Ajax calls for "files" and "files_trashbin" apps

Frontend:
- The files app list now uses ajax calls to refresh the list.
- Added support the browser back button (history API).
- Added mask + spinner while loading file list

Backend:
- Added utility function in core JS for parsing query strings.
- Moved file list + breadcrumb template data code to helper
  functions
- Fixed some file paths in trashbin app to be similar to the files app

1 files changed, 65 insertions, 0 deletions

diff --git a/apps/files/lib/helper.php b/apps/files/lib/helper.php
index 9170c6e3fc0..282f0678a9a 100644
--- a/apps/files/lib/helper.php
+++ b/apps/files/lib/helper.php
@@ -45,5 +45,70 @@ class Helper
 		return \OC_Helper::mimetypeIcon($file['mimetype']);
 	}
 
+	/**
+	 * Comparator function to sort files alphabetically and have
+	 * the directories appear first
+	 * @param array $a file
+	 * @param array $b file
+	 * @return -1 if $a must come before $b, 1 otherwise
+	 */
+	public static function fileCmp($a, $b) {
+		if ($a['type'] === 'dir' and $b['type'] !== 'dir') {
+			return -1;
+		} elseif ($a['type'] !== 'dir' and $b['type'] === 'dir') {
+			return 1;
+		} else {
+			return strnatcasecmp($a['name'], $b['name']);
+		}
+	}
+
+	/**
+	 * Retrieves the contents of the given directory and
+	 * returns it as a sorted array.
+	 * @param string $dir path to the directory
+	 * @return array of files
+	 */
+	public static function getFiles($dir) {
+		$content = \OC\Files\Filesystem::getDirectoryContent($dir);
+		$files = array();
+
+		foreach ($content as $i) {
+			$i['date'] = \OCP\Util::formatDate($i['mtime']);
+			if ($i['type'] === 'file') {
+				$fileinfo = pathinfo($i['name']);
+				$i['basename'] = $fileinfo['filename'];
+				if (!empty($fileinfo['extension'])) {
+					$i['extension'] = '.' . $fileinfo['extension'];
+				} else {
+					$i['extension'] = '';
+				}
+			}
+			$i['directory'] = $dir;
+			$i['isPreviewAvailable'] = \OCP\Preview::isMimeSupported($i['mimetype']);
+			$i['icon'] = \OCA\files\lib\Helper::determineIcon($i);
+			$files[] = $i;
+		}
 
+		usort($files, array('\OCA\files\lib\Helper', 'fileCmp'));
+
+		return $files;
+	}
+
+	/**
+	 * Splits the given path into a breadcrumb structure.
+	 * @param string $dir path to process
+	 * @return array where each entry is a hash of the absolute
+	 * directory path and its name
+	 */
+	public static function makeBreadcrumb($dir){
+		$breadcrumb = array();
+		$pathtohere = '';
+		foreach (explode('/', $dir) as $i) {
+			if ($i !== '') {
+				$pathtohere .= '/' . $i;
+				$breadcrumb[] = array('dir' => $pathtohere, 'name' => $i);
+			}
+		}
+		return $breadcrumb;
+	}
 }