/**
* Destructor for node - removes edge controls on incidient edges and disconnects item from scene
*/
GNode::~GNode()
{
graph()->invalidateRanking();
if ( ( isEdgeControl() || isEdgeLabel())
&& isNotNullP( firstPred())
&& isNotNullP( firstSucc())
&& isNotNullP( firstPred()->pred())
&& isNotNullP( firstSucc()->succ()))
{
GRAPH_ASSERTD( areEqP( firstPred()->style(), firstSucc()->style()),
"Different styles on the same edge");
GEdge *e = graph()->newEdge( firstPred()->pred(), firstSucc()->succ());
e->setStyle( firstPred()->style());
} else if ( isSimple())
{
QList< GNode *> nodes;
GEdge* edge;
Marker m = graph()->newMarker();
for ( edge = firstSucc(); isNotNullP( edge); edge = edge->nextSucc())
{
edge->item()->adjust();
GNode* succ = edge->succ();
while ( succ->isEdgeControl() || succ->isEdgeLabel())
{
assert( isNotNullP( succ->firstSucc()));
if ( succ->mark( m))
{
nodes << succ;
}
succ = succ->firstSucc()->succ();
}
}
for ( edge = firstPred(); isNotNullP( edge); edge = edge->nextPred())
{
if ( edge->isSelf()) // We've already processed this one in previous loop
continue;
edge->item()->adjust();
GNode* pred = edge->pred();
while ( pred->isEdgeControl() || pred->isEdgeLabel())
{
assert( isNotNullP( pred->firstPred()));
if ( pred->mark( m))
{
nodes << pred;
}
pred = pred->firstPred()->pred();
}
}
foreach ( GNode *n, nodes)
{
graph()->deleteNode( n);
}
graph()->freeMarker( m);
}
/**
* Change edge's style
*/
void GGraph::setEdgeStyle( GStyle *style)
{
if ( sel_edges.isEmpty())
return;
GEdge* edge = sel_edges.first();
edge->setStyle( style);
edge->item()->adjust();
}