/**
* Sends the preview, including the headers to client which requested it
*
* @param null|string $mimeTypeForHeaders the media type to use when sending back the reply
*
* @throws NotFoundException
*/
public function showPreview($mimeTypeForHeaders = null) {
// Check if file is valid
if ($this->isFileValid() === false) {
throw new NotFoundException('File not found.');
}
if (is_null($this->preview)) {
$this->getPreview();
}
if ($this->preview instanceof \OCP\IImage) {
if ($this->preview->valid()) {
\OCP\Response::enableCaching(3600 * 24); // 24 hours
} else {
$this->getMimeIcon();
}
$this->preview->show($mimeTypeForHeaders);
}
}
/**
* Sends the preview, including the headers to client which requested it
*
* @param null|string $mimeTypeForHeaders the media type to use when sending back the reply
*
* @throws NotFoundException
*/
public function showPreview($mimeTypeForHeaders = null)
{
// Check if file is valid
if ($this->isFileValid() === false) {
throw new NotFoundException('File not found.');
}
if ($cachedPath = $this->isCached($this->info->getId())) {
header('Content-Type: ' . $this->info->getMimetype());
$this->userView->readfile($cachedPath);
return;
}
if (is_null($this->preview)) {
$this->getPreview();
}
if ($this->preview instanceof \OCP\IImage) {
if ($this->preview->valid()) {
\OCP\Response::enableCaching(3600 * 24);
// 24 hours
} else {
$this->getMimeIcon();
}
$this->preview->show($mimeTypeForHeaders);
}
}
/**
* Returns a preview of a file
*
* The cache is searched first and if nothing usable was found then a preview is
* generated by one of the providers
*
* @return \OCP\IImage
*/
public function getPreview()
{
if (!is_null($this->preview) && $this->preview->valid()) {
return $this->preview;
}
$this->preview = null;
$fileInfo = $this->getFileInfo();
if ($fileInfo === null || $fileInfo === false) {
return new \OC_Image();
}
$fileId = $fileInfo->getId();
$cached = $this->isCached($fileId);
if ($cached) {
$this->getCachedPreview($fileId, $cached);
}
if (is_null($this->preview)) {
$this->generatePreview($fileId);
}
// We still don't have a preview, so we generate an empty object which can't be displayed
if (is_null($this->preview)) {
$this->preview = new \OC_Image();
}
return $this->preview;
}
