net.sourceforge.toscanaj.controller.diagram
Class AttributeAdditiveNodeMovementEventListener

java.lang.Object
  net.sourceforge.toscanaj.controller.diagram.AttributeAdditiveNodeMovementEventListener

All Implemented Interfaces:

org.tockit.events.EventBrokerListener

public class AttributeAdditiveNodeMovementEventListener

extends java.lang.Object

implements org.tockit.events.EventBrokerListener

Implements node movement in a way that ensures attribute-additivity. Here is the basic idea: - identify all meet-irreducibles in the upset of the dragged node's concept - find the minimal elements in this - distribute the movement along the nodes of these concepts, moving all downsets with them The trick is that this way the movement is restricted to the interval of the dragged node and the join of the upper neighbours, which is in some way the smallest change possible. Most noticably the trivial case (only one upper neighbour) breaks down to moving just the dragged node.

Constructor Summary

AttributeAdditiveNodeMovementEventListener()

Method Summary

void	processEvent(org.tockit.events.Event e)

Methods inherited from class java.lang.Object

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

Constructor Detail

AttributeAdditiveNodeMovementEventListener

public AttributeAdditiveNodeMovementEventListener()

Method Detail

processEvent

public void processEvent(org.tockit.events.Event e)

Specified by:

processEvent in interface org.tockit.events.EventBrokerListener