class _AdvisingScreenTypeView extends _AdvisingScreen
 {


  /**
   * In __advising_screen, this method simply displays the degree plan's
   * semesters to the screen.  But here, we need to go through the 4
   * type categories: Core, Major, Supporting, and Electives,
   * and only display courses and groups from each semester fitting
   * that type.
   *
   */
  function build_semester_list() 
   {

    $list_semesters = $this->degree_plan->list_semesters;
    // Go through each semester and add it to the screen...
    $list_semesters->reset_counter();

    $this->add_to_screen($this->display_semester_list($list_semesters, "c", t("Core Requirements"), true));
    $this->add_to_screen($this->display_semester_list($list_semesters, "m", t("Major Requirements"), true));
    $this->add_to_screen($this->display_semester_list($list_semesters, "s", t("Supporting Requirements"), true));
    $this->add_to_screen($this->display_semester_list($list_semesters, "e", t("Electives"), true));


    $temp_d_s = new Semester(-55); // developmental requirements.
    if ($dev_sem = $list_semesters->find_match($temp_d_s)) 
     {
      $this->add_to_screen($this->display_semester($dev_sem));
    }


  }


  /**
   * Does the testType match the reqType?  This function is used
   * to make sure that courses or groups with a certain requirement_type
   * are placed in the correct semester blocks on screen.
   *
   * @param string $test_type
   * @param string $req_type
   * @return bool
   */
  function match_requirement_type($test_type, $req_type) 
   {
    // Does the testType match the reqType?

    if ($test_type == $req_type) 
     {
      return true;
    }

    if ($test_type == "uc" && $req_type == "c") 
     { // university captone core.
      return true;
    }

    if ($test_type == "um" && $req_type == "m") 
     { // university captone major
      return true;
    }


    if ($req_type == "e") 
     {
      // type "elective."  test must not be c, s, or m.
      if ($test_type != "c" && $test_type != "s" && $test_type != "m"
         && $test_type != "uc" && $test_type != "um" && $test_type != "dev") 
       {
        return true;
      }
    }

    return false;

  }

  /**
   * Display contents of a semester list as a single semester,
   * only displaying courses matching the requirement_type.
   * If the requirement_type is "e", then we will look for anything
   * not containing an m, s, uc, um, or c as a requirement_type.
   *
   * @param SemesterList $list_semesters
   * @param string $requirement_type
   * @param string $title
   * @param bool $bool_display_hour_count
   * @return string
   */
  function display_semester_list($list_semesters, $requirement_type, $title, $bool_display_hour_count = false) 
   {

    // Display the contents of a semester object
    // on the screen (in HTML)
    $pC = "";
    $pC .= $this->draw_semester_box_top($title);

    $count_hours_completed = 0;
    $list_semesters->reset_counter();
    while ($list_semesters->has_more()) 
     {
      $semester = $list_semesters->get_next();
      if ($semester->semester_num == -88) 
       { // These are the "added by advisor" courses.  Skip them.
        continue;
      }

      // First, display the list of bare courses.
      $semester->list_courses->sort_alphabetical_order();
      $semester->list_courses->reset_counter();
      $sem_is_empty = true;
      $sem_rnd = rand(0, 9999);
      $pC .= "<tr><td colspan='4' class='tenpt'>
					<b><!--SEMTITLE$sem_rnd--></b></td></tr>";
      while ($semester->list_courses->has_more()) 
       {
        $course = $semester->list_courses->get_next();
        // Make sure the requirement type matches!
        if (!$this->match_requirement_type($course->requirement_type, $requirement_type)) 
         {
          continue;
        }

        // Is this course being fulfilled by anything?
        //if (is_object($course->courseFulfilledBy))
        if (!($course->course_list_fulfilled_by->is_empty)) 
         { // this requirement is being fulfilled by something the student took...
          //$pC .= $this->draw_course_row($course->courseFulfilledBy);
          $pC .= $this->draw_course_row($course->course_list_fulfilled_by->get_first());
          //$count_hours_completed += $course->courseFulfilledBy->hours_awarded;
          $course->course_list_fulfilled_by->get_first()->bool_has_been_displayed = true;

          if ($course->course_list_fulfilled_by->get_first()->display_status == "completed") 
           { // We only want to count completed hours, no midterm or enrolled courses.
            //$count_hours_completed += $course->course_list_fulfilled_by->get_first()->hours_awarded;
            $h = $course->course_list_fulfilled_by->get_first()->hours_awarded;
            if ($course->course_list_fulfilled_by->get_first()->bool_ghost_hour == TRUE) {
              $h = 0;
            }
            $count_hours_completed += $h;
          }
        }
        else {
          // This requirement is not being fulfilled...
          $pC .= $this->draw_course_row($course);
        }
        //$pC .= "</td></tr>";
        $sem_is_empty = false;
      }

      // Now, draw all the groups.
      $semester->list_groups->sort_alphabetical_order();
      $semester->list_groups->reset_counter();
      while ($semester->list_groups->has_more()) 
       {
        //debug_c_t("dddd");
        $group = $semester->list_groups->get_next();
        if (!$this->match_requirement_type($group->requirement_type, $requirement_type)) 
         {
          continue;
        }

        $pC .= "<tr><td colspan='8'>";
        $pC .= $this->display_group($group);
        $count_hours_completed += $group->hours_fulfilled_for_credit;
        $pC .= "</td></tr>";
        $sem_is_empty = false;
      }

      if ($sem_is_empty == false) 
       {
        // There WAS something in this semester, put in the title.

        //debugCT("replacing $sem_rnd with $semester->title");
        $pC = str_replace("<!--SEMTITLE$sem_rnd-->", $semester->title, $pC);
      }

    }


    // Add hour count to the bottom...
    if ($bool_display_hour_count == true && $count_hours_completed > 0) 
     {
      $pC .= "<tr><td colspan='8'>
				<div class='tenpt' style='text-align:right; margin-top: 10px;'>
				Completed hours: $count_hours_completed
				</div>
				";
      $pC .= "</td></tr>";
    }

    $pC .= $this->draw_semester_box_bottom();

    return $pC;

  }

}