y.view
Class Graph2DViewActions.AddPredecessorsAction

java.lang.Object
  javax.swing.AbstractAction
      y.view.Graph2DViewActions.AddPredecessorsAction

All Implemented Interfaces:

java.awt.event.ActionListener, java.io.Serializable, java.lang.Cloneable, java.util.EventListener, javax.swing.Action

Enclosing class:

Graph2DViewActions

public static class Graph2DViewActions.AddPredecessorsAction
extends javax.swing.AbstractAction

Action that adds a predecessor node to selected nodes. A predecessor node or neighbor node is a new node such that there is an edge from the new node to each selected node. To add more than a single predecessor node at once, customize the method createNeighborNodes(Graph2D, y.base.NodeList).

See Also:

Serialized Form

Field Summary

Fields inherited from class javax.swing.AbstractAction

changeSupport, enabled

Fields inherited from interface javax.swing.Action

ACCELERATOR_KEY, ACTION_COMMAND_KEY, DEFAULT, DISPLAYED_MNEMONIC_INDEX_KEY, LARGE_ICON_KEY, LONG_DESCRIPTION, MNEMONIC_KEY, NAME, SELECTED_KEY, SHORT_DESCRIPTION, SMALL_ICON

Constructor Summary

Graph2DViewActions.AddPredecessorsAction(Graph2DView view)
Initializes a new AddPredecessorsAction instance.

Method Summary

void	actionPerformed(java.awt.event.ActionEvent e) Invokes addNeighbors(Graph2DView) for the view returned by getView(e).
void	addNeighbors(Graph2DView view) Adds new neighbor nodes for the nodes returned by getReferenceNodes(Graph2D).
protected NodeList	createNeighborNodes(Graph2D graph, NodeList referenceNodes) Creates the new neighbor nodes.
protected NodeList	getReferenceNodes(Graph2D graph) Determines the nodes for which a neighbor node should be added.
protected Graph2DView	getView(java.awt.event.ActionEvent e) Determines the view in which to add new nodes.
protected void	layoutNeighborNodes(Graph2D graph, NodeList neighborNodes, NodeList referenceNodes) Calculates layout for newly created neighbor nodes.
protected void	selectNeighborNodes(Graph2D graph, NodeList neighborNodes, NodeList referenceNodes) Selects the nodes created by createNeighborNodes.

Methods inherited from class javax.swing.AbstractAction

addPropertyChangeListener, clone, firePropertyChange, getKeys, getPropertyChangeListeners, getValue, isEnabled, putValue, removePropertyChangeListener, setEnabled

Methods inherited from class java.lang.Object

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

Constructor Detail

Graph2DViewActions.AddPredecessorsAction

public Graph2DViewActions.AddPredecessorsAction(Graph2DView view)

Initializes a new AddPredecessorsAction instance.

Parameters:

view - the default view that is used if the actual view cannot be determined from the information provided by an ActionEvent.

Method Detail

actionPerformed

public void actionPerformed(java.awt.event.ActionEvent e)

Invokes addNeighbors(Graph2DView) for the view returned by getView(e).

Parameters:

e - the ActionEvent that triggers the addition of new nodes.

addNeighbors

public void addNeighbors(Graph2DView view)

Adds new neighbor nodes for the nodes returned by getReferenceNodes(Graph2D). In this context, a neighbor node is a new node such that there is an edge connecting each reference node to the new node.

Parameters:

view - the related view.

createNeighborNodes

protected NodeList createNeighborNodes(Graph2D graph,
                                       NodeList referenceNodes)

Creates the new neighbor nodes. The default implementation creates exactly one neighbor node that is connected to each of the specified reference nodes.

Parameters:

graph - the graph in which to add new nodes.

referenceNodes - the nodes to which the newly created nodes have to be connected.

Returns:

a list of newly created neighbor nodes.

getReferenceNodes

protected NodeList getReferenceNodes(Graph2D graph)

Determines the nodes for which a neighbor node should be added. The default implementation returns the currently selected nodes. Called from addNeighbors(Graph2DView).

Parameters:

graph - the graph in which to add neighbor nodes.

Returns:

a list of nodes to which new neighbor nodes have to be connected.

layoutNeighborNodes

protected void layoutNeighborNodes(Graph2D graph,
                                   NodeList neighborNodes,
                                   NodeList referenceNodes)

Calculates layout for newly created neighbor nodes. Called from addNeighbors(Graph2DView).

Parameters:

graph - the graph in which to layout new nodes.

neighborNodes - the neighbor nodes.

referenceNodes - the nodes to which the new neighbor nodes are connected.

See Also:

addNeighbors(Graph2DView)

selectNeighborNodes

protected void selectNeighborNodes(Graph2D graph,
                                   NodeList neighborNodes,
                                   NodeList referenceNodes)

Selects the nodes created by createNeighborNodes. Called from addNeighbors(Graph2DView).

Parameters:

graph - the graph in which to select neighbor nodes.

neighborNodes - the neighbor nodes.

referenceNodes - the nodes to which the new neighbor nodes are connected.

See Also:

createNeighborNodes(Graph2D, y.base.NodeList)

getView

protected Graph2DView getView(java.awt.event.ActionEvent e)

Determines the view in which to add new nodes.

Parameters:

e - the ActionEvent that triggers the addition of new nodes.

Returns:

the view in which to add new nodes.

See Also:

actionPerformed(java.awt.event.ActionEvent)