prolog.treeview
Class Node

java.lang.Object
  |
  +--prolog.treeview.Node

Direct Known Subclasses:

RootNode

public class Node

extends java.lang.Object

the node class implements a node storing a object as value. this class also contains a static renderer map mapping a Class to a renderer. So the node knows how to render the content.

Field Summary

protected java.util.List	childs list of all childs of this node
protected java.lang.Object	content the user content stored in this node
protected static INodeRenderer	defaultRenderer is the default renderer used when no renderer was found in the renderer map
protected static java.util.Map	gvNodeRendererMap static node renderer map, key is a node object's class and value is the INodeRenderer
protected Node	parent the parent node of this node
protected java.awt.Rectangle	rect the nodes layout in the tree space

Constructor Summary

Node()
constructor

Node(Node parent)
constructor

Node(java.lang.String userString)
constructor - the userString will become the node's user object

Method Summary

void	addChild(Node node) adds a child node to this node
protected boolean	fireTreeChanged() relayouts and repaints the tree
void	genXml(java.io.Writer out) generates a xml representation of this object
java.awt.Point	getCenter() returns the point in the center of this node in tree space
java.awt.Point	getCenterBottom() returns the point in the middle+bottom of this node in tree space
java.awt.Point	getCenterTop() returns the point in the middle+top of this node in tree space
Node	getChild(int index) return the node at the specified index
int	getChildCount() returns the number of childs direct of this node
java.util.Iterator	getChilds() returns a iterator over all childs
java.lang.Object	getContent() return the content of this map
static INodeRenderer	getDefaultRenderer() returns the default rederer used to render unknown content.
java.awt.Dimension	getDimension() calculates the dimension this node requires in tree space
int	getMaximalHeight() recursive method calculating the height of this node and all childs required for rendering.
int	getMaximalWidth() recursive method calculating the with this node requires for rendering
Node	getParent() returns the parent of this node
java.awt.Rectangle	getRect() returns the rect of this node in tree space
static INodeRenderer	getRenderer(java.lang.Class key) returns a renderer (if one was found) from the renderer map
RootNode	getRoot() returns the root of this node
Tree	getTree() returns the tree this node is contained in
boolean	hasChild(Node node) returns true if the given node is a direct child of this node
void	paint(java.awt.Graphics2D g) paints this node and all recursive childs
void	paintLine(java.awt.Graphics2D g) paints all lines between all recursive childs
void	recursiveDimensionUpdate() recaltulates and caches the space required by the renderer to render this node.
static void	registerRenderer(java.lang.Class key, INodeRenderer renderer) registers a INodeRenderer for a specified Node content
void	removeChild(Node node) removes the specified child node from this node
void	setContent(java.lang.Object content) sets the content of this map
void	setParent(Node parent) sets the parent of this node
java.lang.String	toString() returns a string representation of this object

Methods inherited from class java.lang.Object

, clone, equals, finalize, getClass, hashCode, notify, notifyAll, registerNatives, wait, wait, wait

Field Detail

gvNodeRendererMap

protected static java.util.Map gvNodeRendererMap

static node renderer map, key is a node object's class and value is the INodeRenderer

defaultRenderer

protected static INodeRenderer defaultRenderer

is the default renderer used when no renderer was found in the renderer map

rect

protected java.awt.Rectangle rect

the nodes layout in the tree space

childs

protected java.util.List childs

list of all childs of this node

parent

protected Node parent

the parent node of this node

content

protected java.lang.Object content

the user content stored in this node

Constructor Detail

Node

public Node()

constructor

Node

public Node(java.lang.String userString)

constructor - the userString will become the node's user object

Parameters:

s -

Node

public Node(Node parent)

constructor

Parameters:

parent -

Method Detail

getParent

public Node getParent()

returns the parent of this node

setParent

public void setParent(Node parent)

sets the parent of this node

getContent

public java.lang.Object getContent()

return the content of this map

setContent

public void setContent(java.lang.Object content)

sets the content of this map

addChild

public void addChild(Node node)

adds a child node to this node

removeChild

public void removeChild(Node node)

removes the specified child node from this node

getChildCount

public int getChildCount()

returns the number of childs direct of this node

hasChild

public boolean hasChild(Node node)

returns true if the given node is a direct child of this node

getChild

public Node getChild(int index)

return the node at the specified index

getChilds

public java.util.Iterator getChilds()

returns a iterator over all childs

getRoot

public RootNode getRoot()

returns the root of this node

getTree

public Tree getTree()

returns the tree this node is contained in

getRect

public java.awt.Rectangle getRect()

returns the rect of this node in tree space

paint

public void paint(java.awt.Graphics2D g)

paints this node and all recursive childs

paintLine

public void paintLine(java.awt.Graphics2D g)

paints all lines between all recursive childs

getDimension

public java.awt.Dimension getDimension()

calculates the dimension this node requires in tree space

recursiveDimensionUpdate

public void recursiveDimensionUpdate()

recaltulates and caches the space required by the renderer to render this node.

getCenter

public java.awt.Point getCenter()

returns the point in the center of this node in tree space

getCenterTop

public java.awt.Point getCenterTop()

returns the point in the middle+top of this node in tree space

getCenterBottom

public java.awt.Point getCenterBottom()

returns the point in the middle+bottom of this node in tree space

toString

public java.lang.String toString()

returns a string representation of this object

Overrides:

toString in class java.lang.Object

fireTreeChanged

protected boolean fireTreeChanged()

relayouts and repaints the tree

genXml

public void genXml(java.io.Writer out)
            throws java.io.IOException

generates a xml representation of this object

registerRenderer

public static void registerRenderer(java.lang.Class key,
                                    INodeRenderer renderer)

registers a INodeRenderer for a specified Node content

Parameters:

key -

renderer -

getRenderer

public static INodeRenderer getRenderer(java.lang.Class key)

returns a renderer (if one was found) from the renderer map

Parameters:

key -

Returns:

getDefaultRenderer

public static INodeRenderer getDefaultRenderer()

returns the default rederer used to render unknown content.

getMaximalHeight

public int getMaximalHeight()

recursive method calculating the height of this node and all childs required for rendering.

getMaximalWidth

public int getMaximalWidth()

recursive method calculating the with this node requires for rendering