/**
* JBoss, Home of Professional Open Source
* Copyright 2014, Red Hat, Inc. and/or its affiliates, and individual
* contributors by the @authors tag. See the copyright.txt in the
* distribution for a full listing of individual contributors.
*
* 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 org.jboss.errai.security.client.local.nav;
import org.jboss.errai.ioc.client.lifecycle.api.Access;
import org.jboss.errai.ioc.client.lifecycle.api.LifecycleEvent;
import org.jboss.errai.ioc.client.lifecycle.api.LifecycleListener;
import org.jboss.errai.security.client.local.api.SecurityContext;
import org.jboss.errai.ui.nav.client.local.UniquePageRole;
import org.jboss.errai.ui.nav.client.local.api.LoginPage;
import org.jboss.errai.ui.nav.client.local.api.SecurityError;
import com.google.gwt.user.client.ui.IsWidget;
/**
* Listens for page navigation events and redirects if the logged in user lacks
* sufficient roles.
*
* @author Max Barkley <mbarkley@redhat.com>
*/
public class PageRoleLifecycleListener<W extends IsWidget> implements LifecycleListener<W> {
private final String[] roles;
public PageRoleLifecycleListener(final String... rolesRequiredByPage) {
this.roles = rolesRequiredByPage;
}
@Override
public void observeEvent(final LifecycleEvent<W> event) {
// There is no good way to inject the context within the bootstrapper.
final SecurityContext securityContext = SecurityContextHoldingSingleton.getSecurityContext();
if (!securityContext.isUserCacheValid() || !securityContext.hasCachedUser()
|| !securityContext.getCachedUser().hasAllRoles(roles)) {
event.veto();
final Class<? extends UniquePageRole> destination;
if (!securityContext.hasCachedUser())
destination = LoginPage.class;
else
destination = SecurityError.class;
securityContext.navigateToPage(destination);
}
}
@Override
public boolean isObserveableEventType(final Class<? extends LifecycleEvent<W>> eventType) {
return eventType.equals(Access.class);
}
}