interface org.aswing.tree.TreeModel
| Implementors | ||||
 | DefaultTreeModel |
| ||
The interface that defines a suitable data model for a JTree.
For further information on tree models,
including an example of a custom implementation,
see <a
href="http://java.sun.com/docs/books/tutorial/uiswing/components/tree.html">How to Use Trees
in The Java Tutorial.
JTree and its related classes make extensive use of
TreePaths for indentifying nodes in the TreeModel.
If a TreeModel returns the same object, as compared by
equals, at two different indices under the same parent
than the resulting TreePath objects will be considered equal
as well. Some implementations may assume that if two
TreePaths are equal, they identify the same node. If this
condition is not met, painting problems and other oddities may result.
In other words, if getChild for a given parent returns
the same Object (as determined by equals) problems may
result, and it is recommended you avoid doing this.
(Fully quoted from java swing's tree doc)
@see TreePath
@author paling
Instance Fields
function addTreeModelListener(l:TreeModelListener): Void
Adds a listener for the TreeModelEvent
posted after the tree changes.
@see #removeTreeModelListener()
| l | the listener to add |
function getChild(parent:TreeNode, index:Int): Dynamic
Returns the child of parent at index index
in the parent's
child array. parent must be a node previously obtained
from this data source. This should not return null
if index
is a valid index for parent (that is index >= 0 &&
index < getChildCount(parent)).
| parent | a node in the tree, obtained from this data source |
| returns | the child of |
function getChildCount(parent:TreeNode): Int
Returns the number of children of parent.
Returns 0 if the node
is a leaf or if it has no children. parent must be a node
previously obtained from this data source.
| parent | a node in the tree, obtained from this data source |
| returns | the number of children of the node |
function getIndexOfChild(parent:TreeNode, child:Dynamic): Int
Returns the index of child in parent. If either parent
or child is null, returns -1.
If either parent or child don't
belong to this tree model, returns -1.
| parent | a note in the tree, obtained from this data source |
| child | the node we are interested in |
| returns | the index of the child in the parent, or -1 if either
|
Returns the root of the tree. Returns null
only if the tree has no nodes.
| returns | the root of the tree |
function isLeaf(node:TreeNode): Bool
Returns true if node is a leaf.
It is possible for this method to return false
even if node has no children.
A directory in a filesystem, for example,
may contain no files; the node representing
the directory is not a leaf, but it also has no children.
| node | a node in the tree, obtained from this data source |
| returns | true if |
function removeTreeModelListener(l:TreeModelListener): Void
Removes a listener previously added with
addTreeModelListener.
@see #addTreeModelListener()
| l | the listener to remove |
function valueForPathChanged(path:TreePath, newValue:Dynamic): Void
Messaged when the user has altered the value for the item identified
by path to newValue.
If newValue signifies a truly new value
the model should post a treeNodesChanged event.
| path | path to the node that the user has altered |
| newValue | the new value from the TreeCellEditor |