nl.b3p.viewer.admin.stripes.ComponentConfigSourceActionBean.java Source code

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Here is the source code for nl.b3p.viewer.admin.stripes.ComponentConfigSourceActionBean.java

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/*
 * Copyright (C) 2012-2013 B3Partners B.V.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package nl.b3p.viewer.admin.stripes;

import java.io.File;
import java.io.FileInputStream;
import java.io.OutputStream;
import javax.annotation.security.RolesAllowed;
import javax.servlet.http.HttpServletResponse;
import net.sourceforge.stripes.action.*;
import net.sourceforge.stripes.validation.Validate;
import nl.b3p.viewer.components.ComponentRegistry;
import nl.b3p.viewer.components.ViewerComponent;
import nl.b3p.viewer.config.security.Group;
import org.apache.commons.io.IOUtils;
import org.json.JSONArray;
import org.json.JSONException;

/**
 *
 * @author Matthijs Laan
 */
@UrlBinding("/action/componentConfigSource")
@StrictBinding
@RolesAllowed({ Group.ADMIN, Group.APPLICATION_ADMIN })
public class ComponentConfigSourceActionBean implements ActionBean {

    private ActionBeanContext context;

    public ActionBeanContext getContext() {
        return context;
    }

    public void setContext(ActionBeanContext context) {
        this.context = context;
    }

    @Validate
    private String className;

    public String getClassName() {
        return className;
    }

    public void setClassName(String className) {
        this.className = className;
    }

    public Resolution source() {
        ViewerComponent vc = ComponentRegistry.getInstance().getViewerComponent(className);

        Resolution notFound = new ErrorResolution(HttpServletResponse.SC_NOT_FOUND);
        if (vc == null) {
            return notFound;
        }

        File[] files = vc.getConfigSources();

        long lastModified = -1;
        for (File f : files) {
            if (!f.exists() || !f.canRead()) {
                return notFound;
            }
            lastModified = Math.max(lastModified, f.lastModified());
        }
        final File[] theFiles = files;
        StreamingResolution res = new StreamingResolution("application/javascript") {
            @Override
            public void stream(HttpServletResponse response) throws Exception {

                OutputStream out = response.getOutputStream();
                for (File f : theFiles) {
                    if (theFiles.length != 1) {
                        out.write(("\n\n// Source file: " + f.getName() + "\n\n").getBytes("UTF-8"));
                    }
                    IOUtils.copy(new FileInputStream(f), out);
                }
            }
        };
        if (lastModified != -1) {
            long ifModifiedSince = context.getRequest().getDateHeader("If-Modified-Since");

            if (ifModifiedSince != -1) {
                if (ifModifiedSince >= lastModified) {
                    return new ErrorResolution(HttpServletResponse.SC_NOT_MODIFIED);
                }
            }
        }
        return res;
    }
}