void HierarchyTreeControl::HandleDropHierarchyMimeData(QDropEvent *event, const HierarchyTreeControlMimeData* mimeData)
{
HierarchyTreeNode::HIERARCHYTREENODEID insertInTo = HierarchyTreeNode::HIERARCHYTREENODEID_EMPTY;
HierarchyTreeNode::HIERARCHYTREENODEID insertAfter = HierarchyTreeNode::HIERARCHYTREENODEID_EMPTY;
if (!GetMoveItemID(event, insertInTo, insertAfter))
return;
HierarchyTreeNode* parentNode = HierarchyTreeController::Instance()->GetTree().GetNode(insertInTo);
if (!parentNode)
{
parentNode = (HierarchyTreeNode*) HierarchyTreeController::Instance()->GetTree().GetRootNode();
insertInTo = parentNode->GetId();
}
if (!mimeData->IsDropEnable(parentNode))
{
return;
}
//Copy current selected item(s) if ctrl key is pressed during drag
if (event->keyboardModifiers() == Qt::ControlModifier)
{
CopyPasteController::Instance()->CopyControls(HierarchyTreeController::Instance()->GetActiveControlNodes());
CopyPasteController::Instance()->Paste(parentNode);
}
else //Otherwise move item(s)
{
HierarchyTreeNode::HIERARCHYTREENODESIDLIST items = mimeData->GetItems();
ChangeNodeHeirarchy* cmd = new ChangeNodeHeirarchy(insertInTo, insertAfter, items);
CommandsController::Instance()->ExecuteCommand(cmd);
SafeRelease(cmd);
}
}
void ChangeNodeHeirarchy::StorePreviousParents()
{
for (HierarchyTreeNode::HIERARCHYTREENODESIDLIST::iterator iter = items.begin();
iter != items.end();
++iter)
{
HierarchyTreeNode* node = HierarchyTreeController::Instance()->GetTree().GetNode((*iter));
if (!node)
{
continue;
}
HierarchyTreeNode* parentNode = node->GetParent();
if (!parentNode)
{
continue;
}
HierarchyTreeNode::HIERARCHYTREENODEID addAfter = HierarchyTreeNode::HIERARCHYTREENODEID_EMPTY;
HierarchyTreeNode::HIERARCHYTREENODEID lastId = HierarchyTreeNode::HIERARCHYTREENODEID_EMPTY;
const HierarchyTreeNode::HIERARCHYTREENODESLIST& childs = parentNode->GetChildNodes();
for (HierarchyTreeNode::HIERARCHYTREENODESLIST::const_iterator citer = childs.begin();
citer != childs.end();
++citer)
{
if (node == (*citer))
addAfter = lastId;
lastId = (*citer)->GetId();
}
// The Previous Parents are stored in the "item ID - parent ID" map.
this->previousParents.insert(std::make_pair(*iter, PreviousState(parentNode->GetId(), addAfter)));
}
}