org.globus.cog.gui.grapheditor.canvas.views.layouts
Class FlowLayout

java.lang.Object
  org.globus.cog.gui.grapheditor.canvas.views.layouts.FlowLayout

All Implemented Interfaces:

GraphLayoutEngine, GraphLayoutEngine2, StatusReporter

public class FlowLayout

extends Object

implements GraphLayoutEngine2, StatusReporter

Constructor Summary

FlowLayout()

FlowLayout(StatusManager statusManager)

Method Summary

protected void	dumpGraph(GraphInterface graph)
protected void	dumpGraph(GraphInterface graph, Writer fw)
StatusManager	getStatusManager()
Hashtable	layoutGraph(GraphInterface graph, Hashtable fixedNodes) This method takes a graph and a Hashtable with the nodes that cannot be moved and returns a Hashtable with the coordinates of the nodes after doing the layout.
protected Node	next(Node n)
protected Node	prepare(GraphInterface graph, GraphInterface old)
protected Node	prev(Node n)
protected void	reduce(GraphInterface graph)
protected boolean	reduceParallel(GraphInterface graph)
protected boolean	reduceParallelForced(GraphInterface graph)
protected boolean	reduceSequential(GraphInterface graph)
protected void	removeCycles(GraphInterface graph, Node entry)
void	setIgnoredEdges(Set ignoredEdges)
void	setStatusManager(StatusManager statusManager)
protected boolean	split(GraphInterface graph)

Methods inherited from class java.lang.Object

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

Constructor Detail

FlowLayout

public FlowLayout()

FlowLayout

public FlowLayout(StatusManager statusManager)

Method Detail

layoutGraph

public Hashtable layoutGraph(GraphInterface graph,
                             Hashtable fixedNodes)

Description copied from interface: GraphLayoutEngine

This method takes a graph and a Hashtable with the nodes that cannot be moved and returns a Hashtable with the coordinates of the nodes after doing the layout.

Specified by:

layoutGraph in interface GraphLayoutEngine

Parameters:

graph - The graph that needs to be layed out

fixedNodes - A Hashtable containing Node objects as keys, and Points as elements, which specify the coordinates of the non-movable nodes

Returns:

a Hashtable with Node objects as keys and Point objects as coordinates for the nodes.

prepare

protected Node prepare(GraphInterface graph,
                       GraphInterface old)

removeCycles

protected void removeCycles(GraphInterface graph,
                            Node entry)

split

protected boolean split(GraphInterface graph)

reduce

protected void reduce(GraphInterface graph)

dumpGraph

protected void dumpGraph(GraphInterface graph)

dumpGraph

protected void dumpGraph(GraphInterface graph,
                         Writer fw)
                  throws IOException

Throws:

IOException

reduceSequential

protected boolean reduceSequential(GraphInterface graph)

next

protected Node next(Node n)

prev

protected Node prev(Node n)

reduceParallel

protected boolean reduceParallel(GraphInterface graph)

reduceParallelForced

protected boolean reduceParallelForced(GraphInterface graph)

setIgnoredEdges

public void setIgnoredEdges(Set ignoredEdges)

Specified by:

setIgnoredEdges in interface GraphLayoutEngine2

setStatusManager

public void setStatusManager(StatusManager statusManager)

Specified by:

setStatusManager in interface StatusReporter

getStatusManager

public StatusManager getStatusManager()