/**
* @param startNode
* @return the finish node corresponding to the start node
*/
private TableNodeItem finishNode(TableNodeItem startNode) {
TableNodeItem nodeFinish = null;
String startNodeName = startNode.getString(NAME);
String finishNodeName = startNodeName.substring(0, startNodeName.lastIndexOf(START)) + "Finish";
int startNodes = 1;
int finishNodes = 0;
Iterator nodes = (startNode.getGraph()).nodes();
while (nodes.hasNext()) {
TableNodeItem node = (TableNodeItem) nodes.next();
if (node.getInt(ID) > startNode.getInt(ID) && (node.getString(NAME)).equals(startNodeName)) {
startNodes++;
}
if (node.getInt(ID) > startNode.getInt(ID) && (node.getString(NAME)).equals(finishNodeName)) {
finishNodes++;
}
if (startNodes == finishNodes) {
nodeFinish = node;
break;
}
}
return nodeFinish;
}
/**
* expands one level at a time when step node is clicked
*
* @param item
*/
public void expandOneLevel(VisualItem item) {
Visualization vis = item.getVisualization();
TableNodeItem stepItem = (TableNodeItem) item;
TableNodeItem stepParent = getStepParent(stepItem);
TableNodeItem stepChild = getStepChild(stepItem);
int finishNodeId = 0;
Iterator visualItems = vis.visibleItems();
VisualItem node;
while (visualItems.hasNext()) {
node = (VisualItem) visualItems.next();
if (node instanceof TableNodeItem
&& node.getInt(ID) > (stepParent.getInt(ID) + 1)
&& node.getInt(ID) < stepChild.getInt(ID)
&& node.getString(TYPE).equals(START)
&& node.getInt(ID) > finishNodeId) {
collapseExpand(node);
finishNodeId = finishNode((TableNodeItem) node).getInt(ID);
}
}
}
/**
* sets all "Step" type nodes (and their incident edges) connected to the startNode passed as
* parameter visible
*
* @param startNode
*/
private void setStepVisible(TableNodeItem startNode) {
TableNodeItem startNodeParent = getParent(startNode);
Iterator<TableNodeItem> children = children(startNodeParent);
TableNodeItem child = null;
Iterator stepEdges = null;
TableEdgeItem stepEdge;
assert children.hasNext();
while (children.hasNext()) {
child = children.next();
if (child.getString(TYPE).equals(STEP)) {
child.setVisible(true);
stepEdges = child.edges();
break;
}
}
while (stepEdges.hasNext()) {
stepEdge = (TableEdgeItem) stepEdges.next();
stepEdge.setVisible(true);
}
stepId = child.getInt(ID);
}