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package javax.faces.render;
import java.util.
Iterator;
import javax.faces.
FacesWrapper;
import javax.faces.context.
FacesContext;
/**
* <p><strong class="changed_modified_2_0">RenderKitFactory</strong> is a
* factory object that registers
* and returns {@link RenderKit} instances. Implementations of
* JavaServer Faces must provide at least a default implementation of
* {@link RenderKit}. Advanced implementations (or external third party
* libraries) may provide additional {@link RenderKit} implementations
* (keyed by render kit identifiers) for performing different types of
* rendering for the same components.</p>
*
* <p>There must be one {@link RenderKitFactory} instance per web
* application that is utilizing JavaServer Faces. This instance can be
* acquired, in a portable manner, by calling:</p>
* <pre>
* RenderKitFactory factory = (RenderKitFactory)
* FactoryFinder.getFactory(FactoryFinder.RENDER_KIT_FACTORY);
* </pre>
*/
public abstract class
RenderKitFactory implements
FacesWrapper<
RenderKitFactory> {
public
RenderKitFactory() {
}
/**
* <p class="changed_added_2_0">If this factory has been decorated, the
* implementation doing the decorating may override this method to provide
* access to the implementation being wrapped. A default implementation
* is provided that returns <code>null</code>.</p>
*
* @since 2.0
*/
public
RenderKitFactory getWrapped() {
return null;
}
/**
* <p>The render kit identifier of the default {@link RenderKit} instance
* for this JavaServer Faces implementation.</p>
*/
public static final
String HTML_BASIC_RENDER_KIT = "HTML_BASIC";
/**
* <p>Register the specified {@link RenderKit} instance, associated with
* the specified <code>renderKitId</code>, to be supported by this
* {@link RenderKitFactory}, replacing any previously registered
* {@link RenderKit} for this identifier.</p>
*
* @param renderKitId Identifier of the {@link RenderKit} to register
* @param renderKit {@link RenderKit} instance that we are registering
*
* @throws NullPointerException if <code>renderKitId</code> or
* <code>renderKit</code> is <code>null</code>
*/
public abstract void
addRenderKit(
String renderKitId,
RenderKit renderKit);
/**
* <p>Return a {@link RenderKit} instance for the specified render
* kit identifier, possibly customized based on dynamic
* characteristics of the specified {@link FacesContext}, if
* non-<code>null</code>. If there is no registered {@link
* RenderKit} for the specified identifier, return
* <code>null</code>. The set of available render kit identifiers
* is available via the <code>getRenderKitIds()</code> method.</p>
*
* @param context FacesContext for the request currently being
* processed, or <code>null</code> if none is available.
* @param renderKitId Render kit identifier of the requested
* {@link RenderKit} instance
*
* @throws IllegalArgumentException if no {@link RenderKit} instance
* can be returned for the specified identifier
* @throws NullPointerException if <code>renderKitId</code> is
* <code>null</code>
*/
public abstract
RenderKit getRenderKit(
FacesContext context,
String renderKitId);
/**
* <p>Return an <code>Iterator</code> over the set of render kit
* identifiers registered with this factory. This set must include
* the value specified by <code>RenderKitFactory.HTML_BASIC_RENDER_KIT</code>.
* </p>
*/
public abstract
Iterator<
String>
getRenderKitIds();
}