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package javax.faces.view;
import java.util.List;
import javax.faces.component.UIComponent;
/**
* <p class="changed_added_2_0">Within the declaration of a
* <em>composite component</em>, an <code>AttachedObjectTarget</code>
* allows the <em>composite component author</em> to expose the
* semantics of an inner component to the <em>page author</em> without
* exposing the rendering or implementation details of the <em>inner
* component</em>. See {@link
* ViewDeclarationLanguage#getComponentMetadata} for the context in
* which implementations of this interface are used.</p>
*
* <p class="changed_added_2_0">The implementation must ensure that
* this instance is thread safe and may be shared among different component
* trees.</p>
* <div class="changed_added_2_0">
* <p>Subinterfaces are provided for the common behavioral interfaces:
* {@link javax.faces.component.behavior.Behavior}, {@link
* javax.faces.component.ValueHolder}, {@link
* javax.faces.component.EditableValueHolder} and {@link
* javax.faces.component.ActionSource2}. The default VDL implementation
* must provide a corresponding Facelets tag handler for each of the
* subinterfaces of this interface. </p>
* </div>
*
* @since 2.0
*/
public interface AttachedObjectTarget {
/**
* <p class="changed_added_2_0">The key in the value set of the
* <em>composite component <code>BeanDescriptor</code></em>, the
* value for which is a
* <code>List<AttachedObjectTarget></code>.</p>
*/
public static final String ATTACHED_OBJECT_TARGETS_KEY =
"javax.faces.view.AttachedObjectTargets";
/**
* <p class="changed_added_2_0">Returns the
* <code>List<UIComponent></code> that this
* <code>AttachedObjectTarget</code> exposes. Each <em>attached
* object</em> exposed by the <em>composite component author</em>
* may point at multiple <code>UIComponent</code> instances within
* the composite component. This method is used by the {@link
* javax.faces.view.ViewDeclarationLanguage#retargetAttachedObjects}
* method to take the appropriate action on the attached object.</p>
*
* @param topLevelComponent the top level component for this
* composite component.
*
* @return the result as specified above
*
*/
public List<UIComponent> getTargets(UIComponent topLevelComponent);
/**
* <p class="changed_added_2_0">Returns the name by which this
* attached object target is exposed to the <em>page
* author</em>.</p>
*
*
* @return the name of the attached object target
*
*/
public String getName();
}