org.jgraph.graph
Class ConnectionSet

java.lang.Object
  org.jgraph.graph.ConnectionSet

All Implemented Interfaces:

Serializable

public class ConnectionSet
extends Object
implements Serializable

An object that represents a set of connections. Connections are equal, if equals returns true. Connections that are added later replace earlier connections.

Version:

1.0 1/1/02

Author:

Gaudenz Alder

See Also:

Serialized Form

Nested Class Summary

static class

ConnectionSet.Connection Object that represents the connection between an edge and a port.

Field Summary

protected Set	connections Contents of the connection set.
protected Set	edges Set of changed edges for the connection set.

Constructor Summary

ConnectionSet()
Constructs an empty ConnectionSet.

ConnectionSet(Edge edge, Port port, boolean source)
Constructs a ConnectionSet with one Connection.

ConnectionSet(Edge edge, Port source, Port target)
Constructs a ConnectionSet with two Connections (to the source and target port of the edge).

Method Summary

void	addConnections(CellView[] views) Adds the connections in views to the connection set.
ConnectionSet	clone(Map map) Creates a new connection set based on this connection set, where the edges, and ports are mapped using map.
protected static void	connect(ConnectionSet cs, Object edge, Object port, boolean source, boolean disconnect) Connect or disconnect edge from source and target in cs based on disconnect.
void	connect(Object edge, Object port, boolean source) Connect edge to port.
void	connect(Object edge, Object source, Object target) Connect edge to source and target in the connection set.
Iterator	connections() Returns an Iterator for the connections in this set.
static ConnectionSet	create(GraphModel m, Object[] cells, boolean disconnect) Returns a connection set that represents the connection or disconnection of cells in model based on disconnect.
void	disconnect(Object edge) Disconnect edge from source and target in the connection set.
void	disconnect(Object edge, boolean source) Disconnect edge from port.
Set	getChangedEdges() Returns a Set for the edges in this connection set.
Set	getConnections()
Set	getEdges()
boolean	isEmpty() Returns true if the connection set is empty.
void	setConnections(Set set)
void	setEdges(Set set)
int	size() Returns the number of (edge, port)-pairs.

Methods inherited from class java.lang.Object

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

Field Detail

connections

protected Set connections

Contents of the connection set.

edges

protected Set edges

Set of changed edges for the connection set.

Constructor Detail

ConnectionSet

public ConnectionSet()

Constructs an empty ConnectionSet.

ConnectionSet

public ConnectionSet(Edge edge,
                     Port port,
                     boolean source)

Constructs a ConnectionSet with one Connection.

ConnectionSet

public ConnectionSet(Edge edge,
                     Port source,
                     Port target)

Constructs a ConnectionSet with two Connections (to the source and target port of the edge).

Method Detail

create

public static ConnectionSet create(GraphModel m,
                                   Object[] cells,
                                   boolean disconnect)

Returns a connection set that represents the connection or disconnection of cells in model based on disconnect.

connect

protected static void connect(ConnectionSet cs,
                              Object edge,
                              Object port,
                              boolean source,
                              boolean disconnect)

Connect or disconnect edge from source and target in cs based on disconnect.

addConnections

public void addConnections(CellView[] views)

Adds the connections in views to the connection set.

connect

public void connect(Object edge,
                    Object source,
                    Object target)

Connect edge to source and target in the connection set. The previous connections between edge and its source and target are replaced in the set.

connect

public void connect(Object edge,
                    Object port,
                    boolean source)

Connect edge to port. source indicates if port is the source of edge. The previous connections between edge and its source or target in the set is replaced.

disconnect

public void disconnect(Object edge)

Disconnect edge from source and target in the connection set. The previous connections between edge and its source and target are replaced in the set.

disconnect

public void disconnect(Object edge,
                       boolean source)

Disconnect edge from port. source indicates if port is the source of edge. The previous connections between edge and its source or target in the set is replaced.

isEmpty

public boolean isEmpty()

Returns true if the connection set is empty.

size

public int size()

Returns the number of (edge, port)-pairs.

connections

public Iterator connections()

Returns an Iterator for the connections in this set.

getChangedEdges

public Set getChangedEdges()

Returns a Set for the edges in this connection set.

clone

public ConnectionSet clone(Map map)

Creates a new connection set based on this connection set, where the edges, and ports are mapped using map. If a port is not found, the old port is used. If both, the edge and the port are not in map, the entry is ignored.

Note: Consequently, unselected edges are only reconnected at the first "paste" after a "cut", because in this case the ConnectionSet is not cloned.

getConnections

public Set getConnections()

Returns:

...

getEdges

public Set getEdges()

Returns:

...

setConnections

public void setConnections(Set set)

Parameters:

set -

setEdges

public void setEdges(Set set)

Parameters:

set -