com.iizigo.navigator

Class ViewerComparator

java.lang.Object

org.eclipse.jface.viewers.ViewerComparator

org.eclipse.jface.viewers.ViewerSorter

com.iizigo.navigator.ViewerComparator

All Implemented Interfaces:

IViewerComparator

public class ViewerComparator
extends ViewerSorter
implements IViewerComparator

Class to sort nodes in a CommonViewerEx.

Author:

Christopher Mindus

Constructor Summary

Constructors

Constructor and Description
ViewerComparator() Creates a new ViewerComparator, which uses the default comparator to sort strings.

Method Summary

Modifier and Type	Method and Description
int	category(Object element) Returns the category of the given element.
int	compare(Viewer viewer, Object e1, Object e2) Returns a negative, zero, or positive number depending on whether the first element is less than, equal to, or greater than the second element.
boolean	getReverseSortOrdering() Get reverse ordering flag.
boolean	getSortByCategory() Gets sorting by category.
void	setReverseSortOrdering(boolean on) Sets reverse ordering.
void	setSortByCategory(boolean on) Sets sorting by category.

Methods inherited from class org.eclipse.jface.viewers.ViewerSorter

getCollator

Methods inherited from class org.eclipse.jface.viewers.ViewerComparator

getComparator, isSorterProperty, sort

Methods inherited from class java.lang.Object

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

Constructor Detail

ViewerComparator

public ViewerComparator()

Creates a new ViewerComparator, which uses the default comparator to sort strings.

Method Detail

setSortByCategory

public void setSortByCategory(boolean on)

Sets sorting by category.

getSortByCategory

public boolean getSortByCategory()

Gets sorting by category.

setReverseSortOrdering

public void setReverseSortOrdering(boolean on)

Sets reverse ordering.

getReverseSortOrdering

public boolean getReverseSortOrdering()

Get reverse ordering flag.

category

public int category(Object element)

Returns the category of the given element. The category is a number used to allocate elements to bins; the bins are arranged in ascending numeric order. The elements within a bin are arranged via a second level sort criterion.

Overrides:

category in class ViewerComparator

Parameters:

element - the element.

Returns:

the category.

compare

public int compare(Viewer viewer,
                   Object e1,
                   Object e2)

Returns a negative, zero, or positive number depending on whether the first element is less than, equal to, or greater than the second element.

Specified by:

compare in interface IViewerComparator

Overrides:

compare in class ViewerComparator

Parameters:

viewer - The viewer.

e1 - The first element

e2 - The second element.

Returns:

a negative number if the first element is less than the second element; the value 0 if the first element is equal to the second element; and a positive number if the first element is greater than the second element.