/**
* Adds a root to the tree if it's not already in there.
*
* @return false if dir is already in the tree
*/
public boolean addRoot(File dir) {
// remove from deselected in any case
boolean changed = deselected.remove(dir);
// check if already included
for (File root : roots) {
if (FileUtils.isAncestor(root, dir)) {
if (root.equals(dir)) {
if (changed) {
directoryTreeModel.valueForPathChanged(getTreePath(dir), null);
}
return changed;
}
// make sure it is included
removeFromPath(dir);
TreePath path = getTreePath(dir);
directoryTree.scrollPathToVisible(path);
return changed;
} else if (FileUtils.isAncestor(dir, root)) {
removeRoot(root);
addDirToTree(dir);
// expand to root and its parent, since expand has no effect if root
// doesn't have subfolders
setExpanded(root);
// guaranteed to not be null since at least dir is its real ancestor
setExpanded(root.getParentFile());
return true;
}
}
addDirToTree(dir);
setRootExpanded();
return true;
}
