function ajax_termdates()
{
OutputModes('ajax');
if (!CheckPermissions('public')) {
return;
}
$error = false;
$years = array();
if (isset($_GET['years'])) {
$year_ranges = split(',', $_GET['years']);
foreach ($year_ranges as $year_range) {
if ($year_range === '') {
continue;
}
$ends = split('-', $year_range);
if (count($ends) > 2) {
$this->main_frame->Error(array('class' => 'error', 'text' => 'Invalid year range: ' . $year_range));
$error = true;
} else {
if (count($ends) == 1) {
$ends = array($year_range, $year_range);
}
$range_error = false;
foreach ($ends as &$end) {
if (is_numeric($end) && $end >= 1970 && $end < 2037) {
$end = (int) $end;
} else {
$this->main_frame->Error(array('class' => 'error', 'text' => 'Invalid year: ' . $end));
$range_error = true;
}
}
if (!$range_error) {
for ($year = $ends[0]; $year <= $ends[1]; ++$year) {
$years[] = $year;
}
} else {
$error = true;
}
}
}
}
if (!$error) {
$root = array('_tag' => 'calendar', 'termdates' => array());
foreach ($years as $year) {
$acyear = array('_tag' => 'academicyear', '_attr' => array('year' => $year));
for ($term = 0; $term < 6; ++$term) {
$start_ts = Academic_time::StartOfAcademicTerm($year, $term);
$monday_ts = Academic_time::MondayWeek1OfAcademicTerm($year, $term);
$start = new Academic_time($start_ts);
$days = Academic_time::LengthOfAcademicTerm($year, $term);
$end = $start->Adjust($days . 'days');
$monday = new Academic_time($monday_ts);
$acterm = array('_tag' => 'term', '_attr' => array('id' => "term_{$year}_{$term}", 'term' => $term), 'type' => $start->AcademicTermTypeName(), 'name' => $start->AcademicTermName(), 'unique' => $start->AcademicTermNameUnique(), 'start' => $start->Format('Y-m-d'), 'end' => $end->Format('Y-m-d'), 'days' => $days, 'mondayweek1' => $monday->Format('Y-m-d'), 'weeks' => $start->AcademicTermWeeks());
$acyear[] = $acterm;
}
$root['termdates'][] = $acyear;
}
$this->main_frame->SetXml($root);
}
$this->main_frame->Load();
}
function Load()
{
/// Process the data before loading
$this->ProcessEvents($this->mData, $this->mCategories);
/// Make some links
if (NULL !== $this->mPaths && NULL !== $this->mRangeFormat && NULL !== $this->mStartTime && NULL !== $this->mEndTime) {
$days = Academic_time::DaysBetweenTimestamps($this->mStartTime, $this->mEndTime);
$start = new Academic_time($this->mStartTime);
$end = new Academic_time($this->mEndTime);
$now = new Academic_time(time());
$try_again = TRUE;
if (0 === $start->AcademicDay() && 0 === $end->AcademicDay()) {
$CI =& get_instance();
$terms_apart = ($end->AcademicYear() - $start->AcademicYear()) * 6 + $end->AcademicTerm() - $start->AcademicTerm();
// don't really need to scroll in years
if (FALSE && $terms_apart >= 6) {
$this->SetData('ForwardUrl', $this->GenerateRangeUrl($CI->academic_calendar->Academic($start->AcademicYear() + 1, $start->AcademicTerm(), $start->AcademicWeek()), $CI->academic_calendar->Academic($end->AcademicYear() + 1, $end->AcademicTerm(), $end->AcademicWeek())));
$this->SetData('BackwardUrl', $this->GenerateRangeUrl($CI->academic_calendar->Academic($start->AcademicYear() - 1, $start->AcademicTerm(), $start->AcademicWeek()), $CI->academic_calendar->Academic($end->AcademicYear() - 1, $end->AcademicTerm(), $end->AcademicWeek())));
$try_again = FALSE;
} elseif ($terms_apart > 0) {
$this->SetData('ForwardUrl', $this->GenerateRangeUrl($CI->academic_calendar->Academic($start->AcademicYear() + (5 === $start->AcademicTerm() ? 1 : 0), ($start->AcademicTerm() + 1) % 6, $start->AcademicWeek()), $CI->academic_calendar->Academic($end->AcademicYear() + (5 === $start->AcademicTerm() ? 1 : 0), ($end->AcademicTerm() + 1) % 6, $end->AcademicWeek())));
$this->SetData('BackwardUrl', $this->GenerateRangeUrl($CI->academic_calendar->Academic($start->AcademicYear() - (0 === $start->AcademicTerm() ? 1 : 0), ($start->AcademicTerm() + 5) % 6, $start->AcademicWeek()), $CI->academic_calendar->Academic($end->AcademicYear() - (0 === $start->AcademicTerm() ? 1 : 0), ($end->AcademicTerm() + 5) % 6, $end->AcademicWeek())));
$try_again = FALSE;
}
$this->SetData('NowUrl', $this->GenerateRangeUrl($CI->academic_calendar->Academic($now->AcademicYear(), $now->AcademicTerm(), 1), $CI->academic_calendar->Academic($now->AcademicYear() + (5 === $start->AcademicTerm() ? 1 : 0), ($now->AcademicTerm() + 1) % 6, 1)));
$this->SetData('NowUrlLabel', 'This term');
}
if ($try_again) {
$now = $now->Midnight();
if ($days >= 7) {
$forward_jump = '1week';
$now = $now->BackToMonday();
$this->SetData('NowUrlLabel', 'This week');
} else {
$forward_jump = '1day';
$this->SetData('NowUrlLabel', 'Today');
}
$this->SetData('ForwardUrl', $this->GenerateRangeUrl($start->Adjust($forward_jump), $end->Adjust($forward_jump)));
$this->SetData('BackwardUrl', $this->GenerateRangeUrl($start->Adjust('-' . $forward_jump), $end->Adjust('-' . $forward_jump)));
$this->SetData('NowUrl', $this->GenerateRangeUrl($now, $now->Adjust('+' . $forward_jump)));
}
}
parent::Load();
}
