/**
* Registers a component into the existing page hierarchy.
*
* This method generates UniqueID for the registered component.
* It also registers the component to the page if it implements
* certain interfaces (IPostBackDataHandler, IPostBackEventHandler,
* IValidator, ICallbackEventHandler). The component's children are also registered recursively.
* @param TComponent the component to be registered
*/
private function registerComponent($component)
{
$component->root = $this->root;
$component->uniqueID = strlen($this->uniqueID) ? $this->uniqueID . ':' . $component->id : $component->id;
if ($this->root instanceof TPage) {
if ($component instanceof TForm) {
$this->root->setForm($component);
}
if ($component instanceof THead) {
$this->root->setHead($component);
}
if ($component instanceof TContentPlaceHolder) {
$this->root->registerContentPlaceHolder($component);
}
if ($component instanceof IPostBackDataHandler) {
$this->root->registerPostDataLoader($component);
}
if ($component instanceof IPostBackEventHandler) {
$this->root->registerPostBackCandidate($component);
}
if ($component instanceof IValidator) {
$this->root->registerValidator($component);
}
if (class_exists('ICallbackEventHandler', FALSE)) {
if ($component instanceof ICallbackEventHandler) {
$this->root->registerCallbackCandidate($component);
}
if ($this->root instanceof ICallbackEventHandler) {
$this->root->registerCallbackCandidate($this->root);
}
}
foreach ($component->children as $child) {
$component->registerComponent($child);
}
}
}
