
 438                 m_selectionManager->endAnchoredSelection();
 439                 m_selectionManager->setSelected(index, 1, KItemListSelectionManager::Toggle);
 440                 m_selectionManager->beginAnchoredSelection(index);
 441                 break;
 442             } else if (m_keyboardManager->addKeyBeginsNewSearch()) { // File names shouldn't start with a space,
 443                 // so we can use this press as a keyboard shortcut instead.
 444                 Q_EMIT selectionModeChangeRequested(!m_selectionMode);
 445                 break;
 446             }
 447         }
 448         Q_FALLTHROUGH(); // fall through to the default case and add the Space to the current search string.
 449     default:
 450         m_keyboardManager->addKeys(event->text());
 451         // Make sure unconsumed events get propagated up the chain. #302329
 452         event->ignore();
 453         return false;
 454     }
 455
 456     if (m_selectionManager->currentItem() != index) {
 457         switch (m_selectionBehavior) {
 458         case NoSelection:
 459             m_selectionManager->setCurrentItem(index);
 460             break;
 461
 462         case SingleSelection:
 463             m_selectionManager->setCurrentItem(index);
 464             m_selectionManager->clearSelection();
 465             m_selectionManager->setSelected(index, 1);
 466             break;
 467
 468         case MultiSelection:
 469             if (controlPressed) {
 470                 m_selectionManager->endAnchoredSelection();
 471             }
 472
 473             m_selectionManager->setCurrentItem(index);
 474
 475             if (!shiftOrControlPressed) {
 476                 m_selectionManager->clearSelection();
 477                 m_selectionManager->setSelected(index, 1);
 478             }
 479
 480             if (!shiftPressed) {
 481                 m_selectionManager->beginAnchoredSelection(index);
 482             }
 483             break;
 484         }
 485     }
 486
 487     if (navigationPressed) {
 488         m_view->scrollToItem(index);
 489     }
 490     return true;
 491 }
 492
 493 void KItemListController::slotChangeCurrentItem(const QString &text, bool searchFromNextItem)
 494 {
 495     if (!m_model || m_model->count() == 0) {
 496         return;
 497     }
 498     int index;
 499     if (searchFromNextItem) {
 500         const int currentIndex = m_selectionManager->currentItem();
 501         index = m_model->indexForKeyboardSearch(text, (currentIndex + 1) % m_model->count());
 502     } else {
 503         index = m_model->indexForKeyboardSearch(text, 0);
 504     }
 505     if (index >= 0) {
 506         m_selectionManager->setCurrentItem(index);
 507
 508         if (m_selectionBehavior != NoSelection) {
 509             m_selectionManager->replaceSelection(index);
 510             m_selectionManager->beginAnchoredSelection(index);
 511         }
 512
 513         m_view->scrollToItem(index);
 514     }
 515 }
 516
 517 void KItemListController::slotAutoActivationTimeout()
 518 {
 519     if (!m_model || !m_view) {
 520         return;
 521     }
 522
 523     const int index = m_autoActivationTimer->property("index").toInt();
 524     if (index < 0 || index >= m_model->count()) {
 525         return;
 526     }
 527
 528     /* m_view->isUnderMouse() fixes a bug in the Folder-View-Panel and in the
 529      * Places-Panel.
 530      *
 531      * Bug: When you drag a file onto a Folder-View-Item or a Places-Item and
 532      * then move away before the auto-activation timeout triggers, than the
 533      * item still becomes activated/expanded.
 534      *
 535      * See Bug 293200 and 305783
 536      */
 537     if (m_model->supportsDropping(index) && m_view->isUnderMouse()) {
 538         if (m_view->supportsItemExpanding() && m_model->isExpandable(index)) {
 539             const bool expanded = m_model->isExpanded(index);
 540             m_model->setExpanded(index, !expanded);
 541         } else if (m_autoActivationBehavior != ExpansionOnly) {
 542             Q_EMIT itemActivated(index);
 543         }
 544     }
 545 }
 546
 547 bool KItemListController::inputMethodEvent(QInputMethodEvent *event)
 548 {
 549     Q_UNUSED(event)
 550     return false;
 551 }
 552
 553 bool KItemListController::mousePressEvent(QGraphicsSceneMouseEvent *event, const QTransform &transform)
 554 {
 555     m_mousePress = true;
 556
 557     if (event->source() == Qt::MouseEventSynthesizedByQt && m_isTouchEvent) {
 558         return false;
 559     }
 560
 561     if (!m_view) {
 562         return false;
 563     }
 564
 565     m_pressedMousePos = transform.map(event->pos());
 566     m_pressedIndex = m_view->itemAt(m_pressedMousePos);
 567
 568     const Qt::MouseButtons buttons = event->buttons();
 569
 570     if (!onPress(event->screenPos(), event->pos(), event->modifiers(), buttons)) {
 571         startRubberBand();
 572         return false;
 573     }
 574
 575     return true;
 576 }
 577
 578 bool KItemListController::mouseMoveEvent(QGraphicsSceneMouseEvent *event, const QTransform &transform)
 579 {
 580     if (!m_view) {
 581         return false;
 582     }
 583
 584     if (m_view->m_tapAndHoldIndicator->isActive()) {
 585         m_view->m_tapAndHoldIndicator->setActive(false);
 586     }
 587
 588     if (event->source() == Qt::MouseEventSynthesizedByQt && !m_dragActionOrRightClick && m_isTouchEvent) {
 589         return false;
 590     }
 591
 592     const QPointF pos = transform.map(event->pos());
 593
 594     if (m_pressedIndex.has_value() && !m_view->rubberBand()->isActive()) {
 595         // Check whether a dragging should be started
 596         if (event->buttons() & Qt::LeftButton) {
 597             if ((pos - m_pressedMousePos).manhattanLength() >= QApplication::startDragDistance()) {
 598                 if (!m_selectionManager->isSelected(m_pressedIndex.value())) {
 599                     // Always assure that the dragged item gets selected. Usually this is already
 600                     // done on the mouse-press event, but when using the selection-toggle on a
 601                     // selected item the dragged item is not selected yet.
 602                     m_selectionManager->setSelected(m_pressedIndex.value(), 1, KItemListSelectionManager::Toggle);
 603                 } else {
 604                     // A selected item has been clicked to drag all selected items
 605                     // -> the selection should not be cleared when the mouse button is released.
 606                     m_clearSelectionIfItemsAreNotDragged = false;
 607                 }
 608                 startDragging();
 609                 m_mousePress = false;
 610             }
 611         }
 612     } else {
 613         KItemListRubberBand *rubberBand = m_view->rubberBand();
 614         if (rubberBand->isActive()) {
 615             QPointF endPos = transform.map(event->pos());
 616
 617             // Update the current item.
 618             const std::optional<int> newCurrent = m_view->itemAt(endPos);
 619             if (newCurrent.has_value()) {
 620                 // It's expected that the new current index is also the new anchor (bug 163451).
 621                 m_selectionManager->endAnchoredSelection();
 622                 m_selectionManager->setCurrentItem(newCurrent.value());
 623                 m_selectionManager->beginAnchoredSelection(newCurrent.value());
 624             }
 625
 626             if (m_view->scrollOrientation() == Qt::Vertical) {
 627                 endPos.ry() += m_view->scrollOffset();
 628                 if (m_view->itemSize().width() < 0) {
 629                     // Use a special rubberband for views that have only one column and
 630                     // expand the rubberband to use the whole width of the view.
 631                     endPos.setX(m_view->size().width());
 632                 }
 633             } else {
 634                 endPos.rx() += m_view->scrollOffset();
 635             }
 636             rubberBand->setEndPosition(endPos);
 637         }
 638     }
 639
 640     return false;
 641 }
 642
 643 bool KItemListController::mouseReleaseEvent(QGraphicsSceneMouseEvent *event, const QTransform &transform)
 644 {
 645     m_mousePress = false;
 646     m_isTouchEvent = false;
 647
 648     if (!m_view) {
 649         return false;
 650     }
 651
 652     if (m_view->m_tapAndHoldIndicator->isActive()) {
 653         m_view->m_tapAndHoldIndicator->setActive(false);
 654     }
 655
 656     KItemListRubberBand *rubberBand = m_view->rubberBand();
 657     if (event->source() == Qt::MouseEventSynthesizedByQt && !rubberBand->isActive() && m_isTouchEvent) {
 658         return false;
 659     }
 660
 661     Q_EMIT mouseButtonReleased(m_pressedIndex.value_or(-1), event->buttons());
 662
 663     return onRelease(transform.map(event->pos()), event->modifiers(), event->button(), false);
 664 }
 665
 666 bool KItemListController::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event, const QTransform &transform)
 667 {
 668     const QPointF pos = transform.map(event->pos());
 669     const std::optional<int> index = m_view->itemAt(pos);
 670
 671     // Expand item if desired - See Bug 295573
 672     if (m_mouseDoubleClickAction != ActivateItemOnly) {
 673         if (m_view && m_model && m_view->supportsItemExpanding() && m_model->isExpandable(index.value_or(-1))) {
 674             const bool expanded = m_model->isExpanded(index.value());
 675             m_model->setExpanded(index.value(), !expanded);
 676         }
 677     }
 678
 679     if (event->button() & Qt::RightButton) {
 680         m_selectionManager->clearSelection();
 681         if (index.has_value()) {
 682             m_selectionManager->setSelected(index.value());
 683             Q_EMIT itemContextMenuRequested(index.value(), event->screenPos());
 684         } else {
 685             const QRectF headerBounds = m_view->headerBoundaries();
 686             if (headerBounds.contains(event->pos())) {
 687                 Q_EMIT headerContextMenuRequested(event->screenPos());
 688             } else {
 689                 Q_EMIT viewContextMenuRequested(event->screenPos());
 690             }
 691         }
 692         return true;
 693     }
 694
 695     bool emitItemActivated = !(m_view->style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick) || m_singleClickActivationEnforced)
 696         && (event->button() & Qt::LeftButton) && index.has_value() && index.value() < m_model->count();
 697     if (emitItemActivated) {
 698         Q_EMIT itemActivated(index.value());
 699     }
 700     return false;
 701 }
 702
 703 bool KItemListController::dragEnterEvent(QGraphicsSceneDragDropEvent *event, const QTransform &transform)
 704 {
 705     Q_UNUSED(event)
 706     Q_UNUSED(transform)
 707
 708     DragAndDropHelper::clearUrlListMatchesUrlCache();
 709
 710     return false;
 711 }
 712
 713 bool KItemListController::dragLeaveEvent(QGraphicsSceneDragDropEvent *event, const QTransform &transform)
 714 {
 715     Q_UNUSED(event)
 716     Q_UNUSED(transform)
 717
 718     m_autoActivationTimer->stop();
 719     m_view->setAutoScroll(false);
 720     m_view->hideDropIndicator();
 721
 722     KItemListWidget *widget = hoveredWidget();
 723     if (widget) {
 724         widget->setHovered(false);
 725         Q_EMIT itemUnhovered(widget->index());
 726     }
 727     return false;
 728 }
 729
 730 bool KItemListController::dragMoveEvent(QGraphicsSceneDragDropEvent *event, const QTransform &transform)
 731 {
 732     if (!m_model || !m_view) {
 733         return false;
 734     }
 735
 736     QUrl hoveredDir = m_model->directory();
 737     KItemListWidget *oldHoveredWidget = hoveredWidget();
 738
 739     const QPointF pos = transform.map(event->pos());
 740     KItemListWidget *newHoveredWidget = widgetForDropPos(pos);
 741
 742     if (oldHoveredWidget != newHoveredWidget) {
 743         m_autoActivationTimer->stop();
 744
 745         if (oldHoveredWidget) {
 746             oldHoveredWidget->setHovered(false);
 747             Q_EMIT itemUnhovered(oldHoveredWidget->index());
 748         }
 749     }
 750
 751     if (newHoveredWidget) {
 752         bool droppingBetweenItems = false;
 753         if (m_model->sortRole().isEmpty()) {
 754             // The model supports inserting items between other items.
 755             droppingBetweenItems = (m_view->showDropIndicator(pos) >= 0);
 756         }
 757
 758         const int index = newHoveredWidget->index();
 759
 760         if (m_model->isDir(index)) {
 761             hoveredDir = m_model->url(index);
 762         }
 763
 764         if (!droppingBetweenItems) {
 765             if (m_model->supportsDropping(index)) {
 766                 // Something has been dragged on an item.
 767                 m_view->hideDropIndicator();
 768                 if (!newHoveredWidget->isHovered()) {
 769                     newHoveredWidget->setHovered(true);
 770                     Q_EMIT itemHovered(index);
 771                 }
 772
 773                 if (!m_autoActivationTimer->isActive() && m_autoActivationTimer->interval() >= 0) {
 774                     m_autoActivationTimer->setProperty("index", index);
 775                     m_autoActivationTimer->start();
 776                 }
 777             }
 778         } else {
 779             m_autoActivationTimer->stop();
 780             if (newHoveredWidget && newHoveredWidget->isHovered()) {
 781                 newHoveredWidget->setHovered(false);
 782                 Q_EMIT itemUnhovered(index);
 783             }
 784         }
 785     } else {
 786         m_view->hideDropIndicator();
 787     }
 788
 789     if (DragAndDropHelper::urlListMatchesUrl(event->mimeData()->urls(), hoveredDir)) {
 790         event->setDropAction(Qt::IgnoreAction);
 791         event->ignore();
 792     } else {
 793         event->setDropAction(event->proposedAction());
 794         event->accept();
 795     }
 796     return false;
 797 }
 798
 799 bool KItemListController::dropEvent(QGraphicsSceneDragDropEvent *event, const QTransform &transform)
 800 {
 801     if (!m_view) {
 802         return false;
 803     }
 804
 805     m_autoActivationTimer->stop();
 806     m_view->setAutoScroll(false);
 807
 808     const QPointF pos = transform.map(event->pos());
 809
 810     int dropAboveIndex = -1;
 811     if (m_model->sortRole().isEmpty()) {
 812         // The model supports inserting of items between other items.
 813         dropAboveIndex = m_view->showDropIndicator(pos);
 814     }
 815
 816     if (dropAboveIndex >= 0) {
 817         // Something has been dropped between two items.
 818         m_view->hideDropIndicator();
 819         Q_EMIT aboveItemDropEvent(dropAboveIndex, event);
 820     } else if (!event->mimeData()->hasFormat(m_model->blacklistItemDropEventMimeType())) {
 821         // Something has been dropped on an item or on an empty part of the view.
 822         const KItemListWidget *receivingWidget = widgetForDropPos(pos);
 823         if (receivingWidget) {
 824             Q_EMIT itemDropEvent(receivingWidget->index(), event);
 825         } else {
 826             Q_EMIT itemDropEvent(-1, event);
 827         }
 828     }
 829
 830     QAccessibleEvent accessibilityEvent(view(), QAccessible::DragDropEnd);
 831     QAccessible::updateAccessibility(&accessibilityEvent);
 832
 833     return true;
 834 }
 835
 836 bool KItemListController::hoverEnterEvent(QGraphicsSceneHoverEvent *event, const QTransform &transform)
 837 {
 838     Q_UNUSED(event)
 839     Q_UNUSED(transform)
 840     return false;
 841 }
 842
 843 bool KItemListController::hoverMoveEvent(QGraphicsSceneHoverEvent *event, const QTransform &transform)
 844 {
 845     Q_UNUSED(transform)
 846     if (!m_model || !m_view) {
 847         return false;
 848     }
 849
 850     // We identify the widget whose expansionArea had been hovered before this hoverMoveEvent() triggered.
 851     // we can't use hoveredWidget() here (it handles the icon+text rect, not the expansion rect)
 852     // like hoveredWidget(), we find the hovered widget for the expansion rect
 853     const auto visibleItemListWidgets = m_view->visibleItemListWidgets();
 854     const auto oldHoveredExpansionWidgetIterator = std::find_if(visibleItemListWidgets.begin(), visibleItemListWidgets.end(), [](auto &widget) {
 855         return widget->expansionAreaHovered();
 856     });
 857     const auto oldHoveredExpansionWidget =
 858         oldHoveredExpansionWidgetIterator == visibleItemListWidgets.end() ? std::nullopt : std::make_optional(*oldHoveredExpansionWidgetIterator);
 859
 860     const auto unhoverOldHoveredWidget = [&]() {
 861         if (auto oldHoveredWidget = hoveredWidget(); oldHoveredWidget) {
 862             // handle the text+icon one
 863             oldHoveredWidget->setHovered(false);
 864             Q_EMIT itemUnhovered(oldHoveredWidget->index());
 865         }
 866     };
 867
 868     const auto unhoverOldExpansionWidget = [&]() {
 869         if (oldHoveredExpansionWidget) {
 870             // then the expansion toggle
 871             (*oldHoveredExpansionWidget)->setExpansionAreaHovered(false);
 872         }
 873     };
 874
 875     const QPointF pos = transform.map(event->pos());
 876     if (KItemListWidget *newHoveredWidget = widgetForPos(pos); newHoveredWidget) {
 877         // something got hovered, work out which part and set hover for the appropriate widget
 878         const auto mappedPos = newHoveredWidget->mapFromItem(m_view, pos);
 879         const bool isOnExpansionToggle = newHoveredWidget->expansionToggleRect().contains(mappedPos);
 880
 881         if (isOnExpansionToggle) {
 882             // make sure we unhover the old one first if old!=new
 883             if (oldHoveredExpansionWidget && *oldHoveredExpansionWidget != newHoveredWidget) {
 884                 (*oldHoveredExpansionWidget)->setExpansionAreaHovered(false);
 885             }
 886             // we also unhover any old icon+text hovers, in case the mouse movement from icon+text to expansion toggle is too fast (i.e. newHoveredWidget is never null between the transition)
 887             unhoverOldHoveredWidget();
 888
 889             newHoveredWidget->setExpansionAreaHovered(true);
 890         } else {
 891             // make sure we unhover the old one first if old!=new
 892             auto oldHoveredWidget = hoveredWidget();
 893             if (oldHoveredWidget && oldHoveredWidget != newHoveredWidget) {
 894                 oldHoveredWidget->setHovered(false);
 895                 Q_EMIT itemUnhovered(oldHoveredWidget->index());
 896             }
 897             // we also unhover any old expansion toggle hovers, in case the mouse movement from expansion toggle to icon+text is too fast (i.e. newHoveredWidget is never null between the transition)
 898             unhoverOldExpansionWidget();
 899
 900             const bool isOverIconAndText = newHoveredWidget->iconRect().contains(mappedPos) || newHoveredWidget->textRect().contains(mappedPos);
 901             const bool hasMultipleSelection = m_selectionManager->selectedItems().count() > 1;
 902
 903             if (hasMultipleSelection && !isOverIconAndText) {
 904                 // In case we have multiple selections, clicking on any row will deselect the selection.
 905                 // So, as a visual cue for signalling that clicking anywhere won't select, but clear current highlights,
 906                 // we disable hover of the *row*(i.e. blank space to the right of the icon+text)
 907
 908                 // (no-op in this branch for masked hover)
 909             } else {
 910                 newHoveredWidget->setHoverPosition(mappedPos);
 911                 if (oldHoveredWidget != newHoveredWidget) {
 912                     newHoveredWidget->setHovered(true);
 913                     Q_EMIT itemHovered(newHoveredWidget->index());
 914                 }
 915             }
 916         }
 917     } else {
 918         // unhover any currently hovered expansion and text+icon widgets
 919         unhoverOldHoveredWidget();
 920         unhoverOldExpansionWidget();
 921     }
 922     return false;
 923 }
 924
 925 bool KItemListController::hoverLeaveEvent(QGraphicsSceneHoverEvent *event, const QTransform &transform)
 926 {
 927     Q_UNUSED(event)
 928     Q_UNUSED(transform)
 929
 930     m_mousePress = false;
 931     m_isTouchEvent = false;
 932
 933     if (!m_model || !m_view) {
 934         return false;
 935     }
 936
 937     const auto widgets = m_view->visibleItemListWidgets();
 938     for (KItemListWidget *widget : widgets) {
 939         if (widget->isHovered()) {
 940             widget->setHovered(false);
 941             Q_EMIT itemUnhovered(widget->index());
 942         }
 943     }
 944     return false;
 945 }
 946
 947 bool KItemListController::wheelEvent(QGraphicsSceneWheelEvent *event, const QTransform &transform)
 948 {
 949     Q_UNUSED(event)
 950     Q_UNUSED(transform)
 951     return false;
 952 }
 953
 954 bool KItemListController::resizeEvent(QGraphicsSceneResizeEvent *event, const QTransform &transform)
 955 {
 956     Q_UNUSED(event)
 957     Q_UNUSED(transform)
 958     return false;
 959 }
 960
 961 bool KItemListController::gestureEvent(QGestureEvent *event, const QTransform &transform)
 962 {
 963     if (!m_view) {
 964         return false;
 965     }
 966
 967     //you can touch on different views at the same time, but only one QWidget gets a mousePressEvent
 968     //we use this to get the right QWidget
 969     //the only exception is a tap gesture with state GestureStarted, we need to reset some variable
 970     if (!m_mousePress) {
 971         if (QGesture *tap = event->gesture(Qt::TapGesture)) {
 972             QTapGesture *tapGesture = static_cast<QTapGesture *>(tap);
 973             if (tapGesture->state() == Qt::GestureStarted) {
 974                 tapTriggered(tapGesture, transform);
 975             }
 976         }
 977         return false;
 978     }
 979
 980     bool accepted = false;
 981
 982     if (QGesture *tap = event->gesture(Qt::TapGesture)) {
 983         tapTriggered(static_cast<QTapGesture *>(tap), transform);
 984         accepted = true;
 985     }
 986     if (event->gesture(Qt::TapAndHoldGesture)) {
 987         tapAndHoldTriggered(event, transform);
 988         accepted = true;
 989     }
 990     if (event->gesture(Qt::PinchGesture)) {
 991         pinchTriggered(event, transform);
 992         accepted = true;
 993     }
 994     if (event->gesture(m_swipeGesture)) {
 995         swipeTriggered(event, transform);
 996         accepted = true;
 997     }
 998     if (event->gesture(m_twoFingerTapGesture)) {
 999         twoFingerTapTriggered(event, transform);
1000         accepted = true;
1001     }
1002     return accepted;
1003 }
1004
1005 bool KItemListController::touchBeginEvent(QTouchEvent *event, const QTransform &transform)
1006 {
1007     Q_UNUSED(event)
1008     Q_UNUSED(transform)
1009
1010     m_isTouchEvent = true;
1011     return false;
1012 }
1013
1014 void KItemListController::tapTriggered(QTapGesture *tap, const QTransform &transform)
1015 {
1016     static bool scrollerWasActive = false;
1017
1018     if (tap->state() == Qt::GestureStarted) {
1019         m_dragActionOrRightClick = false;
1020         m_isSwipeGesture = false;
1021         m_pinchGestureInProgress = false;
1022         scrollerWasActive = m_scrollerIsScrolling;
1023     }
1024
1025     if (tap->state() == Qt::GestureFinished) {
1026         m_mousePress = false;
1027
1028         //if at the moment of the gesture start the QScroller was active, the user made the tap
1029         //to stop the QScroller and not to tap on an item
1030         if (scrollerWasActive) {
1031             return;
1032         }
1033
1034         if (m_view->m_tapAndHoldIndicator->isActive()) {
1035             m_view->m_tapAndHoldIndicator->setActive(false);
1036         }
1037
1038         m_pressedMousePos = transform.map(tap->position());
1039         m_pressedIndex = m_view->itemAt(m_pressedMousePos);
1040
1041         if (m_dragActionOrRightClick) {
1042             m_dragActionOrRightClick = false;
1043         } else {
1044             onPress(tap->hotSpot().toPoint(), tap->position().toPoint(), Qt::NoModifier, Qt::LeftButton);
1045             onRelease(transform.map(tap->position()), Qt::NoModifier, Qt::LeftButton, true);
1046         }
1047         m_isTouchEvent = false;
1048     }
1049 }
1050
1051 void KItemListController::tapAndHoldTriggered(QGestureEvent *event, const QTransform &transform)
1052 {
1053     //the Qt TabAndHold gesture is triggerable with a mouse click, we don't want this
1054     if (!m_isTouchEvent) {
1055         return;
1056     }
1057
1058     const QTapAndHoldGesture *tap = static_cast<QTapAndHoldGesture *>(event->gesture(Qt::TapAndHoldGesture));
1059     if (tap->state() == Qt::GestureFinished) {
1060         //if a pinch gesture is in progress we don't want a TabAndHold gesture
1061         if (m_pinchGestureInProgress) {
1062             return;
1063         }
1064         m_pressedMousePos = transform.map(event->mapToGraphicsScene(tap->position()));
1065         m_pressedIndex = m_view->itemAt(m_pressedMousePos);
1066
1067         if (m_pressedIndex.has_value() && !m_selectionManager->isSelected(m_pressedIndex.value())) {
1068             m_selectionManager->clearSelection();
1069             m_selectionManager->setSelected(m_pressedIndex.value());
1070             if (!m_selectionMode) {
1071                 Q_EMIT selectionModeChangeRequested(true);
1072             }
1073         } else if (!m_pressedIndex.has_value()) {
1074             m_selectionManager->clearSelection();
1075             startRubberBand();
1076         }
1077
1078         Q_EMIT scrollerStop();
1079
1080         m_view->m_tapAndHoldIndicator->setStartPosition(m_pressedMousePos);
1081         m_view->m_tapAndHoldIndicator->setActive(true);
1082
1083         m_dragActionOrRightClick = true;
1084     }
1085 }
1086
1087 void KItemListController::pinchTriggered(QGestureEvent *event, const QTransform &transform)
1088 {
1089     Q_UNUSED(transform)
1090
1091     const QPinchGesture *pinch = static_cast<QPinchGesture *>(event->gesture(Qt::PinchGesture));
1092     const qreal sensitivityModifier = 0.2;
1093     static qreal counter = 0;
1094
1095     if (pinch->state() == Qt::GestureStarted) {
1096         m_pinchGestureInProgress = true;
1097         counter = 0;
1098     }
1099     if (pinch->state() == Qt::GestureUpdated) {
1100         //if a swipe gesture was recognized or in progress, we don't want a pinch gesture to change the zoom
1101         if (m_isSwipeGesture) {
1102             return;
1103         }
1104         counter = counter + (pinch->scaleFactor() - 1);
1105         if (counter >= sensitivityModifier) {
1106             Q_EMIT increaseZoom();
1107             counter = 0;
1108         } else if (counter <= -sensitivityModifier) {
1109             Q_EMIT decreaseZoom();
1110             counter = 0;
1111         }
1112     }
1113 }
1114
1115 void KItemListController::swipeTriggered(QGestureEvent *event, const QTransform &transform)
1116 {
1117     Q_UNUSED(transform)
1118
1119     const KTwoFingerSwipe *swipe = static_cast<KTwoFingerSwipe *>(event->gesture(m_swipeGesture));
1120
1121     if (!swipe) {
1122         return;
1123     }
1124     if (swipe->state() == Qt::GestureStarted) {
1125         m_isSwipeGesture = true;
1126     }
1127
1128     if (swipe->state() == Qt::GestureCanceled) {
1129         m_isSwipeGesture = false;
1130     }
1131
1132     if (swipe->state() == Qt::GestureFinished) {
1133         Q_EMIT scrollerStop();
1134
1135         if (swipe->swipeAngle() <= 20 || swipe->swipeAngle() >= 340) {
1136             Q_EMIT mouseButtonPressed(m_pressedIndex.value_or(-1), Qt::BackButton);
1137         } else if (swipe->swipeAngle() <= 200 && swipe->swipeAngle() >= 160) {
1138             Q_EMIT mouseButtonPressed(m_pressedIndex.value_or(-1), Qt::ForwardButton);
1139         } else if (swipe->swipeAngle() <= 110 && swipe->swipeAngle() >= 60) {
1140             Q_EMIT swipeUp();
1141         }
1142         m_isSwipeGesture = true;
1143     }
1144 }
1145
1146 void KItemListController::twoFingerTapTriggered(QGestureEvent *event, const QTransform &transform)
1147 {
1148     const KTwoFingerTap *twoTap = static_cast<KTwoFingerTap *>(event->gesture(m_twoFingerTapGesture));
1149
1150     if (!twoTap) {
1151         return;
1152     }
1153
1154     if (twoTap->state() == Qt::GestureStarted) {
1155         m_pressedMousePos = transform.map(twoTap->pos());
1156         m_pressedIndex = m_view->itemAt(m_pressedMousePos);
1157         if (m_pressedIndex.has_value()) {
1158             onPress(twoTap->screenPos().toPoint(), twoTap->pos().toPoint(), Qt::ControlModifier, Qt::LeftButton);
1159             onRelease(transform.map(twoTap->pos()), Qt::ControlModifier, Qt::LeftButton, false);
1160         }
1161     }
1162 }
1163
1164 bool KItemListController::processEvent(QEvent *event, const QTransform &transform)
1165 {
1166     if (!event) {
1167         return false;
1168     }
1169
1170     switch (event->type()) {
1171     case QEvent::KeyPress:
1172         return keyPressEvent(static_cast<QKeyEvent *>(event));
1173     case QEvent::InputMethod:
1174         return inputMethodEvent(static_cast<QInputMethodEvent *>(event));
1175     case QEvent::GraphicsSceneMousePress:
1176         return mousePressEvent(static_cast<QGraphicsSceneMouseEvent *>(event), QTransform());
1177     case QEvent::GraphicsSceneMouseMove:
1178         return mouseMoveEvent(static_cast<QGraphicsSceneMouseEvent *>(event), QTransform());
1179     case QEvent::GraphicsSceneMouseRelease:
1180         return mouseReleaseEvent(static_cast<QGraphicsSceneMouseEvent *>(event), QTransform());
1181     case QEvent::GraphicsSceneMouseDoubleClick:
1182         return mouseDoubleClickEvent(static_cast<QGraphicsSceneMouseEvent *>(event), QTransform());
1183     case QEvent::GraphicsSceneWheel:
1184         return wheelEvent(static_cast<QGraphicsSceneWheelEvent *>(event), QTransform());
1185     case QEvent::GraphicsSceneDragEnter:
1186         return dragEnterEvent(static_cast<QGraphicsSceneDragDropEvent *>(event), QTransform());
1187     case QEvent::GraphicsSceneDragLeave:
1188         return dragLeaveEvent(static_cast<QGraphicsSceneDragDropEvent *>(event), QTransform());
1189     case QEvent::GraphicsSceneDragMove:
1190         return dragMoveEvent(static_cast<QGraphicsSceneDragDropEvent *>(event), QTransform());
1191     case QEvent::GraphicsSceneDrop:
1192         return dropEvent(static_cast<QGraphicsSceneDragDropEvent *>(event), QTransform());
1193     case QEvent::GraphicsSceneHoverEnter:
1194         return hoverEnterEvent(static_cast<QGraphicsSceneHoverEvent *>(event), QTransform());
1195     case QEvent::GraphicsSceneHoverMove:
1196         return hoverMoveEvent(static_cast<QGraphicsSceneHoverEvent *>(event), QTransform());
1197     case QEvent::GraphicsSceneHoverLeave:
1198         return hoverLeaveEvent(static_cast<QGraphicsSceneHoverEvent *>(event), QTransform());
1199     case QEvent::GraphicsSceneResize:
1200         return resizeEvent(static_cast<QGraphicsSceneResizeEvent *>(event), transform);
1201     case QEvent::Gesture:
1202         return gestureEvent(static_cast<QGestureEvent *>(event), transform);
1203     case QEvent::TouchBegin:
1204         return touchBeginEvent(static_cast<QTouchEvent *>(event), transform);
1205     default:
1206         break;
1207     }
1208
1209     return false;
1210 }
1211
1212 void KItemListController::slotViewScrollOffsetChanged(qreal current, qreal previous)
1213 {
1214     if (!m_view) {
1215         return;
1216     }
1217
1218     KItemListRubberBand *rubberBand = m_view->rubberBand();
1219     if (rubberBand->isActive()) {
1220         const qreal diff = current - previous;
1221         // TODO: Ideally just QCursor::pos() should be used as
1222         // new end-position but it seems there is no easy way
1223         // to have something like QWidget::mapFromGlobal() for QGraphicsWidget
1224         // (... or I just missed an easy way to do the mapping)
1225         QPointF endPos = rubberBand->endPosition();
1226         if (m_view->scrollOrientation() == Qt::Vertical) {
1227             endPos.ry() += diff;
1228         } else {
1229             endPos.rx() += diff;
1230         }
1231
1232         rubberBand->setEndPosition(endPos);
1233     }
1234 }
1235
1236 void KItemListController::slotRubberBandChanged()
1237 {
1238     if (!m_view || !m_model || m_model->count() <= 0) {
1239         return;
1240     }
1241
1242     const KItemListRubberBand *rubberBand = m_view->rubberBand();
1243     const QPointF startPos = rubberBand->startPosition();
1244     const QPointF endPos = rubberBand->endPosition();
1245     QRectF rubberBandRect = QRectF(startPos, endPos).normalized();
1246
1247     const bool scrollVertical = (m_view->scrollOrientation() == Qt::Vertical);
1248     if (scrollVertical) {
1249         rubberBandRect.translate(0, -m_view->scrollOffset());
1250     } else {
1251         rubberBandRect.translate(-m_view->scrollOffset(), 0);
1252     }
1253
1254     if (!m_oldSelection.isEmpty()) {
1255         // Clear the old selection that was available before the rubberband has
1256         // been activated in case if no Shift- or Control-key are pressed
1257         const bool shiftOrControlPressed = QApplication::keyboardModifiers() & Qt::ShiftModifier || QApplication::keyboardModifiers() & Qt::ControlModifier;
1258         if (!shiftOrControlPressed && !m_selectionMode) {
1259             m_oldSelection.clear();
1260         }
1261     }
1262
1263     KItemSet selectedItems;
1264
1265     // Select all visible items that intersect with the rubberband
1266     const auto widgets = m_view->visibleItemListWidgets();
1267     for (const KItemListWidget *widget : widgets) {
1268         const int index = widget->index();
1269
1270         const QRectF widgetRect = m_view->itemRect(index);
1271         if (widgetRect.intersects(rubberBandRect)) {
1272             const QRectF iconRect = widget->iconRect().translated(widgetRect.topLeft());
1273             const QRectF textRect = widget->textRect().translated(widgetRect.topLeft());
1274             if (iconRect.intersects(rubberBandRect) || textRect.intersects(rubberBandRect)) {
1275                 selectedItems.insert(index);
1276             }
1277         }
1278     }
1279
1280     // Select all invisible items that intersect with the rubberband. Instead of
1281     // iterating all items only the area which might be touched by the rubberband
1282     // will be checked.
1283     const bool increaseIndex = scrollVertical ? startPos.y() > endPos.y() : startPos.x() > endPos.x();
1284
1285     int index = increaseIndex ? m_view->lastVisibleIndex() + 1 : m_view->firstVisibleIndex() - 1;
1286     bool selectionFinished = false;
1287     do {
1288         const QRectF widgetRect = m_view->itemRect(index);
1289         if (widgetRect.intersects(rubberBandRect)) {
1290             selectedItems.insert(index);
1291         }
1292
1293         if (increaseIndex) {
1294             ++index;
1295             selectionFinished = (index >= m_model->count()) || (scrollVertical && widgetRect.top() > rubberBandRect.bottom())
1296                 || (!scrollVertical && widgetRect.left() > rubberBandRect.right());
1297         } else {
1298             --index;
1299             selectionFinished = (index < 0) || (scrollVertical && widgetRect.bottom() < rubberBandRect.top())
1300                 || (!scrollVertical && widgetRect.right() < rubberBandRect.left());
1301         }
1302     } while (!selectionFinished);
1303
1304     if ((QApplication::keyboardModifiers() & Qt::ControlModifier) || m_selectionMode) {
1305         // If Control is pressed, the selection state of all items in the rubberband is toggled.
1306         // Therefore, the new selection contains:
1307         // 1. All previously selected items which are not inside the rubberband, and
1308         // 2. all items inside the rubberband which have not been selected previously.
1309         m_selectionManager->setSelectedItems(m_oldSelection ^ selectedItems);
1310     } else {
1311         m_selectionManager->setSelectedItems(selectedItems + m_oldSelection);
1312     }
1313 }
1314
1315 void KItemListController::startDragging()
1316 {
1317     if (!m_view || !m_model) {
1318         return;
1319     }
1320
1321     const KItemSet selectedItems = m_selectionManager->selectedItems();
1322     if (selectedItems.isEmpty()) {
1323         return;
1324     }
1325
1326     QMimeData *data = m_model->createMimeData(selectedItems);
1327     if (!data) {
1328         return;
1329     }
1330     KUrlMimeData::exportUrlsToPortal(data);
1331
1332     // The created drag object will be owned and deleted
1333     // by QApplication::activeWindow().
1334     QDrag *drag = new QDrag(QApplication::activeWindow());
1335     drag->setMimeData(data);
1336
1337     const QPixmap pixmap = m_view->createDragPixmap(selectedItems);
1338     drag->setPixmap(pixmap);
1339
1340     const QPoint hotSpot((pixmap.width() / pixmap.devicePixelRatio()) / 2, 0);
1341     drag->setHotSpot(hotSpot);
1342
1343     drag->exec(Qt::MoveAction | Qt::CopyAction | Qt::LinkAction, Qt::CopyAction);
1344
1345     QAccessibleEvent accessibilityEvent(view(), QAccessible::DragDropStart);
1346     QAccessible::updateAccessibility(&accessibilityEvent);
1347 }
1348
1349 KItemListWidget *KItemListController::hoveredWidget() const
1350 {
1351     Q_ASSERT(m_view);
1352
1353     const auto widgets = m_view->visibleItemListWidgets();
1354     for (KItemListWidget *widget : widgets) {
1355         if (widget->isHovered()) {
1356             return widget;
1357         }
1358     }
1359
1360     return nullptr;
1361 }
1362
1363 KItemListWidget *KItemListController::widgetForPos(const QPointF &pos) const
1364 {
1365     Q_ASSERT(m_view);
1366
1367     const auto widgets = m_view->visibleItemListWidgets();
1368     for (KItemListWidget *widget : widgets) {
1369         const QPointF mappedPos = widget->mapFromItem(m_view, pos);
1370         if (widget->contains(mappedPos) || widget->selectionRect().contains(mappedPos)) {
1371             return widget;
1372         }
1373     }
1374
1375     return nullptr;
1376 }
1377
1378 KItemListWidget *KItemListController::widgetForDropPos(const QPointF &pos) const
1379 {
1380     Q_ASSERT(m_view);
1381
1382     const auto widgets = m_view->visibleItemListWidgets();
1383     for (KItemListWidget *widget : widgets) {
1384         const QPointF mappedPos = widget->mapFromItem(m_view, pos);
1385         if (widget->contains(mappedPos)) {
1386             return widget;
1387         }
1388     }
1389
1390     return nullptr;
1391 }
1392
1393 void KItemListController::updateKeyboardAnchor()
1394 {
1395     const bool validAnchor =
1396         m_keyboardAnchorIndex >= 0 && m_keyboardAnchorIndex < m_model->count() && keyboardAnchorPos(m_keyboardAnchorIndex) == m_keyboardAnchorPos;
1397     if (!validAnchor) {
1398         const int index = m_selectionManager->currentItem();
1399         m_keyboardAnchorIndex = index;
1400         m_keyboardAnchorPos = keyboardAnchorPos(index);
1401     }
1402 }
1403
1404 int KItemListController::nextRowIndex(int index) const
1405 {
1406     if (m_keyboardAnchorIndex < 0) {
1407         return index;
1408     }
1409
1410     const int maxIndex = m_model->count() - 1;
1411     if (index == maxIndex) {
1412         return index;
1413     }
1414
1415     // Calculate the index of the last column inside the row of the current index
1416     int lastColumnIndex = index;
1417     while (keyboardAnchorPos(lastColumnIndex + 1) > keyboardAnchorPos(lastColumnIndex)) {
1418         ++lastColumnIndex;
1419         if (lastColumnIndex >= maxIndex) {
1420             return index;
1421         }
1422     }
1423
1424     // Based on the last column index go to the next row and calculate the nearest index
1425     // that is below the current index
1426     int nextRowIndex = lastColumnIndex + 1;
1427     int searchIndex = nextRowIndex;
1428     qreal minDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(nextRowIndex));
1429     while (searchIndex < maxIndex && keyboardAnchorPos(searchIndex + 1) > keyboardAnchorPos(searchIndex)) {
1430         ++searchIndex;
1431         const qreal searchDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(searchIndex));
1432         if (searchDiff < minDiff) {
1433             minDiff = searchDiff;
1434             nextRowIndex = searchIndex;
1435         }
1436     }
1437
1438     return nextRowIndex;
1439 }
1440
1441 int KItemListController::previousRowIndex(int index) const
1442 {
1443     if (m_keyboardAnchorIndex < 0 || index == 0) {
1444         return index;
1445     }
1446
1447     // Calculate the index of the first column inside the row of the current index
1448     int firstColumnIndex = index;
1449     while (keyboardAnchorPos(firstColumnIndex - 1) < keyboardAnchorPos(firstColumnIndex)) {
1450         --firstColumnIndex;
1451         if (firstColumnIndex <= 0) {
1452             return index;
1453         }
1454     }
1455
1456     // Based on the first column index go to the previous row and calculate the nearest index
1457     // that is above the current index
1458     int previousRowIndex = firstColumnIndex - 1;
1459     int searchIndex = previousRowIndex;
1460     qreal minDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(previousRowIndex));
1461     while (searchIndex > 0 && keyboardAnchorPos(searchIndex - 1) < keyboardAnchorPos(searchIndex)) {
1462         --searchIndex;
1463         const qreal searchDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(searchIndex));
1464         if (searchDiff < minDiff) {
1465             minDiff = searchDiff;
1466             previousRowIndex = searchIndex;
1467         }
1468     }
1469
1470     return previousRowIndex;
1471 }
1472
1473 qreal KItemListController::keyboardAnchorPos(int index) const
1474 {
1475     const QRectF itemRect = m_view->itemRect(index);
1476     if (!itemRect.isEmpty()) {
1477         return (m_view->scrollOrientation() == Qt::Vertical) ? itemRect.x() : itemRect.y();
1478     }
1479
1480     return 0;
1481 }
1482
1483 void KItemListController::updateExtendedSelectionRegion()
1484 {
1485     if (m_view) {
1486         const bool extend = (m_selectionBehavior != MultiSelection);
1487         KItemListStyleOption option = m_view->styleOption();
1488         if (option.extendedSelectionRegion != extend) {
1489             option.extendedSelectionRegion = extend;
1490             m_view->setStyleOption(option);
1491         }
1492     }
1493 }
1494
1495 bool KItemListController::onPress(const QPoint &screenPos, const QPointF &pos, const Qt::KeyboardModifiers modifiers, const Qt::MouseButtons buttons)
1496 {
1497     Q_EMIT mouseButtonPressed(m_pressedIndex.value_or(-1), buttons);
1498
1499     if (buttons & (Qt::BackButton | Qt::ForwardButton)) {
1500         // Do not select items when clicking the back/forward buttons, see
1501         // https://bugs.kde.org/show_bug.cgi?id=327412.
1502         return true;
1503     }
1504
1505     if (m_view->isAboveExpansionToggle(m_pressedIndex.value_or(-1), m_pressedMousePos)) {
1506         m_selectionManager->endAnchoredSelection();
1507         m_selectionManager->setCurrentItem(m_pressedIndex.value());
1508         m_selectionManager->beginAnchoredSelection(m_pressedIndex.value());
1509         return true;
1510     }
1511
1512     m_selectionTogglePressed = m_view->isAboveSelectionToggle(m_pressedIndex.value_or(-1), m_pressedMousePos);
1513     if (m_selectionTogglePressed) {
1514         m_selectionManager->setSelected(m_pressedIndex.value(), 1, KItemListSelectionManager::Toggle);
1515         // The previous anchored selection has been finished already in
1516         // KItemListSelectionManager::setSelected(). We can safely change
1517         // the current item and start a new anchored selection now.
1518         m_selectionManager->setCurrentItem(m_pressedIndex.value());
1519         m_selectionManager->beginAnchoredSelection(m_pressedIndex.value());
1520         return true;
1521     }
1522
1523     const bool shiftPressed = modifiers & Qt::ShiftModifier;
1524     const bool controlPressed = (modifiers & Qt::ControlModifier) || m_selectionMode; // Keeping selectionMode similar to pressing control will hopefully
1525                                                                                       // simplify the overall logic and possibilities both for users and devs.
1526     const bool leftClick = buttons & Qt::LeftButton;
1527     const bool rightClick = buttons & Qt::RightButton;
1528
1529     // The previous selection is cleared if either
1530     // 1. The selection mode is SingleSelection, or
1531     // 2. the selection mode is MultiSelection, and *none* of the following conditions are met:
1532     //    a) Shift or Control are pressed.
1533     //    b) The clicked item is selected already. In that case, the user might want to:
1534     //       - start dragging multiple items, or
1535     //       - open the context menu and perform an action for all selected items.
1536     const bool shiftOrControlPressed = shiftPressed || controlPressed;
1537     const bool pressedItemAlreadySelected = m_pressedIndex.has_value() && m_selectionManager->isSelected(m_pressedIndex.value());
1538     const bool clearSelection = m_selectionBehavior == SingleSelection || (!shiftOrControlPressed && !pressedItemAlreadySelected);
1539
1540     // When this method returns false, a rubberBand selection is created using KItemListController::startRubberBand via the caller.
1541     if (clearSelection) {
1542         const int selectedItemsCount = m_selectionManager->selectedItems().count();
1543         m_selectionManager->clearSelection();
1544         // clear and bail when we got an existing multi-selection
1545         if (selectedItemsCount > 1 && m_pressedIndex.has_value()) {
1546             const auto row = m_view->m_visibleItems.value(m_pressedIndex.value());
1547             const auto mappedPos = row->mapFromItem(m_view, pos);
1548             if (pressedItemAlreadySelected || row->iconRect().contains(mappedPos) || row->textRect().contains(mappedPos)) {
1549                 // we are indeed inside the text/icon rect, keep m_pressedIndex what it is
1550                 // and short-circuit for single-click activation (it will then propagate to onRelease and activate the item)
1551                 // or we just keep going for double-click activation
1552                 if (m_view->style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick) || m_singleClickActivationEnforced) {
1553                     if (!pressedItemAlreadySelected) {
1554                         // An unselected item was clicked directly while deselecting multiple other items so we select it.
1555                         m_selectionManager->setSelected(m_pressedIndex.value(), 1, KItemListSelectionManager::Toggle);
1556                         m_selectionManager->setCurrentItem(m_pressedIndex.value());
1557                         m_selectionManager->beginAnchoredSelection(m_pressedIndex.value());
1558                     }
1559                     return true; // event handled, don't create rubber band
1560                 }
1561             } else {
1562                 // we're not inside the text/icon rect, as we've already cleared the selection
1563                 // we can just stop here and make sure handlers down the line (i.e. onRelease) don't activate
1564                 m_pressedIndex.reset();
1565                 // we don't stop event propagation and proceed to create a rubber band and let onRelease
1566                 // decide (based on m_pressedIndex) whether we're in a drag (drag => new rubber band, click => don't select the item)
1567                 return false;
1568             }
1569         }
1570     } else if (pressedItemAlreadySelected && !shiftOrControlPressed && leftClick) {
1571         // The user might want to start dragging multiple items, but if he clicks the item
1572         // in order to trigger it instead, the other selected items must be deselected.
1573         // However, we do not know yet what the user is going to do.
1574         // -> remember that the user pressed an item which had been selected already and
1575         //    clear the selection in mouseReleaseEvent(), unless the items are dragged.
1576         m_clearSelectionIfItemsAreNotDragged = true;
1577
1578         if (m_selectionManager->selectedItems().count() == 1 && m_view->isAboveText(m_pressedIndex.value_or(-1), m_pressedMousePos)) {
1579             Q_EMIT selectedItemTextPressed(m_pressedIndex.value_or(-1));
1580         }
1581     }
1582
1583     if (!shiftPressed) {
1584         // Finish the anchored selection before the current index is changed
1585         m_selectionManager->endAnchoredSelection();
1586     }
1587
1588     if (rightClick) {
1589         // Do header hit check and short circuit before commencing any state changing effects
1590         if (m_view->headerBoundaries().contains(pos)) {
1591             Q_EMIT headerContextMenuRequested(screenPos);
1592             return true;
1593         }
1594
1595         // Stop rubber band from persisting after right-clicks
1596         KItemListRubberBand *rubberBand = m_view->rubberBand();
1597         if (rubberBand->isActive()) {
1598             disconnect(rubberBand, &KItemListRubberBand::endPositionChanged, this, &KItemListController::slotRubberBandChanged);
1599             rubberBand->setActive(false);
1600             m_view->setAutoScroll(false);
1601         }
1602     }
1603
1604     if (m_pressedIndex.has_value()) {
1605         // The hover highlight area of an item is being pressed.
1606         m_selectionManager->setCurrentItem(m_pressedIndex.value());
1607         const auto row = m_view->m_visibleItems.value(m_pressedIndex.value()); // anything outside of row.contains() will be the empty region of the row rect
1608         const bool hitTargetIsRowEmptyRegion = !row->contains(row->mapFromItem(m_view, pos));
1609         // again, when this method returns false, a rubberBand selection is created as the event is not consumed;
1610         // createRubberBand here tells us whether to return true or false.
1611         bool createRubberBand = (hitTargetIsRowEmptyRegion && m_selectionManager->selectedItems().isEmpty());
1612
1613         if (rightClick && hitTargetIsRowEmptyRegion) {
1614             // We have a right click outside the icon and text rect but within the hover highlight area
1615             // but it is unclear if this means that a selection rectangle for an item was clicked or the background of the view.
1616             if (m_selectionManager->selectedItems().contains(m_pressedIndex.value())) {
1617                 // The selection rectangle for an item was clicked
1618                 Q_EMIT itemContextMenuRequested(m_pressedIndex.value(), screenPos);
1619             } else {
1620                 row->setHovered(false); // Removes the hover highlight so the context menu doesn't look like it applies to the row.
1621                 Q_EMIT viewContextMenuRequested(screenPos);
1622             }
1623             return true;
1624         }
1625
1626         switch (m_selectionBehavior) {
1627         case NoSelection:
1628             break;
1629
1630         case SingleSelection:
1631             m_selectionManager->setSelected(m_pressedIndex.value());
1632             break;
1633
1634         case MultiSelection:
1635             if (controlPressed && !shiftPressed && leftClick) {
1636                 // A left mouse button press is happening on an item while control is pressed. This either means a user wants to:
1637                 // - toggle the selection of item(s) or
1638                 // - they want to begin a drag on the item(s) to copy them.
1639                 // We rule out the latter, if the item is not clicked directly and was unselected previously.
1640                 const auto row = m_view->m_visibleItems.value(m_pressedIndex.value());
1641                 const auto mappedPos = row->mapFromItem(m_view, pos);
1642                 if (!row->iconRect().contains(mappedPos) && !row->textRect().contains(mappedPos) && !pressedItemAlreadySelected) {
1643                     createRubberBand = true;
1644                 } else {
1645                     m_selectionManager->setSelected(m_pressedIndex.value(), 1, KItemListSelectionManager::Toggle);
1646                     m_selectionManager->beginAnchoredSelection(m_pressedIndex.value());
1647                     createRubberBand = false; // multi selection, don't propagate any further
1648                     // This will be the start of an item drag-to-copy operation if the user now moves the mouse before releasing the mouse button.
1649                 }
1650             } else if (!shiftPressed || !m_selectionManager->isAnchoredSelectionActive()) {
1651                 // Select the pressed item and start a new anchored selection
1652                 m_selectionManager->setSelected(m_pressedIndex.value(), 1, KItemListSelectionManager::Select);
1653                 m_selectionManager->beginAnchoredSelection(m_pressedIndex.value());
1654             }
1655             break;
1656
1657         default:
1658             Q_ASSERT(false);
1659             break;
1660         }
1661
1662         if (rightClick) {
1663             Q_EMIT itemContextMenuRequested(m_pressedIndex.value(), screenPos);
1664         }
1665         return !createRubberBand;
1666     }
1667
1668     if (rightClick) {
1669         // header right click handling would have been done before this so just normal context
1670         // menu here is fine
1671         Q_EMIT viewContextMenuRequested(screenPos);
1672         return true;
1673     }
1674
1675     return false;
1676 }
1677
1678 bool KItemListController::onRelease(const QPointF &pos, const Qt::KeyboardModifiers modifiers, const Qt::MouseButtons buttons, bool touch)
1679 {
1680     const bool isAboveSelectionToggle = m_view->isAboveSelectionToggle(m_pressedIndex.value_or(-1), m_pressedMousePos);
1681     if (isAboveSelectionToggle) {
1682         m_selectionTogglePressed = false;
1683         return true;
1684     }
1685
1686     if (!isAboveSelectionToggle && m_selectionTogglePressed) {
1687         m_selectionManager->setSelected(m_pressedIndex.value_or(-1), 1, KItemListSelectionManager::Toggle);
1688         m_selectionTogglePressed = false;
1689         return true;
1690     }
1691
1692     const bool controlPressed = modifiers & Qt::ControlModifier;
1693     const bool shiftOrControlPressed = modifiers & Qt::ShiftModifier || controlPressed;
1694
1695     const std::optional<int> index = m_view->itemAt(pos);
1696
1697     KItemListRubberBand *rubberBand = m_view->rubberBand();
1698     bool rubberBandRelease = false;
1699     if (rubberBand->isActive()) {
1700         disconnect(rubberBand, &KItemListRubberBand::endPositionChanged, this, &KItemListController::slotRubberBandChanged);
1701         rubberBand->setActive(false);
1702         m_oldSelection.clear();
1703         m_view->setAutoScroll(false);
1704         rubberBandRelease = true;
1705         // We check for actual rubber band drag here: if delta between start and end is less than drag threshold,
1706         // then we have a single click on one of the rows
1707         if ((rubberBand->endPosition() - rubberBand->startPosition()).manhattanLength() < QApplication::startDragDistance()) {
1708             rubberBandRelease = false; // since we're only selecting, unmark rubber band release flag
1709             // m_pressedIndex will have no value if we came from a multi-selection clearing onPress
1710             // in that case, we don't select anything
1711             if (index.has_value() && m_pressedIndex.has_value()) {
1712                 if (controlPressed && m_selectionBehavior == MultiSelection) {
1713                     m_selectionManager->setSelected(m_pressedIndex.value(), 1, KItemListSelectionManager::Toggle);
1714                 } else {
1715                     m_selectionManager->setSelected(index.value());
1716                 }
1717                 if (!m_selectionManager->isAnchoredSelectionActive()) {
1718                     m_selectionManager->beginAnchoredSelection(index.value());
1719                 }
1720             }
1721         }
1722     }
1723
1724     if (index.has_value() && index == m_pressedIndex) {
1725         // The release event is done above the same item as the press event
1726
1727         if (m_clearSelectionIfItemsAreNotDragged) {
1728             // A selected item has been clicked, but no drag operation has been started
1729             // -> clear the rest of the selection.
1730             m_selectionManager->clearSelection();
1731             m_selectionManager->setSelected(m_pressedIndex.value(), 1, KItemListSelectionManager::Select);
1732             m_selectionManager->beginAnchoredSelection(m_pressedIndex.value());
1733         }
1734
1735         if (buttons & Qt::LeftButton) {
1736             bool emitItemActivated = true;
1737             if (m_view->isAboveExpansionToggle(index.value(), pos)) {
1738                 const bool expanded = m_model->isExpanded(index.value());
1739                 m_model->setExpanded(index.value(), !expanded);
1740
1741                 Q_EMIT itemExpansionToggleClicked(index.value());
1742                 emitItemActivated = false;
1743             } else if (shiftOrControlPressed && m_selectionBehavior != SingleSelection) {
1744                 // The mouse click should only update the selection, not trigger the item, except when
1745                 // we are in single selection mode
1746                 emitItemActivated = false;
1747             } else {
1748                 const bool singleClickActivation = m_view->style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick) || m_singleClickActivationEnforced;
1749                 if (!singleClickActivation) {
1750                     emitItemActivated = touch && !m_selectionMode;
1751                 } else {
1752                     // activate on single click only if we didn't come from a rubber band release
1753                     emitItemActivated = !rubberBandRelease;
1754                 }
1755             }
1756             if (emitItemActivated) {
1757                 Q_EMIT itemActivated(index.value());
1758             }
1759         } else if (buttons & Qt::MiddleButton) {
1760             Q_EMIT itemMiddleClicked(index.value());
1761         }
1762     }
1763
1764     m_pressedMousePos = QPointF();
1765     m_pressedIndex = std::nullopt;
1766     m_clearSelectionIfItemsAreNotDragged = false;
1767     return false;
1768 }
1769
1770 void KItemListController::startRubberBand()
1771 {
1772     if (m_selectionBehavior == MultiSelection) {
1773         QPointF startPos = m_pressedMousePos;
1774         if (m_view->scrollOrientation() == Qt::Vertical) {
1775             startPos.ry() += m_view->scrollOffset();
1776             if (m_view->itemSize().width() < 0) {
1777                 // Use a special rubberband for views that have only one column and
1778                 // expand the rubberband to use the whole width of the view.
1779                 startPos.setX(0);
1780             }
1781         } else {
1782             startPos.rx() += m_view->scrollOffset();
1783         }
1784
1785         m_oldSelection = m_selectionManager->selectedItems();
1786         KItemListRubberBand *rubberBand = m_view->rubberBand();
1787         rubberBand->setStartPosition(startPos);
1788         rubberBand->setEndPosition(startPos);
1789         rubberBand->setActive(true);
1790         connect(rubberBand, &KItemListRubberBand::endPositionChanged, this, &KItemListController::slotRubberBandChanged);
1791         m_view->setAutoScroll(true);
1792     }
1793 }
1794
1795 void KItemListController::slotStateChanged(QScroller::State newState)
1796 {
1797     if (newState == QScroller::Scrolling) {
1798         m_scrollerIsScrolling = true;
1799     } else if (newState == QScroller::Inactive) {
1800         m_scrollerIsScrolling = false;
1801     }
1802 }