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package javax.faces.lifecycle;
import javax.faces.FacesException;
import javax.faces.context.FacesContext;
import javax.faces.event.PhaseListener;
/**
* <p><strong class="changed_modified_2_2">Lifecycle</strong> manages the
* processing of the entire lifecycle of a particular JavaServer Faces
* request. It is responsible for executing all of the phases that have
* been defined by the JavaServer Faces Specification, in the specified
* order, unless otherwise directed by activities that occurred during
* the execution of each phase.</p>
*
* <p>An instance of <code>Lifecycle</code> is created by calling the
* <code>getLifecycle()</code> method of {@link LifecycleFactory}, for
* a specified lifecycle identifier. Because this instance is
* shared across multiple simultaneous requests, it must be implemented
* in a thread-safe manner.</p>
*/
public abstract class Lifecycle {
// ---------------------------------------------------------- Public Methods
/**
* <p>Register a new {@link PhaseListener} instance that is interested in
* being notified before and after the processing for standard phases of
* the request processing lifecycle.</p>
*
* @param listener The {@link PhaseListener} to be registered
*
* @throws NullPointerException if <code>listener</code>
* is <code>null</code>
*/
public abstract void addPhaseListener(PhaseListener listener);
/**
* <p>Execute all of the phases of the request processing lifecycle,
* up to but not including the <em>Render Response</em> phase,
* as described in the JavaServer Faces Specification, in the specified
* order. The processing flow can be affected (by the application,
* by components, or by event listeners) by calls to the
* <code>renderResponse()</code> or <code>responseComplete()</code>
* methods of the {@link FacesContext} instance associated with
* the current request.</p>
*
* @param context FacesContext for the request to be processed
*
* @throws FacesException if thrown during the execution of the
* request processing lifecycle
* @throws NullPointerException if <code>context</code>
* is <code>null</code>
*/
public abstract void execute(FacesContext context) throws FacesException;
/**
* <p class="changed_added_2_2">Create or restore the {@link
* ClientWindow} to be used to display the {@link
* javax.faces.component.UIViewRoot} for this run through the
* lifecycle. See the class documentation for {@link ClientWindow}
* for an overview of the feature.
*
* If {@link javax.faces.context.ExternalContext#getClientWindow()} returns
* null, create a new instance of <code>ClientWindow</code> using the
* {@link ClientWindowFactory}. If the result is non-null, call
* {@link ClientWindow#decode(javax.faces.context.FacesContext)} on it.
* Store the new <code>ClientWindow</code> by calling
* {@link javax.faces.context.ExternalContext#setClientWindow(javax.faces.lifecycle.ClientWindow)}.</p>
*
* @param context the {@link FacesContext} for this request.
*
* @since 2.2
*/
public void attachWindow(FacesContext context) {
}
/**
* <p>Return the set of registered {@link PhaseListener}s for this
* {@link Lifecycle} instance. If there are no registered listeners,
* a zero-length array is returned.</p>
*
* @return the set of registered {@link PhaseListener}s
*/
public abstract PhaseListener[] getPhaseListeners();
/**
* <p>Deregister an existing {@link PhaseListener} instance that is no
* longer interested in being notified before and after the processing
* for standard phases of the request processing lifecycle. If no such
* listener instance has been registered, no action is taken.</p>
*
* @param listener The {@link PhaseListener} to be deregistered
* @throws NullPointerException if <code>listener</code>
* is <code>null</code>
*/
public abstract void removePhaseListener(PhaseListener listener);
/**
* <p>Execute the <em>Render Response</em> phase of the request
* processing lifecycle, unless the <code>responseComplete()</code>
* method has been called on the {@link FacesContext} instance
* associated with the current request.</p>
*
* @param context FacesContext for the request being processed
*
* @throws FacesException if an exception is thrown during the execution
* of the request processing lifecycle
* @throws NullPointerException if <code>context</code>
* is <code>null</code>
*/
public abstract void render(FacesContext context) throws FacesException;
}