public function &createComponentSpec($tag_name)
{
$return_value = null;
$tag_name = strtolower($tag_name);
if (key_exists($tag_name, $this->_component_tags)) {
$component_tag = $this->_component_tags[$tag_name];
$component_class = $component_tag->getComponentClass();
$component_writer_class = $component_tag->getComponentWriterClass($this->_client);
$component_writer_decorators_classes = $component_tag->getComponentWriterDecoratorClasses($this->_client);
$return_value = new __ComponentSpec($tag_name, $component_class);
if ($component_writer_class != null) {
$component_writer = new $component_writer_class();
foreach ($component_writer_decorators_classes as $component_writer_decorators_class) {
$component_decorator = new $component_writer_decorators_class($component_writer);
$component_writer = $component_decorator;
unset($component_decorator);
}
$view_definition = $component_tag->getViewDefinition($this->_client);
if ($view_definition != null) {
if ($component_writer instanceof __ICompositeWriter) {
$component_writer->setViewDefinition($view_definition);
} else {
throw __ExceptionFactory::getInstance()->createException('Class ' . $component_writer_class . ' must implement __ICompositeWriter in order to have a view assigned to.');
}
}
$return_value->setWriter($component_writer);
}
$component_interface_spec = $component_tag->getComponentInterfaceSpec();
if ($component_interface_spec != null) {
$return_value->setComponentInterfaceSpec($component_interface_spec);
}
} else {
throw __ExceptionFactory::getInstance()->createException('ERR_UNKNOW_UI_COMPONENT_TAG', array($tag_name));
}
return $return_value;
}
