From b388c6684e09bd9b3c92171d9220e825542431af Mon Sep 17 00:00:00 2001
From: Matthias Beyer <mail@beyermatthias.de>
Date: Mon, 18 Apr 2016 19:52:14 +0200
Subject: [PATCH] Add Viewer Trait

---
 libimagentryview/src/viewer.rs | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 libimagentryview/src/viewer.rs

diff --git a/libimagentryview/src/viewer.rs b/libimagentryview/src/viewer.rs
new file mode 100644
index 00000000..72ffbd7d
--- /dev/null
+++ b/libimagentryview/src/viewer.rs
@@ -0,0 +1,17 @@
+use libimagstore::store::Entry;
+
+use result::Result;
+
+pub trait Viewer {
+
+    fn view_entry(&self, e: &Entry) -> Result<()>;
+
+    fn view_entries<I: Iterator<Item = Entry>>(&self, entries: I) -> Result<()> {
+        for entry in entries {
+            if let Err(e) = self.view_entry(&entry) {
+                return Err(e);
+            }
+        }
+        Ok(())
+    }
+}