Class DirectoryTreeNode

java.lang.Object

javax.swing.tree.DefaultMutableTreeNode

smile.swing.tree.DirectoryTreeNode

All Implemented Interfaces:

Serializable, Cloneable, MutableTreeNode, TreeNode

public class DirectoryTreeNode
extends DefaultMutableTreeNode

A tree node for file directory.

See Also:

• Serialized Form

Field Summary

Fields inherited from class DefaultMutableTreeNode

allowsChildren, children, EMPTY_ENUMERATION, parent, userObject

Constructor Summary

Constructors

Constructor	Description
DirectoryTreeNode(Path path)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	addChildren(DefaultTreeModel model)	Adds the child nodes, skipping hidden files (those whose name starts with '.').
boolean	isLeaf()	Returns true if this node is a leaf (i.e.
Path	path()	Returns the directory path.
void	refresh(DefaultTreeModel model)	Refreshes the immediate children of this node to match the current state of the filesystem directory.
String	toString()

Methods inherited from class DefaultMutableTreeNode

add, breadthFirstEnumeration, children, clone, depthFirstEnumeration, getAllowsChildren, getChildAfter, getChildAt, getChildBefore, getChildCount, getDepth, getFirstChild, getFirstLeaf, getIndex, getLastChild, getLastLeaf, getLeafCount, getLevel, getNextLeaf, getNextNode, getNextSibling, getParent, getPath, getPathToRoot, getPreviousLeaf, getPreviousNode, getPreviousSibling, getRoot, getSharedAncestor, getSiblingCount, getUserObject, getUserObjectPath, insert, isNodeAncestor, isNodeChild, isNodeDescendant, isNodeRelated, isNodeSibling, isRoot, pathFromAncestorEnumeration, postorderEnumeration, preorderEnumeration, remove, remove, removeAllChildren, removeFromParent, setAllowsChildren, setParent, setUserObject

Methods inherited from class Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

DirectoryTreeNode

public DirectoryTreeNode(Path path)

Constructor.

Parameters:

path - the directory path.

Method Details

path

public Path path()

Returns the directory path.

Returns:

the directory path.

toString

public String toString()

Overrides:

toString in class DefaultMutableTreeNode

isLeaf

public boolean isLeaf()

Returns true if this node is a leaf (i.e. not a directory).

Delegates to DefaultMutableTreeNode.getAllowsChildren() which was set once from Files.isDirectory(Path, LinkOption...) in the constructor, avoiding a filesystem call on every repaint.

Specified by:

isLeaf in interface TreeNode

Overrides:

isLeaf in class DefaultMutableTreeNode

addChildren

public void addChildren(DefaultTreeModel model)

Adds the child nodes, skipping hidden files (those whose name starts with '.').

Parameters:

model - the tree model to insert child nodes into.

refresh

public void refresh(DefaultTreeModel model)

Refreshes the immediate children of this node to match the current state of the filesystem directory.

This method:

• Removes child nodes whose paths no longer exist on disk.
• Inserts new child nodes for paths that appeared on disk since the last refresh, maintaining the directories-first alphabetical order.
• Does not touch already-expanded grandchildren, so open subtrees are preserved across a refresh cycle.

Must be called on the Swing Event Dispatch Thread.

Parameters:

model - the tree model (used to fire the appropriate structural events).