src/kitemviews/kitemlistcontroller.cpp

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