/**
* Recursive traverse of tree to determine selections A leaf is selected if rsm is selected.
* Nonleaf nodes are selected if all children are selected.
*
* @param tn node in the tree for which to determine selection
* @param nodeidx the ordinal postion in the segments array
* @param gsm the graph segments selection model
* @param rsm the table row selection model
* @return true if given node tn is selected, else false
*/
private boolean selTraverse(
TreeNode tn, int[] nodeidx, ListSelectionModel gsm, ListSelectionModel rsm) {
boolean selected = true;
if (!tn.isLeaf()) {
// A nonleaf node is selected if all its children are selected.
for (int i = 0; i < tn.getChildCount(); i++) {
TreeNode cn = tn.getChildAt(i);
selected &= selTraverse(cn, nodeidx, gsm, rsm);
}
} else {
if (tn instanceof RowCluster) {
// get the row index of the leaf node
int ri = ((RowCluster) tn).getIndex();
// A leaf is selected if its row is selected in the row selection rsm.
selected = rsm.isSelectedIndex(ri);
}
}
// Get the offset into the segments array
int idx = nodeidx[0] * segOffset;
if (selected) {
gsm.addSelectionInterval(idx, idx + (segOffset - 1));
} else {
gsm.removeSelectionInterval(idx, idx + (segOffset - 1));
}
// Increment the nodeidx in the tree
nodeidx[0]++;
return selected;
}
/**
* Traververse the tree selecting rows coresponding to leaf nodes of the given node tn
*
* @param tn the node from which to start traversing
* @param rsm the selection model in which to mark selected rows
*/
private void selectTraverse(TreeNode tn, ListSelectionModel rsm) {
if (!tn.isLeaf()) {
for (int i = 0; i < tn.getChildCount(); i++) {
TreeNode cn = tn.getChildAt(i);
selectTraverse(cn, rsm);
}
} else {
if (tn instanceof RowCluster) {
int ri = ((RowCluster) tn).getIndex();
rsm.addSelectionInterval(ri, ri);
}
}
}