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: ApplyLayoutRequest.java 70398 2014-10-22 23:44:32Z cxh $

Author:

Miro Spoenemann (msp)

Accepted Rating:

Red (msp)

Proposed Rating:

Red (msp)

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
(package private) static class	ApplyLayoutRequest.ConnectionEntry An entry that contains data for changing a connection using bend points.
(package private) static class	ApplyLayoutRequest.CurveEntry An entry that contains data for changing a curve using angular values.
(package private) static class	ApplyLayoutRequest.LocationEntry An entry that contains data for changing a location.

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and 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	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.

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.