Models which load incrementally via fetchMore() don't work.

Call canFetchMore()/fetchMore() on setModel(), setRootIndex() and when
the last item is created.

Task-number: QTBUG-16039
Reviewed-by: Bea Lam

1 files changed, 6 insertions, 0 deletions

diff --git a/src/declarative/graphicsitems/qdeclarativevisualitemmodel.cpp b/src/declarative/graphicsitems/qdeclarativevisualitemmodel.cpp
index 4f5213a..bf9263b 100644
--- a/src/declarative/graphicsitems/qdeclarativevisualitemmodel.cpp
+++ b/src/declarative/graphicsitems/qdeclarativevisualitemmodel.cpp
@@ -773,6 +773,8 @@ void QDeclarativeVisualDataModel::setModel(const QVariant &model)
         QObject::connect(d->m_abstractItemModel, SIGNAL(modelReset()), this, SLOT(_q_modelReset()));
         QObject::connect(d->m_abstractItemModel, SIGNAL(layoutChanged()), this, SLOT(_q_layoutChanged()));
         d->m_metaDataCacheable = true;
+        if (d->m_abstractItemModel->canFetchMore(d->m_root))
+            d->m_abstractItemModel->fetchMore(d->m_root);
         return;
     }
     if ((d->m_visualItemModel = qvariant_cast<QDeclarativeVisualDataModel *>(model))) {
@@ -870,6 +872,8 @@ void QDeclarativeVisualDataModel::setRootIndex(const QVariant &root)
     if (d->m_root != modelIndex) {
         int oldCount = d->modelCount();
         d->m_root = modelIndex;
+        if (d->m_abstractItemModel && d->m_abstractItemModel->canFetchMore(modelIndex))
+            d->m_abstractItemModel->fetchMore(modelIndex);
         int newCount = d->modelCount();
         if (d->m_delegate && oldCount)
             emit itemsRemoved(0, oldCount);
@@ -1094,6 +1098,8 @@ QDeclarativeItem *QDeclarativeVisualDataModel::item(int index, const QByteArray
             d->m_delegateValidated = true;
         }
     }
+    if (d->modelCount()-1 == index && d->m_abstractItemModel && d->m_abstractItemModel->canFetchMore(d->m_root))
+        d->m_abstractItemModel->fetchMore(d->m_root);
 
     return item;
 }