/**
* Return the value of a generic item
*
* Gets the value of a generic item. This implementation adds the field
* feature to the TIP_Module::getItem() method.
*
* Getting an item performs some search operations with this priority:
*
* - Try to get the field in the current row throught getField().
*
* - If the field is not found but the current view is not a TIP_Data_View
* (that is, it is not a TIP_Data_View object), it scans the view stack
* for the last view that was of TIP_Data_View type and checks if $id is
* present as a field in the current row.
* This because views others than TIP_Data_View are considered "weaks",
* that is their values are not built from real data fields.
*
* - Summary value of the current view throught getSummary().
*
* - Chain-up the parent method TIP_Module::getItem().
*
* The first succesful search operation will stop the sequence.
*
* @param string $id The item id
* @return mixed|null The value of the item or null if not found
*/
public function getItem($id)
{
if (!is_null($value = $this->getField($id))) {
return $value;
}
if (isset($this->_view) && !$this->_view instanceof TIP_Data_View) {
// Find the last TIP_Data_View
$stack =& $this->_views;
end($stack);
do {
prev($stack);
$view_id = key($stack);
} while (isset($view_id) && !$stack[$view_id] instanceof TIP_Data_View);
if (isset($view_id) && !is_null($value = $stack[$view_id]->getField($id))) {
return $value;
}
}
$value = $this->getSummary($id);
if (!is_null($value)) {
return $value;
}
return parent::getItem($id);
}
protected function postConstructor()
{
parent::postConstructor();
// This must be called here (not in checkOptions()) to avoid
// buildActionUri() call before application instantiation
isset($this->fatal_uri) || ($this->fatal_uri = TIP::buildActionUri($this->id, 'fatal'));
$this->keys['TITLE'] =& $this->title;
$this->keys['DESCRIPTION'] =& $this->description;
$this->keys['KEYWORDS'] =& $this->keywords;
$this->keys['ROOT'] = TIP::getRoot();
$this->keys['HOME'] = TIP::getHome();
$this->keys['REFERER'] = '';
// Set $_request
$module = TIP::getGet('module', 'string');
$action = TIP::getGet('action', 'string');
if (!$action) {
$module = TIP::getPost('module', 'string');
$action = TIP::getPost('action', 'string');
}
$this->_request = array('uri' => @$_SERVER['REQUEST_URI'], 'module' => @strtolower($module), 'action' => @strtolower($action), 'id' => TIP::getGetOrPost('id', 'string'));
$this->keys['REQUEST'] = $this->_request['uri'];
$this->keys['MODULE'] = $this->_request['module'];
$this->keys['ACTION'] = $this->_request['action'];
// The ID global key will be assigned when the requested module
// is loaded, so a type casting can be forced (because the id_type
// of the module is known)
$this->keys['ID'] = '';
// Start the session
TIP_AHAH || $this->_startSession();
}
/**
* Return the value of a generic item
*
* Gets the value of a generic item. This implementation adds form
* specific features to the TIP_Module::getItem() method, such as
* the ability to get information from the current element or from
* the current section.
*
* @param string $id The item id
* @return mixed|null The value of the item or null if not found
*/
public function getItem($id)
{
if (isset($this->_element_view) && !is_null($value = $this->_element_view->getField($id))) {
return $value;
}
if (isset($this->_section_view) && !is_null($value = $this->_section_view->getField($id))) {
return $value;
}
return parent::getItem($id);
}
