JTree.DynamicUtilTreeNode (Java SE 15 & JDK 15) (original) (raw)

All Implemented Interfaces:

[Serializable](../../../java.base/java/io/Serializable.html "interface in java.io"), [Cloneable](../../../java.base/java/lang/Cloneable.html "interface in java.lang"), [MutableTreeNode](tree/MutableTreeNode.html "interface in javax.swing.tree"), [TreeNode](tree/TreeNode.html "interface in javax.swing.tree")

Enclosing class:

JTree

public static class JTree.DynamicUtilTreeNode extends DefaultMutableTreeNode

DynamicUtilTreeNode can wrap vectors/hashtables/arrays/strings and create the appropriate children tree nodes as necessary. It is dynamic in that it will only create the children as necessary.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans has been added to the java.beans package. Please see XMLEncoder.

• Field Summary

Fields

• Constructor Summary

Constructors

• Method Summary

Methods declared in class javax.swing.tree.DefaultMutableTreeNode

[add](tree/DefaultMutableTreeNode.html#add%28javax.swing.tree.MutableTreeNode%29), [breadthFirstEnumeration](tree/DefaultMutableTreeNode.html#breadthFirstEnumeration%28%29), [clone](tree/DefaultMutableTreeNode.html#clone%28%29), [depthFirstEnumeration](tree/DefaultMutableTreeNode.html#depthFirstEnumeration%28%29), [getAllowsChildren](tree/DefaultMutableTreeNode.html#getAllowsChildren%28%29), [getChildAfter](tree/DefaultMutableTreeNode.html#getChildAfter%28javax.swing.tree.TreeNode%29), [getChildBefore](tree/DefaultMutableTreeNode.html#getChildBefore%28javax.swing.tree.TreeNode%29), [getDepth](tree/DefaultMutableTreeNode.html#getDepth%28%29), [getFirstChild](tree/DefaultMutableTreeNode.html#getFirstChild%28%29), [getFirstLeaf](tree/DefaultMutableTreeNode.html#getFirstLeaf%28%29), [getIndex](tree/DefaultMutableTreeNode.html#getIndex%28javax.swing.tree.TreeNode%29), [getLastChild](tree/DefaultMutableTreeNode.html#getLastChild%28%29), [getLastLeaf](tree/DefaultMutableTreeNode.html#getLastLeaf%28%29), [getLeafCount](tree/DefaultMutableTreeNode.html#getLeafCount%28%29), [getLevel](tree/DefaultMutableTreeNode.html#getLevel%28%29), [getNextLeaf](tree/DefaultMutableTreeNode.html#getNextLeaf%28%29), [getNextNode](tree/DefaultMutableTreeNode.html#getNextNode%28%29), [getNextSibling](tree/DefaultMutableTreeNode.html#getNextSibling%28%29), [getParent](tree/DefaultMutableTreeNode.html#getParent%28%29), [getPath](tree/DefaultMutableTreeNode.html#getPath%28%29), [getPathToRoot](tree/DefaultMutableTreeNode.html#getPathToRoot%28javax.swing.tree.TreeNode,int%29), [getPreviousLeaf](tree/DefaultMutableTreeNode.html#getPreviousLeaf%28%29), [getPreviousNode](tree/DefaultMutableTreeNode.html#getPreviousNode%28%29), [getPreviousSibling](tree/DefaultMutableTreeNode.html#getPreviousSibling%28%29), [getRoot](tree/DefaultMutableTreeNode.html#getRoot%28%29), [getSharedAncestor](tree/DefaultMutableTreeNode.html#getSharedAncestor%28javax.swing.tree.DefaultMutableTreeNode%29), [getSiblingCount](tree/DefaultMutableTreeNode.html#getSiblingCount%28%29), [getUserObject](tree/DefaultMutableTreeNode.html#getUserObject%28%29), [getUserObjectPath](tree/DefaultMutableTreeNode.html#getUserObjectPath%28%29), [insert](tree/DefaultMutableTreeNode.html#insert%28javax.swing.tree.MutableTreeNode,int%29), [isNodeAncestor](tree/DefaultMutableTreeNode.html#isNodeAncestor%28javax.swing.tree.TreeNode%29), [isNodeChild](tree/DefaultMutableTreeNode.html#isNodeChild%28javax.swing.tree.TreeNode%29), [isNodeDescendant](tree/DefaultMutableTreeNode.html#isNodeDescendant%28javax.swing.tree.DefaultMutableTreeNode%29), [isNodeRelated](tree/DefaultMutableTreeNode.html#isNodeRelated%28javax.swing.tree.DefaultMutableTreeNode%29), [isNodeSibling](tree/DefaultMutableTreeNode.html#isNodeSibling%28javax.swing.tree.TreeNode%29), [isRoot](tree/DefaultMutableTreeNode.html#isRoot%28%29), [pathFromAncestorEnumeration](tree/DefaultMutableTreeNode.html#pathFromAncestorEnumeration%28javax.swing.tree.TreeNode%29), [postorderEnumeration](tree/DefaultMutableTreeNode.html#postorderEnumeration%28%29), [preorderEnumeration](tree/DefaultMutableTreeNode.html#preorderEnumeration%28%29), [remove](tree/DefaultMutableTreeNode.html#remove%28int%29), [remove](tree/DefaultMutableTreeNode.html#remove%28javax.swing.tree.MutableTreeNode%29), [removeAllChildren](tree/DefaultMutableTreeNode.html#removeAllChildren%28%29), [removeFromParent](tree/DefaultMutableTreeNode.html#removeFromParent%28%29), [setAllowsChildren](tree/DefaultMutableTreeNode.html#setAllowsChildren%28boolean%29), [setParent](tree/DefaultMutableTreeNode.html#setParent%28javax.swing.tree.MutableTreeNode%29), [setUserObject](tree/DefaultMutableTreeNode.html#setUserObject%28java.lang.Object%29), [toString](tree/DefaultMutableTreeNode.html#toString%28%29)

• Field Details

  • hasChildren

  protected boolean hasChildren
  Does the this JTree have children? This property is currently not implemented.

  • childValue

  protected Object childValue
  Value to create children with.

  • loadedChildren

  protected boolean loadedChildren
  Have the children been loaded yet?

• Constructor Details

  • DynamicUtilTreeNode

  public DynamicUtilTreeNode​(Object value,Object children)
  Creates a node with the specified object as its value and with the specified children. For the node to allow children, the children-object must be an array of objects, aVector, or a Hashtable -- even if empty. Otherwise, the node is not allowed to have children.
  Parameters:
  value - the Object that is the value for the new node
  children - an array of Objects, aVector, or a Hashtable used to create the child nodes; if any other object is specified, or if the value isnull, then the node is not allowed to have children

• Method Details

  • createChildren

  Adds to parent all the children in children. If children is an array or vector all of its elements are added is children, otherwise if children is a hashtable all the key/value pairs are added in the orderEnumeration returns them.
  Parameters:
  parent - the parent node
  children - the children

  • isLeaf

  public boolean isLeaf()
  Returns true if this node allows children. Whether the node allows children depends on how it was created.
  Specified by:
  [isLeaf](tree/TreeNode.html#isLeaf%28%29) in interface [TreeNode](tree/TreeNode.html "interface in javax.swing.tree")
  Overrides:
  [isLeaf](tree/DefaultMutableTreeNode.html#isLeaf%28%29) in class [DefaultMutableTreeNode](tree/DefaultMutableTreeNode.html "class in javax.swing.tree")
  Returns:
  true if this node allows children, false otherwise
  See Also:
  JTree.DynamicUtilTreeNode

  • getChildCount

  public int getChildCount()
  Returns the number of child nodes.
  Specified by:
  [getChildCount](tree/TreeNode.html#getChildCount%28%29) in interface [TreeNode](tree/TreeNode.html "interface in javax.swing.tree")
  Overrides:
  [getChildCount](tree/DefaultMutableTreeNode.html#getChildCount%28%29) in class [DefaultMutableTreeNode](tree/DefaultMutableTreeNode.html "class in javax.swing.tree")
  Returns:
  the number of child nodes

  • loadChildren

  protected void loadChildren()
  Loads the children based on childValue. If childValue is a Vector or array each element is added as a child, if childValue is a Hashtable each key/value pair is added in the order thatEnumeration returns the keys.

  • getChildAt

  public TreeNode getChildAt​(int index)
  Subclassed to load the children, if necessary.
  Specified by:
  [getChildAt](tree/TreeNode.html#getChildAt%28int%29) in interface [TreeNode](tree/TreeNode.html "interface in javax.swing.tree")
  Overrides:
  [getChildAt](tree/DefaultMutableTreeNode.html#getChildAt%28int%29) in class [DefaultMutableTreeNode](tree/DefaultMutableTreeNode.html "class in javax.swing.tree")
  Parameters:
  index - an index into this node's child array
  Returns:
  the TreeNode in this node's child array at the specified index

  • children

  Subclassed to load the children, if necessary.
  Specified by:
  [children](tree/TreeNode.html#children%28%29) in interface [TreeNode](tree/TreeNode.html "interface in javax.swing.tree")
  Overrides:
  [children](tree/DefaultMutableTreeNode.html#children%28%29) in class [DefaultMutableTreeNode](tree/DefaultMutableTreeNode.html "class in javax.swing.tree")
  Returns:
  an Enumeration of this node's children