Method containsValidTree

bt_editor/graphic_container.cpp:182–226

}

bool GraphicContainer::containsValidTree() const
{
    if( _scene->nodes().empty())
    {
        return false;
    }

    auto connections =  _scene->connections();

    std::set<const QtNodes::Node*> nodes_with_input;
    std::set<const QtNodes::Node*> nodes_with_output;

    for (const auto& it: _scene->connections())
    {
        const QtNodes::Connection* connection = it.second.get();
        auto node = connection->getNode( QtNodes::PortType::In);
        if( node ){
            nodes_with_input.insert( node );
        }
        node = connection->getNode( QtNodes::PortType::Out);
        if( node ){
            nodes_with_output.insert( node );
        }
    }

    for (const auto& it: _scene->nodes())
    {
        const QtNodes::Node* node = it.second.get();
        if( node->nodeDataModel()->nPorts(QtNodes::PortType::In) == 1 )
        {
            if( nodes_with_input.find(node) == nodes_with_input.end() )
            {
                return false;
            }
        }
        if( node->nodeDataModel()->nPorts(QtNodes::PortType::Out) == 1 )
        {
            if( nodes_with_output.find(node) == nodes_with_output.end() )
            {
                return false;
            }
        }
    }
    return true;
}

void GraphicContainer::clearScene()
{