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