/**
* General db action manager
*
* Internal method used by _onAdd(), _onEdit() and _onDelete().
*
* @param string $action 'Add', 'Edit' or 'Delete'
* @param array &$row The subject row
* @param array|null $old_row The old row or null on no old row
* @return bool true on success or false on error
* @internal
*/
private function _onDbAction($action, &$row, $old_row)
{
// Dispatch the signal to all children modules
$callback = create_function('$a', 'return @$a[\'master\'] == \'' . $this->id . '\';');
if (is_array($children = array_filter($GLOBALS['cfg'], $callback))) {
$method = '_onMaster' . $action;
foreach (array_keys($children) as $child_id) {
$child = TIP_Type::getInstance($child_id);
if (method_exists($child, $method) && !$child->{$method}($row, $old_row)) {
return false;
}
}
}
// Update user statistics, if the user module exists
if (!is_null($field = @$this->user_statistic['_on' . $action]) && !is_null($user =& TIP_Application::getSharedModule('user'))) {
$user->increment($field);
}
// Remove the feed, if it exists
if (!is_null($template =& TIP_Type::singleton(array('type' => array('template'), 'path' => array($this->id, $this->atom_template)))) && !is_null($path = $this->engine->getCachePath($template)) && file_exists($path)) {
unlink($path);
}
return true;
}
/**
* Get the privilege for the specified module
*
* Returns the privilege for a module and the specified user. If $user
* is omitted, the current user id is used. Check TIP_Privilege to see how the
* privileges are used.
*
* @param string $module The requesting module identifier
* @param mixed $user A user id
* @return TIP_PRIVILEGE... The requested privilege
*/
public static function getPrivilege($module, $user = null)
{
static $privilege = false;
if ($privilege === false) {
$privilege =& TIP_Application::getSharedModule('privilege');
}
if ($privilege) {
return $privilege->getPrivilege($module, $user);
}
return TIP::getDefaultPrivilege($module, $user);
}
/**
* Constuctor
*/
public function __construct()
{
$this->_user =& TIP_Application::getSharedModule('user');
}
/**
* 'on_process' callback for unflag actions
*
* This is the reverse operation of _onFlag(), and set the
* flag field to "no".
*
* @param array &$row The row to flag
* @return bool true on success or false on errors
*/
public function _onUnflag(&$old_row)
{
if (!isset($this->flag_field)) {
// No flag field defined: silently returns true
return true;
}
$flagger = @$old_row[$this->flagger_field];
$flagged = @$old_row[$this->owner_field];
$row[$this->flag_field] = 'no';
if (!$this->data->updateRow($row, $old_row)) {
return false;
}
$user = TIP_Application::getSharedModule('user');
if (!$user) {
// User module not available: no statistic update required
return true;
}
// Update statistics of the flagging user
if (isset($flagger, $this->unflaggee_field) && !is_null($view = $user->startDataView($user->getProperty('data')->rowFilter($flagger)))) {
$row = $view->current();
$user->endView();
if (!is_null($row)) {
$old_row = $row;
++$row[$this->unflaggee_field];
$user->getProperty('data')->updateRow($row, $old_row);
}
}
// Update statistics of the flagged user
if (isset($flagged, $this->unflagged_field) && !is_null($view = $user->startDataView($user->getProperty('data')->rowFilter($flagged)))) {
$row = $view->current();
$user->endView();
if (!is_null($row)) {
$old_row = $row;
++$row[$this->unflagged_field];
$user->getProperty('data')->updateRow($row, $old_row);
}
}
return true;
}
