/**
* Returns HTML to display a progress bar of progression through a lesson
*
* @param lesson $lesson
* @return string
*/
public function progress_bar(lesson $lesson)
{
global $CFG, $USER, $DB;
$context = get_context_instance(CONTEXT_MODULE, $this->page->cm->id);
// lesson setting to turn progress bar on or off
if (!$lesson->progressbar) {
return '';
}
// catch teachers
if (has_capability('mod/lesson:manage', $context)) {
return $this->output->notification(get_string('progressbarteacherwarning2', 'lesson'));
}
if (!isset($USER->modattempts[$lesson->id])) {
// all of the lesson pages
$pages = $lesson->load_all_pages();
foreach ($pages as $page) {
if ($page->prevpageid == 0) {
$pageid = $page->id;
// find the first page id
break;
}
}
// current attempt number
if (!($ntries = $DB->count_records("lesson_grades", array("lessonid" => $lesson->id, "userid" => $USER->id)))) {
$ntries = 0;
// may not be necessary
}
$viewedpageids = array();
if ($attempts = $lesson->get_attempts($ntries, true)) {
$viewedpageids = array_merge($viewedpageids, array_keys($attempts));
}
// collect all of the branch tables viewed
if ($viewedbranches = $DB->get_records("lesson_branch", array("lessonid" => $lesson->id, "userid" => $USER->id, "retry" => $ntries), 'timeseen DESC', 'id, pageid')) {
$viewedpageids = array_merge($viewedpageids, array_keys($viewedbranches));
}
// Filter out the following pages:
// End of Cluster
// End of Branch
// Pages found inside of Clusters
// Do not filter out Cluster Page(s) because we count a cluster as one.
// By keeping the cluster page, we get our 1
$validpages = array();
while ($pageid != 0) {
$pageid = $pages[$pageid]->valid_page_and_view($validpages, $viewedpageids);
}
// progress calculation as a percent
$progress = round(count($viewedpageids) / count($validpages), 2) * 100;
} else {
$progress = 100;
}
// print out the Progress Bar. Attempted to put as much as possible in the style sheets.
$cells = array();
if ($progress != 0) {
// some browsers do not repsect the 0 width.
$cells[0] = new html_table_cell();
$cells[0]->style = 'width:' . $progress . '%';
$cells[0]->attributes['class'] = 'progress_bar_completed';
$cells[0]->text = ' ';
}
$cells[] = '<div class="progress_bar_token"></div>';
$table = new html_table();
$table->attributes['class'] = 'progress_bar_table';
$table->data = array(new html_table_row($cells));
return $this->output->box(html_writer::table($table), 'progress_bar');
}
/**
* Returns HTML to display a progress bar of progression through a lesson
*
* @param lesson $lesson
* @return string
*/
public function progress_bar(lesson $lesson)
{
global $CFG, $USER, $DB;
$context = context_module::instance($this->page->cm->id);
// lesson setting to turn progress bar on or off
if (!$lesson->progressbar) {
return '';
}
// catch teachers
if (has_capability('mod/lesson:manage', $context)) {
return $this->output->notification(get_string('progressbarteacherwarning2', 'lesson'));
}
if (!isset($USER->modattempts[$lesson->id])) {
// all of the lesson pages
$pages = $lesson->load_all_pages();
foreach ($pages as $page) {
if ($page->prevpageid == 0) {
$pageid = $page->id;
// find the first page id
break;
}
}
// current attempt number
if (!($ntries = $DB->count_records("lesson_grades", array("lessonid" => $lesson->id, "userid" => $USER->id)))) {
$ntries = 0;
// may not be necessary
}
$viewedpageids = array();
if ($attempts = $lesson->get_attempts($ntries, false)) {
foreach ($attempts as $attempt) {
$viewedpageids[$attempt->pageid] = $attempt;
}
}
$viewedbranches = array();
// collect all of the branch tables viewed
if ($branches = $DB->get_records("lesson_branch", array("lessonid" => $lesson->id, "userid" => $USER->id, "retry" => $ntries), 'timeseen ASC', 'id, pageid')) {
foreach ($branches as $branch) {
$viewedbranches[$branch->pageid] = $branch;
}
$viewedpageids = array_merge($viewedpageids, $viewedbranches);
}
// Filter out the following pages:
// End of Cluster
// End of Branch
// Pages found inside of Clusters
// Do not filter out Cluster Page(s) because we count a cluster as one.
// By keeping the cluster page, we get our 1
$validpages = array();
while ($pageid != 0) {
$pageid = $pages[$pageid]->valid_page_and_view($validpages, $viewedpageids);
}
// progress calculation as a percent
$progress = round(count($viewedpageids) / count($validpages), 2) * 100;
} else {
$progress = 100;
}
// print out the Progress Bar. Attempted to put as much as possible in the style sheets.
$content = '<br />' . html_writer::tag('div', $progress . '%', array('class' => 'progress_bar_completed', 'style' => 'width: ' . $progress . '%;'));
$printprogress = html_writer::tag('div', get_string('progresscompleted', 'lesson', $progress) . $content, array('class' => 'progress_bar'));
return $this->output->box($printprogress, 'progress_bar');
}