/**
* Obtain and return the {@link ResponseStateManager} for the specified #renderKitId.
*
* @param context the {@link FacesContext} of the current request
* @param renderKitId {@link RenderKit} ID
* @return the {@link ResponseStateManager} for the specified #renderKitId
* @throws FacesException if an exception occurs while trying to obtain the <code>
* ResponseStateManager</code>
*/
public static ResponseStateManager getResponseStateManager(
FacesContext context, String renderKitId) throws FacesException {
assert (null != renderKitId);
assert (null != context);
RenderKit renderKit = context.getRenderKit();
if (renderKit == null) {
// check request scope for a RenderKitFactory implementation
RenderKitFactory factory =
(RenderKitFactory)
RequestStateManager.get(context, RequestStateManager.RENDER_KIT_IMPL_REQ);
if (factory != null) {
renderKit = factory.getRenderKit(context, renderKitId);
} else {
factory = (RenderKitFactory) FactoryFinder.getFactory(FactoryFinder.RENDER_KIT_FACTORY);
if (factory == null) {
throw new IllegalStateException();
} else {
RequestStateManager.set(context, RequestStateManager.RENDER_KIT_IMPL_REQ, factory);
}
renderKit = factory.getRenderKit(context, renderKitId);
}
}
return renderKit.getResponseStateManager();
}
/** @see javax.faces.context.FacesContext#getRenderKit() */
public RenderKit getRenderKit() {
assertNotReleased();
UIViewRoot vr = getViewRoot();
if (vr == null) {
return (null);
}
String renderKitId = vr.getRenderKitId();
if (renderKitId == null) {
return null;
}
if (renderKitId.equals(lastRkId)) {
return lastRk;
} else {
lastRk = rkFactory.getRenderKit(this, renderKitId);
if (lastRk == null) {
if (LOGGER.isLoggable(Level.SEVERE)) {
LOGGER.log(
Level.SEVERE,
"Unable to locate renderkit " + "instance for render-kit-id {0}. Using {1} instead.",
new String[] {renderKitId, RenderKitFactory.HTML_BASIC_RENDER_KIT});
}
}
lastRkId = renderKitId;
return lastRk;
}
}
private void restoreView(FacesContext context) throws FacesException {
Application app = context.getApplication();
if (app instanceof ApplicationImpl) ((ApplicationImpl) app).initRequest();
ViewHandler view = app.getViewHandler();
view.initView(context);
UIViewRoot viewRoot = context.getViewRoot();
if (viewRoot != null) {
ExternalContext extContext = context.getExternalContext();
viewRoot.setLocale(extContext.getRequestLocale());
doSetBindings(context.getELContext(), viewRoot);
return;
}
String viewId = calculateViewId(context);
String renderKitId = view.calculateRenderKitId(context);
RenderKitFactory renderKitFactory =
(RenderKitFactory) FactoryFinder.getFactory(FactoryFinder.RENDER_KIT_FACTORY);
RenderKit renderKit = renderKitFactory.getRenderKit(context, renderKitId);
ResponseStateManager stateManager = renderKit.getResponseStateManager();
if (stateManager.isPostback(context)) {
viewRoot = view.restoreView(context, viewId);
if (viewRoot != null) {
doSetBindings(context.getELContext(), viewRoot);
} else {
// XXX: backward compat issues with ViewHandler and StateManager
// throw new ViewExpiredException(L.l("{0} is an expired view", viewId));
context.renderResponse();
viewRoot = view.createView(context, viewId);
context.setViewRoot(viewRoot);
}
context.setViewRoot(viewRoot);
} else {
context.renderResponse();
viewRoot = view.createView(context, viewId);
context.setViewRoot(viewRoot);
}
}
public RenderKit getRenderKit() {
checkReleased();
UIViewRoot viewRoot = getViewRoot();
if (viewRoot == null) {
return null;
}
String renderKitId = viewRoot.getRenderKitId();
if (renderKitId == null) {
return null;
} else {
RenderKitFactory rkFactory =
(RenderKitFactory) FactoryFinder.getFactory(FactoryFinder.RENDER_KIT_FACTORY);
return rkFactory.getRenderKit(this, renderKitId);
}
}
/**
* Return the {@link RenderKit} for the current request.
*
* @param context the {@link FacesContext} of the current request
* @return the {@link RenderKit} for the current request.
*/
public static RenderKit getCurrentRenderKit(FacesContext context) {
RenderKitFactory renderKitFactory =
(RenderKitFactory) FactoryFinder.getFactory(FactoryFinder.RENDER_KIT_FACTORY);
return renderKitFactory.getRenderKit(context, context.getViewRoot().getRenderKitId());
}
/**
* @see javax.faces.view.ViewDeclarationLanguage#renderView(javax.faces.context.FacesContext,
* javax.faces.component.UIViewRoot)
*/
public void renderView(FacesContext context, UIViewRoot view) throws IOException {
// suppress rendering if "rendered" property on the component is
// false
if (!view.isRendered() || context.getResponseComplete()) {
return;
}
ExternalContext extContext = context.getExternalContext();
if (!Util.isViewPopulated(context, view)) {
buildView(context, view);
}
// set up the ResponseWriter
RenderKitFactory renderFactory =
(RenderKitFactory) FactoryFinder.getFactory(FactoryFinder.RENDER_KIT_FACTORY);
RenderKit renderKit = renderFactory.getRenderKit(context, view.getRenderKitId());
ResponseWriter oldWriter = context.getResponseWriter();
WriteBehindStateWriter stateWriter =
new WriteBehindStateWriter(
extContext.getResponseOutputWriter(), context, responseBufferSize);
ResponseWriter newWriter;
if (null != oldWriter) {
newWriter = oldWriter.cloneWithWriter(stateWriter);
} else {
newWriter =
renderKit.createResponseWriter(
stateWriter, null, extContext.getRequestCharacterEncoding());
}
context.setResponseWriter(newWriter);
// Don't call startDoc and endDoc on a partial response
if (context.getPartialViewContext().isPartialRequest()) {
doRenderView(context, view);
try {
extContext.getFlash().doPostPhaseActions(context);
} catch (UnsupportedOperationException uoe) {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.fine(
"ExternalContext.getFlash() throw UnsupportedOperationException -> Flash unavailable");
}
}
} else {
// render the view to the response
newWriter.startDocument();
doRenderView(context, view);
try {
extContext.getFlash().doPostPhaseActions(context);
} catch (UnsupportedOperationException uoe) {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.fine(
"ExternalContext.getFlash() throw UnsupportedOperationException -> Flash unavailable");
}
}
newWriter.endDocument();
}
// replace markers in the body content and write it to response.
// flush directly to the response
if (stateWriter.stateWritten()) {
stateWriter.flushToWriter();
}
// clear the ThreadLocal reference.
stateWriter.release();
if (null != oldWriter) {
context.setResponseWriter(oldWriter);
}
// write any AFTER_VIEW_CONTENT to the response
// side effect: AFTER_VIEW_CONTENT removed
ViewHandlerResponseWrapper wrapper =
(ViewHandlerResponseWrapper)
RequestStateManager.remove(context, RequestStateManager.AFTER_VIEW_CONTENT);
if (null != wrapper) {
wrapper.flushToWriter(
extContext.getResponseOutputWriter(), extContext.getResponseCharacterEncoding());
}
extContext.responseFlushBuffer();
}