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 <KGlobalSettings>
  36 #include <KDebug>
  37
  38 KItemListController::KItemListController(QObject* parent) :
  39     QObject(parent),
  40     m_dragging(false),
  41     m_selectionBehavior(NoSelection),
  42     m_model(0),
  43     m_view(0),
  44     m_selectionManager(new KItemListSelectionManager(this)),
  45     m_pressedIndex(-1),
  46     m_pressedMousePos(),
  47     m_oldSelection()
  48 {
  49 }
  50
  51 KItemListController::~KItemListController()
  52 {
  53 }
  54
  55 void KItemListController::setModel(KItemModelBase* model)
  56 {
  57     if (m_model == model) {
  58         return;
  59     }
  60
  61     KItemModelBase* oldModel = m_model;
  62     m_model = model;
  63
  64     if (m_view) {
  65         m_view->setModel(m_model);
  66     }
  67
  68     m_selectionManager->setModel(m_model);
  69
  70     emit modelChanged(m_model, oldModel);
  71 }
  72
  73 KItemModelBase* KItemListController::model() const
  74 {
  75     return m_model;
  76 }
  77
  78 KItemListSelectionManager* KItemListController::selectionManager() const
  79 {
  80     return m_selectionManager;
  81 }
  82
  83 void KItemListController::setView(KItemListView* view)
  84 {
  85     if (m_view == view) {
  86         return;
  87     }
  88
  89     KItemListView* oldView = m_view;
  90     if (oldView) {
  91         disconnect(oldView, SIGNAL(offsetChanged(qreal,qreal)), this, SLOT(slotViewOffsetChanged(qreal,qreal)));
  92     }
  93
  94     m_view = view;
  95
  96     if (m_view) {
  97         m_view->setController(this);
  98         m_view->setModel(m_model);
  99         connect(m_view, SIGNAL(offsetChanged(qreal,qreal)), this, SLOT(slotViewOffsetChanged(qreal,qreal)));
 100     }
 101
 102     emit viewChanged(m_view, oldView);
 103 }
 104
 105 KItemListView* KItemListController::view() const
 106 {
 107     return m_view;
 108 }
 109
 110 void KItemListController::setSelectionBehavior(SelectionBehavior behavior)
 111 {
 112     m_selectionBehavior = behavior;
 113 }
 114
 115 KItemListController::SelectionBehavior KItemListController::selectionBehavior() const
 116 {
 117     return m_selectionBehavior;
 118 }
 119
 120 bool KItemListController::showEvent(QShowEvent* event)
 121 {
 122     Q_UNUSED(event);
 123     return false;
 124 }
 125
 126 bool KItemListController::hideEvent(QHideEvent* event)
 127 {
 128     Q_UNUSED(event);
 129     return false;
 130 }
 131
 132 bool KItemListController::keyPressEvent(QKeyEvent* event)
 133 {
 134     const bool shiftPressed = event->modifiers() & Qt::ShiftModifier;
 135     const bool controlPressed = event->modifiers() & Qt::ControlModifier;
 136     const bool shiftOrControlPressed = shiftPressed || controlPressed;
 137
 138     int index = m_selectionManager->currentItem();
 139     const int itemCount = m_model->count();
 140     const int itemsPerRow = m_view->itemsPerOffset();
 141
 142     // For horizontal scroll orientation, transform
 143     // the arrow keys to simplify the event handling.
 144     int key = event->key();
 145     if (m_view->scrollOrientation() == Qt::Horizontal) {
 146         switch (key) {
 147         case Qt::Key_Up:    key = Qt::Key_Left; break;
 148         case Qt::Key_Down:  key = Qt::Key_Right; break;
 149         case Qt::Key_Left:  key = Qt::Key_Up; break;
 150         case Qt::Key_Right: key = Qt::Key_Down; break;
 151         default:            break;
 152         }
 153     }
 154
 155     switch (key) {
 156     case Qt::Key_Home:
 157         index = 0;
 158         break;
 159
 160     case Qt::Key_End:
 161         index = itemCount - 1;
 162         break;
 163
 164     case Qt::Key_Left:
 165         if (index > 0) {
 166             index--;
 167         }
 168         break;
 169
 170     case Qt::Key_Right:
 171         if (index < itemCount - 1) {
 172             index++;
 173         }
 174         break;
 175
 176     case Qt::Key_Up:
 177         if (index >= itemsPerRow) {
 178             index -= itemsPerRow;
 179         }
 180         break;
 181
 182     case Qt::Key_Down:
 183         if (index + itemsPerRow < itemCount) {
 184             // We are not in the last row yet.
 185             index += itemsPerRow;
 186         }
 187         else {
 188             // We are either in the last row already, or we are in the second-last row,
 189             // and there is no item below the current item.
 190             // In the latter case, we jump to the very last item.
 191             const int currentColumn = index % itemsPerRow;
 192             const int lastItemColumn = (itemCount - 1) % itemsPerRow;
 193             const bool inLastRow = currentColumn < lastItemColumn;
 194             if (!inLastRow) {
 195                 index = itemCount - 1;
 196             }
 197         }
 198         break;
 199
 200     case Qt::Key_Space:
 201         if (controlPressed) {
 202             m_selectionManager->endAnchoredSelection();
 203             m_selectionManager->setSelected(index, 1, KItemListSelectionManager::Toggle);
 204             m_selectionManager->beginAnchoredSelection(index);
 205         }
 206
 207     default:
 208         break;
 209     }
 210
 211     if (m_selectionManager->currentItem() != index) {
 212         if (controlPressed) {
 213             m_selectionManager->endAnchoredSelection();
 214         }
 215
 216         m_selectionManager->setCurrentItem(index);
 217
 218         if (!shiftOrControlPressed || m_selectionBehavior == SingleSelection) {
 219             m_selectionManager->clearSelection();
 220             m_selectionManager->setSelected(index, 1);
 221         }
 222
 223         if (!shiftPressed) {
 224             m_selectionManager->beginAnchoredSelection(index);
 225         }
 226     }
 227     return true;
 228 }
 229
 230 bool KItemListController::inputMethodEvent(QInputMethodEvent* event)
 231 {
 232     Q_UNUSED(event);
 233     return false;
 234 }
 235
 236 bool KItemListController::mousePressEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 237 {
 238     if (!m_view) {
 239         return false;
 240     }
 241
 242     m_dragging = false;
 243     m_pressedMousePos = transform.map(event->pos());
 244     m_pressedIndex = m_view->itemAt(m_pressedMousePos);
 245
 246     if (m_view->isAboveExpansionToggle(m_pressedIndex, m_pressedMousePos)) {
 247         return true;
 248     }
 249
 250     const bool shiftPressed = event->modifiers() & Qt::ShiftModifier;
 251     const bool controlPressed = event->modifiers() & Qt::ControlModifier;
 252
 253     if (m_selectionBehavior == SingleSelection) {
 254         m_selectionManager->clearSelection();
 255     }
 256
 257     if (!shiftPressed) {
 258         // Finish the anchored selection before the current index is changed
 259         m_selectionManager->endAnchoredSelection();
 260     }
 261
 262     if (m_pressedIndex >= 0) {
 263         m_selectionManager->setCurrentItem(m_pressedIndex);
 264
 265         switch (m_selectionBehavior) {
 266         case NoSelection:
 267             break;
 268
 269         case SingleSelection:
 270             m_selectionManager->setSelected(m_pressedIndex);
 271             break;
 272
 273         case MultiSelection:
 274             if (controlPressed) {
 275                 m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
 276                 m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 277             } else if (!shiftPressed || !m_selectionManager->isAnchoredSelectionActive()) {
 278                 // Select the pressed item and start a new anchored selection
 279                 m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Select);
 280                 m_selectionManager->beginAnchoredSelection(m_pressedIndex);
 281             }
 282             break;
 283
 284         default:
 285             Q_ASSERT(false);
 286             break;
 287         }
 288
 289         return true;
 290     } else {
 291         KItemListRubberBand* rubberBand = m_view->rubberBand();
 292         QPointF startPos = m_pressedMousePos;
 293         if (m_view->scrollOrientation() == Qt::Vertical) {
 294             startPos.ry() += m_view->offset();
 295             if (m_view->itemSize().width() < 0) {
 296                 // Use a special rubberband for views that have only one column and
 297                 // expand the rubberband to use the whole width of the view.
 298                 startPos.setX(0);
 299             }
 300         } else {
 301             startPos.rx() += m_view->offset();
 302         }
 303
 304         m_oldSelection = m_selectionManager->selectedItems();
 305         rubberBand->setStartPosition(startPos);
 306         rubberBand->setEndPosition(startPos);
 307         rubberBand->setActive(true);
 308         connect(rubberBand, SIGNAL(endPositionChanged(QPointF,QPointF)), this, SLOT(slotRubberBandChanged()));
 309     }
 310
 311     return false;
 312 }
 313
 314 bool KItemListController::mouseMoveEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 315 {
 316     if (!m_view) {
 317         return false;
 318     }
 319
 320     if (m_pressedIndex >= 0) {
 321         // Check whether a dragging should be started
 322         if (!m_dragging && (event->buttons() & Qt::LeftButton)) {
 323             const QPointF pos = transform.map(event->pos());
 324             const qreal minDragDiff = 4;
 325             const bool hasMinDragDiff = qAbs(pos.x() - m_pressedMousePos.x()) >= minDragDiff ||
 326                                         qAbs(pos.y() - m_pressedMousePos.y()) >= minDragDiff;
 327             if (hasMinDragDiff && startDragging()) {
 328                 m_dragging = true;
 329             }
 330         }
 331     } else {
 332         KItemListRubberBand* rubberBand = m_view->rubberBand();
 333         if (rubberBand->isActive()) {
 334             QPointF endPos = transform.map(event->pos());
 335             if (m_view->scrollOrientation() == Qt::Vertical) {
 336                 endPos.ry() += m_view->offset();
 337                 if (m_view->itemSize().width() < 0) {
 338                     // Use a special rubberband for views that have only one column and
 339                     // expand the rubberband to use the whole width of the view.
 340                     endPos.setX(m_view->size().width());
 341                 }
 342             } else {
 343                 endPos.rx() += m_view->offset();
 344             }
 345             rubberBand->setEndPosition(endPos);
 346         }
 347     }
 348
 349     return false;
 350 }
 351
 352 bool KItemListController::mouseReleaseEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 353 {
 354     if (!m_view) {
 355         return false;
 356     }
 357
 358     const bool shiftOrControlPressed = event->modifiers() & Qt::ShiftModifier ||
 359                                        event->modifiers() & Qt::ControlModifier;
 360
 361     bool clearSelection = !shiftOrControlPressed && !m_dragging && !(event->button() == Qt::RightButton);
 362
 363     KItemListRubberBand* rubberBand = m_view->rubberBand();
 364     if (rubberBand->isActive()) {
 365         disconnect(rubberBand, SIGNAL(endPositionChanged(QPointF,QPointF)), this, SLOT(slotRubberBandChanged()));
 366         rubberBand->setActive(false);
 367         m_oldSelection.clear();
 368
 369         if (rubberBand->startPosition() != rubberBand->endPosition()) {
 370             clearSelection = false;
 371         }
 372     }
 373
 374     const QPointF pos = transform.map(event->pos());
 375     const int index = m_view->itemAt(pos);
 376
 377     if (index >= 0 && index == m_pressedIndex) {
 378         // The release event is done above the same item as the press event
 379
 380         if (clearSelection) {
 381             // Clear the previous selection but reselect the current index
 382             m_selectionManager->setSelectedItems(QSet<int>() << index);
 383         }
 384
 385         bool emitItemClicked = true;
 386         if (event->button() & Qt::LeftButton) {
 387             if (m_view->isAboveExpansionToggle(index, pos)) {
 388                 emit itemExpansionToggleClicked(index);
 389                 emitItemClicked = false;
 390             } else if (shiftOrControlPressed || !KGlobalSettings::singleClick()) {
 391                 emitItemClicked = false;
 392             }
 393         }
 394
 395         if (emitItemClicked) {
 396             emit itemClicked(index, event->button());
 397         }
 398     } else if (clearSelection) {
 399         m_selectionManager->clearSelection();
 400     }
 401
 402     m_dragging = false;
 403     m_pressedMousePos = QPointF();
 404     m_pressedIndex = -1;
 405     return false;
 406 }
 407
 408 bool KItemListController::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 409 {
 410     const QPointF pos = transform.map(event->pos());
 411     const int index = m_view->itemAt(pos);
 412
 413     bool emitItemClicked = !KGlobalSettings::singleClick() &&
 414                            (event->button() & Qt::LeftButton) &&
 415                            index >= 0 && index < m_model->count();
 416     if (emitItemClicked) {
 417         emit itemClicked(index, event->button());
 418     }
 419     return false;
 420 }
 421
 422 bool KItemListController::dragEnterEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 423 {
 424     Q_UNUSED(event);
 425     Q_UNUSED(transform);
 426     return false;
 427 }
 428
 429 bool KItemListController::dragLeaveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 430 {
 431     Q_UNUSED(event);
 432     Q_UNUSED(transform);
 433     return false;
 434 }
 435
 436 bool KItemListController::dragMoveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 437 {
 438     Q_UNUSED(event);
 439     Q_UNUSED(transform);
 440     return false;
 441 }
 442
 443 bool KItemListController::dropEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 444 {
 445     Q_UNUSED(event);
 446     Q_UNUSED(transform);
 447
 448     m_dragging = false;
 449     return false;
 450 }
 451
 452 bool KItemListController::hoverEnterEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 453 {
 454     Q_UNUSED(event);
 455     Q_UNUSED(transform);
 456     return false;
 457 }
 458
 459 bool KItemListController::hoverMoveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 460 {
 461     // The implementation assumes that only one item can get hovered no matter
 462     // whether they overlap or not.
 463
 464     Q_UNUSED(transform);
 465     if (!m_model || !m_view) {
 466         return false;
 467     }
 468
 469     // Search the previously hovered item that might get unhovered
 470     KItemListWidget* unhoveredWidget = 0;
 471     foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
 472         if (widget->isHovered()) {
 473             unhoveredWidget = widget;
 474             break;
 475         }
 476     }
 477
 478     // Search the currently hovered item
 479     KItemListWidget* hoveredWidget = 0;
 480     foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
 481         const QPointF mappedPos = widget->mapFromItem(m_view, event->pos());
 482
 483         const bool hovered = widget->contains(mappedPos) &&
 484                              !widget->expansionToggleRect().contains(mappedPos) &&
 485                              !widget->selectionToggleRect().contains(mappedPos);
 486         if (hovered) {
 487             hoveredWidget = widget;
 488             break;
 489         }
 490     }
 491
 492     if (unhoveredWidget != hoveredWidget) {
 493         if (unhoveredWidget) {
 494             unhoveredWidget->setHovered(false);
 495             emit itemUnhovered(unhoveredWidget->index());
 496         }
 497
 498         if (hoveredWidget) {
 499             hoveredWidget->setHovered(true);
 500             emit itemHovered(hoveredWidget->index());
 501         }
 502     }
 503
 504     return false;
 505 }
 506
 507 bool KItemListController::hoverLeaveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 508 {
 509     Q_UNUSED(event);
 510     Q_UNUSED(transform);
 511
 512     if (!m_model || !m_view) {
 513         return false;
 514     }
 515
 516     foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
 517         if (widget->isHovered()) {
 518             widget->setHovered(false);
 519             emit itemUnhovered(widget->index());
 520         }
 521     }
 522     return false;
 523 }
 524
 525 bool KItemListController::wheelEvent(QGraphicsSceneWheelEvent* event, const QTransform& transform)
 526 {
 527     Q_UNUSED(event);
 528     Q_UNUSED(transform);
 529     return false;
 530 }
 531
 532 bool KItemListController::resizeEvent(QGraphicsSceneResizeEvent* event, const QTransform& transform)
 533 {
 534     Q_UNUSED(event);
 535     Q_UNUSED(transform);
 536     return false;
 537 }
 538
 539 bool KItemListController::processEvent(QEvent* event, const QTransform& transform)
 540 {
 541     if (!event) {
 542         return false;
 543     }
 544
 545     switch (event->type()) {
 546     case QEvent::KeyPress:
 547         return keyPressEvent(static_cast<QKeyEvent*>(event));
 548     case QEvent::InputMethod:
 549         return inputMethodEvent(static_cast<QInputMethodEvent*>(event));
 550     case QEvent::GraphicsSceneMousePress:
 551         return mousePressEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
 552     case QEvent::GraphicsSceneMouseMove:
 553         return mouseMoveEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
 554     case QEvent::GraphicsSceneMouseRelease:
 555         return mouseReleaseEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
 556     case QEvent::GraphicsSceneMouseDoubleClick:
 557         return mouseDoubleClickEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
 558     case QEvent::GraphicsSceneWheel:
 559          return wheelEvent(static_cast<QGraphicsSceneWheelEvent*>(event), QTransform());
 560     case QEvent::GraphicsSceneDragEnter:
 561         return dragEnterEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
 562     case QEvent::GraphicsSceneDragLeave:
 563         return dragLeaveEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
 564     case QEvent::GraphicsSceneDragMove:
 565         return dragMoveEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
 566     case QEvent::GraphicsSceneDrop:
 567         return dropEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
 568     case QEvent::GraphicsSceneHoverEnter:
 569         return hoverEnterEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
 570     case QEvent::GraphicsSceneHoverMove:
 571         return hoverMoveEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
 572     case QEvent::GraphicsSceneHoverLeave:
 573         return hoverLeaveEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
 574     case QEvent::GraphicsSceneResize:
 575         return resizeEvent(static_cast<QGraphicsSceneResizeEvent*>(event), transform);
 576     default:
 577         break;
 578     }
 579
 580     return false;
 581 }
 582
 583 void KItemListController::slotViewOffsetChanged(qreal current, qreal previous)
 584 {
 585     if (!m_view) {
 586         return;
 587     }
 588
 589     KItemListRubberBand* rubberBand = m_view->rubberBand();
 590     if (rubberBand->isActive()) {
 591         const qreal diff = current - previous;
 592         // TODO: Ideally just QCursor::pos() should be used as
 593         // new end-position but it seems there is no easy way
 594         // to have something like QWidget::mapFromGlobal() for QGraphicsWidget
 595         // (... or I just missed an easy way to do the mapping)
 596         QPointF endPos = rubberBand->endPosition();
 597         if (m_view->scrollOrientation() == Qt::Vertical) {
 598             endPos.ry() += diff;
 599         } else {
 600             endPos.rx() += diff;
 601         }
 602
 603         rubberBand->setEndPosition(endPos);
 604     }
 605 }
 606
 607 void KItemListController::slotRubberBandChanged()
 608 {
 609     if (!m_view || !m_model || m_model->count() <= 0) {
 610         return;
 611     }
 612
 613     const KItemListRubberBand* rubberBand = m_view->rubberBand();
 614     const QPointF startPos = rubberBand->startPosition();
 615     const QPointF endPos = rubberBand->endPosition();
 616     QRectF rubberBandRect = QRectF(startPos, endPos).normalized();
 617
 618     const bool scrollVertical = (m_view->scrollOrientation() == Qt::Vertical);
 619     if (scrollVertical) {
 620         rubberBandRect.translate(0, -m_view->offset());
 621     } else {
 622         rubberBandRect.translate(-m_view->offset(), 0);
 623     }
 624
 625     if (!m_oldSelection.isEmpty()) {
 626         // Clear the old selection that was available before the rubberband has
 627         // been activated in case if no Shift- or Control-key are pressed
 628         const bool shiftOrControlPressed = QApplication::keyboardModifiers() & Qt::ShiftModifier ||
 629                                            QApplication::keyboardModifiers() & Qt::ControlModifier;
 630         if (!shiftOrControlPressed) {
 631             m_oldSelection.clear();
 632         }
 633     }
 634
 635     QSet<int> selectedItems;
 636
 637     // Select all visible items that intersect with the rubberband
 638     foreach (const KItemListWidget* widget, m_view->visibleItemListWidgets()) {
 639         const int index = widget->index();
 640
 641         const QRectF widgetRect = m_view->itemBoundingRect(index);
 642         if (widgetRect.intersects(rubberBandRect)) {
 643             const QRectF iconRect = widget->iconBoundingRect().translated(widgetRect.topLeft());
 644             const QRectF textRect = widget->textBoundingRect().translated(widgetRect.topLeft());
 645             if (iconRect.intersects(rubberBandRect) || textRect.intersects(rubberBandRect)) {
 646                 selectedItems.insert(index);
 647             }
 648         }
 649     }
 650
 651     // Select all invisible items that intersect with the rubberband. Instead of
 652     // iterating all items only the area which might be touched by the rubberband
 653     // will be checked.
 654     const bool increaseIndex = scrollVertical ?
 655                                startPos.y() > endPos.y(): startPos.x() > endPos.x();
 656
 657     int index = increaseIndex ? m_view->lastVisibleIndex() + 1 : m_view->firstVisibleIndex() - 1;
 658     bool selectionFinished = false;
 659     do {
 660         const QRectF widgetRect = m_view->itemBoundingRect(index);
 661         if (widgetRect.intersects(rubberBandRect)) {
 662             selectedItems.insert(index);
 663         }
 664
 665         if (increaseIndex) {
 666             ++index;
 667             selectionFinished = (index >= m_model->count()) ||
 668                                 ( scrollVertical && widgetRect.top()  > rubberBandRect.bottom()) ||
 669                                 (!scrollVertical && widgetRect.left() > rubberBandRect.right());
 670         } else {
 671             --index;
 672             selectionFinished = (index < 0) ||
 673                                 ( scrollVertical && widgetRect.bottom() < rubberBandRect.top()) ||
 674                                 (!scrollVertical && widgetRect.right()  < rubberBandRect.left());
 675         }
 676     } while (!selectionFinished);
 677
 678     m_selectionManager->setSelectedItems(selectedItems + m_oldSelection);
 679 }
 680
 681 bool KItemListController::startDragging()
 682 {
 683     if (!m_view || !m_model) {
 684         return false;
 685     }
 686
 687     const QSet<int> selectedItems = m_selectionManager->selectedItems();
 688     QMimeData* data = m_model->createMimeData(selectedItems);
 689     if (!data) {
 690         return false;
 691     }
 692
 693     // The created drag object will be owned and deleted
 694     // by QApplication::activeWindow().
 695     QDrag* drag = new QDrag(QApplication::activeWindow());
 696     drag->setMimeData(data);
 697
 698     const QPixmap pixmap = m_view->createDragPixmap(selectedItems);
 699     drag->setPixmap(pixmap);
 700
 701     drag->exec(Qt::MoveAction | Qt::CopyAction | Qt::LinkAction, Qt::IgnoreAction);
 702     return true;
 703 }
 704
 705 #include "kitemlistcontroller.moc"