homepagetool.java

java 写的一个新闻发布系统

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//    _______|  /--|    |    |    -   \  _    |    :    -   \_________
//   \\______: :---|    :    :           |    :    |         \________>
//           |__\---\_____________:______:    :____|____:_____\
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//              . . . i n   j a h i a   w e   t r u s t . . .
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//

package org.jahia.admin.homepages;

import java.io.*;
import java.util.*;

import javax.servlet.*;
import javax.servlet.http.*;

import org.jahia.bin.*;
import org.jahia.engines.copytree.*;
import org.jahia.exceptions.*;
import org.jahia.params.*;
import org.jahia.registries.*;
import org.jahia.services.homepages.*;
import org.jahia.services.pages.*;
import org.jahia.services.sites.*;
import org.jahia.utils.*;


/**
 * desc:  This class is used by the administration to choose an home page.
 *
 * Copyright:    Copyright (c) 2002
 * Company:      Jahia Ltd
 *
 * @version 1.0
 */
public class HomePageTool
{
    private static final String CLASS_NAME = HomePageTool.class.getName();
    private static final String JSP_PATH = JahiaAdministration.JSP_PATH;

    private JahiaSite jahiaSite;

    private String message = "";

    public static final String ENGINE_LAUNCHER_NAME = CLASS_NAME;

    /**
     * Default constructor.
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session.
     */
    public HomePageTool(HttpServletRequest request, HttpServletResponse response,
                        HttpSession session)
    throws Throwable
    {
        // get the current website. get the jahiaserver if it's null...
        jahiaSite = (JahiaSite)session.getAttribute(ParamBean.SESSION_SITE);
        // continue the execution of the request...
        requestDispatcher(request, response, session);
    }

    /**
     * This method is used like a dispatcher for home page tool requests.
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session.
     */
    public void requestDispatcher(HttpServletRequest request,
                                  HttpServletResponse response,
                                  HttpSession session)
    throws Throwable
    {
        String operation = request.getParameter("subaction");

        try {
            if (operation.equals("display")) {
                displayHomePageTool(request, response, session);
            } else if (operation.equals("process")) {
                processHomePageTool(request, response, session);
            }
        } catch (Throwable t) {
            JahiaConsole.printe(CLASS_NAME + ".requestDispatcher", t);
        }
    }

    /**
     * Forward the servlet request and servlet response objects, using the request
     * dispatcher (from the ServletContext). Note: please be careful, use only
     * context relative path.
     *
     * @param       request             servlet request.
     * @param       response            servlet response.
     * @param       target              target, context-relative path.
     * @exception   IOException         an I/O exception occured during the process.
     * @exception   ServletException    a servlet exception occured during the process.
     */
    private void doRedirect( HttpServletRequest   request,
                             HttpServletResponse  response,
                             HttpSession          session,
                             String               target )
    throws IOException, ServletException
    {
        try
        {
            // check null warning msg
            if( request.getAttribute("warningMsg") == null ) {
                request.setAttribute("warningMsg", "");
            }

            // check null jsp bottom message, and fill in if necessary...
            if( request.getAttribute("msg") == null ) {
                request.setAttribute("msg", Jahia.COPYRIGHT);
            }

            if( request.getAttribute("focus") == null ) {
                request.setAttribute("focus", "-none-");
            }

            // check null configuration step title, and fill in if necessary...
            if( request.getAttribute("title") == null ) {
                request.setAttribute("title", "Home Page Tool");
            }

            // redirect!
            JahiaAdministration.doRedirect(request, response, session, target);

        } catch (IOException ie) {
            JahiaConsole.println(CLASS_NAME+".doRedirect() :" , "error " + ie.getMessage());
        } catch (ServletException se) {
            JahiaConsole.println(CLASS_NAME+".doRedirect() :",  "error " + se.getMessage());
        }
    }


    private void displayHomePageTool(HttpServletRequest request,
                                     HttpServletResponse response,
                                     HttpSession session)
    throws IOException, ServletException, JahiaException
    {
        JahiaConsole.println(CLASS_NAME+".displayHomePageTool", "Started");
        // get the home page
        JahiaHomepagesService homePageService = ServicesRegistry.getInstance().getJahiaHomepagesService();
        Enumeration homePageEnumeration = homePageService.getHomepages(jahiaSite);
        request.setAttribute("homePageEnumeration", homePageEnumeration);

        // get all site pages id...
        JahiaPageBaseService pageService = JahiaPageBaseService.getInstance();
        Vector allPagesIDVector = pageService.getPageIDsInSite(jahiaSite.getID(),
            org.jahia.services.pages.PageInfoInterface.TYPE_DIRECT);
        // get all site pages infos...
        ArrayList sitePages = new ArrayList();
        Enumeration allPagesIDEnumeration = allPagesIDVector.elements();
        while (allPagesIDEnumeration.hasMoreElements()) {
            Integer pageID = (Integer)allPagesIDEnumeration.nextElement();
            sitePages.add((JahiaPage)pageService.lookupPageWhitoutTemplates(pageID.intValue()));
        }
        request.setAttribute("sitePages", sitePages);
        // get value from engineMap from the Tree Copy engine
        HashMap engineMap = (HashMap)session.getAttribute(ParamBean.SESSION_JAHIA_ENGINEMAP);
        if (engineMap != null) {
            // check if the Tree engine was opened for this source page
            String value = (String)engineMap.get(CopyTree_Engine.ENGINE_LAUNCHER_NAME);
            if (value != null && value.equals(ENGINE_LAUNCHER_NAME)) {
                // get the selected page
                request.setAttribute("pageID", engineMap.get(CopyTree_Engine.SOURCEPAGE_ID));
                // reset engine map
                session.setAttribute(ParamBean.SESSION_JAHIA_ENGINEMAP, null);
            }
        }
        request.setAttribute("jahiaSite", jahiaSite);
        request.setAttribute("jspSource", JSP_PATH + "/homepages/popup/homepagetool.jsp");
        session.setAttribute("jahiaDisplayMessage", Jahia.COPYRIGHT);
        request.setAttribute("message", message);
        doRedirect(request, response, session, JSP_PATH + "/adminpopup.jsp");
        message = "";
    }

    private void processHomePageTool(HttpServletRequest request,
                                     HttpServletResponse response,
                                     HttpSession session)
    throws IOException, ServletException, JahiaException
    {
        JahiaConsole.println(CLASS_NAME+".processHomePageTool", "Started");
        String choice = request.getParameter("choice");
        if (choice != null) {
            if (choice.equals("sitePage")) {
                String pageID = request.getParameter("pageID");
                JahiaConsole.println(CLASS_NAME+".processHomePageTool.sitePage",
                        "Site Page ID : " + pageID);
                if (pageID == null) {
                    message = "Please select one site page";
                } else {
                    session.setAttribute("homePageID", new Integer(pageID));
                    session.setAttribute("homePageLabel", JahiaPageBaseService.
                        getInstance().lookupPageWhitoutTemplates(Integer.parseInt(pageID)).getTitle());
                    request.setAttribute("suicide", "");
                }
            } else if (choice.equals("removeHomePage")) {
                session.setAttribute("homePageID", new Integer(-1));
                session.setAttribute("homePageLabel", "none");
                request.setAttribute("suicide", "");
            } else { // Home page definition
                JahiaHomepagesService homePageService =
                    ServicesRegistry.getInstance().getJahiaHomepagesService();
                String homePageDefID = request.getParameter("homePageDefID");
                JahiaHomepage homePage = homePageService.getHomepage(Integer.parseInt(homePageDefID));
                if (homePage.getType() == HomepageTypes.HOMEPAGE_LINK) {
                    JahiaConsole.println(CLASS_NAME+".processHomePageTool.HOMEPAGE_LINK",
                        "Home Page ID : " + homePageDefID);
                    JahiaHomepageLink homePageLink = (JahiaHomepageLink)homePage;
                    session.setAttribute("homePageID", new Integer(homePageLink.getPageID()));
                    session.setAttribute("homePageLabel", JahiaPageBaseService.
                        getInstance().lookupPageWhitoutTemplates(homePageLink.getPageID()).getTitle());
                } else if (homePage.getType() == HomepageTypes.HOMEPAGE_NEW) {
                    //
                } else if (homePage.getType() == HomepageTypes.HOMEPAGE_COPY) {
                    //
                }
                request.setAttribute("suicide", "");
            }
        } else {
            message = "Please choose one of the above radio boxes";
        }
        displayHomePageTool(request, response, session);
    }

}