Enable basic drag and drop support for the Places Panel

[dolphin.git] / src / kitemviews / kitemlistview.cpp

diff --git a/src/kitemviews/kitemlistview.cpp b/src/kitemviews/kitemlistview.cpp
index d1d8749aa851f20733808d3d575cc279d9a2c14d..ebcf48680388b28512b304b31d2be84afc0d82a7 100644 (file)
--- a/src/kitemviews/kitemlistview.cpp
+++ b/src/kitemviews/kitemlistview.cpp
@@ -36,6 +36,7 @@
 
 #include <QCursor>
 #include <QGraphicsSceneMouseEvent>
+#include <QGraphicsView>
 #include <QPainter>
 #include <QPropertyAnimation>
 #include <QStyle>
@@ -566,8 +567,21 @@ KItemListHeader* KItemListView::header() const
 
 QPixmap KItemListView::createDragPixmap(const QSet<int>& indexes) const
 {
-    Q_UNUSED(indexes);
-    return QPixmap();
+    QPixmap pixmap;
+
+    if (indexes.count() == 1) {
+        KItemListWidget* item = m_visibleItems.value(indexes.toList().first());
+        QGraphicsView* graphicsView = scene()->views()[0];
+        if (item && graphicsView) {
+            pixmap = item->createDragPixmap(0, graphicsView);
+        }
+    } else {
+        // TODO: Not implemented yet. Probably extend the interface
+        // from KItemListWidget::createDragPixmap() to return a pixmap
+        // that can be used for multiple indexes.
+    }
+
+    return pixmap;
 }
 
 void KItemListView::editRole(int index, const QByteArray& role)
@@ -922,13 +936,6 @@ void KItemListView::slotItemsInserted(const KItemRangeList& itemRanges)
             }
         }
 
-        // In case if items of the same group have been inserted before an item that
-        // currently represents the first item of the group, the group header of
-        // this item must be removed.
-        if (m_grouped && index + count < m_model->count()) {
-            updateGroupHeaderForWidget(m_visibleItems.value(index + count));
-        }
-
         if (m_model->count() == count && m_activeTransactions == 0) {
             // Check whether a scrollbar is required to show the inserted items. In this case
             // the size of the layouter will be decreased before calling doLayout(): This prevents
@@ -967,9 +974,17 @@ void KItemListView::slotItemsInserted(const KItemRangeList& itemRanges)
 #endif
         m_endTransactionAnimationHint = NoAnimation;
         endTransaction();
+
         updateSiblingsInformation();
     }
 
+    if (m_grouped && (hasMultipleRanges || itemRanges.first().count < m_model->count())) {
+        // In case if items of the same group have been inserted before an item that
+        // currently represents the first item of the group, the group header of
+        // this item must be removed.
+        updateVisibleGroupHeaders();
+    }
+
     if (useAlternateBackgrounds()) {
         updateAlternateBackgrounds();
     }
@@ -1056,12 +1071,6 @@ void KItemListView::slotItemsRemoved(const KItemRangeList& itemRanges)
             }
         }
 
-        // In case if the first item of a group has been removed, the group header
-        // must be applied to the next visible item.
-        if (m_grouped && index < m_model->count()) {
-            updateGroupHeaderForWidget(m_visibleItems.value(index));
-        }
-
         if (!hasMultipleRanges) {
             // The decrease-layout-size optimization in KItemListView::slotItemsInserted()
             // assumes an updated geometry. If items are removed during an active transaction,
@@ -1091,6 +1100,12 @@ void KItemListView::slotItemsRemoved(const KItemRangeList& itemRanges)
         updateSiblingsInformation();
     }
 
+    if (m_grouped && (hasMultipleRanges || m_model->count() > 0)) {
+        // In case if the first item of a group has been removed, the group header
+        // must be applied to the next visible item.
+        updateVisibleGroupHeaders();
+    }
+
     if (useAlternateBackgrounds()) {
         updateAlternateBackgrounds();
     }