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_singleClickActivationEnforced(false),
  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::setSingleClickActivationEnforced(bool singleClick)
 194 {
 195     m_singleClickActivationEnforced = singleClick;
 196 }
 197
 198 bool KItemListController::singleClickActivationEnforced() const
 199 {
 200     return m_singleClickActivationEnforced;
 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 KItemSet selectedItems = m_selectionManager->selectedItems();
 368         if (selectedItems.count() >= 2) {
 369             emit itemsActivated(selectedItems);
 370         } else if (selectedItems.count() == 1) {
 371             emit itemActivated(selectedItems.first());
 372         } else {
 373             emit itemActivated(index);
 374         }
 375         break;
 376     }
 377
 378     case Qt::Key_Menu: {
 379         // Emit the signal itemContextMenuRequested() in case if at least one
 380         // item is selected. Otherwise the signal viewContextMenuRequested() will be emitted.
 381         const KItemSet selectedItems = m_selectionManager->selectedItems();
 382         int index = -1;
 383         if (selectedItems.count() >= 2) {
 384             const int currentItemIndex = m_selectionManager->currentItem();
 385             index = selectedItems.contains(currentItemIndex)
 386                     ? currentItemIndex : selectedItems.first();
 387         } else if (selectedItems.count() == 1) {
 388             index = selectedItems.first();
 389         }
 390
 391         if (index >= 0) {
 392             const QRectF contextRect = m_view->itemContextRect(index);
 393             const QPointF pos(m_view->scene()->views().first()->mapToGlobal(contextRect.bottomRight().toPoint()));
 394             emit itemContextMenuRequested(index, pos);
 395         } else {
 396             emit viewContextMenuRequested(QCursor::pos());
 397         }
 398         break;
 399     }
 400
 401     case Qt::Key_Escape:
 402         if (m_selectionBehavior != SingleSelection) {
 403             m_selectionManager->clearSelection();
 404         }
 405         m_keyboardManager->cancelSearch();
 406         emit escapePressed();
 407         break;
 408
 409     case Qt::Key_Space:
 410         if (m_selectionBehavior == MultiSelection) {
 411             if (controlPressed) {
 412                 // Toggle the selection state of the current item.
 413                 m_selectionManager->endAnchoredSelection();
 414                 m_selectionManager->setSelected(index, 1, KItemListSelectionManager::Toggle);
 415                 m_selectionManager->beginAnchoredSelection(index);
 416                 break;
 417             } else {
 418                 // Select the current item if it is not selected yet.
 419                 const int current = m_selectionManager->currentItem();
 420                 if (!m_selectionManager->isSelected(current)) {
 421                     m_selectionManager->setSelected(current);
 422                     break;
 423                 }
 424             }
 425         }
 426         // Fall through to the default case and add the Space to the current search string.
 427
 428     default:
 429         m_keyboardManager->addKeys(event->text());
 430         // Make sure unconsumed events get propagated up the chain. #302329
 431         event->ignore();
 432         return false;
 433     }
 434
 435     if (m_selectionManager->currentItem() != index) {
 436         switch (m_selectionBehavior) {
 437         case NoSelection:
 438             m_selectionManager->setCurrentItem(index);
 439             break;
 440
 441         case SingleSelection:
 442             m_selectionManager->setCurrentItem(index);
 443             m_selectionManager->clearSelection();
 444             m_selectionManager->setSelected(index, 1);
 445             break;
 446
 447         case MultiSelection:
 448             if (controlPressed) {
 449                 m_selectionManager->endAnchoredSelection();
 450             }
 451
 452             m_selectionManager->setCurrentItem(index);
 453
 454             if (!shiftOrControlPressed) {
 455                 m_selectionManager->clearSelection();
 456                 m_selectionManager->setSelected(index, 1);
 457             }
 458
 459             if (!shiftPressed) {
 460                 m_selectionManager->beginAnchoredSelection(index);
 461             }
 462             break;
 463         }
 464
 465         m_view->scrollToItem(index);
 466     }
 467     return true;
 468 }
 469
 470 void KItemListController::slotChangeCurrentItem(const QString& text, bool searchFromNextItem)
 471 {
 472     if (!m_model || m_model->count() == 0) {
 473         return;
 474     }
 475     const int currentIndex = m_selectionManager->currentItem();
 476     int index;
 477     if (searchFromNextItem) {
 478         index = m_model->indexForKeyboardSearch(text, (currentIndex + 1) % m_model->count());
 479     } else {
 480         index = m_model->indexForKeyboardSearch(text, currentIndex);
 481     }
 482     if (index >= 0) {
 483         m_selectionManager->setCurrentItem(index);
 484
 485         if (m_selectionBehavior != NoSelection) {
 486             m_selectionManager->clearSelection();
 487             m_selectionManager->setSelected(index, 1);
 488             m_selectionManager->beginAnchoredSelection(index);
 489         }
 490
 491         m_view->scrollToItem(index);
 492     }
 493 }
 494
 495 void KItemListController::slotAutoActivationTimeout()
 496 {
 497     if (!m_model || !m_view) {
 498         return;
 499     }
 500
 501     const int index = m_autoActivationTimer->property("index").toInt();
 502     if (index < 0 || index >= m_model->count()) {
 503         return;
 504     }
 505
 506     /* m_view->isUnderMouse() fixes a bug in the Folder-View-Panel and in the
 507      * Places-Panel.
 508      *
 509      * Bug: When you drag a file onto a Folder-View-Item or a Places-Item and
 510      * then move away before the auto-activation timeout triggers, than the
 511      * item still becomes activated/expanded.
 512      *
 513      * See Bug 293200 and 305783
 514      */
 515     if (m_model->supportsDropping(index) && m_view->isUnderMouse()) {
 516         if (m_view->supportsItemExpanding() && m_model->isExpandable(index)) {
 517             const bool expanded = m_model->isExpanded(index);
 518             m_model->setExpanded(index, !expanded);
 519         } else if (m_autoActivationBehavior != ExpansionOnly) {
 520             emit itemActivated(index);
 521         }
 522     }
 523 }
 524
 525 bool KItemListController::inputMethodEvent(QInputMethodEvent* event)
 526 {
 527     Q_UNUSED(event);
 528     return false;
 529 }
 530
 531 bool KItemListController::mousePressEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 532 {
 533     if (!m_view) {
 534         return false;
 535     }
 536
 537     m_pressedMousePos = transform.map(event->pos());
 538     m_pressedIndex = m_view->itemAt(m_pressedMousePos);
 539     emit mouseButtonPressed(m_pressedIndex, event->buttons());
 540
 541     if (m_view->isAboveExpansionToggle(m_pressedIndex, m_pressedMousePos)) {
 542         m_selectionManager->endAnchoredSelection();
 543         m_selectionManager->setCurrentItem(m_pressedIndex);
 544         m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 545         return true;
 546     }
 547
 548     m_selectionTogglePressed = m_view->isAboveSelectionToggle(m_pressedIndex, m_pressedMousePos);
 549     if (m_selectionTogglePressed) {
 550         m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
 551         // The previous anchored selection has been finished already in
 552         // KItemListSelectionManager::setSelected(). We can safely change
 553         // the current item and start a new anchored selection now.
 554         m_selectionManager->setCurrentItem(m_pressedIndex);
 555         m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 556         return true;
 557     }
 558
 559     const bool shiftPressed = event->modifiers() & Qt::ShiftModifier;
 560     const bool controlPressed = event->modifiers() & Qt::ControlModifier;
 561
 562     // The previous selection is cleared if either
 563     // 1. The selection mode is SingleSelection, or
 564     // 2. the selection mode is MultiSelection, and *none* of the following conditions are met:
 565     //    a) Shift or Control are pressed.
 566     //    b) The clicked item is selected already. In that case, the user might want to:
 567     //       - start dragging multiple items, or
 568     //       - open the context menu and perform an action for all selected items.
 569     const bool shiftOrControlPressed = shiftPressed || controlPressed;
 570     const bool pressedItemAlreadySelected = m_pressedIndex >= 0 && m_selectionManager->isSelected(m_pressedIndex);
 571     const bool clearSelection = m_selectionBehavior == SingleSelection ||
 572                                 (!shiftOrControlPressed && !pressedItemAlreadySelected);
 573     if (clearSelection) {
 574         m_selectionManager->clearSelection();
 575     } else if (pressedItemAlreadySelected && !shiftOrControlPressed && (event->buttons() & Qt::LeftButton)) {
 576         // The user might want to start dragging multiple items, but if he clicks the item
 577         // in order to trigger it instead, the other selected items must be deselected.
 578         // However, we do not know yet what the user is going to do.
 579         // -> remember that the user pressed an item which had been selected already and
 580         //    clear the selection in mouseReleaseEvent(), unless the items are dragged.
 581         m_clearSelectionIfItemsAreNotDragged = true;
 582     }
 583
 584     if (!shiftPressed) {
 585         // Finish the anchored selection before the current index is changed
 586         m_selectionManager->endAnchoredSelection();
 587     }
 588
 589     if (m_pressedIndex >= 0) {
 590         m_selectionManager->setCurrentItem(m_pressedIndex);
 591
 592         switch (m_selectionBehavior) {
 593         case NoSelection:
 594             break;
 595
 596         case SingleSelection:
 597             m_selectionManager->setSelected(m_pressedIndex);
 598             break;
 599
 600         case MultiSelection:
 601             if (controlPressed && !shiftPressed) {
 602                 m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
 603                 m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 604             } else if (!shiftPressed || !m_selectionManager->isAnchoredSelectionActive()) {
 605                 // Select the pressed item and start a new anchored selection
 606                 m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Select);
 607                 m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 608             }
 609             break;
 610
 611         default:
 612             Q_ASSERT(false);
 613             break;
 614         }
 615
 616         if (event->buttons() & Qt::RightButton) {
 617             emit itemContextMenuRequested(m_pressedIndex, event->screenPos());
 618         }
 619
 620         return true;
 621     }
 622
 623     if (event->buttons() & Qt::RightButton) {
 624         const QRectF headerBounds = m_view->headerBoundaries();
 625         if (headerBounds.contains(event->pos())) {
 626             emit headerContextMenuRequested(event->screenPos());
 627         } else {
 628             emit viewContextMenuRequested(event->screenPos());
 629         }
 630         return true;
 631     }
 632
 633     if (m_selectionBehavior == MultiSelection) {
 634         QPointF startPos = m_pressedMousePos;
 635         if (m_view->scrollOrientation() == Qt::Vertical) {
 636             startPos.ry() += m_view->scrollOffset();
 637             if (m_view->itemSize().width() < 0) {
 638                 // Use a special rubberband for views that have only one column and
 639                 // expand the rubberband to use the whole width of the view.
 640                 startPos.setX(0);
 641             }
 642         } else {
 643             startPos.rx() += m_view->scrollOffset();
 644         }
 645
 646         m_oldSelection = m_selectionManager->selectedItems();
 647         KItemListRubberBand* rubberBand = m_view->rubberBand();
 648         rubberBand->setStartPosition(startPos);
 649         rubberBand->setEndPosition(startPos);
 650         rubberBand->setActive(true);
 651         connect(rubberBand, SIGNAL(endPositionChanged(QPointF,QPointF)), this, SLOT(slotRubberBandChanged()));
 652         m_view->setAutoScroll(true);
 653     }
 654
 655     return false;
 656 }
 657
 658 bool KItemListController::mouseMoveEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 659 {
 660     if (!m_view) {
 661         return false;
 662     }
 663
 664     if (m_pressedIndex >= 0) {
 665         // Check whether a dragging should be started
 666         if (event->buttons() & Qt::LeftButton) {
 667             const QPointF pos = transform.map(event->pos());
 668             if ((pos - m_pressedMousePos).manhattanLength() >= QApplication::startDragDistance()) {
 669                 if (!m_selectionManager->isSelected(m_pressedIndex)) {
 670                     // Always assure that the dragged item gets selected. Usually this is already
 671                     // done on the mouse-press event, but when using the selection-toggle on a
 672                     // selected item the dragged item is not selected yet.
 673                     m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
 674                 } else {
 675                     // A selected item has been clicked to drag all selected items
 676                     // -> the selection should not be cleared when the mouse button is released.
 677                     m_clearSelectionIfItemsAreNotDragged = false;
 678                 }
 679
 680                 startDragging();
 681             }
 682         }
 683     } else {
 684         KItemListRubberBand* rubberBand = m_view->rubberBand();
 685         if (rubberBand->isActive()) {
 686             QPointF endPos = transform.map(event->pos());
 687
 688             // Update the current item.
 689             const int newCurrent = m_view->itemAt(endPos);
 690             if (newCurrent >= 0) {
 691                 // It's expected that the new current index is also the new anchor (bug 163451).
 692                 m_selectionManager->endAnchoredSelection();
 693                 m_selectionManager->setCurrentItem(newCurrent);
 694                 m_selectionManager->beginAnchoredSelection(newCurrent);
 695             }
 696
 697             if (m_view->scrollOrientation() == Qt::Vertical) {
 698                 endPos.ry() += m_view->scrollOffset();
 699                 if (m_view->itemSize().width() < 0) {
 700                     // Use a special rubberband for views that have only one column and
 701                     // expand the rubberband to use the whole width of the view.
 702                     endPos.setX(m_view->size().width());
 703                 }
 704             } else {
 705                 endPos.rx() += m_view->scrollOffset();
 706             }
 707             rubberBand->setEndPosition(endPos);
 708         }
 709     }
 710
 711     return false;
 712 }
 713
 714 bool KItemListController::mouseReleaseEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 715 {
 716     if (!m_view) {
 717         return false;
 718     }
 719
 720     emit mouseButtonReleased(m_pressedIndex, event->buttons());
 721
 722     const bool isAboveSelectionToggle = m_view->isAboveSelectionToggle(m_pressedIndex, m_pressedMousePos);
 723     if (isAboveSelectionToggle) {
 724         m_selectionTogglePressed = false;
 725         return true;
 726     }
 727
 728     if (!isAboveSelectionToggle && m_selectionTogglePressed) {
 729         m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
 730         m_selectionTogglePressed = false;
 731         return true;
 732     }
 733
 734     const bool shiftOrControlPressed = event->modifiers() & Qt::ShiftModifier ||
 735                                        event->modifiers() & Qt::ControlModifier;
 736
 737     KItemListRubberBand* rubberBand = m_view->rubberBand();
 738     if (rubberBand->isActive()) {
 739         disconnect(rubberBand, SIGNAL(endPositionChanged(QPointF,QPointF)), this, SLOT(slotRubberBandChanged()));
 740         rubberBand->setActive(false);
 741         m_oldSelection.clear();
 742         m_view->setAutoScroll(false);
 743     }
 744
 745     const QPointF pos = transform.map(event->pos());
 746     const int index = m_view->itemAt(pos);
 747
 748     if (index >= 0 && index == m_pressedIndex) {
 749         // The release event is done above the same item as the press event
 750
 751         if (m_clearSelectionIfItemsAreNotDragged) {
 752             // A selected item has been clicked, but no drag operation has been started
 753             // -> clear the rest of the selection.
 754             m_selectionManager->clearSelection();
 755             m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Select);
 756             m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 757         }
 758
 759         if (event->button() & Qt::LeftButton) {
 760             bool emitItemActivated = true;
 761             if (m_view->isAboveExpansionToggle(index, pos)) {
 762                 const bool expanded = m_model->isExpanded(index);
 763                 m_model->setExpanded(index, !expanded);
 764
 765                 emit itemExpansionToggleClicked(index);
 766                 emitItemActivated = false;
 767             } else if (shiftOrControlPressed) {
 768                 // The mouse click should only update the selection, not trigger the item
 769                 emitItemActivated = false;
 770             } else if (!(KGlobalSettings::singleClick() || m_singleClickActivationEnforced)) {
 771                 emitItemActivated = false;
 772             }
 773             if (emitItemActivated) {
 774                 emit itemActivated(index);
 775             }
 776         } else if (event->button() & Qt::MidButton) {
 777             emit itemMiddleClicked(index);
 778         }
 779     }
 780
 781     m_pressedMousePos = QPointF();
 782     m_pressedIndex = -1;
 783     m_clearSelectionIfItemsAreNotDragged = false;
 784     return false;
 785 }
 786
 787 bool KItemListController::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 788 {
 789     const QPointF pos = transform.map(event->pos());
 790     const int index = m_view->itemAt(pos);
 791
 792     // Expand item if desired - See Bug 295573
 793     if (m_mouseDoubleClickAction != ActivateItemOnly) {
 794         if (m_view && m_model && m_view->supportsItemExpanding() && m_model->isExpandable(index)) {
 795             const bool expanded = m_model->isExpanded(index);
 796             m_model->setExpanded(index, !expanded);
 797         }
 798     }
 799
 800     bool emitItemActivated = !(KGlobalSettings::singleClick() || m_singleClickActivationEnforced) &&
 801                              (event->button() & Qt::LeftButton) &&
 802                              index >= 0 && index < m_model->count();
 803     if (emitItemActivated) {
 804         emit itemActivated(index);
 805     }
 806     return false;
 807 }
 808
 809 bool KItemListController::dragEnterEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 810 {
 811     Q_UNUSED(event);
 812     Q_UNUSED(transform);
 813     return false;
 814 }
 815
 816 bool KItemListController::dragLeaveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 817 {
 818     Q_UNUSED(event);
 819     Q_UNUSED(transform);
 820
 821     m_view->setAutoScroll(false);
 822     m_view->hideDropIndicator();
 823
 824     KItemListWidget* widget = hoveredWidget();
 825     if (widget) {
 826         widget->setHovered(false);
 827         emit itemUnhovered(widget->index());
 828     }
 829     return false;
 830 }
 831
 832 bool KItemListController::dragMoveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 833 {
 834     if (!m_model || !m_view) {
 835         return false;
 836     }
 837
 838     event->acceptProposedAction();
 839
 840     KItemListWidget* oldHoveredWidget = hoveredWidget();
 841
 842     const QPointF pos = transform.map(event->pos());
 843     KItemListWidget* newHoveredWidget = widgetForPos(pos);
 844
 845     if (oldHoveredWidget != newHoveredWidget) {
 846         m_autoActivationTimer->stop();
 847
 848         if (oldHoveredWidget) {
 849             oldHoveredWidget->setHovered(false);
 850             emit itemUnhovered(oldHoveredWidget->index());
 851         }
 852     }
 853
 854     if (newHoveredWidget) {
 855         bool droppingBetweenItems = false;
 856         if (m_model->sortRole().isEmpty()) {
 857             // The model supports inserting items between other items.
 858             droppingBetweenItems = (m_view->showDropIndicator(pos) >= 0);
 859         }
 860
 861         const int index = newHoveredWidget->index();
 862         if (!droppingBetweenItems) {
 863             if (m_model->supportsDropping(index)) {
 864                 // Something has been dragged on an item.
 865                 m_view->hideDropIndicator();
 866                 if (!newHoveredWidget->isHovered()) {
 867                     newHoveredWidget->setHovered(true);
 868                     emit itemHovered(index);
 869                 }
 870
 871                 if (!m_autoActivationTimer->isActive() && m_autoActivationTimer->interval() >= 0) {
 872                     m_autoActivationTimer->setProperty("index", index);
 873                     m_autoActivationTimer->start();
 874                 }
 875             }
 876         } else {
 877             m_autoActivationTimer->stop();
 878             if (newHoveredWidget && newHoveredWidget->isHovered()) {
 879                 newHoveredWidget->setHovered(false);
 880                 emit itemUnhovered(index);
 881             }
 882         }
 883     } else {
 884         m_view->hideDropIndicator();
 885     }
 886
 887     return false;
 888 }
 889
 890 bool KItemListController::dropEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 891 {
 892     if (!m_view) {
 893         return false;
 894     }
 895
 896     m_autoActivationTimer->stop();
 897     m_view->setAutoScroll(false);
 898
 899     const QPointF pos = transform.map(event->pos());
 900
 901     int dropAboveIndex = -1;
 902     if (m_model->sortRole().isEmpty()) {
 903         // The model supports inserting of items between other items.
 904         dropAboveIndex = m_view->showDropIndicator(pos);
 905     }
 906
 907     if (dropAboveIndex >= 0) {
 908         // Something has been dropped between two items.
 909         m_view->hideDropIndicator();
 910         emit aboveItemDropEvent(dropAboveIndex, event);
 911     } else {
 912         // Something has been dropped on an item or on an empty part of the view.
 913         emit itemDropEvent(m_view->itemAt(pos), event);
 914     }
 915
 916     QAccessible::updateAccessibility(view(), 0, QAccessible::DragDropEnd);
 917
 918     return true;
 919 }
 920
 921 bool KItemListController::hoverEnterEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 922 {
 923     Q_UNUSED(event);
 924     Q_UNUSED(transform);
 925     return false;
 926 }
 927
 928 bool KItemListController::hoverMoveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 929 {
 930     Q_UNUSED(transform);
 931     if (!m_model || !m_view) {
 932         return false;
 933     }
 934
 935     KItemListWidget* oldHoveredWidget = hoveredWidget();
 936     const QPointF pos = transform.map(event->pos());
 937     KItemListWidget* newHoveredWidget = widgetForPos(pos);
 938
 939     if (oldHoveredWidget != newHoveredWidget) {
 940         if (oldHoveredWidget) {
 941             oldHoveredWidget->setHovered(false);
 942             emit itemUnhovered(oldHoveredWidget->index());
 943         }
 944
 945         if (newHoveredWidget) {
 946             newHoveredWidget->setHovered(true);
 947             emit itemHovered(newHoveredWidget->index());
 948         }
 949     }
 950
 951     return false;
 952 }
 953
 954 bool KItemListController::hoverLeaveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 955 {
 956     Q_UNUSED(event);
 957     Q_UNUSED(transform);
 958
 959     if (!m_model || !m_view) {
 960         return false;
 961     }
 962
 963     foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
 964         if (widget->isHovered()) {
 965             widget->setHovered(false);
 966             emit itemUnhovered(widget->index());
 967         }
 968     }
 969     return false;
 970 }
 971
 972 bool KItemListController::wheelEvent(QGraphicsSceneWheelEvent* event, const QTransform& transform)
 973 {
 974     Q_UNUSED(event);
 975     Q_UNUSED(transform);
 976     return false;
 977 }
 978
 979 bool KItemListController::resizeEvent(QGraphicsSceneResizeEvent* event, const QTransform& transform)
 980 {
 981     Q_UNUSED(event);
 982     Q_UNUSED(transform);
 983     return false;
 984 }
 985
 986 bool KItemListController::processEvent(QEvent* event, const QTransform& transform)
 987 {
 988     if (!event) {
 989         return false;
 990     }
 991
 992     switch (event->type()) {
 993     case QEvent::KeyPress:
 994         return keyPressEvent(static_cast<QKeyEvent*>(event));
 995     case QEvent::InputMethod:
 996         return inputMethodEvent(static_cast<QInputMethodEvent*>(event));
 997     case QEvent::GraphicsSceneMousePress:
 998         return mousePressEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
 999     case QEvent::GraphicsSceneMouseMove:
1000         return mouseMoveEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
1001     case QEvent::GraphicsSceneMouseRelease:
1002         return mouseReleaseEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
1003     case QEvent::GraphicsSceneMouseDoubleClick:
1004         return mouseDoubleClickEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
1005     case QEvent::GraphicsSceneWheel:
1006          return wheelEvent(static_cast<QGraphicsSceneWheelEvent*>(event), QTransform());
1007     case QEvent::GraphicsSceneDragEnter:
1008         return dragEnterEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
1009     case QEvent::GraphicsSceneDragLeave:
1010         return dragLeaveEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
1011     case QEvent::GraphicsSceneDragMove:
1012         return dragMoveEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
1013     case QEvent::GraphicsSceneDrop:
1014         return dropEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
1015     case QEvent::GraphicsSceneHoverEnter:
1016         return hoverEnterEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
1017     case QEvent::GraphicsSceneHoverMove:
1018         return hoverMoveEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
1019     case QEvent::GraphicsSceneHoverLeave:
1020         return hoverLeaveEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
1021     case QEvent::GraphicsSceneResize:
1022         return resizeEvent(static_cast<QGraphicsSceneResizeEvent*>(event), transform);
1023     default:
1024         break;
1025     }
1026
1027     return false;
1028 }
1029
1030 void KItemListController::slotViewScrollOffsetChanged(qreal current, qreal previous)
1031 {
1032     if (!m_view) {
1033         return;
1034     }
1035
1036     KItemListRubberBand* rubberBand = m_view->rubberBand();
1037     if (rubberBand->isActive()) {
1038         const qreal diff = current - previous;
1039         // TODO: Ideally just QCursor::pos() should be used as
1040         // new end-position but it seems there is no easy way
1041         // to have something like QWidget::mapFromGlobal() for QGraphicsWidget
1042         // (... or I just missed an easy way to do the mapping)
1043         QPointF endPos = rubberBand->endPosition();
1044         if (m_view->scrollOrientation() == Qt::Vertical) {
1045             endPos.ry() += diff;
1046         } else {
1047             endPos.rx() += diff;
1048         }
1049
1050         rubberBand->setEndPosition(endPos);
1051     }
1052 }
1053
1054 void KItemListController::slotRubberBandChanged()
1055 {
1056     if (!m_view || !m_model || m_model->count() <= 0) {
1057         return;
1058     }
1059
1060     const KItemListRubberBand* rubberBand = m_view->rubberBand();
1061     const QPointF startPos = rubberBand->startPosition();
1062     const QPointF endPos = rubberBand->endPosition();
1063     QRectF rubberBandRect = QRectF(startPos, endPos).normalized();
1064
1065     const bool scrollVertical = (m_view->scrollOrientation() == Qt::Vertical);
1066     if (scrollVertical) {
1067         rubberBandRect.translate(0, -m_view->scrollOffset());
1068     } else {
1069         rubberBandRect.translate(-m_view->scrollOffset(), 0);
1070     }
1071
1072     if (!m_oldSelection.isEmpty()) {
1073         // Clear the old selection that was available before the rubberband has
1074         // been activated in case if no Shift- or Control-key are pressed
1075         const bool shiftOrControlPressed = QApplication::keyboardModifiers() & Qt::ShiftModifier ||
1076                                            QApplication::keyboardModifiers() & Qt::ControlModifier;
1077         if (!shiftOrControlPressed) {
1078             m_oldSelection.clear();
1079         }
1080     }
1081
1082     KItemSet selectedItems;
1083
1084     // Select all visible items that intersect with the rubberband
1085     foreach (const KItemListWidget* widget, m_view->visibleItemListWidgets()) {
1086         const int index = widget->index();
1087
1088         const QRectF widgetRect = m_view->itemRect(index);
1089         if (widgetRect.intersects(rubberBandRect)) {
1090             const QRectF iconRect = widget->iconRect().translated(widgetRect.topLeft());
1091             const QRectF textRect = widget->textRect().translated(widgetRect.topLeft());
1092             if (iconRect.intersects(rubberBandRect) || textRect.intersects(rubberBandRect)) {
1093                 selectedItems.insert(index);
1094             }
1095         }
1096     }
1097
1098     // Select all invisible items that intersect with the rubberband. Instead of
1099     // iterating all items only the area which might be touched by the rubberband
1100     // will be checked.
1101     const bool increaseIndex = scrollVertical ?
1102                                startPos.y() > endPos.y(): startPos.x() > endPos.x();
1103
1104     int index = increaseIndex ? m_view->lastVisibleIndex() + 1 : m_view->firstVisibleIndex() - 1;
1105     bool selectionFinished = false;
1106     do {
1107         const QRectF widgetRect = m_view->itemRect(index);
1108         if (widgetRect.intersects(rubberBandRect)) {
1109             selectedItems.insert(index);
1110         }
1111
1112         if (increaseIndex) {
1113             ++index;
1114             selectionFinished = (index >= m_model->count()) ||
1115                                 ( scrollVertical && widgetRect.top()  > rubberBandRect.bottom()) ||
1116                                 (!scrollVertical && widgetRect.left() > rubberBandRect.right());
1117         } else {
1118             --index;
1119             selectionFinished = (index < 0) ||
1120                                 ( scrollVertical && widgetRect.bottom() < rubberBandRect.top()) ||
1121                                 (!scrollVertical && widgetRect.right()  < rubberBandRect.left());
1122         }
1123     } while (!selectionFinished);
1124
1125     if (QApplication::keyboardModifiers() & Qt::ControlModifier) {
1126         // If Control is pressed, the selection state of all items in the rubberband is toggled.
1127         // Therefore, the new selection contains:
1128         // 1. All previously selected items which are not inside the rubberband, and
1129         // 2. all items inside the rubberband which have not been selected previously.
1130         m_selectionManager->setSelectedItems(m_oldSelection ^ selectedItems);
1131     }
1132     else {
1133         m_selectionManager->setSelectedItems(selectedItems + m_oldSelection);
1134     }
1135 }
1136
1137 void KItemListController::startDragging()
1138 {
1139     if (!m_view || !m_model) {
1140         return;
1141     }
1142
1143     const KItemSet selectedItems = m_selectionManager->selectedItems();
1144     if (selectedItems.isEmpty()) {
1145         return;
1146     }
1147
1148     QMimeData* data = m_model->createMimeData(selectedItems);
1149     if (!data) {
1150         return;
1151     }
1152
1153     // The created drag object will be owned and deleted
1154     // by QApplication::activeWindow().
1155     QDrag* drag = new QDrag(QApplication::activeWindow());
1156     drag->setMimeData(data);
1157
1158     const QPixmap pixmap = m_view->createDragPixmap(selectedItems);
1159     drag->setPixmap(pixmap);
1160
1161     const QPoint hotSpot(pixmap.width() / 2, 0);
1162     drag->setHotSpot(hotSpot);
1163
1164     drag->exec(Qt::MoveAction | Qt::CopyAction | Qt::LinkAction, Qt::CopyAction);
1165     QAccessible::updateAccessibility(view(), 0, QAccessible::DragDropStart);
1166 }
1167
1168 KItemListWidget* KItemListController::hoveredWidget() const
1169 {
1170     Q_ASSERT(m_view);
1171
1172     foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
1173         if (widget->isHovered()) {
1174             return widget;
1175         }
1176     }
1177
1178     return 0;
1179 }
1180
1181 KItemListWidget* KItemListController::widgetForPos(const QPointF& pos) const
1182 {
1183     Q_ASSERT(m_view);
1184
1185     foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
1186         const QPointF mappedPos = widget->mapFromItem(m_view, pos);
1187
1188         const bool hovered = widget->contains(mappedPos) &&
1189                              !widget->expansionToggleRect().contains(mappedPos);
1190         if (hovered) {
1191             return widget;
1192         }
1193     }
1194
1195     return 0;
1196 }
1197
1198 void KItemListController::updateKeyboardAnchor()
1199 {
1200     const bool validAnchor = m_keyboardAnchorIndex >= 0 &&
1201                              m_keyboardAnchorIndex < m_model->count() &&
1202                              keyboardAnchorPos(m_keyboardAnchorIndex) == m_keyboardAnchorPos;
1203     if (!validAnchor) {
1204         const int index = m_selectionManager->currentItem();
1205         m_keyboardAnchorIndex = index;
1206         m_keyboardAnchorPos = keyboardAnchorPos(index);
1207     }
1208 }
1209
1210 int KItemListController::nextRowIndex(int index) const
1211 {
1212     if (m_keyboardAnchorIndex < 0) {
1213         return index;
1214     }
1215
1216     const int maxIndex = m_model->count() - 1;
1217     if (index == maxIndex) {
1218         return index;
1219     }
1220
1221     // Calculate the index of the last column inside the row of the current index
1222     int lastColumnIndex = index;
1223     while (keyboardAnchorPos(lastColumnIndex + 1) > keyboardAnchorPos(lastColumnIndex)) {
1224         ++lastColumnIndex;
1225         if (lastColumnIndex >= maxIndex) {
1226             return index;
1227         }
1228     }
1229
1230     // Based on the last column index go to the next row and calculate the nearest index
1231     // that is below the current index
1232     int nextRowIndex = lastColumnIndex + 1;
1233     int searchIndex = nextRowIndex;
1234     qreal minDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(nextRowIndex));
1235     while (searchIndex < maxIndex && keyboardAnchorPos(searchIndex + 1) > keyboardAnchorPos(searchIndex)) {
1236         ++searchIndex;
1237         const qreal searchDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(searchIndex));
1238         if (searchDiff < minDiff) {
1239             minDiff = searchDiff;
1240             nextRowIndex = searchIndex;
1241         }
1242     }
1243
1244     return nextRowIndex;
1245 }
1246
1247 int KItemListController::previousRowIndex(int index) const
1248 {
1249     if (m_keyboardAnchorIndex < 0 || index == 0) {
1250         return index;
1251     }
1252
1253     // Calculate the index of the first column inside the row of the current index
1254     int firstColumnIndex = index;
1255     while (keyboardAnchorPos(firstColumnIndex - 1) < keyboardAnchorPos(firstColumnIndex)) {
1256         --firstColumnIndex;
1257         if (firstColumnIndex <= 0) {
1258             return index;
1259         }
1260     }
1261
1262     // Based on the first column index go to the previous row and calculate the nearest index
1263     // that is above the current index
1264     int previousRowIndex = firstColumnIndex - 1;
1265     int searchIndex = previousRowIndex;
1266     qreal minDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(previousRowIndex));
1267     while (searchIndex > 0 && keyboardAnchorPos(searchIndex - 1) < keyboardAnchorPos(searchIndex)) {
1268         --searchIndex;
1269         const qreal searchDiff = qAbs(m_keyboardAnchorPos - keyboardAnchorPos(searchIndex));
1270         if (searchDiff < minDiff) {
1271             minDiff = searchDiff;
1272             previousRowIndex = searchIndex;
1273         }
1274     }
1275
1276     return previousRowIndex;
1277 }
1278
1279 qreal KItemListController::keyboardAnchorPos(int index) const
1280 {
1281     const QRectF itemRect = m_view->itemRect(index);
1282     if (!itemRect.isEmpty()) {
1283         return (m_view->scrollOrientation() == Qt::Vertical) ? itemRect.x() : itemRect.y();
1284     }
1285
1286     return 0;
1287 }
1288
1289 void KItemListController::updateExtendedSelectionRegion()
1290 {
1291     if (m_view) {
1292         const bool extend = (m_selectionBehavior != MultiSelection);
1293         KItemListStyleOption option = m_view->styleOption();
1294         if (option.extendedSelectionRegion != extend) {
1295             option.extendedSelectionRegion = extend;
1296             m_view->setStyleOption(option);
1297         }
1298     }
1299 }
1300
1301 #include "kitemlistcontroller.moc"