🚀 go-pugleaf

Holger Stratmann <hs@cassiopeia.de> skrev i
diskussionsgruppsmeddelandet:37B97436.60A20FCB@cassiopeia.de...
> This is just for starters: How do I insert a couple of nodes into a
> JTree?
>
> e.g. what's the code for
> * Root
>   |- Parent 1
>   |  |- Child 11
>   |  '- Child 12
>   '- Parent 2
>      '- Child 21

DefaultMutableTreeNode root=new DefaultMutableTreeNode("Root");
DefaultTreeModel model=new DefaultTreeModel(root);
JTree tree=new JTree(model);

DefaultMutableTreeNode n=new DefaultMutableTreeNode("Parent 1");
model.insertNodeInto(n, root, 0);
model.insertNodeInto(new DefaultMutableTreeNode("Child 11"), n, 0);
model.insertNodeInto(new DefaultMutableTreeNode("Child 12"), n, 1);
n=new DefaultMutableTreeNode("Parent 2");
model.insertNodeInto(n, root, 1);
model.insertNodeInto(new DefaultMutableTreeNode("Child 21"), n, 0);

The DefaultMutableTreeNodes themselves have a large number of functions for
manipulating the tree structure. These are much more flexible then just
using insertNodeInto() as above. However, if you use those no messages will
be fired to the tree, and you must fire them yourself.
(eg. model.nodesWereInserted(...) )