Class GraphLayout<N,E>

java.lang.Object

org.netbeans.api.visual.graph.layout.GraphLayout<N,E>

Direct Known Subclasses:

GridGraphLayout, TreeGraphLayout

public abstract class GraphLayout<N,E>
extends Object

This class represents a graph-orinted layout. The layout is invoked using layoutGraph methods. The layoutNodes method could be called for resolving locations of a sub-set of all nodes.

Internally the invoked method creates an UniversalGraph from the scene in the arguments. Then it calls the particular (performGraphLayout or performNodesLayout) methods with the UniversalGraph as a parameter. These protected methods are implemented by the GraphLayout based class and performs particular layout using an UniversalGraph.

Constructor Summary

Constructors

Constructor	Description
GraphLayout()

Method Summary

Modifier and Type	Method	Description
final void	addGraphLayoutListener(GraphLayoutListener<N,E> listener)	Adds a graph layout listener.
final boolean	isAnimated()	Returns whether the layout uses animations.
final void	layoutGraph(GraphPinScene<N,E,?> graphPinScene)	Invokes graph-oriented layout on a GraphPinScene.
final void	layoutGraph(GraphScene<N,E> graphScene)	Invokes graph-oriented layout on a GraphScene.
final void	layoutNodes(GraphPinScene<N,E,?> graphPinScene, Collection<N> nodes)	Invokes resolving of locations for a collection of nodes in a GraphPinScene.
final void	layoutNodes(GraphScene<N,E> graphScene, Collection<N> nodes)	Invokes resolving of locations for a collection of nodes in a GraphScene.
protected abstract void	performGraphLayout(UniversalGraph<N,E> graph)	Implements and performs particular graph-oriented algorithm of a UniversalGraph.
protected abstract void	performNodesLayout(UniversalGraph<N,E> graph, Collection<N> nodes)	Implements and performs particular location resolution of a collection of nodes in a UniversalGraph.
final void	removeGraphLayoutListener(GraphLayoutListener<N,E> listener)	Removes a graph layout listener.
final void	setAnimated(boolean animated)	Sets whether the layout is animated.
protected final void	setResolvedNodeLocation(UniversalGraph<N,E> graph, N node, Point newPreferredLocation)	Should be called to set a new resolved preferred location of a node.

Methods inherited from class java.lang.Object

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

Constructor Details

GraphLayout

public GraphLayout()

Method Details

isAnimated

public final boolean isAnimated()

Returns whether the layout uses animations.

Returns:

true if animated

setAnimated

public final void setAnimated(boolean animated)

Sets whether the layout is animated.

Parameters:

animated - if true, then the layout is animated

addGraphLayoutListener

public final void addGraphLayoutListener(GraphLayoutListener<N,E> listener)

Adds a graph layout listener.

Parameters:

listener - the graph layout listener

removeGraphLayoutListener

public final void removeGraphLayoutListener(GraphLayoutListener<N,E> listener)

Removes a graph layout listener.

Parameters:

listener - the graph layout listener

layoutGraph

public final void layoutGraph(GraphScene<N,E> graphScene)

Invokes graph-oriented layout on a GraphScene.

Parameters:

graphScene - the graph scene

layoutGraph

public final void layoutGraph(GraphPinScene<N,E,?> graphPinScene)

Invokes graph-oriented layout on a GraphPinScene.

Parameters:

graphPinScene - the graph pin scene

layoutNodes

public final void layoutNodes(GraphScene<N,E> graphScene,
 Collection<N> nodes)

Invokes resolving of locations for a collection of nodes in a GraphScene.

Parameters:

graphScene - the graph scene

nodes - the collection of nodes to resolve

layoutNodes

public final void layoutNodes(GraphPinScene<N,E,?> graphPinScene,
 Collection<N> nodes)

Invokes resolving of locations for a collection of nodes in a GraphPinScene.

Parameters:

graphPinScene - the graph pin scene

nodes - the collection of nodes to resolve

setResolvedNodeLocation

protected final void setResolvedNodeLocation(UniversalGraph<N,E> graph,
 N node,
 Point newPreferredLocation)

Should be called to set a new resolved preferred location of a node.

Parameters:

graph - the universal graph

node - the node with resolved location

newPreferredLocation - the new resolved location

performGraphLayout

protected abstract void performGraphLayout(UniversalGraph<N,E> graph)

Implements and performs particular graph-oriented algorithm of a UniversalGraph. Call GraphLayout.setResolvedNodeLocation method for setting the resolved node location.

Parameters:

graph - the universal graph on which the layout should be performed

performNodesLayout

protected abstract void performNodesLayout(UniversalGraph<N,E> graph,
 Collection<N> nodes)

Implements and performs particular location resolution of a collection of nodes in a UniversalGraph. Call GraphLayout.setResolvedNodeLocation method for setting the resolved node location.

Parameters:

graph - the universal graph on which the nodes should be resolved

nodes - the collection of nodes to be resolved