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.
| Modifier and Type | Field and 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?
|
allowsChildren, children, EMPTY_ENUMERATION, parent, userObject| Constructor and Description |
|---|
DynamicUtilTreeNode(Object value,
Object children)
Creates a node with the specified object as its value and
with the specified children.
|
| Modifier and Type | Method and 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. |
add, breadthFirstEnumeration, clone, depthFirstEnumeration, getAllowsChildren, getChildAfter, getChildBefore, 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, toStringprotected boolean hasChildren
JTree have children?
This property is currently not implemented.protected Object childValue
protected boolean loadedChildren
public DynamicUtilTreeNode(Object value, Object children)
Vector, or a Hashtable -- even
if empty. Otherwise, the node is not
allowed to have children.value - the Object that is the value for the
new nodechildren - an array of Objects, 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 childrenpublic static void createChildren(DefaultMutableTreeNode parent, Object children)
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.public boolean isLeaf()
isLeaf in interface TreeNodeisLeaf in class DefaultMutableTreeNodeJTree.DynamicUtilTreeNodepublic int getChildCount()
getChildCount in interface TreeNodegetChildCount in class DefaultMutableTreeNodeprotected void loadChildren()
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.public TreeNode getChildAt(int index)
getChildAt in interface TreeNodegetChildAt in class DefaultMutableTreeNodeindex - an index into this node's child arraypublic Enumeration children()
children in interface TreeNodechildren in class DefaultMutableTreeNode Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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