src/kitemviews/kitemlistcontroller.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com>             *
   3  *                                                                         *
   4  *   Based on the Itemviews NG project from Trolltech Labs:                *
   5  *   http://qt.gitorious.org/qt-labs/itemviews-ng                          *
   6  *                                                                         *
   7  *   This program is free software; you can redistribute it and/or modify  *
   8  *   it under the terms of the GNU General Public License as published by  *
   9  *   the Free Software Foundation; either version 2 of the License, or     *
  10  *   (at your option) any later version.                                   *
  11  *                                                                         *
  12  *   This program is distributed in the hope that it will be useful,       *
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  15  *   GNU General Public License for more details.                          *
  16  *                                                                         *
  17  *   You should have received a copy of the GNU General Public License     *
  18  *   along with this program; if not, write to the                         *
  19  *   Free Software Foundation, Inc.,                                       *
  20  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  21  ***************************************************************************/
  22
  23 #include "kitemlistcontroller.h"
  24
  25 #include "kitemlistview.h"
  26 #include "kitemlistrubberband_p.h"
  27 #include "kitemlistselectionmanager.h"
  28
  29 #include <QApplication>
  30 #include <QDrag>
  31 #include <QEvent>
  32 #include <QGraphicsSceneEvent>
  33 #include <QMimeData>
  34
  35 #include <KDebug>
  36
  37 KItemListController::KItemListController(QObject* parent) :
  38     QObject(parent),
  39     m_dragging(false),
  40     m_selectionBehavior(NoSelection),
  41     m_model(0),
  42     m_view(0),
  43     m_selectionManager(new KItemListSelectionManager(this)),
  44     m_pressedIndex(-1),
  45     m_pressedMousePos(),
  46     m_oldSelection()
  47 {
  48 }
  49
  50 KItemListController::~KItemListController()
  51 {
  52 }
  53
  54 void KItemListController::setModel(KItemModelBase* model)
  55 {
  56     if (m_model == model) {
  57         return;
  58     }
  59
  60     KItemModelBase* oldModel = m_model;
  61     m_model = model;
  62
  63     if (m_view) {
  64         m_view->setModel(m_model);
  65     }
  66
  67     m_selectionManager->setModel(m_model);
  68
  69     emit modelChanged(m_model, oldModel);
  70 }
  71
  72 KItemModelBase* KItemListController::model() const
  73 {
  74     return m_model;
  75 }
  76
  77 KItemListSelectionManager* KItemListController::selectionManager() const
  78 {
  79     return m_selectionManager;
  80 }
  81
  82 void KItemListController::setView(KItemListView* view)
  83 {
  84     if (m_view == view) {
  85         return;
  86     }
  87
  88     KItemListView* oldView = m_view;
  89     if (oldView) {
  90         disconnect(oldView, SIGNAL(offsetChanged(qreal,qreal)), this, SLOT(slotViewOffsetChanged(qreal,qreal)));
  91     }
  92
  93     m_view = view;
  94
  95     if (m_view) {
  96         m_view->setController(this);
  97         m_view->setModel(m_model);
  98         connect(m_view, SIGNAL(offsetChanged(qreal,qreal)), this, SLOT(slotViewOffsetChanged(qreal,qreal)));
  99     }
 100
 101     emit viewChanged(m_view, oldView);
 102 }
 103
 104 KItemListView* KItemListController::view() const
 105 {
 106     return m_view;
 107 }
 108
 109 void KItemListController::setSelectionBehavior(SelectionBehavior behavior)
 110 {
 111     m_selectionBehavior = behavior;
 112 }
 113
 114 KItemListController::SelectionBehavior KItemListController::selectionBehavior() const
 115 {
 116     return m_selectionBehavior;
 117 }
 118
 119 bool KItemListController::showEvent(QShowEvent* event)
 120 {
 121     Q_UNUSED(event);
 122     return false;
 123 }
 124
 125 bool KItemListController::hideEvent(QHideEvent* event)
 126 {
 127     Q_UNUSED(event);
 128     return false;
 129 }
 130
 131 bool KItemListController::keyPressEvent(QKeyEvent* event)
 132 {
 133     const bool shiftPressed = event->modifiers() & Qt::ShiftModifier;
 134     const bool controlPressed = event->modifiers() & Qt::ControlModifier;
 135     const bool shiftOrControlPressed = shiftPressed || controlPressed;
 136
 137     int index = m_selectionManager->currentItem();
 138     const int itemCount = m_model->count();
 139     const int itemsPerRow = m_view->itemsPerOffset();
 140
 141     // For horizontal scroll orientation, transform
 142     // the arrow keys to simplify the event handling.
 143     int key = event->key();
 144     if (m_view->scrollOrientation() == Qt::Horizontal) {
 145         switch (key) {
 146         case Qt::Key_Up:    key = Qt::Key_Left; break;
 147         case Qt::Key_Down:  key = Qt::Key_Right; break;
 148         case Qt::Key_Left:  key = Qt::Key_Up; break;
 149         case Qt::Key_Right: key = Qt::Key_Down; break;
 150         default:            break;
 151         }
 152     }
 153
 154     switch (key) {
 155     case Qt::Key_Home:
 156         index = 0;
 157         break;
 158
 159     case Qt::Key_End:
 160         index = itemCount - 1;
 161         break;
 162
 163     case Qt::Key_Left:
 164         if (index > 0) {
 165             index--;
 166         }
 167         break;
 168
 169     case Qt::Key_Right:
 170         if (index < itemCount - 1) {
 171             index++;
 172         }
 173         break;
 174
 175     case Qt::Key_Up:
 176         if (index >= itemsPerRow) {
 177             index -= itemsPerRow;
 178         }
 179         break;
 180
 181     case Qt::Key_Down:
 182         if (index + itemsPerRow < itemCount) {
 183             // We are not in the last row yet.
 184             index += itemsPerRow;
 185         }
 186         else {
 187             // We are either in the last row already, or we are in the second-last row,
 188             // and there is no item below the current item.
 189             // In the latter case, we jump to the very last item.
 190             const int currentColumn = index % itemsPerRow;
 191             const int lastItemColumn = (itemCount - 1) % itemsPerRow;
 192             const bool inLastRow = currentColumn < lastItemColumn;
 193             if (!inLastRow) {
 194                 index = itemCount - 1;
 195             }
 196         }
 197         break;
 198
 199     case Qt::Key_Space:
 200         if (controlPressed) {
 201             m_selectionManager->endAnchoredSelection();
 202             m_selectionManager->setSelected(index, 1, KItemListSelectionManager::Toggle);
 203             m_selectionManager->beginAnchoredSelection(index);
 204         }
 205
 206     default:
 207         break;
 208     }
 209
 210     if (m_selectionManager->currentItem() != index) {
 211         if (controlPressed) {
 212             m_selectionManager->endAnchoredSelection();
 213         }
 214
 215         m_selectionManager->setCurrentItem(index);
 216
 217         if (!shiftOrControlPressed || m_selectionBehavior == SingleSelection) {
 218             m_selectionManager->clearSelection();
 219             m_selectionManager->setSelected(index, 1);
 220         }
 221
 222         if (!shiftPressed) {
 223             m_selectionManager->beginAnchoredSelection(index);
 224         }
 225     }
 226     return true;
 227 }
 228
 229 bool KItemListController::inputMethodEvent(QInputMethodEvent* event)
 230 {
 231     Q_UNUSED(event);
 232     return false;
 233 }
 234
 235 bool KItemListController::mousePressEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 236 {
 237     if (!m_view) {
 238         return false;
 239     }
 240
 241     m_pressedMousePos = transform.map(event->pos());
 242     m_pressedIndex = m_view->itemAt(m_pressedMousePos);
 243
 244     if (m_view->isAboveExpansionToggle(m_pressedIndex, m_pressedMousePos)) {
 245         return true;
 246     }
 247
 248     const bool shiftPressed = event->modifiers() & Qt::ShiftModifier;
 249     const bool controlPressed = event->modifiers() & Qt::ControlModifier;
 250     const bool shiftOrControlPressed = shiftPressed || controlPressed;
 251
 252     if (!shiftOrControlPressed || m_selectionBehavior == SingleSelection) {
 253         m_selectionManager->clearSelection();
 254     }
 255
 256     if (!shiftPressed) {
 257         // Finish the anchored selection before the current index is changed
 258         m_selectionManager->endAnchoredSelection();
 259     }
 260
 261     if (m_pressedIndex >= 0) {
 262         m_selectionManager->setCurrentItem(m_pressedIndex);
 263
 264         switch (m_selectionBehavior) {
 265         case NoSelection:
 266             break;
 267
 268         case SingleSelection:
 269             m_selectionManager->setSelected(m_pressedIndex);
 270             break;
 271
 272         case MultiSelection:
 273             if (controlPressed) {
 274                 m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
 275                 m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 276             } else if (!shiftPressed || !m_selectionManager->isAnchoredSelectionActive()) {
 277                 // Select the pressed item and start a new anchored selection
 278                 m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Select);
 279                 m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 280             }
 281             break;
 282
 283         default:
 284             Q_ASSERT(false);
 285             break;
 286         }
 287
 288         return true;
 289     } else {
 290         KItemListRubberBand* rubberBand = m_view->rubberBand();
 291         QPointF startPos = m_pressedMousePos;
 292         if (m_view->scrollOrientation() == Qt::Vertical) {
 293             startPos.ry() += m_view->offset();
 294             if (m_view->itemSize().width() < 0) {
 295                 // Use a special rubberband for views that have only one column and
 296                 // expand the rubberband to use the whole width of the view.
 297                 startPos.setX(0);
 298             }
 299         } else {
 300             startPos.rx() += m_view->offset();
 301         }
 302
 303         m_oldSelection = m_selectionManager->selectedItems();
 304         rubberBand->setStartPosition(startPos);
 305         rubberBand->setEndPosition(startPos);
 306         rubberBand->setActive(true);
 307         connect(rubberBand, SIGNAL(endPositionChanged(QPointF,QPointF)), this, SLOT(slotRubberBandChanged()));
 308     }
 309
 310     return false;
 311 }
 312
 313 bool KItemListController::mouseMoveEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 314 {
 315     if (!m_view) {
 316         return false;
 317     }
 318
 319     if (m_pressedIndex >= 0) {
 320         // Check whether a dragging should be started
 321         if (!m_dragging) {
 322             const QPointF pos = transform.map(event->pos());
 323             const qreal minDragDiff = 4;
 324             m_dragging = qAbs(pos.x() - m_pressedMousePos.x()) >= minDragDiff ||
 325                          qAbs(pos.y() - m_pressedMousePos.y()) >= minDragDiff;
 326             if (m_dragging) {
 327                 startDragging();
 328             }
 329         }
 330     } else {
 331         KItemListRubberBand* rubberBand = m_view->rubberBand();
 332         if (rubberBand->isActive()) {
 333             QPointF endPos = transform.map(event->pos());
 334             if (m_view->scrollOrientation() == Qt::Vertical) {
 335                 endPos.ry() += m_view->offset();
 336                 if (m_view->itemSize().width() < 0) {
 337                     // Use a special rubberband for views that have only one column and
 338                     // expand the rubberband to use the whole width of the view.
 339                     endPos.setX(m_view->size().width());
 340                 }
 341             } else {
 342                 endPos.rx() += m_view->offset();
 343             }
 344             rubberBand->setEndPosition(endPos);
 345         }
 346     }
 347
 348     return false;
 349 }
 350
 351 bool KItemListController::mouseReleaseEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 352 {
 353     if (!m_view) {
 354         return false;
 355     }
 356
 357     KItemListRubberBand* rubberBand = m_view->rubberBand();
 358     if (rubberBand->isActive()) {
 359         disconnect(rubberBand, SIGNAL(endPositionChanged(QPointF,QPointF)), this, SLOT(slotRubberBandChanged()));
 360         rubberBand->setActive(false);
 361         m_oldSelection.clear();
 362     } else {
 363         const QPointF pos = transform.map(event->pos());
 364         const int index = m_view->itemAt(pos);
 365         const bool shiftOrControlPressed = event->modifiers() & Qt::ShiftModifier ||
 366                                            event->modifiers() & Qt::ControlModifier;
 367
 368         if (index >= 0 && index == m_pressedIndex) {
 369             // The release event is done above the same item as the press event
 370             bool emitItemClicked = true;
 371             if (event->button() & Qt::LeftButton) {
 372                 if (m_view->isAboveExpansionToggle(index, pos)) {
 373                     emit itemExpansionToggleClicked(index);
 374                     emitItemClicked = false;
 375                 } else if (shiftOrControlPressed) {
 376                     // The mouse click should only update the selection, not trigger the item
 377                     emitItemClicked = false;
 378                 }
 379             }
 380
 381             if (emitItemClicked) {
 382                 emit itemClicked(index, event->button());
 383             }
 384         } else if (!shiftOrControlPressed) {
 385             m_selectionManager->clearSelection();
 386         }
 387     }
 388
 389     m_dragging = false;
 390     m_pressedMousePos = QPointF();
 391     m_pressedIndex = -1;
 392     return false;
 393 }
 394
 395 bool KItemListController::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 396 {
 397     Q_UNUSED(event);
 398     Q_UNUSED(transform);
 399     return false;
 400 }
 401
 402 bool KItemListController::dragEnterEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 403 {
 404     Q_UNUSED(event);
 405     Q_UNUSED(transform);
 406     return false;
 407 }
 408
 409 bool KItemListController::dragLeaveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 410 {
 411     Q_UNUSED(event);
 412     Q_UNUSED(transform);
 413     return false;
 414 }
 415
 416 bool KItemListController::dragMoveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 417 {
 418     Q_UNUSED(event);
 419     Q_UNUSED(transform);
 420     return false;
 421 }
 422
 423 bool KItemListController::dropEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 424 {
 425     Q_UNUSED(event);
 426     Q_UNUSED(transform);
 427
 428     m_dragging = false;
 429     return false;
 430 }
 431
 432 bool KItemListController::hoverEnterEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 433 {
 434     Q_UNUSED(event);
 435     Q_UNUSED(transform);
 436     return false;
 437 }
 438
 439 bool KItemListController::hoverMoveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 440 {
 441     // The implementation assumes that only one item can get hovered no matter
 442     // whether they overlap or not.
 443
 444     Q_UNUSED(transform);
 445     if (!m_model || !m_view) {
 446         return false;
 447     }
 448
 449     // Search the previously hovered item that might get unhovered
 450     KItemListWidget* unhoveredWidget = 0;
 451     foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
 452         if (widget->isHovered()) {
 453             unhoveredWidget = widget;
 454             break;
 455         }
 456     }
 457
 458     // Search the currently hovered item
 459     KItemListWidget* hoveredWidget = 0;
 460     foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
 461         const QPointF mappedPos = widget->mapFromItem(m_view, event->pos());
 462
 463         const bool hovered = widget->contains(mappedPos) &&
 464                              !widget->expansionToggleRect().contains(mappedPos) &&
 465                              !widget->selectionToggleRect().contains(mappedPos);
 466         if (hovered) {
 467             hoveredWidget = widget;
 468             break;
 469         }
 470     }
 471
 472     if (unhoveredWidget != hoveredWidget) {
 473         if (unhoveredWidget) {
 474             unhoveredWidget->setHovered(false);
 475             emit itemUnhovered(unhoveredWidget->index());
 476         }
 477
 478         if (hoveredWidget) {
 479             hoveredWidget->setHovered(true);
 480             emit itemHovered(hoveredWidget->index());
 481         }
 482     }
 483
 484     return false;
 485 }
 486
 487 bool KItemListController::hoverLeaveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 488 {
 489     Q_UNUSED(event);
 490     Q_UNUSED(transform);
 491
 492     if (!m_model || !m_view) {
 493         return false;
 494     }
 495
 496     foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
 497         if (widget->isHovered()) {
 498             widget->setHovered(false);
 499             emit itemUnhovered(widget->index());
 500         }
 501     }
 502     return false;
 503 }
 504
 505 bool KItemListController::wheelEvent(QGraphicsSceneWheelEvent* event, const QTransform& transform)
 506 {
 507     Q_UNUSED(event);
 508     Q_UNUSED(transform);
 509     return false;
 510 }
 511
 512 bool KItemListController::resizeEvent(QGraphicsSceneResizeEvent* event, const QTransform& transform)
 513 {
 514     Q_UNUSED(event);
 515     Q_UNUSED(transform);
 516     return false;
 517 }
 518
 519 bool KItemListController::processEvent(QEvent* event, const QTransform& transform)
 520 {
 521     if (!event) {
 522         return false;
 523     }
 524
 525     switch (event->type()) {
 526     case QEvent::KeyPress:
 527         return keyPressEvent(static_cast<QKeyEvent*>(event));
 528     case QEvent::InputMethod:
 529         return inputMethodEvent(static_cast<QInputMethodEvent*>(event));
 530     case QEvent::GraphicsSceneMousePress:
 531         return mousePressEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
 532     case QEvent::GraphicsSceneMouseMove:
 533         return mouseMoveEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
 534     case QEvent::GraphicsSceneMouseRelease:
 535         return mouseReleaseEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
 536     case QEvent::GraphicsSceneWheel:
 537          return wheelEvent(static_cast<QGraphicsSceneWheelEvent*>(event), QTransform());
 538     case QEvent::GraphicsSceneDragEnter:
 539         return dragEnterEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
 540     case QEvent::GraphicsSceneDragLeave:
 541         return dragLeaveEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
 542     case QEvent::GraphicsSceneDragMove:
 543         return dragMoveEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
 544     case QEvent::GraphicsSceneDrop:
 545         return dropEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
 546     case QEvent::GraphicsSceneHoverEnter:
 547         return hoverEnterEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
 548     case QEvent::GraphicsSceneHoverMove:
 549         return hoverMoveEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
 550     case QEvent::GraphicsSceneHoverLeave:
 551         return hoverLeaveEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
 552     case QEvent::GraphicsSceneResize:
 553         return resizeEvent(static_cast<QGraphicsSceneResizeEvent*>(event), transform);
 554     default:
 555         break;
 556     }
 557
 558     return false;
 559 }
 560
 561 void KItemListController::slotViewOffsetChanged(qreal current, qreal previous)
 562 {
 563     if (!m_view) {
 564         return;
 565     }
 566
 567     KItemListRubberBand* rubberBand = m_view->rubberBand();
 568     if (rubberBand->isActive()) {
 569         const qreal diff = current - previous;
 570         // TODO: Ideally just QCursor::pos() should be used as
 571         // new end-position but it seems there is no easy way
 572         // to have something like QWidget::mapFromGlobal() for QGraphicsWidget
 573         // (... or I just missed an easy way to do the mapping)
 574         QPointF endPos = rubberBand->endPosition();
 575         if (m_view->scrollOrientation() == Qt::Vertical) {
 576             endPos.ry() += diff;
 577         } else {
 578             endPos.rx() += diff;
 579         }
 580
 581         rubberBand->setEndPosition(endPos);
 582     }
 583 }
 584
 585 void KItemListController::slotRubberBandChanged()
 586 {
 587     if (!m_view || !m_model || m_model->count() <= 0) {
 588         return;
 589     }
 590
 591     const KItemListRubberBand* rubberBand = m_view->rubberBand();
 592     const QPointF startPos = rubberBand->startPosition();
 593     const QPointF endPos = rubberBand->endPosition();
 594     QRectF rubberBandRect = QRectF(startPos, endPos).normalized();
 595
 596     const bool scrollVertical = (m_view->scrollOrientation() == Qt::Vertical);
 597     if (scrollVertical) {
 598         rubberBandRect.translate(0, -m_view->offset());
 599     } else {
 600         rubberBandRect.translate(-m_view->offset(), 0);
 601     }
 602
 603     if (!m_oldSelection.isEmpty()) {
 604         // Clear the old selection that was available before the rubberband has
 605         // been activated in case if no Shift- or Control-key are pressed
 606         const bool shiftOrControlPressed = QApplication::keyboardModifiers() & Qt::ShiftModifier ||
 607                                            QApplication::keyboardModifiers() & Qt::ControlModifier;
 608         if (!shiftOrControlPressed) {
 609             m_oldSelection.clear();
 610         }
 611     }
 612
 613     QSet<int> selectedItems;
 614
 615     // Select all visible items that intersect with the rubberband
 616     foreach (const KItemListWidget* widget, m_view->visibleItemListWidgets()) {
 617         const int index = widget->index();
 618
 619         const QRectF widgetRect = m_view->itemBoundingRect(index);
 620         if (widgetRect.intersects(rubberBandRect)) {
 621             const QRectF iconRect = widget->iconBoundingRect().translated(widgetRect.topLeft());
 622             const QRectF textRect = widget->textBoundingRect().translated(widgetRect.topLeft());
 623             if (iconRect.intersects(rubberBandRect) || textRect.intersects(rubberBandRect)) {
 624                 selectedItems.insert(index);
 625             }
 626         }
 627     }
 628
 629     // Select all invisible items that intersect with the rubberband. Instead of
 630     // iterating all items only the area which might be touched by the rubberband
 631     // will be checked.
 632     const bool increaseIndex = scrollVertical ?
 633                                startPos.y() > endPos.y(): startPos.x() > endPos.x();
 634
 635     int index = increaseIndex ? m_view->lastVisibleIndex() + 1 : m_view->firstVisibleIndex() - 1;
 636     bool selectionFinished = false;
 637     do {
 638         const QRectF widgetRect = m_view->itemBoundingRect(index);
 639         if (widgetRect.intersects(rubberBandRect)) {
 640             selectedItems.insert(index);
 641         }
 642
 643         if (increaseIndex) {
 644             ++index;
 645             selectionFinished = (index >= m_model->count()) ||
 646                                 ( scrollVertical && widgetRect.top()  > rubberBandRect.bottom()) ||
 647                                 (!scrollVertical && widgetRect.left() > rubberBandRect.right());
 648         } else {
 649             --index;
 650             selectionFinished = (index < 0) ||
 651                                 ( scrollVertical && widgetRect.bottom() < rubberBandRect.top()) ||
 652                                 (!scrollVertical && widgetRect.right()  < rubberBandRect.left());
 653         }
 654     } while (!selectionFinished);
 655
 656     m_selectionManager->setSelectedItems(selectedItems + m_oldSelection);
 657 }
 658
 659 void KItemListController::startDragging()
 660 {
 661     if (!m_view || !m_model) {
 662         return;
 663     }
 664
 665     const QSet<int> selectedItems = m_selectionManager->selectedItems();
 666     QMimeData* data = m_model->createMimeData(selectedItems);
 667     if (!data) {
 668         return;
 669     }
 670
 671     // The created drag object will be owned and deleted
 672     // by QApplication::activeWindow().
 673     QDrag* drag = new QDrag(QApplication::activeWindow());
 674     drag->setMimeData(data);
 675
 676     const QPixmap pixmap = m_view->createDragPixmap(selectedItems);
 677     drag->setPixmap(pixmap);
 678
 679     drag->exec(Qt::MoveAction | Qt::CopyAction | Qt::LinkAction, Qt::IgnoreAction);
 680 }
 681
 682 #include "kitemlistcontroller.moc"