diva.graph.modular

Class MutableModularGraphModel

java.lang.Object

diva.graph.AbstractGraphModel

diva.graph.modular.ModularGraphModel

diva.graph.modular.MutableModularGraphModel

All Implemented Interfaces:

GraphModel, MutableGraphModel

Direct Known Subclasses:

BasicModularGraphModel

public abstract class MutableModularGraphModel
extends ModularGraphModel
implements MutableGraphModel

A modular implementation of the graph model, whereby users with heterogeneous graphs can implement the graph model interface by implementing the simple interfaces of Graph, Node, CompositeNode, and Edge.

Version:

$Revision: 1.3 $

Author:

Michael Shilman (michaels@eecs.berkeley.edu)

Field Summary

Fields inherited from class diva.graph.AbstractGraphModel

_graphListeners

Constructor Summary

Constructors

Constructor and Description
MutableModularGraphModel(Object root) Construct an empty graph model whose root is the given semantic object.

Method Summary

Modifier and Type	Method and Description
boolean	acceptHead(Object edge, Object node) Return true if the head of the given edge can be attached to the given node.
boolean	acceptTail(Object edge, Object node) Return true if the tail of the given edge can be attached to the given node.
void	addNode(Object eventSource, Object node, Object parent) Add a node to the given graph and notify listeners with a NODE_ADDED event.
void	connectEdge(Object eventSource, Object edge, Object tailNode, Object headNode) Connect the given edge to the given tail and head nodes, then dispatch events to the listeners.
void	disconnectEdge(Object eventSource, Object edge) Disconnect an edge from its two endpoints and notify graph listeners with an EDGE_HEAD_CHANGED and an EDGE_TAIL_CHANGED event.
MutableEdgeModel	getMutableEdgeModel(Object edge) Return the model for the given edge object, cast as a MutableEdgeModel.
MutableNodeModel	getMutableNodeModel(Object node) Return the node model for the given object, cast as a MutableNodeModel.
void	removeNode(Object eventSource, Object node) Delete a node from its parent graph and notify graph listeners with a NODE_REMOVED event.
void	setEdgeHead(Object eventSource, Object edge, Object head) Connect an edge to the given head node and notify listeners with an EDGE_HEAD_CHANGED event.
void	setEdgeTail(Object eventSource, Object edge, Object tail) Connect an edge to the given tail node and notify listeners with an EDGE_TAIL_CHANGED event.

Methods inherited from class diva.graph.modular.ModularGraphModel

containsNode, getCompositeModel, getEdgeModel, getHead, getNodeCount, getNodeModel, getParent, getProperty, getRoot, getSemanticObject, getTail, inEdges, isComposite, isDirected, isEdge, isNode, nodes, outEdges, setProperty, setSemanticObject

Methods inherited from class diva.graph.AbstractGraphModel

addGraphListener, dispatchGraphEvent, removeGraphListener, setDispatchEnabled

Methods inherited from class java.lang.Object

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

Methods inherited from interface diva.graph.GraphModel

addGraphListener, containsNode, dispatchGraphEvent, getHead, getNodeCount, getParent, getProperty, getRoot, getSemanticObject, getTail, inEdges, isComposite, isDirected, isEdge, isNode, nodes, outEdges, removeGraphListener, setDispatchEnabled, setProperty, setSemanticObject

Constructor Detail

MutableModularGraphModel

public MutableModularGraphModel(Object root)

Construct an empty graph model whose root is the given semantic object.

Method Detail

acceptHead

public boolean acceptHead(Object edge,
                          Object node)

Return true if the head of the given edge can be attached to the given node.

Specified by:

acceptHead in interface MutableGraphModel

acceptTail

public boolean acceptTail(Object edge,
                          Object node)

Return true if the tail of the given edge can be attached to the given node.

Specified by:

acceptTail in interface MutableGraphModel

addNode

public void addNode(Object eventSource,
                    Object node,
                    Object parent)

Add a node to the given graph and notify listeners with a NODE_ADDED event.

Specified by:

addNode in interface MutableGraphModel

Parameters:

eventSource - The source of the event that will be dispatched, e.g. the view that made this call.

connectEdge

public void connectEdge(Object eventSource,
                        Object edge,
                        Object tailNode,
                        Object headNode)

Connect the given edge to the given tail and head nodes, then dispatch events to the listeners.

Specified by:

connectEdge in interface MutableGraphModel

Parameters:

eventSource - The source of the event that will be dispatched, e.g. the view that made this call.

disconnectEdge

public void disconnectEdge(Object eventSource,
                           Object edge)

Disconnect an edge from its two endpoints and notify graph listeners with an EDGE_HEAD_CHANGED and an EDGE_TAIL_CHANGED event.

Specified by:

disconnectEdge in interface MutableGraphModel

Parameters:

eventSource - The source of the event that will be dispatched, e.g. the view that made this call.

getMutableEdgeModel

public MutableEdgeModel getMutableEdgeModel(Object edge)

Return the model for the given edge object, cast as a MutableEdgeModel. If the object is not an edge, then return null. This method assumes that the edge model for the given edge is mutable.

getMutableNodeModel

public MutableNodeModel getMutableNodeModel(Object node)

Return the node model for the given object, cast as a MutableNodeModel. If the object is not a node, then return null. This method assumes that the edge model for the given edge is mutable.

removeNode

public void removeNode(Object eventSource,
                       Object node)

Delete a node from its parent graph and notify graph listeners with a NODE_REMOVED event. This first removes all the edges that are connected to the given node, or some subnode of that node, and then sets the parent of the node to null.

Specified by:

removeNode in interface MutableGraphModel

Parameters:

eventSource - The source of the event that will be dispatched, e.g. the view that made this call.

setEdgeHead

public void setEdgeHead(Object eventSource,
                        Object edge,
                        Object head)

Connect an edge to the given head node and notify listeners with an EDGE_HEAD_CHANGED event.

Specified by:

setEdgeHead in interface MutableGraphModel

Parameters:

eventSource - The source of the event that will be dispatched, e.g. the view that made this call.

setEdgeTail

public void setEdgeTail(Object eventSource,
                        Object edge,
                        Object tail)

Connect an edge to the given tail node and notify listeners with an EDGE_TAIL_CHANGED event.

Specified by:

setEdgeTail in interface MutableGraphModel

Parameters:

eventSource - The source of the event that will be dispatched, e.g. the view that made this call.