managehomepages.java

java 写的一个新闻发布系统

            request.setAttribute("warningMsg","The source page you choose is not available");
            return false;
        }

        value = (String) request.getParameter("destpageid");
        if ( value != null ){
            pageID = Integer.parseInt(value);

            try {
                if ( pageID != -1 )
                    destPage = (JahiaPage)pageService
                            .lookupPageWhitoutTemplates(pageID);
            } catch ( Throwable t ){
                t.printStackTrace();
            }
        }

        if ( destPage == null ){
            request.setAttribute("warningMsg","The destination page you choose is not available");
            return false;
        }

        if ( destPage.getID() == selectedPage.getID() ){
            request.setAttribute("warningMsg","The destination page cannot be same as the source page");
            return false;
        }

        value = (String) request.getParameter("depthtype");
        if ( value != null ){
            depthType = Integer.parseInt(value);
        }

        if ( depthType == 2 ){
            depth = 0;
        } else {
            value = (String) request.getParameter("depth");
            if ( value != null ){
                depth = Integer.parseInt(value);
            }
        }
        if ( depth < 0 ){
            request.setAttribute("warningMsg","Invalid Depth value");
            return false;
        }

        JahiaHomepageCopy hp = (JahiaHomepageCopy)session.getAttribute("homepageBean");
        if ( hp == null ){
            throw new JahiaException(CLASS_NAME+".saveCopy",
                                        "Homepage bean not found in session",
                                        JahiaException.ERROR,
                                        JahiaException.ERROR);
        }

        hp.setPageID(selectedPage.getID());
        hp.setParentPageID(destPage.getID());
        hp.setCopyDepth(depth);
        //hpServ.saveHomepage(hp,site.getAclID());

        if ( true ){ // disallow save
            // well as it is not implemented yet completely	, let's display a warning msg about that
            request.setAttribute("warningMsg","This type of home page definition is not implemented yet.");
            return false;
        }

        return true;
    }

    //--------------------------------------------------------------------------
    /**
     * Save a homepage of type new.
     *
     * @author  Khue Nguyen
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session for the current user.
     */
    private boolean saveNew(		HttpServletRequest    request,
                                HttpServletResponse   response,
                                HttpSession           session )
    throws IOException, ServletException, JahiaException
    {

        JahiaPageBaseService pageService = JahiaPageBaseService.getInstance();

        // retrieve previous form values...
        JahiaPage selectedPage = null;

        String value = (String) request.getParameter("destpageid");
        int pageID = -1;
        if ( value != null ){
            pageID = Integer.parseInt(value);

            try {
                if ( pageID != -1 )
                    selectedPage = (JahiaPage)pageService
                            .lookupPageWhitoutTemplates(pageID);
            } catch ( Throwable t ){
                t.printStackTrace();
            }
        }

        if ( selectedPage == null ){
            request.setAttribute("warningMsg","The page you choose is not available");
            return false;
        }

        value = (String) request.getParameter("template");
        int templateID = -1;
        if ( value != null ){
            templateID = Integer.parseInt(value);
        }

        JahiaPageDefinition pageDef = null;
        try {
            pageDef = ServicesRegistry.getInstance()
            .getJahiaPageTemplateService().lookupPageTemplate(templateID);
        } catch ( Throwable t ){
            t.printStackTrace();
        }

        if ( pageDef == null ){
            request.setAttribute("warningMsg","Please choose another template.");
            return false;
        }

        JahiaHomepageNew hp = (JahiaHomepageNew)session.getAttribute("homepageBean");
        if ( hp == null ){
            throw new JahiaException(CLASS_NAME+".saveCopy",
                                        "Homepage bean not found in session",
                                        JahiaException.ERROR,
                                        JahiaException.ERROR);
        }

        hp.setParentPageID(pageID);
        hp.setTemplateID(templateID);
        //hpServ.saveHomepage(hp,site.getAclID());

        if ( true ) { // disallow save
            // well as it is not implemented yet completely	, let's display a warning msg about that
            request.setAttribute("warningMsg","This type of home page definition is not implemented yet.");
            return false;
        }

        return true;

    }


    //--------------------------------------------------------------------------
    /**
     * Display the form detail of a homepage.
     *
     * @author  Khue Nguyen
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session for the current user.
     */
    private void displayDetail(	HttpServletRequest    request,
                                HttpServletResponse   response,
                                HttpSession           session )
    throws IOException, ServletException, JahiaException
    {
        JahiaConsole.println(CLASS_NAME+".displayDetail","Started");

        JahiaHomepage hp = null;

        String value = request.getParameter("hpid");
        if ( value != null ){

            JahiaHomepage oriHp = hpServ.getHomepage(Integer.parseInt(value));
            if ( oriHp == null ){
                displayError(request,response,"Cannot found the requested homepage ["+value+"]");
                return;
            }
            hp = ( JahiaHomepage ) oriHp.clone();
            session.setAttribute("homepageBean",hp);
        }

        hp = (JahiaHomepage)session.getAttribute("homepageBean");
        if ( hp == null ){
            displayError(request,response,"Cannot found the requested homepage ["+value+"]");
            return;
        }

        String go = request.getParameter("go");
        if ( go == null )
            go = "";

        // set the default action
        request.setAttribute("subAction","detail");
        // set the default step
        if ( go.equals("") )
            go = "change";
        request.setAttribute("go",go);


        if ( go.equals("delete") ){
            String confirm = request.getParameter("confirmdelete");
            if ( confirm == null ){
                request.setAttribute("includeSpecificSection","delete");
                doRedirect(request,response,JSP+"delete");
                return;
            }

            if (processDelete(hp)){
                displayMain(request,response,session);
                return;
            } else {
                displayError(request,response,"An error occurred while deleting the home page");
            }
        }

        if ( go.equals("save") || go.equals("change") ){

            // retrieve submitted Data
            value = request.getParameter("name");
            if ( value != null )
                hp.setName(value);

            value = request.getParameter("descr");
            if ( value != null )
                hp.setDescr(value);
        }

        if ( go.equals("save") ){

            boolean error = false;

            if (hp.getName() == null || hp.getName().trim().equals("") ){
                request.setAttribute("warningMsg","A name is required");
                error = true;
            }

            if ( !error ){
                // specific homepage save
                if ( hp.getType() == HomepageTypes.HOMEPAGE_LINK ){
                    error = !saveLink( request, response, session );
                } else if ( hp.getType() == HomepageTypes.HOMEPAGE_COPY ){
                    error = !saveCopy( request, response, session );
                } else if ( hp.getType() == HomepageTypes.HOMEPAGE_NEW ){
                    error = !saveNew( request, response, session );
                }
            }

            if ( !error ){
                // reset session
                session.setAttribute("homepageBean",null);
                displayMain( request, response, session );
                return;
            }
        }

        if ( hp.getType() == HomepageTypes.HOMEPAGE_LINK ){
            prepareAddLink(request,response,session);
        } else if ( hp.getType() == HomepageTypes.HOMEPAGE_COPY ){
            prepareAddCopy(request,response,session);
        } else if ( hp.getType() == HomepageTypes.HOMEPAGE_NEW ){
            prepareAddNew(request,response,session);
        }


        // display the form
        doRedirect( request, response, JSP + "detail" );

    }

    //--------------------------------------------------------------------------
    /**
     * Display Homepage options.
     *
     * @author  Khue Nguyen
     *
     * @param   request       Servlet request.
     * @param   response      Servlet response.
     * @param   session       Servlet session for the current user.
     */
    private void displayOptions(	HttpServletRequest    request,
                                    HttpServletResponse   response,
                                    HttpSession           session )
    throws IOException, ServletException, JahiaException
    {

        JahiaConsole.println(CLASS_NAME+".displayOptions","Started");

        JahiaHomepage hp = null;

        String value = null;
        int userDefaultHomepageID = site.getUserDefaultHomepageDef();
        int groupDefaultHomepageID = site.getGroupDefaultHomepageDef();

        String go = request.getParameter("go");
        if ( go == null )
            go = "";

        // set the default action
        request.setAttribute("subAction","options");
        // set the default step
        if ( go.equals("") )
            go = "change";
        request.setAttribute("go",go);

        if ( go.equals("save") || go.equals("change") ){

            // retrieve submitted Data
            value = request.getParameter("userdefaulthomepage");
            if ( value != null )
                userDefaultHomepageID = Integer.parseInt(value);

            value = request.getParameter("groupdefaulthomepage");
            if ( value != null )
                groupDefaultHomepageID = Integer.parseInt(value);

        }

        if ( go.equals("save") ){

            site.setUserDefaultHomepageDef(userDefaultHomepageID);
            site.setGroupDefaultHomepageDef(groupDefaultHomepageID);

            request.setAttribute("warningMsg","Changes saved successfully");
            //doRedirect( request, response, JSP + "options" );
            //displayMain( request, response, session );
            //return;
        }

        Enumeration enum = hpServ.getHomepages(site);
        request.setAttribute("homepages1",enum);
        enum = hpServ.getHomepages(site);
        request.setAttribute("homepages2",enum);

        hp = hpServ.getHomepage(userDefaultHomepageID);
        if (hp == null)
            hp = hpServ.createHomepage(	"","","",HomepageTypes.HOMEPAGE_LINK,null,-1);

        request.setAttribute("userDefaultHomepage",hp);

        hp = hpServ.getHomepage(groupDefaultHomepageID);
        if (hp == null)
            hp = hpServ.createHomepage(	"","","",HomepageTypes.HOMEPAGE_LINK,null,-1);

        request.setAttribute("groupDefaultHomepage",hp);

        // display the form
        doRedirect( request, response, JSP + "options" );


    }

    //--------------------------------------------------------------------------
    /**
     * Delete the homepage bean stored in session.
     * @author  Khue Nguyen
     *
     * @param JahiaHomepage , the homepage bean.
     */
    private boolean processDelete( JahiaHomepage hp	 )
    throws JahiaException
    {
        if ( hp == null )
            return false;

        hpServ.deleteHomepage(hp.getID());
        return true;
    }

}