org.isisaddons.wicket.svg.webapp.SvgWicketApplication.java Source code

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Here is the source code for org.isisaddons.wicket.svg.webapp.SvgWicketApplication.java

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/*
 *  Copyright 2013~2014 Dan Haywood
 *
 *  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.isisaddons.wicket.svg.webapp;

import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;
import java.util.List;

import javax.servlet.http.HttpServletRequest;

import com.google.common.base.Joiner;
import com.google.common.io.Resources;
import com.google.inject.AbstractModule;
import com.google.inject.Module;
import com.google.inject.name.Names;
import com.google.inject.util.Modules;
import com.google.inject.util.Providers;

import org.apache.wicket.Session;
import org.apache.wicket.request.Request;
import org.apache.wicket.request.Response;
import org.apache.wicket.request.http.WebRequest;

import org.apache.isis.viewer.wicket.viewer.IsisWicketApplication;
import org.apache.isis.viewer.wicket.viewer.integration.wicket.AuthenticatedWebSessionForIsis;

/**
 * As specified in <tt>web.xml</tt>.
 * 
 * <p>
 * See:
 * <pre>
 * &lt;filter>
 *   &lt;filter-name>wicket&lt;/filter-name>
 *    &lt;filter-class>org.apache.wicket.protocol.http.WicketFilter&lt;/filter-class>
 *    &lt;init-param>
 *      &lt;param-name>applicationClassName&lt;/param-name>
 *      &lt;param-value>webapp.SimpleApplication&lt;/param-value>
 *    &lt;/init-param>
 * &lt;/filter>
 * </pre>
 * 
 */
public class SvgWicketApplication extends IsisWicketApplication {

    private static final long serialVersionUID = 1L;

    /**
     * uncomment for a (slightly hacky) way of allowing logins using query args, eg:
     * 
     * <tt>?user=sven&pass=pass</tt>
     * 
     * <p>
     * for demos only, obvious.
     */
    private final static boolean DEMO_MODE_USING_CREDENTIALS_AS_QUERYARGS = false;

    @Override
    public Session newSession(final Request request, final Response response) {
        if (!DEMO_MODE_USING_CREDENTIALS_AS_QUERYARGS) {
            return super.newSession(request, response);
        }

        // else demo mode
        final AuthenticatedWebSessionForIsis s = (AuthenticatedWebSessionForIsis) super.newSession(request,
                response);
        final org.apache.wicket.util.string.StringValue user = request.getRequestParameters()
                .getParameterValue("user");
        final org.apache.wicket.util.string.StringValue password = request.getRequestParameters()
                .getParameterValue("pass");
        s.signIn(user.toString(), password.toString());
        return s;
    }

    @Override
    public WebRequest newWebRequest(HttpServletRequest servletRequest, String filterPath) {
        if (!DEMO_MODE_USING_CREDENTIALS_AS_QUERYARGS) {
            return super.newWebRequest(servletRequest, filterPath);
        }

        // else demo mode
        try {
            String uname = servletRequest.getParameter("user");
            if (uname != null) {
                servletRequest.getSession().invalidate();
            }
        } catch (Exception e) {
        }
        WebRequest request = super.newWebRequest(servletRequest, filterPath);
        return request;
    }

    private static final String APP_NAME = "svg (Wicket Component) Example App";

    @Override
    protected Module newIsisWicketModule() {
        final Module isisDefaults = super.newIsisWicketModule();

        final Module simpleOverrides = new AbstractModule() {
            @Override
            protected void configure() {

                bind(String.class).annotatedWith(Names.named("applicationName")).toInstance(APP_NAME);
                bind(String.class).annotatedWith(Names.named("applicationCss")).toInstance("css/application.css");
                bind(String.class).annotatedWith(Names.named("applicationJs")).toInstance("scripts/application.js");
                bind(String.class).annotatedWith(Names.named("welcomeMessage"))
                        .toInstance(readLines(getClass(), "welcome.html"));
                bind(String.class).annotatedWith(Names.named("aboutMessage")).toInstance(APP_NAME);
                bind(InputStream.class).annotatedWith(Names.named("metaInfManifest"))
                        .toProvider(Providers.of(getServletContext().getResourceAsStream("/META-INF/MANIFEST.MF")));
            }
        };

        return Modules.override(isisDefaults).with(simpleOverrides);
    }

    private static String readLines(final Class<?> contextClass, final String resourceName) {
        try {
            List<String> readLines = Resources.readLines(Resources.getResource(contextClass, resourceName),
                    Charset.defaultCharset());
            return Joiner.on("\n").join(readLines);
        } catch (IOException e) {
            return APP_NAME;
        }
    }

}