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_pressedMouseGlobalPos()
  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     const QPointF pressedMousePos = m_view->transform().map(m_view->scene()->views().first()->mapFromGlobal(m_pressedMouseGlobalPos.toPoint()));
 190
 191     QHashIterator<KItemListWidget *, KItemListGroupHeader *> it(m_view->m_visibleGroups);
 192     while (it.hasNext()) {
 193         it.next();
 194         KItemListGroupHeader *groupHeader = it.value();
 195         const QPointF mappedToGroup = groupHeader->mapFromItem(nullptr, pressedMousePos);
 196         if (groupHeader->contains(mappedToGroup)) {
 197             return it.key()->index();
 198         }
 199     }
 200     return -1;
 201 }
 202
 203 void KItemListController::setAutoActivationDelay(int delay)
 204 {
 205     m_autoActivationTimer->setInterval(delay);
 206 }
 207
 208 int KItemListController::autoActivationDelay() const
 209 {
 210     return m_autoActivationTimer->interval();
 211 }
 212
 213 void KItemListController::setSingleClickActivationEnforced(bool singleClick)
 214 {
 215     m_singleClickActivationEnforced = singleClick;
 216 }
 217
 218 bool KItemListController::singleClickActivationEnforced() const
 219 {
 220     return m_singleClickActivationEnforced;
 221 }
 222
 223 void KItemListController::setSelectionModeEnabled(bool enabled)
 224 {
 225     m_selectionMode = enabled;
 226 }
 227
 228 bool KItemListController::selectionMode() const
 229 {
 230     return m_selectionMode;
 231 }
 232
 233 bool KItemListController::isSearchAsYouTypeActive() const
 234 {
 235     return m_keyboardManager->isSearchAsYouTypeActive();
 236 }
 237
 238 bool KItemListController::keyPressEvent(QKeyEvent *event)
 239 {
 240     int index = m_selectionManager->currentItem();
 241     int key = event->key();
 242     const bool shiftPressed = event->modifiers() & Qt::ShiftModifier;
 243
 244     // Handle the expanding/collapsing of items
 245     // expand / collapse all selected directories
 246     if (m_view->supportsItemExpanding() && m_model->isExpandable(index) && (key == Qt::Key_Right || key == Qt::Key_Left)) {
 247         const bool expandOrCollapse = key == Qt::Key_Right ? true : false;
 248         bool shouldReturn = m_model->setExpanded(index, expandOrCollapse);
 249
 250         // edit in reverse to preserve index of the first handled items
 251         const auto selectedItems = m_selectionManager->selectedItems();
 252         for (auto it = selectedItems.rbegin(); it != selectedItems.rend(); ++it) {
 253             shouldReturn |= m_model->setExpanded(*it, expandOrCollapse);
 254             if (!shiftPressed) {
 255                 m_selectionManager->setSelected(*it);
 256             }
 257         }
 258         if (shouldReturn) {
 259             // update keyboard anchors
 260             if (shiftPressed) {
 261                 m_keyboardAnchorIndex = selectedItems.count() > 0 ? qMin(index, selectedItems.last()) : index;
 262                 m_keyboardAnchorPos = keyboardAnchorPos(m_keyboardAnchorIndex);
 263             }
 264
 265             event->ignore();
 266             return true;
 267         }
 268     }
 269
 270     const bool controlPressed = event->modifiers() & Qt::ControlModifier;
 271     const bool shiftOrControlPressed = shiftPressed || controlPressed;
 272     const bool navigationPressed = key == Qt::Key_Home || key == Qt::Key_End || key == Qt::Key_PageUp || key == Qt::Key_PageDown || key == Qt::Key_Up
 273         || key == Qt::Key_Down || key == Qt::Key_Left || key == Qt::Key_Right;
 274
 275     const int itemCount = m_model->count();
 276
 277     // For horizontal scroll orientation, transform
 278     // the arrow keys to simplify the event handling.
 279     if (m_view->scrollOrientation() == Qt::Horizontal) {
 280         switch (key) {
 281         case Qt::Key_Up:
 282             key = Qt::Key_Left;
 283             break;
 284         case Qt::Key_Down:
 285             key = Qt::Key_Right;
 286             break;
 287         case Qt::Key_Left:
 288             key = Qt::Key_Up;
 289             break;
 290         case Qt::Key_Right:
 291             key = Qt::Key_Down;
 292             break;
 293         default:
 294             break;
 295         }
 296     }
 297
 298     const bool selectSingleItem = m_selectionBehavior != NoSelection && itemCount == 1 && navigationPressed;
 299
 300     if (selectSingleItem) {
 301         const int current = m_selectionManager->currentItem();
 302         m_selectionManager->setSelected(current);
 303         return true;
 304     }
 305
 306     switch (key) {
 307     case Qt::Key_Home:
 308         index = 0;
 309         m_keyboardAnchorIndex = index;
 310         m_keyboardAnchorPos = keyboardAnchorPos(index);
 311         break;
 312
 313     case Qt::Key_End:
 314         index = itemCount - 1;
 315         m_keyboardAnchorIndex = index;
 316         m_keyboardAnchorPos = keyboardAnchorPos(index);
 317         break;
 318
 319     case Qt::Key_Left:
 320         if (index > 0) {
 321             const int expandedParentsCount = m_model->expandedParentsCount(index);
 322             if (expandedParentsCount == 0) {
 323                 --index;
 324             } else {
 325                 // Go to the parent of the current item.
 326                 do {
 327                     --index;
 328                 } while (index > 0 && m_model->expandedParentsCount(index) == expandedParentsCount);
 329             }
 330             m_keyboardAnchorIndex = index;
 331             m_keyboardAnchorPos = keyboardAnchorPos(index);
 332         }
 333         break;
 334
 335     case Qt::Key_Right:
 336         if (index < itemCount - 1) {
 337             ++index;
 338             m_keyboardAnchorIndex = index;
 339             m_keyboardAnchorPos = keyboardAnchorPos(index);
 340         }
 341         break;
 342
 343     case Qt::Key_Up:
 344         updateKeyboardAnchor();
 345         if (shiftPressed && !m_selectionManager->isAnchoredSelectionActive() && m_selectionManager->isSelected(index)) {
 346             m_selectionManager->beginAnchoredSelection(index);
 347         }
 348         index = previousRowIndex(index);
 349         break;
 350
 351     case Qt::Key_Down:
 352         updateKeyboardAnchor();
 353         if (shiftPressed && !m_selectionManager->isAnchoredSelectionActive() && m_selectionManager->isSelected(index)) {
 354             m_selectionManager->beginAnchoredSelection(index);
 355         }
 356         index = nextRowIndex(index);
 357         break;
 358
 359     case Qt::Key_PageUp:
 360         if (m_view->scrollOrientation() == Qt::Horizontal) {
 361             // The new current index should correspond to the first item in the current column.
 362             int newIndex = qMax(index - 1, 0);
 363             while (newIndex != index && m_view->itemRect(newIndex).topLeft().y() < m_view->itemRect(index).topLeft().y()) {
 364                 index = newIndex;
 365                 newIndex = qMax(index - 1, 0);
 366             }
 367             m_keyboardAnchorIndex = index;
 368             m_keyboardAnchorPos = keyboardAnchorPos(index);
 369         } else {
 370             const qreal currentItemBottom = m_view->itemRect(index).bottomLeft().y();
 371             const qreal height = m_view->geometry().height();
 372
 373             // The new current item should be the first item in the current
 374             // column whose itemRect's top coordinate is larger than targetY.
 375             const qreal targetY = currentItemBottom - height;
 376
 377             updateKeyboardAnchor();
 378             int newIndex = previousRowIndex(index);
 379             do {
 380                 index = newIndex;
 381                 updateKeyboardAnchor();
 382                 newIndex = previousRowIndex(index);
 383             } while (m_view->itemRect(newIndex).topLeft().y() > targetY && newIndex != index);
 384         }
 385         break;
 386
 387     case Qt::Key_PageDown:
 388         if (m_view->scrollOrientation() == Qt::Horizontal) {
 389             // The new current index should correspond to the last item in the current column.
 390             int newIndex = qMin(index + 1, m_model->count() - 1);
 391             while (newIndex != index && m_view->itemRect(newIndex).topLeft().y() > m_view->itemRect(index).topLeft().y()) {
 392                 index = newIndex;
 393                 newIndex = qMin(index + 1, m_model->count() - 1);
 394             }
 395             m_keyboardAnchorIndex = index;
 396             m_keyboardAnchorPos = keyboardAnchorPos(index);
 397         } else {
 398             const qreal currentItemTop = m_view->itemRect(index).topLeft().y();
 399             const qreal height = m_view->geometry().height();
 400
 401             // The new current item should be the last item in the current
 402             // column whose itemRect's bottom coordinate is smaller than targetY.
 403             const qreal targetY = currentItemTop + height;
 404
 405             updateKeyboardAnchor();
 406             int newIndex = nextRowIndex(index);
 407             do {
 408                 index = newIndex;
 409                 updateKeyboardAnchor();
 410                 newIndex = nextRowIndex(index);
 411             } while (m_view->itemRect(newIndex).bottomLeft().y() < targetY && newIndex != index);
 412         }
 413         break;
 414
 415     case Qt::Key_Enter:
 416     case Qt::Key_Return: {
 417         const KItemSet selectedItems = m_selectionManager->selectedItems();
 418         if (selectedItems.count() >= 2) {
 419             Q_EMIT itemsActivated(selectedItems);
 420         } else if (selectedItems.count() == 1) {
 421             Q_EMIT itemActivated(selectedItems.first());
 422         } else {
 423             Q_EMIT itemActivated(index);
 424         }
 425         break;
 426     }
 427
 428     case Qt::Key_Escape:
 429         if (m_selectionMode) {
 430             Q_EMIT selectionModeChangeRequested(false);
 431         } else if (m_selectionBehavior != SingleSelection) {
 432             m_selectionManager->clearSelection();
 433         }
 434         m_keyboardManager->cancelSearch();
 435         Q_EMIT escapePressed();
 436         break;
 437
 438     case Qt::Key_Space:
 439         if (m_selectionBehavior == MultiSelection) {
 440             if (controlPressed) {
 441                 // Toggle the selection state of the current item.
 442                 m_selectionManager->endAnchoredSelection();
 443                 m_selectionManager->setSelected(index, 1, KItemListSelectionManager::Toggle);
 444                 m_selectionManager->beginAnchoredSelection(index);
 445                 break;
 446             } else {
 447                 // Select the current item if it is not selected yet.
 448                 const int current = m_selectionManager->currentItem();
 449                 if (!m_selectionManager->isSelected(current)) {
 450                     m_selectionManager->setSelected(current);
 451                     break;
 452                 }
 453             }
 454         }
 455         Q_FALLTHROUGH(); // fall through to the default case and add the Space to the current search string.
 456     default:
 457         m_keyboardManager->addKeys(event->text());
 458         // Make sure unconsumed events get propagated up the chain. #302329
 459         event->ignore();
 460         return false;
 461     }
 462
 463     if (m_selectionManager->currentItem() != index) {
 464         switch (m_selectionBehavior) {
 465         case NoSelection:
 466             m_selectionManager->setCurrentItem(index);
 467             break;
 468
 469         case SingleSelection:
 470             m_selectionManager->setCurrentItem(index);
 471             m_selectionManager->clearSelection();
 472             m_selectionManager->setSelected(index, 1);
 473             break;
 474
 475         case MultiSelection:
 476             if (controlPressed) {
 477                 m_selectionManager->endAnchoredSelection();
 478             }
 479
 480             m_selectionManager->setCurrentItem(index);
 481
 482             if (!shiftOrControlPressed) {
 483                 m_selectionManager->clearSelection();
 484                 m_selectionManager->setSelected(index, 1);
 485             }
 486
 487             if (!shiftPressed) {
 488                 m_selectionManager->beginAnchoredSelection(index);
 489             }
 490             break;
 491         }
 492     }
 493
 494     if (navigationPressed) {
 495         m_view->scrollToItem(index);
 496     }
 497     return true;
 498 }
 499
 500 void KItemListController::slotChangeCurrentItem(const QString &text, bool searchFromNextItem)
 501 {
 502     if (!m_model || m_model->count() == 0) {
 503         return;
 504     }
 505     int index;
 506     if (searchFromNextItem) {
 507         const int currentIndex = m_selectionManager->currentItem();
 508         index = m_model->indexForKeyboardSearch(text, (currentIndex + 1) % m_model->count());
 509     } else {
 510         index = m_model->indexForKeyboardSearch(text, 0);
 511     }
 512     if (index >= 0) {
 513         m_selectionManager->setCurrentItem(index);
 514
 515         if (m_selectionBehavior != NoSelection) {
 516             m_selectionManager->replaceSelection(index);
 517             m_selectionManager->beginAnchoredSelection(index);
 518         }
 519
 520         m_view->scrollToItem(index, KItemListView::ViewItemPosition::Beginning);
 521     }
 522 }
 523
 524 void KItemListController::slotAutoActivationTimeout()
 525 {
 526     if (!m_model || !m_view) {
 527         return;
 528     }
 529
 530     const int index = m_autoActivationTimer->property("index").toInt();
 531     if (index < 0 || index >= m_model->count()) {
 532         return;
 533     }
 534
 535     /* m_view->isUnderMouse() fixes a bug in the Folder-View-Panel and in the
 536      * Places-Panel.
 537      *
 538      * Bug: When you drag a file onto a Folder-View-Item or a Places-Item and
 539      * then move away before the auto-activation timeout triggers, than the
 540      * item still becomes activated/expanded.
 541      *
 542      * See Bug 293200 and 305783
 543      */
 544     if (m_view->isUnderMouse()) {
 545         if (m_view->supportsItemExpanding() && m_model->isExpandable(index)) {
 546             const bool expanded = m_model->isExpanded(index);
 547             m_model->setExpanded(index, !expanded);
 548         } else if (m_autoActivationBehavior != ExpansionOnly) {
 549             Q_EMIT itemActivated(index);
 550         }
 551     }
 552 }
 553
 554 bool KItemListController::inputMethodEvent(QInputMethodEvent *event)
 555 {
 556     Q_UNUSED(event)
 557     return false;
 558 }
 559
 560 bool KItemListController::mousePressEvent(QGraphicsSceneMouseEvent *event, const QTransform &transform)
 561 {
 562     m_mousePress = true;
 563     m_pressedMouseGlobalPos = event->screenPos();
 564
 565     if (event->source() == Qt::MouseEventSynthesizedByQt && m_isTouchEvent) {
 566         return false;
 567     }
 568
 569     if (!m_view) {
 570         return false;
 571     }
 572
 573     const QPointF pressedMousePos = transform.map(event->pos());
 574     m_pressedIndex = m_view->itemAt(pressedMousePos);
 575
 576     const Qt::MouseButtons buttons = event->buttons();
 577
 578     if (!onPress(event->screenPos(), event->pos(), event->modifiers(), buttons)) {
 579         startRubberBand();
 580         return false;
 581     }
 582
 583     return true;
 584 }
 585
 586 bool KItemListController::mouseMoveEvent(QGraphicsSceneMouseEvent *event, const QTransform &transform)
 587 {
 588     if (!m_view) {
 589         return false;
 590     }
 591
 592     if (m_view->m_tapAndHoldIndicator->isActive()) {
 593         m_view->m_tapAndHoldIndicator->setActive(false);
 594     }
 595
 596     if (event->source() == Qt::MouseEventSynthesizedByQt && !m_dragActionOrRightClick && m_isTouchEvent) {
 597         return false;
 598     }
 599
 600     if (m_pressedIndex.has_value() && !m_view->rubberBand()->isActive()) {
 601         // Check whether a dragging should be started
 602         if (event->buttons() & Qt::LeftButton) {
 603             const auto distance = (event->screenPos() - m_pressedMouseGlobalPos).manhattanLength();
 604             if (distance >= QApplication::startDragDistance()) {
 605                 if (!m_selectionManager->isSelected(m_pressedIndex.value())) {
 606                     // Always assure that the dragged item gets selected. Usually this is already
 607                     // done on the mouse-press event, but when using the selection-toggle on a
 608                     // selected item the dragged item is not selected yet.
 609                     m_selectionManager->setSelected(m_pressedIndex.value(), 1, KItemListSelectionManager::Toggle);
 610                 } else {
 611                     // A selected item has been clicked to drag all selected items
 612                     // -> the selection should not be cleared when the mouse button is released.
 613                     m_clearSelectionIfItemsAreNotDragged = false;
 614                 }
 615                 startDragging();
 616                 m_mousePress = false;
 617             }
 618         }
 619     } else {
 620         KItemListRubberBand *rubberBand = m_view->rubberBand();
 621         if (rubberBand->isActive()) {
 622             QPointF endPos = transform.map(event->pos());
 623
 624             // Update the current item.
 625             const std::optional<int> newCurrent = m_view->itemAt(endPos);
 626             if (newCurrent.has_value()) {
 627                 // It's expected that the new current index is also the new anchor (bug 163451).
 628                 m_selectionManager->endAnchoredSelection();
 629                 m_selectionManager->setCurrentItem(newCurrent.value());
 630                 m_selectionManager->beginAnchoredSelection(newCurrent.value());
 631             }
 632
 633             if (m_view->scrollOrientation() == Qt::Vertical) {
 634                 endPos.ry() += m_view->scrollOffset();
 635             } else {
 636                 endPos.rx() += m_view->scrollOffset();
 637             }
 638             rubberBand->setEndPosition(endPos);
 639         }
 640     }
 641
 642     return false;
 643 }
 644
 645 bool KItemListController::mouseReleaseEvent(QGraphicsSceneMouseEvent *event, const QTransform &transform)
 646 {
 647     m_mousePress = false;
 648     m_isTouchEvent = false;
 649
 650     if (!m_view) {
 651         return false;
 652     }
 653
 654     if (m_view->m_tapAndHoldIndicator->isActive()) {
 655         m_view->m_tapAndHoldIndicator->setActive(false);
 656     }
 657
 658     KItemListRubberBand *rubberBand = m_view->rubberBand();
 659     if (event->source() == Qt::MouseEventSynthesizedByQt && !rubberBand->isActive() && m_isTouchEvent) {
 660         return false;
 661     }
 662
 663     Q_EMIT mouseButtonReleased(m_pressedIndex.value_or(-1), event->buttons());
 664
 665     return onRelease(transform.map(event->pos()), event->modifiers(), event->button(), false);
 666 }
 667
 668 bool KItemListController::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event, const QTransform &transform)
 669 {
 670     const QPointF pos = transform.map(event->pos());
 671     const std::optional<int> index = m_view->itemAt(pos);
 672
 673     // Expand item if desired - See Bug 295573
 674     if (m_mouseDoubleClickAction != ActivateItemOnly) {
 675         if (m_view && m_model && m_view->supportsItemExpanding() && m_model->isExpandable(index.value_or(-1))) {
 676             const bool expanded = m_model->isExpanded(index.value());
 677             m_model->setExpanded(index.value(), !expanded);
 678         }
 679     }
 680
 681     if (event->button() & Qt::RightButton) {
 682         return false;
 683     }
 684
 685     bool emitItemActivated = !(m_view->style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick) || m_singleClickActivationEnforced)
 686         && (event->button() & Qt::LeftButton) && index.has_value() && index.value() < m_model->count();
 687     if (emitItemActivated) {
 688         Q_EMIT itemActivated(index.value());
 689     }
 690     return false;
 691 }
 692
 693 bool KItemListController::contextMenuEvent(QContextMenuEvent *event)
 694 {
 695     if (event->reason() == QContextMenuEvent::Keyboard) {
 696         // Emit the signal itemContextMenuRequested() if at least one item is selected.
 697         // Otherwise the signal viewContextMenuRequested() will be emitted.
 698         const KItemSet selectedItems = m_selectionManager->selectedItems();
 699         int index = -1;
 700         if (selectedItems.count() >= 2) {
 701             const int currentItemIndex = m_selectionManager->currentItem();
 702             index = selectedItems.contains(currentItemIndex) ? currentItemIndex : selectedItems.first();
 703         } else if (selectedItems.count() == 1) {
 704             index = selectedItems.first();
 705         }
 706
 707         if (index >= 0) {
 708             const QRectF contextRect = m_view->itemContextRect(index);
 709             const QPointF pos(m_view->scene()->views().first()->mapToGlobal(contextRect.bottomRight().toPoint()));
 710             Q_EMIT itemContextMenuRequested(index, pos);
 711         } else {
 712             Q_EMIT viewContextMenuRequested(event->globalPos());
 713         }
 714         return true;
 715     }
 716
 717     const auto pos = event->pos();
 718     const auto globalPos = event->globalPos();
 719
 720     if (m_view->headerBoundaries().contains(pos)) {
 721         Q_EMIT headerContextMenuRequested(globalPos);
 722         return true;
 723     }
 724
 725     const auto pressedItem = m_view->itemAt(pos);
 726     // We only open a context menu for the pressed item if it is selected.
 727     // That's because the same click might have de-selected the item or because the press was only in the row of the item but not on it.
 728     if (pressedItem && m_selectionManager->selectedItems().contains(pressedItem.value())) {
 729         // The selection rectangle for an item was clicked
 730         Q_EMIT itemContextMenuRequested(m_pressedIndex.value(), globalPos);
 731         return true;
 732     }
 733
 734     // Remove any hover highlights so the context menu doesn't look like it applies to a row.
 735     const auto widgets = m_view->visibleItemListWidgets();
 736     for (KItemListWidget *widget : widgets) {
 737         if (widget->isHovered()) {
 738             widget->setHovered(false);
 739             Q_EMIT itemUnhovered(widget->index());
 740         }
 741     }
 742     Q_EMIT viewContextMenuRequested(globalPos);
 743     return true;
 744 }
 745
 746 bool KItemListController::dragEnterEvent(QGraphicsSceneDragDropEvent *event, const QTransform &transform)
 747 {
 748     Q_UNUSED(event)
 749     Q_UNUSED(transform)
 750
 751     DragAndDropHelper::clearUrlListMatchesUrlCache();
 752
 753     return false;
 754 }
 755
 756 bool KItemListController::dragLeaveEvent(QGraphicsSceneDragDropEvent *event, const QTransform &transform)
 757 {
 758     Q_UNUSED(event)
 759     Q_UNUSED(transform)
 760
 761     m_autoActivationTimer->stop();
 762     m_view->setAutoScroll(false);
 763     m_view->hideDropIndicator();
 764
 765     KItemListWidget *widget = hoveredWidget();
 766     if (widget) {
 767         widget->setHovered(false);
 768         Q_EMIT itemUnhovered(widget->index());
 769     }
 770     return false;
 771 }
 772
 773 bool KItemListController::dragMoveEvent(QGraphicsSceneDragDropEvent *event, const QTransform &transform)
 774 {
 775     if (!m_model || !m_view) {
 776         return false;
 777     }
 778
 779     QUrl hoveredDir = m_model->directory();
 780     KItemListWidget *oldHoveredWidget = hoveredWidget();
 781
 782     const QPointF pos = transform.map(event->pos());
 783     KItemListWidget *newHoveredWidget = widgetForDropPos(pos);
 784     int index = -1;
 785
 786     if (oldHoveredWidget != newHoveredWidget) {
 787         m_autoActivationTimer->stop();
 788
 789         if (oldHoveredWidget) {
 790             oldHoveredWidget->setHovered(false);
 791             Q_EMIT itemUnhovered(oldHoveredWidget->index());
 792         }
 793     }
 794
 795     if (newHoveredWidget) {
 796         bool droppingBetweenItems = false;
 797         if (m_model->sortRole().isEmpty()) {
 798             // The model supports inserting items between other items.
 799             droppingBetweenItems = (m_view->showDropIndicator(pos) >= 0);
 800         }
 801
 802         index = newHoveredWidget->index();
 803
 804         if (m_model->isDir(index)) {
 805             hoveredDir = m_model->url(index);
 806         }
 807
 808         if (!droppingBetweenItems) {
 809             // Something has been dragged on an item.
 810             m_view->hideDropIndicator();
 811             if (!newHoveredWidget->isHovered()) {
 812                 newHoveredWidget->setHovered(true);
 813                 Q_EMIT itemHovered(index);
 814             }
 815
 816             if (!m_autoActivationTimer->isActive() && m_autoActivationTimer->interval() >= 0) {
 817                 m_autoActivationTimer->setProperty("index", index);
 818                 m_autoActivationTimer->start();
 819             }
 820         } else {
 821             m_autoActivationTimer->stop();
 822             if (newHoveredWidget && newHoveredWidget->isHovered()) {
 823                 newHoveredWidget->setHovered(false);
 824                 Q_EMIT itemUnhovered(index);
 825             }
 826         }
 827     } else {
 828         m_view->hideDropIndicator();
 829     }
 830
 831     if (DragAndDropHelper::urlListMatchesUrl(event->mimeData()->urls(), hoveredDir)) {
 832         event->setDropAction(Qt::IgnoreAction);
 833         event->ignore();
 834     } else {
 835         if (m_model->supportsDropping(index)) {
 836             event->setDropAction(event->proposedAction());
 837             event->accept();
 838         } else {
 839             event->setDropAction(Qt::IgnoreAction);
 840             event->ignore();
 841         }
 842     }
 843     return false;
 844 }
 845
 846 bool KItemListController::dropEvent(QGraphicsSceneDragDropEvent *event, const QTransform &transform)
 847 {
 848     if (!m_view) {
 849         return false;
 850     }
 851
 852     m_autoActivationTimer->stop();
 853     m_view->setAutoScroll(false);
 854
 855     const QPointF pos = transform.map(event->pos());
 856
 857     int dropAboveIndex = -1;
 858     if (m_model->sortRole().isEmpty()) {
 859         // The model supports inserting of items between other items.
 860         dropAboveIndex = m_view->showDropIndicator(pos);
 861     }
 862
 863     if (dropAboveIndex >= 0) {
 864         // Something has been dropped between two items.
 865         m_view->hideDropIndicator();
 866         Q_EMIT aboveItemDropEvent(dropAboveIndex, event);
 867     } else if (!event->mimeData()->hasFormat(m_model->blacklistItemDropEventMimeType())) {
 868         // Something has been dropped on an item or on an empty part of the view.
 869         const KItemListWidget *receivingWidget = widgetForDropPos(pos);
 870         if (receivingWidget) {
 871             Q_EMIT itemDropEvent(receivingWidget->index(), event);
 872         } else {
 873             Q_EMIT itemDropEvent(-1, event);
 874         }
 875     }
 876
 877     QAccessibleEvent accessibilityEvent(view(), QAccessible::DragDropEnd);
 878     QAccessible::updateAccessibility(&accessibilityEvent);
 879
 880     return true;
 881 }
 882
 883 bool KItemListController::hoverEnterEvent(QGraphicsSceneHoverEvent *event, const QTransform &transform)
 884 {
 885     Q_UNUSED(event)
 886     Q_UNUSED(transform)
 887     return false;
 888 }
 889
 890 bool KItemListController::hoverMoveEvent(QGraphicsSceneHoverEvent *event, const QTransform &transform)
 891 {
 892     Q_UNUSED(transform)
 893     if (!m_model || !m_view) {
 894         return false;
 895     }
 896
 897     // We identify the widget whose expansionArea had been hovered before this hoverMoveEvent() triggered.
 898     // we can't use hoveredWidget() here (it handles the icon+text rect, not the expansion rect)
 899     // like hoveredWidget(), we find the hovered widget for the expansion rect
 900     const auto visibleItemListWidgets = m_view->visibleItemListWidgets();
 901     const auto oldHoveredExpansionWidgetIterator = std::find_if(visibleItemListWidgets.begin(), visibleItemListWidgets.end(), [](auto &widget) {
 902         return widget->expansionAreaHovered();
 903     });
 904     const auto oldHoveredExpansionWidget =
 905         oldHoveredExpansionWidgetIterator == visibleItemListWidgets.end() ? std::nullopt : std::make_optional(*oldHoveredExpansionWidgetIterator);
 906
 907     const auto unhoverOldHoveredWidget = [&]() {
 908         if (auto oldHoveredWidget = hoveredWidget(); oldHoveredWidget) {
 909             // handle the text+icon one
 910             oldHoveredWidget->setHovered(false);
 911             Q_EMIT itemUnhovered(oldHoveredWidget->index());
 912         }
 913     };
 914
 915     const auto unhoverOldExpansionWidget = [&]() {
 916         if (oldHoveredExpansionWidget) {
 917             // then the expansion toggle
 918             (*oldHoveredExpansionWidget)->setExpansionAreaHovered(false);
 919         }
 920     };
 921
 922     const QPointF pos = transform.map(event->pos());
 923     if (KItemListWidget *newHoveredWidget = widgetForPos(pos); newHoveredWidget) {
 924         // something got hovered, work out which part and set hover for the appropriate widget
 925         const auto mappedPos = newHoveredWidget->mapFromItem(m_view, pos);
 926         const bool isOnExpansionToggle = newHoveredWidget->expansionToggleRect().contains(mappedPos);
 927
 928         if (isOnExpansionToggle) {
 929             // make sure we unhover the old one first if old!=new
 930             if (oldHoveredExpansionWidget && *oldHoveredExpansionWidget != newHoveredWidget) {
 931                 (*oldHoveredExpansionWidget)->setExpansionAreaHovered(false);
 932             }
 933             // 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)
 934             unhoverOldHoveredWidget();
 935
 936             newHoveredWidget->setExpansionAreaHovered(true);
 937         } else {
 938             // make sure we unhover the old one first if old!=new
 939             auto oldHoveredWidget = hoveredWidget();
 940             if (oldHoveredWidget && oldHoveredWidget != newHoveredWidget) {
 941                 oldHoveredWidget->setHovered(false);
 942                 Q_EMIT itemUnhovered(oldHoveredWidget->index());
 943             }
 944             // 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)
 945             unhoverOldExpansionWidget();
 946
 947             const bool isOverIconAndText = newHoveredWidget->iconRect().contains(mappedPos) || newHoveredWidget->textRect().contains(mappedPos);
 948             const bool hasMultipleSelection = m_selectionManager->selectedItems().count() > 1;
 949
 950             if (hasMultipleSelection && !isOverIconAndText) {
 951                 // In case we have multiple selections, clicking on any row will deselect the selection.
 952                 // So, as a visual cue for signalling that clicking anywhere won't select, but clear current highlights,
 953                 // we disable hover of the *row*(i.e. blank space to the right of the icon+text)
 954
 955                 // (no-op in this branch for masked hover)
 956             } else {
 957                 newHoveredWidget->setHoverPosition(mappedPos);
 958                 if (oldHoveredWidget != newHoveredWidget) {
 959                     newHoveredWidget->setHovered(true);
 960                     Q_EMIT itemHovered(newHoveredWidget->index());
 961                 }
 962             }
 963         }
 964     } else {
 965         // unhover any currently hovered expansion and text+icon widgets
 966         unhoverOldHoveredWidget();
 967         unhoverOldExpansionWidget();
 968     }
 969     return false;
 970 }
 971
 972 bool KItemListController::hoverLeaveEvent(QGraphicsSceneHoverEvent *event, const QTransform &transform)
 973 {
 974     Q_UNUSED(event)
 975     Q_UNUSED(transform)
 976
 977     m_mousePress = false;
 978     m_isTouchEvent = false;
 979
 980     if (!m_model || !m_view) {
 981         return false;
 982     }
 983
 984     const auto widgets = m_view->visibleItemListWidgets();
 985     for (KItemListWidget *widget : widgets) {
 986         if (widget->isHovered()) {
 987             widget->setHovered(false);
 988             Q_EMIT itemUnhovered(widget->index());
 989         }
 990     }
 991     return false;
 992 }
 993
 994 bool KItemListController::wheelEvent(QGraphicsSceneWheelEvent *event, const QTransform &transform)
 995 {
 996     Q_UNUSED(event)
 997     Q_UNUSED(transform)
 998     return false;
 999 }
1000
1001 bool KItemListController::resizeEvent(QGraphicsSceneResizeEvent *event, const QTransform &transform)
1002 {
1003     Q_UNUSED(event)
1004     Q_UNUSED(transform)
1005     return false;
1006 }
1007
1008 bool KItemListController::gestureEvent(QGestureEvent *event, const QTransform &transform)
1009 {
1010     if (!m_view) {
1011         return false;
1012     }
1013
1014     //you can touch on different views at the same time, but only one QWidget gets a mousePressEvent
1015     //we use this to get the right QWidget
1016     //the only exception is a tap gesture with state GestureStarted, we need to reset some variable
1017     if (!m_mousePress) {
1018         if (QGesture *tap = event->gesture(Qt::TapGesture)) {
1019             QTapGesture *tapGesture = static_cast<QTapGesture *>(tap);
1020             if (tapGesture->state() == Qt::GestureStarted) {
1021                 tapTriggered(tapGesture, transform);
1022             }
1023         }
1024         return false;
1025     }
1026
1027     bool accepted = false;
1028
1029     if (QGesture *tap = event->gesture(Qt::TapGesture)) {
1030         tapTriggered(static_cast<QTapGesture *>(tap), transform);
1031         accepted = true;
1032     }
1033     if (event->gesture(Qt::TapAndHoldGesture)) {
1034         tapAndHoldTriggered(event, transform);
1035         accepted = true;
1036     }
1037     if (event->gesture(Qt::PinchGesture)) {
1038         pinchTriggered(event, transform);
1039         accepted = true;
1040     }
1041     if (event->gesture(m_swipeGesture)) {
1042         swipeTriggered(event, transform);
1043         accepted = true;
1044     }
1045     if (event->gesture(m_twoFingerTapGesture)) {
1046         twoFingerTapTriggered(event, transform);
1047         accepted = true;
1048     }
1049     return accepted;
1050 }
1051
1052 bool KItemListController::touchBeginEvent(QTouchEvent *event, const QTransform &transform)
1053 {
1054     Q_UNUSED(event)
1055     Q_UNUSED(transform)
1056
1057     m_isTouchEvent = true;
1058     return false;
1059 }
1060
1061 void KItemListController::tapTriggered(QTapGesture *tap, const QTransform &transform)
1062 {
1063     static bool scrollerWasActive = false;
1064
1065     if (tap->state() == Qt::GestureStarted) {
1066         m_dragActionOrRightClick = false;
1067         m_isSwipeGesture = false;
1068         m_pinchGestureInProgress = false;
1069         scrollerWasActive = m_scrollerIsScrolling;
1070     }
1071
1072     if (tap->state() == Qt::GestureFinished) {
1073         m_mousePress = false;
1074
1075         //if at the moment of the gesture start the QScroller was active, the user made the tap
1076         //to stop the QScroller and not to tap on an item
1077         if (scrollerWasActive) {
1078             return;
1079         }
1080
1081         if (m_view->m_tapAndHoldIndicator->isActive()) {
1082             m_view->m_tapAndHoldIndicator->setActive(false);
1083         }
1084
1085         const QPointF pressedMousePos = transform.map(tap->position());
1086         m_pressedIndex = m_view->itemAt(pressedMousePos);
1087         if (m_dragActionOrRightClick) {
1088             m_dragActionOrRightClick = false;
1089         } else {
1090             onPress(m_pressedMouseGlobalPos.toPoint(), tap->position().toPoint(), Qt::NoModifier, Qt::LeftButton);
1091             onRelease(transform.map(tap->position()), Qt::NoModifier, Qt::LeftButton, true);
1092         }
1093         m_isTouchEvent = false;
1094     }
1095 }
1096
1097 void KItemListController::tapAndHoldTriggered(QGestureEvent *event, const QTransform &transform)
1098 {
1099     //the Qt TabAndHold gesture is triggerable with a mouse click, we don't want this
1100     if (!m_isTouchEvent) {
1101         return;
1102     }
1103
1104     const QTapAndHoldGesture *tap = static_cast<QTapAndHoldGesture *>(event->gesture(Qt::TapAndHoldGesture));
1105     if (tap->state() == Qt::GestureFinished) {
1106         //if a pinch gesture is in progress we don't want a TabAndHold gesture
1107         if (m_pinchGestureInProgress) {
1108             return;
1109         }
1110         const QPointF pressedMousePos = transform.map(event->mapToGraphicsScene(tap->position()));
1111         m_pressedIndex = m_view->itemAt(pressedMousePos);
1112         if (m_pressedIndex.has_value()) {
1113             if (!m_selectionManager->isSelected(m_pressedIndex.value())) {
1114                 m_selectionManager->clearSelection();
1115                 m_selectionManager->setSelected(m_pressedIndex.value());
1116             }
1117             if (!m_selectionMode) {
1118                 Q_EMIT selectionModeChangeRequested(true);
1119             }
1120         } else {
1121             m_selectionManager->clearSelection();
1122             startRubberBand();
1123         }
1124
1125         Q_EMIT scrollerStop();
1126
1127         m_view->m_tapAndHoldIndicator->setStartPosition(pressedMousePos);
1128         m_view->m_tapAndHoldIndicator->setActive(true);
1129
1130         m_dragActionOrRightClick = true;
1131     }
1132 }
1133
1134 void KItemListController::pinchTriggered(QGestureEvent *event, const QTransform &transform)
1135 {
1136     Q_UNUSED(transform)
1137
1138     const QPinchGesture *pinch = static_cast<QPinchGesture *>(event->gesture(Qt::PinchGesture));
1139     const qreal sensitivityModifier = 0.2;
1140     static qreal counter = 0;
1141
1142     if (pinch->state() == Qt::GestureStarted) {
1143         m_pinchGestureInProgress = true;
1144         counter = 0;
1145     }
1146     if (pinch->state() == Qt::GestureUpdated) {
1147         //if a swipe gesture was recognized or in progress, we don't want a pinch gesture to change the zoom
1148         if (m_isSwipeGesture) {
1149             return;
1150         }
1151         counter = counter + (pinch->scaleFactor() - 1);
1152         if (counter >= sensitivityModifier) {
1153             Q_EMIT increaseZoom();
1154             counter = 0;
1155         } else if (counter <= -sensitivityModifier) {
1156             Q_EMIT decreaseZoom();
1157             counter = 0;
1158         }
1159     }
1160 }
1161
1162 void KItemListController::swipeTriggered(QGestureEvent *event, const QTransform &transform)
1163 {
1164     Q_UNUSED(transform)
1165
1166     const KTwoFingerSwipe *swipe = static_cast<KTwoFingerSwipe *>(event->gesture(m_swipeGesture));
1167
1168     if (!swipe) {
1169         return;
1170     }
1171     if (swipe->state() == Qt::GestureStarted) {
1172         m_isSwipeGesture = true;
1173     }
1174
1175     if (swipe->state() == Qt::GestureCanceled) {
1176         m_isSwipeGesture = false;
1177     }
1178
1179     if (swipe->state() == Qt::GestureFinished) {
1180         Q_EMIT scrollerStop();
1181
1182         if (swipe->swipeAngle() <= 20 || swipe->swipeAngle() >= 340) {
1183             Q_EMIT mouseButtonPressed(m_pressedIndex.value_or(-1), Qt::BackButton);
1184         } else if (swipe->swipeAngle() <= 200 && swipe->swipeAngle() >= 160) {
1185             Q_EMIT mouseButtonPressed(m_pressedIndex.value_or(-1), Qt::ForwardButton);
1186         } else if (swipe->swipeAngle() <= 110 && swipe->swipeAngle() >= 60) {
1187             Q_EMIT swipeUp();
1188         }
1189         m_isSwipeGesture = true;
1190     }
1191 }
1192
1193 void KItemListController::twoFingerTapTriggered(QGestureEvent *event, const QTransform &transform)
1194 {
1195     const KTwoFingerTap *twoTap = static_cast<KTwoFingerTap *>(event->gesture(m_twoFingerTapGesture));
1196
1197     if (!twoTap) {
1198         return;
1199     }
1200
1201     if (twoTap->state() == Qt::GestureStarted) {
1202         const QPointF pressedMousePos = transform.map(twoTap->pos());
1203         m_pressedIndex = m_view->itemAt(pressedMousePos);
1204         if (m_pressedIndex.has_value()) {
1205             onPress(twoTap->screenPos().toPoint(), twoTap->pos().toPoint(), Qt::ControlModifier, Qt::LeftButton);
1206             onRelease(transform.map(twoTap->pos()), Qt::ControlModifier, Qt::LeftButton, false);
1207         }
1208     }
1209 }
1210
1211 bool KItemListController::processEvent(QEvent *event, const QTransform &transform)
1212 {
1213     if (!event) {
1214         return false;
1215     }
1216
1217     switch (event->type()) {
1218     case QEvent::KeyPress:
1219         return keyPressEvent(static_cast<QKeyEvent *>(event));
1220     case QEvent::InputMethod:
1221         return inputMethodEvent(static_cast<QInputMethodEvent *>(event));
1222     case QEvent::GraphicsSceneMousePress:
1223         return mousePressEvent(static_cast<QGraphicsSceneMouseEvent *>(event), QTransform());
1224     case QEvent::GraphicsSceneMouseMove:
1225         return mouseMoveEvent(static_cast<QGraphicsSceneMouseEvent *>(event), QTransform());
1226     case QEvent::GraphicsSceneMouseRelease:
1227         return mouseReleaseEvent(static_cast<QGraphicsSceneMouseEvent *>(event), QTransform());
1228     case QEvent::GraphicsSceneMouseDoubleClick:
1229         return mouseDoubleClickEvent(static_cast<QGraphicsSceneMouseEvent *>(event), QTransform());
1230     case QEvent::ContextMenu:
1231         return contextMenuEvent(static_cast<QContextMenuEvent *>(event));
1232     case QEvent::GraphicsSceneWheel:
1233         return wheelEvent(static_cast<QGraphicsSceneWheelEvent *>(event), QTransform());
1234     case QEvent::GraphicsSceneDragEnter:
1235         return dragEnterEvent(static_cast<QGraphicsSceneDragDropEvent *>(event), QTransform());
1236     case QEvent::GraphicsSceneDragLeave:
1237         return dragLeaveEvent(static_cast<QGraphicsSceneDragDropEvent *>(event), QTransform());
1238     case QEvent::GraphicsSceneDragMove:
1239         return dragMoveEvent(static_cast<QGraphicsSceneDragDropEvent *>(event), QTransform());
1240     case QEvent::GraphicsSceneDrop:
1241         return dropEvent(static_cast<QGraphicsSceneDragDropEvent *>(event), QTransform());
1242     case QEvent::GraphicsSceneHoverEnter:
1243         return hoverEnterEvent(static_cast<QGraphicsSceneHoverEvent *>(event), QTransform());
1244     case QEvent::GraphicsSceneHoverMove:
1245         return hoverMoveEvent(static_cast<QGraphicsSceneHoverEvent *>(event), QTransform());
1246     case QEvent::GraphicsSceneHoverLeave:
1247         return hoverLeaveEvent(static_cast<QGraphicsSceneHoverEvent *>(event), QTransform());
1248     case QEvent::GraphicsSceneResize:
1249         return resizeEvent(static_cast<QGraphicsSceneResizeEvent *>(event), transform);
1250     case QEvent::Gesture:
1251         return gestureEvent(static_cast<QGestureEvent *>(event), transform);
1252     case QEvent::TouchBegin:
1253         return touchBeginEvent(static_cast<QTouchEvent *>(event), transform);
1254     default:
1255         break;
1256     }
1257
1258     return false;
1259 }
1260
1261 void KItemListController::slotViewScrollOffsetChanged(qreal current, qreal previous)
1262 {
1263     if (!m_view) {
1264         return;
1265     }
1266
1267     KItemListRubberBand *rubberBand = m_view->rubberBand();
1268     if (rubberBand->isActive()) {
1269         const qreal diff = current - previous;
1270         // TODO: Ideally just QCursor::pos() should be used as
1271         // new end-position but it seems there is no easy way
1272         // to have something like QWidget::mapFromGlobal() for QGraphicsWidget
1273         // (... or I just missed an easy way to do the mapping)
1274         QPointF endPos = rubberBand->endPosition();
1275         if (m_view->scrollOrientation() == Qt::Vertical) {
1276             endPos.ry() += diff;
1277         } else {
1278             endPos.rx() += diff;
1279         }
1280
1281         rubberBand->setEndPosition(endPos);
1282     }
1283 }
1284
1285 void KItemListController::slotRubberBandChanged()
1286 {
1287     if (!m_view || !m_model || m_model->count() <= 0) {
1288         return;
1289     }
1290
1291     const KItemListRubberBand *rubberBand = m_view->rubberBand();
1292     const QPointF startPos = rubberBand->startPosition();
1293     const QPointF endPos = rubberBand->endPosition();
1294     QRectF rubberBandRect = QRectF(startPos, endPos).normalized();
1295
1296     const bool scrollVertical = (m_view->scrollOrientation() == Qt::Vertical);
1297     if (scrollVertical) {
1298         rubberBandRect.translate(0, -m_view->scrollOffset());
1299     } else {
1300         rubberBandRect.translate(-m_view->scrollOffset(), 0);
1301     }
1302
1303     if (!m_oldSelection.isEmpty()) {
1304         // Clear the old selection that was available before the rubberband has
1305         // been activated in case if no Shift- or Control-key are pressed
1306         const bool shiftOrControlPressed = QApplication::keyboardModifiers() & Qt::ShiftModifier || QApplication::keyboardModifiers() & Qt::ControlModifier;
1307         if (!shiftOrControlPressed && !m_selectionMode) {
1308             m_oldSelection.clear();
1309         }
1310     }
1311
1312     KItemSet selectedItems;
1313
1314     // Select all visible items that intersect with the rubberband
1315     const auto widgets = m_view->visibleItemListWidgets();
1316     for (const KItemListWidget *widget : widgets) {
1317         const int index = widget->index();
1318
1319         const QRectF widgetRect = m_view->itemRect(index);
1320         if (widgetRect.intersects(rubberBandRect)) {
1321             // Select the full row intersecting with the rubberband rectangle
1322             const QRectF selectionRect = widget->selectionRect().translated(widgetRect.topLeft());
1323             const QRectF iconRect = widget->iconRect().translated(widgetRect.topLeft());
1324             if (selectionRect.intersects(rubberBandRect) || iconRect.intersects(rubberBandRect)) {
1325                 selectedItems.insert(index);
1326             }
1327         }
1328     }
1329
1330     // Select all invisible items that intersect with the rubberband. Instead of
1331     // iterating all items only the area which might be touched by the rubberband
1332     // will be checked.
1333     const bool increaseIndex = scrollVertical ? startPos.y() > endPos.y() : startPos.x() > endPos.x();
1334
1335     int index = increaseIndex ? m_view->lastVisibleIndex() + 1 : m_view->firstVisibleIndex() - 1;
1336     bool selectionFinished = false;
1337     do {
1338         const QRectF widgetRect = m_view->itemRect(index);
1339         if (widgetRect.intersects(rubberBandRect)) {
1340             selectedItems.insert(index);
1341         }
1342
1343         if (increaseIndex) {
1344             ++index;
1345             selectionFinished = (index >= m_model->count()) || (scrollVertical && widgetRect.top() > rubberBandRect.bottom())
1346                 || (!scrollVertical && widgetRect.left() > rubberBandRect.right());
1347         } else {
1348             --index;
1349             selectionFinished = (index < 0) || (scrollVertical && widgetRect.bottom() < rubberBandRect.top())
1350                 || (!scrollVertical && widgetRect.right() < rubberBandRect.left());
1351         }
1352     } while (!selectionFinished);
1353
1354     if ((QApplication::keyboardModifiers() & Qt::ControlModifier) || m_selectionMode) {
1355         // If Control is pressed, the selection state of all items in the rubberband is toggled.
1356         // Therefore, the new selection contains:
1357         // 1. All previously selected items which are not inside the rubberband, and
1358         // 2. all items inside the rubberband which have not been selected previously.
1359         m_selectionManager->setSelectedItems(m_oldSelection ^ selectedItems);
1360     } else {
1361         m_selectionManager->setSelectedItems(selectedItems + m_oldSelection);
1362     }
1363 }
1364
1365 void KItemListController::startDragging()
1366 {
1367     if (!m_view || !m_model) {
1368         return;
1369     }
1370
1371     const KItemSet selectedItems = m_selectionManager->selectedItems();
1372     if (selectedItems.isEmpty()) {
1373         return;
1374     }
1375
1376     QMimeData *data = m_model->createMimeData(selectedItems);
1377     if (!data) {
1378         return;
1379     }
1380     KUrlMimeData::exportUrlsToPortal(data);
1381
1382     // The created drag object will be owned and deleted
1383     // by QApplication::activeWindow().
1384     QDrag *drag = new QDrag(QApplication::activeWindow());
1385     drag->setMimeData(data);
1386
1387     const QPixmap pixmap = m_view->createDragPixmap(selectedItems);
1388     drag->setPixmap(pixmap);
1389
1390     const QPoint hotSpot((pixmap.width() / pixmap.devicePixelRatio()) / 2, 0);
1391     drag->setHotSpot(hotSpot);
1392
1393     drag->exec(Qt::MoveAction | Qt::CopyAction | Qt::LinkAction, Qt::CopyAction);
1394
1395     QAccessibleEvent accessibilityEvent(view(), QAccessible::DragDropStart);
1396     QAccessible::updateAccessibility(&accessibilityEvent);
1397 }
1398
1399 KItemListWidget *KItemListController::hoveredWidget() const
1400 {
1401     Q_ASSERT(m_view);
1402
1403     const auto widgets = m_view->visibleItemListWidgets();
1404     for (KItemListWidget *widget : widgets) {
1405         if (widget->isHovered()) {
1406             return widget;
1407         }
1408     }
1409
1410     return nullptr;
1411 }
1412
1413 KItemListWidget *KItemListController::widgetForPos(const QPointF &pos) const
1414 {
1415     Q_ASSERT(m_view);
1416
1417     if (m_view->headerBoundaries().contains(pos)) {
1418         return nullptr;
1419     }
1420
1421     const auto widgets = m_view->visibleItemListWidgets();
1422     for (KItemListWidget *widget : widgets) {
1423         const QPointF mappedPos = widget->mapFromItem(m_view, pos);
1424         if (widget->contains(mappedPos) || widget->selectionRect().contains(mappedPos)) {
1425             return widget;
1426         }
1427     }
1428
1429     return nullptr;
1430 }
1431
1432 KItemListWidget *KItemListController::widgetForDropPos(const QPointF &pos) const
1433 {
1434     Q_ASSERT(m_view);
1435
1436     if (m_view->headerBoundaries().contains(pos)) {
1437         return nullptr;
1438     }
1439
1440     const auto widgets = m_view->visibleItemListWidgets();
1441     for (KItemListWidget *widget : widgets) {
1442         const QPointF mappedPos = widget->mapFromItem(m_view, pos);
1443         if (widget->contains(mappedPos)) {
1444             return widget;
1445         }
1446     }
1447
1448     return nullptr;
1449 }
1450
1451 void KItemListController::updateKeyboardAnchor()
1452 {
1453     const bool validAnchor =
1454         m_keyboardAnchorIndex >= 0 && m_keyboardAnchorIndex < m_model->count() && keyboardAnchorPos(m_keyboardAnchorIndex) == m_keyboardAnchorPos;
1455     if (!validAnchor) {
1456         const int index = m_selectionManager->currentItem();
1457         m_keyboardAnchorIndex = index;
1458         m_keyboardAnchorPos = keyboardAnchorPos(index);
1459     }
1460 }
1461
1462 int KItemListController::nextRowIndex(int index) const
1463 {
1464     if (m_keyboardAnchorIndex < 0) {
1465         return index;
1466     }
1467
1468     const int maxIndex = m_model->count() - 1;
1469     if (index == maxIndex) {
1470         return index;
1471     }
1472
1473     // Calculate the index of the last column inside the row of the current index
1474     int lastColumnIndex = index;
1475     while (keyboardAnchorPos(lastColumnIndex + 1) > keyboardAnchorPos(lastColumnIndex)) {
1476         ++lastColumnIndex;
1477         if (lastColumnIndex >= maxIndex) {
1478             return index;
1479         }
1480     }
1481
1482     // Based on the last column index go to the next row and calculate the nearest index
1483     // that is below the current index
1484     int nextRowIndex = lastColumnIndex + 1;
1485     int searchIndex = nextRowIndex;
1486     qreal minDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(nextRowIndex));
1487     while (searchIndex < maxIndex && keyboardAnchorPos(searchIndex + 1) > keyboardAnchorPos(searchIndex)) {
1488         ++searchIndex;
1489         const qreal searchDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(searchIndex));
1490         if (searchDiff < minDiff) {
1491             minDiff = searchDiff;
1492             nextRowIndex = searchIndex;
1493         }
1494     }
1495
1496     return nextRowIndex;
1497 }
1498
1499 int KItemListController::previousRowIndex(int index) const
1500 {
1501     if (m_keyboardAnchorIndex < 0 || index == 0) {
1502         return index;
1503     }
1504
1505     // Calculate the index of the first column inside the row of the current index
1506     int firstColumnIndex = index;
1507     while (keyboardAnchorPos(firstColumnIndex - 1) < keyboardAnchorPos(firstColumnIndex)) {
1508         --firstColumnIndex;
1509         if (firstColumnIndex <= 0) {
1510             return index;
1511         }
1512     }
1513
1514     // Based on the first column index go to the previous row and calculate the nearest index
1515     // that is above the current index
1516     int previousRowIndex = firstColumnIndex - 1;
1517     int searchIndex = previousRowIndex;
1518     qreal minDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(previousRowIndex));
1519     while (searchIndex > 0 && keyboardAnchorPos(searchIndex - 1) < keyboardAnchorPos(searchIndex)) {
1520         --searchIndex;
1521         const qreal searchDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(searchIndex));
1522         if (searchDiff < minDiff) {
1523             minDiff = searchDiff;
1524             previousRowIndex = searchIndex;
1525         }
1526     }
1527
1528     return previousRowIndex;
1529 }
1530
1531 qreal KItemListController::keyboardAnchorPos(int index) const
1532 {
1533     const QRectF itemRect = m_view->itemRect(index);
1534     if (!itemRect.isEmpty()) {
1535         return (m_view->scrollOrientation() == Qt::Vertical) ? itemRect.x() : itemRect.y();
1536     }
1537
1538     return 0;
1539 }
1540
1541 void KItemListController::updateExtendedSelectionRegion()
1542 {
1543     if (m_view) {
1544         const bool extend = (m_selectionBehavior != MultiSelection);
1545         KItemListStyleOption option = m_view->styleOption();
1546         if (option.extendedSelectionRegion != extend) {
1547             option.extendedSelectionRegion = extend;
1548             m_view->setStyleOption(option);
1549         }
1550     }
1551 }
1552
1553 bool KItemListController::onPress(const QPoint &screenPos, const QPointF &pos, const Qt::KeyboardModifiers modifiers, const Qt::MouseButtons buttons)
1554 {
1555     Q_EMIT mouseButtonPressed(m_pressedIndex.value_or(-1), buttons);
1556
1557     if (buttons & (Qt::BackButton | Qt::ForwardButton)) {
1558         // Do not select items when clicking the back/forward buttons, see
1559         // https://bugs.kde.org/show_bug.cgi?id=327412.
1560         return true;
1561     }
1562
1563     const QPointF pressedMousePos = m_view->transform().map(pos);
1564
1565     if (m_view->isAboveExpansionToggle(m_pressedIndex.value_or(-1), pressedMousePos)) {
1566         m_selectionManager->endAnchoredSelection();
1567         m_selectionManager->setCurrentItem(m_pressedIndex.value());
1568         m_selectionManager->beginAnchoredSelection(m_pressedIndex.value());
1569         return true;
1570     }
1571
1572     m_selectionTogglePressed = m_view->isAboveSelectionToggle(m_pressedIndex.value_or(-1), pressedMousePos);
1573     if (m_selectionTogglePressed) {
1574         m_selectionManager->setSelected(m_pressedIndex.value(), 1, KItemListSelectionManager::Toggle);
1575         // The previous anchored selection has been finished already in
1576         // KItemListSelectionManager::setSelected(). We can safely change
1577         // the current item and start a new anchored selection now.
1578         m_selectionManager->setCurrentItem(m_pressedIndex.value());
1579         m_selectionManager->beginAnchoredSelection(m_pressedIndex.value());
1580         return true;
1581     }
1582
1583     const bool shiftPressed = modifiers & Qt::ShiftModifier;
1584     const bool controlPressed = (modifiers & Qt::ControlModifier) || m_selectionMode; // Keeping selectionMode similar to pressing control will hopefully
1585                                                                                       // simplify the overall logic and possibilities both for users and devs.
1586     const bool leftClick = buttons & Qt::LeftButton;
1587     const bool rightClick = buttons & Qt::RightButton;
1588
1589     // The previous selection is cleared if either
1590     // 1. The selection mode is SingleSelection, or
1591     // 2. the selection mode is MultiSelection, and *none* of the following conditions are met:
1592     //    a) Shift or Control are pressed.
1593     //    b) The clicked item is selected already. In that case, the user might want to:
1594     //       - start dragging multiple items, or
1595     //       - open the context menu and perform an action for all selected items.
1596     const bool shiftOrControlPressed = shiftPressed || controlPressed;
1597     const bool pressedItemAlreadySelected = m_pressedIndex.has_value() && m_selectionManager->isSelected(m_pressedIndex.value());
1598     const bool clearSelection = m_selectionBehavior == SingleSelection || (!shiftOrControlPressed && !pressedItemAlreadySelected);
1599
1600     // When this method returns false, a rubberBand selection is created using KItemListController::startRubberBand via the caller.
1601     if (clearSelection) {
1602         const int selectedItemsCount = m_selectionManager->selectedItems().count();
1603         m_selectionManager->clearSelection();
1604         // clear and bail when we got an existing multi-selection
1605         if (selectedItemsCount > 1 && m_pressedIndex.has_value()) {
1606             const auto row = m_view->m_visibleItems.value(m_pressedIndex.value());
1607             const auto mappedPos = row->mapFromItem(m_view, pos);
1608             if (pressedItemAlreadySelected || row->iconRect().contains(mappedPos) || row->textRect().contains(mappedPos)) {
1609                 // we are indeed inside the text/icon rect, keep m_pressedIndex what it is
1610                 // and short-circuit for single-click activation (it will then propagate to onRelease and activate the item)
1611                 // or we just keep going for double-click activation
1612                 if (m_view->style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick) || m_singleClickActivationEnforced) {
1613                     if (!pressedItemAlreadySelected) {
1614                         // An unselected item was clicked directly while deselecting multiple other items so we select it.
1615                         m_selectionManager->setSelected(m_pressedIndex.value(), 1, KItemListSelectionManager::Toggle);
1616                         m_selectionManager->setCurrentItem(m_pressedIndex.value());
1617                         m_selectionManager->beginAnchoredSelection(m_pressedIndex.value());
1618                     }
1619                     return true; // event handled, don't create rubber band
1620                 }
1621             } else {
1622                 // we're not inside the text/icon rect, as we've already cleared the selection
1623                 // we can just stop here and make sure handlers down the line (i.e. onRelease) don't activate
1624                 m_pressedIndex.reset();
1625                 // we don't stop event propagation and proceed to create a rubber band and let onRelease
1626                 // decide (based on m_pressedIndex) whether we're in a drag (drag => new rubber band, click => don't select the item)
1627                 return false;
1628             }
1629         }
1630     } else if (pressedItemAlreadySelected && !shiftOrControlPressed && leftClick) {
1631         // The user might want to start dragging multiple items, but if he clicks the item
1632         // in order to trigger it instead, the other selected items must be deselected.
1633         // However, we do not know yet what the user is going to do.
1634         // -> remember that the user pressed an item which had been selected already and
1635         //    clear the selection in mouseReleaseEvent(), unless the items are dragged.
1636         m_clearSelectionIfItemsAreNotDragged = true;
1637
1638         if (m_selectionManager->selectedItems().count() == 1 && m_view->isAboveText(m_pressedIndex.value_or(-1), pressedMousePos)) {
1639             Q_EMIT selectedItemTextPressed(m_pressedIndex.value_or(-1));
1640         }
1641     }
1642
1643     if (!shiftPressed) {
1644         // Finish the anchored selection before the current index is changed
1645         m_selectionManager->endAnchoredSelection();
1646     }
1647
1648     if (rightClick) {
1649         // Stop rubber band from persisting after right-clicks
1650         KItemListRubberBand *rubberBand = m_view->rubberBand();
1651         if (rubberBand->isActive()) {
1652             disconnect(rubberBand, &KItemListRubberBand::endPositionChanged, this, &KItemListController::slotRubberBandChanged);
1653             rubberBand->setActive(false);
1654             m_view->setAutoScroll(false);
1655         }
1656     }
1657
1658     if (m_pressedIndex.has_value()) {
1659         // The hover highlight area of an item is being pressed.
1660         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
1661         const bool hitTargetIsRowEmptyRegion = !row->contains(row->mapFromItem(m_view, pos));
1662         // again, when this method returns false, a rubberBand selection is created as the event is not consumed;
1663         // createRubberBand here tells us whether to return true or false.
1664         bool createRubberBand = (hitTargetIsRowEmptyRegion && m_selectionManager->selectedItems().isEmpty());
1665
1666         if (rightClick && hitTargetIsRowEmptyRegion) {
1667             // We have a right click outside the icon and text rect but within the hover highlight area.
1668             // We don't want items to get selected through this, so we return now.
1669             return true;
1670         }
1671
1672         m_selectionManager->setCurrentItem(m_pressedIndex.value());
1673
1674         switch (m_selectionBehavior) {
1675         case NoSelection:
1676             break;
1677
1678         case SingleSelection:
1679             m_selectionManager->setSelected(m_pressedIndex.value());
1680             break;
1681
1682         case MultiSelection:
1683             if (controlPressed && !shiftPressed && leftClick) {
1684                 // A left mouse button press is happening on an item while control is pressed. This either means a user wants to:
1685                 // - toggle the selection of item(s) or
1686                 // - they want to begin a drag on the item(s) to copy them.
1687                 // We rule out the latter, if the item is not clicked directly and was unselected previously.
1688                 const auto row = m_view->m_visibleItems.value(m_pressedIndex.value());
1689                 const auto mappedPos = row->mapFromItem(m_view, pos);
1690                 if (!row->iconRect().contains(mappedPos) && !row->textRect().contains(mappedPos) && !pressedItemAlreadySelected) {
1691                     createRubberBand = true;
1692                 } else {
1693                     m_selectionManager->setSelected(m_pressedIndex.value(), 1, KItemListSelectionManager::Toggle);
1694                     m_selectionManager->beginAnchoredSelection(m_pressedIndex.value());
1695                     createRubberBand = false; // multi selection, don't propagate any further
1696                     // This will be the start of an item drag-to-copy operation if the user now moves the mouse before releasing the mouse button.
1697                 }
1698             } else if (!shiftPressed || !m_selectionManager->isAnchoredSelectionActive()) {
1699                 // Select the pressed item and start a new anchored selection
1700                 m_selectionManager->setSelected(m_pressedIndex.value(), 1, KItemListSelectionManager::Select);
1701                 m_selectionManager->beginAnchoredSelection(m_pressedIndex.value());
1702             }
1703             break;
1704
1705         default:
1706             Q_ASSERT(false);
1707             break;
1708         }
1709
1710         return !createRubberBand;
1711     }
1712
1713     return false;
1714 }
1715
1716 bool KItemListController::onRelease(const QPointF &pos, const Qt::KeyboardModifiers modifiers, const Qt::MouseButtons buttons, bool touch)
1717 {
1718     const QPointF pressedMousePos = pos;
1719     const bool isAboveSelectionToggle = m_view->isAboveSelectionToggle(m_pressedIndex.value_or(-1), pressedMousePos);
1720     if (isAboveSelectionToggle) {
1721         m_selectionTogglePressed = false;
1722         return true;
1723     }
1724
1725     if (!isAboveSelectionToggle && m_selectionTogglePressed) {
1726         m_selectionManager->setSelected(m_pressedIndex.value_or(-1), 1, KItemListSelectionManager::Toggle);
1727         m_selectionTogglePressed = false;
1728         return true;
1729     }
1730
1731     const bool controlPressed = modifiers & Qt::ControlModifier;
1732     const bool shiftOrControlPressed = modifiers & Qt::ShiftModifier || controlPressed;
1733
1734     const std::optional<int> index = m_view->itemAt(pos);
1735
1736     KItemListRubberBand *rubberBand = m_view->rubberBand();
1737     bool rubberBandRelease = false;
1738     if (rubberBand->isActive()) {
1739         disconnect(rubberBand, &KItemListRubberBand::endPositionChanged, this, &KItemListController::slotRubberBandChanged);
1740         rubberBand->setActive(false);
1741         m_oldSelection.clear();
1742         m_view->setAutoScroll(false);
1743         rubberBandRelease = true;
1744         // We check for actual rubber band drag here: if delta between start and end is less than drag threshold,
1745         // then we have a single click on one of the rows
1746         if ((rubberBand->endPosition() - rubberBand->startPosition()).manhattanLength() < QApplication::startDragDistance()) {
1747             rubberBandRelease = false; // since we're only selecting, unmark rubber band release flag
1748             // m_pressedIndex will have no value if we came from a multi-selection clearing onPress
1749             // in that case, we don't select anything
1750             if (index.has_value() && m_pressedIndex.has_value()) {
1751                 if (controlPressed && m_selectionBehavior == MultiSelection) {
1752                     m_selectionManager->setSelected(m_pressedIndex.value(), 1, KItemListSelectionManager::Toggle);
1753                 } else {
1754                     m_selectionManager->setSelected(index.value());
1755                 }
1756                 if (!m_selectionManager->isAnchoredSelectionActive()) {
1757                     m_selectionManager->beginAnchoredSelection(index.value());
1758                 }
1759             }
1760         }
1761     }
1762
1763     if (index.has_value() && index == m_pressedIndex) {
1764         // The release event is done above the same item as the press event
1765
1766         if (m_clearSelectionIfItemsAreNotDragged) {
1767             // A selected item has been clicked, but no drag operation has been started
1768             // -> clear the rest of the selection.
1769             m_selectionManager->clearSelection();
1770             m_selectionManager->setSelected(m_pressedIndex.value(), 1, KItemListSelectionManager::Select);
1771             m_selectionManager->beginAnchoredSelection(m_pressedIndex.value());
1772         }
1773
1774         if (buttons & Qt::LeftButton) {
1775             bool emitItemActivated = true;
1776             if (m_view->isAboveExpansionToggle(index.value(), pos)) {
1777                 const bool expanded = m_model->isExpanded(index.value());
1778                 m_model->setExpanded(index.value(), !expanded);
1779
1780                 Q_EMIT itemExpansionToggleClicked(index.value());
1781                 emitItemActivated = false;
1782             } else if (shiftOrControlPressed && m_selectionBehavior != SingleSelection) {
1783                 // The mouse click should only update the selection, not trigger the item, except when
1784                 // we are in single selection mode
1785                 emitItemActivated = false;
1786             } else {
1787                 const bool singleClickActivation = m_view->style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick) || m_singleClickActivationEnforced;
1788                 if (!singleClickActivation) {
1789                     emitItemActivated = touch && !m_selectionMode;
1790                 } else {
1791                     // activate on single click only if we didn't come from a rubber band release
1792                     emitItemActivated = !rubberBandRelease;
1793                 }
1794             }
1795             if (emitItemActivated) {
1796                 Q_EMIT itemActivated(index.value());
1797             }
1798         } else if (buttons & Qt::MiddleButton) {
1799             Q_EMIT itemMiddleClicked(index.value());
1800         }
1801     }
1802
1803     m_pressedMouseGlobalPos = QPointF();
1804     m_pressedIndex = std::nullopt;
1805     m_clearSelectionIfItemsAreNotDragged = false;
1806     return false;
1807 }
1808
1809 void KItemListController::startRubberBand()
1810 {
1811     if (m_selectionBehavior == MultiSelection) {
1812         QPoint startPos = m_view->transform().map(m_view->scene()->views().first()->mapFromGlobal(m_pressedMouseGlobalPos.toPoint()));
1813         if (m_view->scrollOrientation() == Qt::Vertical) {
1814             startPos.ry() += m_view->scrollOffset();
1815         } else {
1816             startPos.rx() += m_view->scrollOffset();
1817         }
1818
1819         m_oldSelection = m_selectionManager->selectedItems();
1820         KItemListRubberBand *rubberBand = m_view->rubberBand();
1821         rubberBand->setStartPosition(startPos);
1822         rubberBand->setEndPosition(startPos);
1823         rubberBand->setActive(true);
1824         connect(rubberBand, &KItemListRubberBand::endPositionChanged, this, &KItemListController::slotRubberBandChanged);
1825         m_view->setAutoScroll(true);
1826     }
1827 }
1828
1829 void KItemListController::slotStateChanged(QScroller::State newState)
1830 {
1831     if (newState == QScroller::Scrolling) {
1832         m_scrollerIsScrolling = true;
1833     } else if (newState == QScroller::Inactive) {
1834         m_scrollerIsScrolling = false;
1835     }
1836 }
1837
1838 #include "moc_kitemlistcontroller.cpp"