/**
* Get a list of available calendars from this source
*
* @param integer $filter Bitmask defining filter criterias
* @param object $tree Reference to hierarchical folder tree object
*
* @return array List of calendars
*/
public function list_calendars($filter = 0, &$tree = null)
{
// attempt to create a default calendar for this user
if (!$this->has_writeable) {
if ($this->create_calendar(array('name' => 'Calendar', 'color' => 'cc0000'))) {
unset($this->calendars);
$this->_read_calendars();
}
}
$delim = $this->rc->get_storage()->get_hierarchy_delimiter();
$folders = $this->filter_calendars($filter);
$calendars = array();
// include virtual folders for a full folder tree
if (!is_null($tree)) {
$folders = kolab_storage::folder_hierarchy($folders, $tree);
}
foreach ($folders as $id => $cal) {
$fullname = $cal->get_name();
$listname = $cal->get_foldername();
$imap_path = explode($delim, $cal->name);
// find parent
do {
array_pop($imap_path);
$parent_id = kolab_storage::folder_id(join($delim, $imap_path));
} while (count($imap_path) > 1 && !$this->calendars[$parent_id]);
// restore "real" parent ID
if ($parent_id && !$this->calendars[$parent_id]) {
$parent_id = kolab_storage::folder_id($cal->get_parent());
}
// turn a kolab_storage_folder object into a kolab_calendar
if ($cal instanceof kolab_storage_folder) {
$cal = new kolab_calendar($cal->name, $this->cal);
$this->calendars[$cal->id] = $cal;
}
// special handling for user or virtual folders
if ($cal instanceof kolab_storage_folder_user) {
$calendars[$cal->id] = array('id' => $cal->id, 'name' => kolab_storage::object_name($fullname), 'listname' => $listname, 'editname' => $cal->get_foldername(), 'color' => $cal->get_color(), 'active' => $cal->is_active(), 'title' => $cal->get_owner(), 'owner' => $cal->get_owner(), 'history' => false, 'virtual' => false, 'editable' => false, 'group' => 'other', 'class' => 'user', 'removable' => true);
} else {
if ($cal->virtual) {
$calendars[$cal->id] = array('id' => $cal->id, 'name' => $fullname, 'listname' => $listname, 'editname' => $cal->get_foldername(), 'virtual' => true, 'editable' => false, 'group' => $cal->get_namespace(), 'class' => 'folder');
} else {
$calendars[$cal->id] = array('id' => $cal->id, 'name' => $fullname, 'listname' => $listname, 'editname' => $cal->get_foldername(), 'title' => $cal->get_title(), 'color' => $cal->get_color(), 'editable' => $cal->editable, 'rights' => $cal->rights, 'showalarms' => $cal->alarms, 'history' => !empty($this->bonnie_api), 'group' => $cal->get_namespace(), 'default' => $cal->default, 'active' => $cal->is_active(), 'owner' => $cal->get_owner(), 'children' => true, 'parent' => $parent_id, 'subtype' => $cal->subtype, 'caldavurl' => $cal->get_caldav_url(), 'removable' => !$cal->default);
}
}
if ($cal->subscriptions) {
$calendars[$cal->id]['subscribed'] = $cal->is_subscribed();
}
}
// list virtual calendars showing invitations
if ($this->rc->config->get('kolab_invitation_calendars')) {
foreach (array(self::INVITATIONS_CALENDAR_PENDING, self::INVITATIONS_CALENDAR_DECLINED) as $id) {
$cal = new kolab_invitation_calendar($id, $this->cal);
$this->calendars[$cal->id] = $cal;
if (!($filter & self::FILTER_ACTIVE) || $cal->is_active()) {
$calendars[$id] = array('id' => $cal->id, 'name' => $cal->get_name(), 'listname' => $cal->get_name(), 'editname' => $cal->get_foldername(), 'title' => $cal->get_title(), 'color' => $cal->get_color(), 'editable' => $cal->editable, 'rights' => $cal->rights, 'showalarms' => $cal->alarms, 'history' => !empty($this->bonnie_api), 'group' => 'x-invitations', 'default' => false, 'active' => $cal->is_active(), 'owner' => $cal->get_owner(), 'children' => false);
if ($id == self::INVITATIONS_CALENDAR_PENDING) {
$calendars[$id]['counts'] = true;
}
if (is_object($tree)) {
$tree->children[] = $cal;
}
}
}
}
// append the virtual birthdays calendar
if ($this->rc->config->get('calendar_contact_birthdays', false)) {
$id = self::BIRTHDAY_CALENDAR_ID;
$prefs = $this->rc->config->get('kolab_calendars', array());
// read local prefs
if (!($filter & self::FILTER_ACTIVE) || $prefs[$id]['active']) {
$calendars[$id] = array('id' => $id, 'name' => $this->cal->gettext('birthdays'), 'listname' => $this->cal->gettext('birthdays'), 'color' => $prefs[$id]['color'] ?: '87CEFA', 'active' => (bool) $prefs[$id]['active'], 'showalarms' => (bool) $this->rc->config->get('calendar_birthdays_alarm_type'), 'group' => 'x-birthdays', 'editable' => false, 'default' => false, 'children' => false, 'history' => false);
}
}
return $calendars;
}
