org.jgraph.graph
Class GraphContext

java.lang.Object
  org.jgraph.graph.GraphContext

All Implemented Interfaces:

CellMapper

public class GraphContext
extends Object
implements CellMapper

Field Summary

protected int	cellCount Number of all descendants without ports.
protected Object[]	cells Reference to the cells.
protected Set	cellSet Set of all cells including all descendants.
protected JGraph	graph Reference to the parent graph.
protected GraphLayoutCache	graphLayoutCache Reference to the graphs GraphLayoutCache.
protected Map	views Map of (cell, view) pairs including ports.

Constructor Summary

GraphContext(JGraph graph, Object[] cells)
Constructs a graph context for cells with respect to the connections defined in the model, and the views in the view of graph.

Method Summary

boolean	contains(Object node) Returns true if node or one of its ancestors is contained in this object.
CellView	createMapping(Object cell)
CellView[]	createTemporaryCellViews() Returns an new consistent array of views for cells.
CellView[]	createTemporaryContextViews() Returns an new consistent array of views for the edges that are connected to and not contained in cells.
CellView[]	createTemporaryContextViews(Set cellSet) Returns an new consistent array of views for the edges that are connected to and not contained in cellSet.
CellView[]	createTemporaryPortViews() Returns an new consistent array of views for the ports.
ConnectionSet	disconnect(CellView[] cells) Disconnects the edges in cells from the sources and targets that are not in this context and returns a ConnectionSet that defines the disconnection.
Object[]	getCells() Returns the array that was passed to the constructor.
int	getDescendantCount() Returns the number of all objects (cells and children) in this object.
JGraph	getGraph() Returns the graph that was passed to the constructor.
CellView	getMapping(Object cell, boolean create) Returns the CellView that is mapped to cell in the graph context.
boolean	isEmpty() Returns true if this object contains no cells.
void	putMapping(Object cell, CellView view) Associates cell with view in the graph context.

Methods inherited from class java.lang.Object

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

Field Detail

graph

protected JGraph graph

Reference to the parent graph.

graphLayoutCache

protected transient GraphLayoutCache graphLayoutCache

Reference to the graphs GraphLayoutCache.

cells

protected Object[] cells

Reference to the cells.

cellSet

protected Set cellSet

Set of all cells including all descendants.

cellCount

protected int cellCount

Number of all descendants without ports.

views

protected Map views

Map of (cell, view) pairs including ports.

Constructor Detail

GraphContext

public GraphContext(JGraph graph,
                    Object[] cells)

Constructs a graph context for cells with respect to the connections defined in the model, and the views in the view of graph.

Method Detail

isEmpty

public boolean isEmpty()

Returns true if this object contains no cells.

getDescendantCount

public int getDescendantCount()

Returns the number of all objects (cells and children) in this object.

getGraph

public JGraph getGraph()

Returns the graph that was passed to the constructor.

getCells

public Object[] getCells()

Returns the array that was passed to the constructor.

contains

public boolean contains(Object node)

Returns true if node or one of its ancestors is contained in this object.

createTemporaryCellViews

public CellView[] createTemporaryCellViews()

Returns an new consistent array of views for cells.

createTemporaryPortViews

public CellView[] createTemporaryPortViews()

Returns an new consistent array of views for the ports.

createTemporaryContextViews

public CellView[] createTemporaryContextViews()

Returns an new consistent array of views for the edges that are connected to and not contained in cells.

createTemporaryContextViews

public CellView[] createTemporaryContextViews(Set cellSet)

Returns an new consistent array of views for the edges that are connected to and not contained in cellSet.

getMapping

public CellView getMapping(Object cell,
                           boolean create)

Returns the CellView that is mapped to cell in the graph context. New views are created based on whether cell is containes in the context. The create-flag is ignored.

Specified by:

getMapping in interface CellMapper

create - whether a new view should created

createMapping

public CellView createMapping(Object cell)

disconnect

public ConnectionSet disconnect(CellView[] cells)

Disconnects the edges in cells from the sources and targets that are not in this context and returns a ConnectionSet that defines the disconnection.

putMapping

public void putMapping(Object cell,
                       CellView view)

Associates cell with view in the graph context.

Specified by:

putMapping in interface CellMapper

Parameters:

cell - the cell that constitutes the model element

view - the view that constitutes the view element