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