com.benfante.minimark.ajax.QuestionABo.java Source code

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Here is the source code for com.benfante.minimark.ajax.QuestionABo.java

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/**
 * Copyright (C) 2009 Lucio Benfante <lucio.benfante@gmail.com>
 *
 * This file is part of minimark Web Application.
 *
 * 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 com.benfante.minimark.ajax;

import com.benfante.minimark.beans.QuestionBean;
import com.benfante.minimark.blo.AssessmentBo;
import com.benfante.minimark.blo.QuestionBo;
import com.benfante.minimark.controllers.AssessmentController;
import com.benfante.minimark.dao.AssessmentDao;
import com.benfante.minimark.dao.AssessmentQuestionDao;
import com.benfante.minimark.po.Assessment;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import org.directwebremoting.Browser;
import org.directwebremoting.ScriptSession;
import org.directwebremoting.WebContext;
import org.directwebremoting.WebContextFactory;
import org.directwebremoting.annotations.RemoteMethod;
import org.directwebremoting.annotations.RemoteProxy;
import org.directwebremoting.ui.dwr.Util;
import org.springframework.stereotype.Service;

/**
 * Ajax methods for managing the questions.
 *
 * @author Lucio Benfante
 */
@Service
@RemoteProxy(name = "questionABo")
public class QuestionABo {

    @Resource
    private QuestionBo questionBo;
    @Resource
    private AssessmentBo assessmentBo;
    @Resource
    private AssessmentQuestionDao assessmentQuestionDao;
    @Resource
    private AssessmentDao assessmentDao;

    @RemoteMethod
    public void updateQuestionSearchResult(final QuestionBean questionBean) {
        final WebContext ctx = WebContextFactory.get();
        ScriptSession scriptSession = ctx.getScriptSession();
        Browser.withSession(scriptSession.getId(), new Runnable() {

            public void run() {
                try {
                    HttpServletRequest req = ctx.getHttpServletRequest();
                    req.setAttribute(AssessmentController.QUESTION_SEARCH_RESULT_ATTR_NAME,
                            questionBo.search(questionBean));
                    Util.setValue("searchResult",
                            ctx.forwardToString("/WEB-INF/jsp/assessment/questionSearchResult.jsp"), false);
                } catch (Exception ex) {
                    Util.setValue("searchResult", ex.getMessage());
                }
            }
        });
    }

    @RemoteMethod
    public void addQuestionToAssessment(Long questionId, final Long assessmentId) {
        assessmentBo.addQuestionToAssessment(questionId, assessmentId);
        refreshAssessmentQuestions(assessmentId);
        refreshQuestionsStatusBar(assessmentId);
    }

    @RemoteMethod
    public void removeQuestionFromAssessment(Long assessmentQuestionId, final Long assessmentId) {
        assessmentBo.removeQuestionFromAssessment(assessmentQuestionId);
        refreshAssessmentQuestions(assessmentId);
        refreshQuestionsStatusBar(assessmentId);
    }

    @RemoteMethod
    public void moveUpQuestionInAssessment(Long assessmentQuestionId, final Long assessmentId) {
        assessmentBo.moveUpQuestionInAssessment(assessmentQuestionId, assessmentId);
        refreshAssessmentQuestions(assessmentId);
    }

    @RemoteMethod
    public void moveDownQuestionInAssessment(Long assessmentQuestionId, final Long assessmentId) {
        assessmentBo.moveDownQuestionInAssessment(assessmentQuestionId, assessmentId);
        refreshAssessmentQuestions(assessmentId);
    }

    private void refreshAssessmentQuestions(final Long assessmentId) throws UnsupportedOperationException {
        final WebContext ctx = WebContextFactory.get();
        ScriptSession scriptSession = ctx.getScriptSession();
        Browser.withSession(scriptSession.getId(), new Runnable() {

            public void run() {
                try {
                    HttpServletRequest req = ctx.getHttpServletRequest();
                    req.setAttribute(AssessmentController.ASSESSMENT_QUESTIONS_ATTR_NAME,
                            assessmentQuestionDao.findByAssessmentId(assessmentId));
                    Util.setValue("assessmentQuestions",
                            ctx.forwardToString("/WEB-INF/jsp/assessment/assessmentQuestions.jsp"), false);
                } catch (Exception ex) {
                    Util.setValue("assessmentQuestions", ex.getMessage());
                }
            }
        });
    }

    private void refreshQuestionsStatusBar(final Long assessmentId) {
        final WebContext ctx = WebContextFactory.get();
        ScriptSession scriptSession = ctx.getScriptSession();
        Browser.withSession(scriptSession.getId(), new Runnable() {

            public void run() {
                try {
                    Assessment assessment = assessmentDao.get(assessmentId);
                    Util.setValue("OpenShortQuestionsCount", assessment.getCountOpenShortQuestions(), false);
                    Util.setValue("OpenLongQuestionsCount", assessment.getCountOpenLongQuestions(), false);
                    Util.setValue("ClosedSingleQuestionsCount", assessment.getCountClosedSingleQuestions(), false);
                    Util.setValue("ClosedMultiQuestionsCount", assessment.getCountClosedMultiQuestions(), false);
                    Util.setValue("TotalQuestionsCount", assessment.getCountAllQuestions(), false);
                    Util.setValue("TotalWeightSum", assessment.getQuestionsTotalWeight().toString(), false);
                    if (assessment.getContainsDuplicatedQuestions()) {
                        Util.setStyle("duplicatedQuestionsWarning", "display", "block");
                    } else {
                        Util.setStyle("duplicatedQuestionsWarning", "display", "none");
                    }
                } catch (Exception ex) {
                    Util.setValue("OpenShortQuestionsCount", "E", false);
                    Util.setValue("OpenLongQuestionsCount", "E", false);
                    Util.setValue("ClosedSingleQuestionsCount", "E", false);
                    Util.setValue("ClosedMultiQuestionsCount", "E", false);
                    Util.setValue("TotalQuestionsCount", "E", false);
                    Util.setValue("TotalWeightSum", "E", false);
                    Util.setStyle("duplicatedQuestionsWarning", "display", "none");
                }
            }
        });
    }
}