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Java Source Code / Java Documentation » Database Client » prefuse » prefuse.visual.sort

Source Cross Reference

Class Diagram

Java Document (Java Doc)

java.lang .Object

prefuse.visual.sort .ItemSorter

All known Subclasses:   prefuse.visual.sort .TreeDepthItemSorter,
ItemSorter
public class ItemSorter implements Comparator(Code)
ItemSorter instances provide an integer score for each VisualItem; these scores are then used to sort the items in ascending order of score. ItemSorters are used to determine the rendering order of items in a Display.
author:
   jeffrey heer

Field Summary
final protected static int AGGREGATE

final protected static int DECORATOR

final protected static int EDGE

final protected static int ITEM


Method Summary
public int compare(VisualItem v1, VisualItem v2)
     Compare two items based on their ordering scores.
public int compare(Object o1, Object o2)

public int score(VisualItem item)

Return an ordering score for an item.

Field Detail
AGGREGATE
final protected static int AGGREGATE(Code)

DECORATOR
final protected static int DECORATOR(Code)

EDGE
final protected static int EDGE(Code)

ITEM
final protected static int ITEM(Code)

Method Detail
compare
public int compare(VisualItem v1, VisualItem v2)(Code)
Compare two items based on their ordering scores. Calls the ItemSorter.score(VisualItem) on each item and compares the result.
Parameters:
  v1 - the first VisualItem to compare
Parameters:
  v2 - the second VisualItem to compare -1 if score(v1) < score(v2), 1 if score(v1) > score(v2)and 0 if score(v1) == score(v2).

compare
public int compare(Object o1, Object o2)(Code)

See Also:   java.util.Comparator.compare(java.lang.Objectjava.lang.Object)
See Also:   ItemSorter.compare(VisualItem,VisualItem)

score
public int score(VisualItem item)(Code)

Return an ordering score for an item. The default scoring imparts the following order: hover items > highlighted items > items in the prefuse.Visualization.FOCUS_ITEMS set > prefuse.Visualization.SEARCH_ITEMS set > DecoratorItem instances > normal VisualItem instances. A zero score is returned for normal items, with scores starting at 1<<27 for other items, leaving the number range beneath that value open for additional nuanced scoring.

Subclasses can override this method to provide custom sorting criteria.

Parameters:
  item - the VisualItem to provide an ordering score the ordering score

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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