X-Git-Url: https://cloud.milkyroute.net/gitweb/dolphin.git/blobdiff_plain/58ab93541c70de4fa7cbb90dc3423cfec556dc38..5070666ad2cd5fe3e559adca00a52aed5d137153:/src/kitemviews/kitemlistcontroller.cpp

diff --git a/src/kitemviews/kitemlistcontroller.cpp b/src/kitemviews/kitemlistcontroller.cpp
index afa70e60c..ed23dd1f7 100644
--- a/src/kitemviews/kitemlistcontroller.cpp
+++ b/src/kitemviews/kitemlistcontroller.cpp
@@ -23,12 +23,17 @@
 #include "kitemlistcontroller.h"
 
 #include "kitemlistview.h"
+#include "kitemlistrubberband_p.h"
 #include "kitemlistselectionmanager.h"
+#include "kitemlistkeyboardsearchmanager_p.h"
 
+#include <QApplication>
+#include <QDrag>
 #include <QEvent>
 #include <QGraphicsSceneEvent>
-#include <QTransform>
+#include <QMimeData>
 
+#include <KGlobalSettings>
 #include <KDebug>
 
 KItemListController::KItemListController(QObject* parent) :
@@ -37,8 +42,13 @@ KItemListController::KItemListController(QObject* parent) :
     m_model(0),
     m_view(0),
     m_selectionManager(new KItemListSelectionManager(this)),
-    m_pressedIndex(-1)
+    m_keyboardManager(new KItemListKeyboardSearchManager(this)),
+    m_pressedIndex(-1),
+    m_pressedMousePos(),
+    m_oldSelection()
 {
+    connect(m_keyboardManager, SIGNAL(changeCurrentItem(QString,bool)),
+            this, SLOT(slotChangeCurrentItem(QString,bool)));
 }
 
 KItemListController::~KItemListController()
@@ -80,11 +90,16 @@ void KItemListController::setView(KItemListView* view)
     }
 
     KItemListView* oldView = m_view;
+    if (oldView) {
+        disconnect(oldView, SIGNAL(offsetChanged(qreal,qreal)), this, SLOT(slotViewOffsetChanged(qreal,qreal)));
+    }
+
     m_view = view;
 
     if (m_view) {
         m_view->setController(this);
         m_view->setModel(m_model);
+        connect(m_view, SIGNAL(offsetChanged(qreal,qreal)), this, SLOT(slotViewOffsetChanged(qreal,qreal)));
     }
 
     emit viewChanged(m_view, oldView);
@@ -119,15 +134,128 @@ bool KItemListController::hideEvent(QHideEvent* event)
 
 bool KItemListController::keyPressEvent(QKeyEvent* event)
 {
-    switch (event->key()) {
+    const bool shiftPressed = event->modifiers() & Qt::ShiftModifier;
+    const bool controlPressed = event->modifiers() & Qt::ControlModifier;
+    const bool shiftOrControlPressed = shiftPressed || controlPressed;
+
+    int index = m_selectionManager->currentItem();
+    const int itemCount = m_model->count();
+    const int itemsPerRow = m_view->itemsPerOffset();
+
+    // For horizontal scroll orientation, transform
+    // the arrow keys to simplify the event handling.
+    int key = event->key();
+    if (m_view->scrollOrientation() == Qt::Horizontal) {
+        switch (key) {
+        case Qt::Key_Up:    key = Qt::Key_Left; break;
+        case Qt::Key_Down:  key = Qt::Key_Right; break;
+        case Qt::Key_Left:  key = Qt::Key_Up; break;
+        case Qt::Key_Right: key = Qt::Key_Down; break;
+        default:            break;
+        }
+    }
+
+    switch (key) {
     case Qt::Key_Home:
-        m_selectionManager->setCurrentItem(0);
+        index = 0;
         break;
+
     case Qt::Key_End:
-        m_selectionManager->setCurrentItem(m_model->count() - 1);
+        index = itemCount - 1;
         break;
+
+    case Qt::Key_Left:
+        if (index > 0) {
+            index--;
+        }
+        break;
+
+    case Qt::Key_Right:
+        if (index < itemCount - 1) {
+            index++;
+        }
+        break;
+
+    case Qt::Key_Up:
+        if (index >= itemsPerRow) {
+            index -= itemsPerRow;
+        }
+        break;
+
+    case Qt::Key_Down:
+        if (index + itemsPerRow < itemCount) {
+            // We are not in the last row yet.
+            index += itemsPerRow;
+        }
+        else {
+            // We are either in the last row already, or we are in the second-last row,
+            // and there is no item below the current item.
+            // In the latter case, we jump to the very last item.
+            const int currentColumn = index % itemsPerRow;
+            const int lastItemColumn = (itemCount - 1) % itemsPerRow;
+            const bool inLastRow = currentColumn < lastItemColumn;
+            if (!inLastRow) {
+                index = itemCount - 1;
+            }
+        }
+        break;
+
+    case Qt::Key_Enter:
+    case Qt::Key_Return:
+        emit itemActivated(index);
+        break;
+
+    case Qt::Key_Space:
+        if (controlPressed) {
+            m_selectionManager->endAnchoredSelection();
+            m_selectionManager->setSelected(index, 1, KItemListSelectionManager::Toggle);
+            m_selectionManager->beginAnchoredSelection(index);
+            break;
+        }
+
+    default:
+        m_keyboardManager->addKeys(event->text());
+        return false;
+    }
+
+    if (m_selectionManager->currentItem() != index) {
+        if (controlPressed) {
+            m_selectionManager->endAnchoredSelection();
+        }
+
+        m_selectionManager->setCurrentItem(index);
+
+        if (!shiftOrControlPressed || m_selectionBehavior == SingleSelection) {
+            m_selectionManager->clearSelection();
+            m_selectionManager->setSelected(index, 1);
+        }
+
+        if (!shiftPressed) {
+            m_selectionManager->beginAnchoredSelection(index);
+        }
+    }
+    return true;
+}
+
+void KItemListController::slotChangeCurrentItem(const QString& text, bool searchFromNextItem)
+{
+    if (!m_model) {
+        return;
+    }
+    const int currentIndex = m_selectionManager->currentItem();
+    int index;
+    if (searchFromNextItem) {
+        index = m_model->indexForKeyboardSearch(text, (currentIndex + 1) % m_model->count());
+    }
+    else {
+        index = m_model->indexForKeyboardSearch(text, currentIndex);
+    }
+    if (index >= 0) {
+        m_selectionManager->setCurrentItem(index);
+        m_selectionManager->clearSelection();
+        m_selectionManager->setSelected(index, 1);
+        m_selectionManager->beginAnchoredSelection(index);
     }
-    return false;
 }
 
 bool KItemListController::inputMethodEvent(QInputMethodEvent* event)
@@ -138,18 +266,22 @@ bool KItemListController::inputMethodEvent(QInputMethodEvent* event)
 
 bool KItemListController::mousePressEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 {
-    const QPointF pos = transform.map(event->pos());
-    m_pressedIndex = m_view->itemAt(pos);
+    if (!m_view) {
+        return false;
+    }
+
+    m_pressedMousePos = transform.map(event->pos());
+    m_pressedIndex = m_view->itemAt(m_pressedMousePos);
 
-    if (m_view->isAboveExpansionToggle(m_pressedIndex, pos)) {
+    if (m_view->isAboveExpansionToggle(m_pressedIndex, m_pressedMousePos)) {
+        m_selectionManager->setCurrentItem(m_pressedIndex);
         return true;
     }
 
     const bool shiftPressed = event->modifiers() & Qt::ShiftModifier;
     const bool controlPressed = event->modifiers() & Qt::ControlModifier;
-    const bool shiftOrControlPressed = shiftPressed || controlPressed;
 
-    if (!shiftOrControlPressed || m_selectionBehavior == SingleSelection) {
+    if (m_selectionBehavior == SingleSelection) {
         m_selectionManager->clearSelection();
     }
 
@@ -163,29 +295,58 @@ bool KItemListController::mousePressEvent(QGraphicsSceneMouseEvent* event, const
 
         switch (m_selectionBehavior) {
         case NoSelection:
-            return true;
+            break;
+
         case SingleSelection:
             m_selectionManager->setSelected(m_pressedIndex);
-            return true;
+            break;
+
         case MultiSelection:
             if (controlPressed) {
                 m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Toggle);
                 m_selectionManager->beginAnchoredSelection(m_pressedIndex);
-            }
-            else {
-                if (shiftPressed && m_selectionManager->isAnchoredSelectionActive()) {
-                    // The anchored selection is continued automatically by calling
-                    // m_selectionManager->setCurrentItem(m_pressedIndex), see above -> nothing more to do here
-                    return true;
+            } else if (event->buttons() & Qt::RightButton) {
+                // Only clear the selection if a context menu is requested above a non-selected item
+                if (!m_selectionManager->selectedItems().contains(m_pressedIndex)) {
+                    m_selectionManager->setSelectedItems(QSet<int>() << m_pressedIndex);
                 }
-
+            } else if (!shiftPressed || !m_selectionManager->isAnchoredSelectionActive()) {
                 // Select the pressed item and start a new anchored selection
                 m_selectionManager->setSelected(m_pressedIndex, 1, KItemListSelectionManager::Select);
                 m_selectionManager->beginAnchoredSelection(m_pressedIndex);
             }
+            break;
+
+        default:
+            Q_ASSERT(false);
+            break;
         }
 
         return true;
+    } else {
+        if (event->buttons() & Qt::RightButton) {
+            m_selectionManager->clearSelection();
+        }
+
+        KItemListRubberBand* rubberBand = m_view->rubberBand();
+        QPointF startPos = m_pressedMousePos;
+        if (m_view->scrollOrientation() == Qt::Vertical) {
+            startPos.ry() += m_view->offset();
+            if (m_view->itemSize().width() < 0) {
+                // Use a special rubberband for views that have only one column and
+                // expand the rubberband to use the whole width of the view.
+                startPos.setX(0);
+            }
+        } else {
+            startPos.rx() += m_view->offset();
+        }
+
+        m_oldSelection = m_selectionManager->selectedItems();
+        rubberBand->setStartPosition(startPos);
+        rubberBand->setEndPosition(startPos);
+        rubberBand->setActive(true);
+        connect(rubberBand, SIGNAL(endPositionChanged(QPointF,QPointF)), this, SLOT(slotRubberBandChanged()));
+        m_view->setAutoScroll(true);
     }
 
     return false;
@@ -193,48 +354,115 @@ bool KItemListController::mousePressEvent(QGraphicsSceneMouseEvent* event, const
 
 bool KItemListController::mouseMoveEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 {
-    Q_UNUSED(event);
-    Q_UNUSED(transform);
+    if (!m_view) {
+        return false;
+    }
+
+    if (m_pressedIndex >= 0) {
+        // Check whether a dragging should be started
+        if (event->buttons() & Qt::LeftButton) {
+            const QPointF pos = transform.map(event->pos());
+            const qreal minDragDiff = 4;
+            const bool hasMinDragDiff = qAbs(pos.x() - m_pressedMousePos.x()) >= minDragDiff ||
+                                        qAbs(pos.y() - m_pressedMousePos.y()) >= minDragDiff;
+            if (hasMinDragDiff) {
+                startDragging();
+            }
+        }
+    } else {
+        KItemListRubberBand* rubberBand = m_view->rubberBand();
+        if (rubberBand->isActive()) {
+            QPointF endPos = transform.map(event->pos());
+            if (m_view->scrollOrientation() == Qt::Vertical) {
+                endPos.ry() += m_view->offset();
+                if (m_view->itemSize().width() < 0) {
+                    // Use a special rubberband for views that have only one column and
+                    // expand the rubberband to use the whole width of the view.
+                    endPos.setX(m_view->size().width());
+                }
+            } else {
+                endPos.rx() += m_view->offset();
+            }
+            rubberBand->setEndPosition(endPos);
+        }
+    }
+
     return false;
 }
 
 bool KItemListController::mouseReleaseEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 {
-    if (m_view) {
-        const QPointF pos = transform.map(event->pos());
-        const int index = m_view->itemAt(pos);
-        const bool shiftOrControlPressed = event->modifiers() & Qt::ShiftModifier || event->modifiers() & Qt::ControlModifier;
-
-        if (index >= 0 && index == m_pressedIndex) {
-            // The release event is done above the same item as the press event
-            bool emitItemClicked = true;
-            if (event->button() & Qt::LeftButton) {
-                if (m_view->isAboveExpansionToggle(index, pos)) {
-                    emit itemExpansionToggleClicked(index);
-                    emitItemClicked = false;
-                }
-                else if (shiftOrControlPressed) {
-                    // The mouse click should only update the selection, not trigger the item
-                    emitItemClicked = false;
-                }
-            }
+    if (!m_view) {
+        return false;
+    }
+
+    const bool shiftOrControlPressed = event->modifiers() & Qt::ShiftModifier ||
+                                       event->modifiers() & Qt::ControlModifier;
+
+    bool clearSelection = !shiftOrControlPressed && event->button() != Qt::RightButton;
 
-            if (emitItemClicked) {
-                emit itemClicked(index, event->button());
+    KItemListRubberBand* rubberBand = m_view->rubberBand();
+    if (rubberBand->isActive()) {
+        disconnect(rubberBand, SIGNAL(endPositionChanged(QPointF,QPointF)), this, SLOT(slotRubberBandChanged()));
+        rubberBand->setActive(false);
+        m_oldSelection.clear();
+        m_view->setAutoScroll(false);
+
+        if (rubberBand->startPosition() != rubberBand->endPosition()) {
+            clearSelection = false;
+        }
+    }
+
+    const QPointF pos = transform.map(event->pos());
+    const int index = m_view->itemAt(pos);
+
+    if (index >= 0 && index == m_pressedIndex) {
+        // The release event is done above the same item as the press event
+
+        if (clearSelection) {
+            // Clear the previous selection but reselect the current index
+            m_selectionManager->setSelectedItems(QSet<int>() << index);
+        }
+
+        if (event->button() & Qt::LeftButton) {
+            bool emitItemActivated = true;
+            if (m_view->isAboveExpansionToggle(index, pos)) {
+                emit itemExpansionToggleClicked(index);
+                emitItemActivated = false;
+            } else if (shiftOrControlPressed) {
+                // The mouse click should only update the selection, not trigger the item
+                emitItemActivated = false;
+            } else if (!KGlobalSettings::singleClick()) {
+                emitItemActivated = false;
             }
-        } else if (!shiftOrControlPressed) {
-            m_selectionManager->clearSelection();
+            if (emitItemActivated) {
+                emit itemActivated(index);
+            }
+        } else if (event->button() & Qt::MidButton) {
+            emit itemMiddleClicked(index);
+        } else if (event->button() & Qt::RightButton) {
+            emit contextMenuRequested(index, QPointF(event->pos()));
         }
+    } else if (clearSelection) {
+        m_selectionManager->clearSelection();
     }
 
+    m_pressedMousePos = QPointF();
     m_pressedIndex = -1;
     return false;
 }
 
 bool KItemListController::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
 {
-    Q_UNUSED(event);
-    Q_UNUSED(transform);
+    const QPointF pos = transform.map(event->pos());
+    const int index = m_view->itemAt(pos);
+
+    bool emitItemActivated = !KGlobalSettings::singleClick() &&
+                           (event->button() & Qt::LeftButton) &&
+                           index >= 0 && index < m_model->count();
+    if (emitItemActivated) {
+        emit itemActivated(index);
+    }
     return false;
 }
 
@@ -254,16 +482,43 @@ bool KItemListController::dragLeaveEvent(QGraphicsSceneDragDropEvent* event, con
 
 bool KItemListController::dragMoveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 {
-    Q_UNUSED(event);
     Q_UNUSED(transform);
+    if (!m_model || !m_view) {
+        return false;
+    }
+
+    KItemListWidget* oldHoveredWidget = hoveredWidget();
+    KItemListWidget* newHoveredWidget = widgetForPos(event->pos());
+    if (oldHoveredWidget != newHoveredWidget) {
+        if (oldHoveredWidget) {
+            oldHoveredWidget->setHovered(false);
+            emit itemUnhovered(oldHoveredWidget->index());
+        }
+
+        if (newHoveredWidget) {
+            const int index = newHoveredWidget->index();
+            if (m_model->supportsDropping(index)) {
+                newHoveredWidget->setHovered(true);
+            }
+            emit itemHovered(index);
+        }
+    }
+
     return false;
 }
 
 bool KItemListController::dropEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
 {
-    Q_UNUSED(event);
-    Q_UNUSED(transform);
-    return false;
+    Q_UNUSED(transform)
+    if (!m_view) {
+        return false;
+    }
+
+    const QPointF pos = transform.map(event->pos());
+    const int index = m_view->itemAt(pos);
+    emit itemDropEvent(index, event);
+
+    return true;
 }
 
 bool KItemListController::hoverEnterEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
@@ -275,46 +530,22 @@ bool KItemListController::hoverEnterEvent(QGraphicsSceneHoverEvent* event, const
 
 bool KItemListController::hoverMoveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
 {
-    // The implementation assumes that only one item can get hovered no matter
-    // whether they overlap or not.
-
     Q_UNUSED(transform);
     if (!m_model || !m_view) {
         return false;
     }
 
-    // Search the previously hovered item that might get unhovered
-    KItemListWidget* unhoveredWidget = 0;
-    foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
-        if (widget->isHovered()) {
-            unhoveredWidget = widget;
-            break;
-        }
-    }
-
-    // Search the currently hovered item
-    KItemListWidget* hoveredWidget = 0;
-    foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
-        const QPointF mappedPos = widget->mapFromItem(m_view, event->pos());
-
-        const bool hovered = widget->contains(mappedPos) &&
-                             !widget->expansionToggleRect().contains(mappedPos) &&
-                             !widget->selectionToggleRect().contains(mappedPos);
-        if (hovered) {
-            hoveredWidget = widget;
-            break;
-        }
-    }
-
-    if (unhoveredWidget != hoveredWidget) {
-        if (unhoveredWidget) {
-            unhoveredWidget->setHovered(false);
-            emit itemUnhovered(unhoveredWidget->index());
+    KItemListWidget* oldHoveredWidget = hoveredWidget();
+    KItemListWidget* newHoveredWidget = widgetForPos(event->pos());
+    if (oldHoveredWidget != newHoveredWidget) {
+        if (oldHoveredWidget) {
+            oldHoveredWidget->setHovered(false);
+            emit itemUnhovered(oldHoveredWidget->index());
         }
 
-        if (hoveredWidget) {
-            hoveredWidget->setHovered(true);
-            emit itemHovered(hoveredWidget->index());
+        if (newHoveredWidget) {
+            newHoveredWidget->setHovered(true);
+            emit itemHovered(newHoveredWidget->index());
         }
     }
 
@@ -370,6 +601,8 @@ bool KItemListController::processEvent(QEvent* event, const QTransform& transfor
         return mouseMoveEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
     case QEvent::GraphicsSceneMouseRelease:
         return mouseReleaseEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
+    case QEvent::GraphicsSceneMouseDoubleClick:
+        return mouseDoubleClickEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
     case QEvent::GraphicsSceneWheel:
          return wheelEvent(static_cast<QGraphicsSceneWheelEvent*>(event), QTransform());
     case QEvent::GraphicsSceneDragEnter:
@@ -395,4 +628,165 @@ bool KItemListController::processEvent(QEvent* event, const QTransform& transfor
     return false;
 }
 
+void KItemListController::slotViewOffsetChanged(qreal current, qreal previous)
+{
+    if (!m_view) {
+        return;
+    }
+
+    KItemListRubberBand* rubberBand = m_view->rubberBand();
+    if (rubberBand->isActive()) {
+        const qreal diff = current - previous;
+        // TODO: Ideally just QCursor::pos() should be used as
+        // new end-position but it seems there is no easy way
+        // to have something like QWidget::mapFromGlobal() for QGraphicsWidget
+        // (... or I just missed an easy way to do the mapping)
+        QPointF endPos = rubberBand->endPosition();
+        if (m_view->scrollOrientation() == Qt::Vertical) {
+            endPos.ry() += diff;
+        } else {
+            endPos.rx() += diff;
+        }
+
+        rubberBand->setEndPosition(endPos);
+    }
+}
+
+void KItemListController::slotRubberBandChanged()
+{
+    if (!m_view || !m_model || m_model->count() <= 0) {
+        return;
+    }
+
+    const KItemListRubberBand* rubberBand = m_view->rubberBand();
+    const QPointF startPos = rubberBand->startPosition();
+    const QPointF endPos = rubberBand->endPosition();
+    QRectF rubberBandRect = QRectF(startPos, endPos).normalized();
+
+    const bool scrollVertical = (m_view->scrollOrientation() == Qt::Vertical);
+    if (scrollVertical) {
+        rubberBandRect.translate(0, -m_view->offset());
+    } else {
+        rubberBandRect.translate(-m_view->offset(), 0);
+    }
+
+    if (!m_oldSelection.isEmpty()) {
+        // Clear the old selection that was available before the rubberband has
+        // been activated in case if no Shift- or Control-key are pressed
+        const bool shiftOrControlPressed = QApplication::keyboardModifiers() & Qt::ShiftModifier ||
+                                           QApplication::keyboardModifiers() & Qt::ControlModifier;
+        if (!shiftOrControlPressed) {
+            m_oldSelection.clear();
+        }
+    }
+
+    QSet<int> selectedItems;
+
+    // Select all visible items that intersect with the rubberband
+    foreach (const KItemListWidget* widget, m_view->visibleItemListWidgets()) {
+        const int index = widget->index();
+
+        const QRectF widgetRect = m_view->itemBoundingRect(index);
+        if (widgetRect.intersects(rubberBandRect)) {
+            const QRectF iconRect = widget->iconBoundingRect().translated(widgetRect.topLeft());
+            const QRectF textRect = widget->textBoundingRect().translated(widgetRect.topLeft());
+            if (iconRect.intersects(rubberBandRect) || textRect.intersects(rubberBandRect)) {
+                selectedItems.insert(index);
+            }
+        }
+    }
+
+    // Select all invisible items that intersect with the rubberband. Instead of
+    // iterating all items only the area which might be touched by the rubberband
+    // will be checked.
+    const bool increaseIndex = scrollVertical ?
+                               startPos.y() > endPos.y(): startPos.x() > endPos.x();
+
+    int index = increaseIndex ? m_view->lastVisibleIndex() + 1 : m_view->firstVisibleIndex() - 1;
+    bool selectionFinished = false;
+    do {
+        const QRectF widgetRect = m_view->itemBoundingRect(index);
+        if (widgetRect.intersects(rubberBandRect)) {
+            selectedItems.insert(index);
+        }
+
+        if (increaseIndex) {
+            ++index;
+            selectionFinished = (index >= m_model->count()) ||
+                                ( scrollVertical && widgetRect.top()  > rubberBandRect.bottom()) ||
+                                (!scrollVertical && widgetRect.left() > rubberBandRect.right());
+        } else {
+            --index;
+            selectionFinished = (index < 0) ||
+                                ( scrollVertical && widgetRect.bottom() < rubberBandRect.top()) ||
+                                (!scrollVertical && widgetRect.right()  < rubberBandRect.left());
+        }
+    } while (!selectionFinished);
+
+    if (QApplication::keyboardModifiers() & Qt::ControlModifier) {
+        // If Control is pressed, the selection state of all items in the rubberband is toggled.
+        // Therefore, the new selection contains:
+        // 1. All previously selected items which are not inside the rubberband, and
+        // 2. all items inside the rubberband which have not been selected previously.
+        m_selectionManager->setSelectedItems((m_oldSelection - selectedItems) + (selectedItems - m_oldSelection));
+    }
+    else {
+        m_selectionManager->setSelectedItems(selectedItems + m_oldSelection);
+    }
+}
+
+void KItemListController::startDragging()
+{
+    if (!m_view || !m_model) {
+        return;
+    }
+
+    const QSet<int> selectedItems = m_selectionManager->selectedItems();
+    QMimeData* data = m_model->createMimeData(selectedItems);
+    if (!data) {
+        return;
+    }
+
+    // The created drag object will be owned and deleted
+    // by QApplication::activeWindow().
+    QDrag* drag = new QDrag(QApplication::activeWindow());
+    drag->setMimeData(data);
+
+    const QPixmap pixmap = m_view->createDragPixmap(selectedItems);
+    drag->setPixmap(pixmap);
+
+    drag->exec(Qt::MoveAction | Qt::CopyAction | Qt::LinkAction, Qt::IgnoreAction);
+}
+
+KItemListWidget* KItemListController::hoveredWidget() const
+{
+    Q_ASSERT(m_view);
+
+    foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
+        if (widget->isHovered()) {
+            return widget;
+        }
+    }
+
+    return 0;
+}
+
+KItemListWidget* KItemListController::widgetForPos(const QPointF& pos) const
+{
+    Q_ASSERT(m_view);
+
+    foreach (KItemListWidget* widget, m_view->visibleItemListWidgets()) {
+        const QPointF mappedPos = widget->mapFromItem(m_view, pos);
+
+        const bool hovered = widget->contains(mappedPos) &&
+                             !widget->expansionToggleRect().contains(mappedPos) &&
+                             !widget->selectionToggleRect().contains(mappedPos);
+        if (hovered) {
+            return widget;
+        }
+    }
+
+    return 0;
+}
+
 #include "kitemlistcontroller.moc"