使用JTree增加，删除，和重命名节点完整实例(三)
eDir();
}
});
} else if (evt.getClickCount() == 2) {
TreePath path = tree.getSelectionPath();
tree.startEditingAtPath(path);
}
}
});
}
/** Remove the currently selected node. */
public void removeCurrentNode() {
TreePath currentSelection = tree.getSelectionPath();
if (currentSelection != null) {
DefaultMutableTreeNode currentNode = (DefaultMutableTreeNode) (currentSelection
.getLastPathComponent());
MutableTreeNode parent = (MutableTreeNode) (currentNode.getParent());
if (parent != null) {
treeModel.removeNodeFromParent(currentNode);
return;
}
} // Either there was no selection, or the root was selected.
toolkit.beep();
}
/** Add child to the currently selected node. */
public DefaultMutableTreeNode addObject(Object child) {
DefaultMutableTreeNode parentNode = null;
TreePath parentPath = tree.getSelectionPath();
if (parentPath == null) {
parentNode = rootNode;
} else {
parentNode = (DefaultMutableTreeNode) (parentPath
.getLastPathComponent());
}
return addObject(parentNode, child, true);
}
public DefaultMutableTreeNode addObject(DefaultMutableTreeNode parent,
Object child) {
return addObject(parent, child, false);
}
public DefaultMutableTreeNode addObject(DefaultMutableTreeNode parent,
Object child, boolean shouldBeVisible) {
DefaultMutableTreeNode childNode = new DefaultMutableTreeNode(child);
if (parent == null) {
parent = rootNode;
}
// It is key to invoke this on the TreeModel, and NOT
// DefaultMutableTreeNode
treeModel.insertNodeInto(childNode, parent, parent.getChildCount());
// Make sure the user can see the lovely new node.
if (shouldBeVisible) {
tree.scrollPathToVisible(new TreePath(childNode.getPath()));
}
return childNode;
}
class DocTreeModelListener implements TreeModelListener {
public void treeNodesChanged(TreeModelEvent e) {
TreePath tp = e.getTreePath();
DefaultMutableTreeNode parentNode = (DefaultMutableTreeNode) (tp
.getLastPathComponent());
/*
* If the event lists children, then the changed node is the child
* of the node we've already gotten. Otherwise, the changed node and
* the specified node are the same.
*/
int index = e.getChildIndices()[0];
DefaultMutableTreeNode changedNode = (DefaultMutableTreeNode) (parentNode
.getChildAt(index));
VEachDir newdir = (VEachDir) changedNode.getUserObject();
dirsList.add(newdir);
}
public void treeNodesInserted(TreeModelEvent e) {
}
public void treeNodesRemoved(TreeModelEvent e) {
}
public void treeStructureChanged(TreeModelEvent e) {
System.out.println("treeStructureChanged");
}
}
private class DocTreeModel extends DefaultTreeModel {
private static final long serialVersionUID = 922481109805944053L;
public DocTreeModel(TreeNode root) {
super(root);
}
@Override
public void valueForPathChanged(TreePath path, Object newValue) {
Object obj = ((DefaultMutableTreeNode) path.getLastPathComponent())
.getUserObject();
((VEachDir) obj).setDirName(newValue.toString());
super.valueForPathChanged(path, obj);
}
}
}