improved the upgrade system and moved albums to use an ordered list for images

1 files changed, 92 insertions, 5 deletions

diff --git a/lib/album.php b/lib/album.php
index 1eaabd3ba..87bb715f4 100644
--- a/lib/album.php
+++ b/lib/album.php
@@ -18,11 +18,60 @@ class TidypicsAlbum extends ElggObject {
 	}
 
 	/**
+	 * 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, $limit, FALSE, FALSE, TRUE);
+	}
+
+	/**
+	 * Get the number of photos in the album
+	 *
+	 * @return int
+	 */
+	public function getSize() {
+		return count($this->getImageList());
+	}
+
+	/**
 	 * Returns an order list of image guids
 	 * 
 	 * @return array
 	 */
-	public function getOrderedImageList() {
+	public function getImageList() {
 		$listString = $this->orderedImages;
 		if (!$listString) {
 			return array();
@@ -36,7 +85,7 @@ class TidypicsAlbum extends ElggObject {
 	 *
 	 * @param array $list An indexed array of image guids 
 	 */
-	public function setOrderedImageList($list) {
+	public function setImageList($list) {
 		$listString = serialize($list);
 		$this->orderedImages = $listString;
 	}
@@ -46,9 +95,47 @@ class TidypicsAlbum extends ElggObject {
 	 *
 	 * @param array $list An indexed array of image guids
 	 */
-	public function prependOrderedImageList($list) {
-		$currentList = $this->getOrderedImageList();
+	public function prependImageList($list) {
+		$currentList = $this->getImageList();
 		$list = array_merge($list, $currentList);
-		$this->setOrderedImageList($list);
+		$this->setImageList($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];
 	}
 }