Delete the previews when a version is restored

Fixes #9469

When a version of a file is restored the previews are no longer valid.
Thus we should remove them so they are regenerated.

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>

1 files changed, 10 insertions, 0 deletions

diff --git a/lib/private/Preview/Watcher.php b/lib/private/Preview/Watcher.php
index be462d9c935..0c0531dff94 100644
--- a/lib/private/Preview/Watcher.php
+++ b/lib/private/Preview/Watcher.php
@@ -49,6 +49,10 @@ class Watcher {
 	}
 
 	public function postWrite(Node $node) {
+		$this->deleteNode($node);
+	}
+
+	protected function deleteNode(Node $node) {
 		// We only handle files
 		if ($node instanceof Folder) {
 			return;
@@ -61,4 +65,10 @@ class Watcher {
 			//Nothing to do
 		}
 	}
+
+	public function versionRollback(array $data) {
+		if (isset($data['node'])) {
+			$this->deleteNode($data['node']);
+		}
+	}
 }