+
+ // ensure that newly inserted network nodes are expanded per default
+ if(parent.data(NetworkModel::ItemTypeRole) != NetworkModel::NetworkItemType)
+ return;
+
+ setExpandedState(parent);
+}
+
+void BufferView::on_layoutChanged() {
+ int numNets = model()->rowCount(QModelIndex());
+ for(int row = 0; row < numNets; row++) {
+ QModelIndex networkIdx = model()->index(row, 0, QModelIndex());
+ setExpandedState(networkIdx);
+ }
+}
+
+void BufferView::on_configChanged() {
+ Q_ASSERT(model());
+
+ // expand all active networks... collapse inactive ones... unless manually changed
+ QModelIndex networkIdx;
+ NetworkId networkId;
+ for(int row = 0; row < model()->rowCount(); row++) {
+ networkIdx = model()->index(row, 0);
+ if(model()->rowCount(networkIdx) == 0)
+ continue;
+
+ networkId = model()->data(networkIdx, NetworkModel::NetworkIdRole).value<NetworkId>();
+ if(!networkId.isValid())
+ continue;
+
+ setExpandedState(networkIdx);
+ }
+
+ if(config()) {
+ // update selection to current one
+ Client::bufferModel()->synchronizeView(this);
+ }
+}
+
+void BufferView::storeExpandedState(const QModelIndex &networkIdx) {
+ NetworkId networkId = model()->data(networkIdx, NetworkModel::NetworkIdRole).value<NetworkId>();
+
+ int oldState = 0;
+ if(isExpanded(networkIdx))
+ oldState |= WasExpanded;
+ if(model()->data(networkIdx, NetworkModel::ItemActiveRole).toBool())
+ oldState |= WasActive;
+
+ _expandedState[networkId] = oldState;
+}
+
+void BufferView::setExpandedState(const QModelIndex &networkIdx) {
+ if(model()->data(networkIdx, NetworkModel::ItemTypeRole) != NetworkModel::NetworkItemType)
+ return;
+
+ if(model()->rowCount(networkIdx) == 0)
+ return;
+
+ NetworkId networkId = model()->data(networkIdx, NetworkModel::NetworkIdRole).value<NetworkId>();
+
+ bool networkActive = model()->data(networkIdx, NetworkModel::ItemActiveRole).toBool();
+ bool expandNetwork = networkActive;
+ if(_expandedState.contains(networkId)) {
+ int oldState = _expandedState[networkId];
+ if((bool)(oldState & WasActive) == networkActive)
+ expandNetwork = (bool)(oldState & WasExpanded);
+ }
+
+ if(expandNetwork != isExpanded(networkIdx)) {
+ update(networkIdx);
+ setExpanded(networkIdx, expandNetwork);
+ }
+ storeExpandedState(networkIdx); // this call is needed to keep track of the isActive state
+}
+
+void BufferView::dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight) {
+ QTreeView::dataChanged(topLeft, bottomRight);
+
+ // determine how many items have been changed and if any of them is a networkitem
+ // which just swichted from active to inactive or vice versa
+ if(topLeft.data(NetworkModel::ItemTypeRole) != NetworkModel::NetworkItemType)
+ return;
+
+ for(int i = topLeft.row(); i <= bottomRight.row(); i++) {
+ QModelIndex networkIdx = topLeft.sibling(i, 0);
+ setExpandedState(networkIdx);