org.annotation.agschema.graphics.vtree
Class VTreeExpansionStateImpl

java.lang.Object
  org.annotation.agschema.graphics.vtree.VTreeExpansionStateImpl

All Implemented Interfaces:

java.util.EventListener, java.beans.PropertyChangeListener, VTreeExpansionState

public class VTreeExpansionStateImpl

extends java.lang.Object

implements VTreeExpansionState

A simple implementation of the expansion state. Note that when a node is collapsed all it's children if previously collapsed, will now be treated as hidden, and expanding this node will make all its children expanded. Applications should write their own expansion state tailored to their needs.

Author:

nikhild

Constructor Summary

VTreeExpansionStateImpl(javax.swing.tree.TreeNode root)
Creates a new instance of VTreeExpansionStateImpl

Method Summary

void	addListener(VTreeExpansionListener l) Add a listener to receive notification of events
void	collapse(javax.swing.tree.TreeNode node) Collapses a node.
void	expand(javax.swing.tree.TreeNode node) Expands a node
protected void	fireNodeCollapsed(javax.swing.tree.TreeNode node)
protected void	fireNodeExpanded(javax.swing.tree.TreeNode node)
javax.swing.tree.TreeNode	getRoot() Get the root of the tree
boolean	isCollapsed(javax.swing.tree.TreeNode node) Returns true iff the node is collapsed
boolean	isExpanded(javax.swing.tree.TreeNode node) Returns true iff the node is expanded
boolean	isHidden(javax.swing.tree.TreeNode node) Returns true iff an ancestor of the node is collapsed.
void	propertyChange(java.beans.PropertyChangeEvent evt)
void	removeListener(VTreeExpansionListener l) Remove the listener

Methods inherited from class java.lang.Object

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

Constructor Detail

VTreeExpansionStateImpl

public VTreeExpansionStateImpl(javax.swing.tree.TreeNode root)

Creates a new instance of VTreeExpansionStateImpl

Method Detail

collapse

public void collapse(javax.swing.tree.TreeNode node)

Description copied from interface: VTreeExpansionState

Collapses a node.

Specified by:

collapse in interface VTreeExpansionState

expand

public void expand(javax.swing.tree.TreeNode node)

Description copied from interface: VTreeExpansionState

Expands a node

Specified by:

expand in interface VTreeExpansionState

getRoot

public javax.swing.tree.TreeNode getRoot()

Description copied from interface: VTreeExpansionState

Get the root of the tree

Specified by:

getRoot in interface VTreeExpansionState

isCollapsed

public boolean isCollapsed(javax.swing.tree.TreeNode node)

Description copied from interface: VTreeExpansionState

Returns true iff the node is collapsed

Specified by:

isCollapsed in interface VTreeExpansionState

isExpanded

public boolean isExpanded(javax.swing.tree.TreeNode node)

Description copied from interface: VTreeExpansionState

Returns true iff the node is expanded

Specified by:

isExpanded in interface VTreeExpansionState

isHidden

public boolean isHidden(javax.swing.tree.TreeNode node)

Description copied from interface: VTreeExpansionState

Returns true iff an ancestor of the node is collapsed.

Specified by:

isHidden in interface VTreeExpansionState

addListener

public void addListener(VTreeExpansionListener l)

Description copied from interface: VTreeExpansionState

Add a listener to receive notification of events

Specified by:

addListener in interface VTreeExpansionState

Parameters:

l - the listener to add

removeListener

public void removeListener(VTreeExpansionListener l)

Description copied from interface: VTreeExpansionState

Remove the listener

Specified by:

removeListener in interface VTreeExpansionState

Parameters:

l - the listener to remove

fireNodeExpanded

protected void fireNodeExpanded(javax.swing.tree.TreeNode node)

fireNodeCollapsed

protected void fireNodeCollapsed(javax.swing.tree.TreeNode node)

propertyChange

public void propertyChange(java.beans.PropertyChangeEvent evt)

Specified by:

propertyChange in interface java.beans.PropertyChangeListener