-QModelIndex TreeModel::indexById(uint id, const QModelIndex &parent) const {
- AbstractTreeItem *parentItem;
-
- if(!parent.isValid())
- parentItem = rootItem;
- else
- parentItem = static_cast<AbstractTreeItem *>(parent.internalPointer());
-
- AbstractTreeItem *childItem = parentItem->childById(parent.column(), id);
-
- if(childItem)
- return createIndex(childItem->row(), 0, childItem);
- else
- return QModelIndex();
-}
-
-QModelIndex TreeModel::indexByItem(AbstractTreeItem *item) const {
- if(item == 0) {
- qWarning() << "TreeModel::indexByItem(AbstractTreeItem *item) received NULL-Pointer";
- return QModelIndex();
- }
-
- if(item == rootItem)
- return QModelIndex();
- else
- return createIndex(item->row(), 0, item);
-
-}
-
-QModelIndex TreeModel::parent(const QModelIndex &index) const {
- if(!index.isValid())
- return QModelIndex();
-
- AbstractTreeItem *childItem = static_cast<AbstractTreeItem *>(index.internalPointer());
- AbstractTreeItem *parentItem = static_cast<AbstractTreeItem *>(childItem->parent());
-
- if(parentItem == rootItem)
- return QModelIndex();
-
- return createIndex(parentItem->row(), 0, parentItem);
-}
-
-int TreeModel::rowCount(const QModelIndex &parent) const {
- AbstractTreeItem *parentItem;
- if(!parent.isValid())
- parentItem = rootItem;
- else
- parentItem = static_cast<AbstractTreeItem*>(parent.internalPointer());
-
- return parentItem->childCount(parent.column());
-}
-
-int TreeModel::columnCount(const QModelIndex &parent) const {
- if(parent.isValid())
- return static_cast<AbstractTreeItem*>(parent.internalPointer())->columnCount();
- else
- return rootItem->columnCount();
+
+void TreeModel::endAppendChilds()
+{
+ AbstractTreeItem *parentItem = qobject_cast<AbstractTreeItem *>(sender());
+ if (!parentItem) {
+ qWarning() << "TreeModel::endAppendChilds(): cannot append Children to unknown parent";
+ return;
+ }
+ Q_ASSERT(_aboutToRemoveOrInsert);
+ ChildStatus cs = _childStatus;
+#ifndef QT_NO_DEBUG
+ QModelIndex parent = indexByItem(parentItem);
+ Q_ASSERT(cs.parent == parent);
+ Q_ASSERT(rowCount(parent) == cs.childCount + cs.end - cs.start + 1);
+#endif
+ _aboutToRemoveOrInsert = false;
+ for (int i = cs.start; i <= cs.end; i++) {
+ connectItem(parentItem->child(i));
+ }
+ endInsertRows();
+}
+
+
+void TreeModel::beginRemoveChilds(int firstRow, int lastRow)
+{
+ AbstractTreeItem *parentItem = qobject_cast<AbstractTreeItem *>(sender());
+ if (!parentItem) {
+ qWarning() << "TreeModel::beginRemoveChilds(): cannot append Children to unknown parent";
+ return;
+ }
+
+ for (int i = firstRow; i <= lastRow; i++) {
+ disconnect(parentItem->child(i), 0, this, 0);
+ }
+
+ // consitency checks
+ QModelIndex parent = indexByItem(parentItem);
+ Q_ASSERT(firstRow <= lastRow);
+ Q_ASSERT(parentItem->childCount() > lastRow);
+ Q_ASSERT(!_aboutToRemoveOrInsert);
+ _aboutToRemoveOrInsert = true;
+ _childStatus = ChildStatus(parent, rowCount(parent), firstRow, lastRow);
+
+ beginRemoveRows(parent, firstRow, lastRow);