Package ptolemy.vergil.basic.layout.kieler

Class ApplyLayoutRequest

java.lang.Object

ptolemy.kernel.util.ChangeRequest

ptolemy.vergil.basic.layout.kieler.ApplyLayoutRequest

public class ApplyLayoutRequest
extends ChangeRequest

A change request specialized for application of automatically computed layout. This is used to set new locations for graph elements and to set layout hints for connection routing.

Since:

Ptolemy II 10.0

Version:

$Id$

Author:

Miro Spoenemann (msp)

Pt.AcceptedRating:

Red (msp)

Pt.ProposedRating:

Red (msp)

Constructor Summary

Constructors

Constructor	Description
ApplyLayoutRequest(java.lang.Object source)	Create a request for applying layout.

Method Summary

Modifier and Type	Method	Description
protected void	_execute()	Execute the request.
void	addConnection(Relation relation, NamedObj head, NamedObj tail, double[] bendPoints)	Add a new connection routing change to the request.
void	addConnection(Relation relation, NamedObj head, NamedObj tail, double[] bendPoints, java.awt.geom.Point2D.Double labelLocation)	Add a new connection routing change to the request.
void	addCurve(Transition transition, double exitAngle)	Add a new transition curve change to the request.
void	addLocation(Locatable locatable, double x, double y)	Add a new location change to the request.

Methods inherited from class ptolemy.kernel.util.ChangeRequest

addChangeListener, execute, getDescription, getLocality, getSource, isErrorReported, isPersistent, isStructuralChange, removeChangeListener, setDescription, setErrorReported, setListeners, setPersistent, waitForCompletion

Methods inherited from class java.lang.Object

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

Constructor Detail

ApplyLayoutRequest

public ApplyLayoutRequest(java.lang.Object source)

Create a request for applying layout.

Parameters:

source - The source object, which is typically the parent composite actor.

Method Detail

addLocation

public void addLocation(Locatable locatable,
                        double x,
                        double y)

Add a new location change to the request.

Parameters:

locatable - The locatable that will be changed

x - The new x coordinate

y - The new y coordinate

addConnection

public void addConnection(Relation relation,
                          NamedObj head,
                          NamedObj tail,
                          double[] bendPoints)

Add a new connection routing change to the request.

Parameters:

relation - The relation that owns the connection.

head - The head object of the connection.

tail - The tail object of the connection.

bendPoints - The new bend points.

addConnection

public void addConnection(Relation relation,
                          NamedObj head,
                          NamedObj tail,
                          double[] bendPoints,
                          java.awt.geom.Point2D.Double labelLocation)

Add a new connection routing change to the request.

Parameters:

relation - The relation that owns the connection.

head - The head object of the connection.

tail - The tail object of the connection.

bendPoints - The new bend points.

labelLocation - The location of a label, may be null

addCurve

public void addCurve(Transition transition,
                     double exitAngle)

Add a new transition curve change to the request.

Parameters:

transition - The transition that is represented by the curve.

exitAngle - The new value for the exit angle.

_execute

protected void _execute()
                 throws java.lang.Exception

Execute the request. This sets the previously configured locations and connections.

Specified by:

_execute in class ChangeRequest

Throws:

java.lang.Exception - If the change fails.