/**
* Moves the column and heading at <code>columnIndex</code> to <code>newIndex</code>. The old
* column at <code>columnIndex</code> will now be found at <code>newIndex</code>. The column that
* used to be at <code>newIndex</code> is shifted left or right to make room. This will not move
* any columns if <code>columnIndex</code> equals <code>newIndex</code>. This method also posts a
* <code>columnMoved</code> event to its listeners.
*
* @param columnIndex the index of column to be moved
* @param newIndex new index to move the column
* @exception IllegalArgumentException if <code>column</code> or <code>newIndex</code> are not in
* the valid range
*/
public void moveColumn(int columnIndex, int newIndex) {
if ((columnIndex < 0)
|| (columnIndex >= getColumnCount())
|| (newIndex < 0)
|| (newIndex >= getColumnCount()))
throw new IllegalArgumentException("moveColumn() - Index out of range");
TableColumn aColumn;
// If the column has not yet moved far enough to change positions
// post the event anyway, the "draggedDistance" property of the
// tableHeader will say how far the column has been dragged.
// Here we are really trying to get the best out of an
// API that could do with some rethinking. We preserve backward
// compatibility by slightly bending the meaning of these methods.
if (columnIndex == newIndex) {
fireColumnMoved(new TableColumnModelEvent(this, columnIndex, newIndex));
return;
}
aColumn = (TableColumn) tableColumns.elementAt(columnIndex);
tableColumns.removeElementAt(columnIndex);
boolean selected = selectionModel.isSelectedIndex(columnIndex);
selectionModel.removeIndexInterval(columnIndex, columnIndex);
tableColumns.insertElementAt(aColumn, newIndex);
selectionModel.insertIndexInterval(newIndex, 1, true);
if (selected) {
selectionModel.addSelectionInterval(newIndex, newIndex);
} else {
selectionModel.removeSelectionInterval(newIndex, newIndex);
}
fireColumnMoved(new TableColumnModelEvent(this, columnIndex, newIndex));
}
/**
* 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);
}
}
}
