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
  44 KItemListController::KItemListController(KItemModelBase* model, KItemListView* view, QObject* parent) :
  45     QObject(parent),
  46     m_singleClickActivation(KGlobalSettings::singleClick()),
  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, SIGNAL(changeCurrentItem(QString,bool)),
  64             this, SLOT(slotChangeCurrentItem(QString,bool)));
  65     connect(m_selectionManager, SIGNAL(currentChanged(int,int)),
  66             m_keyboardManager, SLOT(slotCurrentChanged(int,int)));
  67
  68     m_autoActivationTimer = new QTimer(this);
  69     m_autoActivationTimer->setSingleShot(true);
  70     m_autoActivationTimer->setInterval(-1);
  71     connect(m_autoActivationTimer, SIGNAL(timeout()), this, SLOT(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, SIGNAL(scrollOffsetChanged(qreal,qreal)), this, SLOT(slotViewScrollOffsetChanged(qreal,qreal)));
 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, SIGNAL(scrollOffsetChanged(qreal,qreal)), this, SLOT(slotViewScrollOffsetChanged(qreal,qreal)));
 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::setSingleClickActivation(bool singleClick)
 193 {
 194     m_singleClickActivation = singleClick;
 195 }
 196
 197 bool KItemListController::singleClickActivation() const
 198 {
 199     return m_singleClickActivation;
 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 QSet<int> selectedItems = m_selectionManager->selectedItems();
 367         if (selectedItems.count() >= 2) {
 368             emit itemsActivated(selectedItems);
 369         } else if (selectedItems.count() == 1) {
 370             emit itemActivated(selectedItems.toList().first());
 371         } else {
 372             emit itemActivated(index);
 373         }
 374         break;
 375     }
 376
 377     case Qt::Key_Space:
 378         if (m_selectionBehavior == MultiSelection) {
 379             if (controlPressed) {
 380                 m_selectionManager->endAnchoredSelection();
 381                 m_selectionManager->setSelected(index, 1, KItemListSelectionManager::Toggle);
 382                 m_selectionManager->beginAnchoredSelection(index);
 383             } else {
 384                 const int current = m_selectionManager->currentItem();
 385                 m_selectionManager->setSelected(current);
 386             }
 387         }
 388         break;
 389
 390     case Qt::Key_Menu: {
 391         // Emit the signal itemContextMenuRequested() in case if at least one
 392         // item is selected. Otherwise the signal viewContextMenuRequested() will be emitted.
 393         const QSet<int> selectedItems = m_selectionManager->selectedItems();
 394         int index = -1;
 395         if (selectedItems.count() >= 2) {
 396             const int currentItemIndex = m_selectionManager->currentItem();
 397             index = selectedItems.contains(currentItemIndex)
 398                     ? currentItemIndex : selectedItems.toList().first();
 399         } else if (selectedItems.count() == 1) {
 400             index = selectedItems.toList().first();
 401         }
 402
 403         if (index >= 0) {
 404             const QRectF contextRect = m_view->itemContextRect(index);
 405             const QPointF pos(m_view->scene()->views().first()->mapToGlobal(contextRect.bottomRight().toPoint()));
 406             emit itemContextMenuRequested(index, pos);
 407         } else {
 408             emit viewContextMenuRequested(QCursor::pos());
 409         }
 410         break;
 411     }
 412
 413     case Qt::Key_Escape:
 414         if (m_selectionBehavior != SingleSelection) {
 415             m_selectionManager->clearSelection();
 416         }
 417         m_keyboardManager->cancelSearch();
 418         break;
 419
 420     default:
 421         m_keyboardManager->addKeys(event->text());
 422         // Make sure unconsumed events get propagated up the chain. #302329
 423         event->ignore();
 424         return false;
 425     }
 426
 427     if (m_selectionManager->currentItem() != index) {
 428         switch (m_selectionBehavior) {
 429         case NoSelection:
 430             m_selectionManager->setCurrentItem(index);
 431             break;
 432
 433         case SingleSelection:
 434             m_selectionManager->setCurrentItem(index);
 435             m_selectionManager->clearSelection();
 436             m_selectionManager->setSelected(index, 1);
 437             break;
 438
 439         case MultiSelection:
 440             if (controlPressed) {
 441                 m_selectionManager->endAnchoredSelection();
 442             }
 443
 444             m_selectionManager->setCurrentItem(index);
 445
 446             if (!shiftOrControlPressed) {
 447                 m_selectionManager->clearSelection();
 448                 m_selectionManager->setSelected(index, 1);
 449             }
 450
 451             if (!shiftPressed) {
 452                 m_selectionManager->beginAnchoredSelection(index);
 453             }
 454             break;
 455         }
 456
 457         m_view->scrollToItem(index);
 458     }
 459     return true;
 460 }
 461
 462 void KItemListController::slotChangeCurrentItem(const QString& text, bool searchFromNextItem)
 463 {
 464     if (!m_model || m_model->count() == 0) {
 465         return;
 466     }
 467     const int currentIndex = m_selectionManager->currentItem();
 468     int index;
 469     if (searchFromNextItem) {
 470         index = m_model->indexForKeyboardSearch(text, (currentIndex + 1) % m_model->count());
 471     } else {
 472         index = m_model->indexForKeyboardSearch(text, currentIndex);
 473     }
 474     if (index >= 0) {
 475         m_selectionManager->setCurrentItem(index);
 476         m_selectionManager->clearSelection();
 477         m_selectionManager->setSelected(index, 1);
 478         m_selectionManager->beginAnchoredSelection(index);
 479         m_view->scrollToItem(index);
 480     }
 481 }
 482
 483 void KItemListController::slotAutoActivationTimeout()
 484 {
 485     if (!m_model || !m_view) {
 486         return;
 487     }
 488
 489     const int index = m_autoActivationTimer->property("index").toInt();
 490     if (index < 0 || index >= m_model->count()) {
 491         return;
 492     }
 493
 494     /* m_view->isUnderMouse() fixes a bug in the Folder-View-Panel and in the
 495      * Places-Panel.
 496      *
 497      * Bug: When you drag a file onto a Folder-View-Item or a Places-Item and
 498      * then move away before the auto-activation timeout triggers, than the
 499      * item still becomes activated/expanded.
 500      *
 501      * See Bug 293200 and 305783
 502      */
 503     if (m_model->supportsDropping(index) && m_view->isUnderMouse()) {
 504         if (m_view->supportsItemExpanding() && m_model->isExpandable(index)) {
 505             const bool expanded = m_model->isExpanded(index);
 506             m_model->setExpanded(index, !expanded);
 507         } else if (m_autoActivationBehavior != ExpansionOnly) {
 508             emit itemActivated(index);
 509         }
 510     }
 511 }
 512
 513 bool KItemListController::inputMethodEvent(QInputMethodEvent* event)
 514 {
 515     Q_UNUSED(event);
 516     return false;
 517 }
 518
 519 bool KItemListController::mousePressEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 520 {
 521     if (!m_view) {
 522         return false;
 523     }
 524
 525     m_pressedMousePos = transform.map(event->pos());
 526     m_pressedIndex = m_view->itemAt(m_pressedMousePos);
 527     emit mouseButtonPressed(m_pressedIndex, event->buttons());
 528
 529     if (m_view->isAboveExpansionToggle(m_pressedIndex, m_pressedMousePos)) {
 530         m_selectionManager->endAnchoredSelection();
 531         m_selectionManager->setCurrentItem(m_pressedIndex);
 532         m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 533         return true;
 534     }
 535
 536     m_selectionTogglePressed = m_view->isAboveSelectionToggle(m_pressedIndex, m_pressedMousePos);
 537     if (m_selectionTogglePressed) {
 538         m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
 539         // The previous anchored selection has been finished already in
 540         // KItemListSelectionManager::setSelected(). We can safely change
 541         // the current item and start a new anchored selection now.
 542         m_selectionManager->setCurrentItem(m_pressedIndex);
 543         m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 544         return true;
 545     }
 546
 547     const bool shiftPressed = event->modifiers() & Qt::ShiftModifier;
 548     const bool controlPressed = event->modifiers() & Qt::ControlModifier;
 549
 550     // The previous selection is cleared if either
 551     // 1. The selection mode is SingleSelection, or
 552     // 2. the selection mode is MultiSelection, and *none* of the following conditions are met:
 553     //    a) Shift or Control are pressed.
 554     //    b) The clicked item is selected already. In that case, the user might want to:
 555     //       - start dragging multiple items, or
 556     //       - open the context menu and perform an action for all selected items.
 557     const bool shiftOrControlPressed = shiftPressed || controlPressed;
 558     const bool pressedItemAlreadySelected = m_pressedIndex >= 0 && m_selectionManager->isSelected(m_pressedIndex);
 559     const bool clearSelection = m_selectionBehavior == SingleSelection ||
 560                                 (!shiftOrControlPressed && !pressedItemAlreadySelected);
 561     if (clearSelection) {
 562         m_selectionManager->clearSelection();
 563     } else if (pressedItemAlreadySelected && !shiftOrControlPressed && (event->buttons() & Qt::LeftButton)) {
 564         // The user might want to start dragging multiple items, but if he clicks the item
 565         // in order to trigger it instead, the other selected items must be deselected.
 566         // However, we do not know yet what the user is going to do.
 567         // -> remember that the user pressed an item which had been selected already and
 568         //    clear the selection in mouseReleaseEvent(), unless the items are dragged.
 569         m_clearSelectionIfItemsAreNotDragged = true;
 570     }
 571
 572     if (!shiftPressed) {
 573         // Finish the anchored selection before the current index is changed
 574         m_selectionManager->endAnchoredSelection();
 575     }
 576
 577     if (m_pressedIndex >= 0) {
 578         m_selectionManager->setCurrentItem(m_pressedIndex);
 579
 580         switch (m_selectionBehavior) {
 581         case NoSelection:
 582             break;
 583
 584         case SingleSelection:
 585             m_selectionManager->setSelected(m_pressedIndex);
 586             break;
 587
 588         case MultiSelection:
 589             if (controlPressed && !shiftPressed) {
 590                 m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
 591                 m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 592             } else if (!shiftPressed || !m_selectionManager->isAnchoredSelectionActive()) {
 593                 // Select the pressed item and start a new anchored selection
 594                 m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Select);
 595                 m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 596             }
 597             break;
 598
 599         default:
 600             Q_ASSERT(false);
 601             break;
 602         }
 603
 604         if (event->buttons() & Qt::RightButton) {
 605             emit itemContextMenuRequested(m_pressedIndex, event->screenPos());
 606         }
 607
 608         return true;
 609     }
 610
 611     if (event->buttons() & Qt::RightButton) {
 612         const QRectF headerBounds = m_view->headerBoundaries();
 613         if (headerBounds.contains(event->pos())) {
 614             emit headerContextMenuRequested(event->screenPos());
 615         } else {
 616             emit viewContextMenuRequested(event->screenPos());
 617         }
 618         return true;
 619     }
 620
 621     if (m_selectionBehavior == MultiSelection) {
 622         QPointF startPos = m_pressedMousePos;
 623         if (m_view->scrollOrientation() == Qt::Vertical) {
 624             startPos.ry() += m_view->scrollOffset();
 625             if (m_view->itemSize().width() < 0) {
 626                 // Use a special rubberband for views that have only one column and
 627                 // expand the rubberband to use the whole width of the view.
 628                 startPos.setX(0);
 629             }
 630         } else {
 631             startPos.rx() += m_view->scrollOffset();
 632         }
 633
 634         m_oldSelection = m_selectionManager->selectedItems();
 635         KItemListRubberBand* rubberBand = m_view->rubberBand();
 636         rubberBand->setStartPosition(startPos);
 637         rubberBand->setEndPosition(startPos);
 638         rubberBand->setActive(true);
 639         connect(rubberBand, SIGNAL(endPositionChanged(QPointF,QPointF)), this, SLOT(slotRubberBandChanged()));
 640         m_view->setAutoScroll(true);
 641     }
 642
 643     return false;
 644 }
 645
 646 bool KItemListController::mouseMoveEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 647 {
 648     if (!m_view) {
 649         return false;
 650     }
 651
 652     if (m_pressedIndex >= 0) {
 653         // Check whether a dragging should be started
 654         if (event->buttons() & Qt::LeftButton) {
 655             const QPointF pos = transform.map(event->pos());
 656             if ((pos - m_pressedMousePos).manhattanLength() >= QApplication::startDragDistance()) {
 657                 if (!m_selectionManager->isSelected(m_pressedIndex)) {
 658                     // Always assure that the dragged item gets selected. Usually this is already
 659                     // done on the mouse-press event, but when using the selection-toggle on a
 660                     // selected item the dragged item is not selected yet.
 661                     m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
 662                 } else {
 663                     // A selected item has been clicked to drag all selected items
 664                     // -> the selection should not be cleared when the mouse button is released.
 665                     m_clearSelectionIfItemsAreNotDragged = false;
 666                 }
 667
 668                 startDragging();
 669             }
 670         }
 671     } else {
 672         KItemListRubberBand* rubberBand = m_view->rubberBand();
 673         if (rubberBand->isActive()) {
 674             QPointF endPos = transform.map(event->pos());
 675
 676             // Update the current item.
 677             const int newCurrent = m_view->itemAt(endPos);
 678             if (newCurrent >= 0) {
 679                 // It's expected that the new current index is also the new anchor (bug 163451).
 680                 m_selectionManager->endAnchoredSelection();
 681                 m_selectionManager->setCurrentItem(newCurrent);
 682                 m_selectionManager->beginAnchoredSelection(newCurrent);
 683             }
 684
 685             if (m_view->scrollOrientation() == Qt::Vertical) {
 686                 endPos.ry() += m_view->scrollOffset();
 687                 if (m_view->itemSize().width() < 0) {
 688                     // Use a special rubberband for views that have only one column and
 689                     // expand the rubberband to use the whole width of the view.
 690                     endPos.setX(m_view->size().width());
 691                 }
 692             } else {
 693                 endPos.rx() += m_view->scrollOffset();
 694             }
 695             rubberBand->setEndPosition(endPos);
 696         }
 697     }
 698
 699     return false;
 700 }
 701
 702 bool KItemListController::mouseReleaseEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 703 {
 704     if (!m_view) {
 705         return false;
 706     }
 707
 708     emit mouseButtonReleased(m_pressedIndex, event->buttons());
 709
 710     const bool isAboveSelectionToggle = m_view->isAboveSelectionToggle(m_pressedIndex, m_pressedMousePos);
 711     if (isAboveSelectionToggle) {
 712         m_selectionTogglePressed = false;
 713         return true;
 714     }
 715
 716     if (!isAboveSelectionToggle && m_selectionTogglePressed) {
 717         m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
 718         m_selectionTogglePressed = false;
 719         return true;
 720     }
 721
 722     const bool shiftOrControlPressed = event->modifiers() & Qt::ShiftModifier ||
 723                                        event->modifiers() & Qt::ControlModifier;
 724
 725     KItemListRubberBand* rubberBand = m_view->rubberBand();
 726     if (rubberBand->isActive()) {
 727         disconnect(rubberBand, SIGNAL(endPositionChanged(QPointF,QPointF)), this, SLOT(slotRubberBandChanged()));
 728         rubberBand->setActive(false);
 729         m_oldSelection.clear();
 730         m_view->setAutoScroll(false);
 731     }
 732
 733     const QPointF pos = transform.map(event->pos());
 734     const int index = m_view->itemAt(pos);
 735
 736     if (index >= 0 && index == m_pressedIndex) {
 737         // The release event is done above the same item as the press event
 738
 739         if (m_clearSelectionIfItemsAreNotDragged) {
 740             // A selected item has been clicked, but no drag operation has been started
 741             // -> clear the rest of the selection.
 742             m_selectionManager->clearSelection();
 743             m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Select);
 744             m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 745         }
 746
 747         if (event->button() & Qt::LeftButton) {
 748             bool emitItemActivated = true;
 749             if (m_view->isAboveExpansionToggle(index, pos)) {
 750                 const bool expanded = m_model->isExpanded(index);
 751                 m_model->setExpanded(index, !expanded);
 752
 753                 emit itemExpansionToggleClicked(index);
 754                 emitItemActivated = false;
 755             } else if (shiftOrControlPressed) {
 756                 // The mouse click should only update the selection, not trigger the item
 757                 emitItemActivated = false;
 758             } else if (!m_singleClickActivation) {
 759                 emitItemActivated = false;
 760             }
 761             if (emitItemActivated) {
 762                 emit itemActivated(index);
 763             }
 764         } else if (event->button() & Qt::MidButton) {
 765             emit itemMiddleClicked(index);
 766         }
 767     }
 768
 769     m_pressedMousePos = QPointF();
 770     m_pressedIndex = -1;
 771     m_clearSelectionIfItemsAreNotDragged = false;
 772     return false;
 773 }
 774
 775 bool KItemListController::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 776 {
 777     const QPointF pos = transform.map(event->pos());
 778     const int index = m_view->itemAt(pos);
 779
 780     // Expand item if desired - See Bug 295573
 781     if (m_mouseDoubleClickAction != ActivateItemOnly) {
 782         if (m_view && m_model && m_view->supportsItemExpanding() && m_model->isExpandable(index)) {
 783             const bool expanded = m_model->isExpanded(index);
 784             m_model->setExpanded(index, !expanded);
 785         }
 786     }
 787
 788     bool emitItemActivated = !m_singleClickActivation &&
 789                              (event->button() & Qt::LeftButton) &&
 790                              index >= 0 && index < m_model->count();
 791     if (emitItemActivated) {
 792         emit itemActivated(index);
 793     }
 794     return false;
 795 }
 796
 797 bool KItemListController::dragEnterEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 798 {
 799     Q_UNUSED(event);
 800     Q_UNUSED(transform);
 801     return false;
 802 }
 803
 804 bool KItemListController::dragLeaveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 805 {
 806     Q_UNUSED(event);
 807     Q_UNUSED(transform);
 808
 809     m_view->setAutoScroll(false);
 810     m_view->hideDropIndicator();
 811
 812     KItemListWidget* widget = hoveredWidget();
 813     if (widget) {
 814         widget->setHovered(false);
 815         emit itemUnhovered(widget->index());
 816     }
 817     return false;
 818 }
 819
 820 bool KItemListController::dragMoveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 821 {
 822     if (!m_model || !m_view) {
 823         return false;
 824     }
 825
 826     event->acceptProposedAction();
 827
 828     KItemListWidget* oldHoveredWidget = hoveredWidget();
 829
 830     const QPointF pos = transform.map(event->pos());
 831     KItemListWidget* newHoveredWidget = widgetForPos(pos);
 832
 833     if (oldHoveredWidget != newHoveredWidget) {
 834         m_autoActivationTimer->stop();
 835
 836         if (oldHoveredWidget) {
 837             oldHoveredWidget->setHovered(false);
 838             emit itemUnhovered(oldHoveredWidget->index());
 839         }
 840
 841         if (newHoveredWidget) {
 842             bool droppingBetweenItems = false;
 843             if (m_model->sortRole().isEmpty()) {
 844                 // The model supports inserting items between other items.
 845                 droppingBetweenItems = (m_view->showDropIndicator(pos) >= 0);
 846             }
 847
 848             const int index = newHoveredWidget->index();
 849             if (!droppingBetweenItems && m_model->supportsDropping(index)) {
 850                 // Something has been dragged on an item.
 851                 m_view->hideDropIndicator();
 852                 newHoveredWidget->setHovered(true);
 853                 emit itemHovered(index);
 854
 855                 if (m_autoActivationTimer->interval() >= 0) {
 856                     m_autoActivationTimer->setProperty("index", index);
 857                     m_autoActivationTimer->start();
 858                 }
 859             }
 860         }
 861     }
 862
 863     return false;
 864 }
 865
 866 bool KItemListController::dropEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 867 {
 868     if (!m_view) {
 869         return false;
 870     }
 871
 872     m_autoActivationTimer->stop();
 873     m_view->setAutoScroll(false);
 874
 875     const QPointF pos = transform.map(event->pos());
 876
 877     int dropAboveIndex = -1;
 878     if (m_model->sortRole().isEmpty()) {
 879         // The model supports inserting of items between other items.
 880         dropAboveIndex = m_view->showDropIndicator(pos);
 881     }
 882
 883     if (dropAboveIndex >= 0) {
 884         // Something has been dropped between two items.
 885         m_view->hideDropIndicator();
 886         emit aboveItemDropEvent(dropAboveIndex, event);
 887     } else {
 888         // Something has been dropped on an item or on an empty part of the view.
 889         emit itemDropEvent(m_view->itemAt(pos), event);
 890     }
 891
 892     return true;
 893 }
 894
 895 bool KItemListController::hoverEnterEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 896 {
 897     Q_UNUSED(event);
 898     Q_UNUSED(transform);
 899     return false;
 900 }
 901
 902 bool KItemListController::hoverMoveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 903 {
 904     Q_UNUSED(transform);
 905     if (!m_model || !m_view) {
 906         return false;
 907     }
 908
 909     KItemListWidget* oldHoveredWidget = hoveredWidget();
 910     const QPointF pos = transform.map(event->pos());
 911     KItemListWidget* newHoveredWidget = widgetForPos(pos);
 912
 913     if (oldHoveredWidget != newHoveredWidget) {
 914         if (oldHoveredWidget) {
 915             oldHoveredWidget->setHovered(false);
 916             emit itemUnhovered(oldHoveredWidget->index());
 917         }
 918
 919         if (newHoveredWidget) {
 920             newHoveredWidget->setHovered(true);
 921             emit itemHovered(newHoveredWidget->index());
 922         }
 923     }
 924
 925     return false;
 926 }
 927
 928 bool KItemListController::hoverLeaveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 929 {
 930     Q_UNUSED(event);
 931     Q_UNUSED(transform);
 932
 933     if (!m_model || !m_view) {
 934         return false;
 935     }
 936
 937     foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
 938         if (widget->isHovered()) {
 939             widget->setHovered(false);
 940             emit itemUnhovered(widget->index());
 941         }
 942     }
 943     return false;
 944 }
 945
 946 bool KItemListController::wheelEvent(QGraphicsSceneWheelEvent* event, const QTransform& transform)
 947 {
 948     Q_UNUSED(event);
 949     Q_UNUSED(transform);
 950     return false;
 951 }
 952
 953 bool KItemListController::resizeEvent(QGraphicsSceneResizeEvent* event, const QTransform& transform)
 954 {
 955     Q_UNUSED(event);
 956     Q_UNUSED(transform);
 957     return false;
 958 }
 959
 960 bool KItemListController::processEvent(QEvent* event, const QTransform& transform)
 961 {
 962     if (!event) {
 963         return false;
 964     }
 965
 966     switch (event->type()) {
 967     case QEvent::KeyPress:
 968         return keyPressEvent(static_cast<QKeyEvent*>(event));
 969     case QEvent::InputMethod:
 970         return inputMethodEvent(static_cast<QInputMethodEvent*>(event));
 971     case QEvent::GraphicsSceneMousePress:
 972         return mousePressEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
 973     case QEvent::GraphicsSceneMouseMove:
 974         return mouseMoveEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
 975     case QEvent::GraphicsSceneMouseRelease:
 976         return mouseReleaseEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
 977     case QEvent::GraphicsSceneMouseDoubleClick:
 978         return mouseDoubleClickEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
 979     case QEvent::GraphicsSceneWheel:
 980          return wheelEvent(static_cast<QGraphicsSceneWheelEvent*>(event), QTransform());
 981     case QEvent::GraphicsSceneDragEnter:
 982         return dragEnterEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
 983     case QEvent::GraphicsSceneDragLeave:
 984         return dragLeaveEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
 985     case QEvent::GraphicsSceneDragMove:
 986         return dragMoveEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
 987     case QEvent::GraphicsSceneDrop:
 988         return dropEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
 989     case QEvent::GraphicsSceneHoverEnter:
 990         return hoverEnterEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
 991     case QEvent::GraphicsSceneHoverMove:
 992         return hoverMoveEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
 993     case QEvent::GraphicsSceneHoverLeave:
 994         return hoverLeaveEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
 995     case QEvent::GraphicsSceneResize:
 996         return resizeEvent(static_cast<QGraphicsSceneResizeEvent*>(event), transform);
 997     default:
 998         break;
 999     }
1000
1001     return false;
1002 }
1003
1004 void KItemListController::slotViewScrollOffsetChanged(qreal current, qreal previous)
1005 {
1006     if (!m_view) {
1007         return;
1008     }
1009
1010     KItemListRubberBand* rubberBand = m_view->rubberBand();
1011     if (rubberBand->isActive()) {
1012         const qreal diff = current - previous;
1013         // TODO: Ideally just QCursor::pos() should be used as
1014         // new end-position but it seems there is no easy way
1015         // to have something like QWidget::mapFromGlobal() for QGraphicsWidget
1016         // (... or I just missed an easy way to do the mapping)
1017         QPointF endPos = rubberBand->endPosition();
1018         if (m_view->scrollOrientation() == Qt::Vertical) {
1019             endPos.ry() += diff;
1020         } else {
1021             endPos.rx() += diff;
1022         }
1023
1024         rubberBand->setEndPosition(endPos);
1025     }
1026 }
1027
1028 void KItemListController::slotRubberBandChanged()
1029 {
1030     if (!m_view || !m_model || m_model->count() <= 0) {
1031         return;
1032     }
1033
1034     const KItemListRubberBand* rubberBand = m_view->rubberBand();
1035     const QPointF startPos = rubberBand->startPosition();
1036     const QPointF endPos = rubberBand->endPosition();
1037     QRectF rubberBandRect = QRectF(startPos, endPos).normalized();
1038
1039     const bool scrollVertical = (m_view->scrollOrientation() == Qt::Vertical);
1040     if (scrollVertical) {
1041         rubberBandRect.translate(0, -m_view->scrollOffset());
1042     } else {
1043         rubberBandRect.translate(-m_view->scrollOffset(), 0);
1044     }
1045
1046     if (!m_oldSelection.isEmpty()) {
1047         // Clear the old selection that was available before the rubberband has
1048         // been activated in case if no Shift- or Control-key are pressed
1049         const bool shiftOrControlPressed = QApplication::keyboardModifiers() & Qt::ShiftModifier ||
1050                                            QApplication::keyboardModifiers() & Qt::ControlModifier;
1051         if (!shiftOrControlPressed) {
1052             m_oldSelection.clear();
1053         }
1054     }
1055
1056     QSet<int> selectedItems;
1057
1058     // Select all visible items that intersect with the rubberband
1059     foreach (const KItemListWidget* widget, m_view->visibleItemListWidgets()) {
1060         const int index = widget->index();
1061
1062         const QRectF widgetRect = m_view->itemRect(index);
1063         if (widgetRect.intersects(rubberBandRect)) {
1064             const QRectF iconRect = widget->iconRect().translated(widgetRect.topLeft());
1065             const QRectF textRect = widget->textRect().translated(widgetRect.topLeft());
1066             if (iconRect.intersects(rubberBandRect) || textRect.intersects(rubberBandRect)) {
1067                 selectedItems.insert(index);
1068             }
1069         }
1070     }
1071
1072     // Select all invisible items that intersect with the rubberband. Instead of
1073     // iterating all items only the area which might be touched by the rubberband
1074     // will be checked.
1075     const bool increaseIndex = scrollVertical ?
1076                                startPos.y() > endPos.y(): startPos.x() > endPos.x();
1077
1078     int index = increaseIndex ? m_view->lastVisibleIndex() + 1 : m_view->firstVisibleIndex() - 1;
1079     bool selectionFinished = false;
1080     do {
1081         const QRectF widgetRect = m_view->itemRect(index);
1082         if (widgetRect.intersects(rubberBandRect)) {
1083             selectedItems.insert(index);
1084         }
1085
1086         if (increaseIndex) {
1087             ++index;
1088             selectionFinished = (index >= m_model->count()) ||
1089                                 ( scrollVertical && widgetRect.top()  > rubberBandRect.bottom()) ||
1090                                 (!scrollVertical && widgetRect.left() > rubberBandRect.right());
1091         } else {
1092             --index;
1093             selectionFinished = (index < 0) ||
1094                                 ( scrollVertical && widgetRect.bottom() < rubberBandRect.top()) ||
1095                                 (!scrollVertical && widgetRect.right()  < rubberBandRect.left());
1096         }
1097     } while (!selectionFinished);
1098
1099     if (QApplication::keyboardModifiers() & Qt::ControlModifier) {
1100         // If Control is pressed, the selection state of all items in the rubberband is toggled.
1101         // Therefore, the new selection contains:
1102         // 1. All previously selected items which are not inside the rubberband, and
1103         // 2. all items inside the rubberband which have not been selected previously.
1104         m_selectionManager->setSelectedItems((m_oldSelection - selectedItems) + (selectedItems - m_oldSelection));
1105     }
1106     else {
1107         m_selectionManager->setSelectedItems(selectedItems + m_oldSelection);
1108     }
1109 }
1110
1111 void KItemListController::startDragging()
1112 {
1113     if (!m_view || !m_model) {
1114         return;
1115     }
1116
1117     const QSet<int> selectedItems = m_selectionManager->selectedItems();
1118     if (selectedItems.isEmpty()) {
1119         return;
1120     }
1121
1122     QMimeData* data = m_model->createMimeData(selectedItems);
1123     if (!data) {
1124         return;
1125     }
1126
1127     // The created drag object will be owned and deleted
1128     // by QApplication::activeWindow().
1129     QDrag* drag = new QDrag(QApplication::activeWindow());
1130     drag->setMimeData(data);
1131
1132     const QPixmap pixmap = m_view->createDragPixmap(selectedItems);
1133     drag->setPixmap(pixmap);
1134
1135     const QPoint hotSpot(pixmap.width() / 2, 0);
1136     drag->setHotSpot(hotSpot);
1137
1138     drag->exec(Qt::MoveAction | Qt::CopyAction | Qt::LinkAction, Qt::CopyAction);
1139 }
1140
1141 KItemListWidget* KItemListController::hoveredWidget() const
1142 {
1143     Q_ASSERT(m_view);
1144
1145     foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
1146         if (widget->isHovered()) {
1147             return widget;
1148         }
1149     }
1150
1151     return 0;
1152 }
1153
1154 KItemListWidget* KItemListController::widgetForPos(const QPointF& pos) const
1155 {
1156     Q_ASSERT(m_view);
1157
1158     foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
1159         const QPointF mappedPos = widget->mapFromItem(m_view, pos);
1160
1161         const bool hovered = widget->contains(mappedPos) &&
1162                              !widget->expansionToggleRect().contains(mappedPos);
1163         if (hovered) {
1164             return widget;
1165         }
1166     }
1167
1168     return 0;
1169 }
1170
1171 void KItemListController::updateKeyboardAnchor()
1172 {
1173     const bool validAnchor = m_keyboardAnchorIndex >= 0 &&
1174                              m_keyboardAnchorIndex < m_model->count() &&
1175                              keyboardAnchorPos(m_keyboardAnchorIndex) == m_keyboardAnchorPos;
1176     if (!validAnchor) {
1177         const int index = m_selectionManager->currentItem();
1178         m_keyboardAnchorIndex = index;
1179         m_keyboardAnchorPos = keyboardAnchorPos(index);
1180     }
1181 }
1182
1183 int KItemListController::nextRowIndex(int index) const
1184 {
1185     if (m_keyboardAnchorIndex < 0) {
1186         return index;
1187     }
1188
1189     const int maxIndex = m_model->count() - 1;
1190     if (index == maxIndex) {
1191         return index;
1192     }
1193
1194     // Calculate the index of the last column inside the row of the current index
1195     int lastColumnIndex = index;
1196     while (keyboardAnchorPos(lastColumnIndex + 1) > keyboardAnchorPos(lastColumnIndex)) {
1197         ++lastColumnIndex;
1198         if (lastColumnIndex >= maxIndex) {
1199             return index;
1200         }
1201     }
1202
1203     // Based on the last column index go to the next row and calculate the nearest index
1204     // that is below the current index
1205     int nextRowIndex = lastColumnIndex + 1;
1206     int searchIndex = nextRowIndex;
1207     qreal minDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(nextRowIndex));
1208     while (searchIndex < maxIndex && keyboardAnchorPos(searchIndex + 1) > keyboardAnchorPos(searchIndex)) {
1209         ++searchIndex;
1210         const qreal searchDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(searchIndex));
1211         if (searchDiff < minDiff) {
1212             minDiff = searchDiff;
1213             nextRowIndex = searchIndex;
1214         }
1215     }
1216
1217     return nextRowIndex;
1218 }
1219
1220 int KItemListController::previousRowIndex(int index) const
1221 {
1222     if (m_keyboardAnchorIndex < 0 || index == 0) {
1223         return index;
1224     }
1225
1226     // Calculate the index of the first column inside the row of the current index
1227     int firstColumnIndex = index;
1228     while (keyboardAnchorPos(firstColumnIndex - 1) < keyboardAnchorPos(firstColumnIndex)) {
1229         --firstColumnIndex;
1230         if (firstColumnIndex <= 0) {
1231             return index;
1232         }
1233     }
1234
1235     // Based on the first column index go to the previous row and calculate the nearest index
1236     // that is above the current index
1237     int previousRowIndex = firstColumnIndex - 1;
1238     int searchIndex = previousRowIndex;
1239     qreal minDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(previousRowIndex));
1240     while (searchIndex > 0 && keyboardAnchorPos(searchIndex - 1) < keyboardAnchorPos(searchIndex)) {
1241         --searchIndex;
1242         const qreal searchDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(searchIndex));
1243         if (searchDiff < minDiff) {
1244             minDiff = searchDiff;
1245             previousRowIndex = searchIndex;
1246         }
1247     }
1248
1249     return previousRowIndex;
1250 }
1251
1252 qreal KItemListController::keyboardAnchorPos(int index) const
1253 {
1254     const QRectF itemRect = m_view->itemRect(index);
1255     if (!itemRect.isEmpty()) {
1256         return (m_view->scrollOrientation() == Qt::Vertical) ? itemRect.x() : itemRect.y();
1257     }
1258
1259     return 0;
1260 }
1261
1262 void KItemListController::updateExtendedSelectionRegion()
1263 {
1264     if (m_view) {
1265         const bool extend = (m_selectionBehavior != MultiSelection);
1266         KItemListStyleOption option = m_view->styleOption();
1267         if (option.extendedSelectionRegion != extend) {
1268             option.extendedSelectionRegion = extend;
1269             m_view->setStyleOption(option);
1270         }
1271     }
1272 }
1273
1274 #include "kitemlistcontroller.moc"