From 3efbb1ddc8b85f85621db9b37a0980ec88d2386d Mon Sep 17 00:00:00 2001
From: Robin Krahl <robin.krahl@ireas.org>
Date: Fri, 11 Jan 2019 00:41:59 +0000
Subject: Return Box<dyn Backend> in default_backend()

This patch refactors the default_backend function to return a Box<dyn
Backend> instead of impl Backend.  This will allow us to dynamically
choose the backend implementation in a future patch.  To keep the
current interface, we change show_with to accept both a reference to a
backend instance as well as a reference to a boxed backend instance.
This also means we have to implement AsRef<Self> for the backend
structs.
---
 src/backends/dialog.rs | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/backends/dialog.rs')

diff --git a/src/backends/dialog.rs b/src/backends/dialog.rs
index 939b8f3..6f078e6 100644
--- a/src/backends/dialog.rs
+++ b/src/backends/dialog.rs
@@ -77,6 +77,12 @@ impl Dialog {
     }
 }
 
+impl AsRef<Dialog> for Dialog {
+    fn as_ref(&self) -> &Self {
+        self
+    }
+}
+
 fn require_success(status: process::ExitStatus) -> Result<()> {
     if status.success() {
         Ok(())
-- 
cgit v1.2.1