y.layout.tree
Class LeftRightPlacer.LeftRightDataProvider

java.lang.Object
  y.util.DataProviderAdapter
      y.layout.tree.LeftRightPlacer.LeftRightDataProvider

All Implemented Interfaces:

DataProvider

Enclosing class:

LeftRightPlacer

public static final class LeftRightPlacer.LeftRightDataProvider
extends DataProviderAdapter

Utility class providing a method to determine if a given node is aligned left (true) or right (false) to the parent node.

Constructor Summary

LeftRightPlacer.LeftRightDataProvider(DataProvider nodePlacerMap)
Constructs a new data provider for the LeftRightPlacer.

Method Summary

boolean

getBool(Object dataHolder) Determines if the given node is "left" of its parent node.

Methods inherited from class y.util.DataProviderAdapter

defined, get, getDouble, getInt

Methods inherited from class java.lang.Object

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

Constructor Detail

LeftRightPlacer.LeftRightDataProvider

public LeftRightPlacer.LeftRightDataProvider(DataProvider nodePlacerMap)

Constructs a new data provider for the LeftRightPlacer. The nodePlacerMap is a reference to the map where the node placer for each node in the graph is stored. The node placer of a node holds its modification matrix which can be used to determine the alignment of the node to its parent (if its "left").

Method Detail

getBool

public boolean getBool(Object dataHolder)

Determines if the given node is "left" of its parent node. Left is considered as a lower x coordinate when the alignment of the nodes is vertical (north or south) and a lower y coordinate when the alignment of the nodes is horizontal (east or west).

Specified by:

getBool in interface DataProvider

Overrides:

getBool in class DataProviderAdapter

Parameters:

dataHolder - a node to check the placement to its parent node.

Returns:

true if the given node is left of its parent node.