org.nuxeo.ecm.webengine.ui.tree

Interface ContentProvider

All Superinterfaces:

Serializable

All Known Implementing Classes:

DirectoryContentProvider, DocumentContentProvider, NuxeoArtifactContentProvider

public interface ContentProvider
extends Serializable

Author:

Bogdan Stefanescu

Method Summary

Modifier and Type	Method and Description
Object[]	getChildren(Object obj) Gets the children for the given object.
Object[]	getElements(Object input) Gets the top level items.
String[]	getFacets(Object object) Gets the object facets.
String	getLabel(Object obj) Gets the label to be used when displaying the given object.
String	getName(Object obj) Gets the name of the object.
boolean	isContainer(Object obj) Whether the given object may have children (e.g it's a container).

Method Detail

getName

String getName(Object obj)

Gets the name of the object.

The name must be an unique identifier relative to the parent item. It will be used as node names in the tree so that they will construct the item path.

Parameters:

obj - the object

Returns:

the name

getLabel

String getLabel(Object obj)

Gets the label to be used when displaying the given object.

Parameters:

obj - the object

Returns:

the label

getFacets

String[] getFacets(Object object)

Gets the object facets.

Facets are arbitrary strings that should describe object capabilities and can be used to decorate later the item.

In a web environment they may be translated to CSS classes.

Returns:

item facets

isContainer

boolean isContainer(Object obj)

Whether the given object may have children (e.g it's a container).

Parameters:

obj - the object to test

Returns:

true if it may have children, false otherwise

getElements

Object[] getElements(Object input)

Gets the top level items.

The items will be shown on the top level of the tree. These items are computed from the tree input that will be considered the tree root. The tree root is not visible.

Parameters:

input - the tree view input

Returns:

the top level items

getChildren

Object[] getChildren(Object obj)

Gets the children for the given object.

This method is used to populate the nested branches of the tree.

Parameters:

obj - the object

Returns:

the children or null if no children are supported