org.eclipse.jpt.common.ui.jface
Class ItemTreeContentProvider.Null

java.lang.Object
  org.eclipse.jpt.common.ui.jface.ItemTreeContentProvider.Null

All Implemented Interfaces:

Serializable, ItemStructuredContentProvider, ItemTreeContentProvider

Enclosing interface:

ItemTreeContentProvider

public static final class ItemTreeContentProvider.Null
extends Object
implements ItemTreeContentProvider, Serializable

A null item tree content provider that returns an empty array of elements, an empty array of children, and a null parent.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.eclipse.jpt.common.ui.jface.ItemTreeContentProvider

ItemTreeContentProvider.Manager, ItemTreeContentProvider.Null

Field Summary

static ItemTreeContentProvider

INSTANCE

Method Summary

void	dispose() Dispose the item content provider.
Object[]	getChildren() Return the item's children.
Object[]	getElements() Return the input element's elements.
Object	getParent() Return the item's parent.
boolean	hasChildren() Return whether the item has children.
static ItemTreeContentProvider	instance()
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final ItemTreeContentProvider INSTANCE

Method Detail

instance

public static ItemTreeContentProvider instance()

getElements

public Object[] getElements()

Description copied from interface: ItemStructuredContentProvider

Return the input element's elements. NB: When this method is called, the item is an input element.

Specified by:

getElements in interface ItemStructuredContentProvider

See Also:

IContentProvider.inputChanged(org.eclipse.jface.viewers.Viewer, Object, Object), IStructuredContentProvider.getElements(Object), ITreeContentProvider.getElements(Object), ITreeContentProvider.getChildren(Object)

getParent

public Object getParent()

Description copied from interface: ItemTreeContentProvider

Return the item's parent.

Specified by:

getParent in interface ItemTreeContentProvider

See Also:

ITreeContentProvider.getParent(Object)

getChildren

public Object[] getChildren()

Description copied from interface: ItemTreeContentProvider

Return the item's children.

Specified by:

getChildren in interface ItemTreeContentProvider

See Also:

ITreeContentProvider.getChildren(Object)

hasChildren

public boolean hasChildren()

Description copied from interface: ItemTreeContentProvider

Return whether the item has children.

Specified by:

hasChildren in interface ItemTreeContentProvider

See Also:

ITreeContentProvider.hasChildren(Object)

dispose

public void dispose()

Description copied from interface: ItemStructuredContentProvider

Dispose the item content provider. Remove any item listeners as appropriate.

Specified by:

dispose in interface ItemStructuredContentProvider

toString

public String toString()

Overrides:

toString in class Object