/**
* Recursive function to print all the categories ready for editing.
*
* @param html_table $table The table to add data to.
* @param coursecat $category The category to render
* @param int $depth The depth of the category.
* @param bool $up True if this category can be moved up.
* @param bool $down True if this category can be moved down.
*/
function print_category_edit(html_table $table, coursecat $category, $depth = -1, $up = false, $down = false) {
global $OUTPUT;
static $str = null;
if (is_null($str)) {
$str = new stdClass;
$str->edit = new lang_string('edit');
$str->delete = new lang_string('delete');
$str->moveup = new lang_string('moveup');
$str->movedown = new lang_string('movedown');
$str->edit = new lang_string('editthiscategory');
$str->hide = new lang_string('hide');
$str->show = new lang_string('show');
$str->cohorts = new lang_string('cohorts', 'cohort');
$str->spacer = $OUTPUT->spacer().' ';
}
if ($category->id) {
$categorycontext = context_coursecat::instance($category->id);
$attributes = array();
$attributes['class'] = $category->visible ? '' : 'dimmed';
$attributes['title'] = $str->edit;
$categoryurl = new moodle_url('/course/manage.php', array('categoryid' => $category->id, 'sesskey' => sesskey()));
$categoryname = $category->get_formatted_name();
$categorypadding = str_repeat(' ', $depth);
$categoryname = $categorypadding . html_writer::link($categoryurl, $categoryname, $attributes);
$icons = array();
if (has_capability('moodle/category:manage', $categorycontext)) {
// Edit category.
$icons[] = $OUTPUT->action_icon(
new moodle_url('/course/editcategory.php', array('id' => $category->id)),
new pix_icon('t/edit', $str->edit, 'moodle', array('class' => 'iconsmall')),
null, array('title' => $str->edit)
);
// Delete category.
$icons[] = $OUTPUT->action_icon(
new moodle_url('/course/manage.php', array('deletecat' => $category->id, 'sesskey' => sesskey())),
new pix_icon('t/delete', $str->delete, 'moodle', array('class' => 'iconsmall')),
null, array('title' => $str->delete)
);
// Change visibility.
if (!empty($category->visible)) {
$icons[] = $OUTPUT->action_icon(
new moodle_url('/course/manage.php', array('hidecat' => $category->id, 'sesskey' => sesskey())),
new pix_icon('t/hide', $str->hide, 'moodle', array('class' => 'iconsmall')),
null, array('title' => $str->hide)
);
} else {
$icons[] = $OUTPUT->action_icon(
new moodle_url('/course/manage.php', array('showcat' => $category->id, 'sesskey' => sesskey())),
new pix_icon('t/show', $str->show, 'moodle', array('class' => 'iconsmall')),
null, array('title' => $str->show)
);
}
// Cohorts.
if (has_any_capability(array('moodle/cohort:manage', 'moodle/cohort:view'), $categorycontext)) {
$icons[] = $OUTPUT->action_icon(
new moodle_url('/cohort/index.php', array('contextid' => $categorycontext->id)),
new pix_icon('t/cohort', $str->cohorts, 'moodle', array('class' => 'iconsmall')),
null, array('title' => $str->cohorts)
);
}
// Move up/down.
if ($up) {
$icons[] = $OUTPUT->action_icon(
new moodle_url('/course/manage.php', array('moveupcat' => $category->id, 'sesskey' => sesskey())),
new pix_icon('t/up', $str->moveup, 'moodle', array('class' => 'iconsmall')),
null, array('title' => $str->moveup)
);
} else {
$icons[] = $str->spacer;
}
if ($down) {
$icons[] = $OUTPUT->action_icon(
new moodle_url('/course/manage.php', array('movedowncat' => $category->id, 'sesskey' => sesskey())),
new pix_icon('t/down', $str->movedown, 'moodle', array('class' => 'iconsmall')),
null, array('title' => $str->movedown)
);
} else {
$icons[] = $str->spacer;
}
}
$actions = '';
if (has_capability('moodle/category:manage', $categorycontext)) {
$popupurl = new moodle_url('/course/manage.php', array('movecat' => $category->id, 'sesskey' => sesskey()));
$tempdisplaylist = array(0 => get_string('top')) + coursecat::make_categories_list('moodle/category:manage', $category->id);
$select = new single_select($popupurl, 'movetocat', $tempdisplaylist, $category->parent, null, "moveform$category->id");
$select->set_label(get_string('frontpagecategorynames'), array('class' => 'accesshide'));
$actions = $OUTPUT->render($select);
}
$table->data[] = new html_table_row(array(
// Category name.
new html_table_cell($categoryname),
// Course count.
new html_table_cell($category->coursecount),
// Icons.
new html_table_cell(join(' ', $icons)),
// Actions.
new html_table_cell($actions)
));
}
if ($categories = $category->get_children()) {
// Print all the children recursively.
$countcats = count($categories);
$count = 0;
$first = true;
$last = false;
foreach ($categories as $cat) {
$count++;
if ($count == $countcats) {
$last = true;
}
$up = $first ? false : true;
$down = $last ? false : true;
$first = false;
print_category_edit($table, $cat, $depth+1, $up, $down);
}
}
}
/**
* Renders a course listing.
*
* @param coursecat $category The currently selected category. This is what the listing is focused on.
* @param course_in_list $course The currently selected course.
* @param int $page The page being displayed.
* @param int $perpage The number of courses to display per page.
* @return string
*/
public function course_listing(coursecat $category = null, course_in_list $course = null, $page = 0, $perpage = 20)
{
if ($category === null) {
$html = html_writer::start_div('select-a-category');
$html .= html_writer::tag('h3', get_string('courses'));
$html .= $this->output->notification(get_string('selectacategory'), 'notifymessage');
$html .= html_writer::end_div();
return $html;
}
$page = max($page, 0);
$perpage = max($perpage, 2);
$totalcourses = $category->coursecount;
$totalpages = ceil($totalcourses / $perpage);
if ($page > $totalpages - 1) {
$page = $totalpages - 1;
}
$options = array('offset' => $page * $perpage, 'limit' => $perpage);
$courseid = isset($course) ? $course->id : null;
$class = '';
if ($page === 0) {
$class .= ' firstpage';
}
if ($page + 1 === (int) $totalpages) {
$class .= ' lastpage';
}
$html = html_writer::start_div('course-listing' . $class, array('data-category' => $category->id, 'data-page' => $page, 'data-totalpages' => $totalpages, 'data-totalcourses' => $totalcourses, 'data-canmoveoutof' => $category->can_move_courses_out_of() && $category->can_move_courses_into()));
$html .= html_writer::tag('h3', $category->get_formatted_name());
$html .= $this->course_listing_actions($category, $course, $perpage);
$html .= $this->listing_pagination($category, $page, $perpage);
$html .= html_writer::start_tag('ul', array('class' => 'ml'));
foreach ($category->get_courses($options) as $listitem) {
$html .= $this->course_listitem($category, $listitem, $courseid);
}
$html .= html_writer::end_tag('ul');
$html .= $this->listing_pagination($category, $page, $perpage, true);
$html .= $this->course_bulk_actions($category);
$html .= html_writer::end_div();
return $html;
}
/**
* Defines the form.
*/
public function definition()
{
$mform = $this->_form;
$this->coursecat = $this->_customdata;
$categorycontext = context_coursecat::instance($this->coursecat->id);
$categoryname = $this->coursecat->get_formatted_name();
// Check permissions, to see if it OK to give the option to delete
// the contents, rather than move elsewhere.
$candeletecontent = $this->coursecat->can_delete_full();
// Get the list of categories we might be able to move to.
$displaylist = $this->coursecat->move_content_targets_list();
// Now build the options.
$options = array();
if ($displaylist) {
$options[0] = get_string('movecontentstoanothercategory');
}
if ($candeletecontent) {
$options[1] = get_string('deleteallcannotundo');
}
if (empty($options)) {
print_error('youcannotdeletecategory', 'error', 'index.php', $categoryname);
}
// Now build the form.
$mform->addElement('header', 'general', get_string('categorycurrentcontents', '', $categoryname));
// Describe the contents of this category.
$contents = '';
if ($this->coursecat->has_children()) {
$contents .= '<li>' . get_string('subcategories') . '</li>';
}
if ($this->coursecat->has_courses()) {
$contents .= '<li>' . get_string('courses') . '</li>';
}
if (question_context_has_any_questions($categorycontext)) {
$contents .= '<li>' . get_string('questionsinthequestionbank') . '</li>';
}
if (!empty($contents)) {
$mform->addElement('static', 'emptymessage', get_string('thiscategorycontains'), html_writer::tag('ul', $contents));
} else {
$mform->addElement('static', 'emptymessage', '', get_string('deletecategoryempty'));
}
// Give the options for what to do.
$mform->addElement('select', 'fulldelete', get_string('whattodo'), $options);
if (count($options) == 1) {
$optionkeys = array_keys($options);
$option = reset($optionkeys);
$mform->hardFreeze('fulldelete');
$mform->setConstant('fulldelete', $option);
}
if ($displaylist) {
$mform->addElement('select', 'newparent', get_string('movecategorycontentto'), $displaylist);
if (in_array($this->coursecat->parent, $displaylist)) {
$mform->setDefault('newparent', $this->coursecat->parent);
}
$mform->disabledIf('newparent', 'fulldelete', 'eq', '1');
}
$mform->addElement('hidden', 'categoryid', $this->coursecat->id);
$mform->setType('categoryid', PARAM_ALPHANUM);
$mform->addElement('hidden', 'action', 'deletecategory');
$mform->setType('action', PARAM_ALPHANUM);
$mform->addElement('hidden', 'sure');
// This gets set by default to ensure that if the user changes it manually we can detect it.
$mform->setDefault('sure', md5(serialize($this->coursecat)));
$mform->setType('sure', PARAM_ALPHANUM);
$this->add_action_buttons(true, get_string('delete'));
}
