/***
* Copyright (c) 2009 Caelum - www.caelum.com.br/opensource
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package br.com.caelum.vraptor.view;
import static br.com.caelum.vraptor.view.Results.logic;
import static br.com.caelum.vraptor.view.Results.page;
import java.util.ArrayList;
import net.vidageek.mirror.dsl.Mirror;
import br.com.caelum.vraptor.Result;
import br.com.caelum.vraptor.core.Localization;
import br.com.caelum.vraptor.http.MutableRequest;
import br.com.caelum.vraptor.http.ParametersProvider;
import br.com.caelum.vraptor.http.route.MethodNotAllowedException;
import br.com.caelum.vraptor.http.route.ResourceNotFoundException;
import br.com.caelum.vraptor.http.route.Router;
import br.com.caelum.vraptor.ioc.Component;
import br.com.caelum.vraptor.resource.HttpMethod;
import br.com.caelum.vraptor.resource.ResourceMethod;
import br.com.caelum.vraptor.validator.Message;
@Component
public class DefaultRefererResult implements RefererResult {
private final MutableRequest request;
private final Result result;
private final Router router;
private final ParametersProvider provider;
private final Localization localization;
public DefaultRefererResult(Result result, MutableRequest request, Router router,
ParametersProvider provider, Localization localization) {
this.result = result;
this.request = request;
this.router = router;
this.provider = provider;
this.localization = localization;
}
public void forward() throws IllegalStateException {
String referer = getReferer();
try {
ResourceMethod method = router.parse(referer, HttpMethod.GET, request);
executeMethod(method, result.use(logic()).forwardTo(method.getResource().getType()));
} catch (ResourceNotFoundException e) {
result.use(page()).forwardTo(referer);
} catch (MethodNotAllowedException e) {
result.use(page()).forwardTo(referer);
}
}
private void executeMethod(ResourceMethod method, Object instance) {
new Mirror().on(instance).invoke().method(method.getMethod())
.withArgs(provider.getParametersFor(method, new ArrayList<Message>(), localization.getBundle()));
}
public void redirect() throws IllegalStateException {
String referer = getReferer();
try {
ResourceMethod method = router.parse(referer, HttpMethod.GET, request);
executeMethod(method, result.use(logic()).redirectTo(method.getResource().getType()));
} catch (ResourceNotFoundException e) {
result.use(page()).redirectTo(referer);
} catch (MethodNotAllowedException e) {
result.use(page()).redirectTo(referer);
}
}
private String getReferer() {
String referer = request.getHeader("Referer");
if (referer == null) {
throw new IllegalStateException("The Referer header was not specified");
}
String path = request.getContextPath();
return referer.substring(referer.indexOf(path) + path.length());
}
}