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, 97 insertions, 0 deletions

diff --git a/apps/files_trashbin/lib/helper.php b/apps/files_trashbin/lib/helper.php
new file mode 100644
index 00000000000..098fc0b54b7
--- /dev/null
+++ b/apps/files_trashbin/lib/helper.php
@@ -0,0 +1,97 @@
+<?php
+
+namespace OCA\files_trashbin\lib;
+
+class Helper
+{
+	/**
+	 * Retrieves the contents of a trash bin directory.
+	 * @param string $dir path to the directory inside the trashbin
+	 * or empty to retrieve the root of the trashbin
+	 * @return array of files
+	 */
+	public static function getTrashFiles($dir){
+		$result = array();
+		$user = \OCP\User::getUser();
+
+		if ($dir && $dir !== '/') {
+			$view = new \OC_Filesystemview('/'.$user.'/files_trashbin/files');
+			$dirContent = $view->opendir($dir);
+			if ($dirContent === false){
+				return null;
+			}
+			if(is_resource($dirContent)){
+				while(($entryName = readdir($dirContent)) !== false) {
+					if (!\OC\Files\Filesystem::isIgnoredDir($entryName)) {
+						$pos = strpos($dir.'/', '/', 1);
+						$tmp = substr($dir, 0, $pos);
+						$pos = strrpos($tmp, '.d');
+						$timestamp = substr($tmp, $pos+2);
+						$result[] = array(
+								'id' => $entryName,
+								'timestamp' => $timestamp,
+								'mime' =>  $view->getMimeType($dir.'/'.$entryName),
+								'type' => $view->is_dir($dir.'/'.$entryName) ? 'dir' : 'file',
+								'location' => $dir,
+								);
+					}
+				}
+				closedir($dirContent);
+			}
+		} else {
+			$query = \OC_DB::prepare('SELECT `id`,`location`,`timestamp`,`type`,`mime` FROM `*PREFIX*files_trash` WHERE `user` = ?');
+			$result = $query->execute(array($user))->fetchAll();
+		}
+
+		$files = array();
+		foreach ($result as $r) {
+			$i = array();
+			$i['name'] = $r['id'];
+			$i['date'] = \OCP\Util::formatDate($r['timestamp']);
+			$i['timestamp'] = $r['timestamp'];
+			$i['mimetype'] = $r['mime'];
+			$i['type'] = $r['type'];
+			if ($i['type'] === 'file') {
+				$fileinfo = pathinfo($r['id']);
+				$i['basename'] = $fileinfo['filename'];
+				$i['extension'] = isset($fileinfo['extension']) ? ('.'.$fileinfo['extension']) : '';
+			}
+			$i['directory'] = $r['location'];
+			if ($i['directory'] === '/') {
+				$i['directory'] = '';
+			}
+			$i['permissions'] = \OCP\PERMISSION_READ;
+			$i['isPreviewAvailable'] = \OCP\Preview::isMimeSupported($r['mime']);
+			$i['icon'] = \OCA\files\lib\Helper::determineIcon($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){
+		// Make breadcrumb
+		$pathtohere = '';
+		$breadcrumb = array();
+		foreach (explode('/', $dir) as $i) {
+			if ($i !== '') {
+				if ( preg_match('/^(.+)\.d[0-9]+$/', $i, $match) ) {
+					$name = $match[1];
+				} else {
+					$name = $i;
+				}
+				$pathtohere .= '/' . $i;
+				$breadcrumb[] = array('dir' => $pathtohere, 'name' => $name);
+			}
+		}
+		return $breadcrumb;
+	}
+}