InterviewingEgoIDPage.java

package net.sf.egonet.web.page;

import java.util.ArrayList;
import java.util.List;

import org.apache.wicket.PageParameters;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.basic.MultiLineLabel;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.list.ListItem;
import org.apache.wicket.markup.html.list.ListView;
import org.apache.wicket.model.Model;

import com.google.common.base.Function;
import com.google.common.collect.Lists;

import net.sf.egonet.model.Answer;
import net.sf.egonet.model.Interview;
import net.sf.egonet.model.Question;
import net.sf.egonet.model.Study;
import net.sf.egonet.model.Question.QuestionType;
import net.sf.egonet.persistence.Interviewing;
import net.sf.egonet.persistence.Questions;
import net.sf.egonet.persistence.Studies;
import net.sf.egonet.web.panel.AnswerFormFieldPanel;

public class InterviewingEgoIDPage extends EgonetPage {
	
	public ArrayList<AnswerFormFieldPanel> questions;
	private Model message;
	private ListView questionsView;
	private Long studyId;
	
	public InterviewingEgoIDPage(PageParameters parameters) {
		this(Studies.getStudy(Long.parseLong(parameters.getString("studyId"))));
	}
	
	public InterviewingEgoIDPage(Study study) {
		super(study.getName());
		this.studyId = study.getId();
		build();
	}
	
	/**
	 * third parameter to AnswerFormFieldPanel.getInstance() is the 
	 * interviewId.  In the EgoId page we're not concerned with this 
	 * and it's not used, so pass a zero
	 */
	private void build() {
		
		questions = Lists.newArrayList(Lists.transform(
			Questions.getQuestionsForStudy(studyId, QuestionType.EGO_ID),
			new Function<Question,AnswerFormFieldPanel>() {
				public AnswerFormFieldPanel apply(Question question) {
					return AnswerFormFieldPanel.getInstance("question",question, new Long(0));
				}
			}));
		
		Form form = new Form("form") 
        {
			@Override
			public void onSubmit()
            {
				boolean answeredAll = true;
				List<Answer> answers = Lists.newArrayList();
				// first, verify that any and all multiple selection questions
				// are answered fully
				boolean multipleSelectionsOkay = 
					AnswerFormFieldPanel.allRangeChecksOkay(questions);

				if ( !multipleSelectionsOkay ) {
					for(AnswerFormFieldPanel answerField : questions) {
						answerField.setNotification(answerField.getRangeCheckNotification());
					}
					return;
				}
				// if all multiple selection questions are okay, proceed
				for(AnswerFormFieldPanel question : questions) {
					if(question.answered()) {
						answers.add(new Answer(question.getQuestion(),question.getAnswer()));
						question.setNotification("");
					} else {
						answeredAll = false;
						question.setNotification("Unanswered");
					}
				}
				if(answeredAll && ! answers.isEmpty()) {
					Interview interview = 
						Interviewing.findOrCreateMatchingInterviewForStudy(studyId, answers);
				
					EgonetPage comeFrom = InterviewingEgoPage.askNext(interview.getId(), null, null);
					setResponsePage(
							InterviewingEgoPage.askNextUnanswered(interview.getId(),null,comeFrom));
				}
            }
        };
		
        form.add(new MultiLineLabel("prompt", Studies.getStudy(studyId).getEgoIdPrompt())
        		.setEscapeModelStrings(false));
        
		questionsView = new ListView("questions", questions)
        {
			protected void populateItem(ListItem item)
            {
				AnswerFormFieldPanel wrapper = (AnswerFormFieldPanel) item.getModelObject();
				if(wrapper.getQuestion().getId().equals(questions.get(0).getQuestion().getId())) {
					wrapper.setAutoFocus();
				}
				item.add(wrapper);
				item.add(new MultiLineLabel("questionPrompt", wrapper.getQuestion().getPrompt()));
            }
        };
        questionsView.setReuseItems(true);
        form.add(questionsView);

		add(form);
		
		message = new Model("");
		
		add(new Label("message", message));
	}
}