com.yworks.yfiles.layout.tree

Class LeafNodePlacer

java.lang.Object

com.yworks.yfiles.layout.tree.LeafNodePlacer

All Implemented Interfaces:

INodePlacer

public class LeafNodePlacer
extends Object
implements INodePlacer

A LeafNodePlacer creates a SubtreeShape for a leaf node and routes its incoming edge at the target side.

Constructor Summary

Constructors

Constructor and Description
LeafNodePlacer() Creates a new LeafNodePlacer instance with default settings.

Method Summary

Modifier and Type	Method and Description
IProcessor	createProcessor(TreeLayout layouter, LayoutGraph graph, Node currentRoot) Creates an optional IProcessor for pre- and post-processing.
void	determineChildConnectors(Node localRoot, IDataMap connectorMap) Does nothing because leaf nodes don't have children so there are no child connectors.
TreeLayout.SubtreeShape	placeSubtree(IDataProvider nodeShapeProvider, IDataProvider subtreeShapeProvider, LayoutGraph graph, Node localRoot, ParentConnectorDirection parentConnectorDirection) Creates a TreeLayout.SubtreeShape for the local root node (a leaf node in this case) and adds target points to the incoming edge.

Methods inherited from class java.lang.Object

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

Constructor Detail

LeafNodePlacer

public LeafNodePlacer()

Creates a new LeafNodePlacer instance with default settings.

Method Detail

createProcessor

public IProcessor createProcessor(TreeLayout layouter,
                                  LayoutGraph graph,
                                  Node currentRoot)

Creates an optional IProcessor for pre- and post-processing.

This implementation returns null. Hence, no pre- or post-processing is done.

Specified by:

createProcessor in interface INodePlacer

Parameters:

layouter - the current TreeLayout instance

graph - the input graph

currentRoot - the root node handled by this INodePlacer

Returns:

null

determineChildConnectors

public void determineChildConnectors(Node localRoot,
                                     IDataMap connectorMap)

Does nothing because leaf nodes don't have children so there are no child connectors.

Specified by:

determineChildConnectors in interface INodePlacer

Parameters:

localRoot - the local root node

connectorMap - the map that must be used for storing the direction specifiers of the child nodes

placeSubtree

public TreeLayout.SubtreeShape placeSubtree(IDataProvider nodeShapeProvider,
                                            IDataProvider subtreeShapeProvider,
                                            LayoutGraph graph,
                                            Node localRoot,
                                            ParentConnectorDirection parentConnectorDirection)

Creates a TreeLayout.SubtreeShape for the local root node (a leaf node in this case) and adds target points to the incoming edge.

The incoming edge is routed according to possibly assigned PortConstraints.

Specified by:

placeSubtree in interface INodePlacer

Parameters:

nodeShapeProvider - the IDataProvider for obtaining an initial shape of the root node

subtreeShapeProvider - the IDataProvider for accessing the pre-calculated shapes of the subtrees

graph - the input graph

localRoot - the root of the subtree that should be arranged by this method

parentConnectorDirection - the direction specifier for the connector of the local root node to its parent node

Returns:

the TreeLayout.SubtreeShape of the leaf node including the connector