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