+
+void BufferView::keyPressEvent(QKeyEvent *event)
+{
+ if (event->key() == Qt::Key_Backspace || event->key() == Qt::Key_Delete) {
+ event->accept();
+ removeSelectedBuffers();
+ }
+ TreeViewTouch::keyPressEvent(event);
+}
+
+
+void BufferView::dropEvent(QDropEvent *event)
+{
+ QModelIndex index = indexAt(event->pos());
+
+ QRect indexRect = visualRect(index);
+ QPoint cursorPos = event->pos();
+
+ // check if we're really _on_ the item and not indicating a move to just above or below the item
+ // Magic margin number for this is from QAbstractItemViewPrivate::position()
+ const int margin = 2;
+ if (cursorPos.y() - indexRect.top() < margin
+ || indexRect.bottom() - cursorPos.y() < margin)
+ return TreeViewTouch::dropEvent(event);
+
+ // If more than one buffer was being dragged, treat this as a rearrangement instead of a merge request
+ QList<QPair<NetworkId, BufferId> > bufferList = Client::networkModel()->mimeDataToBufferList(event->mimeData());
+ if (bufferList.count() != 1)
+ return TreeViewTouch::dropEvent(event);
+
+ // Get the Buffer ID of the buffer that was being dragged
+ BufferId bufferId2 = bufferList[0].second;
+
+ // Get the Buffer ID of the target buffer
+ BufferId bufferId1 = index.data(NetworkModel::BufferIdRole).value<BufferId>();
+
+ // If the source and target are the same buffer, this was an aborted rearrangement
+ if (bufferId1 == bufferId2)
+ return TreeViewTouch::dropEvent(event);
+
+ // Get index of buffer that was being dragged
+ QModelIndex index2 = Client::networkModel()->bufferIndex(bufferId2);
+
+ // If the buffer being dragged is a channel and we're still joined to it, treat this as a rearrangement
+ // This prevents us from being joined to a channel with no associated UI elements
+ if (index2.data(NetworkModel::BufferTypeRole) == BufferInfo::ChannelBuffer && index2.data(NetworkModel::ItemActiveRole) == true)
+ return TreeViewTouch::dropEvent(event);
+
+ //If the source buffer is not mergeable(AKA not a Channel and not a Query), try rearranging instead
+ if (index2.data(NetworkModel::BufferTypeRole) != BufferInfo::ChannelBuffer && index2.data(NetworkModel::BufferTypeRole) != BufferInfo::QueryBuffer)
+ return TreeViewTouch::dropEvent(event);
+
+ // If the target buffer is not mergeable(AKA not a Channel and not a Query), try rearranging instead
+ if (index.data(NetworkModel::BufferTypeRole) != BufferInfo::ChannelBuffer && index.data(NetworkModel::BufferTypeRole) != BufferInfo::QueryBuffer)
+ return TreeViewTouch::dropEvent(event);
+
+ // Confirm that the user really wants to merge the buffers before doing so
+ int res = QMessageBox::question(0, tr("Merge buffers permanently?"),
+ tr("Do you want to merge the buffer \"%1\" permanently into buffer \"%2\"?\n This cannot be reversed!").arg(Client::networkModel()->bufferName(bufferId2)).arg(Client::networkModel()->bufferName(bufferId1)),
+ QMessageBox::Yes|QMessageBox::No, QMessageBox::No);
+ if (res == QMessageBox::Yes) {
+ Client::mergeBuffersPermanently(bufferId1, bufferId2);
+ }
+}
+
+
+void BufferView::removeSelectedBuffers(bool permanently)
+{
+ if (!config())
+ return;
+
+ BufferId bufferId;
+ QSet<BufferId> removedRows;
+ foreach(QModelIndex index, selectionModel()->selectedIndexes()) {
+ if (index.data(NetworkModel::ItemTypeRole) != NetworkModel::BufferItemType)
+ continue;
+
+ bufferId = index.data(NetworkModel::BufferIdRole).value<BufferId>();
+ if (removedRows.contains(bufferId))
+ continue;
+
+ removedRows << bufferId;
+ }
+
+ foreach(BufferId bufferId, removedRows) {
+ if (permanently)
+ config()->requestRemoveBufferPermanently(bufferId);
+ else
+ config()->requestRemoveBuffer(bufferId);
+ }
+}
+
+
+void BufferView::rowsInserted(const QModelIndex &parent, int start, int end)
+{
+ TreeViewTouch::rowsInserted(parent, start, end);
+
+ // 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/collapse as needed
+ setExpandedState();
+
+ if (config()) {
+ // update selection to current one
+ Client::bufferModel()->synchronizeView(this);
+ }
+}
+
+
+void BufferView::setExpandedState()
+{
+ // 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);
+ }
+}
+
+
+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
+}
+
+#if QT_VERSION < 0x050000
+void BufferView::dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight)
+{
+ TreeViewTouch::dataChanged(topLeft, bottomRight);