JTree.DynamicUtilTreeNode (Java Platform SE 8 ) (original) (raw)

• java.lang.Object

• • javax.swing.tree.DefaultMutableTreeNode
  • • javax.swing.JTree.DynamicUtilTreeNode

• All Implemented Interfaces:
  Serializable, Cloneable, MutableTreeNode, TreeNode
  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

  Modifier and Type	Field	Description
  protected Object	childValue	Value to create children with.
  protected boolean	hasChildren	Does the this JTree have children? This property is currently not implemented.
  protected boolean	loadedChildren	Have the children been loaded yet?

     * ### Fields inherited from class javax.swing.tree.[DefaultMutableTreeNode](../../javax/swing/tree/DefaultMutableTreeNode.html "class in javax.swing.tree")  
     `[allowsChildren](../../javax/swing/tree/DefaultMutableTreeNode.html#allowsChildren), [children](../../javax/swing/tree/DefaultMutableTreeNode.html#children), [EMPTY_ENUMERATION](../../javax/swing/tree/DefaultMutableTreeNode.html#EMPTY%5FENUMERATION), [parent](../../javax/swing/tree/DefaultMutableTreeNode.html#parent), [userObject](../../javax/swing/tree/DefaultMutableTreeNode.html#userObject)`  

  • Constructor Summary

  Constructors

  Constructor	Description
  DynamicUtilTreeNode(Object value,Object children)	Creates a node with the specified object as its value and with the specified children.

  • Method Summary

  All Methods Static Methods Instance Methods Concrete Methods

  Modifier and Type	Method	Description
  Enumeration	children()	Subclassed to load the children, if necessary.
  static void	createChildren(DefaultMutableTreeNode parent,Object children)	Adds to parent all the children in children.
  TreeNode	getChildAt(int index)	Subclassed to load the children, if necessary.
  int	getChildCount()	Returns the number of child nodes.
  boolean	isLeaf()	Returns true if this node allows children.
  protected void	loadChildren()	Loads the children based on childValue.

     * ### Methods inherited from class javax.swing.tree.[DefaultMutableTreeNode](../../javax/swing/tree/DefaultMutableTreeNode.html "class in javax.swing.tree")  
     `[add](../../javax/swing/tree/DefaultMutableTreeNode.html#add-javax.swing.tree.MutableTreeNode-), [breadthFirstEnumeration](../../javax/swing/tree/DefaultMutableTreeNode.html#breadthFirstEnumeration--), [clone](../../javax/swing/tree/DefaultMutableTreeNode.html#clone--), [depthFirstEnumeration](../../javax/swing/tree/DefaultMutableTreeNode.html#depthFirstEnumeration--), [getAllowsChildren](../../javax/swing/tree/DefaultMutableTreeNode.html#getAllowsChildren--), [getChildAfter](../../javax/swing/tree/DefaultMutableTreeNode.html#getChildAfter-javax.swing.tree.TreeNode-), [getChildBefore](../../javax/swing/tree/DefaultMutableTreeNode.html#getChildBefore-javax.swing.tree.TreeNode-), [getDepth](../../javax/swing/tree/DefaultMutableTreeNode.html#getDepth--), [getFirstChild](../../javax/swing/tree/DefaultMutableTreeNode.html#getFirstChild--), [getFirstLeaf](../../javax/swing/tree/DefaultMutableTreeNode.html#getFirstLeaf--), [getIndex](../../javax/swing/tree/DefaultMutableTreeNode.html#getIndex-javax.swing.tree.TreeNode-), [getLastChild](../../javax/swing/tree/DefaultMutableTreeNode.html#getLastChild--), [getLastLeaf](../../javax/swing/tree/DefaultMutableTreeNode.html#getLastLeaf--), [getLeafCount](../../javax/swing/tree/DefaultMutableTreeNode.html#getLeafCount--), [getLevel](../../javax/swing/tree/DefaultMutableTreeNode.html#getLevel--), [getNextLeaf](../../javax/swing/tree/DefaultMutableTreeNode.html#getNextLeaf--), [getNextNode](../../javax/swing/tree/DefaultMutableTreeNode.html#getNextNode--), [getNextSibling](../../javax/swing/tree/DefaultMutableTreeNode.html#getNextSibling--), [getParent](../../javax/swing/tree/DefaultMutableTreeNode.html#getParent--), [getPath](../../javax/swing/tree/DefaultMutableTreeNode.html#getPath--), [getPathToRoot](../../javax/swing/tree/DefaultMutableTreeNode.html#getPathToRoot-javax.swing.tree.TreeNode-int-), [getPreviousLeaf](../../javax/swing/tree/DefaultMutableTreeNode.html#getPreviousLeaf--), [getPreviousNode](../../javax/swing/tree/DefaultMutableTreeNode.html#getPreviousNode--), [getPreviousSibling](../../javax/swing/tree/DefaultMutableTreeNode.html#getPreviousSibling--), [getRoot](../../javax/swing/tree/DefaultMutableTreeNode.html#getRoot--), [getSharedAncestor](../../javax/swing/tree/DefaultMutableTreeNode.html#getSharedAncestor-javax.swing.tree.DefaultMutableTreeNode-), [getSiblingCount](../../javax/swing/tree/DefaultMutableTreeNode.html#getSiblingCount--), [getUserObject](../../javax/swing/tree/DefaultMutableTreeNode.html#getUserObject--), [getUserObjectPath](../../javax/swing/tree/DefaultMutableTreeNode.html#getUserObjectPath--), [insert](../../javax/swing/tree/DefaultMutableTreeNode.html#insert-javax.swing.tree.MutableTreeNode-int-), [isNodeAncestor](../../javax/swing/tree/DefaultMutableTreeNode.html#isNodeAncestor-javax.swing.tree.TreeNode-), [isNodeChild](../../javax/swing/tree/DefaultMutableTreeNode.html#isNodeChild-javax.swing.tree.TreeNode-), [isNodeDescendant](../../javax/swing/tree/DefaultMutableTreeNode.html#isNodeDescendant-javax.swing.tree.DefaultMutableTreeNode-), [isNodeRelated](../../javax/swing/tree/DefaultMutableTreeNode.html#isNodeRelated-javax.swing.tree.DefaultMutableTreeNode-), [isNodeSibling](../../javax/swing/tree/DefaultMutableTreeNode.html#isNodeSibling-javax.swing.tree.TreeNode-), [isRoot](../../javax/swing/tree/DefaultMutableTreeNode.html#isRoot--), [pathFromAncestorEnumeration](../../javax/swing/tree/DefaultMutableTreeNode.html#pathFromAncestorEnumeration-javax.swing.tree.TreeNode-), [postorderEnumeration](../../javax/swing/tree/DefaultMutableTreeNode.html#postorderEnumeration--), [preorderEnumeration](../../javax/swing/tree/DefaultMutableTreeNode.html#preorderEnumeration--), [remove](../../javax/swing/tree/DefaultMutableTreeNode.html#remove-int-), [remove](../../javax/swing/tree/DefaultMutableTreeNode.html#remove-javax.swing.tree.MutableTreeNode-), [removeAllChildren](../../javax/swing/tree/DefaultMutableTreeNode.html#removeAllChildren--), [removeFromParent](../../javax/swing/tree/DefaultMutableTreeNode.html#removeFromParent--), [setAllowsChildren](../../javax/swing/tree/DefaultMutableTreeNode.html#setAllowsChildren-boolean-), [setParent](../../javax/swing/tree/DefaultMutableTreeNode.html#setParent-javax.swing.tree.MutableTreeNode-), [setUserObject](../../javax/swing/tree/DefaultMutableTreeNode.html#setUserObject-java.lang.Object-), [toString](../../javax/swing/tree/DefaultMutableTreeNode.html#toString--)`  
     * ### Methods inherited from class java.lang.[Object](../../java/lang/Object.html "class in java.lang")  
     `[equals](../../java/lang/Object.html#equals-java.lang.Object-), [finalize](../../java/lang/Object.html#finalize--), [getClass](../../java/lang/Object.html#getClass--), [hashCode](../../java/lang/Object.html#hashCode--), [notify](../../java/lang/Object.html#notify--), [notifyAll](../../java/lang/Object.html#notifyAll--), [wait](../../java/lang/Object.html#wait--), [wait](../../java/lang/Object.html#wait-long-), [wait](../../java/lang/Object.html#wait-long-int-)`

• • Field Detail

     * #### hasChildren  
     protected boolean hasChildren  
     Does the this `JTree` have children? This property is currently not implemented.  
     * #### childValue  
     protected [Object](../../java/lang/Object.html "class in java.lang") childValue  
     Value to create children with.  
     * #### loadedChildren  
     protected boolean loadedChildren  
     Have the children been loaded yet?  

  • Constructor Detail

    * #### DynamicUtilTreeNode  
    public DynamicUtilTreeNode([Object](../../java/lang/Object.html "class in java.lang") value,  
                               [Object](../../java/lang/Object.html "class in java.lang") 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, a`Vector`, 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 `Object`s, a`Vector`, or a `Hashtable` used to create the child nodes; if any other object is specified, or if the value is`null`, then the node is not allowed to have children  

  • Method Detail

    * #### createChildren  
    public static void createChildren([DefaultMutableTreeNode](../../javax/swing/tree/DefaultMutableTreeNode.html "class in javax.swing.tree") parent,  
                                      [Object](../../java/lang/Object.html "class in java.lang") children)  
    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 order`Enumeration` returns them.  
    * #### 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](../../javax/swing/tree/TreeNode.html#isLeaf--)` in interface `[TreeNode](../../javax/swing/tree/TreeNode.html "interface in javax.swing.tree")`  
    Overrides:  
    `[isLeaf](../../javax/swing/tree/DefaultMutableTreeNode.html#isLeaf--)` in class `[DefaultMutableTreeNode](../../javax/swing/tree/DefaultMutableTreeNode.html "class in javax.swing.tree")`  
    Returns:  
    true if this node allows children, false otherwise  
    See Also:  
    [JTree.DynamicUtilTreeNode](../../javax/swing/JTree.DynamicUtilTreeNode.html "class in javax.swing")  
    * #### getChildCount  
    public int getChildCount()  
    Returns the number of child nodes.  
    Specified by:  
    `[getChildCount](../../javax/swing/tree/TreeNode.html#getChildCount--)` in interface `[TreeNode](../../javax/swing/tree/TreeNode.html "interface in javax.swing.tree")`  
    Overrides:  
    `[getChildCount](../../javax/swing/tree/DefaultMutableTreeNode.html#getChildCount--)` in class `[DefaultMutableTreeNode](../../javax/swing/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 that`Enumeration` returns the keys.  
    * #### getChildAt  
    public [TreeNode](../../javax/swing/tree/TreeNode.html "interface in javax.swing.tree") getChildAt(int index)  
    Subclassed to load the children, if necessary.  
    Specified by:  
    `[getChildAt](../../javax/swing/tree/TreeNode.html#getChildAt-int-)` in interface `[TreeNode](../../javax/swing/tree/TreeNode.html "interface in javax.swing.tree")`  
    Overrides:  
    `[getChildAt](../../javax/swing/tree/DefaultMutableTreeNode.html#getChildAt-int-)` in class `[DefaultMutableTreeNode](../../javax/swing/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  
    public [Enumeration](../../java/util/Enumeration.html "interface in java.util") children()  
    Subclassed to load the children, if necessary.  
    Specified by:  
    `[children](../../javax/swing/tree/TreeNode.html#children--)` in interface `[TreeNode](../../javax/swing/tree/TreeNode.html "interface in javax.swing.tree")`  
    Overrides:  
    `[children](../../javax/swing/tree/DefaultMutableTreeNode.html#children--)` in class `[DefaultMutableTreeNode](../../javax/swing/tree/DefaultMutableTreeNode.html "class in javax.swing.tree")`  
    Returns:  
    an Enumeration of this node's children

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