org.apache.wicket.request.handler.resource.ResourceRequestHandler.java Source code

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Here is the source code for org.apache.wicket.request.handler.resource.ResourceRequestHandler.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.wicket.request.handler.resource;

import org.apache.wicket.Application;
import org.apache.wicket.Session;
import org.apache.wicket.authorization.IAuthorizationStrategy;
import org.apache.wicket.request.IRequestCycle;
import org.apache.wicket.request.IRequestHandler;
import org.apache.wicket.request.mapper.parameter.PageParameters;
import org.apache.wicket.request.resource.IResource;
import org.apache.wicket.settings.DefaultUnauthorizedResourceRequestListener;
import org.apache.wicket.util.lang.Args;

/**
 * Request handler that renders a resource.
 * 
 * @author Matej Knopp
 */
public class ResourceRequestHandler implements IRequestHandler {
    private final IResource resource;
    private final PageParameters parameters;

    /**
     * Construct.
     * 
     * @param resource
     * @param parameters
     */
    public ResourceRequestHandler(IResource resource, PageParameters parameters) {
        Args.notNull(resource, "resource");

        this.resource = resource;

        this.parameters = parameters != null ? parameters : new PageParameters();

        authorize();
    }

    private void authorize() {
        IAuthorizationStrategy authorizationStrategy = null;
        if (Session.exists()) {
            authorizationStrategy = Session.get().getAuthorizationStrategy();
        } else if (Application.exists()) {
            authorizationStrategy = Application.get().getSecuritySettings().getAuthorizationStrategy();
        }

        if (authorizationStrategy != null
                && authorizationStrategy.isResourceAuthorized(resource, parameters) == false) {
            if (Application.exists()) {
                Application.get().getSecuritySettings().getUnauthorizedResourceRequestListener()
                        .onUnauthorizedRequest(resource, parameters);
            } else {
                new DefaultUnauthorizedResourceRequestListener().onUnauthorizedRequest(resource, parameters);
            }
        }
    }

    /**
     * @return page parameters
     */
    public PageParameters getPageParameters() {
        return parameters;
    }

    /**
     * @return resource
     */
    public IResource getResource() {
        return resource;
    }

    /**
     * @see org.apache.wicket.request.IRequestHandler#respond(org.apache.wicket.request.IRequestCycle)
     */
    @Override
    public void respond(final IRequestCycle requestCycle) {
        IResource.Attributes a = new IResource.Attributes(requestCycle.getRequest(), requestCycle.getResponse(),
                parameters);
        resource.respond(a);
    }
}