TFileUpload displays a file upload field on a page. Upon postback,
the text entered into the field will be treated as the name of the file
that will be uploaded to the server. The property {@link getHasFile HasFile}
indicates whether the file upload is successful. If successful, the file
may be obtained by calling {@link saveAs} to save it at a specified place.
You can use {@link getFileName FileName}, {@link getFileType FileType},
{@link getFileSize FileSize} to get the original client-side file name,
the file mime type, and the file size information. If the upload is not
successful, {@link getErrorCode ErrorCode} contains the error code
describing the cause of failure.
TFileUpload raises {@link onFileUpload OnFileUpload} event if a file is uploaded
(whether it succeeds or not).
/**
* Adds ID attribute, and renders the javascript for active component.
* @param THtmlWriter the writer used for the rendering purpose
*/
public function addAttributesToRender($writer)
{
parent::addAttributesToRender($writer);
$writer->addAttribute('id', $this->getClientID());
$this->getPage()->getClientScript()->registerPradoScript('activefileupload');
$this->getActiveControl()->registerCallbackClientScript($this->getClientClassName(), $this->getClientOptions());
}
