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);
}
}
static final String evalString(ValueExpression expr, FacesContext context) {
try {
return (String) expr.getValue(context.getELContext());
} catch (ELException e) {
throw new FacesException(e);
}
}
static final int evalInt(ValueExpression expr, FacesContext context) {
try {
return (Integer) expr.getValue(context.getELContext());
} catch (ELException e) {
throw new FacesException(e);
}
}
static ValueExpression restore(Object value, Class type, FacesContext context) {
if (value == null) return null;
String expr = (String) value;
Application app = context.getApplication();
ExpressionFactory factory = app.getExpressionFactory();
return factory.createValueExpression(context.getELContext(), expr, type);
}
static final boolean evalBoolean(ValueExpression expr, FacesContext context) {
try {
Object value = expr.getValue(context.getELContext());
if (value == null) return false;
else if (value instanceof Boolean) return ((Boolean) value).booleanValue();
else if (value instanceof String) return "true".equalsIgnoreCase((String) value);
else return false;
} catch (ELException e) {
throw new FacesException(e);
}
}
static ValueExpression restoreWithType(Object value, FacesContext context) {
if (value == null) return null;
Object[] state = (Object[]) value;
String expr = (String) state[0];
Class type = (Class) state[1];
Application app = context.getApplication();
ExpressionFactory factory = app.getExpressionFactory();
return factory.createValueExpression(context.getELContext(), expr, type);
}