/**
* This function handles all aspects of page processing and then calls
* methods in $selector at the appropriate moments.
* @param post_selector $selector Object that extends this base class
*/
public static function go($selector)
{
global $PAGE, $FULLME, $SESSION;
$id = required_param('id', PARAM_INT);
$cloneid = optional_param('clone', 0, PARAM_INT);
$fromselect = optional_param('fromselect', 0, PARAM_INT);
$all = optional_param('all', '', PARAM_RAW);
$select = optional_param('select', '', PARAM_RAW);
$isform = optional_param('postselectform', 0, PARAM_INT);
$PAGE->set_url($FULLME);
// Get basic objects.
$forum = mod_forumng::get_from_cmid($id, $cloneid);
$forumngid = $forum->get_id();
$params = array_merge($_REQUEST, $forum->get_link_params_array());
if (optional_param('cancel', '', PARAM_RAW)) {
// CALL TYPE 6.
redirect('../../view.php?' . $forum->get_link_params(mod_forumng::PARAM_PLAIN));
}
$cm = $forum->get_course_module();
$course = $forum->get_course();
$groupid = mod_forumng::get_activity_group($cm, true);
// Page name and permissions.
$pagename = $selector->get_page_name();
$buttonname = $selector->get_button_name();
$forum->require_view($groupid);
$selector->require_capability($forum->get_context(), $forum);
if (!($fromselect || $isform || $all)) {
// Either an initial request (non-JS) to display the 'dialog' box,
// or a request to show the list of posts with checkboxes for selection.
// Both types share same navigation.
$out = $forum->init_page(new moodle_url('/mod/forumng/view.php', $forum->get_link_params_array()));
print $out->header();
if (!$select) {
// Show initial dialog.
print $out->box_start();
print html_writer::tag('h2', $buttonname);
print html_writer::start_tag('form', array('action' => $_SERVER['PHP_SELF'], 'method' => 'get', 'id' => 'discsel'));
print html_writer::start_tag('div');
foreach ($params as $param => $paramval) {
print html_writer::empty_tag('input', array('name' => $param, 'type' => 'hidden', 'value' => $paramval));
}
print html_writer::tag('p', get_string('selectordiscall', 'forumng'));
print html_writer::start_tag('div', array('class' => 'forumng-buttons'));
print html_writer::empty_tag('input', array('name' => 'all', 'type' => 'submit', 'value' => get_string('selectoralldisc', 'forumng')));
print html_writer::empty_tag('input', array('name' => 'select', 'type' => 'submit', 'value' => get_string('selectorselecteddisc', 'forumng')));
print html_writer::empty_tag('input', array('name' => 'cancel', 'type' => 'submit', 'value' => get_string('cancel')));
print html_writer::end_tag('div');
print html_writer::end_tag('div');
print html_writer::end_tag('form');
print $out->box_end();
} else {
// Show list of posts to select.
print html_writer::start_tag('div', array('class' => 'forumng-selectintro'));
print html_writer::tag('p', get_string('selectdiscintro', 'forumng'));
print html_writer::end_tag('div');
print html_writer::start_tag('form', array('action' => $_SERVER['PHP_SELF'], 'method' => 'post', 'id' => 'discsel'));
print html_writer::start_tag('div');
print $forum->get_link_params(mod_forumng::PARAM_FORM);
print html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'fromselect', 'value' => '1'));
foreach ($params as $param => $paramval) {
print html_writer::empty_tag('input', array('name' => $param, 'type' => 'hidden', 'value' => $paramval));
}
// Now show discussions, allow for override at type level if following is no good.
if (method_exists($forum->get_type(), 'print_select_page')) {
print $forum->get_type()->print_select_page($forum, $groupid);
} else {
// Use default processing, get view and hack in selectors.
ob_start();
$forum->get_type()->print_view_page($forum, $groupid);
$discussionhtml = ob_get_contents();
ob_end_clean();
// Try and hack into the discussion list - must be xhtml...
$doc = new DOMDocument('1.0', 'utf-8');
@$doc->loadHTML($discussionhtml);
$docnew = new DOMDocument('1.0', 'utf-8');
$xpath = new DOMXPath($doc);
$lists = $xpath->query("//table[contains(concat(' ',normalize-space(@class),' '),' forumng-discussionlist ')]");
// Remove all links.
foreach ($lists as $list) {
$links = $xpath->query("//a|//form", $list);
foreach ($links as $node) {
if ($node->nodeName == 'a') {
// Disable links.
$node->removeAttribute('href');
} else {
// Remove any forms.
$node->parentNode->removeChild($node);
}
}
// Add in discussion select.
$rows = $xpath->query("//table[@class='generaltable forumng-discussionlist']\n //tr[not(@class) or @class!='forumng-divider']", $list);
for ($a = 0, $len = $rows->length; $a < $len; $a++) {
// Add in select options for each row, checking types.
$row = $rows->item($a);
if ($a == 0) {
$newcell = $doc->createElement('th', get_string('selectorselectdisc', 'mod_forumng'));
$newcell->setAttribute('class', 'header');
$newcell->setAttribute('scope', 'col');
$row->appendChild($newcell);
} else {
$id = $row->getAttribute('id');
if (strpos($id, 'discrow') === false) {
continue;
}
// Get discussion id from row id as added by renderer.
$id = str_replace('discrow_', '', $id);
// Check if we include checkbox or not.
$classar = explode(' ', $row->getAttribute('class'));
$includematches = array_intersect($selector->only_discussion_types(), $classar);
$excludematches = array_intersect($selector->exclude_discussion_types(), $classar);
if ((count($selector->only_discussion_types()) == 0 || count($includematches) > 0) && count($excludematches) == 0) {
// OK to include, add checkbox and label.
$select = $doc->createElement('input');
$select->setAttribute('type', 'checkbox');
$select->setAttribute('name', "selectd{$id}");
$select->setAttribute('id', "selectd{$id}");
$label = $doc->createElement('label', get_string('selectorselectdisc', 'mod_forumng'));
$label->setAttribute('for', "selectd{$id}");
$label->setAttribute('class', 'accesshide');
$newcell = $doc->createElement('td');
$newcell->setAttribute('class', 'dselect');
$newcell->appendChild($select);
$newcell->appendChild($label);
$row->appendChild($newcell);
} else {
$newcell = $doc->createElement('td', ' ');
$row->appendChild($newcell);
}
}
}
// Keep only discussion list by moving to new xml doc.
$newnode = $docnew->importNode($list, true);
$docnew->appendChild($newnode);
}
print $docnew->saveHTML();
}
print html_writer::start_tag('div', array('class' => 'forumng-selectoutro'));
print html_writer::empty_tag('input', array('type' => 'submit', 'value' => get_string('confirmselection', 'forumng')));
print html_writer::empty_tag('input', array('type' => 'submit', 'name' => 'cancel', 'value' => get_string('cancel')));
print html_writer::end_tag('div');
print html_writer::end_tag('div');
print html_writer::end_tag('form');
}
// Display footer.
print $out->footer();
} else {
// Call types 3, 4, and 5 use the form (and may include list of postids).
$postids = array();
$selectedids = array();
foreach ($_POST as $field => $value) {
$matches = array();
if (!is_array($value) && (string) $value !== '0' && preg_match('~^selectd([0-9]+)$~', $field, $matches)) {
$selectedids[] = $matches[1];
}
}
if (!empty($selectedids)) {
// Check access.
foreach ($selectedids as $id) {
$discuss = mod_forumng_discussion::get_from_id($id, $cloneid);
if ($forum->get_type()->can_view_discussion($discuss)) {
$postids[] = $id;
}
}
} else {
if (!$all) {
// No slections made.
redirect('../../view.php?' . $forum->get_link_params(mod_forumng::PARAM_PLAIN));
}
// Work out discussion list for this page (e.g. selected All).
$sortorder = optional_param('sort', 'd', PARAM_ALPHA);
if (isset($SESSION->forumng_discussionlist[$forumngid]->sort)) {
$sortorder = $SESSION->forumng_discussionlist[$forumngid]->sort;
}
$page = optional_param('page', 1, PARAM_INT);
if (isset($SESSION->forumng_discussionlist[$forumngid]->page)) {
$page = $SESSION->forumng_discussionlist[$forumngid]->page;
}
$sortchar = substr($sortorder, 0, 1);
if (strlen($sortorder) == 2) {
$sortreverse = substr($sortorder, 1, 1) == 'r' ? true : false;
} else {
$sortreverse = false;
}
$sort = mod_forumng::get_sort_code($sortchar);
$list = $forum->get_discussion_list($groupid, $forum->can_view_hidden(), $page, $sort, $sortreverse);
$discussionsarr = array_merge($list->get_sticky_discussions(), $list->get_normal_discussions());
// Double check ID is valid and user can view.
for ($a = 0; $a < count($discussionsarr); $a++) {
if ($forum->get_type()->can_view_discussion($discussionsarr[$a])) {
$postids[] = $discussionsarr[$a]->get_id();
}
}
}
$out = $forum->init_page(new moodle_url('/mod/forumng/view.php', $forum->get_link_params_array()), $pagename);
// Get form to use.
$mform = $selector->get_form($forum, $all, $postids);
if (!$mform) {
// Some options do not need a confirmation form; in that case,
// just apply the action immediately.
$selector->apply($forum, $all, $postids, null);
exit;
}
// Check cancel.
if ($mform->is_cancelled()) {
redirect('../../view.php?' . $forum->get_link_params(mod_forumng::PARAM_PLAIN));
}
if ($fromform = $mform->get_data()) {
// User submitted form to confirm process, which should now be
// applied by selector.
$selector->apply($forum, $all, $postids, $fromform);
exit;
} else {
print $out->header();
// User requested form either via JavaScript or the other way, and
// either with all messages or the whole discussion.
// Print form.
print $mform->display();
// Print optional content that goes after form.
print $selector->get_content_after_form($forum, $all, $postids, $fromform);
// Display footer.
print $out->footer();
}
}
}
