javax.swing.tree.TreeModel
public class PDFTreeModel
extends java.lang.Object
implements javax.swing.tree.TreeModel
Constructor | Description |
---|---|
PDFTreeModel() |
constructor.
|
PDFTreeModel(PDDocument doc) |
Constructor to take a document.
|
Modifier and Type | Method | Description |
---|---|---|
void |
addTreeModelListener(javax.swing.event.TreeModelListener l) |
Adds a listener for the
TreeModelEvent
posted after the tree changes. |
java.lang.Object |
getChild(java.lang.Object parent,
int index) |
Returns the child of
parent at index index
in the parent's
child array. |
int |
getChildCount(java.lang.Object parent) |
Returns the number of children of
parent . |
int |
getIndexOfChild(java.lang.Object parent,
java.lang.Object child) |
Returns the index of child in parent.
|
java.lang.Object |
getRoot() |
Returns the root of the tree.
|
boolean |
isLeaf(java.lang.Object node) |
Returns
true if node is a leaf. |
void |
removeTreeModelListener(javax.swing.event.TreeModelListener l) |
Removes a listener previously added with
addTreeModelListener . |
void |
setDocument(PDDocument doc) |
Set the document to display in the tree.
|
void |
valueForPathChanged(javax.swing.tree.TreePath path,
java.lang.Object newValue) |
Messaged when the user has altered the value for the item identified
by
path to newValue . |
public PDFTreeModel()
public PDFTreeModel(PDDocument doc)
doc
- The document to display in the tree.public void setDocument(PDDocument doc)
doc
- The document to display in the tree.public void addTreeModelListener(javax.swing.event.TreeModelListener l)
TreeModelEvent
posted after the tree changes.addTreeModelListener
in interface javax.swing.tree.TreeModel
l
- the listener to addremoveTreeModelListener(javax.swing.event.TreeModelListener)
public java.lang.Object getChild(java.lang.Object parent, int index)
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
)).getChild
in interface javax.swing.tree.TreeModel
parent
- a node in the tree, obtained from this data sourceindex
- The index into the parent object to location the child object.parent
at index index
public int getChildCount(java.lang.Object parent)
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.getChildCount
in interface javax.swing.tree.TreeModel
parent
- a node in the tree, obtained from this data sourceparent
public int getIndexOfChild(java.lang.Object parent, java.lang.Object child)
parent
is null
or child
is null
,
returns -1.getIndexOfChild
in interface javax.swing.tree.TreeModel
parent
- a note in the tree, obtained from this data sourcechild
- the node we are interested inchild
or parent
are null
public java.lang.Object getRoot()
null
only if the tree has no nodes.getRoot
in interface javax.swing.tree.TreeModel
public boolean isLeaf(java.lang.Object node)
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.isLeaf
in interface javax.swing.tree.TreeModel
node
- a node in the tree, obtained from this data sourcenode
is a leafpublic void removeTreeModelListener(javax.swing.event.TreeModelListener l)
addTreeModelListener
.removeTreeModelListener
in interface javax.swing.tree.TreeModel
l
- the listener to removeaddTreeModelListener(javax.swing.event.TreeModelListener)
public void valueForPathChanged(javax.swing.tree.TreePath path, java.lang.Object newValue)
path
to newValue
.
If newValue
signifies a truly new value
the model should post a treeNodesChanged
event.valueForPathChanged
in interface javax.swing.tree.TreeModel
path
- path to the node that the user has alterednewValue
- the new value from the TreeCellEditor