org.htmlparser.parserapplications.filterbuilder

Class HtmlTreeModel

Implemented Interfaces:
TreeModel

public class HtmlTreeModel
extends Object
implements TreeModel

Quick and dirty tree model for HTML nodes.

Field Summary

protected Node
mRoot
The root Node.
protected Vector
mTreeListeners
The list of tree listeners.

Constructor Summary

HtmlTreeModel(NodeList root)
Create an HTML tree view.

Method Summary

void
addTreeModelListener(TreeModelListener l)
Adds a listener for the TreeModelEvent posted after the tree changes.
Object
getChild(Object parent, int index)
Returns the child of parent at index index in the parent's child array.
int
getChildCount(Object parent)
Returns the number of children of parent.
int
getIndexOfChild(Object parent, Object child)
Returns the index of child in parent.
Object
getRoot()
Returns the root of the tree.
boolean
isLeaf(Object node)
Returns true if node is a leaf.
void
removeTreeModelListener(TreeModelListener l)
Removes a listener previously added with addTreeModelListener().
void
valueForPathChanged(TreePath path, Object newValue)
Messaged when the user has altered the value for the item identified by path to newValue.

Field Details

mRoot

protected Node mRoot
The root Node.

mTreeListeners

protected Vector mTreeListeners
The list of tree listeners.

Constructor Details

HtmlTreeModel

public HtmlTreeModel(NodeList root)
Create an HTML tree view.
Parameters:
root - The nodes at the root of the tree (the nodes are wrapped in an Html node that is never seen because it's the root, but this makes all downstream processing super-simple because every tree node is then a Node, not sometimes a NodeList at the root).

Method Details

addTreeModelListener

public void addTreeModelListener(TreeModelListener l)
Adds a listener for the TreeModelEvent posted after the tree changes.
Parameters:
l -

getChild

public Object getChild(Object parent,
                       int index)
Returns the child of parent at index index in the parent's child array.
Parameters:
parent -
index -
Returns:

getChildCount

public int getChildCount(Object parent)
Returns the number of children of parent.
Parameters:
parent -
Returns:

getIndexOfChild

public int getIndexOfChild(Object parent,
                           Object child)
Returns the index of child in parent.
Parameters:
parent -
child -
Returns:

getRoot

public Object getRoot()
Returns the root of the tree.
Returns:

isLeaf

public boolean isLeaf(Object node)
Returns true if node is a leaf.
Parameters:
node -
Returns:

removeTreeModelListener

public void removeTreeModelListener(TreeModelListener l)
Removes a listener previously added with addTreeModelListener().
Parameters:
l -

valueForPathChanged

public void valueForPathChanged(TreePath path,
                                Object newValue)
Messaged when the user has altered the value for the item identified by path to newValue.
Parameters:
path -
newValue -

HTML Parser is an open source library released under LGPL. SourceForge.net