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<?php
/**
* Tidypics Album class
*
* @package TidypicsAlbum
*/
class TidypicsAlbum extends ElggObject {
protected function initialise_attributes() {
parent::initialise_attributes();
$this->attributes['subtype'] = "album";
}
public function __construct($guid = null) {
parent::__construct($guid);
}
/**
* Delete album
*
* @return bool
*/
public function delete() {
$this->deleteImages();
$this->deleteAlbumDir();
return parent::delete();
}
/**
* Get an array of image objects
*
* @param int $limit
* @param int $offset
* @return array
*/
public function getImages($limit, $offset=0) {
$imageList = $this->getImageList();
if ($offset > count($imageList)) {
return array();
}
$imageList = array_slice($imageList, $offset, $limit);
$images = array();
foreach ($imageList as $guid) {
$images[] = get_entity($guid);
}
return $images;
}
/**
* View a list of images
*
* @param int $limit
* @param int $offset
* @return string
*/
public function viewImages($limit, $offset=0) {
$images = $this->getImages($limit, $offset);
if (count($images) == 0) {
return '';
}
$count = $this->getSize();
return elgg_view_entity_list($images, $count, $offset, $limit, false, false, true);
}
/**
* Get the GUID of the album cover
*
* @return int
*/
public function getCoverImageGuid() {
if ($this->getSize() == 0) {
return 0;
}
$guid = $this->cover;
$imageList = $this->getImageList();
if (!in_array($guid, $imageList)) {
// select random photo to be cover
$index = array_rand($imageList, 1);
$guid = $imageList[$index];
$this->cover = $guid;
}
return $guid;
}
/**
* Set the GUID for the album cover
*
* @param int $guid
* @return bool
*/
public function setCoverImageGuid($guid) {
$imageList = $this->getImageList();
if (!in_array($guid, $imageList)) {
return false;
}
$this->cover = $guid;
return true;
}
/**
* Get the number of photos in the album
*
* @return int
*/
public function getSize() {
return count($this->getImageList());
}
/**
* Returns an order list of image guids
*
* @return array
*/
public function getImageList() {
$listString = $this->orderedImages;
if (!$listString) {
return array();
}
$list = unserialize($listString);
return $list;
}
/**
* Sets the album image order
*
* @param array $list An indexed array of image guids
*/
public function setImageList($list) {
$listString = serialize($list);
$this->orderedImages = $listString;
}
/**
* Add new images to the front of the image list
*
* @param array $list An indexed array of image guids
*/
public function prependImageList($list) {
$currentList = $this->getImageList();
$list = array_merge($list, $currentList);
$this->setImageList($list);
}
/**
* Get the GUID of the image before the current one
*
* @param int $currentGuid
* @return int
*/
public function getPreviousImageGuid($currentGuid) {
$imageList = $this->getImageList();
$key = array_search($currentGuid, $imageList);
if ($key === FALSE) {
return 0;
}
$key--;
if ($key < 0) {
return 0;
}
return $imageList[$key];
}
/**
* Get the GUID of the image after the current one
*
* @param int $currentGuid
* @return int
*/
public function getNextImageGuid($currentGuid) {
$imageList = $this->getImageList();
$key = array_search($currentGuid, $imageList);
if ($key === FALSE) {
return 0;
}
$key++;
if ($key >= count($imageList)) {
return 0;
}
return $imageList[$key];
}
/**
* Remove an image from the album list
*
* @param int $imageGuid
* @return bool
*/
public function removeImage($imageGuid) {
$imageList = $this->getImageList();
$key = array_search($imageGuid, $imageList);
if ($key === FALSE) {
return FALSE;
}
unset($imageList[$key]);
$this->setImageList($imageList);
return TRUE;
}
protected function deleteImages() {
// get all the images from this album as long as less than 999 images
$images = elgg_get_entities(array(
"type=" => "object",
"subtype" => "image",
"container_guid" => $this->guid,
"limit" => ELGG_ENTITIES_NO_VALUE,
));
if ($images) {
foreach ($images as $image) {
if ($image) {
$image->delete();
}
}
}
}
protected function deleteAlbumDir() {
$tmpfile = new ElggFile();
$tmpfile->setFilename('image/' . $this->guid . '/._tmp_del_tidypics_album_');
$tmpfile->subtype = 'image';
$tmpfile->owner_guid = $this->owner_guid;
$tmpfile->container_guid = $this->guid;
$tmpfile->open("write");
$tmpfile->write('');
$tmpfile->close();
$tmpfile->save();
$albumdir = eregi_replace('/._tmp_del_tidypics_album_', '', $tmpfile->getFilenameOnFilestore());
$tmpfile->delete();
if (is_dir($albumdir)) {
rmdir($albumdir);
}
}
}
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