/**
* (Re-)Adds the ports to the node of a component, having at least one port with a non-loop edge.
* The ports are added as the direct neighbor of a port they are connected to via an edge.
*
* @param component The component whose ports have to get re-added.
*/
public void addComponentWithNonLoopEdges(final ConnectedSelfLoopComponent component) {
// the node we are working on
final LNode node = component.getNode();
// Set of all ports of the components that are hidden. Initially all ports that CAN be hidden.
final Set<LPort> hiddenPorts = Sets.newHashSet(component.getHidablePorts());
// Iterator holding all ports that already have a portSide specified. Initially these are
// all ports with an non-loop edge connected to them. While processing the elements, we will
// add new ports to this Iterator. So we need a ListIterator.
final ListIterator<LPort> portsWithSideIter =
Lists.newLinkedList(component.getNonLoopPorts()).listIterator();
while (portsWithSideIter.hasNext()) {
final LPort portWithSide = portsWithSideIter.next();
if (portWithSide.getOutgoingEdges().isEmpty()) {
// inbound port
for (final LEdge edgeWithHiddenPort : portWithSide.getIncomingEdges()) {
final LPort hiddenPort = edgeWithHiddenPort.getSource();
if (hiddenPorts.contains(hiddenPort)) {
final ListIterator<LPort> nodePortIter = node.getPorts().listIterator();
LPort portOnNode = nodePortIter.next();
// find the port with side ...
while (!portOnNode.equals(portWithSide)) {
portOnNode = nodePortIter.next();
}
// ... and add the hidden port on it's right side
nodePortIter.add(hiddenPort);
portsWithSideIter.add(hiddenPort);
setSideOfPort(hiddenPort, portWithSide.getSide());
// ensure the next element will be our new added element
portsWithSideIter.previous();
portsWithSideIter.previous();
hiddenPorts.remove(hiddenPort);
}
}
} else {
// outbound port
for (final LEdge edgeWithHiddenPort : portWithSide.getOutgoingEdges()) {
final LPort hiddenPort = edgeWithHiddenPort.getTarget();
if (hiddenPorts.contains(hiddenPort)) {
final ListIterator<LPort> nodePortIter = node.getPorts().listIterator();
LPort portOnNode = nodePortIter.next();
// find the port with side ...
while (!portOnNode.equals(portWithSide)) {
portOnNode = nodePortIter.next();
}
// ... and add the hidden port on it's left side
nodePortIter.previous();
nodePortIter.add(hiddenPort);
portsWithSideIter.add(hiddenPort);
setSideOfPort(hiddenPort, portWithSide.getSide());
// ensure the next element will be our new added element
portsWithSideIter.previous();
portsWithSideIter.previous();
hiddenPorts.remove(hiddenPort);
}
}
}
}
}
/**
* Removes all sides from the list of available sides, that already have an port places on it.
* Use to make sure no loops will be places on sides with ports containing non-loop edges.
*/
public void removeOccupiedSides() {
for (final LPort port : node.getPorts()) {
loopSides.removeSide(LoopSide.fromPortSides(port.getSide()));
}
}