/**
* Returns the folder that is shared (can be this node or a parent / grand-parent / ... of this
* node
*
* @return
*/
public FolderIndex getSharedTopFolder() {
if (this instanceof FileIndex) {
// is not shared and is of type files (this has no children)
return parent.getSharedTopFolder();
} else {
// is of type folder
FolderIndex folder = (FolderIndex) this;
if (folder.getSharedFlag()) {
// this is the top-most shared folder because the shared flag is activated
return folder;
} else if (folder.isRoot()) {
// the root folder is never shared
return null;
} else {
// move one level up (recursion)
return parent.getSharedTopFolder();
}
}
}
