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JTree question (add/remove)

HI

I have a JTree component and I need to know :
1. how to delete a node from it
2. how to add a node and the new node will be editable when it added.

the foloowing code doesn't work:
to remove:
DefaultMutableTreeNode node = (DefaultMutableTreeNode)tree.getSelectionPath().getLastPathComponent();
node.getParent().remove(node);

to add:
DefaultMutableTreeNode node = (DefaultMutableTreeNode)tree.getSelectionPath().getLastPathComponent();
node.add(new DefaultMutableTreeNode("new node"));

thanks.

shaharh

ASKER

Edited text of question.

sprinkmeier

Did you update the GUI using
DefaultDataModel.notifyXXXXXX()
?
(going from mmeory here, might not be exactly right, but basically changeing the data is not enough, you have to tell the GUI that the data has changed too)

ASKER CERTIFIED SOLUTION

msmolyak

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shaharh

ASKER

can you send me some code ?

msmolyak

I defined these two methods in the node class to add and remove children. Class RwAbstractTreeNode is the subclass of DefaultMutableTreeNode.

/**
* Add a child node to this node.
*/
public void insertChildNode(RwAbstractTreeNode node)
{
DefaultTreeModel treeModel = (DefaultTreeModel) parentTree.getModel();

node.setTree(getTree());

treeModel.insertNodeInto(node, this, getChildCount());
}

/**
* Remove a child node from this node.
*/
public void removeChildNode(RwAbstractTreeNode node)
{
// Remove the child node from the tree
DefaultTreeModel treeModel = (DefaultTreeModel) parentTree.getModel();

treeModel.removeNodeFromParent(node);
}