Merge remote-tracking branch 'qt/4.8'

Conflicts:
	doc/src/examples/wheel.qdoc
	src/gui/util/qflickgesture.cpp
	src/gui/util/qflickgesture_p.h
	src/gui/util/qscroller.cpp
	src/gui/util/qscroller.h
	src/gui/util/qscroller_p.h
	src/gui/util/qscrollerproperties.cpp
	src/gui/util/qscrollerproperties.h
	tests/auto/qscroller/tst_qscroller.cpp

1 files changed, 10 insertions, 4 deletions

diff --git a/src/declarative/graphicsitems/qdeclarativelistview.cpp b/src/declarative/graphicsitems/qdeclarativelistview.cpp
index 0757419..b52b6fc 100644
--- a/src/declarative/graphicsitems/qdeclarativelistview.cpp
+++ b/src/declarative/graphicsitems/qdeclarativelistview.cpp
@@ -733,6 +733,7 @@ void QDeclarativeListViewPrivate::refill(qreal from, qreal to, bool doBuffer)
     if (doBuffer && (bufferMode & BufferBefore))
         fillFrom = bufferFrom;
 
+    bool haveValidItems = false;
     int modelIndex = visibleIndex;
     qreal itemEnd = visiblePos-1;
     if (!visibleItems.isEmpty()) {
@@ -741,11 +742,13 @@ void QDeclarativeListViewPrivate::refill(qreal from, qreal to, bool doBuffer)
         int i = visibleItems.count() - 1;
         while (i > 0 && visibleItems.at(i)->index == -1)
             --i;
-        if (visibleItems.at(i)->index != -1)
+        if (visibleItems.at(i)->index != -1) {
+            haveValidItems = true;
             modelIndex = visibleItems.at(i)->index + 1;
+        }
     }
 
-    if (visibleItems.count() && (fillFrom > itemEnd+averageSize+spacing
+    if (haveValidItems && (fillFrom > itemEnd+averageSize+spacing
         || fillTo < visiblePos - averageSize - spacing)) {
         // We've jumped more than a page.  Estimate which items are now
         // visible and fill from there.
@@ -1813,6 +1816,7 @@ void QDeclarativeListView::setDelegate(QDeclarativeComponent *delegate)
         d->ownModel = true;
     }
     if (QDeclarativeVisualDataModel *dataModel = qobject_cast<QDeclarativeVisualDataModel*>(d->model)) {
+        int oldCount = dataModel->count();
         dataModel->setDelegate(delegate);
         if (isComponentComplete()) {
             for (int i = 0; i < d->visibleItems.count(); ++i)
@@ -1831,6 +1835,8 @@ void QDeclarativeListView::setDelegate(QDeclarativeComponent *delegate)
             }
             d->updateViewport();
         }
+        if (oldCount != dataModel->count())
+            emit countChanged();
     }
     emit delegateChanged();
 }
@@ -3403,9 +3409,9 @@ void QDeclarativeListView::itemsRemoved(int modelIndex, int count)
         }
     }
 
-    if (removedVisible && !haveVisibleIndex) {
+    if (!haveVisibleIndex) {
         d->timeline.clear();
-        if (d->itemCount == 0) {
+        if (removedVisible && d->itemCount == 0) {
             d->visibleIndex = 0;
             d->visiblePos = d->header ? d->header->size() : 0;
             d->setPosition(0);