Summary:
Methods
| [Expand All]
public
interface
ProvidesKey
| com.google.gwt.view.client.ProvidesKey<T> |
 Known Indirect Subclasses
AbstractDataProvider<T>,
AsyncDataProvider<T>,
DefaultSelectionModel<T>,
EntityProxyKeyProvider<P extends EntityProxy>,
ListDataProvider<T>,
MultiSelectionModel<T>,
NoSelectionModel<T>,
SelectionModel<T>,
SelectionModel.AbstractSelectionModel<T>,
SimpleKeyProvider<T>,
SingleSelectionModel<T>
|
Class Overview
Implementors of ProvidesKey provide a key for list items, such that
items that are to be treated as distinct (for example, for editing) have
distinct keys.
The key must implement a coherent set of equals(Object) and
hashCode() methods such that if objects A and B are to be treated as identical, then A.equals(B), B.equals(A), and A.hashCode() == B.hashCode(). If A and
B are to be treated as unequal, then it must be the case that A.equals(B) == false and B.equals(A) == false.
Public Methods
public abstract Object getKey (T item)
Get the key for a list item.
Parameters
| item | the list item |
|---|
Returns
- the key that represents the item