/**
* screen_handler( $action_vars )
*
* Assignment screens handler.
* Handles uris like groups/ID/courseware/assignments/args
*/
function screen_handler($action_vars)
{
if (reset($action_vars) == 'new_assignment') {
$this->current_course = BPSP_Courses::is_course();
//Load editor
add_action('bp_head', array(&$this, 'load_editor'));
do_action('courseware_list_assignments_screen');
do_action('courseware_new_assignment_screen');
add_filter('courseware_group_template', array(&$this, 'new_assignment_screen'));
} elseif (reset($action_vars) == 'assignment') {
$current_assignment = BPSP_Assignments::is_assignment($action_vars[1]);
if (isset($action_vars[1]) && null != $current_assignment) {
$this->current_assignment = $current_assignment;
} else {
wp_redirect(wp_redirect(get_option('siteurl')));
}
if (isset($action_vars[2]) && 'edit' == $action_vars[2]) {
// Try to serve the form data
if (isset($_GET['get_form_data'])) {
$this->get_form_data();
}
add_action('bp_head', array(&$this, 'load_editor'));
do_action('courseware_edit_assignment_screen');
add_filter('courseware_group_template', array(&$this, 'edit_assignment_screen'));
} elseif (isset($action_vars[2]) && 'delete' == $action_vars[2]) {
add_filter('courseware_group_template', array(&$this, 'delete_assignment_screen'));
} elseif (isset($action_vars[2]) && 'enable_forum' == $action_vars[2]) {
do_action('courseware_bibliography_screen');
add_filter('courseware_group_template', array(&$this, 'enable_forum_assignment_screen'));
} else {
do_action('courseware_bibliography_screen');
do_action('courseware_assignment_screen');
add_filter('courseware_group_template', array(&$this, 'single_assignment_screen'));
}
do_action('courseware_assignment_screen_handler', $action_vars);
} elseif (reset($action_vars) == 'assignments') {
do_action('courseware_list_assignments_screen');
add_filter('courseware_group_template', array(&$this, 'list_assignments_screen'));
}
}
/**
* screen_handler( $action_vars )
*
* Response screens handler.
* Handles uris like groups/ID/courseware/response/args
*/
function screen_handler($action_vars)
{
$this->current_assignment = BPSP_Assignments::is_assignment($action_vars[1]);
// Check if we got a valid parent assignment
if (!$this->current_assignment) {
wp_redirect(wp_redirect(get_option('siteurl')));
}
if ($action_vars[2] == 'add_response') {
//Load editor
add_action('bp_head', array(&$this, 'load_editor'));
add_filter('courseware_group_template', array(&$this, 'new_response_screen'));
} elseif ($action_vars[2] == 'response') {
$current_response = $this->is_response($action_vars[3]);
if (isset($action_vars[3]) && !empty($current_response)) {
$this->current_response = $current_response;
} else {
wp_redirect(wp_redirect(get_option('siteurl')));
}
if (isset($action_vars[4]) && 'delete' == $action_vars[4]) {
add_filter('courseware_group_template', array(&$this, 'delete_response_screen'));
} else {
add_filter('courseware_group_template', array(&$this, 'single_response_screen'));
}
}
}
/**
* gradebook_screen( $vars )
*
* Hooks into screen_handler
* Adds a UI to assignments for gradebook management.
*
* @param Array $vars a set of variables received for this screen template
* @return Array $vars a set of variable passed to this screen template
*/
function gradebook_screen($vars)
{
global $bp;
$nonce_name = 'gradebook_nonce';
$nonce_import_name = 'gradebook_import_nonce';
$nonce_clear_name = 'gradebook_clear_nonce';
if (!$this->has_gradebook_caps($bp->loggedin_user->id) && !is_super_admin()) {
$vars['die'] = __('BuddyPress Courseware Error while forbidden user tried to manage gradebook.', 'bpsp');
return $vars;
}
$students = BP_Groups_Member::get_all_for_group($bp->groups->current_group->id);
if (isset($_POST['_nxtnonce'])) {
$is_nonce = nxt_verify_nonce($_POST['_nxtnonce'], $nonce_name);
}
if (isset($_POST['_nxtnonce']) && true != $is_nonce) {
$vars['die'] = __('BuddyPress Courseware Nonce Error while updating gradebook.', 'bpsp');
return $vars;
}
$gradebook_id = $this->has_gradebook($this->current_assignment);
if (!$gradebook_id) {
$vars['die'] = __('BuddyPress Courseware Error while creating gradebook.', 'bpsp');
return $vars;
}
if (!empty($_POST['grade'])) {
foreach ($_POST['grade'] as $grade) {
if (!empty($grade) && !empty($grade['uid']) && !empty($grade['value'])) {
# If grade was added or updated!
$status = $this->save_grade($gradebook_id, $grade);
if ($status !== null) {
$data = array('grade' => $grade, 'teacher' => $bp->loggedin_user->userdata, 'assignment' => $this->current_assignment);
if ($status == true) {
do_action('courseware_grade_added', $data);
} else {
do_action('courseware_grade_updated', $data);
}
}
}
}
$vars['message'] = __('Gradebook saved.', 'bpsp');
}
$vars['name'] = 'gradebook';
$vars['students'] = $students['members'];
if (empty($vars['grades'])) {
$vars['grades'] = $this->load_grades($gradebook_id, true);
}
$vars['bpsp_gradebook_format'] = get_option('bpsp_gradebook_format');
$vars['assignment'] = BPSP_Assignments::is_assignment($this->current_assignment);
$vars['gradebook_permalink'] = $vars['assignment_permalink'] . '/gradebook';
$vars['clear_gradebook_permalink'] = add_query_arg('_nxtnonce', nxt_create_nonce($nonce_clear_name), $vars['gradebook_permalink'] . '/clear');
$vars['import_gradebook_nonce'] = nxt_nonce_field($nonce_import_name, '_nxtnonce', true, false);
$vars['nonce'] = nxt_nonce_field($nonce_name, '_nxtnonce', true, false);
return $vars;
}
/**
* edit_bib_screen( $vars )
*
* Handles screen for editing the bibliographies
* @param Array $vars, an array of variables
* @return Array $vars modified
*/
function edit_bib_screen($vars)
{
$nonce_name = 'edit_bib';
$nonce_delete_name = 'delete_bib';
$nonce_edit_name = $nonce_name;
if (!$this->has_bib_caps($bp->loggedin_user->id) && !is_super_admin()) {
$vars['die'] = __('BuddyPress Courseware Error while forbidden user tried to edit bibliography.', 'bpsp');
return $vars;
}
if (isset($_POST['_nxtnonce']) && isset($_GET['bhash'])) {
if (!nxt_verify_nonce($_POST['_nxtnonce'], $nonce_name)) {
$vars['die'] = __('BuddyPress Courseware Nonce Error while editing bibliography.', 'bpsp');
return $vars;
}
}
$data = explode(',', sanitize_text_field($_GET['bhash']));
$bhash = $data[0];
$new_bhash = null;
$post_id = null;
if (isset($data[1]) && !empty($data[1])) {
$post_id = $data[1];
// Get the permalink for parent
if (BPSP_Assignments::is_assignment($post_id)) {
$vars['back_uri'] = $vars['nav_options'][__('Home', 'bpsp')] . '/assignment/' . $post_id;
}
if (BPSP_Courses::is_course($post_id)) {
$vars['back_uri'] = $vars['nav_options'][__('Home', 'bpsp')] . '/course/' . $post_id;
}
} else {
$bibdb_def = array('post_title' => 'BIBSDB', 'post_status' => 'draft', 'post_type' => 'bib');
$bibdb_post = get_posts($bibdb_def);
$post_id = $bibdb_post[0]->ID;
}
if ($post_id) {
$old_bib = $this->get_bib($bhash, $post_id);
if ($old_bib != null && isset($_POST['bib'])) {
$new_bhash = $this->update_bib($_POST['bib'], true, $post_id, $old_bib);
if (null != $new_bhash) {
$bhash = $new_bhash;
// Update for the next query
$vars['message'] = __('Entry updated.', 'bpsp');
} else {
$vars['error'] = __('Entry could not be updated. Or nothing changed.', 'bpsp');
}
} elseif (!$old_bib && isset($_POST['bib'])) {
$vars['error'] = __('Entry could not be found.', 'bpsp');
}
} else {
$vars['error'] = __('No Bibliography database was created.', 'bpsp');
}
$vars['name'] = 'edit_bibliography';
$vars['bib'] = shortcode_parse_atts($this->get_bib($bhash, $post_id));
$vars['has_bibs'] = true;
$vars['post_id'] = null;
$vars['has_bib_caps'] = $this->has_bib_caps($bp->loggedin_user->id);
$vars['bibs'] = $this->load_bibs(true);
$vars['bibs_delete_permalink'] = $vars['current_uri'] . '/delete_bibliography';
$vars['bibs_delete_uri'] = add_query_arg('_nxtnonce', nxt_create_nonce($nonce_delete_name), $vars['bibs_delete_permalink']);
$vars['bibs_edit_uri'] = $vars['current_uri'] . '/edit_bibliography';
$vars['bibs_form_uri'] = add_query_arg('bhash', $bhash . ',' . $post_id, $vars['bibs_edit_uri']);
$vars['bibs_nonce'] = nxt_nonce_field($nonce_name, '_nxtnonce', true, false);
$vars['trail'] = array(__('Editing Bibliography: ', 'bpsp') . $vars['bib']['title'] => '');
return $vars;
}